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@ -1,19 +1,5 @@
# AI Agent Notes
## Canonical AI References
- Use `docs/ai_language_reference.md` as the primary, compiler-verified Lyng language reference for code generation.
- For generics-heavy code generation, follow `docs/ai_language_reference.md` section `7.1 Generics Runtime Model and Bounds` and `7.2 Differences vs Java / Kotlin / Scala`.
- Use `docs/ai_stdlib_reference.md` for default runtime/module APIs and stdlib surface.
- Treat `LYNG_AI_SPEC.md` and older docs as secondary if they conflict with the two files above.
- Prefer the shortest clear loop: use `for` for straightforward iteration/ranges; use `while` only when loop state/condition is irregular or changes in ways `for` cannot express cleanly.
- In Lyng code, slice strings with range indexing (`text[a..<b]`, `text[..<n]`, `text[n..]`) and avoid Java/Kotlin-style `substring(...)`.
## Lyng-First API Declarations
- Use `.lyng` declarations as the single source of truth for Lyng-facing API docs and types (especially module extern declarations).
- Prefer defining Lyng entities (enums/classes/type shapes) in `.lyng` files; only define them in Kotlin when there is Kotlin/platform-specific implementation detail that cannot be expressed in Lyng.
- Avoid hardcoding Lyng API documentation in Kotlin registrars when it can be declared in `.lyng`; Kotlin-side docs should be fallback/bridge only.
- For mixed pluggable modules (Lyng + Kotlin), embed module `.lyng` sources as generated Kotlin string literals, evaluate them into module scope during registration, then attach Kotlin implementations/bindings.
## Kotlin/Wasm generation guardrails
- Avoid creating suspend lambdas for compiler runtime statements. Prefer explicit `object : Statement()` with `override suspend fun execute(...)`.
- Do not use `statement { ... }` or other inline suspend lambdas in compiler hot paths (e.g., parsing/var declarations, initializer thunks).
@ -27,7 +13,6 @@
- Object members are always allowed even on unknown types; non-Object members require explicit casts. Remove `inspect` from Object and use `toInspectString()` instead.
- Type expression checks: `x is T` is value instance check; `T1 is T2` is type-subset; `A in T` means `A` is subset of `T`; `==` is structural type equality.
- Type aliases: `type Name = TypeExpr` (generic allowed) expand to their underlying type expressions; no nominal distinctness.
- Bounds and variance: `T: A & B` / `T: A | B` for bounds; declaration-site variance with `out` / `in`.
- Do not reintroduce bytecode fallback opcodes (e.g., `GET_NAME`, `EVAL_*`, `CALL_FALLBACK`) or runtime name-resolution fallbacks; all symbol resolution must stay compile-time only.
## Bytecode frame-first migration plan
@ -35,7 +20,3 @@
- Create closure references only when a capture is detected; use a direct frame+slot reference (foreign slot ref) instead of scope slots.
- Keep Scope as a lazy reflection facade: resolve name -> slot only on demand for Kotlin interop (no eager name mapping on every call).
- Avoid PUSH_SCOPE/POP_SCOPE in bytecode for loops/functions unless dynamic name access or Kotlin reflection is requested.
## ABI proposal notes
- Runtime generic metadata for generic extern classes is tracked in `proposals/extern_generic_runtime_abi.md`.
- Keep this design `Obj`-centric: do not assume extern-class values are `ObjInstance`; collection must be enabled on `ObjClass`.

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@ -4,7 +4,6 @@ High-density specification for LLMs. Reference this for all Lyng code generation
## 1. Core Philosophy & Syntax
- **Everything is an Expression**: Blocks, `if`, `when`, `for`, `while`, `do-while` return their last expression (or `void`).
- **Static Types + Inference**: Every declaration has a compile-time type (explicit or inferred). Types are Kotlin‑style: non‑null by default, nullable with `?`.
- **Loops with `else`**: `for`, `while`, and `do-while` support an optional `else` block.
- `else` executes **only if** the loop finishes normally (without a `break`).
- `break <value>` exits the loop and sets its return value.
@ -14,7 +13,6 @@ High-density specification for LLMs. Reference this for all Lyng code generation
3. Result of the last iteration (if loop finished normally and no `else`).
4. `void` (if loop body never executed and no `else`).
- **Implicit Coroutines**: All functions are coroutines. No `async/await`. Use `launch { ... }` (returns `Deferred`) or `flow { ... }`.
- **Functions**: Use `fun` or the short form `fn`. Function declarations are expressions returning a callable.
- **Variables**: `val` (read-only), `var` (mutable). Supports late-init `val` in classes (must be assigned in `init` or body).
- **Serialization**: Use `@Transient` attribute before `val`/`var` or constructor parameters to exclude them from Lynon/JSON serialization. Transient fields are also ignored during `==` structural equality checks.
- **Null Safety**: `?` (nullable type), `?.` (safe access), `?( )` (safe invoke), `?{ }` (safe block invoke), `?[ ]` (safe index), `?:` or `??` (elvis), `?=` (assign-if-null).
@ -46,21 +44,9 @@ High-density specification for LLMs. Reference this for all Lyng code generation
- **Root Type**: Everything is an `Object` (root of the hierarchy).
- **Nullability**: Non-null by default (`T`), nullable with `T?`, `!!` asserts non-null.
- **Untyped params**: `fun foo(x)` -> `x: Object`, `fun foo(x?)` -> `x: Object?`.
- **Untyped vars**: `var x` is `Unset` until first assignment locks the type (including nullability).
- `val x = null` -> type `Null`; `var x = null` -> type `Object?`.
- **Inference**:
- List literals infer union element types; empty list defaults to `List<Object>` unless constrained.
- Map literals infer key/value types; empty map defaults to `Map<Object, Object>` unless constrained.
- Mixed numeric ops promote `Int` + `Real` to `Real`.
- **Type aliases**: `type Name = TypeExpr` (generic allowed). Aliases expand to their underlying type expressions (no nominal distinctness).
- **Generics**: Bounds with `T: A & B` or `T: A | B`; variance uses `out`/`in` (declaration‑site only).
- **Casts**: `as` is a runtime-checked cast; `as?` is safe-cast returning `null`. If the value is nullable, `as T` implies `!!`.
## 2.2 Type Expressions and Checks
- **Value checks**: `x is T` (runtime instance check).
- **Type checks**: `T1 is T2` and `A in T` are subset checks between type expressions (compile-time where possible).
- **Type equality**: `T1 == T2` is structural (unions/intersections are order‑insensitive).
- **Compile-time enforcement**: Bounds are checked at call sites; runtime checks only appear when the compile‑time type is too general.
- **Untyped vars**: `var x` is `Unset` until first assignment locks the type.
- **Inference**: List/map literals infer union element types; empty list is `List<Object>`, empty map is `{:}`.
- **Generics**: Bounds with `T: A & B` or `T: A | B`; variance uses `out`/`in`.
## 3. Delegation (`by`)
Unified model for `val`, `var`, and `fun`.

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@ -32,9 +32,9 @@ class A {
enum E* { One, Two }
}
val ab = A.B()
assertEquals(null, ab.x)
assertEquals("bar", A.Inner.foo)
assertEquals(A.E.One, A.One)
assertEquals(ab.x, null)
assertEquals(A.Inner.foo, "bar")
assertEquals(A.One, A.E.One)
```
- extremely simple Kotlin integration on any platform (JVM, JS, WasmJS, Lunux, MacOS, iOS, Windows)

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@ -20,12 +20,13 @@
set -e
echo "publishing all artifacts"
echo
./gradlew publishToMavenLocal site:jsBrowserDistribution publish buildInstallablePlugin :lyng:linkReleaseExecutableLinuxX64 :lyng:installJvmDist --parallel
./gradlew publishToMavenLocal
./gradlew publish
#echo
#echo "Creating plugin"
#echo
#./gradlew buildInstallablePlugin
echo
echo "Creating plugin"
echo
./gradlew buildInstallablePlugin
echo
echo "building CLI tools"

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@ -35,27 +35,3 @@ tasks.register<Exec>("generateDocs") {
description = "Generates a single-file documentation HTML using bin/generate_docs.sh"
commandLine("./bin/generate_docs.sh")
}
// Sample generator task for .lyng.d definition files (not wired into build).
// Usage: ./gradlew generateLyngDefsSample
tasks.register("generateLyngDefsSample") {
group = "lyng"
description = "Generate a sample .lyng.d file under build/generated/lyng/defs"
outputs.dir(layout.buildDirectory.dir("generated/lyng/defs"))
doLast {
val outDir = layout.buildDirectory.dir("generated/lyng/defs").get().asFile
outDir.mkdirs()
val outFile = outDir.resolve("sample.lyng.d")
outFile.writeText(
"""
/** Generated API */
extern fun ping(): Int
/** Generated class */
class Generated(val name: String) {
fun greet(): String = "hi " + name
}
""".trimIndent()
)
}
}

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@ -1,8 +1,8 @@
# Array
It's an interface if the [Collection] that provides indexing access, like `array[3] = 0`.
Array therefore implements [Iterable] too. Well known implementations of `Array` are
[List] and [ImmutableList].
Array therefore implements [Iterable] too. The well known implementatino of the `Array` is
[List].
Array adds the following methods:
@ -35,4 +35,3 @@ To pre-sort and array use `Iterable.sorted*` or in-place `List.sort*` families,
[Collection]: Collection.md
[Iterable]: Iterable.md
[List]: List.md
[ImmutableList]: ImmutableList.md

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@ -6,13 +6,6 @@ Is a [Iterable] with known `size`, a finite [Iterable]:
val size
}
`Collection` is a read/traversal contract shared by mutable and immutable collections.
Concrete collection classes:
- Mutable: [List], [Set], [Map]
- Immutable: [ImmutableList], [ImmutableSet], [ImmutableMap]
- Observable mutable lists (opt-in module): [ObservableList]
| name | description |
|------------------------|------------------------------------------------------|
@ -23,9 +16,4 @@ See [List], [Set], [Iterable] and [Efficient Iterables in Kotlin Interop](Effici
[Iterable]: Iterable.md
[List]: List.md
[Set]: Set.md
[Map]: Map.md
[ImmutableList]: ImmutableList.md
[ImmutableSet]: ImmutableSet.md
[ImmutableMap]: ImmutableMap.md
[ObservableList]: ObservableList.md
[Set]: Set.md

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@ -1,37 +0,0 @@
# ImmutableList built-in class
`ImmutableList` is an immutable, indexable list value.
It implements [Array], therefore [Collection] and [Iterable].
Use it when API contracts require a list that cannot be mutated through aliases.
## Creating
val a = ImmutableList(1,2,3)
val b = [1,2,3].toImmutable()
val c = (1..3).toImmutableList()
>>> void
## Converting
val i = ImmutableList(1,2,3)
val m = i.toMutable()
m += 4
assertEquals( ImmutableList(1,2,3), i )
assertEquals( [1,2,3,4], m )
>>> void
## Members
| name | meaning |
|---------------|-----------------------------------------|
| `size` | number of elements |
| `[index]` | element access by index |
| `[Range]` | immutable slice |
| `+` | append element(s), returns new immutable list |
| `-` | remove element(s), returns new immutable list |
| `toMutable()` | create mutable copy |
[Array]: Array.md
[Collection]: Collection.md
[Iterable]: Iterable.md

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@ -1,36 +0,0 @@
# ImmutableMap built-in class
`ImmutableMap` is an immutable map of key-value pairs.
It implements [Collection] and [Iterable] of [MapEntry].
## Creating
val a = ImmutableMap("a" => 1, "b" => 2)
val b = Map("a" => 1, "b" => 2).toImmutable()
val c = ["a" => 1, "b" => 2].toImmutableMap
>>> void
## Converting
val i = ImmutableMap("a" => 1)
val m = i.toMutable()
m["a"] = 2
assertEquals( 1, i["a"] )
assertEquals( 2, m["a"] )
>>> void
## Members
| name | meaning |
|-----------------|------------------------------------------|
| `size` | number of entries |
| `[key]` | get value by key, or `null` if absent |
| `getOrNull(key)`| same as `[key]` |
| `keys` | list of keys |
| `values` | list of values |
| `+` | merge (rightmost wins), returns new immutable map |
| `toMutable()` | create mutable copy |
[Collection]: Collection.md
[Iterable]: Iterable.md
[MapEntry]: Map.md

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@ -1,34 +0,0 @@
# ImmutableSet built-in class
`ImmutableSet` is an immutable set of unique elements.
It implements [Collection] and [Iterable].
## Creating
val a = ImmutableSet(1,2,3)
val b = Set(1,2,3).toImmutable()
val c = [1,2,3].toImmutableSet
>>> void
## Converting
val i = ImmutableSet(1,2,3)
val m = i.toMutable()
m += 4
assertEquals( ImmutableSet(1,2,3), i )
assertEquals( Set(1,2,3,4), m )
>>> void
## Members
| name | meaning |
|---------------|-----------------------------------------------------|
| `size` | number of elements |
| `contains(x)` | membership test |
| `+`, `union` | union, returns new immutable set |
| `-`, `subtract` | subtraction, returns new immutable set |
| `*`, `intersect` | intersection, returns new immutable set |
| `toMutable()` | create mutable copy |
[Collection]: Collection.md
[Iterable]: Iterable.md

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@ -108,8 +108,8 @@ You can also use flow variations that return a cold `Flow` instead of a `List`,
Find the minimum or maximum value of a function applied to each element:
val source = ["abc", "de", "fghi"]
assertEquals(2, source.minOf { (it as String).length })
assertEquals(4, source.maxOf { (it as String).length })
assertEquals(2, source.minOf { it.length })
assertEquals(4, source.maxOf { it.length })
>>> void
## flatten and flatMap
@ -147,15 +147,12 @@ Search for the first element that satisfies the given predicate:
| fun/method | description |
|------------------------|---------------------------------------------------------------------------------|
| toList() | create a list from iterable |
| toImmutableList() | create an immutable list from iterable |
| toSet() | create a set from iterable |
| toImmutableSet | create an immutable set from iterable |
| contains(i) | check that iterable contains `i` |
| `i in iterable` | same as `contains(i)` |
| isEmpty() | check iterable is empty |
| forEach(f) | call f for each element |
| toMap() | create a map from list of key-value pairs (arrays of 2 items or like) |
| toImmutableMap | create an immutable map from list of key-value pairs |
| any(p) | true if any element matches predicate `p` |
| all(p) | true if all elements match predicate `p` |
| map(f) | create a list of values returned by `f` called for each element of the iterable |
@ -209,20 +206,16 @@ For high-performance Kotlin-side interop and custom iterable implementation deta
## Implemented in classes:
- [List], [ImmutableList], [Range], [Buffer](Buffer.md), [BitBuffer], [Buffer], [Set], [ImmutableSet], [Map], [ImmutableMap], [RingBuffer]
- [List], [Range], [Buffer](Buffer.md), [BitBuffer], [Buffer], [Set], [RingBuffer]
[Collection]: Collection.md
[List]: List.md
[ImmutableList]: ImmutableList.md
[Flow]: parallelism.md#flow
[Range]: Range.md
[Set]: Set.md
[ImmutableSet]: ImmutableSet.md
[Map]: Map.md
[ImmutableMap]: ImmutableMap.md
[RingBuffer]: RingBuffer.md
[RingBuffer]: RingBuffer.md

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@ -1,8 +1,6 @@
# List built-in class
Mutable list of any objects.
For immutable list values, see [ImmutableList].
For observable mutable lists and change hooks, see [ObservableList].
It's class in Lyng is `List`:
@ -181,50 +179,6 @@ for `sort()` will be `sort { a, b -> a <=> b }
It inherits from [Iterable] too and thus all iterable methods are applicable to any list.
## Observable list hooks
Observable hooks are provided by module `lyng.observable` and are opt-in:
import lyng.observable
val src = [1,2,3]
val xs = src.observable()
assert(xs is ObservableList<Int>)
var before = 0
var after = 0
xs.beforeChange { before++ }
xs.onChange { after++ }
xs += 4
xs[0] = 100
assertEquals([100,2,3,4], xs)
assertEquals(2, before)
assertEquals(2, after)
>>> void
`beforeChange` runs before mutation commit and may reject it by throwing exception (typically `ChangeRejectionException` from the same module):
import lyng.observable
val xs = [1,2].observable()
xs.beforeChange { throw ChangeRejectionException("read only") }
assertThrows(ChangeRejectionException) { xs += 3 }
assertEquals([1,2], xs)
>>> void
`changes()` returns `Flow<ListChange<T>>` of committed events:
import lyng.observable
val xs = [10,20].observable()
val it = xs.changes().iterator()
xs += 30
assert(it.hasNext())
val e = it.next()
assert(e is ListInsert<Int>)
assertEquals([30], (e as ListInsert<Int>).values)
it.cancelIteration()
>>> void
## Member inherited from Array
| name | meaning | type |
@ -242,6 +196,4 @@ Observable hooks are provided by module `lyng.observable` and are opt-in:
[Range]: Range.md
[Iterable]: Iterable.md
[ImmutableList]: ImmutableList.md
[ObservableList]: ObservableList.md
[Iterable]: Iterable.md

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@ -3,7 +3,6 @@
Map is a mutable collection of key-value pairs, where keys are unique. You can create maps in two ways:
- with the constructor `Map(...)` or `.toMap()` helpers; and
- with map literals using braces: `{ "key": value, id: expr, id: }`.
For immutable map values, see [ImmutableMap].
When constructing from a list, each list item must be a [Collection] with exactly 2 elements, for example, a [List].
@ -95,8 +94,7 @@ Or iterate its key-value pairs that are instances of [MapEntry] class:
val map = Map( ["foo", 1], ["bar", "buzz"], [42, "answer"] )
for( entry in map ) {
val e: MapEntry = entry as MapEntry
println("map[%s] = %s"(e.key, e.value))
println("map[%s] = %s"(entry.key, entry.value))
}
void
>>> map[foo] = 1
@ -177,5 +175,4 @@ Notes:
- Spreads inside map literals and `+`/`+=` merges allow any objects as keys.
- When you need computed or non-string keys, use the constructor form `Map(...)`, map literals with computed keys (if supported), or build entries with `=>` and then merge.
[Collection](Collection.md)
[ImmutableMap]: ImmutableMap.md
[Collection](Collection.md)

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@ -9,7 +9,7 @@ Lyng supports first class OOP constructs, based on classes with multiple inherit
The class clause looks like
class Point(x,y)
assertEquals("Point", Point.className)
assert( Point is Class )
>>> void
It creates new `Class` with two fields. Here is the more practical sample:
@ -376,10 +376,11 @@ Functions defined inside a class body are methods, and unless declared
`private` are available to be called from outside the class:
class Point(x,y) {
// private method:
private fun d2() { x*x + y*y }
// public method declaration:
fun length() { sqrt(d2()) }
// private method:
private fun d2() {x*x + y*y}
}
val p = Point(3,4)
// private called from inside public: OK
@ -978,7 +979,7 @@ You can mark a field or a method as static. This is borrowed from Java as more p
static fun exclamation() {
// here foo is a regular var:
Value.foo.x + "!"
foo.x + "!"
}
}
assertEquals( Value.foo.x, "foo" )
@ -989,16 +990,24 @@ You can mark a field or a method as static. This is borrowed from Java as more p
assertEquals( "bar!", Value.exclamation() )
>>> void
Static fields can be accessed from static methods via the class qualifier:
As usual, private statics are not accessible from the outside:
class Test {
static var data = "foo"
static fun getData() { Test.data }
// private, inacessible from outside protected data:
private static var data = null
// the interface to access and change it:
static fun getData() { data }
static fun setData(value) { data = value }
}
assertEquals( "foo", Test.getData() )
Test.data = "bar"
assertEquals("bar", Test.getData() )
// no direct access:
assertThrows { Test.data }
// accessible with the interface:
assertEquals( null, Test.getData() )
Test.setData("fubar")
assertEquals("fubar", Test.getData() )
>>> void
# Extending classes
@ -1007,13 +1016,25 @@ It sometimes happen that the class is missing some particular functionality that
## Extension methods
For example, we want to create an extension method that would test if a value can be interpreted as an integer:
For example, we want to create an extension method that would test if some object of unknown type contains something that can be interpreted as an integer. In this case we _extend_ class `Object`, as it is the parent class for any instance of any type:
fun Int.isInteger() { true }
fun Real.isInteger() { this.toInt() == this }
fun String.isInteger() { (this.toReal() as Real).isInteger() }
fun Object.isInteger() {
when(this) {
// already Int?
is Int -> true
// Let's test:
// real, but with no declimal part?
is Real -> toInt() == this
// string with int or real reuusig code above
is String -> toReal().isInteger()
// otherwise, no:
else -> false
}
}
// Let's test:
assert( 12.isInteger() == true )
assert( 12.1.isInteger() == false )
assert( "5".isInteger() )
@ -1115,7 +1136,7 @@ The same we can provide writable dynamic fields (var-type), adding set method:
// mutable field
"bar" -> storedValueForBar
else -> throw SymbolNotFound()
else -> throw SymbolNotFoundException()
}
}
set { name, value ->

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@ -1,70 +0,0 @@
# ObservableList module
`ObservableList` lives in explicit module `lyng.observable`.
Import it first:
import lyng.observable
>>> void
Create from a regular mutable list:
import lyng.observable
val xs = [1,2,3].observable()
assert(xs is ObservableList<Int>)
assertEquals([1,2,3], xs)
>>> void
## Hook flow
Event order is:
1. `beforeChange(change)` listeners
2. mutation commit
3. `onChange(change)` listeners
4. `changes()` flow emission
Rejection is done by throwing in `beforeChange`.
import lyng.observable
val xs = [1,2].observable()
xs.beforeChange {
throw ChangeRejectionException("no mutation")
}
assertThrows(ChangeRejectionException) { xs += 3 }
assertEquals([1,2], xs)
>>> void
## Subscriptions
`beforeChange` and `onChange` return `Subscription`.
Call `cancel()` to unsubscribe.
import lyng.observable
val xs = [1].observable()
var hits = 0
val sub = xs.onChange { hits++ }
xs += 2
sub.cancel()
xs += 3
assertEquals(1, hits)
>>> void
## Change events
`changes()` returns `Flow<ListChange<T>>` with concrete event classes:
- `ListInsert`
- `ListSet`
- `ListRemove`
- `ListClear`
- `ListReorder`
import lyng.observable
val xs = [10,20].observable()
val it = xs.changes().iterator()
xs[1] = 200
val ev = it.next()
assert(ev is ListSet<Int>)
assertEquals(20, (ev as ListSet<Int>).oldValue)
assertEquals(200, ev.newValue)
it.cancelIteration()
>>> void

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@ -24,14 +24,13 @@ counterpart, _not match_ operator `!~`:
When you need to find groups, and more detailed match information, use `Regex.find`:
val result: RegexMatch? = Regex("abc(\d)(\d)(\d)").find( "bad456 good abc123")
val result = Regex("abc(\d)(\d)(\d)").find( "bad456 good abc123")
assert( result != null )
val match: RegexMatch = result as RegexMatch
assertEquals( 12 ..< 17, match.range )
assertEquals( "abc123", match[0] )
assertEquals( "1", match[1] )
assertEquals( "2", match[2] )
assertEquals( "3", match[3] )
assertEquals( 12 .. 17, result.range )
assertEquals( "abc123", result[0] )
assertEquals( "1", result[1] )
assertEquals( "2", result[2] )
assertEquals( "3", result[3] )
>>> void
Note that the object `RegexMatch`, returned by [Regex.find], behaves much like in many other languages: it provides the
@ -40,12 +39,11 @@ index range and groups matches as indexes.
Match operator actually also provides `RegexMatch` in `$~` reserved variable (borrowed from Ruby too):
assert( "bad456 good abc123" =~ "abc(\d)(\d)(\d)".re )
val match2: RegexMatch = $~ as RegexMatch
assertEquals( 12 ..< 17, match2.range )
assertEquals( "abc123", match2[0] )
assertEquals( "1", match2[1] )
assertEquals( "2", match2[2] )
assertEquals( "3", match2[3] )
assertEquals( 12 .. 17, $~.range )
assertEquals( "abc123", $~[0] )
assertEquals( "1", $~[1] )
assertEquals( "2", $~[2] )
assertEquals( "3", $~[3] )
>>> void
This is often more readable than calling `find`.
@ -61,7 +59,7 @@ string can be either left or right operator, but not both:
Also, string indexing is Regex-aware, and works like `Regex.find` (_not findall!_):
assert( "cd" == ("abcdef"[ "c.".re ] as RegexMatch).value )
assert( "cd" == "abcdef"[ "c.".re ].value )
>>> void
@ -90,3 +88,4 @@ Also, string indexing is Regex-aware, and works like `Regex.find` (_not findall!
[List]: List.md
[Range]: Range.md

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@ -1,8 +1,7 @@
# Set built-in class
# List built-in class
Mutable set of any objects: a group of different objects, no repetitions.
Sets are not ordered, order of appearance does not matter.
For immutable set values, see [ImmutableSet].
val set = Set(1,2,3, "foo")
assert( 1 in set )
@ -27,8 +26,8 @@ no indexing. Use [set.toList] as needed.
// intersection
assertEquals( Set(1,4), Set(3, 1, 4).intersect(Set(2, 4, 1)) )
// or simple (intersection)
assertEquals( Set(1,4), Set(3, 1, 4).intersect(Set(2, 4, 1)) )
// or simple
assertEquals( Set(1,4), Set(3, 1, 4) * Set(2, 4, 1) )
// To find collection elements not present in another collection, use the
// subtract() or `-`:
@ -92,5 +91,4 @@ Sets are only equal when contains exactly same elements, order, as was said, is
Also, it inherits methods from [Iterable].
[Range]: Range.md
[ImmutableSet]: ImmutableSet.md
[Range]: Range.md

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@ -154,10 +154,9 @@ Function annotation can have more args specified at call time. There arguments m
@Registered("bar")
fun foo2() { "called foo2" }
val fooFn: Callable = registered["foo"] as Callable
val barFn: Callable = registered["bar"] as Callable
assertEquals(fooFn(), "called foo")
assertEquals(barFn(), "called foo2")
assertEquals(registered["foo"](), "called foo")
assertEquals(registered["bar"](), "called foo2")
>>> void
[parallelism]: parallelism.md

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@ -1,219 +0,0 @@
# Lyng Language Reference for AI Agents (Current Compiler State)
Purpose: dense, implementation-first reference for generating valid Lyng code.
Primary sources used: `lynglib/src/commonMain/kotlin/net/sergeych/lyng/{Parser,Token,Compiler,Script,TypeDecl}.kt`, `lynglib/stdlib/lyng/root.lyng`, tests in `lynglib/src/commonTest` and `lynglib/src/jvmTest`.
## 1. Ground Rules
- Resolution is compile-time-first. Avoid runtime name/member lookup assumptions.
- `lyng.stdlib` is auto-seeded for normal scripts (default import manager).
- Use explicit casts when receiver type is unknown (`Object`/`Obj`).
- Prefer modern null-safe operators (`?.`, `?:`/`??`, `?=`, `as?`, `!!`).
- Do not rely on fallback opcodes or dynamic member fallback semantics.
## 2. Lexical Syntax
- Comments: `// line`, `/* block */`.
- Strings: `"..."` (supports escapes). Multiline string content is normalized by indentation logic.
- Supported escapes: `\n`, `\r`, `\t`, `\"`, `\\`, `\uXXXX` (4 hex digits).
- Unicode escapes use exactly 4 hex digits (for example: `"\u0416"` -> `Ж`).
- Unknown `\x` escapes in strings are preserved literally as two characters (`\` and `x`).
- Numbers: `Int` (`123`, `1_000`), `Real` (`1.2`, `1e3`), hex (`0xFF`).
- Char: `'a'`, escaped chars supported.
- Supported escapes: `\n`, `\r`, `\t`, `\'`, `\\`, `\uXXXX` (4 hex digits).
- Backslash character in a char literal must be written as `'\\'` (forms like `'\'` are invalid).
- Labels:
- statement label: `loop@ for (...) { ... }`
- label reference: `break@loop`, `continue@loop`, `return@fnLabel`
- Keywords/tokens include (contextual in many places):
- declarations: `fun`/`fn`, `val`, `var`, `class`, `object`, `interface`, `enum`, `type`, `init`
- modifiers: `private`, `protected`, `static`, `abstract`, `closed`, `override`, `extern`, `open`
- flow: `if`, `else`, `when`, `for`, `while`, `do`, `try`, `catch`, `finally`, `throw`, `return`, `break`, `continue`
## 3. Literals and Core Expressions
- Scalars: `null`, `true`, `false`, `void`.
- List literal: `[a, b, c]`, spreads with `...`.
- Spread positions: beginning, middle, end are all valid: `[...a]`, `[0, ...a, 4]`, `[head, ...mid, tail]`.
- Spread source must be a `List` at runtime (non-list spread raises an error).
- Map literal: `{ key: value, x:, ...otherMap }`.
- `x:` means shorthand `x: x`.
- Map spread source must be a `Map`.
- Range literals:
- inclusive: `a..b`
- exclusive end: `a..<b`
- open-ended forms are supported (`a..`, `..b`, `..`).
- optional step: `a..b step 2`
- Lambda literal:
- with params: `{ x, y -> x + y }`
- implicit `it`: `{ it + 1 }`
- Ternary conditional is supported: `cond ? thenExpr : elseExpr`.
## 3.1 Splats in Calls and Lambdas
- Declaration-side variadic parameters use ellipsis suffix:
- functions: `fun f(head, tail...) { ... }`
- lambdas: `{ x, rest... -> ... }`
- Call-side splats use `...expr` and are expanded by argument kind:
- positional splat: `f(...[1,2,3])`
- named splat: `f(...{ a: 1, b: 2 })` (map-style)
- Runtime acceptance for splats:
- positional splat accepts `List` and general `Iterable` (iterable is converted to list first).
- named splat accepts `Map` with string keys only.
- Ordering/validation rules (enforced):
- positional argument cannot follow named arguments (except trailing-block parsing case).
- positional splat cannot follow named arguments.
- duplicate named arguments are errors (including duplicates introduced via named splat).
- unknown named parameters are errors.
- variadic parameter itself cannot be passed as a named argument (`fun g(args..., tail)` then `g(args: ...)` is invalid).
- Trailing block + named arguments:
- if the last callable parameter is already provided by name in parentheses, adding a trailing block is invalid.
## 4. Operators (implemented)
- Assignment: `=`, `+=`, `-=`, `*=`, `/=`, `%=`, `?=`.
- Logical: `||`, `&&`, unary `!`.
- Bitwise: `|`, `^`, `&`, `~`, shifts `<<`, `>>`.
- Equality/comparison: `==`, `!=`, `===`, `!==`, `<`, `<=`, `>`, `>=`, `<=>`, `=~`, `!~`.
- Type/containment: `is`, `!is`, `in`, `!in`, `as`, `as?`.
- Null-safe family:
- member access: `?.`
- safe index: `?[i]`
- safe invoke: `?(...)`
- safe block invoke: `?{ ... }`
- elvis: `?:` and `??`.
- Increment/decrement: prefix and postfix `++`, `--`.
## 5. Declarations
- Variables:
- `val` immutable, `var` mutable.
- top-level/local `val` must be initialized.
- class `val` may be late-initialized, but must be assigned in class body/init before class parse ends.
- destructuring declaration: `val [a, b, rest...] = expr`.
- destructuring declaration details:
- allowed in `val` and `var` declarations.
- supports nested patterns: `val [a, [b, c...], d] = rhs`.
- supports at most one splat (`...`) per pattern level.
- RHS must be a `List`.
- without splat: RHS must have at least as many elements as pattern arity.
- with splat: head/tail elements are bound directly, splat receives a `List`.
- Functions:
- `fun` and `fn` are equivalent.
- full body: `fun f(x) { ... }`
- shorthand: `fun f(x) = expr`.
- generics: `fun f<T>(x: T): T`.
- extension functions: `fun Type.name(...) { ... }`.
- delegated callable: `fun f(...) by delegate`.
- Type aliases:
- `type Name = TypeExpr`
- generic: `type Box<T> = List<T>`
- aliases are expanded structurally.
- Classes/objects/enums/interfaces:
- `interface` is parsed as abstract class synonym.
- `object` supports named singleton and anonymous object expression forms.
- enums support lifted entries: `enum E* { A, B }`.
- multiple inheritance is supported; override is enforced when overriding base members.
- Properties/accessors in class body:
- accessor form supports `get`/`set`, including `private set`/`protected set`.
## 6. Control Flow
- `if` is expression-like.
- `when(value) { ... }` supported.
- branch conditions support equality, `in`, `!in`, `is`, `!is`, and `nullable` predicate.
- `when { ... }` (subject-less) is currently not implemented.
- Loops: `for`, `while`, `do ... while`.
- loop `else` blocks are supported.
- `break value` can return a loop result.
- Exceptions: `try/catch/finally`, `throw`.
## 6.1 Destructuring Assignment (implemented)
- Reassignment form is supported (not only declaration):
- `[x, y] = [y, x]`
- Semantics match destructuring declaration:
- nested patterns allowed.
- at most one splat per pattern level.
- RHS must be a `List`.
- too few RHS elements raises runtime error.
- Targets in pattern are variables parsed from identifier patterns.
## 7. Type System (current behavior)
- Non-null by default (`T`), nullable with `T?`.
- `as` (checked cast), `as?` (safe cast returning `null`), `!!` non-null assertion.
- Type expressions support:
- unions `A | B`
- intersections `A & B`
- function types `(A, B)->R` and receiver form `Receiver.(A)->R`
- variadics in function type via ellipsis (`T...`)
- Generics:
- type params on classes/functions/type aliases
- bounds via `:` with union/intersection expressions
- declaration-site variance via `in` / `out`
- Generic function/class/type syntax examples:
- function: `fun choose<T>(a: T, b: T): T = a`
- class: `class Box<T>(val value: T)`
- alias: `type PairList<T> = List<List<T>>`
- Untyped params default to `Object` (`x`) or `Object?` (`x?` shorthand).
- Untyped `var x` starts as `Unset`; first assignment fixes type tracking in compiler.
## 7.1 Generics Runtime Model and Bounds (AI-critical)
- Lyng generic type information is operational in script execution contexts; do not assume JVM-style full erasure.
- Generic call type arguments can be:
- explicit at call site (`f<Int>(1)` style),
- inferred from runtime values/declared arg types,
- defaulted from type parameter defaults (or `Any` fallback).
- At function execution, generic type parameters are runtime-bound as constants in scope:
- simple non-null class-like types are bound as `ObjClass`,
- complex/nullable/union/intersection forms are bound as `ObjTypeExpr`.
- Practical implication for generated code:
- inside generic code, treat type params as usable type objects in `is`/`in`/type-expression logic (not as purely compile-time placeholders).
- example pattern: `if (value is T) { ... }`.
- Bound syntax (implemented):
- intersection bound: `fun f<T: A & B>(x: T) { ... }`
- union bound: `fun g<T: A | B>(x: T) { ... }`
- Bound checks happen at two points:
- compile-time call checking for resolvable generic calls,
- runtime re-check while binding type params for actual invocation.
- Bound satisfaction is currently class-hierarchy based for class-resolvable parts (including union/intersection combination rules).
- Keep expectations realistic:
- extern-generic runtime ABI for full instance-level generic metadata is still proposal-level (`proposals/extern_generic_runtime_abi.md`), so avoid assuming fully materialized generic-instance metadata everywhere.
## 7.2 Differences vs Java / Kotlin / Scala
- Java:
- Java generics are erased at runtime (except reflection metadata and raw `Class` tokens).
- Lyng generic params in script execution are runtime-bound type objects, so generated code can reason about `T` directly.
- Kotlin:
- Kotlin on JVM is mostly erased; full runtime type access usually needs `inline reified`.
- Lyng generic function execution binds `T` without requiring an inline/reified escape hatch.
- Scala:
- Scala has richer static typing but still runs on JVM erasure model unless carrying explicit runtime evidence (`TypeTag`, etc.).
- Lyng exposes runtime-bound type expressions/classes directly in generic execution scope.
- AI generation rule:
- do not port JVM-language assumptions like “`T` unavailable at runtime unless reified/tagged”.
- in Lyng, prefer direct type-expression-driven branching when useful, but avoid assuming extern object generic args are always introspectable today.
## 8. OOP, Members, and Dispatch
- Multiple inheritance with C3-style linearization behavior is implemented in class machinery.
- Disambiguation helpers are supported:
- qualified this: `this@Base.member()`
- cast view: `(obj as Base).member()`
- On unknown receiver types, compiler allows only Object-safe members:
- `toString`, `toInspectString`, `let`, `also`, `apply`, `run`
- Other members require known receiver type or explicit cast.
## 9. Delegation (`by`)
- Works for `val`, `var`, and `fun`.
- Expected delegate hooks in practice:
- `getValue(thisRef, name)`
- `setValue(thisRef, name, newValue)`
- `invoke(thisRef, name, args...)` for delegated callables
- optional `bind(name, access, thisRef)`
- `@Transient` is recognized for declarations/params and affects serialization/equality behavior.
## 10. Modules and Imports
- `package` and `import module.name` are supported.
- Import form is module-only (no aliasing/selective import syntax in parser).
- Default module ecosystem includes:
- auto-seeded: `lyng.stdlib`
- available by import: `lyng.observable`, `lyng.buffer`, `lyng.serialization`, `lyng.time`
- extra module (when installed): `lyng.io.fs`, `lyng.io.process`
## 11. Current Limitations / Avoid
- No subject-less `when { ... }` yet.
- No regex literal tokenization (`/.../`); use `Regex("...")` or `"...".re`.
- Do not generate runtime name fallback patterns from legacy docs.

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@ -1,75 +0,0 @@
# Lyng Stdlib Reference for AI Agents (Compact)
Purpose: fast overview of what is available by default and what must be imported.
Sources: `lynglib/src/commonMain/kotlin/net/sergeych/lyng/Script.kt`, `lynglib/stdlib/lyng/root.lyng`, `lynglib/src/commonMain/kotlin/net/sergeych/lyng/stdlib_included/observable_lyng.kt`.
## 1. Default Availability
- Normal scripts are auto-seeded with `lyng.stdlib` (default import manager path).
- Root runtime scope also exposes global constants/functions directly.
## 2. Core Global Functions (Root Scope)
- IO/debug: `print`, `println`, `traceScope`.
- Invocation/util: `call`, `run`, `dynamic`, `cached`, `lazy`.
- Assertions/tests: `assert`, `assertEquals`/`assertEqual`, `assertNotEquals`, `assertThrows`.
- Preconditions: `require`, `check`.
- Async/concurrency: `launch`, `yield`, `flow`, `delay`.
- Math: `floor`, `ceil`, `round`, `sin`, `cos`, `tan`, `asin`, `acos`, `atan`, `sinh`, `cosh`, `tanh`, `asinh`, `acosh`, `atanh`, `exp`, `ln`, `log10`, `log2`, `pow`, `sqrt`, `abs`, `clamp`.
## 3. Core Global Constants/Types
- Values: `Unset`, `π`.
- Primitive/class symbols: `Object`, `Int`, `Real`, `Bool`, `Char`, `String`, `Class`, `Callable`.
- Collections/types: `Iterable`, `Iterator`, `Collection`, `Array`, `List`, `ImmutableList`, `Set`, `ImmutableSet`, `Map`, `ImmutableMap`, `MapEntry`, `Range`, `RingBuffer`.
- Random: singleton `Random` and class `SeededRandom`.
- Async types: `Deferred`, `CompletableDeferred`, `Mutex`, `Flow`, `FlowBuilder`.
- Delegation types: `Delegate`, `DelegateContext`.
- Regex types: `Regex`, `RegexMatch`.
- Also present: `Math.PI` namespace constant.
## 4. `lyng.stdlib` Module Surface (from `root.lyng`)
### 4.1 Extern class declarations
- Exceptions/delegation base: `Exception`, `IllegalArgumentException`, `NotImplementedException`, `Delegate`.
- Collections and iterables: `Iterable<T>`, `Iterator<T>`, `Collection<T>`, `Array<T>`, `List<T>`, `ImmutableList<T>`, `Set<T>`, `ImmutableSet<T>`, `Map<K,V>`, `ImmutableMap<K,V>`, `MapEntry<K,V>`, `RingBuffer<T>`.
- Host iterator bridge: `KotlinIterator<T>`.
- Random APIs: `extern object Random`, `extern class SeededRandom`.
### 4.2 High-use extension APIs
- Iteration/filtering: `forEach`, `filter`, `filterFlow`, `filterNotNull`, `filterFlowNotNull`, `drop`, `dropLast`, `takeLast`.
- Search/predicates: `findFirst`, `findFirstOrNull`, `any`, `all`, `count`, `first`, `last`.
- Mapping/aggregation: `map`, `flatMap`, `flatten`, `sum`, `sumOf`, `minOf`, `maxOf`.
- Ordering: `sorted`, `sortedBy`, `shuffled`, `List.sort`, `List.sortBy`.
- String helper: `joinToString`, `String.re`.
### 4.3 Delegation helpers
- `enum DelegateAccess { Val, Var, Callable }`
- `interface Delegate<T,ThisRefType=void>` with `getValue`, `setValue`, `invoke`, `bind`.
- `class lazy<T,...>` delegate implementation.
- `fun with(self, block)` helper.
### 4.4 Other module-level symbols
- `$~` (last regex match object).
- `TODO(message?)` utility.
- `StackTraceEntry` class.
- `Random.nextInt()`, `Random.nextFloat()`, `Random.next(range)`, `Random.seeded(seed)`.
- `SeededRandom.nextInt()`, `SeededRandom.nextFloat()`, `SeededRandom.next(range)`.
## 5. Additional Built-in Modules (import explicitly)
- `import lyng.observable`
- `Observable`, `Subscription`, `ObservableList`, `ListChange` and change subtypes, `ChangeRejectionException`.
- `import lyng.buffer`
- `Buffer`, `MutableBuffer`.
- `import lyng.serialization`
- `Lynon` serialization utilities.
- `import lyng.time`
- `Instant`, `DateTime`, `Duration`, and module `delay`.
## 6. Optional (lyngio) Modules
Requires installing `lyngio` into the import manager from host code.
- `import lyng.io.fs` (filesystem `Path` API)
- `import lyng.io.process` (process execution API)
- `import lyng.io.console` (console capabilities, geometry, ANSI/output, events)
## 7. AI Generation Tips
- Assume `lyng.stdlib` APIs exist in regular script contexts.
- For platform-sensitive code (`fs`, `process`, `console`), gate assumptions and mention required module install.
- Prefer extension-method style (`items.filter { ... }`) and standard scope helpers (`let`/`also`/`apply`/`run`).

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@ -34,18 +34,13 @@ Valid examples:
Ellipsis are used to declare variadic arguments. It basically means "all the arguments available here". It means, ellipsis argument could be in any part of the list, being, end or middle, but there could be only one ellipsis argument and it must not have default value, its default value is always `[]`, en empty list.
Ellipsis can also appear in **function types** to denote a variadic position:
var f: (Int, Object..., String)->Real
var anyArgs: (...)->Int // shorthand for (Object...)->Int
Ellipsis argument receives what is left from arguments after processing regular one that could be before or after.
Ellipsis could be a first argument:
fun testCountArgs(data...,size) {
assert(size is Int)
assertEquals(size, (data as List).size)
assertEquals(size, data.size)
}
testCountArgs( 1, 2, "three", 3)
>>> void
@ -54,7 +49,7 @@ Ellipsis could also be a last one:
fun testCountArgs(size, data...) {
assert(size is Int)
assertEquals(size, (data as List).size)
assertEquals(size, data.size)
}
testCountArgs( 3, 10, 2, "three")
>>> void
@ -63,7 +58,7 @@ Or in the middle:
fun testCountArgs(size, data..., textToReturn) {
assert(size is Int)
assertEquals(size, (data as List).size)
assertEquals(size, data.size)
textToReturn
}
testCountArgs( 3, 10, 2, "three", "All OK")

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@ -4,7 +4,7 @@ Lyng is a tiny, embeddable, Kotlin‑first scripting language. This page shows,
- add Lyng to your build
- create a runtime and execute scripts
- declare extern globals in Lyng and bind them from Kotlin
- define functions and variables from Kotlin
- read variable values back in Kotlin
- call Lyng functions from Kotlin
- create your own packages and import them in Lyng
@ -65,74 +65,30 @@ val run2 = script.execute(scope)
`Scope.eval("...")` is a shortcut that compiles and executes on the given scope.
### 3) Preferred: bind extern globals from Kotlin
### 3) Define variables from Kotlin
For module-level APIs, the default workflow is:
1. declare globals in Lyng using `extern fun` / `extern val` / `extern var`;
2. bind Kotlin implementation via `ModuleScope.globalBinder()`.
To expose data to Lyng, add constants (read‑only) or mutable variables to the scope. All values in Lyng are `Obj` instances; the core types live in `net.sergeych.lyng.obj`.
```kotlin
import net.sergeych.lyng.bridge.*
import net.sergeych.lyng.obj.ObjInt
import net.sergeych.lyng.obj.ObjString
// Read‑only constant
scope.addConst("pi", ObjReal(3.14159))
val im = Script.defaultImportManager.copy()
im.addPackage("my.api") { module ->
module.eval("""
extern fun globalFun(v: Int): Int
extern var globalProp: String
extern val globalVersion: String
""".trimIndent())
// Mutable variable: create or update
scope.addOrUpdateItem("counter", ObjInt(0))
val binder = module.globalBinder()
binder.bindGlobalFun1<Int>("globalFun") { v ->
ObjInt.of((v + 1).toLong())
}
var prop = "initial"
binder.bindGlobalVar(
name = "globalProp",
get = { prop },
set = { prop = it }
)
binder.bindGlobalVar(
name = "globalVersion",
get = { "1.0.0" } // readonly: setter omitted
)
}
// Use it from Lyng
scope.eval("counter = counter + 1")
```
Usage from Lyng:
```lyng
import my.api
assertEquals(42, globalFun(41))
assertEquals("initial", globalProp)
globalProp = "changed"
assertEquals("changed", globalProp)
assertEquals("1.0.0", globalVersion)
```
For custom argument handling and full runtime access:
Tip: Lyng values can be converted back to Kotlin with `toKotlin(scope)`:
```kotlin
binder.bindGlobalFun("sum3") {
requireExactCount(3)
ObjInt.of((int(0) + int(1) + int(2)).toLong())
}
binder.bindGlobalFunRaw("echoRaw") { _, args ->
args.firstAndOnly()
}
val current = (scope.eval("counter")).toKotlin(scope) // Any? (e.g., Int/Double/String/List)
```
### 4) Low-level: direct functions/variables from Kotlin
### 4) Add Kotlin‑backed functions
Use this when you intentionally want raw `Scope` APIs. For most module APIs, prefer section 3.
Use `Scope.addFn`/`addVoidFn` to register functions implemented in Kotlin. Inside the lambda, use `this.args` to access arguments and return an `Obj`.
```kotlin
// A function returning value
@ -158,17 +114,6 @@ scope.eval("val y = inc(41); log('Answer:', y)")
You can register multiple names (aliases) at once: `addFn<ObjInt>("inc", "increment") { ... }`.
Scope-backed Kotlin lambdas receive a `ScopeFacade` (not a full `Scope`). For migration and convenience, these utilities are available on the facade:
- Access: `args`, `pos`, `thisObj`, `get(name)`
- Invocation: `call(...)`, `resolve(...)`, `assign(...)`, `toStringOf(...)`, `inspect(...)`, `trace(...)`
- Args helpers: `requiredArg<T>()`, `requireOnlyArg<T>()`, `requireExactCount(...)`, `requireNoArgs()`, `thisAs<T>()`
- Errors: `raiseError(...)`, `raiseClassCastError(...)`, `raiseIllegalArgument(...)`, `raiseIllegalState(...)`, `raiseNoSuchElement(...)`,
`raiseSymbolNotFound(...)`, `raiseNotImplemented(...)`, `raiseNPE()`, `raiseIndexOutOfBounds(...)`, `raiseIllegalAssignment(...)`,
`raiseUnset(...)`, `raiseNotFound(...)`, `raiseAssertionFailed(...)`, `raiseIllegalOperation(...)`, `raiseIterationFinished()`
If you truly need the full `Scope` (e.g., for low-level interop), use `requireScope()` explicitly.
### 5) Add Kotlin‑backed fields
If you need a simple field (with a value) instead of a computed property, use `createField`. This adds a field to the class that will be present in all its instances.
@ -243,12 +188,6 @@ For extensions and libraries, the **preferred** workflow is Lyng‑first: declar
This keeps Lyng semantics (visibility, overrides, type checks) in Lyng, while Kotlin supplies the behavior.
Pure extern declarations use the simplified rule set:
- `extern class` / `extern object` are declaration-only ABI surfaces.
- Every member in their body is implicitly extern (you may still write `extern`, but it is redundant).
- Plain Lyng member implementations inside `extern class` / `extern object` are not allowed.
- Put Lyng behavior into regular classes or extension methods.
```lyng
// Lyng side (in a module)
class Counter {
@ -257,22 +196,7 @@ class Counter {
}
```
Note: members of `extern class` / `extern object` are treated as extern by default, so the compiler emits ABI slots that Kotlin bindings attach to. This applies to functions and properties bound via `addFun` / `addVal` / `addVar`.
Example of pure extern class declaration:
```lyng
extern class HostCounter {
var value: Int
fun inc(by: Int): Int
}
```
If you need Lyng-side convenience behavior, add it as an extension:
```lyng
fun HostCounter.bump() = inc(1)
```
Note: members must be marked `extern` so the compiler emits the ABI slots that Kotlin bindings attach to. This applies to functions and properties bound via `addFun` / `addVal` / `addVar`.
```kotlin
// Kotlin side (binding)
@ -282,14 +206,14 @@ moduleScope.eval("class Counter { extern var value: Int; extern fun inc(by: Int)
moduleScope.bind("Counter") {
addVar(
name = "value",
get = { thisObj.readField(this, "value").value },
set = { v -> thisObj.writeField(this, "value", v) }
get = { _, self -> self.readField(this, "value").value },
set = { _, self, v -> self.writeField(this, "value", v) }
)
addFun("inc") {
addFun("inc") { _, self, args ->
val by = args.requiredArg<ObjInt>(0).value
val current = thisObj.readField(this, "value").value as ObjInt
val current = self.readField(this, "value").value as ObjInt
val next = ObjInt(current.value + by)
thisObj.writeField(this, "value", next)
self.writeField(this, "value", next)
next
}
}
@ -301,66 +225,6 @@ Notes:
- Use [LyngClassBridge] to bind by name/module, or by an already resolved `ObjClass`.
- Use `ObjInstance.data` / `ObjClass.classData` to attach Kotlin‑side state when needed.
### 6.5a) Bind Kotlin implementations to declared Lyng objects
For `extern object` declarations, bind implementations to the singleton instance using `ModuleScope.bindObject`.
This mirrors class binding but targets an already created object instance.
As with class binding, you must first add/evaluate the Lyng declaration into that module scope, then bind Kotlin handlers.
```kotlin
// Kotlin side (binding)
val moduleScope = importManager.createModuleScope(Pos.builtIn, "bridge.obj")
// 1) Seed the module with the Lyng declaration first
moduleScope.eval("""
extern object HostObject {
extern fun add(a: Int, b: Int): Int
extern val status: String
extern var count: Int
}
""".trimIndent())
// 2) Then bind Kotlin implementations to that declared object
moduleScope.bindObject("HostObject") {
classData = "OK"
init { _ -> data = 0L }
addFun("add") {
val a = args.requiredArg<ObjInt>(0).value
val b = args.requiredArg<ObjInt>(1).value
ObjInt.of(a + b)
}
addVal("status") { ObjString(classData as String) }
addVar(
"count",
get = { ObjInt.of((thisObj as ObjInstance).data as Long) },
set = { value -> (thisObj as ObjInstance).data = (value as ObjInt).value }
)
}
```
Notes:
- Required order: declare/eval Lyng object in the module first, then call `bindObject(...)`.
This is the pattern covered by `BridgeBindingTest.testExternObjectBinding`.
- Members must be extern (explicitly, or implicitly via `extern object`) so the compiler emits ABI slots for Kotlin bindings.
- You can also bind by name/module via `LyngObjectBridge.bind(...)`.
Minimal `extern fun` example:
```kotlin
val moduleScope = importManager.createModuleScope(Pos.builtIn, "bridge.ping")
moduleScope.eval("""
extern object HostObject {
extern fun ping(): Int
}
""".trimIndent())
moduleScope.bindObject("HostObject") {
addFun("ping") { ObjInt.of(7) }
}
```
### 6.6) Preferred: Kotlin reflection bridge for call‑by‑name
For Kotlin code that needs dynamic access to Lyng variables, functions, or members, use the bridge resolver.
@ -449,9 +313,6 @@ Key concepts:
Register a Kotlin‑built package:
```kotlin
import net.sergeych.lyng.bridge.*
import net.sergeych.lyng.obj.ObjInt
val scope = Script.newScope()
// Access the import manager behind this scope
@ -459,19 +320,11 @@ val im: ImportManager = scope.importManager
// Register a package "my.tools"
im.addPackage("my.tools") { module: ModuleScope ->
module.eval(
"""
extern val version: String
extern fun triple(x: Int): Int
""".trimIndent()
)
val binder = module.globalBinder()
binder.bindGlobalVar(
name = "version",
get = { "1.0" }
)
binder.bindGlobalFun1<Int>("triple") { x ->
ObjInt.of((x * 3).toLong())
// Expose symbols inside the module scope
module.addConst("version", ObjString("1.0"))
module.addFn<ObjInt>("triple") {
val x = args.firstAndOnly() as ObjInt
ObjInt(x.value * 3)
}
}

View File

@ -109,24 +109,6 @@ Examples (T = A | B):
B in T // true
T is A | B // true
# Nullability checks for types
Use `is nullable` to check whether a type expression accepts `null`:
T is nullable
T !is nullable
This works with concrete and generic types:
fun describe<T>(x: T): String = when (T) {
nullable -> "nullable"
else -> "non-null"
}
Equivalent legacy form:
null is T
# Practical examples
fun acceptInts<T: Int>(xs: List<T>) { }

View File

@ -9,12 +9,9 @@ should be compatible with other IDEA flavors, notably [OpenIDE](https://openide.
- reformat code (indents, spaces)
- reformat on paste
- smart enter key
- `.lyng.d` definition files (merged into analysis for completion, navigation, Quick Docs, and error checking)
Features are configurable via the plugin settings page, in system settings.
See `docs/lyng_d_files.md` for `.lyng.d` syntax and examples.
> Recommended for IntelliJ-based IDEs: While IntelliJ can import TextMate bundles
> (Settings/Preferences → Editor → TextMate Bundles), the native Lyng plugin provides
> better support (formatting, smart enter, background analysis, etc.). Prefer installing
@ -29,4 +26,4 @@ See `docs/lyng_d_files.md` for `.lyng.d` syntax and examples.
### [Download plugin v0.0.2-SNAPSHOT](https://lynglang.com/distributables/lyng-idea-0.0.2-SNAPSHOT.zip)
Your ideas and bugreports are welcome on the [project gitea page](https://gitea.sergeych.net/SergeychWorks/lyng/issues)
Your ideas and bugreports are welcome on the [project gitea page](https://gitea.sergeych.net/SergeychWorks/lyng/issues)

View File

@ -1,112 +0,0 @@
### lyng.io.console
`lyng.io.console` provides optional rich console support for terminal applications.
> **Note:** this module is part of `lyngio`. It must be explicitly installed into the import manager by host code.
>
> **CLI note:** the `lyng` CLI now installs `lyng.io.console` in its base scope by default, so scripts can simply `import lyng.io.console`.
#### Install in host
```kotlin
import net.sergeych.lyng.Script
import net.sergeych.lyng.io.console.createConsoleModule
import net.sergeych.lyngio.console.security.PermitAllConsoleAccessPolicy
suspend fun initScope() {
val scope = Script.newScope()
createConsoleModule(PermitAllConsoleAccessPolicy, scope)
}
```
#### Use in Lyng script
```lyng
import lyng.io.console
println("supported = " + Console.isSupported())
println("tty = " + Console.isTty())
println("ansi = " + Console.ansiLevel())
println("geometry = " + Console.geometry())
Console.write("hello\n")
Console.home()
Console.clear()
Console.moveTo(1, 1)
Console.clearLine()
Console.enterAltScreen()
Console.leaveAltScreen()
Console.setCursorVisible(true)
Console.flush()
```
#### Tetris sample
The repository includes a full interactive Tetris sample that demonstrates:
- alternate screen rendering
- raw keyboard input
- resize handling
- typed console events
![Lyng Tetris sample](/tetris.png)
Run it from the project root in a real TTY:
```bash
lyng examples/tetris_console.lyng
```
#### API
- `Console.isSupported(): Bool` — whether console control is available on this platform/runtime.
- `Console.isTty(): Bool` — whether output is attached to a TTY.
- `Console.ansiLevel(): ConsoleAnsiLevel``NONE`, `BASIC16`, `ANSI256`, `TRUECOLOR`.
- `Console.geometry(): ConsoleGeometry?``{columns, rows}` as typed object or `null`.
- `Console.details(): ConsoleDetails` — consolidated capability object.
- `Console.write(text: String)` — writes to console output.
- `Console.flush()` — flushes buffered output.
- `Console.home()` — moves cursor to top-left.
- `Console.clear()` — clears visible screen.
- `Console.moveTo(row: Int, column: Int)` — moves cursor to 1-based row/column.
- `Console.clearLine()` — clears current line.
- `Console.enterAltScreen()` — switch to alternate screen buffer.
- `Console.leaveAltScreen()` — return to normal screen buffer.
- `Console.setCursorVisible(visible: Bool)` — shows/hides cursor.
- `Console.events(): ConsoleEventStream` — endless iterable source of typed events: `ConsoleResizeEvent`, `ConsoleKeyEvent`.
- `Console.setRawMode(enabled: Bool): Bool` — requests raw input mode, returns `true` if changed.
#### Event Iteration
Use events from a loop, typically in a separate coroutine:
```lyng
launch {
for (ev in Console.events()) {
if (ev is ConsoleKeyEvent) {
// handle key
}
}
}
```
#### Event format
`Console.events()` emits `ConsoleEvent` with:
- `type: ConsoleEventType``UNKNOWN`, `RESIZE`, `KEY_DOWN`, `KEY_UP`
Additional fields:
- `ConsoleResizeEvent`: `columns`, `rows`
- `ConsoleKeyEvent`: `key`, `code`, `ctrl`, `alt`, `shift`, `meta`
#### Security policy
The module uses `ConsoleAccessPolicy` with operations:
- `WriteText(length)`
- `ReadEvents`
- `SetRawMode(enabled)`
For permissive mode, use `PermitAllConsoleAccessPolicy`.

View File

@ -1,116 +0,0 @@
# `.lyng.d` Definition Files
`.lyng.d` files declare Lyng symbols for tooling without shipping runtime implementations. The IntelliJ IDEA plugin merges
all `*.lyng.d` files from the current directory and its parent directories into the active file’s analysis, enabling:
- completion
- navigation
- error checking for declared symbols
- Quick Docs for declarations defined in `.lyng.d`
Place `*.lyng.d` files next to the code they describe (or in a parent folder). The plugin will pick them up automatically.
## Writing `.lyng.d` Files
You can declare any language-level symbol in a `.lyng.d` file. Use doc comments before declarations to make Quick Docs
work in the IDE. The doc parser accepts standard comments (`/** ... */` or `// ...`) and supports tags like `@param`.
### Full Example
```lyng
/** Library entry point */
extern fun connect(url: String, timeoutMs: Int = 5000): Client
/** Type alias with generics */
type NameMap = Map<String, String>
/** Multiple inheritance via interfaces */
interface A { abstract fun a(): Int }
interface B { abstract fun b(): Int }
/** A concrete class implementing both */
class Multi(name: String) : A, B {
/** Public field */
val id: Int = 0
/** Mutable property with accessors */
var size: Int
get() = 0
set(v) { }
/** Instance method */
fun a(): Int = 1
fun b(): Int = 2
}
/** Nullable and dynamic types */
extern val dynValue: dynamic
extern var dynVar: dynamic?
/** Delegated property */
class LazyBox(val create) {
fun getValue(thisRef, name) = create()
}
val cached by LazyBox { 42 }
/** Delegated function */
object RpcDelegate {
fun invoke(thisRef, name, args...) = Unset
}
fun remoteCall by RpcDelegate
/** Singleton object */
object Settings {
val version: String = "1.0"
}
/** Class with documented members */
class Client {
/** Returns a greeting. */
fun greet(name: String): String = "hi " + name
}
```
See a runnable sample file in `docs/samples/definitions.lyng.d`.
Notes:
- Use real bodies if the declaration is not `extern` or `abstract`.
- If you need purely declarative stubs, prefer `extern` members (see `embedding.md`).
## Doc Comment Format
Doc comments are picked up when they immediately precede a declaration.
```lyng
/**
* A sample function.
* @param name user name
* @return greeting string
*/
fun greet(name: String): String = "hi " + name
```
## Generating `.lyng.d` Files
You can generate `.lyng.d` as part of your build. A common approach is to write a Gradle task that emits a file from a
template or a Kotlin data model.
Example (pseudo-code):
```kotlin
tasks.register("generateLyngDefs") {
doLast {
val out = file("src/main/lyng/api.lyng.d")
out.writeText(
"""
/** Generated API */
fun ping(): Int
""".trimIndent()
)
}
}
```
Place the generated file in your source tree, and the IDE will load it automatically.

View File

@ -6,13 +6,12 @@
1. **Security:** I/O and process execution are sensitive operations. By keeping them in a separate module, we ensure that the Lyng core remains 100% safe by default. You only enable what you explicitly need.
2. **Footprint:** Not every script needs filesystem or process access. Keeping these as a separate module helps minimize the dependency footprint for small embedded projects.
3. **Control:** `lyngio` provides fine-grained security policies (`FsAccessPolicy`, `ProcessAccessPolicy`, `ConsoleAccessPolicy`) that allow you to control exactly what a script can do.
3. **Control:** `lyngio` provides fine-grained security policies (`FsAccessPolicy`, `ProcessAccessPolicy`) that allow you to control exactly what a script can do.
#### Included Modules
- **[lyng.io.fs](lyng.io.fs.md):** Async filesystem access. Provides the `Path` class for file/directory operations, streaming, and globbing.
- **[lyng.io.process](lyng.io.process.md):** External process execution and shell commands. Provides `Process`, `RunningProcess`, and `Platform` information.
- **[lyng.io.console](lyng.io.console.md):** Rich console/TTY access. Provides `Console` capability detection, geometry, output, and iterable events.
---
@ -40,10 +39,8 @@ To use `lyngio` modules in your scripts, you must install them into your Lyng sc
import net.sergeych.lyng.Script
import net.sergeych.lyng.io.fs.createFs
import net.sergeych.lyng.io.process.createProcessModule
import net.sergeych.lyng.io.console.createConsoleModule
import net.sergeych.lyngio.fs.security.PermitAllAccessPolicy
import net.sergeych.lyngio.process.security.PermitAllProcessAccessPolicy
import net.sergeych.lyngio.console.security.PermitAllConsoleAccessPolicy
suspend fun runMyScript() {
val scope = Script.newScope()
@ -51,17 +48,14 @@ suspend fun runMyScript() {
// Install modules with policies
createFs(PermitAllAccessPolicy, scope)
createProcessModule(PermitAllProcessAccessPolicy, scope)
createConsoleModule(PermitAllConsoleAccessPolicy, scope)
// Now scripts can import them
scope.eval("""
import lyng.io.fs
import lyng.io.process
import lyng.io.console
println("Working dir: " + Path(".").readUtf8())
println("OS: " + Platform.details().name)
println("TTY: " + Console.isTty())
""")
}
```
@ -74,22 +68,20 @@ suspend fun runMyScript() {
- **Filesystem Security:** Implement `FsAccessPolicy` to restrict access to specific paths or operations (e.g., read-only access to a sandbox directory).
- **Process Security:** Implement `ProcessAccessPolicy` to restrict which executables can be run or to disable shell execution entirely.
- **Console Security:** Implement `ConsoleAccessPolicy` to control output writes, event reads, and raw mode switching.
For more details, see the specific module documentation:
- [Filesystem Security Details](lyng.io.fs.md#access-policy-security)
- [Process Security Details](lyng.io.process.md#security-policy)
- [Console Module Details](lyng.io.console.md)
---
#### Platform Support Overview
| Platform | lyng.io.fs | lyng.io.process | lyng.io.console |
| :--- | :---: | :---: | :---: |
| **JVM** | ✅ | ✅ | ✅ (baseline) |
| **Native (Linux/macOS)** | ✅ | ✅ | 🚧 |
| **Native (Windows)** | ✅ | 🚧 (Planned) | 🚧 |
| **Android** | ✅ | ❌ | ❌ |
| **NodeJS** | ✅ | ❌ | ❌ |
| **Browser / Wasm** | ✅ (In-memory) | ❌ | ❌ |
| Platform | lyng.io.fs | lyng.io.process |
| :--- | :---: | :---: |
| **JVM** | ✅ | ✅ |
| **Native (Linux/macOS)** | ✅ | ✅ |
| **Native (Windows)** | ✅ | 🚧 (Planned) |
| **Android** | ✅ | ❌ |
| **NodeJS** | ✅ | ❌ |
| **Browser / Wasm** | ✅ (In-memory) | ❌ |

View File

@ -110,29 +110,6 @@ For example:
assert( 5.clamp(0..10) == 5 )
>>> void
## Random values
Lyng stdlib provides a global random singleton and deterministic seeded generators:
| name | meaning |
|--------------------------|---------|
| Random.nextInt() | random `Int` from full platform range |
| Random.nextFloat() | random `Real` in `[0,1)` |
| Random.next(range) | random value from the given finite range |
| Random.seeded(seed) | creates deterministic generator |
| SeededRandom.nextInt() | deterministic random `Int` |
| SeededRandom.nextFloat() | deterministic random `Real` in `[0,1)` |
| SeededRandom.next(range) | deterministic random value from range |
Examples:
val rng = Random.seeded(1234)
assert( rng.next(1..10) in 1..10 )
assert( rng.next('a'..<'f') in 'a'..<'f' )
assert( rng.next(0.0..<1.0) >= 0.0 )
assert( rng.next(0.0..<1.0) < 1.0 )
>>> void
## Scientific constant
| name | meaning |

View File

@ -4,7 +4,7 @@
Before kotlin 2.0, there was an excellent library, kotlinx.datetime, which was widely used everywhere, also in Lyng and its dependencies.
When Kotlin 2.0 was released, or soon after, JetBrains made a perplexing decision to remove `Instant` and `Clock` from kotlinx.datetime and replace it with _yet experimental_ analogs in `kotlin.time`.
When kotlin 2.0 was released, or soon after, JetBrains made an exptic decision to remove `Instant` and `Clock` from kotlinx.datetime and replace it with _yet experimental_ analogs in `kotlin.time`.
The problem is, these were not quite the same (these weren't `@Serializable`!), so people didn't migrate with ease. Okay, then JetBrains decided to not only deprecate it but also make them unusable on Apple targets. It sort of split auditories of many published libraries to those who hate JetBrains and Apple and continue to use 1.9-2.0 compatible versions that no longer work with Kotlin 2.2 on Apple targets (but work pretty well with earlier Kotlin or on other platforms).
@ -12,14 +12,14 @@ Later JetBrains added serializers for their new `Instant` and `Clock` types, but
## Solution
We hereby publish a new version of Lyng, 1.0.8-SNAPSHOT, which uses `kotlin.time.Instant` and `kotlin.time.Clock` instead of `kotlinx.datetime.Instant` and `kotlinx.datetime.Clock`. It is in other aspects compatible also with Lynon encoded binaries. You might need to migrate your code to use `kotlin.time` types. (LocalDateTime/TimeZone still come from `kotlinx.datetime`.)
We hereby publish a new version of Lyng, 1.0.8-SNAPSHOT, which uses `ktlin.time.Instant` and `kotlin.time.Clock` instead of `kotlinx.datetime.Instant` and `kotlinx.datetime.Clock; it is in other aspects compatible also with Lynon encoded binaries. Still you might need to migrate your code to use `kotlinx.datetime` types.
So, if you are getting errors with new version, please do:
So, if you are getting errors with new version, plase do:
- upgrade to Kotlin 2.2
- upgrade to Lyng 1.0.8-SNAPSHOT
- replace in your code imports (or other uses) of `kotlinx.datetime.Clock` to `kotlin.time.Clock` and `kotlinx.datetime.Instant` to `kotlin.time.Instant`.
- replace in your code imports (or other uses) of`kotlinx.datetime.Clock` to `kotlin.time.Clock` and `kotlinx.datetime.Instant` to `kotlin.time.Instant`.
This should solve the problem and hopefully we'll see no more such "brilliant" ideas from IDEA ideologspersons.
This should solve the problem and hopefully we'll see no more suh a brillant ideas from IDEA ideologspersons.
Sorry for inconvenience and send a ray of hate to JetBrains ;)
Sorry for inconvenicence and send a ray of hate to JetBrains ;)

View File

@ -49,7 +49,7 @@ Suppose we have a resource, that could be used concurrently, a counter in our ca
delay(100)
counter = c + 1
}
}.forEach { (it as Deferred).await() }
}.forEach { it.await() }
assert(counter < 50) { "counter is "+counter }
>>> void
@ -64,12 +64,13 @@ Using [Mutex] makes it all working:
launch {
// slow increment:
mutex.withLock {
val c = counter ?: 0
val c = counter
delay(10)
counter = c + 1
}
}
}.forEach { (it as Deferred).await() }
assert(counter in 1..4)
}.forEach { it.await() }
assertEquals(4, counter)
>>> void
now everything works as expected: `mutex.withLock` makes them all be executed in sequence, not in parallel.
@ -223,14 +224,17 @@ Future work: introduce thread‑safe pooling (e.g., per‑thread pools or confin
### Closures inside coroutine helpers (launch/flow)
Closures executed by `launch { ... }` and `flow { ... }` use **compile‑time resolution** just like any other Lyng code:
Closures executed by `launch { ... }` and `flow { ... }` resolve names using the `ClosureScope` rules:
- **Captured locals are slots**: outer locals are resolved at compile time and captured as frame‑slot references, so they remain visible across suspension points.
- **Members are statically resolved**: member access requires a statically known receiver type or an explicit cast (except `Object` members).
- **No runtime fallbacks**: there is no dynamic name lookup or “search parent scopes” at runtime for missing symbols.
1. **Current frame locals and arguments**: Variables defined within the current closure execution.
2. **Captured lexical ancestry**: Outer local variables captured at the site where the closure was defined (the "lexical environment").
3. **Captured receiver members**: If the closure was defined within a class or explicitly bound to an object, it checks members of that object (`this`), following MRO and respecting visibility.
4. **Caller environment**: Falls back to the calling context (e.g., the caller's `this` or local variables).
5. **Global/Module fallbacks**: Final check for module-level constants and global functions.
Implications:
- Global helpers like `delay(ms)` and `yield()` must be imported/known at compile time.
- If you need dynamic access, use explicit helpers (e.g., `dynamic { ... }`) rather than relying on scope resolution.
- Outer locals (e.g., `counter`) stay visible across suspension points.
- Global helpers like `delay(ms)` and `yield()` are available from inside closures.
- If you write your own async helpers, execute user lambdas under `ClosureScope(callScope, capturedCreatorScope)` and avoid manual ancestry walking.
See also: [Scopes and Closures: compile-time resolution](scopes_and_closures.md)
See also: [Scopes and Closures: resolution and safety](scopes_and_closures.md)

View File

@ -1,65 +0,0 @@
/**
* Sample .lyng.d file for IDE support.
* Demonstrates declarations and doc comments.
*/
/** Simple function with default and named parameters. */
extern fun connect(url: String, timeoutMs: Int = 5000): Client
/** Type alias with generics. */
type NameMap = Map<String, String>
/** Multiple inheritance via interfaces. */
interface A { abstract fun a(): Int }
interface B { abstract fun b(): Int }
/** A concrete class implementing both. */
class Multi(name: String) : A, B {
/** Public field. */
val id: Int = 0
/** Mutable property with accessors. */
var size: Int
get() = 0
set(v) { }
/** Instance method. */
fun a(): Int = 1
fun b(): Int = 2
}
/** Nullable and dynamic types. */
extern val dynValue: dynamic
extern var dynVar: dynamic?
/** Delegated property provider. */
class LazyBox(val create) {
fun getValue(thisRef, name) = create()
}
/** Delegated property using provider. */
val cached by LazyBox { 42 }
/** Delegated function. */
object RpcDelegate {
fun invoke(thisRef, name, args...) = Unset
}
/** Remote function proxy. */
fun remoteCall by RpcDelegate
/** Singleton object. */
object Settings {
/** Version string. */
val version: String = "1.0"
}
/**
* Client API entry.
* @param name user name
* @return greeting string
*/
class Client {
/** Returns a greeting. */
fun greet(name: String): String = "hi " + name
}

View File

@ -1,23 +1,23 @@
// Sample: Operator Overloading in Lyng
class Vector<T>(val x: T, val y: T) {
class Vector(val x, val y) {
// Overload +
fun plus(other: Vector<U>) = Vector(x + other.x, y + other.y)
fun plus(other) = Vector(x + other.x, y + other.y)
// Overload -
fun minus(other: Vector<U>) = Vector(x - other.x, y - other.y)
fun minus(other) = Vector(x - other.x, y - other.y)
// Overload unary -
fun negate() = Vector(-x, -y)
// Overload ==
fun equals(other) {
if (other is Vector<U>) x == other.x && y == other.y
if (other is Vector) x == other.x && y == other.y
else false
}
// Overload * (scalar multiplication)
fun mul(scalar: Int | Real) = Vector(x * scalar, y * scalar)
fun mul(scalar) = Vector(x * scalar, y * scalar)
override fun toString() = "Vector(${x}, ${y})"
}

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@ -13,6 +13,7 @@ fun findSumLimit(f) {
println("limit reached after "+n+" rounds")
break sum
}
n++
}
else {
println("limit not reached")

View File

@ -1,10 +0,0 @@
fun describe<T>(x: T): String = when (T) {
nullable -> "nullable"
else -> "non-null"
}
type MaybeInt = Int?
assert(MaybeInt is nullable)
assert(!(Int is nullable))
assertEquals("nullable", describe<Int?>(null))
assertEquals("non-null", describe<Int>(1))

View File

@ -1,18 +1,94 @@
# Scopes and Closures: compile-time resolution
# Scopes and Closures: resolution and safety
Attention to AI: name lookup in runtime `Scope` is legacy. The bytecode compiler uses **compile-time name/member resolution only**.
Attention to AI: name lookup is ibsolete and must not be used with bytecode compiler
This page documents the **current** rules: static name resolution, closure captures, and the limited role of runtime `Scope` in Kotlin interop and explicit dynamic helpers.
This page documents how name resolution works with `ClosureScope`, how to avoid recursion pitfalls, and how to safely capture and execute callbacks that need access to outer locals.
## Current rules (bytecode compiler)
- **All names resolve at compile time**: locals, parameters, captures, members, imports, and module globals must be known when compiling. Missing symbols are compile-time errors.
- **No runtime fallbacks**: there is no dynamic name lookup, no fallback opcodes, and no “search parent scopes” at runtime for missing names.
- **Object members on unknown types only**: `toString`, `toInspectString`, `let`, `also`, `apply`, `run` are allowed on unknown types; all other members require a statically known receiver type or an explicit cast.
- **Closures capture slots**: lambdas and nested functions capture **frame slots** directly. Captures are resolved at compile time and compiled to slot references.
- **Scope is a reflection facade**: `Scope` is used only for Kotlin interop or explicit dynamic helpers. It must **not** be used for general symbol resolution in compiled Lyng code.
## Why this matters
Name lookup across nested scopes and closures can accidentally form recursive resolution paths or hide expected symbols (outer locals, module/global functions). The rules below ensure predictable resolution and prevent infinite recursion.
## Explicit dynamic access (opt-in only)
Dynamic name access is available only via explicit helpers (e.g., `dynamic { get { name -> ... } }`). It is **not** a fallback for normal member or variable access.
## Resolution order in ClosureScope
When evaluating an identifier `name` inside a closure, `ClosureScope.get(name)` resolves in this order:
## Legacy interpreter behavior (reference only)
The old runtime `Scope`-based resolution order (locals → captured → `this` → caller → globals) is obsolete for bytecode compilation. Keep it only for legacy interpreter paths and tooling that explicitly opts into it.
1. **Current frame locals and arguments**: Variables defined within the current closure execution.
2. **Captured lexical ancestry**: Outer local variables captured at the site where the closure was defined (the "lexical environment").
3. **Captured receiver members**: If the closure was defined within a class or explicitly bound to an object, it checks members of that object (`this`). This includes both instance fields/methods and class-level static members, following the MRO (C3) and respecting visibility rules (private members are only visible if the closure was defined in their class).
4. **Caller environment**: If not found lexically, it falls back to the calling context (e.g., the DSL's `this` or the caller's local variables).
5. **Global/Module fallbacks**: Final check for module-level constants and global functions.
This ensures that closures primarily interact with their defining environment (lexical capture) while still being able to participate in DSL-style calling contexts.
## Use raw‑chain helpers for ancestry walks
When authoring new scope types or advanced lookups, avoid calling virtual `get` while walking parents. Instead, use the non‑dispatch helpers on `Scope`:
- `chainLookupIgnoreClosure(name)`
- Walk raw `parent` chain and check only per‑frame locals/bindings/slots.
- Ignores overridden `get` (e.g., in `ClosureScope`). Cycle‑safe.
- `chainLookupWithMembers(name)`
- Like above, but after locals/bindings it also checks each frame’s `thisObj` members.
- Ignores overridden `get`. Cycle‑safe.
- `baseGetIgnoreClosure(name)`
- For the current frame only: check locals/bindings, then walk raw parents (locals/bindings), then fallback to this frame’s `thisObj` members.
These helpers avoid ping‑pong recursion and make structural cycles harmless (lookups terminate).
## Preventing structural cycles
- Don’t construct parent chains that can point back to a descendant.
- A debug‑time guard throws if assigning a parent would create a cycle; keep it enabled for development builds.
- Even with a cycle, chain helpers break out via a small `visited` set keyed by `frameId`.
## Capturing lexical environments for callbacks
For dynamic objects or custom builders, capture the creator’s lexical scope so callbacks can see outer locals/parameters:
1. Use `snapshotForClosure()` on the caller scope to capture locals/bindings/slots and parent.
2. Store this snapshot and run callbacks under `ClosureScope(callScope, captured)`.
Kotlin sketch:
```kotlin
val captured = scope.snapshotForClosure()
val execScope = ClosureScope(currentCallScope, captured)
callback.execute(execScope)
```
This ensures expressions like `contractName` used inside dynamic `get { name -> ... }` resolve to outer variables defined at the creation site.
## Closures in coroutines (launch/flow)
- The closure frame still prioritizes its own locals/args.
- Outer locals declared before suspension points remain visible through slot‑aware ancestry lookups.
- Global functions like `delay(ms)` and `yield()` are resolved via module/root fallbacks from within closures.
Tip: If a closure unexpectedly cannot see an outer local, check whether an intermediate runtime helper introduced an extra call frame; the built‑in lookup already traverses caller ancestry, so prefer the standard helpers rather than custom dispatch.
## Local variable references and missing symbols
- Unqualified identifier resolution first prefers locals/bindings/slots before falling back to `this` members.
- If neither locals nor members contain the symbol, missing field lookups map to `SymbolNotFound` (compatibility alias for `SymbolNotDefinedException`).
## Performance notes
- The `visited` sets used for cycle detection are tiny and short‑lived; in typical scripts the overhead is negligible.
- If profiling shows hotspots, consider limiting ancestry depth in your custom helpers or using small fixed arrays instead of hash sets—only for extremely hot code paths.
## Practical Example: `cached`
The `cached` function (defined in `lyng.stdlib`) is a classic example of using closures to maintain state. It wraps a builder into a zero-argument function that computes once and remembers the result:
```lyng
fun cached(builder) {
var calculated = false
var value = null
{ // This lambda captures `calculated`, `value`, and `builder`
if( !calculated ) {
value = builder()
calculated = true
}
value
}
}
```
Because Lyng now correctly isolates closures for each evaluation of a lambda literal, using `cached` inside a class instance works as expected: each instance maintains its own private `calculated` and `value` state, even if they share the same property declaration.
## Dos and Don’ts
- Do use `chainLookupIgnoreClosure` / `chainLookupWithMembers` for ancestry traversals.
- Do maintain the resolution order above for predictable behavior.
- Don’t call virtual `get` while walking parents; it risks recursion across scope types.
- Don’t attach instance scopes to transient/pool frames; bind to a stable parent scope instead.

View File

@ -17,7 +17,7 @@ It is as simple as:
assertEquals( text, Lynon.decode(encodedBits) )
// compression was used automatically
assert( text.length > (encodedBits.toBuffer() as Buffer).size )
assert( text.length > encodedBits.toBuffer().size )
>>> void
Any class you create is serializable by default; lynon serializes first constructor fields, then any `var` member fields.

View File

@ -14,7 +14,7 @@ __Other documents to read__ maybe after this one:
- [time](time.md) and [parallelism](parallelism.md)
- [parallelism] - multithreaded code, coroutines, etc.
- Some class
references: [List], [ImmutableList], [Set], [ImmutableSet], [Map], [ImmutableMap], [Real], [Range], [Iterable], [Iterator], [time manipulation](time.md), [Array], [RingBuffer], [Buffer].
references: [List], [Set], [Map], [Real], [Range], [Iterable], [Iterator], [time manipulation](time.md), [Array], [RingBuffer], [Buffer].
- Some samples: [combinatorics](samples/combinatorics.lyng.md), national vars and
loops: [сумма ряда](samples/сумма_ряда.lyng.md). More at [samples folder](samples)
@ -229,8 +229,9 @@ Naturally, assignment returns its value:
rvalue means you cant assign the result if the assignment
var x
// compile-time error: can't assign to rvalue
(x = 11) = 5
assertThrows { (x = 11) = 5 }
void
>>> void
This also prevents chain assignments so use parentheses:
@ -248,24 +249,18 @@ When the value is `null`, it might throws `NullReferenceException`, the name is
one can check it against null or use _null coalescing_. The null coalescing means, if the operand (left) is null,
the operation won't be performed and the result will be null. Here is the difference:
class Sample {
var field = 1
fun method() { 2 }
var list = [1, 2, 3]
}
val ref: Sample? = null
val list: List<Int>? = null
// direct access throws NullReferenceException:
// ref.field
// ref.method()
// ref.list[1]
// list[1]
val ref = null
assertThrows { ref.field }
assertThrows { ref.method() }
assertThrows { ref.array[1] }
assertThrows { ref[1] }
assertThrows { ref() }
assert( ref?.field == null )
assert( ref?.method() == null )
assert( ref?.list?[1] == null )
assert( list?[1] == null )
assert( ref?.array?[1] == null )
assert( ref?[1] == null )
assert( ref?() == null )
>>> void
Note: `?.` is still a typed operation. The receiver must have a compile-time type that declares the member; if the
@ -327,8 +322,8 @@ Much like let, but it does not alter returned value:
While it is not altering return value, the source object could be changed:
also
class Point(var x: Int, var y: Int)
val p: Point = Point(1,2).also { it.x++ }
class Point(x,y)
val p = Point(1,2).also { it.x++ }
assertEquals(p.x, 2)
>>> void
@ -336,9 +331,9 @@ also
It works much like `also`, but is executed in the context of the source object:
class Point(var x: Int, var y: Int)
class Point(x,y)
// see the difference: apply changes this to newly created Point:
val p = Point(1,2).apply { this@Point.x++; this@Point.y++ }
val p = Point(1,2).apply { x++; y++ }
assertEquals(p, Point(2,3))
>>> void
@ -346,7 +341,7 @@ It works much like `also`, but is executed in the context of the source object:
Sets `this` to the first argument and executes the block. Returns the value returned by the block:
class Point(var x: Int, var y: Int)
class Point(x,y)
val p = Point(1,2)
val sum = with(p) { x + y }
assertEquals(3, sum)
@ -502,18 +497,6 @@ Aliases expand to their underlying type expressions. See `docs/generics.md` for
`Null` is the class of `null`. It is a singleton type and mostly useful for type inference results.
For type expressions, you can check nullability directly:
T is nullable
T !is nullable
This is especially useful in generic code and in `when` over a type parameter:
fun describe<T>(x: T): String = when (T) {
nullable -> "nullable"
else -> "non-null"
}
## Type inference
The compiler infers types from:
@ -530,13 +513,6 @@ Examples:
fun inc(x=0) = x + 1 // (Int)->Int
fun maybe(flag) { if(flag) 1 else null } // ()->Int?
Function types are written as `(T1, T2, ...)->R`. You can include ellipsis in function *types* to
express a variadic position:
var fmt: (String, Object...)->String
var f: (Int, Object..., String)->Real
var anyArgs: (...)->Int // shorthand for (Object...)->Int
Untyped locals are allowed, but their type is fixed on the first assignment:
var x
@ -659,9 +635,8 @@ There are default parameters in Lyng:
It is possible to define also vararg using ellipsis:
fun sum(args...) {
val list = args as List
var result = list[0]
for( i in 1 ..< list.size ) result += list[i]
var result = args[0]
for( i in 1 ..< args.size ) result += args[i]
}
sum(10,20,30)
>>> 60
@ -754,11 +729,6 @@ one could be with ellipsis that means "the rest pf arguments as List":
assert( { a, b...-> [a,...b] }(100, 1, 2, 3) == [100, 1, 2, 3])
void
Type-annotated lambdas can use variadic *function types* as well:
val f: (Int, Object..., String)->Real = { a, rest..., b -> 0.0 }
val anyArgs: (...)->Int = { -> 0 }
### Using lambda as the parameter
See also: [Testing and Assertions](Testing.md)
@ -797,7 +767,6 @@ Lyng has built-in mutable array class `List` with simple literals:
[List] is an implementation of the type `Array`, and through it `Collection` and [Iterable]. Please read [Iterable],
many collection based methods are implemented there.
For immutable list values, use `list.toImmutable()` and [ImmutableList].
Lists can contain any type of objects, lists too:
@ -806,7 +775,7 @@ Lists can contain any type of objects, lists too:
assert( list is Array ) // general interface
assert(list.size == 3)
// second element is a list too:
assert((list[1] as List).size == 2)
assert(list[1].size == 2)
>>> void
Notice usage of indexing. You can use negative indexes to offset from the end of the list; see more in [Lists](List.md).
@ -980,7 +949,6 @@ Set are unordered collection of unique elements, see [Set]. Sets are [Iterable]
>>> void
Please see [Set] for detailed description.
For immutable set values, use `set.toImmutable()` and [ImmutableSet].
# Maps
@ -1041,7 +1009,6 @@ Notes:
- When you need computed (expression) keys or non-string keys, use `Map(...)` constructor with entries, e.g. `Map( ("a" + "b") => 1 )`, then merge with a literal if needed: `{ base: } + (computedKey => 42)`.
Please see the [Map] reference for a deeper guide.
For immutable map values, use `map.toImmutable()` and [ImmutableMap].
# Flow control operators
@ -1256,8 +1223,8 @@ ends normally, without breaks. It allows override loop result value, for example
to not calculate it in every iteration. For example, consider this naive prime number
test function (remember function return it's last expression result):
fun naive_is_prime(candidate: Int) {
val x = candidate
fun naive_is_prime(candidate) {
val x = if( candidate !is Int) candidate.toInt() else candidate
var divisor = 1
while( ++divisor < x/2 || divisor == 2 ) {
if( x % divisor == 0 ) break false
@ -1332,9 +1299,8 @@ For loop are intended to traverse collections, and all other objects that suppor
size and index access, like lists:
var letters = 0
val words: List<String> = ["hello", "world"]
for( w in words) {
letters += (w as String).length
for( w in ["hello", "wolrd"]) {
letters += w.length
}
"total letters: "+letters
>>> "total letters: 10"
@ -1555,21 +1521,18 @@ The type for the character objects is `Char`.
| \t | 0x07, tabulation |
| \\ | \ slash character |
| \" | " double quote |
| \uXXXX | unicode code point |
Unicode escape form is exactly 4 hex digits, e.g. `"\u263A"` -> `☺`.
Other `\c` combinations, where c is any char except mentioned above, are left intact, e.g.:
val s = "\a"
assert(s[0] == '\\')
assert(s[0] == '\')
assert(s[1] == 'a')
>>> void
same as:
val s = "\\a"
assert(s[0] == '\\')
assert(s[0] == '\')
assert(s[1] == 'a')
>>> void
@ -1584,9 +1547,6 @@ Are the same as in string literals with little difference:
| \t | 0x07, tabulation |
| \\ | \ slash character |
| \' | ' apostrophe |
| \uXXXX | unicode code point |
For char literals, use `'\\'` to represent a single backslash character; `'\'` is invalid.
### Char instance members
@ -1664,13 +1624,13 @@ Concatenation is a `+`: `"hello " + name` works as expected. No confusion. There
Extraction:
("abcd42def"[ "\d+".re ] as RegexMatch).value
"abcd42def"[ "\d+".re ].value
>>> "42"
Part match:
assert( "abc foo def" =~ "f[oO]+".re )
assert( "foo" == ($~ as RegexMatch).value )
assert( "foo" == $~.value )
>>> void
Repeating the fragment:
@ -1771,7 +1731,6 @@ Lambda avoid unnecessary execution if assertion is not failed. for example:
| π | See [math](math.md) |
[List]: List.md
[ImmutableList]: ImmutableList.md
[Testing]: Testing.md
@ -1788,10 +1747,8 @@ Lambda avoid unnecessary execution if assertion is not failed. for example:
[string formatting]: https://github.com/sergeych/mp_stools?tab=readme-ov-file#sprintf-syntax-summary
[Set]: Set.md
[ImmutableSet]: ImmutableSet.md
[Map]: Map.md
[ImmutableMap]: ImmutableMap.md
[Buffer]: Buffer.md
@ -1924,7 +1881,7 @@ You can add new methods and properties to existing classes without modifying the
### Extension properties
val Int.isEven get() = this % 2 == 0
val Int.isEven = this % 2 == 0
4.isEven
>>> true

View File

@ -248,7 +248,6 @@ The `Obj.getLyngExceptionMessageWithStackTrace()` extension method has been adde
Lyng now provides a public Kotlin reflection bridge and a Lyng‑first class binding workflow. This is the **preferred** way to write Kotlin extensions and library integrations:
- **Bridge resolver**: explicit handles for values, vars, and callables with predictable lookup rules.
- **Class bridge binding**: declare extern surfaces in Lyng (`extern` members, or members inside `extern class/object`) and bind the implementations in Kotlin before the first instance is created.
- **Extern declaration rule**: `extern class` / `extern object` are declaration-only; all members in their bodies are implicitly extern.
- **Class bridge binding**: declare classes/members in Lyng (marked `extern`) and bind the implementations in Kotlin before the first instance is created.
See **Embedding Lyng** for full samples and usage details.

View File

@ -18,16 +18,11 @@ In particular, it means no slow and flaky runtime lookups. Once compiled, code g
The API is fixed and will be kept with further Lyng core changes. It is now the recommended way to write Lyng extensions in Kotlin. It is much simpler and more elegant than the internal one. See [Kotlin Bridge Binding](../notes/kotlin_bridge_binding.md).
Extern declaration clarification:
- `extern class` / `extern object` are pure extern surfaces.
- Members inside them are implicitly extern (`extern` on a member is optional/redundant).
- Lyng method/property bodies for these declarations should be implemented as extensions instead.
### Smart types system
- **Deep inference**: The compiler analyzes types of symbols along the execution path and in many cases eliminates unnecessary casts or type specifications.
- **Union and intersection types**: `A & B`, `A | B`.
- **Generics**: Generic types are first-class citizens with support for [bounds and variance](generics.md). Type params are erased by default and are reified only when needed (e.g., `T::class`, `T is ...`, `as T`, or in extern-facing APIs), which enables checks like `A in T` when `T` is reified.
- **Generics**: Generic types are first-class citizens with support for [bounds and variance](generics.md). No type erasure: in a generic function you can, for example, check `A in T`, where T is the generic type.
- **Inner classes and enums**: Full support for nested declarations, including [Enums with lifting](OOP.md#lifted-enum-entries).
## Other highlights

View File

@ -1,814 +0,0 @@
#!/usr/bin/env lyng
/*
* Lyng Console Tetris (interactive sample)
*
* Controls:
* - Left/Right arrows or A/D: move
* - Up arrow or W: rotate
* - Down arrow or S: soft drop
* - Space: hard drop
* - P or Escape: pause
* - Q: quit
Tsted to score:
sergeych@sergeych-XPS-17-9720:~$ ~/dev/lyng/examples/tetris_console.lyng
Bye.
Score: 435480
Lines: 271
Level: 28
Ssergeych@sergeych-XPS-17-9720:~$
*/
import lyng.io.console
import lyng.io.fs
val MIN_COLS = 56
val MIN_ROWS = 24
val PANEL_WIDTH = 24
val BOARD_MARGIN_ROWS = 5
val BOARD_MIN_W = 10
val BOARD_MAX_W = 16
val BOARD_MIN_H = 16
val BOARD_MAX_H = 28
val LEVEL_LINES_STEP = 10
val DROP_FRAMES_BASE = 15
val DROP_FRAMES_MIN = 3
val FRAME_DELAY_MS = 35
val RESIZE_WAIT_MS = 250
val MAX_PENDING_INPUTS = 64
val ROTATION_KICKS = [0, -1, 1, -2, 2]
val ANSI_ESC = "\u001b["
val ANSI_RESET = ANSI_ESC + "0m"
val ERROR_LOG_PATH = "/tmp/lyng_tetris_errors.log"
val UNICODE_BLOCK = "██"
val UNICODE_TOP_LEFT = "┌"
val UNICODE_TOP_RIGHT = "┐"
val UNICODE_BOTTOM_LEFT = "└"
val UNICODE_BOTTOM_RIGHT = "┘"
val UNICODE_HORIZONTAL = "──"
val UNICODE_VERTICAL = "│"
val UNICODE_DOT = "· "
type Cell = List<Int>
type Rotation = List<Cell>
type Rotations = List<Rotation>
type Row = List<Int>
type Board = List<Row>
class Piece(val name: String, val rotations: Rotations) {}
class RotateResult(val ok: Bool, val rot: Int, val px: Int) {}
class GameState(
pieceId0: Int,
nextId0: Int,
next2Id0: Int,
px0: Int,
py0: Int,
) {
var pieceId = pieceId0
var nextId = nextId0
var next2Id = next2Id0
var rot = 0
var px = px0
var py = py0
var score = 0
var totalLines = 0
var level = 1
var running = true
var gameOver = false
var paused = false
}
class LoopFrame(val resized: Bool, val originRow: Int, val originCol: Int) {}
fun clearAndHome() {
Console.clear()
Console.home()
}
fun logError(message: String, err: Object?): Void {
try {
var details = ""
if (err != null) {
try {
details = ": " + err
} catch (_: Object) {
details = ": <error-format-failed>"
}
}
Path(ERROR_LOG_PATH).appendUtf8(message + details + "\n")
} catch (_: Object) {
// Never let logging errors affect gameplay.
}
}
fun repeatText(s: String, n: Int): String {
var out: String = ""
for (i in 0..<n) {
out += s
}
out
}
fun max<T>(a: T, b: T): T = if (a > b) a else b
fun emptyRow(width: Int): Row {
val r: Row = []
for (x in 0..<width) {
r.add(0)
}
r
}
fun createBoard(width: Int, height: Int): Board {
val b: Board = []
for (y in 0..<height) {
b.add(emptyRow(width))
}
b
}
fun colorize(text: String, sgr: String, useColor: Bool): String {
if (!useColor) return text
ANSI_ESC + sgr + "m" + text + ANSI_RESET
}
fun blockText(pieceId: Int, useColor: Bool): String {
if (pieceId <= 0) return " "
val sgr = when (pieceId) {
1 -> "36" // I
2 -> "33" // O
3 -> "35" // T
4 -> "32" // S
5 -> "31" // Z
6 -> "34" // J
7 -> "93" // L
else -> "37"
}
colorize(UNICODE_BLOCK, sgr, useColor)
}
fun emptyCellText(useColor: Bool): String {
colorize(UNICODE_DOT, "90", useColor)
}
fun canPlace(board: Board, boardW: Int, boardH: Int, pieceId: Int, rot: Int, px: Int, py: Int): Bool {
try {
if (pieceId < 1 || pieceId > 7) return false
val piece: Piece = PIECES[pieceId - 1]
if (rot < 0 || rot >= piece.rotations.size) return false
val cells = piece.rotations[rot]
for (cell in cells) {
val x = px + cell[0]
val y = py + cell[1]
if (x < 0 || x >= boardW) return false
if (y >= boardH) return false
if (y >= 0) {
if (y >= board.size) return false
val row = board[y]
if (row == null) return false
if (row[x] != 0) return false
}
}
true
} catch (_: Object) {
false
}
}
fun lockPiece(board: Board, pieceId: Int, rot: Int, px: Int, py: Int): Void {
val piece: Piece = PIECES[pieceId - 1]
val cells = piece.rotations[rot]
for (cell in cells) {
val x = px + cell[0]
val y = py + cell[1]
if (y >= 0 && y < board.size) {
val row = board[y]
if (row != null) {
row[x] = pieceId
}
}
}
}
fun clearCompletedLines(board: Board, boardW: Int, boardH: Int): Int {
val b = board
var y = boardH - 1
var cleared = 0
while (y >= 0) {
if (y >= b.size) {
y--
continue
}
val row = b[y]
if (row == null) {
b.removeAt(y)
b.insertAt(0, emptyRow(boardW))
cleared++
continue
}
var full = true
for (x in 0..<boardW) {
if (row[x] == 0) {
full = false
break
}
}
if (full) {
b.removeAt(y)
b.insertAt(0, emptyRow(boardW))
cleared++
} else {
y--
}
}
cleared
}
fun activeCellId(pieceId: Int, rot: Int, px: Int, py: Int, x: Int, y: Int): Int {
val piece: Piece = PIECES[pieceId - 1]
val cells = piece.rotations[rot]
for (cell in cells) {
val ax = px + cell[0]
val ay = py + cell[1]
if (ax == x && ay == y) return pieceId
}
0
}
fun tryRotateCw(board: Board, boardW: Int, boardH: Int, pieceId: Int, rot: Int, px: Int, py: Int): RotateResult {
val piece: Piece = PIECES[pieceId - 1]
val rotations = piece.rotations.size
val nr = (rot + 1) % rotations
for (kx in ROTATION_KICKS) {
val nx = px + kx
if (canPlace(board, boardW, boardH, pieceId, nr, nx, py) == true) {
return RotateResult(true, nr, nx)
}
}
RotateResult(false, rot, px)
}
fun nextPreviewLines(pieceId: Int, useColor: Bool): List<String> {
val out: List<String> = []
if (pieceId <= 0) {
for (i in 0..<4) {
out.add(" ")
}
return out
}
val piece: Piece = PIECES[pieceId - 1]
val cells = piece.rotations[0]
for (y in 0..<4) {
var line = ""
for (x in 0..<4) {
var filled = false
for (cell in cells) {
if (cell[0] == x && cell[1] == y) {
filled = true
break
}
}
line += if (filled) blockText(pieceId, useColor) else " "
}
out.add(line)
}
out
}
fun render(
state: GameState,
board: Board,
boardW: Int,
boardH: Int,
prevFrameLines: List<String>,
originRow: Int,
originCol: Int,
useColor: Bool,
): List<String> {
val bottomBorder = UNICODE_BOTTOM_LEFT + repeatText(UNICODE_HORIZONTAL, boardW) + UNICODE_BOTTOM_RIGHT
val panel: List<String> = []
val nextPiece: Piece = PIECES[state.nextId - 1]
val next2Piece: Piece = PIECES[state.next2Id - 1]
val nextName = nextPiece.name
val next2Name = next2Piece.name
val preview = nextPreviewLines(state.nextId, useColor)
panel.add("Lyng Tetris")
panel.add("")
panel.add("Score: " + state.score)
panel.add("Lines: " + state.totalLines)
panel.add("Level: " + state.level)
panel.add("")
panel.add("Next: " + nextName)
panel.add("")
for (pl in preview) panel.add(pl)
panel.add("After: " + next2Name)
panel.add("")
panel.add("Keys:")
panel.add("A/D or arrows")
panel.add("W/Up: rotate")
panel.add("S/Down: drop")
panel.add("Space: hard drop")
panel.add("P/Esc: pause")
panel.add("Q: quit")
val frameLines: List<String> = []
for (y in 0..<boardH) {
var line = UNICODE_VERTICAL
for (x in 0..<boardW) {
val a = activeCellId(state.pieceId, state.rot, state.px, state.py, x, y)
val row = if (y < board.size) board[y] else null
val b = if (row == null) 0 else row[x]
val id = if (a > 0) a else b
line += if (id > 0) blockText(id, useColor) else emptyCellText(useColor)
}
line += UNICODE_VERTICAL
if (y < panel.size) {
line += " " + panel[y]
}
frameLines.add(line)
}
frameLines.add(bottomBorder)
for (i in 0..<frameLines.size) {
val line = frameLines[i]
val old = if (i < prevFrameLines.size) prevFrameLines[i] else null
if (old != line) {
Console.moveTo(originRow + i, originCol)
Console.clearLine()
Console.write(line)
}
}
frameLines
}
fun fitLine(line: String, width: Int): String {
val maxLen = if (width > 0) width else 0
if (maxLen <= 0) return ""
if (line.size >= maxLen) return line[..<maxLen]
line + repeatText(" ", maxLen - line.size)
}
fun renderPauseOverlay(
originRow: Int,
originCol: Int,
boardW: Int,
boardH: Int,
): Void {
val contentWidth = boardW * 2 + 2 + 3 + PANEL_WIDTH
val contentHeight = boardH + 1
val lines: List<String> = []
lines.add("PAUSED")
lines.add("")
lines.add("Any key: continue game")
lines.add("Esc: exit game")
lines.add("")
lines.add("Move: A/D or arrows")
lines.add("Rotate: W or Up")
lines.add("Drop: S/Down, Space hard drop")
var innerWidth = 0
for (line in lines) {
if (line.size > innerWidth) innerWidth = line.size
}
innerWidth += 4
val maxInner = max(12, contentWidth - 2)
if (innerWidth > maxInner) innerWidth = maxInner
if (innerWidth % 2 != 0) innerWidth--
val boxWidth = innerWidth + 2
val boxHeight = lines.size + 2
val left = originCol + max(0, (contentWidth - boxWidth) / 2)
val top = originRow + max(0, (contentHeight - boxHeight) / 2)
val topBorder = UNICODE_TOP_LEFT + repeatText(UNICODE_HORIZONTAL, innerWidth / 2) + UNICODE_TOP_RIGHT
val bottomBorder = UNICODE_BOTTOM_LEFT + repeatText(UNICODE_HORIZONTAL, innerWidth / 2) + UNICODE_BOTTOM_RIGHT
Console.moveTo(top, left)
Console.write(topBorder)
for (i in 0..<lines.size) {
Console.moveTo(top + 1 + i, left)
Console.write(UNICODE_VERTICAL + fitLine(" " + lines[i], innerWidth) + UNICODE_VERTICAL)
}
Console.moveTo(top + boxHeight - 1, left)
Console.write(bottomBorder)
}
fun waitForMinimumSize(minCols: Int, minRows: Int): Object {
while (true) {
val g = Console.geometry()
val cols = g?.columns ?: 0
val rows = g?.rows ?: 0
if (cols >= minCols && rows >= minRows) return g
clearAndHome()
val lines: List<String> = []
lines.add("Lyng Tetris needs at least %sx%s terminal size."(minCols, minRows))
lines.add("Current: %sx%s"(cols, rows))
lines.add("Resize the console window to continue.")
val visibleLines = if (rows < lines.size) rows else lines.size
if (visibleLines > 0) {
val startRow = max(1, ((rows - visibleLines) / 2) + 1)
for (i in 0..<visibleLines) {
val line = lines[i]
val startCol = max(1, ((cols - line.size) / 2) + 1)
Console.moveTo(startRow + i, startCol)
Console.clearLine()
Console.write(line)
}
Console.flush()
}
delay(RESIZE_WAIT_MS)
}
}
fun scoreForLines(cleared: Int, level: Int): Int {
when (cleared) {
1 -> 100 * level
2 -> 300 * level
3 -> 500 * level
4 -> 800 * level
else -> 0
}
}
// Classic 7 tetrominoes, minimal rotations per piece.
fun cell(x: Int, y: Int): Cell { [x, y] }
fun rot(a: Cell, b: Cell, c: Cell, d: Cell): Rotation {
val r: Rotation = []
r.add(a)
r.add(b)
r.add(c)
r.add(d)
r
}
val PIECES: List<Piece> = []
val iRots: Rotations = []
iRots.add(rot(cell(0,1), cell(1,1), cell(2,1), cell(3,1)))
iRots.add(rot(cell(2,0), cell(2,1), cell(2,2), cell(2,3)))
PIECES.add(Piece("I", iRots))
val oRots: Rotations = []
oRots.add(rot(cell(1,0), cell(2,0), cell(1,1), cell(2,1)))
PIECES.add(Piece("O", oRots))
val tRots: Rotations = []
tRots.add(rot(cell(1,0), cell(0,1), cell(1,1), cell(2,1)))
tRots.add(rot(cell(1,0), cell(1,1), cell(2,1), cell(1,2)))
tRots.add(rot(cell(0,1), cell(1,1), cell(2,1), cell(1,2)))
tRots.add(rot(cell(1,0), cell(0,1), cell(1,1), cell(1,2)))
PIECES.add(Piece("T", tRots))
val sRots: Rotations = []
sRots.add(rot(cell(1,0), cell(2,0), cell(0,1), cell(1,1)))
sRots.add(rot(cell(1,0), cell(1,1), cell(2,1), cell(2,2)))
PIECES.add(Piece("S", sRots))
val zRots: Rotations = []
zRots.add(rot(cell(0,0), cell(1,0), cell(1,1), cell(2,1)))
zRots.add(rot(cell(2,0), cell(1,1), cell(2,1), cell(1,2)))
PIECES.add(Piece("Z", zRots))
val jRots: Rotations = []
jRots.add(rot(cell(0,0), cell(0,1), cell(1,1), cell(2,1)))
jRots.add(rot(cell(1,0), cell(2,0), cell(1,1), cell(1,2)))
jRots.add(rot(cell(0,1), cell(1,1), cell(2,1), cell(2,2)))
jRots.add(rot(cell(1,0), cell(1,1), cell(0,2), cell(1,2)))
PIECES.add(Piece("J", jRots))
val lRots: Rotations = []
lRots.add(rot(cell(2,0), cell(0,1), cell(1,1), cell(2,1)))
lRots.add(rot(cell(1,0), cell(1,1), cell(1,2), cell(2,2)))
lRots.add(rot(cell(0,1), cell(1,1), cell(2,1), cell(0,2)))
lRots.add(rot(cell(0,0), cell(1,0), cell(1,1), cell(1,2)))
PIECES.add(Piece("L", lRots))
if (!Console.isSupported()) {
println("Console API is not supported in this runtime.")
void
} else if (!Console.isTty()) {
println("This sample needs an interactive terminal (TTY).")
void
} else {
waitForMinimumSize(MIN_COLS, MIN_ROWS)
val g0 = Console.geometry()
val cols = g0?.columns ?: MIN_COLS
val rows = g0?.rows ?: MIN_ROWS
val boardW = clamp((cols - PANEL_WIDTH) / 2, BOARD_MIN_W..BOARD_MAX_W)
val boardH = clamp(rows - BOARD_MARGIN_ROWS, BOARD_MIN_H..BOARD_MAX_H)
val board: Board = createBoard(boardW, boardH)
fun nextPieceId() {
Random.next(1..7)
}
val state: GameState = GameState(
nextPieceId(),
nextPieceId(),
nextPieceId(),
(boardW / 2) - 2,
-1,
)
var prevFrameLines: List<String> = []
val gameMutex: Mutex = Mutex()
var forceRedraw = false
val pendingInputs: List<String> = []
val rawModeEnabled = Console.setRawMode(true)
if (!rawModeEnabled) {
println("Raw keyboard mode is not available in this terminal/runtime.")
println("Use jlyng in an interactive terminal with raw input support.")
void
} else {
val useColor = Console.ansiLevel() != ConsoleAnsiLevel.NONE
Console.enterAltScreen()
Console.setCursorVisible(false)
clearAndHome()
fun resetActivePiece(s: GameState): Void {
s.pieceId = nextPieceId()
s.rot = 0
s.px = (boardW / 2) - 2
s.py = -1
}
fun applyKeyInput(s: GameState, key: String): Void {
try {
if (key == "__CTRL_C__") {
s.running = false
}
else if (s.paused) {
if (key == "Escape") {
s.running = false
} else {
s.paused = false
forceRedraw = true
}
}
else if (key == "p" || key == "P" || key == "Escape") {
s.paused = true
forceRedraw = true
}
else if (key == "q" || key == "Q") {
s.running = false
}
else if (key == "ArrowLeft" || key == "a" || key == "A") {
if (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px - 1, s.py) == true) s.px--
}
else if (key == "ArrowRight" || key == "d" || key == "D") {
if (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px + 1, s.py) == true) s.px++
}
else if (key == "ArrowUp" || key == "w" || key == "W") {
val rr: RotateResult = tryRotateCw(board, boardW, boardH, s.pieceId, s.rot, s.px, s.py)
if (rr.ok) {
s.rot = rr.rot
s.px = rr.px
}
}
else if (key == "ArrowDown" || key == "s" || key == "S") {
if (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px, s.py + 1) == true) {
s.py++
s.score++
}
}
else if (key == " ") {
while (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px, s.py + 1) == true) {
s.py++
s.score += 2
}
}
} catch (inputErr: Object) {
logError("applyKeyInput recovered after error", inputErr)
resetActivePiece(s)
}
}
var inputRunning = true
launch {
while (inputRunning) {
try {
for (ev in Console.events()) {
if (!inputRunning) break
// Isolate per-event failures so one bad event does not unwind the stream.
try {
if (ev is ConsoleKeyEvent) {
val ke = ev as ConsoleKeyEvent
if (ke.type == ConsoleEventType.KEY_DOWN) {
var key = ""
var ctrl = false
try {
key = ke.key
} catch (keyErr: Object) {
logError("Input key read error", keyErr)
}
try {
ctrl = ke.ctrl == true
} catch (_: Object) {
ctrl = false
}
if (key == "") {
logError("Dropped key event with empty/null key", null)
continue
}
val mapped = if (ctrl && (key == "c" || key == "C")) "__CTRL_C__" else key
val mm: Mutex = gameMutex
mm.withLock {
if (pendingInputs.size >= MAX_PENDING_INPUTS) {
pendingInputs.removeAt(0)
}
pendingInputs.add(mapped)
}
}
}
} catch (eventErr: Object) {
// Keep the input stream alive; report for diagnostics.
logError("Input event error", eventErr)
}
}
} catch (err: Object) {
// Recover stream-level failures by recreating event stream in next loop turn.
if (!inputRunning) break
logError("Input stream recovered after error", err)
Console.setRawMode(true)
delay(50)
}
}
}
fun pollLoopFrame(): LoopFrame? {
val g = Console.geometry()
val c = g?.columns ?: 0
val r = g?.rows ?: 0
if (c < MIN_COLS || r < MIN_ROWS) {
waitForMinimumSize(MIN_COLS, MIN_ROWS)
clearAndHome()
prevFrameLines = []
return null
}
val contentCols = boardW * 2 + 2 + 3 + PANEL_WIDTH
val contentRows = boardH + 1
val requiredCols = max(MIN_COLS, contentCols)
val requiredRows = max(MIN_ROWS, contentRows)
if (c < requiredCols || r < requiredRows) {
waitForMinimumSize(requiredCols, requiredRows)
clearAndHome()
prevFrameLines = []
return null
}
val originCol = max(1, ((c - contentCols) / 2) + 1)
val originRow = max(1, ((r - contentRows) / 2) + 1)
LoopFrame(false, originRow, originCol)
}
fun advanceGravity(s: GameState, frame: Int): Int {
s.level = 1 + (s.totalLines / LEVEL_LINES_STEP)
val dropEvery = max(DROP_FRAMES_MIN, DROP_FRAMES_BASE - s.level)
var nextFrame = frame + 1
if (nextFrame < dropEvery) return nextFrame
nextFrame = 0
if (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px, s.py + 1) == true) {
s.py++
return nextFrame
}
lockPiece(board, s.pieceId, s.rot, s.px, s.py)
val cleared = clearCompletedLines(board, boardW, boardH)
if (cleared > 0) {
s.totalLines += cleared
s.score += scoreForLines(cleared, s.level)
}
s.pieceId = s.nextId
s.nextId = s.next2Id
s.next2Id = nextPieceId()
s.rot = 0
s.px = (boardW / 2) - 2
s.py = -1
if (!canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px, s.py)) {
s.gameOver = true
}
nextFrame
}
try {
if (!canPlace(board, boardW, boardH, state.pieceId, state.rot, state.px, state.py)) {
state.gameOver = true
}
var frame = 0
var shouldStop = false
var prevOriginRow = -1
var prevOriginCol = -1
var prevPaused = false
while (!shouldStop) {
val frameData = pollLoopFrame()
if (frameData == null) {
frame = 0
prevPaused = false
continue
}
val mm: Mutex = gameMutex
mm.withLock {
if (pendingInputs.size > 0) {
val toApply: List<String> = []
while (pendingInputs.size > 0) {
val k = pendingInputs[0]
pendingInputs.removeAt(0)
toApply.add(k)
}
for (k in toApply) {
applyKeyInput(state, k)
if (!state.running || state.gameOver) break
}
}
}
if (!state.running || state.gameOver) {
shouldStop = true
} else {
val localForceRedraw = forceRedraw
forceRedraw = false
val movedOrigin = frameData.originRow != prevOriginRow || frameData.originCol != prevOriginCol
if (frameData.resized || movedOrigin || localForceRedraw) {
clearAndHome()
prevFrameLines = []
}
prevOriginRow = frameData.originRow
prevOriginCol = frameData.originCol
if (!state.paused) {
frame = advanceGravity(state, frame)
}
prevFrameLines = render(
state,
board,
boardW,
boardH,
prevFrameLines,
frameData.originRow,
frameData.originCol,
useColor
)
if (state.paused && (!prevPaused || frameData.resized || movedOrigin)) {
renderPauseOverlay(frameData.originRow, frameData.originCol, boardW, boardH)
}
prevPaused = state.paused
}
Console.flush()
delay(FRAME_DELAY_MS)
}
} finally {
inputRunning = false
Console.setRawMode(false)
Console.setCursorVisible(true)
Console.leaveAltScreen()
Console.flush()
}
if (state.gameOver) {
println("Game over.")
} else {
println("Bye.")
}
println("Score: %s"(state.score))
println("Lines: %s"(state.totalLines))
println("Level: %s"(state.level))
}
}

View File

@ -37,6 +37,4 @@ kotlin.native.cacheKind.linuxX64=none
#org.gradle.java.home=/home/sergeych/.jdks/corretto-21.0.9
android.experimental.lint.migrateToK2=false
android.lint.useK2Uast=false
kotlin.mpp.applyDefaultHierarchyTemplate=true
org.gradle.parallel=true
kotlin.mpp.applyDefaultHierarchyTemplate=true

View File

@ -1,7 +1,6 @@
[versions]
agp = "8.5.2"
clikt = "5.0.3"
mordant = "3.0.2"
kotlin = "2.3.0"
android-minSdk = "24"
android-compileSdk = "34"
@ -15,8 +14,6 @@ compiler = "3.2.0-alpha11"
[libraries]
clikt = { module = "com.github.ajalt.clikt:clikt", version.ref = "clikt" }
clikt-markdown = { module = "com.github.ajalt.clikt:clikt-markdown", version.ref = "clikt" }
mordant-core = { module = "com.github.ajalt.mordant:mordant-core", version.ref = "mordant" }
mordant-jvm-jna = { module = "com.github.ajalt.mordant:mordant-jvm-jna", version.ref = "mordant" }
kotlin-test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }
kotlinx-coroutines-test = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-test", version.ref = "kotlinx-coroutines" }
kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "kotlinx-coroutines" }
@ -31,4 +28,4 @@ compiler = { group = "androidx.databinding", name = "compiler", version.ref = "c
[plugins]
androidLibrary = { id = "com.android.library", version.ref = "agp" }
kotlinMultiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }
vanniktech-mavenPublish = { id = "com.vanniktech.maven.publish", version = "0.29.0" }
vanniktech-mavenPublish = { id = "com.vanniktech.maven.publish", version = "0.29.0" }

View File

@ -35,7 +35,13 @@ import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.SupervisorJob
import kotlinx.coroutines.launch
import net.sergeych.lyng.ExecutionError
import net.sergeych.lyng.Script
import net.sergeych.lyng.Source
import net.sergeych.lyng.requireScope
import net.sergeych.lyng.idea.LyngIcons
import net.sergeych.lyng.obj.ObjVoid
import net.sergeych.lyng.obj.getLyngExceptionMessageWithStackTrace
class RunLyngScriptAction : AnAction(LyngIcons.FILE) {
private val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())
@ -53,9 +59,7 @@ class RunLyngScriptAction : AnAction(LyngIcons.FILE) {
val isLyng = psiFile?.name?.endsWith(".lyng") == true
e.presentation.isEnabledAndVisible = isLyng
if (isLyng) {
e.presentation.isEnabled = false
e.presentation.text = "Run '${psiFile.name}' (disabled)"
e.presentation.description = "Running scripts from the IDE is disabled; use the CLI."
e.presentation.text = "Run '${psiFile.name}'"
} else {
e.presentation.text = "Run Lyng Script"
}
@ -64,6 +68,7 @@ class RunLyngScriptAction : AnAction(LyngIcons.FILE) {
override fun actionPerformed(e: AnActionEvent) {
val project = e.project ?: return
val psiFile = getPsiFile(e) ?: return
val text = psiFile.text
val fileName = psiFile.name
val (console, toolWindow) = getConsoleAndToolWindow(project)
@ -71,9 +76,40 @@ class RunLyngScriptAction : AnAction(LyngIcons.FILE) {
toolWindow.show {
scope.launch {
console.print("--- Run is disabled ---\n", ConsoleViewContentType.SYSTEM_OUTPUT)
console.print("Lyng now runs in bytecode-only mode; the IDE no longer evaluates scripts.\n", ConsoleViewContentType.NORMAL_OUTPUT)
console.print("Use the CLI to run scripts, e.g. `lyng run $fileName`.\n", ConsoleViewContentType.NORMAL_OUTPUT)
try {
val lyngScope = Script.newScope()
lyngScope.addFn("print") {
val sb = StringBuilder()
for ((i, arg) in args.list.withIndex()) {
if (i > 0) sb.append(" ")
sb.append(arg.toString(requireScope()).value)
}
console.print(sb.toString(), ConsoleViewContentType.NORMAL_OUTPUT)
ObjVoid
}
lyngScope.addFn("println") {
val sb = StringBuilder()
for ((i, arg) in args.list.withIndex()) {
if (i > 0) sb.append(" ")
sb.append(arg.toString(requireScope()).value)
}
console.print(sb.toString() + "\n", ConsoleViewContentType.NORMAL_OUTPUT)
ObjVoid
}
console.print("--- Running $fileName ---\n", ConsoleViewContentType.SYSTEM_OUTPUT)
val result = lyngScope.eval(Source(fileName, text))
console.print("\n--- Finished with result: ${result.inspect(lyngScope)} ---\n", ConsoleViewContentType.SYSTEM_OUTPUT)
} catch (t: Throwable) {
console.print("\n--- Error ---\n", ConsoleViewContentType.ERROR_OUTPUT)
if( t is ExecutionError ) {
val m = t.errorObject.getLyngExceptionMessageWithStackTrace()
console.print(m, ConsoleViewContentType.ERROR_OUTPUT)
}
else
console.print(t.message ?: t.toString(), ConsoleViewContentType.ERROR_OUTPUT)
console.print("\n", ConsoleViewContentType.ERROR_OUTPUT)
}
}
}
}

View File

@ -88,11 +88,9 @@ class LyngExternalAnnotator : ExternalAnnotator<LyngExternalAnnotator.Input, Lyn
// Imports: each segment as namespace/path
mini?.imports?.forEach { imp ->
imp.segments.forEach { seg ->
if (seg.range.start.source === analysis.source && seg.range.end.source === analysis.source) {
val start = analysis.source.offsetOf(seg.range.start)
val end = analysis.source.offsetOf(seg.range.end)
putRange(start, end, LyngHighlighterColors.NAMESPACE)
}
val start = analysis.source.offsetOf(seg.range.start)
val end = analysis.source.offsetOf(seg.range.end)
putRange(start, end, LyngHighlighterColors.NAMESPACE)
}
}

View File

@ -24,7 +24,6 @@ import com.intellij.openapi.editor.Editor
import com.intellij.openapi.util.TextRange
import com.intellij.psi.PsiElement
import com.intellij.psi.PsiFile
import kotlinx.coroutines.runBlocking
import net.sergeych.lyng.highlight.offsetOf
import net.sergeych.lyng.idea.LyngLanguage
import net.sergeych.lyng.idea.util.LyngAstManager
@ -76,51 +75,7 @@ class LyngDocumentationProvider : AbstractDocumentationProvider() {
// Single-source quick doc lookup
LyngLanguageTools.docAt(analysis, offset)?.let { info ->
val enriched = if (info.doc == null) {
findDocInDeclarationFiles(file, info.target.containerName, info.target.name)
?.let { info.copy(doc = it) } ?: info
} else {
info
}
renderDocFromInfo(enriched)?.let { return it }
}
// Fallback: resolve references against merged MiniAst (including .lyng.d) when binder cannot
run {
val dotPos = DocLookupUtils.findDotLeft(text, idRange.startOffset)
if (dotPos != null) {
val receiverClass = DocLookupUtils.guessReceiverClassViaMini(mini, text, dotPos, imported, analysis.binding)
?: DocLookupUtils.guessReceiverClass(text, dotPos, imported, mini)
if (receiverClass != null) {
val resolved = DocLookupUtils.resolveMemberWithInheritance(imported, receiverClass, ident, mini)
if (resolved != null) {
val owner = resolved.first
val member = resolved.second
val withDoc = if (member.doc == null) {
findDocInDeclarationFiles(file, owner, member.name)?.let { doc ->
when (member) {
is MiniMemberFunDecl -> member.copy(doc = doc)
is MiniMemberValDecl -> member.copy(doc = doc)
is MiniMemberTypeAliasDecl -> member.copy(doc = doc)
else -> member
}
} ?: member
} else {
member
}
return when (withDoc) {
is MiniMemberFunDecl -> renderMemberFunDoc(owner, withDoc)
is MiniMemberValDecl -> renderMemberValDoc(owner, withDoc)
is MiniMemberTypeAliasDecl -> renderMemberTypeAliasDoc(owner, withDoc)
else -> null
}
}
}
} else {
mini.declarations.firstOrNull { it.name == ident }?.let { decl ->
return renderDeclDoc(decl, text, mini, imported)
}
}
renderDocFromInfo(info)?.let { return it }
}
// Try resolve to: function param at position, function/class/val declaration at position
@ -615,55 +570,6 @@ class LyngDocumentationProvider : AbstractDocumentationProvider() {
return sb.toString()
}
private fun findDocInDeclarationFiles(file: PsiFile, container: String?, name: String): MiniDoc? {
val declFiles = LyngAstManager.getDeclarationFiles(file)
if (declFiles.isEmpty()) return null
fun findInMini(mini: MiniScript): MiniDoc? {
if (container == null) {
mini.declarations.firstOrNull { it.name == name }?.let { return it.doc }
return null
}
val cls = mini.declarations.filterIsInstance<MiniClassDecl>().firstOrNull { it.name == container } ?: return null
cls.members.firstOrNull { it.name == name }?.let { return it.doc }
cls.ctorFields.firstOrNull { it.name == name }?.let { return null }
cls.classFields.firstOrNull { it.name == name }?.let { return null }
return null
}
for (df in declFiles) {
val mini = LyngAstManager.getMiniAst(df)
?: run {
try {
val res = runBlocking {
LyngLanguageTools.analyze(df.text, df.name)
}
res.mini
} catch (_: Throwable) {
null
}
}
if (mini != null) {
val doc = findInMini(mini)
if (doc != null) return doc
}
// Text fallback: parse preceding doc comment for the symbol
val parsed = parseDocFromText(df.text, name)
if (parsed != null) return parsed
}
return null
}
private fun parseDocFromText(text: String, name: String): MiniDoc? {
if (text.isBlank()) return null
val pattern = Regex("/\\*\\*([\\s\\S]*?)\\*/\\s*(?:public|private|protected|static|abstract|extern|open|closed|override\\s+)*\\s*(?:fun|val|var|class|interface|enum|type)\\s+$name\\b")
val m = pattern.find(text) ?: return null
val raw = m.groupValues.getOrNull(1)?.trim() ?: return null
if (raw.isBlank()) return null
val src = net.sergeych.lyng.Source("<doc>", raw)
return MiniDoc.parse(MiniRange(src.startPos, src.startPos), raw.lines())
}
private fun renderParamDoc(fn: MiniFunDecl, p: MiniParam): String {
val title = "parameter ${p.name}${typeOf(p.type)} in ${fn.name}${signatureOf(fn)}"
val sb = StringBuilder()

View File

@ -35,7 +35,7 @@ class LyngLexer : LexerBase() {
"fun", "val", "var", "class", "interface", "type", "import", "as",
"abstract", "closed", "override", "static", "extern", "open", "private", "protected",
"if", "else", "for", "while", "return", "true", "false", "null",
"when", "in", "is", "break", "continue", "try", "catch", "finally", "void",
"when", "in", "is", "break", "continue", "try", "catch", "finally",
"get", "set", "object", "enum", "init", "by", "step", "property", "constructor"
)

View File

@ -20,18 +20,12 @@ package net.sergeych.lyng.idea.navigation
import com.intellij.openapi.project.Project
import com.intellij.openapi.util.TextRange
import com.intellij.psi.*
import com.intellij.psi.search.FileTypeIndex
import com.intellij.psi.search.FilenameIndex
import com.intellij.psi.search.GlobalSearchScope
import kotlinx.coroutines.runBlocking
import net.sergeych.lyng.highlight.offsetOf
import net.sergeych.lyng.idea.LyngFileType
import net.sergeych.lyng.idea.util.LyngAstManager
import net.sergeych.lyng.idea.util.TextCtx
import net.sergeych.lyng.miniast.*
import net.sergeych.lyng.tools.IdeLenientImportProvider
import net.sergeych.lyng.tools.LyngAnalysisRequest
import net.sergeych.lyng.tools.LyngLanguageTools
class LyngPsiReference(element: PsiElement) : PsiPolyVariantReferenceBase<PsiElement>(element, TextRange(0, element.textLength)) {
@ -64,7 +58,7 @@ class LyngPsiReference(element: PsiElement) : PsiPolyVariantReferenceBase<PsiEle
// We need to find the actual PSI element for this member
val targetFile = findFileForClass(file.project, owner) ?: file
val targetMini = loadMini(targetFile)
val targetMini = LyngAstManager.getMiniAst(targetFile)
if (targetMini != null) {
val targetSrc = targetMini.range.start.source
val off = targetSrc.offsetOf(member.nameStart)
@ -129,37 +123,24 @@ class LyngPsiReference(element: PsiElement) : PsiPolyVariantReferenceBase<PsiEle
}
private fun findFileForClass(project: Project, className: String): PsiFile? {
// 1. Try file with matching name first (optimization)
val scope = GlobalSearchScope.projectScope(project)
val psiManager = PsiManager.getInstance(project)
val matchingFiles = FileTypeIndex.getFiles(LyngFileType, scope)
.asSequence()
.filter { it.name == "$className.lyng" }
.mapNotNull { psiManager.findFile(it) }
.toList()
val matchingDeclFiles = FileTypeIndex.getFiles(LyngFileType, scope)
.asSequence()
.filter { it.name == "$className.lyng.d" }
.mapNotNull { psiManager.findFile(it) }
.toList()
// 1. Try file with matching name first (optimization)
val matchingFiles = FilenameIndex.getFilesByName(project, "$className.lyng", GlobalSearchScope.projectScope(project))
for (file in matchingFiles) {
val mini = loadMini(file) ?: continue
if (mini.declarations.any { isLocalDecl(mini, it) && ((it is MiniClassDecl && it.name == className) || (it is MiniEnumDecl && it.name == className)) }) {
return file
}
}
for (file in matchingDeclFiles) {
val mini = loadMini(file) ?: continue
if (mini.declarations.any { isLocalDecl(mini, it) && ((it is MiniClassDecl && it.name == className) || (it is MiniEnumDecl && it.name == className)) }) {
val mini = LyngAstManager.getMiniAst(file) ?: continue
if (mini.declarations.any { (it is MiniClassDecl && it.name == className) || (it is MiniEnumDecl && it.name == className) }) {
return file
}
}
// 2. Fallback to full project scan
for (file in collectLyngFiles(project)) {
if (matchingFiles.contains(file) || matchingDeclFiles.contains(file)) continue // already checked
val mini = loadMini(file) ?: continue
if (mini.declarations.any { isLocalDecl(mini, it) && ((it is MiniClassDecl && it.name == className) || (it is MiniEnumDecl && it.name == className)) }) {
val allFiles = FilenameIndex.getAllFilesByExt(project, "lyng", GlobalSearchScope.projectScope(project))
for (vFile in allFiles) {
val file = psiManager.findFile(vFile) ?: continue
if (matchingFiles.contains(file)) continue // already checked
val mini = LyngAstManager.getMiniAst(file) ?: continue
if (mini.declarations.any { (it is MiniClassDecl && it.name == className) || (it is MiniEnumDecl && it.name == className) }) {
return file
}
}
@ -167,7 +148,7 @@ class LyngPsiReference(element: PsiElement) : PsiPolyVariantReferenceBase<PsiEle
}
private fun getPackageName(file: PsiFile): String? {
val mini = loadMini(file) ?: return null
val mini = LyngAstManager.getMiniAst(file) ?: return null
return try {
val pkg = mini.range.start.source.extractPackageName()
if (pkg.startsWith("lyng.")) pkg else "lyng.$pkg"
@ -191,19 +172,19 @@ class LyngPsiReference(element: PsiElement) : PsiPolyVariantReferenceBase<PsiEle
private fun resolveGlobally(project: Project, name: String, membersOnly: Boolean = false, allowedPackages: Set<String>? = null): List<ResolveResult> {
val results = mutableListOf<ResolveResult>()
val files = FilenameIndex.getAllFilesByExt(project, "lyng", GlobalSearchScope.projectScope(project))
val psiManager = PsiManager.getInstance(project)
for (file in collectLyngFiles(project)) {
for (vFile in files) {
val file = psiManager.findFile(vFile) ?: continue
// Filter by package if requested
if (allowedPackages != null) {
val pkg = getPackageName(file)
if (pkg == null) {
if (!file.name.endsWith(".lyng.d")) continue
} else if (pkg !in allowedPackages) continue
if (pkg == null || pkg !in allowedPackages) continue
}
val mini = loadMini(file) ?: continue
val mini = LyngAstManager.getMiniAst(file) ?: continue
val src = mini.range.start.source
fun addIfMatch(dName: String, nameStart: net.sergeych.lyng.Pos, dKind: String) {
@ -216,7 +197,6 @@ class LyngPsiReference(element: PsiElement) : PsiPolyVariantReferenceBase<PsiEle
}
for (d in mini.declarations) {
if (!isLocalDecl(mini, d)) continue
if (!membersOnly) {
val dKind = when(d) {
is net.sergeych.lyng.miniast.MiniFunDecl -> "Function"
@ -236,7 +216,6 @@ class LyngPsiReference(element: PsiElement) : PsiPolyVariantReferenceBase<PsiEle
}
for (m in members) {
if (m.range.start.source != src) continue
val mKind = when(m) {
is net.sergeych.lyng.miniast.MiniMemberFunDecl -> "Function"
is net.sergeych.lyng.miniast.MiniMemberValDecl -> if (m.mutable) "Variable" else "Value"
@ -250,42 +229,5 @@ class LyngPsiReference(element: PsiElement) : PsiPolyVariantReferenceBase<PsiEle
return results
}
private fun collectLyngFiles(project: Project): List<PsiFile> {
val scope = GlobalSearchScope.projectScope(project)
val psiManager = PsiManager.getInstance(project)
val out = LinkedHashSet<PsiFile>()
val lyngFiles = FilenameIndex.getAllFilesByExt(project, "lyng", scope)
for (vFile in lyngFiles) {
psiManager.findFile(vFile)?.let { out.add(it) }
}
// Include declaration files (*.lyng.d) which are indexed as extension "d".
val dFiles = FilenameIndex.getAllFilesByExt(project, "d", scope)
for (vFile in dFiles) {
if (!vFile.name.endsWith(".lyng.d")) continue
psiManager.findFile(vFile)?.let { out.add(it) }
}
return out.toList()
}
private fun loadMini(file: PsiFile): MiniScript? {
LyngAstManager.getMiniAst(file)?.let { return it }
return try {
val provider = IdeLenientImportProvider.create()
runBlocking {
LyngLanguageTools.analyze(
LyngAnalysisRequest(text = file.text, fileName = file.name, importProvider = provider)
)
}.mini
} catch (_: Throwable) {
null
}
}
private fun isLocalDecl(mini: MiniScript, decl: MiniDecl): Boolean =
decl.range.start.source == mini.range.start.source
override fun getVariants(): Array<Any> = emptyArray()
}

View File

@ -21,22 +21,20 @@ import com.intellij.openapi.application.runReadAction
import com.intellij.openapi.util.Key
import com.intellij.psi.PsiFile
import com.intellij.psi.PsiManager
import com.intellij.psi.search.FileTypeIndex
import com.intellij.psi.search.FilenameIndex
import com.intellij.psi.search.GlobalSearchScope
import kotlinx.coroutines.runBlocking
import net.sergeych.lyng.binding.BindingSnapshot
import net.sergeych.lyng.idea.LyngFileType
import net.sergeych.lyng.miniast.*
import net.sergeych.lyng.tools.*
import net.sergeych.lyng.miniast.DocLookupUtils
import net.sergeych.lyng.miniast.MiniScript
import net.sergeych.lyng.tools.IdeLenientImportProvider
import net.sergeych.lyng.tools.LyngAnalysisRequest
import net.sergeych.lyng.tools.LyngAnalysisResult
import net.sergeych.lyng.tools.LyngLanguageTools
object LyngAstManager {
private val MINI_KEY = Key.create<MiniScript>("lyng.mini.cache")
private val BINDING_KEY = Key.create<BindingSnapshot>("lyng.binding.cache")
private val STAMP_KEY = Key.create<Long>("lyng.mini.cache.stamp")
private val ANALYSIS_KEY = Key.create<LyngAnalysisResult>("lyng.analysis.cache")
private val implicitBuiltinNames = setOf("void")
private val includeSymbolsDirective = Regex("""(?im)^\s*//\s*include\s+symbols\s*:\s*(.+?)\s*$""")
fun getMiniAst(file: PsiFile): MiniScript? = runReadAction {
getAnalysis(file)?.mini
@ -45,8 +43,8 @@ object LyngAstManager {
fun getCombinedStamp(file: PsiFile): Long = runReadAction {
var combinedStamp = file.viewProvider.modificationStamp
if (!file.name.endsWith(".lyng.d")) {
collectDeclarationFiles(file).forEach { symbolsFile ->
combinedStamp += symbolsFile.viewProvider.modificationStamp
collectDeclarationFiles(file).forEach { df ->
combinedStamp += df.viewProvider.modificationStamp
}
}
combinedStamp
@ -54,81 +52,22 @@ object LyngAstManager {
private fun collectDeclarationFiles(file: PsiFile): List<PsiFile> = runReadAction {
val psiManager = PsiManager.getInstance(file.project)
var current = file.virtualFile?.parent
val seen = mutableSetOf<String>()
val result = mutableListOf<PsiFile>()
var currentDir = file.containingDirectory
while (currentDir != null) {
for (child in currentDir.files) {
if (child.name.endsWith(".lyng.d") && child != file && seen.add(child.virtualFile.path)) {
result.add(child)
while (current != null) {
for (child in current.children) {
if (child.name.endsWith(".lyng.d") && child != file.virtualFile && seen.add(child.path)) {
val psiD = psiManager.findFile(child) ?: continue
result.add(psiD)
}
}
currentDir = currentDir.parentDirectory
}
val includeSpecs = includeSymbolsDirective.findAll(file.viewProvider.contents)
.flatMap { it.groupValues[1].split(',').asSequence() }
.map { it.trim() }
.filter { it.isNotEmpty() }
.toList()
val baseDir = file.virtualFile?.parent
if (baseDir != null) {
for (spec in includeSpecs) {
val included = baseDir.findFileByRelativePath(spec) ?: continue
if (included.path == file.virtualFile?.path) continue
if (seen.add(included.path)) {
psiManager.findFile(included)?.let { result.add(it) }
}
}
}
if (result.isNotEmpty()) return@runReadAction result
// Fallback for virtual/light files without a stable parent chain (e.g., tests)
val basePath = file.virtualFile?.path ?: return@runReadAction result
val scope = GlobalSearchScope.projectScope(file.project)
val dFiles = FilenameIndex.getAllFilesByExt(file.project, "d", scope)
for (vFile in dFiles) {
if (!vFile.name.endsWith(".lyng.d")) continue
if (vFile.path == basePath) continue
val parentPath = vFile.parent?.path ?: continue
if (basePath == parentPath || basePath.startsWith(parentPath.trimEnd('/') + "/")) {
if (seen.add(vFile.path)) {
psiManager.findFile(vFile)?.let { result.add(it) }
}
}
}
if (result.isNotEmpty()) return@runReadAction result
// Fallback: scan all Lyng files in project index and filter by .lyng.d
val lyngFiles = FileTypeIndex.getFiles(LyngFileType, scope)
for (vFile in lyngFiles) {
if (!vFile.name.endsWith(".lyng.d")) continue
if (vFile.path == basePath) continue
if (seen.add(vFile.path)) {
psiManager.findFile(vFile)?.let { result.add(it) }
}
}
if (result.isNotEmpty()) return@runReadAction result
// Final fallback: include all .lyng.d files in project scope
for (vFile in dFiles) {
if (!vFile.name.endsWith(".lyng.d")) continue
if (vFile.path == basePath) continue
if (seen.add(vFile.path)) {
psiManager.findFile(vFile)?.let { result.add(it) }
}
current = current.parent
}
result
}
fun getDeclarationFiles(file: PsiFile): List<PsiFile> = runReadAction {
collectDeclarationFiles(file)
}
fun getBinding(file: PsiFile): BindingSnapshot? = runReadAction {
getAnalysis(file)?.binding
}
@ -153,38 +92,20 @@ object LyngAstManager {
}
if (built != null) {
val isDecl = file.name.endsWith(".lyng.d")
val merged = if (!isDecl && built.mini == null) {
MiniScript(MiniRange(built.source.startPos, built.source.startPos))
} else {
built.mini
}
if (merged != null && !isDecl) {
val merged = built.mini
if (merged != null && !file.name.endsWith(".lyng.d")) {
val dFiles = collectDeclarationFiles(file)
for (df in dFiles) {
val dMini = getAnalysis(df)?.mini ?: run {
val dText = df.viewProvider.contents.toString()
try {
val provider = IdeLenientImportProvider.create()
runBlocking {
LyngLanguageTools.analyze(
LyngAnalysisRequest(text = dText, fileName = df.name, importProvider = provider)
)
}.mini
} catch (_: Throwable) {
null
}
} ?: continue
val dAnalysis = getAnalysis(df)
val dMini = dAnalysis?.mini ?: continue
merged.declarations.addAll(dMini.declarations)
merged.imports.addAll(dMini.imports)
}
}
val finalAnalysis = if (merged != null) {
val mergedImports = DocLookupUtils.canonicalImportedModules(merged, text)
built.copy(
mini = merged,
importedModules = mergedImports,
diagnostics = filterDiagnostics(built.diagnostics, merged, text, mergedImports)
importedModules = DocLookupUtils.canonicalImportedModules(merged, text)
)
} else {
built
@ -197,45 +118,4 @@ object LyngAstManager {
}
null
}
private fun filterDiagnostics(
diagnostics: List<LyngDiagnostic>,
merged: MiniScript,
text: String,
importedModules: List<String>
): List<LyngDiagnostic> {
if (diagnostics.isEmpty()) return diagnostics
val declaredTopLevel = merged.declarations.map { it.name }.toSet()
val declaredMembers = linkedSetOf<String>()
val aggregatedClasses = DocLookupUtils.aggregateClasses(importedModules, merged)
for (cls in aggregatedClasses.values) {
cls.members.forEach { declaredMembers.add(it.name) }
cls.ctorFields.forEach { declaredMembers.add(it.name) }
cls.classFields.forEach { declaredMembers.add(it.name) }
}
merged.declarations.filterIsInstance<MiniEnumDecl>().forEach { en ->
DocLookupUtils.enumToSyntheticClass(en).members.forEach { declaredMembers.add(it.name) }
}
val builtinTopLevel = linkedSetOf<String>()
for (mod in importedModules) {
BuiltinDocRegistry.docsForModule(mod).forEach { builtinTopLevel.add(it.name) }
}
return diagnostics.filterNot { diag ->
val msg = diag.message
if (msg.startsWith("unresolved name: ")) {
val name = msg.removePrefix("unresolved name: ").trim()
name in declaredTopLevel || name in builtinTopLevel || name in implicitBuiltinNames
} else if (msg.startsWith("unresolved member: ")) {
val name = msg.removePrefix("unresolved member: ").trim()
val range = diag.range
val dotLeft = if (range != null) DocLookupUtils.findDotLeft(text, range.start) else null
dotLeft != null && name in declaredMembers
} else {
false
}
}
}
}

View File

@ -1,182 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyng.idea.definitions
import com.intellij.testFramework.fixtures.BasePlatformTestCase
import kotlinx.coroutines.runBlocking
import net.sergeych.lyng.idea.docs.LyngDocumentationProvider
import net.sergeych.lyng.idea.navigation.LyngPsiReference
import net.sergeych.lyng.idea.settings.LyngFormatterSettings
import net.sergeych.lyng.idea.util.LyngAstManager
import net.sergeych.lyng.miniast.CompletionEngineLight
class LyngDefinitionFilesTest : BasePlatformTestCase() {
override fun getTestDataPath(): String = ""
private fun enableCompletion() {
LyngFormatterSettings.getInstance(project).enableLyngCompletionExperimental = true
}
private fun addDefinitionsFile() {
val defs = """
/** Utilities exposed via .lyng.d */
class Declared(val name: String) {
/** Size property */
val size: Int = 0
/** Returns greeting. */
fun greet(who: String): String = "hi " + who
}
/** Top-level function. */
fun topFun(x: Int): Int = x + 1
""".trimIndent()
myFixture.addFileToProject("api.lyng.d", defs)
}
private fun addPlainSymbolsFile() {
val defs = """
/** Symbols exposed via include directive */
class PlainDeclared(val name: String) {
fun hello(): String = "ok"
}
fun plainTopFun(x: Int): Int = x + 2
""".trimIndent()
myFixture.addFileToProject("plain_symbols.lyng", defs)
}
fun test_CompletionsIncludeDefinitions() {
addDefinitionsFile()
enableCompletion()
run {
val code = """
val v = top<caret>
""".trimIndent()
myFixture.configureByText("main.lyng", code)
val text = myFixture.editor.document.text
val caret = myFixture.caretOffset
val analysis = LyngAstManager.getAnalysis(myFixture.file)
val engine = runBlocking { CompletionEngineLight.completeSuspend(text, caret, analysis?.mini, analysis?.binding).map { it.name } }
assertTrue("Expected topFun from .lyng.d; got=$engine", engine.contains("topFun"))
}
run {
val code = """
<caret>
""".trimIndent()
myFixture.configureByText("other.lyng", code)
val text = myFixture.editor.document.text
val caret = myFixture.caretOffset
val analysis = LyngAstManager.getAnalysis(myFixture.file)
val engine = runBlocking { CompletionEngineLight.completeSuspend(text, caret, analysis?.mini, analysis?.binding).map { it.name } }
assertTrue("Expected Declared from .lyng.d; got=$engine", engine.contains("Declared"))
}
}
fun test_GotoDefinitionResolvesToDefinitionFile() {
addDefinitionsFile()
val code = """
val x = topFun(1)
val y = Declared("x")
y.gre<caret>et("me")
""".trimIndent()
myFixture.configureByText("main.lyng", code)
val offset = myFixture.caretOffset
val element = myFixture.file.findElementAt(offset) ?: myFixture.file.findElementAt((offset - 1).coerceAtLeast(0))
assertNotNull("Expected element at caret for resolve", element)
val ref = LyngPsiReference(element!!)
val resolved = ref.resolve()
assertNotNull("Expected reference to resolve", resolved)
assertTrue("Expected .lyng.d target; got=${resolved!!.containingFile.name}", resolved.containingFile.name.endsWith(".lyng.d"))
}
fun test_QuickDocUsesDefinitionDocs() {
addDefinitionsFile()
val code = """
val y = Declared("x")
y.gre<caret>et("me")
""".trimIndent()
myFixture.configureByText("main.lyng", code)
val provider = LyngDocumentationProvider()
val offset = myFixture.caretOffset
val element = myFixture.file.findElementAt(offset) ?: myFixture.file.findElementAt((offset - 1).coerceAtLeast(0))
assertNotNull("Expected element at caret for doc", element)
val doc = provider.generateDoc(element, element)
assertNotNull("Expected Quick Doc", doc)
assertTrue("Doc should include summary; got=$doc", doc!!.contains("Returns greeting"))
}
fun test_DiagnosticsIgnoreDefinitionSymbols() {
addDefinitionsFile()
val code = """
val x = topFun(1)
val y = Declared("x")
y.greet("me")
""".trimIndent()
myFixture.configureByText("main.lyng", code)
val analysis = LyngAstManager.getAnalysis(myFixture.file)
val messages = analysis?.diagnostics?.map { it.message } ?: emptyList()
assertTrue("Should not report unresolved name for topFun", messages.none { it.contains("unresolved name: topFun") })
assertTrue("Should not report unresolved name for Declared", messages.none { it.contains("unresolved name: Declared") })
assertTrue("Should not report unresolved member for greet", messages.none { it.contains("unresolved member: greet") })
}
fun test_DiagnosticsDoNotReportVoidAsUnresolvedName() {
val code = """
fun f(): void {
return void
}
""".trimIndent()
myFixture.configureByText("main.lyng", code)
val analysis = LyngAstManager.getAnalysis(myFixture.file)
val messages = analysis?.diagnostics?.map { it.message } ?: emptyList()
assertTrue("Should not report unresolved name for void, got=$messages", messages.none { it.contains("unresolved name: void") })
}
fun test_CompletionsIncludePlainLyngViaDirective() {
addPlainSymbolsFile()
enableCompletion()
val code = """
// include symbols: plain_symbols.lyng
val v = plainTop<caret>
""".trimIndent()
myFixture.configureByText("main.lyng", code)
val text = myFixture.editor.document.text
val caret = myFixture.caretOffset
val analysis = LyngAstManager.getAnalysis(myFixture.file)
val engine = runBlocking { CompletionEngineLight.completeSuspend(text, caret, analysis?.mini, analysis?.binding).map { it.name } }
assertTrue("Expected plainTopFun from included .lyng; got=$engine", engine.contains("plainTopFun"))
}
fun test_DiagnosticsIgnorePlainLyngSymbolsViaDirective() {
addPlainSymbolsFile()
val code = """
// include symbols: plain_symbols.lyng
val x = plainTopFun(1)
val y = PlainDeclared("x")
y.hello()
""".trimIndent()
myFixture.configureByText("main.lyng", code)
val analysis = LyngAstManager.getAnalysis(myFixture.file)
val messages = analysis?.diagnostics?.map { it.message } ?: emptyList()
assertTrue("Should not report unresolved name for plainTopFun", messages.none { it.contains("unresolved name: plainTopFun") })
assertTrue("Should not report unresolved name for PlainDeclared", messages.none { it.contains("unresolved name: PlainDeclared") })
assertTrue("Should not report unresolved member for hello", messages.none { it.contains("unresolved member: hello") })
}
}

View File

@ -1,5 +1,5 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
* Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -32,10 +32,8 @@ import net.sergeych.lyng.LyngVersion
import net.sergeych.lyng.Script
import net.sergeych.lyng.ScriptError
import net.sergeych.lyng.Source
import net.sergeych.lyng.io.console.createConsoleModule
import net.sergeych.lyng.io.fs.createFs
import net.sergeych.lyng.obj.*
import net.sergeych.lyngio.console.security.PermitAllConsoleAccessPolicy
import net.sergeych.lyngio.fs.security.PermitAllAccessPolicy
import net.sergeych.mp_tools.globalDefer
import okio.FileSystem
@ -71,9 +69,6 @@ val baseScopeDefer = globalDefer {
// Install lyng.io.fs module with full access by default for the CLI tool's Scope.
// Scripts still need to `import lyng.io.fs` to use Path API.
createFs(PermitAllAccessPolicy, this)
// Install console access by default for interactive CLI scripts.
// Scripts still need to `import lyng.io.console` to use it.
createConsoleModule(PermitAllConsoleAccessPolicy, this)
}
}

View File

@ -78,7 +78,6 @@ kotlin {
api(project(":lynglib"))
api(libs.okio)
api(libs.kotlinx.coroutines.core)
api(libs.mordant.core)
}
}
val commonTest by getting {
@ -95,13 +94,6 @@ kotlin {
implementation("com.squareup.okio:okio-nodefilesystem:${libs.versions.okioVersion.get()}")
}
}
val jvmMain by getting {
dependencies {
implementation(libs.mordant.jvm.jna)
implementation("org.jline:jline-reader:3.29.0")
implementation("org.jline:jline-terminal:3.29.0")
}
}
// // For Wasm we use in-memory VFS for now
// val wasmJsMain by getting {
// dependencies {
@ -112,64 +104,6 @@ kotlin {
}
}
abstract class GenerateLyngioConsoleDecls : DefaultTask() {
@get:InputFile
@get:PathSensitive(PathSensitivity.RELATIVE)
abstract val sourceFile: RegularFileProperty
@get:OutputDirectory
abstract val outputDir: DirectoryProperty
@TaskAction
fun generate() {
val targetPkg = "net.sergeych.lyngio.stdlib_included"
val pkgPath = targetPkg.replace('.', '/')
val targetDir = outputDir.get().asFile.resolve(pkgPath)
targetDir.mkdirs()
val text = sourceFile.get().asFile.readText()
fun escapeForQuoted(s: String): String = buildString {
for (ch in s) when (ch) {
'\\' -> append("\\\\")
'"' -> append("\\\"")
'\n' -> append("\\n")
'\r' -> {}
'\t' -> append("\\t")
else -> append(ch)
}
}
val out = buildString {
append("package ").append(targetPkg).append("\n\n")
append("@Suppress(\"Unused\", \"MemberVisibilityCanBePrivate\")\n")
append("internal val consoleLyng = \"")
append(escapeForQuoted(text))
append("\"\n")
}
targetDir.resolve("console_types_lyng.generated.kt").writeText(out)
}
}
val lyngioConsoleDeclsFile = layout.projectDirectory.file("stdlib/lyng/io/console.lyng")
val generatedLyngioDeclsDir = layout.buildDirectory.dir("generated/source/lyngioDecls/commonMain/kotlin")
val generateLyngioConsoleDecls by tasks.registering(GenerateLyngioConsoleDecls::class) {
sourceFile.set(lyngioConsoleDeclsFile)
outputDir.set(generatedLyngioDeclsDir)
}
kotlin.sourceSets.named("commonMain") {
kotlin.srcDir(generateLyngioConsoleDecls)
}
kotlin.targets.configureEach {
compilations.configureEach {
compileTaskProvider.configure {
dependsOn(generateLyngioConsoleDecls)
}
}
}
android {
namespace = "net.sergeych.lyngio"
compileSdk = libs.versions.android.compileSdk.get().toInt()

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@ -1,22 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
internal actual fun consoleFlowDebug(message: String, error: Throwable?) {
// no-op on Android
}

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@ -1,20 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
actual fun getSystemConsole(): LyngConsole = MordantLyngConsole

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@ -1,494 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyng.io.console
import net.sergeych.lyng.ModuleScope
import net.sergeych.lyng.Scope
import net.sergeych.lyng.ScopeFacade
import net.sergeych.lyng.Source
import net.sergeych.lyng.obj.Obj
import net.sergeych.lyng.obj.ObjBool
import net.sergeych.lyng.obj.ObjEnumClass
import net.sergeych.lyng.obj.ObjEnumEntry
import net.sergeych.lyng.obj.ObjIterable
import net.sergeych.lyng.obj.ObjIterationFinishedException
import net.sergeych.lyng.obj.ObjIterator
import net.sergeych.lyng.obj.ObjNull
import net.sergeych.lyng.obj.ObjString
import net.sergeych.lyng.obj.ObjVoid
import net.sergeych.lyng.obj.requiredArg
import net.sergeych.lyng.obj.thisAs
import net.sergeych.lyng.obj.toObj
import net.sergeych.lyng.pacman.ImportManager
import net.sergeych.lyng.raiseIllegalOperation
import net.sergeych.lyng.requireScope
import net.sergeych.lyngio.console.*
import net.sergeych.lyngio.console.security.ConsoleAccessDeniedException
import net.sergeych.lyngio.console.security.ConsoleAccessPolicy
import net.sergeych.lyngio.console.security.LyngConsoleSecured
import net.sergeych.lyngio.stdlib_included.consoleLyng
private const val CONSOLE_MODULE_NAME = "lyng.io.console"
/**
* Install Lyng module `lyng.io.console` into the given scope's ImportManager.
*/
fun createConsoleModule(policy: ConsoleAccessPolicy, scope: Scope): Boolean =
createConsoleModule(policy, scope.importManager)
fun createConsole(policy: ConsoleAccessPolicy, scope: Scope): Boolean = createConsoleModule(policy, scope)
/** Same as [createConsoleModule] but with explicit [ImportManager]. */
fun createConsoleModule(policy: ConsoleAccessPolicy, manager: ImportManager): Boolean {
if (manager.packageNames.contains(CONSOLE_MODULE_NAME)) return false
manager.addPackage(CONSOLE_MODULE_NAME) { module ->
buildConsoleModule(module, policy)
}
return true
}
fun createConsole(policy: ConsoleAccessPolicy, manager: ImportManager): Boolean = createConsoleModule(policy, manager)
private suspend fun buildConsoleModule(module: ModuleScope, policy: ConsoleAccessPolicy) {
// Load Lyng declarations for console enums/types first (module-local source of truth).
module.eval(Source(CONSOLE_MODULE_NAME, consoleLyng))
ConsoleEnums.initialize(module)
val console: LyngConsole = LyngConsoleSecured(getSystemConsole(), policy)
val consoleType = object : net.sergeych.lyng.obj.ObjClass("Console") {}
consoleType.apply {
addClassFn("isSupported") {
ObjBool(console.isSupported)
}
addClassFn("isTty") {
consoleGuard {
ObjBool(console.isTty())
}
}
addClassFn("ansiLevel") {
consoleGuard {
ConsoleEnums.ansiLevel(console.ansiLevel().name)
}
}
addClassFn("geometry") {
consoleGuard {
console.geometry()?.let { ObjConsoleGeometry(it.columns, it.rows) } ?: ObjNull
}
}
addClassFn("details") {
consoleGuard {
val tty = console.isTty()
val ansi = console.ansiLevel()
val geometry = console.geometry()
ObjConsoleDetails(
supported = console.isSupported,
isTty = tty,
ansiLevel = ConsoleEnums.ansiLevel(ansi.name),
geometry = geometry?.let { ObjConsoleGeometry(it.columns, it.rows) },
)
}
}
addClassFn("write") {
consoleGuard {
val text = requiredArg<ObjString>(0).value
console.write(text)
ObjVoid
}
}
addClassFn("flush") {
consoleGuard {
console.flush()
ObjVoid
}
}
addClassFn("home") {
consoleGuard {
console.write("\u001B[H")
ObjVoid
}
}
addClassFn("clear") {
consoleGuard {
console.write("\u001B[2J")
ObjVoid
}
}
addClassFn("moveTo") {
consoleGuard {
val row = requiredArg<net.sergeych.lyng.obj.ObjInt>(0).value
val col = requiredArg<net.sergeych.lyng.obj.ObjInt>(1).value
console.write("\u001B[${row};${col}H")
ObjVoid
}
}
addClassFn("clearLine") {
consoleGuard {
console.write("\u001B[2K")
ObjVoid
}
}
addClassFn("enterAltScreen") {
consoleGuard {
console.write("\u001B[?1049h")
ObjVoid
}
}
addClassFn("leaveAltScreen") {
consoleGuard {
console.write("\u001B[?1049l")
ObjVoid
}
}
addClassFn("setCursorVisible") {
consoleGuard {
val visible = requiredArg<ObjBool>(0).value
console.write(if (visible) "\u001B[?25h" else "\u001B[?25l")
ObjVoid
}
}
addClassFn("events") {
consoleGuard {
console.events().toConsoleEventStream()
}
}
addClassFn("setRawMode") {
consoleGuard {
val enabled = requiredArg<ObjBool>(0).value
ObjBool(console.setRawMode(enabled))
}
}
}
module.addConst("Console", consoleType)
module.addConst("ConsoleGeometry", ObjConsoleGeometry.type)
module.addConst("ConsoleDetails", ObjConsoleDetails.type)
module.addConst("ConsoleEvent", ObjConsoleEvent.type)
module.addConst("ConsoleResizeEvent", ObjConsoleResizeEvent.type)
module.addConst("ConsoleKeyEvent", ObjConsoleKeyEvent.typeObj)
module.addConst("ConsoleEventStream", ObjConsoleEventStream.type)
}
private suspend inline fun ScopeFacade.consoleGuard(crossinline block: suspend () -> Obj): Obj {
return try {
block()
} catch (e: ConsoleAccessDeniedException) {
raiseIllegalOperation(e.reasonDetail ?: "console access denied")
} catch (e: Exception) {
raiseIllegalOperation(e.message ?: "console error")
}
}
private fun ConsoleEventSource.toConsoleEventStream(): ObjConsoleEventStream {
return ObjConsoleEventStream(this)
}
private class ObjConsoleEventStream(
private val source: ConsoleEventSource,
) : Obj() {
override val objClass: net.sergeych.lyng.obj.ObjClass
get() = type
companion object {
val type = net.sergeych.lyng.obj.ObjClass("ConsoleEventStream", ObjIterable).apply {
addFn("iterator") {
val stream = thisAs<ObjConsoleEventStream>()
ObjConsoleEventIterator(stream.source)
}
}
}
}
private class ObjConsoleEventIterator(
private val source: ConsoleEventSource,
) : Obj() {
private var cached: Obj? = null
private var closed = false
override val objClass: net.sergeych.lyng.obj.ObjClass
get() = type
private suspend fun ensureCached(): Boolean {
if (closed) return false
if (cached != null) return true
while (!closed && cached == null) {
val event = try {
source.nextEvent()
} catch (e: Throwable) {
// Consumer loops must survive source/read failures: report and keep polling.
consoleFlowDebug("console-bridge: nextEvent failed; dropping failure and continuing", e)
continue
}
if (event == null) {
closeSource()
return false
}
cached = try {
event.toObjEvent()
} catch (e: Throwable) {
// Malformed/native event payload must not terminate consumer iteration.
consoleFlowDebug("console-bridge: malformed event dropped: $event", e)
null
}
}
return cached != null
}
private suspend fun closeSource() {
if (closed) return
closed = true
// Do not close the underlying console source from VM iterator cancellation.
// CmdFrame.cancelIterators() may call cancelIteration() while user code is still
// expected to keep processing input (e.g. recover from app-level exceptions).
// The source lifecycle is managed by the console runtime.
}
suspend fun hasNext(): Boolean = ensureCached()
suspend fun next(scope: Scope): Obj {
if (!ensureCached()) {
scope.raiseError(ObjIterationFinishedException(scope))
}
val out = cached ?: scope.raiseError("console iterator internal error: missing cached event")
cached = null
return out
}
companion object {
val type = net.sergeych.lyng.obj.ObjClass("ConsoleEventIterator", ObjIterator).apply {
addFn("hasNext") {
thisAs<ObjConsoleEventIterator>().hasNext().toObj()
}
addFn("next") {
thisAs<ObjConsoleEventIterator>().next(requireScope())
}
addFn("cancelIteration") {
thisAs<ObjConsoleEventIterator>().closeSource()
ObjVoid
}
}
}
}
private fun ConsoleEvent.toObjEvent(): Obj = when (this) {
is ConsoleEvent.Resize -> ObjConsoleResizeEvent(columns, rows)
is ConsoleEvent.KeyDown -> ObjConsoleKeyEvent(type = ConsoleEnums.KEY_DOWN, key = sanitizedKeyOrFallback(key), codeName = code, ctrl = ctrl, alt = alt, shift = shift, meta = meta)
is ConsoleEvent.KeyUp -> ObjConsoleKeyEvent(type = ConsoleEnums.KEY_UP, key = sanitizedKeyOrFallback(key), codeName = code, ctrl = ctrl, alt = alt, shift = shift, meta = meta)
}
private fun sanitizedKeyOrFallback(key: String): String {
if (key.isNotEmpty()) return key
consoleFlowDebug("console-bridge: empty key value received; using fallback key name")
return "Unknown"
}
private object ConsoleEnums {
lateinit var eventTypeClass: ObjEnumClass
private set
lateinit var keyCodeClass: ObjEnumClass
private set
lateinit var ansiLevelClass: ObjEnumClass
private set
private lateinit var eventEntries: Map<String, ObjEnumEntry>
private lateinit var keyCodeEntries: Map<String, ObjEnumEntry>
private lateinit var ansiLevelEntries: Map<String, ObjEnumEntry>
val UNKNOWN: ObjEnumEntry get() = event("UNKNOWN")
val RESIZE: ObjEnumEntry get() = event("RESIZE")
val KEY_DOWN: ObjEnumEntry get() = event("KEY_DOWN")
val KEY_UP: ObjEnumEntry get() = event("KEY_UP")
val CODE_UNKNOWN: ObjEnumEntry get() = code("UNKNOWN")
val CHARACTER: ObjEnumEntry get() = code("CHARACTER")
fun initialize(module: ModuleScope) {
eventTypeClass = resolveEnum(module, "ConsoleEventType")
keyCodeClass = resolveEnum(module, "ConsoleKeyCode")
ansiLevelClass = resolveEnum(module, "ConsoleAnsiLevel")
eventEntries = resolveEntries(
eventTypeClass,
listOf("UNKNOWN", "RESIZE", "KEY_DOWN", "KEY_UP")
)
keyCodeEntries = resolveEntries(
keyCodeClass,
listOf(
"UNKNOWN", "CHARACTER", "ARROW_UP", "ARROW_DOWN", "ARROW_LEFT", "ARROW_RIGHT",
"HOME", "END", "INSERT", "DELETE", "PAGE_UP", "PAGE_DOWN",
"ESCAPE", "ENTER", "TAB", "BACKSPACE", "SPACE"
)
)
ansiLevelEntries = resolveEntries(
ansiLevelClass,
listOf("NONE", "BASIC16", "ANSI256", "TRUECOLOR")
)
}
private fun resolveEnum(module: ModuleScope, enumName: String): ObjEnumClass {
val local = module.get(enumName)?.value as? ObjEnumClass
if (local != null) return local
val root = module.importProvider.rootScope.get(enumName)?.value as? ObjEnumClass
return root ?: error("lyng.io.console declaration enum is missing: $enumName")
}
private fun resolveEntries(enumClass: ObjEnumClass, names: List<String>): Map<String, ObjEnumEntry> {
return names.associateWith { name ->
(enumClass.byName[ObjString(name)] as? ObjEnumEntry)
?: error("lyng.io.console enum entry is missing: ${enumClass.className}.$name")
}
}
fun event(name: String): ObjEnumEntry = eventEntries[name]
?: error("lyng.io.console enum entry is missing: ${eventTypeClass.className}.$name")
fun code(name: String): ObjEnumEntry = keyCodeEntries[name]
?: error("lyng.io.console enum entry is missing: ${keyCodeClass.className}.$name")
fun ansiLevel(name: String): ObjEnumEntry = ansiLevelEntries[name]
?: error("lyng.io.console enum entry is missing: ${ansiLevelClass.className}.$name")
}
private val KEY_CODE_BY_KEY_NAME = mapOf(
"ArrowUp" to "ARROW_UP",
"ArrowDown" to "ARROW_DOWN",
"ArrowLeft" to "ARROW_LEFT",
"ArrowRight" to "ARROW_RIGHT",
"Home" to "HOME",
"End" to "END",
"Insert" to "INSERT",
"Delete" to "DELETE",
"PageUp" to "PAGE_UP",
"PageDown" to "PAGE_DOWN",
"Escape" to "ESCAPE",
"Enter" to "ENTER",
"Tab" to "TAB",
"Backspace" to "BACKSPACE",
" " to "SPACE",
)
private fun codeFrom(key: String, codeName: String?): ObjEnumEntry {
val resolved = KEY_CODE_BY_KEY_NAME[codeName ?: key]
return when {
resolved != null -> ConsoleEnums.code(resolved)
key.length == 1 -> ConsoleEnums.CHARACTER
else -> ConsoleEnums.CODE_UNKNOWN
}
}
private abstract class ObjConsoleEventBase(
private val type: ObjEnumEntry,
final override val objClass: net.sergeych.lyng.obj.ObjClass,
) : Obj() {
fun type(): ObjEnumEntry = type
}
private class ObjConsoleEvent : ObjConsoleEventBase(ConsoleEnums.UNKNOWN, type) {
companion object {
val type = net.sergeych.lyng.obj.ObjClass("ConsoleEvent").apply {
addProperty(name = "type", getter = { (this.thisObj as ObjConsoleEventBase).type() })
}
}
}
private class ObjConsoleResizeEvent(
val columns: Int,
val rows: Int,
) : ObjConsoleEventBase(ConsoleEnums.RESIZE, type) {
companion object {
val type = net.sergeych.lyng.obj.ObjClass("ConsoleResizeEvent", ObjConsoleEvent.type).apply {
addProperty(name = "columns", getter = { (this.thisObj as ObjConsoleResizeEvent).columns.toObj() })
addProperty(name = "rows", getter = { (this.thisObj as ObjConsoleResizeEvent).rows.toObj() })
}
}
}
private class ObjConsoleKeyEvent(
type: ObjEnumEntry,
val key: String,
val codeName: String?,
val ctrl: Boolean,
val alt: Boolean,
val shift: Boolean,
val meta: Boolean,
) : ObjConsoleEventBase(type, typeObj) {
init {
require(key.isNotEmpty()) { "ConsoleKeyEvent.key must never be empty" }
}
companion object {
val typeObj = net.sergeych.lyng.obj.ObjClass("ConsoleKeyEvent", ObjConsoleEvent.type).apply {
addProperty(name = "key", getter = { ObjString((this.thisObj as ObjConsoleKeyEvent).key) })
addProperty(name = "code", getter = { codeFrom((this.thisObj as ObjConsoleKeyEvent).key, (this.thisObj as ObjConsoleKeyEvent).codeName) })
addProperty(name = "codeName", getter = {
val code = (this.thisObj as ObjConsoleKeyEvent).codeName
code?.let(::ObjString) ?: ObjNull
})
addProperty(name = "ctrl", getter = { (this.thisObj as ObjConsoleKeyEvent).ctrl.toObj() })
addProperty(name = "alt", getter = { (this.thisObj as ObjConsoleKeyEvent).alt.toObj() })
addProperty(name = "shift", getter = { (this.thisObj as ObjConsoleKeyEvent).shift.toObj() })
addProperty(name = "meta", getter = { (this.thisObj as ObjConsoleKeyEvent).meta.toObj() })
}
}
}
private class ObjConsoleGeometry(
val columns: Int,
val rows: Int,
) : Obj() {
override val objClass: net.sergeych.lyng.obj.ObjClass get() = type
companion object {
val type = net.sergeych.lyng.obj.ObjClass("ConsoleGeometry").apply {
addProperty(name = "columns", getter = { (this.thisObj as ObjConsoleGeometry).columns.toObj() })
addProperty(name = "rows", getter = { (this.thisObj as ObjConsoleGeometry).rows.toObj() })
}
}
}
private class ObjConsoleDetails(
val supported: Boolean,
val isTty: Boolean,
val ansiLevel: ObjEnumEntry,
val geometry: ObjConsoleGeometry?,
) : Obj() {
override val objClass: net.sergeych.lyng.obj.ObjClass get() = type
companion object {
val type = net.sergeych.lyng.obj.ObjClass("ConsoleDetails").apply {
addProperty(name = "supported", getter = { (this.thisObj as ObjConsoleDetails).supported.toObj() })
addProperty(name = "isTty", getter = { (this.thisObj as ObjConsoleDetails).isTty.toObj() })
addProperty(name = "ansiLevel", getter = { (this.thisObj as ObjConsoleDetails).ansiLevel })
addProperty(name = "geometry", getter = { (this.thisObj as ObjConsoleDetails).geometry ?: ObjNull })
}
}
}

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@ -1,5 +1,5 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
* Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -24,10 +24,10 @@ package net.sergeych.lyng.io.fs
import net.sergeych.lyng.ModuleScope
import net.sergeych.lyng.Scope
import net.sergeych.lyng.ScopeFacade
import net.sergeych.lyng.requireScope
import net.sergeych.lyng.miniast.*
import net.sergeych.lyng.obj.*
import net.sergeych.lyng.pacman.ImportManager
import net.sergeych.lyng.requireScope
import net.sergeych.lyngio.fs.LyngFS
import net.sergeych.lyngio.fs.LyngFs
import net.sergeych.lyngio.fs.LyngPath
@ -191,7 +191,7 @@ private suspend fun buildFsModule(module: ModuleScope, policy: FsAccessPolicy) {
fsGuard {
val self = this.thisObj as ObjPath
val m = self.ensureMetadata()
m.modifiedAtMillis?.let { ObjInstant(kotlin.time.Instant.fromEpochMilliseconds(it)) } ?: ObjNull
m.modifiedAtMillis?.let { ObjInstant(kotlinx.datetime.Instant.fromEpochMilliseconds(it)) } ?: ObjNull
}
}
// modifiedAtMillis(): Int? — milliseconds since epoch or null
@ -314,9 +314,9 @@ private suspend fun buildFsModule(module: ModuleScope, policy: FsAccessPolicy) {
ObjMap(mutableMapOf(
ObjString("isFile") to ObjBool(m.isRegularFile),
ObjString("isDirectory") to ObjBool(m.isDirectory),
ObjString("size") to (m.size ?: 0L).toObj(),
ObjString("createdAtMillis") to (m.createdAtMillis ?: 0L).toObj(),
ObjString("modifiedAtMillis") to (m.modifiedAtMillis ?: 0L).toObj(),
ObjString("size") to (m.size?.toLong() ?: 0L).toObj(),
ObjString("createdAtMillis") to ((m.createdAtMillis ?: 0L)).toObj(),
ObjString("modifiedAtMillis") to ((m.modifiedAtMillis ?: 0L)).toObj(),
ObjString("isSymlink") to ObjBool(m.isSymlink),
))
}
@ -478,7 +478,7 @@ private suspend inline fun ScopeFacade.fsGuard(crossinline block: suspend () ->
return try {
block()
} catch (e: AccessDeniedException) {
raiseIllegalOperation(e.reasonDetail ?: "access denied")
raiseError(ObjIllegalOperationException(requireScope(), e.reasonDetail ?: "access denied"))
}
}

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@ -21,10 +21,10 @@ import kotlinx.coroutines.flow.Flow
import net.sergeych.lyng.ModuleScope
import net.sergeych.lyng.Scope
import net.sergeych.lyng.ScopeFacade
import net.sergeych.lyng.requireScope
import net.sergeych.lyng.miniast.*
import net.sergeych.lyng.obj.*
import net.sergeych.lyng.pacman.ImportManager
import net.sergeych.lyng.requireScope
import net.sergeych.lyngio.process.*
import net.sergeych.lyngio.process.security.ProcessAccessDeniedException
import net.sergeych.lyngio.process.security.ProcessAccessPolicy
@ -210,9 +210,9 @@ private suspend inline fun ScopeFacade.processGuard(crossinline block: suspend (
return try {
block()
} catch (e: ProcessAccessDeniedException) {
raiseIllegalOperation(e.reasonDetail ?: "process access denied")
raiseError(ObjIllegalOperationException(requireScope(), e.reasonDetail ?: "process access denied"))
} catch (e: Exception) {
raiseIllegalOperation(e.message ?: "process error")
raiseError(ObjIllegalOperationException(requireScope(), e.message ?: "process error"))
}
}

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@ -1,20 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
internal expect fun consoleFlowDebug(message: String, error: Throwable? = null)

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@ -1,132 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
/**
* ANSI color support level detected for the active console.
*/
enum class ConsoleAnsiLevel {
NONE,
BASIC16,
ANSI256,
TRUECOLOR,
}
/**
* Console geometry in character cells.
*/
data class ConsoleGeometry(
val columns: Int,
val rows: Int,
)
/**
* Input/terminal events emitted by the console runtime.
*/
sealed interface ConsoleEvent {
data class Resize(
val columns: Int,
val rows: Int,
) : ConsoleEvent
data class KeyDown(
val key: String,
val code: String? = null,
val ctrl: Boolean = false,
val alt: Boolean = false,
val shift: Boolean = false,
val meta: Boolean = false,
) : ConsoleEvent
data class KeyUp(
val key: String,
val code: String? = null,
val ctrl: Boolean = false,
val alt: Boolean = false,
val shift: Boolean = false,
val meta: Boolean = false,
) : ConsoleEvent
}
/**
* Pull-based console event source.
*
* `nextEvent(timeoutMs)` returns:
* - next event when available,
* - `null` on timeout,
* - `null` after close.
*/
interface ConsoleEventSource {
suspend fun nextEvent(timeoutMs: Long = 0L): ConsoleEvent?
suspend fun close()
}
private object EmptyConsoleEventSource : ConsoleEventSource {
override suspend fun nextEvent(timeoutMs: Long): ConsoleEvent? = null
override suspend fun close() {
// no-op
}
}
/**
* Platform-independent console runtime surface.
*/
interface LyngConsole {
val isSupported: Boolean
suspend fun isTty(): Boolean
suspend fun geometry(): ConsoleGeometry?
suspend fun ansiLevel(): ConsoleAnsiLevel
suspend fun write(text: String)
suspend fun flush()
fun events(): ConsoleEventSource
/**
* Set terminal raw input mode. Returns true when mode was changed.
*/
suspend fun setRawMode(enabled: Boolean): Boolean
}
object UnsupportedLyngConsole : LyngConsole {
override val isSupported: Boolean = false
override suspend fun isTty(): Boolean = false
override suspend fun geometry(): ConsoleGeometry? = null
override suspend fun ansiLevel(): ConsoleAnsiLevel = ConsoleAnsiLevel.NONE
override suspend fun write(text: String) {
// no-op
}
override suspend fun flush() {
// no-op
}
override fun events(): ConsoleEventSource = EmptyConsoleEventSource
override suspend fun setRawMode(enabled: Boolean): Boolean = false
}

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/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
import com.github.ajalt.mordant.input.KeyboardEvent
import com.github.ajalt.mordant.input.RawModeScope
import com.github.ajalt.mordant.input.enterRawModeOrNull
import com.github.ajalt.mordant.rendering.AnsiLevel
import com.github.ajalt.mordant.terminal.Terminal
import kotlinx.coroutines.*
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.sync.Mutex
import kotlinx.coroutines.sync.withLock
import net.sergeych.lyng.ScriptFlowIsNoMoreCollected
import net.sergeych.mp_tools.globalLaunch
import kotlin.time.Duration.Companion.milliseconds
import kotlin.time.Duration.Companion.seconds
import kotlin.time.TimeSource
/**
* Mordant-backed console runtime implementation.
*/
object MordantLyngConsole : LyngConsole {
private val terminal: Terminal? by lazy {
runCatching { Terminal() }.getOrNull()
}
private val stateMutex = Mutex()
private var rawModeRequested: Boolean = false
private var rawModeScope: RawModeScope? = null
private suspend fun forceRawModeReset(t: Terminal): Boolean = stateMutex.withLock {
if (!rawModeRequested) return@withLock false
runCatching { rawModeScope?.close() }
.onFailure { consoleFlowDebug("forceRawModeReset: close failed", it) }
rawModeScope = null
rawModeRequested = false
if (!t.terminalInfo.inputInteractive) return@withLock false
val reopened = t.enterRawModeOrNull()
rawModeScope = reopened
rawModeRequested = reopened != null
reopened != null
}
override val isSupported: Boolean
get() = terminal != null
override suspend fun isTty(): Boolean {
val t = terminal ?: return false
return t.terminalInfo.outputInteractive
}
override suspend fun geometry(): ConsoleGeometry? {
val t = terminal ?: return null
val size = t.updateSize()
return ConsoleGeometry(size.width, size.height)
}
override suspend fun ansiLevel(): ConsoleAnsiLevel {
val t = terminal ?: return ConsoleAnsiLevel.NONE
return when (t.terminalInfo.ansiLevel) {
AnsiLevel.NONE -> ConsoleAnsiLevel.NONE
AnsiLevel.ANSI16 -> ConsoleAnsiLevel.BASIC16
AnsiLevel.ANSI256 -> ConsoleAnsiLevel.ANSI256
AnsiLevel.TRUECOLOR -> ConsoleAnsiLevel.TRUECOLOR
}
}
override suspend fun write(text: String) {
terminal?.rawPrint(text)
}
override suspend fun flush() {
// Mordant prints via platform streams immediately.
}
override fun events(): ConsoleEventSource {
val t = terminal ?: return object : ConsoleEventSource {
override suspend fun nextEvent(timeoutMs: Long): ConsoleEvent? = null
override suspend fun close() {}
}
val out = Channel<ConsoleEvent>(Channel.UNLIMITED)
val sourceState = Mutex()
var running = true
globalLaunch {
val initialSize = runCatching { t.updateSize() }.getOrNull()
var lastWidth = initialSize?.width ?: 0
var lastHeight = initialSize?.height ?: 0
val startMark = TimeSource.Monotonic.markNow()
var lastHeartbeatMark = startMark
var loops = 0L
var readAttempts = 0L
var readFailures = 0L
var keyEvents = 0L
var resizeEvents = 0L
var rawNullLoops = 0L
var lastKeyMark = startMark
var lastRawRecoveryMark = startMark
fun tryEmitResize(width: Int, height: Int) {
if (width < 1 || height < 1) {
consoleFlowDebug("events: ignored invalid resize width=$width height=$height")
return
}
if (width == lastWidth && height == lastHeight) return
out.trySend(ConsoleEvent.Resize(width, height))
lastWidth = width
lastHeight = height
resizeEvents += 1
}
consoleFlowDebug("events: collector started")
try {
while (currentCoroutineContext().isActive && sourceState.withLock { running }) {
loops += 1
val currentSize = runCatching { t.updateSize() }.getOrNull()
if (currentSize == null) {
delay(150)
continue
}
tryEmitResize(currentSize.width, currentSize.height)
val raw = stateMutex.withLock {
if (!rawModeRequested) {
null
} else {
// Recover raw scope lazily if it was dropped due to an earlier read failure.
if (rawModeScope == null) {
rawModeScope = t.enterRawModeOrNull()
if (rawModeScope == null) {
consoleFlowDebug("events: failed to reopen raw mode scope")
} else {
consoleFlowDebug("events: raw mode scope reopened")
}
}
rawModeScope
}
}
if (raw == null || !t.terminalInfo.inputInteractive) {
rawNullLoops += 1
delay(150)
if (lastHeartbeatMark.elapsedNow() >= 2.seconds) {
consoleFlowDebug(
"events: heartbeat loops=$loops reads=$readAttempts readFailures=$readFailures keys=$keyEvents resize=$resizeEvents rawNullLoops=$rawNullLoops rawRequested=$rawModeRequested inputInteractive=${t.terminalInfo.inputInteractive}"
)
lastHeartbeatMark = TimeSource.Monotonic.markNow()
}
continue
}
readAttempts += 1
val readResult = runCatching { raw.readEventOrNull(150.milliseconds) }
if (readResult.isFailure) {
readFailures += 1
consoleFlowDebug("events: readEventOrNull failed; resetting raw scope", readResult.exceptionOrNull())
// Raw scope became invalid; close and force reopen on next iteration.
stateMutex.withLock {
runCatching { rawModeScope?.close() }
rawModeScope = null
}
delay(50)
continue
}
val ev = readResult.getOrNull()
val resized = runCatching { t.updateSize() }.getOrNull()
if (resized != null) {
tryEmitResize(resized.width, resized.height)
}
when (ev) {
is KeyboardEvent -> {
keyEvents += 1
lastKeyMark = TimeSource.Monotonic.markNow()
out.trySend(
ConsoleEvent.KeyDown(
key = ev.key,
code = null,
ctrl = ev.ctrl,
alt = ev.alt,
shift = ev.shift,
meta = false,
)
)
}
else -> {
// Mouse/other events are ignored in Lyng console v1.
}
}
// Some terminals silently stop delivering keyboard events while raw reads keep succeeding.
// If we had keys before and then prolonged key inactivity, proactively recycle raw scope.
if (keyEvents > 0L &&
lastKeyMark.elapsedNow() >= 4.seconds &&
lastRawRecoveryMark.elapsedNow() >= 4.seconds
) {
if (rawModeRequested) {
consoleFlowDebug("events: key inactivity detected; forcing raw reset")
val resetOk = forceRawModeReset(t)
if (resetOk) {
consoleFlowDebug("events: raw reset succeeded during inactivity recovery")
lastKeyMark = TimeSource.Monotonic.markNow()
} else {
consoleFlowDebug("events: raw reset failed during inactivity recovery")
}
lastRawRecoveryMark = TimeSource.Monotonic.markNow()
}
}
if (lastHeartbeatMark.elapsedNow() >= 2.seconds) {
consoleFlowDebug(
"events: heartbeat loops=$loops reads=$readAttempts readFailures=$readFailures keys=$keyEvents resize=$resizeEvents rawNullLoops=$rawNullLoops rawRequested=$rawModeRequested inputInteractive=${t.terminalInfo.inputInteractive}"
)
lastHeartbeatMark = TimeSource.Monotonic.markNow()
}
}
} catch (e: CancellationException) {
consoleFlowDebug("events: collector cancelled (normal)")
// normal
} catch (e: ScriptFlowIsNoMoreCollected) {
consoleFlowDebug("events: collector stopped by flow consumer (normal)")
// normal
} catch (e: Exception) {
consoleFlowDebug("events: collector loop failed", e)
// terminate event source loop
} finally {
consoleFlowDebug(
"events: collector ended uptime=${startMark.elapsedNow().inWholeMilliseconds}ms loops=$loops reads=$readAttempts readFailures=$readFailures keys=$keyEvents resize=$resizeEvents rawNullLoops=$rawNullLoops rawRequested=$rawModeRequested"
)
out.close()
}
}
return object : ConsoleEventSource {
override suspend fun nextEvent(timeoutMs: Long): ConsoleEvent? {
if (timeoutMs <= 0L) {
return out.receiveCatching().getOrNull()
}
return withTimeoutOrNull(timeoutMs.milliseconds) {
out.receiveCatching().getOrNull()
}
}
override suspend fun close() {
sourceState.withLock { running = false }
out.close()
}
}
}
override suspend fun setRawMode(enabled: Boolean): Boolean {
val t = terminal ?: return false
return stateMutex.withLock {
if (enabled) {
if (!t.terminalInfo.inputInteractive) return@withLock false
if (rawModeRequested) return@withLock false
val scope = t.enterRawModeOrNull() ?: return@withLock false
rawModeScope = scope
rawModeRequested = true
consoleFlowDebug("setRawMode(true): enabled")
true
} else {
val hadRaw = rawModeRequested || rawModeScope != null
rawModeRequested = false
val scope = rawModeScope
rawModeScope = null
runCatching { scope?.close() }
.onFailure { consoleFlowDebug("setRawMode(false): close failed", it) }
consoleFlowDebug("setRawMode(false): disabled hadRaw=$hadRaw")
hadRaw
}
}
}
}

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@ -1,23 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
/**
* Get the system default console implementation.
*/
expect fun getSystemConsole(): LyngConsole

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@ -1,55 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console.security
import net.sergeych.lyngio.fs.security.AccessContext
import net.sergeych.lyngio.fs.security.AccessDecision
import net.sergeych.lyngio.fs.security.Decision
/**
* Primitive console operations for access control decisions.
*/
sealed interface ConsoleAccessOp {
data class WriteText(val length: Int) : ConsoleAccessOp
data object ReadEvents : ConsoleAccessOp
data class SetRawMode(val enabled: Boolean) : ConsoleAccessOp
}
class ConsoleAccessDeniedException(
val op: ConsoleAccessOp,
val reasonDetail: String? = null,
) : IllegalStateException("Console access denied for $op" + (reasonDetail?.let { ": $it" } ?: ""))
/**
* Policy interface that decides whether a specific console operation is allowed.
*/
interface ConsoleAccessPolicy {
suspend fun check(op: ConsoleAccessOp, ctx: AccessContext = AccessContext()): AccessDecision
suspend fun require(op: ConsoleAccessOp, ctx: AccessContext = AccessContext()) {
val res = check(op, ctx)
if (!res.isAllowed()) throw ConsoleAccessDeniedException(op, res.reason)
}
}
object PermitAllConsoleAccessPolicy : ConsoleAccessPolicy {
override suspend fun check(op: ConsoleAccessOp, ctx: AccessContext): AccessDecision =
AccessDecision(Decision.Allow)
}

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@ -1,68 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console.security
import net.sergeych.lyngio.console.*
import net.sergeych.lyngio.fs.security.AccessContext
/**
* Decorator that applies a [ConsoleAccessPolicy] to a delegate [LyngConsole].
*/
class LyngConsoleSecured(
private val delegate: LyngConsole,
private val policy: ConsoleAccessPolicy,
private val ctx: AccessContext = AccessContext(),
) : LyngConsole {
override val isSupported: Boolean
get() = delegate.isSupported
override suspend fun isTty(): Boolean = delegate.isTty()
override suspend fun geometry(): ConsoleGeometry? = delegate.geometry()
override suspend fun ansiLevel(): ConsoleAnsiLevel = delegate.ansiLevel()
override suspend fun write(text: String) {
policy.require(ConsoleAccessOp.WriteText(text.length), ctx)
delegate.write(text)
}
override suspend fun flush() {
delegate.flush()
}
override fun events(): ConsoleEventSource {
val source = delegate.events()
return object : ConsoleEventSource {
override suspend fun nextEvent(timeoutMs: Long): ConsoleEvent? {
policy.require(ConsoleAccessOp.ReadEvents, ctx)
return source.nextEvent(timeoutMs)
}
override suspend fun close() {
source.close()
}
}
}
override suspend fun setRawMode(enabled: Boolean): Boolean {
policy.require(ConsoleAccessOp.SetRawMode(enabled), ctx)
return delegate.setRawMode(enabled)
}
}

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@ -1,28 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.docs
/**
* Console docs are declared in `lyngio/stdlib/lyng/io/console.lyng`.
* Keep this shim for compatibility with reflective loaders.
*/
object ConsoleBuiltinDocs {
fun ensure() {
// No Kotlin-side doc registration: console.lyng is the source of truth.
}
}

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@ -1,20 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
internal actual fun getNativeSystemConsole(): LyngConsole = MordantLyngConsole

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@ -1,22 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
internal actual fun consoleFlowDebug(message: String, error: Throwable?) {
// no-op on JS
}

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@ -1,20 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
actual fun getSystemConsole(): LyngConsole = MordantLyngConsole

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@ -1,46 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
import java.io.File
import java.time.Instant
private val flowDebugLogFilePath: String =
System.getenv("LYNG_CONSOLE_DEBUG_LOG")
?.takeIf { it.isNotBlank() }
?: "/tmp/lyng_console_flow_debug.log"
private val flowDebugLogLock = Any()
internal actual fun consoleFlowDebug(message: String, error: Throwable?) {
runCatching {
val line = buildString {
append(Instant.now().toString())
append(" [console-flow] ")
append(message)
append('\n')
if (error != null) {
append(error.stackTraceToString())
append('\n')
}
}
synchronized(flowDebugLogLock) {
File(flowDebugLogFilePath).appendText(line)
}
}
}

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@ -1,602 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.sync.Mutex
import kotlinx.coroutines.sync.withLock
import kotlinx.coroutines.withTimeoutOrNull
import org.jline.terminal.Attributes
import org.jline.terminal.Terminal
import org.jline.terminal.TerminalBuilder
import org.jline.utils.NonBlockingReader
import java.io.EOFException
import java.io.InterruptedIOException
import java.util.*
import java.util.concurrent.atomic.AtomicBoolean
import java.util.concurrent.atomic.AtomicLong
import java.util.concurrent.atomic.AtomicReference
import kotlin.concurrent.thread
import kotlin.time.Duration.Companion.milliseconds
import kotlin.time.Duration.Companion.seconds
import kotlin.time.TimeSource
/**
* JVM console implementation:
* - output/capabilities/input use a single JLine terminal instance
* to avoid dual-terminal contention.
*/
object JvmLyngConsole : LyngConsole {
private const val DEBUG_REVISION = "jline-r27-no-close-on-vm-iterator-cancel-2026-03-19"
private val codeSourceLocation: String by lazy {
runCatching {
JvmLyngConsole::class.java.protectionDomain?.codeSource?.location?.toString()
}.getOrNull() ?: "<unknown>"
}
private val terminalRef = AtomicReference<Terminal?>(null)
private val terminalInitLock = Any()
private val shutdownHook = Thread(
{
restoreTerminalStateOnShutdown()
},
"lyng-console-shutdown"
).apply { isDaemon = true }
init {
runCatching { Runtime.getRuntime().addShutdownHook(shutdownHook) }
.onFailure { consoleFlowDebug("jline-events: shutdown hook install failed", it) }
}
private fun restoreTerminalStateOnShutdown() {
val term = terminalRef.get() ?: return
runCatching {
term.writer().print("\u001B[?25h")
term.writer().print("\u001B[?1049l")
term.writer().flush()
}.onFailure {
consoleFlowDebug("jline-events: shutdown visual restore failed", it)
}
val saved = if (runCatching { stateMutex.tryLock() }.getOrNull() == true) {
try {
rawModeRequested = false
val s = rawSavedAttributes
rawSavedAttributes = null
s
} finally {
stateMutex.unlock()
}
} else {
null
}
if (saved != null) {
runCatching { term.setAttributes(saved) }
.onFailure { consoleFlowDebug("jline-events: shutdown raw attrs restore failed", it) }
}
}
private fun currentTerminal(): Terminal? {
val existing = terminalRef.get()
if (existing != null) return existing
synchronized(terminalInitLock) {
val already = terminalRef.get()
if (already != null) return already
val created = buildTerminal()
if (created != null) terminalRef.set(created)
return created
}
}
private fun buildTerminal(): Terminal? {
System.setProperty(TerminalBuilder.PROP_DISABLE_DEPRECATED_PROVIDER_WARNING, "true")
val providerOrders = listOf(
"exec",
"exec,ffm",
null,
)
for (providers in providerOrders) {
val terminal = runCatching {
val builder = TerminalBuilder.builder().system(true)
if (providers != null) builder.providers(providers)
builder.build()
}.onFailure {
if (providers != null) {
consoleFlowDebug("jline-events: terminal build failed providers=$providers", it)
} else {
consoleFlowDebug("jline-events: terminal build failed default providers", it)
}
}.getOrNull()
if (terminal != null) {
val termType = terminal.type.lowercase(Locale.getDefault())
if (termType.contains("dumb")) {
consoleFlowDebug("jline-events: terminal rejected providers=${providers ?: "<default>"} type=${terminal.type}")
runCatching { terminal.close() }
continue
}
consoleFlowDebug("jline-events: terminal built providers=${providers ?: "<default>"} type=${terminal.type}")
consoleFlowDebug("jline-events: runtime-marker rev=$DEBUG_REVISION codeSource=$codeSourceLocation")
return terminal
}
}
return null
}
private val stateMutex = Mutex()
private var rawModeRequested: Boolean = false
private var rawSavedAttributes: Attributes? = null
private fun enforceRawReadAttrs(term: Terminal) {
runCatching {
val attrs = term.attributes
attrs.setLocalFlag(Attributes.LocalFlag.ICANON, false)
attrs.setLocalFlag(Attributes.LocalFlag.ECHO, false)
attrs.setControlChar(Attributes.ControlChar.VMIN, 0)
attrs.setControlChar(Attributes.ControlChar.VTIME, 1)
term.setAttributes(attrs)
}.onFailure {
consoleFlowDebug("jline-events: enforceRawReadAttrs failed", it)
}
}
override val isSupported: Boolean
get() = currentTerminal() != null
override suspend fun isTty(): Boolean {
val term = currentTerminal() ?: return false
return !term.type.lowercase(Locale.getDefault()).contains("dumb")
}
override suspend fun geometry(): ConsoleGeometry? {
val term = currentTerminal() ?: return null
val size = runCatching { term.size }.getOrNull() ?: return null
if (size.columns <= 0 || size.rows <= 0) return null
return ConsoleGeometry(size.columns, size.rows)
}
override suspend fun ansiLevel(): ConsoleAnsiLevel {
val colorTerm = (System.getenv("COLORTERM") ?: "").lowercase(Locale.getDefault())
val term = (System.getenv("TERM") ?: "").lowercase(Locale.getDefault())
return when {
colorTerm.contains("truecolor") || colorTerm.contains("24bit") -> ConsoleAnsiLevel.TRUECOLOR
term.contains("256color") -> ConsoleAnsiLevel.ANSI256
term.isNotBlank() && term != "dumb" -> ConsoleAnsiLevel.BASIC16
else -> ConsoleAnsiLevel.NONE
}
}
override suspend fun write(text: String) {
val term = currentTerminal() ?: return
term.writer().print(text)
}
override suspend fun flush() {
val term = currentTerminal() ?: return
term.writer().flush()
}
override fun events(): ConsoleEventSource {
var activeTerm = currentTerminal() ?: return object : ConsoleEventSource {
override suspend fun nextEvent(timeoutMs: Long): ConsoleEvent? = null
override suspend fun close() {}
}
val out = Channel<ConsoleEvent>(Channel.UNLIMITED)
val keyEvents = AtomicLong(0L)
val keyCodesRead = AtomicLong(0L)
val keySendFailures = AtomicLong(0L)
val readFailures = AtomicLong(0L)
val readerRecoveries = AtomicLong(0L)
var lastHeartbeat = TimeSource.Monotonic.markNow()
val keyLoopRunning = AtomicBoolean(true)
val keyLoopCount = AtomicLong(0L)
val keyReadStartNs = AtomicLong(0L)
val keyReadEndNs = AtomicLong(0L)
val lastKeyReadNs = AtomicLong(System.nanoTime())
val lastRecoveryNs = AtomicLong(0L)
val recoveryRequested = AtomicBoolean(false)
val running = AtomicBoolean(true)
var winchHandler: Terminal.SignalHandler? = null
var reader = activeTerm.reader()
var keyThread: Thread? = null
var heartbeatThread: Thread? = null
val resizeEmitMutex = Any()
var lastResizeCols = Int.MIN_VALUE
var lastResizeRows = Int.MIN_VALUE
fun emitResize() {
val size = runCatching { activeTerm.size }.getOrNull() ?: return
val cols = size.columns
val rows = size.rows
if (cols < 1 || rows < 1) {
consoleFlowDebug("jline-events: ignored invalid resize columns=$cols rows=$rows")
return
}
val shouldEmit = synchronized(resizeEmitMutex) {
if (cols == lastResizeCols && rows == lastResizeRows) {
false
} else {
lastResizeCols = cols
lastResizeRows = rows
true
}
}
if (!shouldEmit) return
out.trySend(ConsoleEvent.Resize(cols, rows))
}
fun cleanup() {
running.set(false)
keyLoopRunning.set(false)
runCatching { reader.shutdown() }
runCatching {
if (winchHandler != null) {
activeTerm.handle(Terminal.Signal.WINCH, winchHandler)
}
}.onFailure {
consoleFlowDebug("jline-events: WINCH handler restore failed", it)
}
runCatching { keyThread?.interrupt() }
runCatching { heartbeatThread?.interrupt() }
out.close()
}
fun installWinchHandler() {
winchHandler = runCatching {
activeTerm.handle(Terminal.Signal.WINCH) {
emitResize()
}
}.onFailure {
consoleFlowDebug("jline-events: WINCH handler install failed", it)
}.getOrNull()
}
fun tryRebuildTerminal(): Boolean {
val oldTerm = activeTerm
val rebuilt = runCatching {
synchronized(terminalInitLock) {
if (terminalRef.get() === oldTerm) {
terminalRef.set(null)
}
}
runCatching { oldTerm.close() }
.onFailure { consoleFlowDebug("jline-events: old terminal close failed during rebuild", it) }
currentTerminal()
}.onFailure {
consoleFlowDebug("jline-events: terminal rebuild failed", it)
}.getOrNull() ?: return false
if (rebuilt === oldTerm) {
consoleFlowDebug("jline-events: terminal rebuild returned same terminal instance")
return false
}
activeTerm = rebuilt
reader = activeTerm.reader()
val rawRequestedNow = runCatching { stateMutex.tryLock() }.getOrNull() == true && try {
rawModeRequested
} finally {
stateMutex.unlock()
}
if (rawRequestedNow) {
val saved = runCatching { activeTerm.enterRawMode() }.getOrNull()
if (saved != null) {
enforceRawReadAttrs(activeTerm)
if (runCatching { stateMutex.tryLock() }.getOrNull() == true) {
try {
rawSavedAttributes = saved
} finally {
stateMutex.unlock()
}
}
} else {
consoleFlowDebug("jline-events: terminal rebuild succeeded but enterRawMode failed")
}
}
installWinchHandler()
emitResize()
consoleFlowDebug("jline-events: terminal rebuilt and rebound")
return true
}
consoleFlowDebug("jline-events: collector started rev=$DEBUG_REVISION")
emitResize()
installWinchHandler()
keyThread = thread(start = true, isDaemon = true, name = "lyng-jline-key-reader") {
consoleFlowDebug("jline-events: key-reader thread started")
consoleFlowDebug("jline-events: using NonBlockingReader key path")
while (running.get() && keyLoopRunning.get()) {
keyLoopCount.incrementAndGet()
try {
if (recoveryRequested.compareAndSet(true, false)) {
val prevReader = reader
runCatching { prevReader.shutdown() }
.onFailure { consoleFlowDebug("jline-events: reader shutdown failed during recovery", it) }
reader = activeTerm.reader()
if (reader === prevReader) {
consoleFlowDebug("jline-events: reader recovery no-op oldReader=${System.identityHashCode(prevReader)} newReader=${System.identityHashCode(reader)} -> forcing terminal rebuild")
if (!tryRebuildTerminal()) {
consoleFlowDebug("jline-events: forced terminal rebuild did not produce a new reader")
}
} else {
consoleFlowDebug("jline-events: reader recovered oldReader=${System.identityHashCode(prevReader)} newReader=${System.identityHashCode(reader)}")
}
readerRecoveries.incrementAndGet()
lastRecoveryNs.set(System.nanoTime())
}
val isRaw = runCatching { stateMutex.tryLock() }.getOrNull() == true && try {
rawModeRequested
} finally {
stateMutex.unlock()
}
if (!isRaw) {
Thread.sleep(20)
continue
}
keyReadStartNs.set(System.nanoTime())
val event = readKeyEvent(reader)
keyReadEndNs.set(System.nanoTime())
if (event == null) {
continue
}
keyCodesRead.incrementAndGet()
lastKeyReadNs.set(System.nanoTime())
if (out.trySend(event).isSuccess) {
keyEvents.incrementAndGet()
} else {
keySendFailures.incrementAndGet()
}
} catch (e: InterruptedException) {
// Keep input alive if this is a transient interrupt while still running.
if (!running.get() || !keyLoopRunning.get()) break
recoveryRequested.set(true)
consoleFlowDebug("jline-events: key-reader interrupted; scheduling reader recovery", e)
Thread.interrupted()
continue
} catch (e: InterruptedIOException) {
// Common during reader shutdown/rebind. Recover silently and keep input flowing.
if (!running.get() || !keyLoopRunning.get()) break
recoveryRequested.set(true)
consoleFlowDebug("jline-events: read interrupted; scheduling reader recovery", e)
try {
Thread.sleep(10)
} catch (ie: InterruptedException) {
if (!running.get() || !keyLoopRunning.get()) break
recoveryRequested.set(true)
consoleFlowDebug("jline-events: interrupted during recovery backoff; continuing", ie)
Thread.interrupted()
}
} catch (e: EOFException) {
// EOF from reader should trigger rebind/rebuild rather than ending input stream.
if (!running.get() || !keyLoopRunning.get()) break
recoveryRequested.set(true)
consoleFlowDebug("jline-events: reader EOF; scheduling reader recovery", e)
try {
Thread.sleep(20)
} catch (ie: InterruptedException) {
if (!running.get() || !keyLoopRunning.get()) break
recoveryRequested.set(true)
consoleFlowDebug("jline-events: interrupted during EOF backoff; continuing", ie)
Thread.interrupted()
}
} catch (e: Throwable) {
readFailures.incrementAndGet()
recoveryRequested.set(true)
consoleFlowDebug("jline-events: blocking read failed", e)
try {
Thread.sleep(50)
} catch (ie: InterruptedException) {
if (!running.get() || !keyLoopRunning.get()) break
recoveryRequested.set(true)
consoleFlowDebug("jline-events: interrupted during error backoff; continuing", ie)
Thread.interrupted()
}
}
}
consoleFlowDebug(
"jline-events: key-reader thread stopped running=${running.get()} keyLoopRunning=${keyLoopRunning.get()} loops=${keyLoopCount.get()} keys=${keyEvents.get()} readFailures=${readFailures.get()}"
)
}
heartbeatThread = thread(start = true, isDaemon = true, name = "lyng-jline-heartbeat") {
while (running.get()) {
if (lastHeartbeat.elapsedNow() >= 2.seconds) {
val requested = runCatching { stateMutex.tryLock() }.getOrNull() == true && try {
rawModeRequested
} finally {
stateMutex.unlock()
}
val readStartNs = keyReadStartNs.get()
val readEndNs = keyReadEndNs.get()
val lastKeyNs = lastKeyReadNs.get()
val idleMs = if (lastKeyNs > 0L) (System.nanoTime() - lastKeyNs) / 1_000_000L else 0L
val readBlockedMs = if (readStartNs > 0L && readEndNs < readStartNs) {
(System.nanoTime() - readStartNs) / 1_000_000L
} else 0L
val streamIdle = requested && keyCodesRead.get() > 0L && idleMs >= 1400L
val readStalled = requested && readBlockedMs >= 1600L
if (streamIdle || readStalled) {
val sinceRecoveryMs = (System.nanoTime() - lastRecoveryNs.get()) / 1_000_000L
if (sinceRecoveryMs >= 1200L) {
recoveryRequested.set(true)
if (readStalled) {
consoleFlowDebug("jline-events: key read blocked ${readBlockedMs}ms; scheduling reader recovery")
} else {
consoleFlowDebug("jline-events: key stream idle ${idleMs}ms; scheduling reader recovery")
}
}
}
consoleFlowDebug(
"jline-events: heartbeat keyCodes=${keyCodesRead.get()} keysSent=${keyEvents.get()} sendFailures=${keySendFailures.get()} readFailures=${readFailures.get()} recoveries=${readerRecoveries.get()} rawRequested=$requested keyLoop=${keyLoopCount.get()} readBlockedMs=$readBlockedMs keyIdleMs=$idleMs keyPath=reader"
)
lastHeartbeat = TimeSource.Monotonic.markNow()
}
try {
Thread.sleep(200)
} catch (_: InterruptedException) {
break
}
}
}
return object : ConsoleEventSource {
override suspend fun nextEvent(timeoutMs: Long): ConsoleEvent? {
if (!running.get()) return null
if (timeoutMs <= 0L) {
return out.receiveCatching().getOrNull()
}
return withTimeoutOrNull(timeoutMs.milliseconds) {
out.receiveCatching().getOrNull()
}
}
override suspend fun close() {
consoleFlowDebug("jline-events: collector close requested", Throwable("collector close caller"))
cleanup()
consoleFlowDebug(
"jline-events: collector ended keys=${keyEvents.get()} readFailures=${readFailures.get()}"
)
}
}
}
override suspend fun setRawMode(enabled: Boolean): Boolean {
val term = currentTerminal() ?: return false
return stateMutex.withLock {
if (enabled) {
if (rawModeRequested) return@withLock false
val saved = runCatching { term.enterRawMode() }.getOrNull() ?: return@withLock false
enforceRawReadAttrs(term)
rawSavedAttributes = saved
rawModeRequested = true
consoleFlowDebug("jline-events: setRawMode(true): enabled")
true
} else {
val hadRaw = rawModeRequested
rawModeRequested = false
val saved = rawSavedAttributes
rawSavedAttributes = null
runCatching {
if (saved != null) term.setAttributes(saved)
}.onFailure {
consoleFlowDebug("jline-events: setRawMode(false): restore failed", it)
}
consoleFlowDebug("jline-events: setRawMode(false): disabled hadRaw=$hadRaw")
hadRaw
}
}
}
private fun readKeyEvent(reader: NonBlockingReader): ConsoleEvent.KeyDown? {
val code = reader.read(120L)
if (code == NonBlockingReader.READ_EXPIRED) return null
if (code < 0) throw EOFException("non-blocking reader returned EOF")
return decodeKey(code) { timeout -> readNextCode(reader, timeout) }
}
private fun decodeKey(code: Int, nextCode: (Long) -> Int?): ConsoleEvent.KeyDown {
if (code == 27) {
val next = nextCode(25L)
if (next == null || next < 0) {
return key("Escape")
}
if (next == '['.code || next == 'O'.code) {
val sb = StringBuilder()
sb.append(next.toChar())
var i = 0
while (i < 6) {
val c = nextCode(25L) ?: break
if (c < 0) break
sb.append(c.toChar())
if (c.toChar().isLetter() || c == '~'.code) break
i += 1
}
return keyFromAnsiSequence(sb.toString()) ?: key("Escape")
}
// Alt+key
val base = decodePlainKey(next)
return ConsoleEvent.KeyDown(
key = base.key,
code = base.code,
ctrl = base.ctrl,
alt = true,
shift = base.shift,
meta = false
)
}
return decodePlainKey(code)
}
private fun readNextCode(reader: NonBlockingReader, timeoutMs: Long): Int? {
val c = reader.read(timeoutMs)
if (c == NonBlockingReader.READ_EXPIRED) return null
if (c < 0) throw EOFException("non-blocking reader returned EOF while decoding key sequence")
return c
}
private fun decodePlainKey(code: Int): ConsoleEvent.KeyDown = when (code) {
3 -> key("c", ctrl = true)
9 -> key("Tab")
10, 13 -> key("Enter")
127, 8 -> key("Backspace")
32 -> key(" ")
else -> {
if (code in 1..26) {
val ch = ('a'.code + code - 1).toChar().toString()
key(ch, ctrl = true)
} else {
val ch = code.toChar().toString()
key(ch, shift = ch.length == 1 && ch[0].isLetter() && ch[0].isUpperCase())
}
}
}
private fun keyFromAnsiSequence(seq: String): ConsoleEvent.KeyDown? = when (seq) {
"[A", "OA" -> key("ArrowUp")
"[B", "OB" -> key("ArrowDown")
"[C", "OC" -> key("ArrowRight")
"[D", "OD" -> key("ArrowLeft")
"[H", "OH" -> key("Home")
"[F", "OF" -> key("End")
"[2~" -> key("Insert")
"[3~" -> key("Delete")
"[5~" -> key("PageUp")
"[6~" -> key("PageDown")
else -> null
}
private fun key(
value: String,
ctrl: Boolean = false,
alt: Boolean = false,
shift: Boolean = false,
): ConsoleEvent.KeyDown {
require(value.isNotEmpty()) { "ConsoleEvent.KeyDown.key must never be empty" }
return ConsoleEvent.KeyDown(
key = value,
code = null,
ctrl = ctrl,
alt = alt,
shift = shift,
meta = false
)
}
}

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@ -1,20 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
actual fun getSystemConsole(): LyngConsole = JvmLyngConsole

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@ -1,115 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyng.io.console
import kotlinx.coroutines.runBlocking
import net.sergeych.lyng.ExecutionError
import net.sergeych.lyng.Scope
import net.sergeych.lyng.obj.ObjBool
import net.sergeych.lyng.obj.ObjIllegalOperationException
import net.sergeych.lyngio.console.security.ConsoleAccessOp
import net.sergeych.lyngio.console.security.ConsoleAccessPolicy
import net.sergeych.lyngio.console.security.PermitAllConsoleAccessPolicy
import net.sergeych.lyngio.fs.security.AccessContext
import net.sergeych.lyngio.fs.security.AccessDecision
import net.sergeych.lyngio.fs.security.Decision
import kotlin.test.Test
import kotlin.test.assertFalse
import kotlin.test.assertIs
import kotlin.test.assertTrue
class LyngConsoleModuleTest {
private fun newScope(): Scope = Scope.new()
@Test
fun installIsIdempotent() = runBlocking {
val scope = newScope()
assertTrue(createConsoleModule(PermitAllConsoleAccessPolicy, scope))
assertFalse(createConsoleModule(PermitAllConsoleAccessPolicy, scope))
}
@Test
fun moduleSmokeScript() = runBlocking {
val scope = newScope()
createConsoleModule(PermitAllConsoleAccessPolicy, scope)
val code = """
import lyng.io.console
import lyng.stdlib
val d = Console.details()
assert(d.supported is Bool)
assert(d.isTty is Bool)
assert(d.ansiLevel is ConsoleAnsiLevel)
val g = Console.geometry()
if (g != null) {
assert(g.columns is Int)
assert(g.rows is Int)
assert(g.columns > 0)
assert(g.rows > 0)
}
assert(Console.events() is Iterable)
Console.write("")
Console.flush()
Console.home()
Console.clear()
Console.moveTo(1, 1)
Console.clearLine()
Console.enterAltScreen()
Console.leaveAltScreen()
Console.setCursorVisible(true)
val changed = Console.setRawMode(false)
assert(changed is Bool)
true
""".trimIndent()
val result = scope.eval(code)
assertIs<ObjBool>(result)
assertTrue(result.value)
}
@Test
fun denyWritePolicyMapsToIllegalOperation() {
runBlocking {
val denyWritePolicy = object : ConsoleAccessPolicy {
override suspend fun check(op: ConsoleAccessOp, ctx: AccessContext): AccessDecision = when (op) {
is ConsoleAccessOp.WriteText -> AccessDecision(Decision.Deny, "denied by test policy")
else -> AccessDecision(Decision.Allow)
}
}
val scope = newScope()
createConsoleModule(denyWritePolicy, scope)
val error = kotlin.test.assertFailsWith<ExecutionError> {
scope.eval(
"""
import lyng.io.console
Console.write("x")
""".trimIndent()
)
}
assertIs<ObjIllegalOperationException>(error.errorObject)
}
}
}

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@ -1,77 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
import kotlinx.coroutines.runBlocking
import kotlin.test.Test
import kotlin.test.assertNotNull
import kotlin.test.assertTrue
class MordantLyngConsoleJvmTest {
@Test
fun basicCapabilitiesSmoke() = runBlocking {
val console = getSystemConsole()
assertNotNull(console)
// Must be callable in any environment (interactive or redirected output).
val tty = console.isTty()
val ansi = console.ansiLevel()
val geometry = console.geometry()
if (geometry != null) {
assertTrue(geometry.columns > 0, "columns must be positive when geometry is present")
assertTrue(geometry.rows > 0, "rows must be positive when geometry is present")
}
// no-op smoke checks
console.write("")
console.flush()
// Keep values live so compiler doesn't optimize away calls in future changes
assertNotNull(ansi)
assertTrue(tty || !tty)
}
@Test
fun setRawModeContract() = runBlocking {
val console = getSystemConsole()
val enabledChanged = console.setRawMode(true)
val disabledChanged = console.setRawMode(false)
// If enabling changed state, disabling should also change it back.
if (enabledChanged) {
assertTrue(disabledChanged, "raw mode disable should report changed after enable")
}
}
@Test
fun eventsSourceDoesNotCrash() = runBlocking {
val console = getSystemConsole()
val source = console.events()
val event = source.nextEvent(350)
source.close()
// Any event kind is acceptable in this smoke test; null is also valid when idle.
if (event != null) {
assertTrue(
event is ConsoleEvent.Resize || event is ConsoleEvent.KeyDown || event is ConsoleEvent.KeyUp,
"unexpected event type: ${event::class.simpleName}"
)
}
}
}

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@ -1,243 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
import kotlinx.cinterop.*
import kotlinx.coroutines.delay
import kotlinx.coroutines.sync.Mutex
import kotlinx.coroutines.sync.withLock
import platform.posix.*
import kotlin.time.Duration.Companion.milliseconds
import kotlin.time.TimeSource
internal actual fun getNativeSystemConsole(): LyngConsole = LinuxPosixLyngConsole
internal object LinuxConsoleKeyDecoder {
fun decode(firstCode: Int, nextCode: (Long) -> Int?): ConsoleEvent.KeyDown {
if (firstCode == 27) {
val next = nextCode(25L)
if (next == null || next < 0) return key("Escape")
if (next == '['.code || next == 'O'.code) {
val sb = StringBuilder()
sb.append(next.toChar())
var i = 0
while (i < 8) {
val c = nextCode(25L) ?: break
if (c < 0) break
sb.append(c.toChar())
if (c.toChar().isLetter() || c == '~'.code) break
i += 1
}
return keyFromAnsiSequence(sb.toString()) ?: key("Escape")
}
val base = decodePlain(next)
return ConsoleEvent.KeyDown(
key = base.key,
code = base.code,
ctrl = base.ctrl,
alt = true,
shift = base.shift,
meta = false,
)
}
return decodePlain(firstCode)
}
private fun decodePlain(code: Int): ConsoleEvent.KeyDown {
if (code == 3) return ConsoleEvent.KeyDown(key = "c", ctrl = true)
if (code == 9) return key("Tab")
if (code == 10 || code == 13) return key("Enter")
if (code == 32) return key(" ")
if (code == 127 || code == 8) return key("Backspace")
val c = code.toChar()
return if (c in 'A'..'Z') {
ConsoleEvent.KeyDown(key = c.toString(), shift = true)
} else {
key(c.toString())
}
}
private fun keyFromAnsiSequence(seq: String): ConsoleEvent.KeyDown? {
val letter = seq.lastOrNull() ?: return null
val shift = seq.contains(";2")
val alt = seq.contains(";3")
val ctrl = seq.contains(";5")
val key = when (letter) {
'A' -> "ArrowUp"
'B' -> "ArrowDown"
'C' -> "ArrowRight"
'D' -> "ArrowLeft"
'H' -> "Home"
'F' -> "End"
else -> return null
}
return ConsoleEvent.KeyDown(key = key, ctrl = ctrl, alt = alt, shift = shift)
}
private fun key(name: String): ConsoleEvent.KeyDown = ConsoleEvent.KeyDown(key = name)
}
@OptIn(ExperimentalForeignApi::class)
object LinuxPosixLyngConsole : LyngConsole {
private val stateMutex = Mutex()
private var rawModeRequested = false
private var savedAttrsBlob: ByteArray? = null
override val isSupported: Boolean
get() = isatty(STDIN_FILENO) == 1 && isatty(STDOUT_FILENO) == 1
override suspend fun isTty(): Boolean = isSupported
override suspend fun geometry(): ConsoleGeometry? = readGeometry()
override suspend fun ansiLevel(): ConsoleAnsiLevel {
val colorTerm = (getenv("COLORTERM")?.toKString() ?: "").lowercase()
val term = (getenv("TERM")?.toKString() ?: "").lowercase()
return when {
colorTerm.contains("truecolor") || colorTerm.contains("24bit") -> ConsoleAnsiLevel.TRUECOLOR
term.contains("256color") -> ConsoleAnsiLevel.ANSI256
term.isNotBlank() && term != "dumb" -> ConsoleAnsiLevel.BASIC16
else -> ConsoleAnsiLevel.NONE
}
}
override suspend fun write(text: String) {
kotlin.io.print(text)
}
override suspend fun flush() {
fflush(null)
}
override fun events(): ConsoleEventSource {
if (!isSupported) {
return object : ConsoleEventSource {
override suspend fun nextEvent(timeoutMs: Long): ConsoleEvent? = null
override suspend fun close() {}
}
}
return object : ConsoleEventSource {
var closed = false
var lastGeometry: ConsoleGeometry? = null
override suspend fun nextEvent(timeoutMs: Long): ConsoleEvent? {
if (closed) return null
val started = TimeSource.Monotonic.markNow()
while (!closed) {
val g = readGeometry()
if (g != null && (lastGeometry == null || g.columns != lastGeometry?.columns || g.rows != lastGeometry?.rows)) {
lastGeometry = g
return ConsoleEvent.Resize(g.columns, g.rows)
}
val rawRequested = stateMutex.withLock { rawModeRequested }
val pollSliceMs = if (timeoutMs <= 0L) 250L else minOf(250L, timeoutMs)
if (rawRequested) {
val ev = readKeyEvent(pollSliceMs)
if (ev != null) return ev
} else {
delay(25)
}
if (timeoutMs > 0L && started.elapsedNow() >= timeoutMs.milliseconds) {
return null
}
}
return null
}
override suspend fun close() {
closed = true
}
}
}
override suspend fun setRawMode(enabled: Boolean): Boolean {
if (!isSupported) return false
return stateMutex.withLock {
if (enabled) {
if (rawModeRequested) return@withLock false
memScoped {
val attrs = alloc<termios>()
if (tcgetattr(STDIN_FILENO, attrs.ptr) != 0) return@withLock false
val saved = ByteArray(sizeOf<termios>().toInt())
saved.usePinned { pinned ->
memcpy(pinned.addressOf(0), attrs.ptr, sizeOf<termios>().convert())
}
savedAttrsBlob = saved
attrs.c_lflag = attrs.c_lflag and ICANON.convert<UInt>().inv() and ECHO.convert<UInt>().inv()
attrs.c_iflag = attrs.c_iflag and IXON.convert<UInt>().inv() and ISTRIP.convert<UInt>().inv()
attrs.c_oflag = attrs.c_oflag and OPOST.convert<UInt>().inv()
if (tcsetattr(STDIN_FILENO, TCSANOW, attrs.ptr) != 0) return@withLock false
}
rawModeRequested = true
true
} else {
val hadRaw = rawModeRequested
rawModeRequested = false
val saved = savedAttrsBlob
if (saved != null) {
memScoped {
val attrs = alloc<termios>()
saved.usePinned { pinned ->
memcpy(attrs.ptr, pinned.addressOf(0), sizeOf<termios>().convert())
}
tcsetattr(STDIN_FILENO, TCSANOW, attrs.ptr)
}
}
hadRaw
}
}
}
private fun readGeometry(): ConsoleGeometry? = memScoped {
val ws = alloc<winsize>()
if (ioctl(STDOUT_FILENO, TIOCGWINSZ.convert(), ws.ptr) != 0) return null
val cols = ws.ws_col.toInt()
val rows = ws.ws_row.toInt()
if (cols <= 0 || rows <= 0) return null
ConsoleGeometry(columns = cols, rows = rows)
}
private fun readByte(timeoutMs: Long): Int? = memScoped {
val pfd = alloc<pollfd>()
pfd.fd = STDIN_FILENO
pfd.events = POLLIN.convert()
pfd.revents = 0
val ready = poll(pfd.ptr, 1.convert(), timeoutMs.toInt())
if (ready <= 0) return null
val buf = ByteArray(1)
val count = buf.usePinned { pinned ->
read(STDIN_FILENO, pinned.addressOf(0), 1.convert())
}
if (count <= 0) return null
val b = buf[0].toInt()
if (b < 0) b + 256 else b
}
private fun readKeyEvent(timeoutMs: Long): ConsoleEvent.KeyDown? {
val first = readByte(timeoutMs) ?: return null
return LinuxConsoleKeyDecoder.decode(first) { timeout ->
readByte(timeout)
}
}
}

View File

@ -1,67 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertFalse
import kotlin.test.assertTrue
class LinuxPosixLyngConsoleTest {
private fun decode(vararg bytes: Int): ConsoleEvent.KeyDown {
var i = 1
return LinuxConsoleKeyDecoder.decode(bytes[0]) { _ ->
if (i >= bytes.size) null else bytes[i++]
}
}
@Test
fun decodesArrowLeft() {
val ev = decode(27, '['.code, 'D'.code)
assertEquals("ArrowLeft", ev.key)
assertFalse(ev.ctrl)
}
@Test
fun decodesArrowRightCtrlModifier() {
val ev = decode(27, '['.code, '1'.code, ';'.code, '5'.code, 'C'.code)
assertEquals("ArrowRight", ev.key)
assertTrue(ev.ctrl)
}
@Test
fun decodesEscape() {
val ev = decode(27)
assertEquals("Escape", ev.key)
}
@Test
fun decodesCtrlC() {
val ev = decode(3)
assertEquals("c", ev.key)
assertTrue(ev.ctrl)
}
@Test
fun decodesUppercaseShift() {
val ev = decode('A'.code)
assertEquals("A", ev.key)
assertTrue(ev.shift)
}
}

View File

@ -1,20 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
internal actual fun getNativeSystemConsole(): LyngConsole = MordantLyngConsole

View File

@ -1,20 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
internal actual fun getNativeSystemConsole(): LyngConsole = MordantLyngConsole

View File

@ -1,22 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
internal actual fun consoleFlowDebug(message: String, error: Throwable?) {
// no-op on Native
}

View File

@ -1,22 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
actual fun getSystemConsole(): LyngConsole = getNativeSystemConsole()
internal expect fun getNativeSystemConsole(): LyngConsole

View File

@ -1,22 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyngio.console
internal actual fun consoleFlowDebug(message: String, error: Throwable?) {
// no-op on wasmJs
}

View File

@ -1,157 +0,0 @@
package lyng.io.console
/* Console event kinds used by `ConsoleEvent.type`. */
enum ConsoleEventType {
UNKNOWN,
RESIZE,
KEY_DOWN,
KEY_UP
}
/* Normalized key codes used by `ConsoleKeyEvent.code`. */
enum ConsoleKeyCode {
UNKNOWN,
CHARACTER,
ARROW_UP,
ARROW_DOWN,
ARROW_LEFT,
ARROW_RIGHT,
HOME,
END,
INSERT,
DELETE,
PAGE_UP,
PAGE_DOWN,
ESCAPE,
ENTER,
TAB,
BACKSPACE,
SPACE
}
/* Detected ANSI terminal capability level. */
enum ConsoleAnsiLevel {
NONE,
BASIC16,
ANSI256,
TRUECOLOR
}
/* Base class for console events. */
extern class ConsoleEvent {
/* Event kind for stable matching/switching. */
val type: ConsoleEventType
}
/* Terminal resize event. */
extern class ConsoleResizeEvent : ConsoleEvent {
/* Current terminal width in character cells. */
val columns: Int
/* Current terminal height in character cells. */
val rows: Int
}
/* Keyboard event. */
extern class ConsoleKeyEvent : ConsoleEvent {
/*
Logical key name normalized for app-level handling, for example:
"a", "A", "ArrowLeft", "Escape", "Enter".
*/
val key: String
/* Normalized key code enum for robust matching independent of backend specifics. */
val code: ConsoleKeyCode
/*
Optional backend-specific raw identifier (if available).
Not guaranteed to be present or stable across platforms.
*/
val codeName: String?
/* True when Ctrl was pressed during the key event. */
val ctrl: Bool
/* True when Alt/Option was pressed during the key event. */
val alt: Bool
/* True when Shift was pressed during the key event. */
val shift: Bool
/* True when Meta/Super/Command was pressed during the key event. */
val meta: Bool
}
/* Pull iterator over console events. */
extern class ConsoleEventIterator : Iterator<ConsoleEvent> {
/* Whether another event is currently available from the stream. */
override fun hasNext(): Bool
/* Returns next event or throws iteration-finished when exhausted/cancelled. */
override fun next(): ConsoleEvent
/* Stops this iterator. The underlying console service remains managed by runtime. */
override fun cancelIteration(): void
}
/* Endless iterable console event stream. */
extern class ConsoleEventStream : Iterable<ConsoleEvent> {
/* Creates a fresh event iterator bound to the current console input stream. */
override fun iterator(): ConsoleEventIterator
}
/* Terminal geometry in character cells. */
extern class ConsoleGeometry {
val columns: Int
val rows: Int
}
/* Snapshot of console support/capabilities. */
extern class ConsoleDetails {
/* True when current runtime has console control implementation. */
val supported: Bool
/* True when output/input are attached to an interactive terminal. */
val isTty: Bool
/* Detected terminal color capability level. */
val ansiLevel: ConsoleAnsiLevel
/* Current terminal size if available, otherwise null. */
val geometry: ConsoleGeometry?
}
/* Console API singleton object. */
extern object Console {
/* Returns true when console control API is implemented in this runtime. */
fun isSupported(): Bool
/* Returns true when process is attached to interactive TTY. */
fun isTty(): Bool
/* Returns detected color capability level. */
fun ansiLevel(): ConsoleAnsiLevel
/* Returns current terminal geometry, or null when unavailable. */
fun geometry(): ConsoleGeometry?
/* Returns combined capability snapshot in one call. */
fun details(): ConsoleDetails
/* Writes raw text to console output buffer (no implicit newline). */
fun write(text: String): void
/* Flushes pending console output. Call after batched writes. */
fun flush(): void
/* Moves cursor to home position (row 1, column 1). */
fun home(): void
/* Clears visible screen buffer. Cursor position is backend-dependent after clear. */
fun clear(): void
/* Moves cursor to 1-based row/column. Values outside viewport are backend-defined. */
fun moveTo(row: Int, column: Int): void
/* Clears current line content. Cursor stays on the same line. */
fun clearLine(): void
/* Switches terminal into alternate screen buffer (useful for TUIs). */
fun enterAltScreen(): void
/* Returns from alternate screen buffer to the normal terminal screen. */
fun leaveAltScreen(): void
/* Shows or hides the cursor. Prefer restoring visibility in finally blocks. */
fun setCursorVisible(visible: Bool): void
/*
Returns endless event stream (resize + key events).
Typical usage is consuming in a launched loop.
*/
fun events(): ConsoleEventStream
/*
Enables/disables raw keyboard mode.
Returns true when state was actually changed.
*/
fun setRawMode(enabled: Bool): Bool
}

View File

@ -21,7 +21,7 @@ import org.jetbrains.kotlin.gradle.ExperimentalWasmDsl
import org.jetbrains.kotlin.gradle.dsl.JvmTarget
group = "net.sergeych"
version = "1.5.0"
version = "1.5.0-SNAPSHOT"
// Removed legacy buildscript classpath declarations; plugins are applied via the plugins DSL below

View File

@ -1,22 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyng.bytecode
internal actual fun vmIterDebug(message: String, error: Throwable?) {
// no-op on Android
}

View File

@ -220,7 +220,6 @@ data class ParsedArgument(
val list: List<Obj>,
val tailBlockMode: Boolean = false,
val named: Map<String, Obj> = emptyMap(),
val explicitTypeArgs: List<TypeDecl> = emptyList(),
) : List<Obj> by list {
constructor(vararg values: Obj) : this(values.toList())

View File

@ -33,7 +33,6 @@ class ClassInstanceFieldDeclStatement(
val isMutable: Boolean,
val visibility: Visibility,
val writeVisibility: Visibility?,
val typeDecl: TypeDecl?,
val isAbstract: Boolean,
val isClosed: Boolean,
val isOverride: Boolean,

View File

@ -36,19 +36,10 @@ class BytecodeClosureScope(
val desired = preferredThisType?.let { typeName ->
callScope.thisVariants.firstOrNull { it.objClass.className == typeName }
}
val primaryThis = when {
callScope is ApplyScope -> callScope.thisObj
desired != null -> desired
else -> closureScope.thisObj
}
val merged = ArrayList<Obj>(callScope.thisVariants.size + closureScope.thisVariants.size + 3)
val primaryThis = closureScope.thisObj
val merged = ArrayList<Obj>(callScope.thisVariants.size + closureScope.thisVariants.size + 1)
desired?.let { merged.add(it) }
merged.add(callScope.thisObj)
merged.addAll(callScope.thisVariants)
if (callScope is ApplyScope) {
merged.add(callScope.applied.thisObj)
merged.addAll(callScope.applied.thisVariants)
}
merged.addAll(closureScope.thisVariants)
setThisVariants(primaryThis, merged)
this.currentClassCtx = closureScope.currentClassCtx ?: callScope.currentClassCtx
@ -56,20 +47,10 @@ class BytecodeClosureScope(
}
class ApplyScope(val callScope: Scope, val applied: Scope) :
Scope(applied, callScope.args, callScope.pos, callScope.thisObj) {
init {
// Merge applied receiver variants with the caller variants so qualified this@Type
// can see both the applied receiver and outer receivers.
val merged = ArrayList<Obj>(applied.thisVariants.size + callScope.thisVariants.size + 1)
merged.addAll(applied.thisVariants)
merged.addAll(callScope.thisVariants)
setThisVariants(callScope.thisObj, merged)
this.currentClassCtx = applied.currentClassCtx ?: callScope.currentClassCtx
}
Scope(callScope, thisObj = applied.thisObj) {
override fun get(name: String): ObjRecord? {
return applied.get(name) ?: callScope.get(name)
return applied.get(name) ?: super.get(name)
}
override fun applyClosure(closure: Scope, preferredThisType: String?): Scope {

File diff suppressed because it is too large Load Diff

View File

@ -31,7 +31,7 @@ class DelegatedVarDeclStatement(
) : Statement() {
override val pos: Pos = startPos
override suspend fun execute(scope: Scope): Obj {
return bytecodeOnly(scope, "delegated var declaration")
override suspend fun execute(context: Scope): Obj {
return bytecodeOnly(context, "delegated var declaration")
}
}

View File

@ -28,7 +28,7 @@ class DestructuringVarDeclStatement(
val isTransient: Boolean,
override val pos: Pos,
) : Statement() {
override suspend fun execute(scope: Scope): Obj {
return bytecodeOnly(scope, "destructuring declaration")
override suspend fun execute(context: Scope): Obj {
return bytecodeOnly(context, "destructuring declaration")
}
}

View File

@ -28,7 +28,7 @@ class ExtensionPropertyDeclStatement(
) : Statement() {
override val pos: Pos = startPos
override suspend fun execute(scope: Scope): Obj {
return bytecodeOnly(scope, "extension property declaration")
override suspend fun execute(context: Scope): Obj {
return bytecodeOnly(context, "extension property declaration")
}
}

View File

@ -56,29 +56,10 @@ class FrameSlotRef(
}
}
override suspend fun callOn(scope: Scope): Obj {
val resolved = read()
if (resolved === this) {
scope.raiseNotImplemented("call on unresolved frame slot")
}
return resolved.callOn(scope)
}
internal fun refersTo(frame: FrameAccess, slot: Int): Boolean {
return this.frame === frame && this.slot == slot
}
internal fun peekValue(): Obj? {
val bytecodeFrame = frame as? net.sergeych.lyng.bytecode.BytecodeFrame ?: return read()
val raw = bytecodeFrame.getRawObj(slot) ?: return null
if (raw is FrameSlotRef && raw.refersTo(bytecodeFrame, slot)) return null
return when (raw) {
is FrameSlotRef -> raw.peekValue()
is RecordSlotRef -> raw.peekValue()
else -> raw
}
}
fun write(value: Obj) {
when (value) {
is ObjInt -> frame.setInt(slot, value.value)
@ -89,62 +70,6 @@ class FrameSlotRef(
}
}
class ScopeSlotRef(
private val scope: Scope,
private val slot: Int,
private val name: String? = null,
) : net.sergeych.lyng.obj.Obj() {
override suspend fun compareTo(scope: Scope, other: Obj): Int {
val resolvedOther = when (other) {
is FrameSlotRef -> other.read()
is RecordSlotRef -> other.read()
is ScopeSlotRef -> other.read()
else -> other
}
return read().compareTo(scope, resolvedOther)
}
fun read(): Obj {
val record = scope.getSlotRecord(slot)
val direct = record.value
if (direct is FrameSlotRef) return direct.read()
if (direct is RecordSlotRef) return direct.read()
if (direct is ScopeSlotRef) return direct.read()
if (direct !== ObjUnset) {
return direct
}
if (name == null) return record.value
val resolved = scope.get(name) ?: return record.value
if (resolved.value !== ObjUnset) {
scope.updateSlotFor(name, resolved)
}
return resolved.value
}
internal fun peekValue(): Obj? {
val record = scope.getSlotRecord(slot)
val direct = record.value
return when (direct) {
is FrameSlotRef -> direct.peekValue()
is RecordSlotRef -> direct.peekValue()
is ScopeSlotRef -> direct.peekValue()
else -> direct
}
}
fun write(value: Obj) {
scope.setSlotValue(slot, value)
}
override suspend fun callOn(scope: Scope): Obj {
val resolved = read()
if (resolved === this) {
scope.raiseNotImplemented("call on unresolved scope slot")
}
return resolved.callOn(scope)
}
}
class RecordSlotRef(
private val record: ObjRecord,
) : net.sergeych.lyng.obj.Obj() {
@ -152,7 +77,6 @@ class RecordSlotRef(
val resolvedOther = when (other) {
is FrameSlotRef -> other.read()
is RecordSlotRef -> other.read()
is ScopeSlotRef -> other.read()
else -> other
}
return read().compareTo(scope, resolvedOther)
@ -160,37 +84,10 @@ class RecordSlotRef(
fun read(): Obj {
val direct = record.value
return when (direct) {
is FrameSlotRef -> direct.read()
is ScopeSlotRef -> direct.read()
else -> direct
}
}
override suspend fun callOn(scope: Scope): Obj {
val resolved = read()
if (resolved === this) {
scope.raiseNotImplemented("call on unresolved record slot")
}
return resolved.callOn(scope)
}
internal fun peekValue(): Obj? {
val direct = record.value
return when (direct) {
is FrameSlotRef -> direct.peekValue()
is RecordSlotRef -> direct.peekValue()
is ScopeSlotRef -> direct.peekValue()
else -> direct
}
return if (direct is FrameSlotRef) direct.read() else direct
}
fun write(value: Obj) {
val direct = record.value
if (direct is ScopeSlotRef) {
direct.write(value)
} else {
record.value = value
}
record.value = value
}
}

View File

@ -1,5 +1,5 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
* Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -44,28 +44,11 @@ class ModuleScope(
internal fun ensureModuleFrame(fn: CmdFunction): BytecodeFrame {
val current = moduleFrame
val frame = if (current == null) {
val frame = if (current == null || moduleFrameLocalCount != fn.localCount) {
BytecodeFrame(fn.localCount, 0).also {
moduleFrame = it
moduleFrameLocalCount = fn.localCount
}
} else if (fn.localCount > moduleFrameLocalCount) {
val next = BytecodeFrame(fn.localCount, 0)
current.copyTo(next)
moduleFrame = next
moduleFrameLocalCount = fn.localCount
// Retarget frame-based locals to the new frame instance.
val localNames = fn.localSlotNames
for (i in localNames.indices) {
val name = localNames[i] ?: continue
val record = objects[name] ?: localBindings[name] ?: continue
val value = record.value
if (value is FrameSlotRef && value.refersTo(current, i)) {
record.value = FrameSlotRef(next, i)
updateSlotFor(name, record)
}
}
next
} else {
current
}

View File

@ -306,41 +306,17 @@ private class Parser(fromPos: Pos) {
'\'' -> {
val start = pos.toPos()
var value = currentChar
pos.advance()
if (currentChar == '\\') {
value = currentChar
pos.advance()
if (pos.end) throw ScriptError(start, "unterminated character literal")
value = when (currentChar) {
'n' -> {
pos.advance()
'\n'
}
'r' -> {
pos.advance()
'\r'
}
't' -> {
pos.advance()
'\t'
}
'\'' -> {
pos.advance()
'\''
}
'\\' -> {
pos.advance()
'\\'
}
'u' -> loadUnicodeEscape(start)
else -> throw ScriptError(currentPos, "unsupported escape character: $currentChar")
value = when (value) {
'n' -> '\n'
'r' -> '\r'
't' -> '\t'
'\'', '\\' -> value
else -> throw ScriptError(currentPos, "unsupported escape character: $value")
}
} else {
pos.advance()
}
if (currentChar != '\'') throw ScriptError(currentPos, "expected end of character literal: '")
pos.advance()
@ -518,10 +494,6 @@ private class Parser(fromPos: Pos) {
sb.append('\\'); pos.advance()
}
'u' -> {
sb.append(loadUnicodeEscape(start))
}
else -> {
sb.append('\\').append(currentChar)
pos.advance()
@ -548,23 +520,6 @@ private class Parser(fromPos: Pos) {
return Token(result, start, Token.Type.STRING)
}
private fun loadUnicodeEscape(start: Pos): Char {
// Called when currentChar points to 'u' right after a backslash.
if (currentChar != 'u') throw ScriptError(currentPos, "expected unicode escape marker: u")
pos.advance() ?: throw ScriptError(start, "unterminated unicode escape")
var code = 0
repeat(4) {
val ch = currentChar
if (ch !in hexDigits) {
throw ScriptError(currentPos, "invalid unicode escape sequence, expected 4 hex digits")
}
code = (code shl 4) + ch.digitToInt(16)
pos.advance()
}
return code.toChar()
}
/**
* Load characters from the set until it reaches EOF or invalid character found.
* stop at EOF on character filtered by [isValidChar].

View File

@ -1,5 +1,5 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
* Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -19,8 +19,7 @@ package net.sergeych.lyng
data class Pos(val source: Source, val line: Int, val column: Int) {
override fun toString(): String {
val col = if (column >= 0) column + 1 else column
return "${source.fileName}:${line+1}:$col"
return "${source.fileName}:${line+1}:${column}"
}
@Suppress("unused")

View File

@ -471,62 +471,6 @@ open class Scope(
}
}
private fun resolvedRecordValueOrNull(record: ObjRecord): Obj? {
return when (val raw = record.value) {
is FrameSlotRef -> raw.read()
is RecordSlotRef -> raw.read()
else -> raw
}
}
private fun declaredTypeForValueInThisScope(value: Obj): TypeDecl? {
// Prefer direct bindings first.
for (record in objects.values) {
val decl = record.typeDecl ?: continue
if (resolvedRecordValueOrNull(record) === value) return decl
}
for ((_, record) in localBindings) {
val decl = record.typeDecl ?: continue
if (resolvedRecordValueOrNull(record) === value) return decl
}
// Then slots (for frame-first locals).
var i = 0
while (i < slots.size) {
val record = slots[i]
val decl = record.typeDecl
if (decl != null && resolvedRecordValueOrNull(record) === value) return decl
i++
}
return null
}
private fun declaredCollectionElementTypeForValue(value: Obj, rawName: String): TypeDecl? {
var s: Scope? = this
var hops = 0
while (s != null && hops++ < 1024) {
val decl = s.declaredTypeForValueInThisScope(value)
if (decl is TypeDecl.Generic && decl.name.substringAfterLast('.') == rawName) {
return decl.args.firstOrNull()
}
s = s.parent
}
return null
}
/**
* Best-effort lookup of the declared Set element type for a runtime set instance.
* Returns null when type info is unavailable.
*/
fun declaredSetElementTypeForValue(value: Obj): TypeDecl? =
declaredCollectionElementTypeForValue(value, "Set")
/**
* Best-effort lookup of the declared List element type for a runtime list instance.
* Returns null when type info is unavailable.
*/
fun declaredListElementTypeForValue(value: Obj): TypeDecl? =
declaredCollectionElementTypeForValue(value, "List")
internal fun applySlotPlanReset(plan: Map<String, Int>, records: Map<String, ObjRecord>) {
if (plan.isEmpty()) return
slots.clear()
@ -691,16 +635,10 @@ open class Scope(
objects[name]?.let {
if( !it.isMutable )
raiseIllegalAssignment("symbol is readonly: $name")
when (val current = it.value) {
is FrameSlotRef -> current.write(value)
is RecordSlotRef -> current.write(value)
else -> it.value = value
}
it.value = value
// keep local binding index consistent within the frame
localBindings[name] = it
bumpClassLayoutIfNeeded(name, value, recordType)
updateSlotFor(name, it)
syncModuleFrameSlot(name, value)
it
} ?: addItem(name, true, value, visibility, writeVisibility, recordType, isAbstract = isAbstract, isClosed = isClosed, isOverride = isOverride)
@ -717,7 +655,6 @@ open class Scope(
isOverride: Boolean = false,
isTransient: Boolean = false,
callSignature: CallSignature? = null,
typeDecl: TypeDecl? = null,
fieldId: Int? = null,
methodId: Int? = null
): ObjRecord {
@ -730,7 +667,6 @@ open class Scope(
isOverride = isOverride,
isTransient = isTransient,
callSignature = callSignature,
typeDecl = typeDecl,
memberName = name,
fieldId = fieldId,
methodId = methodId
@ -767,7 +703,6 @@ open class Scope(
slots[idx] = rec
}
}
syncModuleFrameSlot(name, value)
return rec
}
@ -815,48 +750,7 @@ open class Scope(
// --- removed doc-aware overloads to keep runtime lean ---
fun addConst(name: String, value: Obj): ObjRecord {
val existing = objects[name]
if (existing != null) {
when (val current = existing.value) {
is FrameSlotRef -> current.write(value)
is RecordSlotRef -> current.write(value)
else -> existing.value = value
}
bumpClassLayoutIfNeeded(name, value, existing.type)
updateSlotFor(name, existing)
syncModuleFrameSlot(name, value)
return existing
}
val slotIndex = getSlotIndexOf(name)
if (slotIndex != null) {
val record = getSlotRecord(slotIndex)
when (val current = record.value) {
is FrameSlotRef -> current.write(value)
is RecordSlotRef -> current.write(value)
else -> record.value = value
}
bumpClassLayoutIfNeeded(name, value, record.type)
updateSlotFor(name, record)
syncModuleFrameSlot(name, value)
return record
}
val record = addItem(name, false, value)
syncModuleFrameSlot(name, value)
return record
}
private fun syncModuleFrameSlot(name: String, value: Obj) {
val module = this as? ModuleScope ?: return
val frame = module.moduleFrame ?: return
val localNames = module.moduleFrameLocalSlotNames
if (localNames.isEmpty()) return
for (i in localNames.indices) {
if (localNames[i] == name) {
frame.setObj(i, value)
}
}
}
fun addConst(name: String, value: Obj) = addItem(name, false, value)
suspend fun eval(code: String): Obj =
@ -970,7 +864,7 @@ open class Scope(
val receiver = rec.receiver ?: thisObj
val del = rec.delegate ?: run {
if (receiver is ObjInstance) {
receiver.writeField(this, name, newValue)
(receiver as ObjInstance).writeField(this, name, newValue)
return
}
raiseError("Internal error: delegated property $name has no delegate")

View File

@ -1,5 +1,5 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
* Copyright 2026 Sergey S. Chernov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -12,12 +12,13 @@
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyng
import net.sergeych.lyng.obj.*
import net.sergeych.lyng.obj.Obj
import net.sergeych.lyng.obj.ObjRecord
import net.sergeych.lyng.obj.ObjString
/**
* Limited facade for Kotlin bridge callables.
@ -107,29 +108,3 @@ inline fun <reified T : Obj> ScopeFacade.thisAs(): T {
fun ScopeFacade.requireScope(): Scope =
(this as? ScopeBridge)?.scope ?: raiseIllegalState("ScopeFacade requires ScopeBridge")
fun ScopeFacade.raiseNPE(): Nothing = requireScope().raiseNPE()
fun ScopeFacade.raiseIndexOutOfBounds(message: String = "Index out of bounds"): Nothing =
requireScope().raiseIndexOutOfBounds(message)
fun ScopeFacade.raiseIllegalAssignment(message: String): Nothing =
requireScope().raiseIllegalAssignment(message)
fun ScopeFacade.raiseUnset(message: String = "property is unset (not initialized)"): Nothing =
requireScope().raiseUnset(message)
fun ScopeFacade.raiseNotFound(message: String = "not found"): Nothing =
requireScope().raiseNotFound(message)
fun ScopeFacade.raiseError(obj: Obj, pos: Pos = this.pos, message: String): Nothing =
requireScope().raiseError(obj, pos, message)
fun ScopeFacade.raiseAssertionFailed(message: String): Nothing =
raiseError(ObjAssertionFailedException(requireScope(), message))
fun ScopeFacade.raiseIllegalOperation(message: String = "Operation is illegal"): Nothing =
raiseError(ObjIllegalOperationException(requireScope(), message))
fun ScopeFacade.raiseIterationFinished(): Nothing =
raiseError(ObjIterationFinishedException(requireScope()))

View File

@ -20,19 +20,16 @@ package net.sergeych.lyng
import kotlinx.coroutines.delay
import kotlinx.coroutines.yield
import net.sergeych.lyng.Script.Companion.defaultImportManager
import net.sergeych.lyng.bridge.bind
import net.sergeych.lyng.bridge.bindObject
import net.sergeych.lyng.bytecode.CmdFunction
import net.sergeych.lyng.bytecode.CmdVm
import net.sergeych.lyng.miniast.*
import net.sergeych.lyng.obj.*
import net.sergeych.lyng.pacman.ImportManager
import net.sergeych.lyng.stdlib_included.observableLyng
import net.sergeych.lyng.stdlib_included.rootLyng
import net.sergeych.lyng.bridge.LyngClassBridge
import net.sergeych.lynon.ObjLynonClass
import net.sergeych.mp_tools.globalDefer
import kotlin.math.*
import kotlin.random.Random as KRandom
@Suppress("TYPE_INTERSECTION_AS_REIFIED_WARNING")
class Script(
@ -46,12 +43,13 @@ class Script(
// private val catchReturn: Boolean = false,
) : Statement() {
fun statements(): List<Statement> = statements
override suspend fun execute(scope: Scope): Obj {
scope.pos = pos
val execScope = resolveModuleScope(scope) ?: scope
val isModuleScope = execScope is ModuleScope
val shouldSeedModule = isModuleScope || execScope.thisObj === ObjVoid
val moduleTarget = (execScope as? ModuleScope) ?: execScope.parent as? ModuleScope ?: execScope
val moduleTarget = execScope
if (shouldSeedModule) {
seedModuleSlots(moduleTarget, scope)
}
@ -59,15 +57,9 @@ class Script(
if (execScope is ModuleScope) {
execScope.ensureModuleFrame(fn)
}
var execFrame: net.sergeych.lyng.bytecode.CmdFrame? = null
val result = CmdVm().execute(fn, execScope, scope.args) { frame, _ ->
execFrame = frame
return CmdVm().execute(fn, execScope, scope.args) { frame, _ ->
seedModuleLocals(frame, moduleTarget, scope)
}
if (execScope !is ModuleScope) {
execFrame?.let { syncFrameLocalsToScope(it, execScope) }
}
return result
}
if (statements.isNotEmpty()) {
scope.raiseIllegalState("bytecode-only execution is required; missing module bytecode")
@ -78,13 +70,6 @@ class Script(
private suspend fun seedModuleSlots(scope: Scope, seedScope: Scope) {
if (importBindings.isEmpty() && importedModules.isEmpty()) return
seedImportBindings(scope, seedScope)
if (moduleSlotPlan.isNotEmpty()) {
scope.applySlotPlan(moduleSlotPlan)
for (name in moduleSlotPlan.keys) {
val record = scope.objects[name] ?: scope.localBindings[name] ?: continue
scope.updateSlotFor(name, record)
}
}
}
private suspend fun seedModuleLocals(
@ -103,43 +88,12 @@ class Script(
val value = if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property) {
scope.resolve(record, name)
} else {
val raw = record.value
when (raw) {
is FrameSlotRef -> {
if (raw.refersTo(frame.frame, i)) {
raw.peekValue() ?: continue
} else if (seedScope !is ModuleScope) {
raw
} else {
raw.read()
}
}
is RecordSlotRef -> {
if (seedScope !is ModuleScope) raw else raw.read()
}
else -> raw
}
record.value
}
frame.setObjUnchecked(base + i, value)
}
}
private fun syncFrameLocalsToScope(frame: net.sergeych.lyng.bytecode.CmdFrame, scope: Scope) {
val localNames = frame.fn.localSlotNames
if (localNames.isEmpty()) return
for (i in localNames.indices) {
val name = localNames[i] ?: continue
val record = scope.getLocalRecordDirect(name) ?: scope.localBindings[name] ?: scope.objects[name] ?: continue
val value = frame.readLocalObj(i)
when (val current = record.value) {
is FrameSlotRef -> current.write(value)
is RecordSlotRef -> current.write(value)
else -> record.value = value
}
scope.updateSlotFor(name, record)
}
}
private suspend fun seedImportBindings(scope: Scope, seedScope: Scope) {
val provider = scope.currentImportProvider
val importedModules = LinkedHashSet<ModuleScope>()
@ -149,9 +103,6 @@ class Script(
if (scope is ModuleScope) {
scope.importedModules = importedModules.toList()
}
for (module in importedModules) {
module.importInto(scope, null)
}
for ((name, binding) in importBindings) {
val record = when (val source = binding.source) {
is ImportBindingSource.Module -> {
@ -214,8 +165,8 @@ class Script(
companion object {
/**
* Create new scope using a standard safe set of modules, using [defaultImportManager]. It is
* suspended as first time invocation requires compilation of standard library or other
* Create new scope using standard safe set of modules, using [defaultImportManager]. It is
* suspended as first time calls requires compilation of standard library or other
* asynchronous initialization.
*/
suspend fun newScope(pos: Pos = Pos.builtIn) = defaultImportManager.newStdScope(pos)
@ -372,10 +323,10 @@ class Script(
addVoidFn("assert") {
val cond = requiredArg<ObjBool>(0)
val message = if (args.size > 1)
": " + toStringOf(call(args[1])).value
": " + toStringOf(call(args[1] as Obj)).value
else ""
if (!cond.value == true)
raiseAssertionFailed("Assertion failed$message")
raiseError(ObjAssertionFailedException(requireScope(), "Assertion failed$message"))
}
fun unwrapCompareArg(value: Obj): Obj {
@ -391,7 +342,12 @@ class Script(
val a = unwrapCompareArg(requiredArg(0))
val b = unwrapCompareArg(requiredArg(1))
if (a.compareTo(requireScope(), b) != 0) {
raiseAssertionFailed("Assertion failed: ${inspect(a)} == ${inspect(b)}")
raiseError(
ObjAssertionFailedException(
requireScope(),
"Assertion failed: ${inspect(a)} == ${inspect(b)}"
)
)
}
}
// alias used in tests
@ -399,13 +355,23 @@ class Script(
val a = unwrapCompareArg(requiredArg(0))
val b = unwrapCompareArg(requiredArg(1))
if (a.compareTo(requireScope(), b) != 0)
raiseAssertionFailed("Assertion failed: ${inspect(a)} == ${inspect(b)}")
raiseError(
ObjAssertionFailedException(
requireScope(),
"Assertion failed: ${inspect(a)} == ${inspect(b)}"
)
)
}
addVoidFn("assertNotEquals") {
val a = unwrapCompareArg(requiredArg(0))
val b = unwrapCompareArg(requiredArg(1))
if (a.compareTo(requireScope(), b) == 0)
raiseAssertionFailed("Assertion failed: ${inspect(a)} != ${inspect(b)}")
raiseError(
ObjAssertionFailedException(
requireScope(),
"Assertion failed: ${inspect(a)} != ${inspect(b)}"
)
)
}
addFnDoc(
"assertThrows",
@ -443,7 +409,12 @@ class Script(
} catch (_: ScriptError) {
ObjNull
}
if (result == null) raiseAssertionFailed("Expected exception but nothing was thrown")
if (result == null) raiseError(
ObjAssertionFailedException(
requireScope(),
"Expected exception but nothing was thrown"
)
)
expectedClass?.let {
if (!result.isInstanceOf(it)) {
val actual = if (result is ObjException) result.exceptionClass else result.objClass
@ -526,12 +497,9 @@ class Script(
addConst("Bool", ObjBool.type)
addConst("Char", ObjChar.type)
addConst("List", ObjList.type)
addConst("ImmutableList", ObjImmutableList.type)
addConst("Set", ObjSet.type)
addConst("ImmutableSet", ObjImmutableSet.type)
addConst("Range", ObjRange.type)
addConst("Map", ObjMap.type)
addConst("ImmutableMap", ObjImmutableMap.type)
addConst("MapEntry", ObjMapEntry.type)
@Suppress("RemoveRedundantQualifierName")
addConst("Callable", Statement.type)
@ -591,110 +559,11 @@ class Script(
}
}
private fun seededRandomFromThis(scope: Scope, thisObj: Obj): KRandom {
val instance = thisObj as? ObjInstance
?: scope.raiseIllegalState("SeededRandom method requires instance receiver")
val stored = instance.kotlinInstanceData
if (stored is KRandom) return stored
return KRandom.Default.also { instance.kotlinInstanceData = it }
}
private suspend fun sampleRangeValue(scope: Scope, random: KRandom, range: ObjRange): Obj {
if (range.start == null || range.start.isNull || range.end == null || range.end.isNull) {
scope.raiseIllegalArgument("Random.next(range) requires a finite range")
}
val start = range.start
val end = range.end
// Real ranges without explicit step are sampled continuously.
if (!range.hasExplicitStep &&
start is Numeric &&
end is Numeric &&
(start !is ObjInt || end !is ObjInt)
) {
val from = start.doubleValue
val to = end.doubleValue
if (from > to || (!range.isEndInclusive && from == to)) {
scope.raiseIllegalArgument("Random.next(range) got an empty numeric range")
}
if (from == to) return ObjReal(from)
val upperExclusive = if (range.isEndInclusive) to.nextUp() else to
if (upperExclusive <= from) {
scope.raiseIllegalArgument("Random.next(range) got an empty numeric range")
}
return ObjReal(random.nextDouble(from, upperExclusive))
}
// Discrete sampling for stepped ranges and integer/char ranges.
var picked: Obj? = null
var count = 0L
range.enumerate(scope) { value ->
count += 1
if (random.nextLong(count) == 0L) {
picked = value
}
true
}
if (count <= 0L || picked == null) {
scope.raiseIllegalArgument("Random.next(range) got an empty range")
}
return picked
}
val defaultImportManager: ImportManager by lazy {
ImportManager(rootScope, SecurityManager.allowAll).apply {
addPackage("lyng.stdlib") { module ->
module.eval(Source("lyng.stdlib", rootLyng))
ObjKotlinIterator.bindTo(module.requireClass("KotlinIterator"))
val seededRandomClass = module.requireClass("SeededRandom")
module.bind("SeededRandom") {
init { data = KRandom.Default }
addFun("nextInt") {
val rnd = seededRandomFromThis(requireScope(), thisObj)
ObjInt.of(rnd.nextInt().toLong())
}
addFun("nextFloat") {
val rnd = seededRandomFromThis(requireScope(), thisObj)
ObjReal(rnd.nextDouble())
}
addFun("next") {
val rnd = seededRandomFromThis(requireScope(), thisObj)
val range = requiredArg<ObjRange>(0)
sampleRangeValue(requireScope(), rnd, range)
}
}
module.bindObject("Random") {
addFun("nextInt") {
ObjInt.of(KRandom.Default.nextInt().toLong())
}
addFun("nextFloat") {
ObjReal(KRandom.Default.nextDouble())
}
addFun("next") {
val range = requiredArg<ObjRange>(0)
sampleRangeValue(requireScope(), KRandom.Default, range)
}
addFun("seeded") {
val seed = requiredArg<ObjInt>(0).value.toInt()
val instance = call(seededRandomClass) as? ObjInstance
?: requireScope().raiseIllegalState("SeededRandom() did not return an object instance")
instance.kotlinInstanceData = KRandom(seed)
instance
}
}
}
addPackage("lyng.observable") { module ->
module.addConst("Observable", ObjObservable)
module.addConst("Subscription", ObjSubscription.type)
module.addConst("ListChange", ObjListChange.type)
module.addConst("ListSet", ObjListSetChange.type)
module.addConst("ListInsert", ObjListInsertChange.type)
module.addConst("ListRemove", ObjListRemoveChange.type)
module.addConst("ListClear", ObjListClearChange.type)
module.addConst("ListReorder", ObjListReorderChange.type)
module.addConst("ObservableList", ObjObservableList.type)
module.addConst("ChangeRejectionException", ObjChangeRejectionExceptionClass)
module.eval(Source("lyng.observable", observableLyng))
}
addPackage("lyng.buffer") {
it.addConstDoc(

View File

@ -1,5 +1,5 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
* Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -30,10 +30,6 @@ sealed class TypeDecl(val isNullable:Boolean = false) {
val returnType: TypeDecl,
val nullable: Boolean = false
) : TypeDecl(nullable)
data class Ellipsis(
val elementType: TypeDecl,
val nullable: Boolean = false
) : TypeDecl(nullable)
data class TypeVar(val name: String, val nullable: Boolean = false) : TypeDecl(nullable)
data class Union(val options: List<TypeDecl>, val nullable: Boolean = false) : TypeDecl(nullable)
data class Intersection(val options: List<TypeDecl>, val nullable: Boolean = false) : TypeDecl(nullable)

View File

@ -12,7 +12,6 @@
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyng
@ -26,7 +25,6 @@ class VarDeclStatement(
val visibility: Visibility,
val initializer: Statement?,
val isTransient: Boolean,
val typeDecl: TypeDecl?,
val slotIndex: Int?,
val scopeId: Int?,
private val startPos: Pos,
@ -34,7 +32,7 @@ class VarDeclStatement(
) : Statement() {
override val pos: Pos = startPos
override suspend fun execute(scope: Scope): Obj {
return bytecodeOnly(scope, "var declaration")
override suspend fun execute(context: Scope): Obj {
return bytecodeOnly(context, "var declaration")
}
}

View File

@ -1,5 +1,5 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
* Copyright 2026 Sergey S. Chernov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -12,7 +12,6 @@
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyng
@ -56,15 +55,6 @@ class WhenIsCondition(
}
}
class WhenNullableCondition(
val negated: Boolean,
override val pos: Pos,
) : WhenCondition(ExpressionStatement(net.sergeych.lyng.obj.ConstRef(net.sergeych.lyng.obj.ObjVoid.asReadonly), pos), pos) {
override suspend fun matches(scope: Scope, value: Obj): Boolean {
return bytecodeOnly(scope)
}
}
data class WhenCase(val conditions: List<WhenCondition>, val block: Statement)
class WhenStatement(

View File

@ -51,9 +51,8 @@ interface BridgeInstanceContext {
* Use [LyngClassBridge.bind] to obtain a binder and register implementations.
* Bindings must happen before the first instance of the class is created.
*
* Important: members you bind here must be extern in Lyng (explicitly, or
* implicitly by being inside `extern class` / `extern object`) so the compiler
* emits the ABI slots that Kotlin bindings attach to.
* Important: members you bind here must be declared as `extern` in Lyng so the
* compiler emits the ABI slots that Kotlin bindings attach to.
*/
interface ClassBridgeBinder {
/** Arbitrary Kotlin-side data attached to the class. */
@ -61,54 +60,12 @@ interface ClassBridgeBinder {
/** Register an initialization hook that runs for each instance. */
fun init(block: suspend BridgeInstanceContext.(ScopeFacade) -> Unit)
/** Register an initialization hook with direct access to the instance. */
fun initWithInstance(block: suspend ScopeFacade.() -> Unit)
/**
* Legacy initWithInstance form.
* Prefer [initWithInstance] with [ScopeFacade] receiver and use [ScopeFacade.thisObj].
*/
@Deprecated(
message = "Use initWithInstance { ... } with ScopeFacade receiver; use thisObj from scope",
replaceWith = ReplaceWith("initWithInstance { block(this, thisObj) }")
)
fun initWithInstance(block: suspend (ScopeFacade, Obj) -> Unit)
/** Bind a Lyng function/member to a Kotlin implementation (requires extern member in Lyng). */
fun addFun(name: String, impl: suspend ScopeFacade.() -> Obj)
/**
* Legacy addFun form.
* Prefer [addFun] with [ScopeFacade] receiver and use [ScopeFacade.thisObj]/[ScopeFacade.args].
*/
@Deprecated(
message = "Use addFun(name) { ... } with ScopeFacade receiver; use thisObj/args from scope",
replaceWith = ReplaceWith("addFun(name) { impl(this, thisObj, args) }")
)
/** Bind a Lyng function/member to a Kotlin implementation (requires `extern` in Lyng). */
fun addFun(name: String, impl: suspend (ScopeFacade, Obj, Arguments) -> Obj)
/** Bind a read-only member (val/property getter) declared extern in Lyng. */
fun addVal(name: String, impl: suspend ScopeFacade.() -> Obj)
/**
* Legacy addVal form.
* Prefer [addVal] with [ScopeFacade] receiver and use [ScopeFacade.thisObj].
*/
@Deprecated(
message = "Use addVal(name) { ... } with ScopeFacade receiver; use thisObj from scope",
replaceWith = ReplaceWith("addVal(name) { impl(this, thisObj) }")
)
/** Bind a read-only member (val/property getter) declared as `extern`. */
fun addVal(name: String, impl: suspend (ScopeFacade, Obj) -> Obj)
/** Bind a mutable member (var/property getter/setter) declared extern in Lyng. */
fun addVar(
name: String,
get: suspend ScopeFacade.() -> Obj,
set: suspend ScopeFacade.(Obj) -> Unit
)
/**
* Legacy addVar form.
* Prefer [addVar] with [ScopeFacade] receiver and use [ScopeFacade.thisObj].
*/
@Deprecated(
message = "Use addVar(name, get, set) with ScopeFacade receiver; use thisObj from scope",
replaceWith = ReplaceWith(
"addVar(name, get = { get(this, thisObj) }, set = { value -> set(this, thisObj, value) })"
)
)
/** Bind a mutable member (var/property getter/setter) declared as `extern`. */
fun addVar(
name: String,
get: suspend (ScopeFacade, Obj) -> Obj,
@ -120,9 +77,8 @@ interface ClassBridgeBinder {
* Entry point for Kotlin bindings to declared Lyng classes.
*
* The workflow is Lyng-first: declare the class and its members in Lyng,
* then bind the implementations from Kotlin. Bound members must be extern
* (explicitly or by enclosing `extern class` / `extern object`) so the compiler
* emits the ABI slots for Kotlin to attach to.
* then bind the implementations from Kotlin. Bound members must be marked
* `extern` so the compiler emits the ABI slots for Kotlin to attach to.
*/
object LyngClassBridge {
/**
@ -166,71 +122,16 @@ object LyngClassBridge {
}
}
/**
* Entry point for Kotlin bindings to declared Lyng objects (singleton instances).
*
* Works similarly to [LyngClassBridge], but targets an already created object instance.
*/
object LyngObjectBridge {
/**
* Resolve a Lyng object by [objectName] and bind Kotlin implementations.
*
* @param module module name used for resolution (required when [module] scope is not provided)
* @param importManager import manager used to resolve the module
*/
suspend fun bind(
objectName: String,
module: String? = null,
importManager: ImportManager = Script.defaultImportManager,
block: ClassBridgeBinder.() -> Unit
): ObjInstance {
val obj = resolveObject(objectName, module, null, importManager)
return bind(obj, block)
}
/**
* Resolve a Lyng object within an existing [moduleScope] and bind Kotlin implementations.
*/
suspend fun bind(
moduleScope: ModuleScope,
objectName: String,
block: ClassBridgeBinder.() -> Unit
): ObjInstance {
val obj = resolveObject(objectName, null, moduleScope, Script.defaultImportManager)
return bind(obj, block)
}
/**
* Bind Kotlin implementations directly to an already resolved object [instance].
*/
suspend fun bind(instance: ObjInstance, block: ClassBridgeBinder.() -> Unit): ObjInstance {
val binder = ObjectBridgeBinderImpl(instance)
binder.block()
binder.commit()
return instance
}
}
/**
* Sugar for [LyngClassBridge.bind] on a module scope.
*
* Bound members must be extern in Lyng (explicitly or via enclosing extern class/object).
* Bound members must be declared as `extern` in Lyng.
*/
suspend fun ModuleScope.bind(
className: String,
block: ClassBridgeBinder.() -> Unit
): ObjClass = LyngClassBridge.bind(this, className, block)
/**
* Sugar for [LyngObjectBridge.bind] on a module scope.
*
* Bound members must be extern in Lyng (explicitly or via enclosing extern class/object).
*/
suspend fun ModuleScope.bindObject(
objectName: String,
block: ClassBridgeBinder.() -> Unit
): ObjInstance = LyngObjectBridge.bind(this, objectName, block)
/** Kotlin-side data slot attached to a Lyng instance. */
var ObjInstance.data: Any?
get() = kotlinInstanceData
@ -278,27 +179,17 @@ private class ClassBridgeBinderImpl(
}
}
override fun initWithInstance(block: suspend ScopeFacade.() -> Unit) {
initHooks.add { scope, _ ->
scope.block()
}
}
@Deprecated(
message = "Use initWithInstance { ... } with ScopeFacade receiver; use thisObj from scope",
replaceWith = ReplaceWith("initWithInstance { block(this, thisObj) }")
)
override fun initWithInstance(block: suspend (ScopeFacade, Obj) -> Unit) {
initHooks.add { scope, inst ->
block(scope, inst)
}
}
override fun addFun(name: String, impl: suspend ScopeFacade.() -> Obj) {
override fun addFun(name: String, impl: suspend (ScopeFacade, Obj, Arguments) -> Obj) {
ensureTemplateNotBuilt()
val target = findMember(name)
val callable = ObjExternCallable.fromBridge {
impl()
impl(this, thisObj, args)
}
val methodId = cls.ensureMethodIdForBridge(name, target.record)
val newRecord = target.record.copy(
@ -309,24 +200,14 @@ private class ClassBridgeBinderImpl(
replaceMember(target, newRecord)
}
@Deprecated(
message = "Use addFun(name) { ... } with ScopeFacade receiver; use thisObj/args from scope",
replaceWith = ReplaceWith("addFun(name) { impl(this, thisObj, args) }")
)
override fun addFun(name: String, impl: suspend (ScopeFacade, Obj, Arguments) -> Obj) {
addFun(name) {
impl(this, thisObj, args)
}
}
override fun addVal(name: String, impl: suspend ScopeFacade.() -> Obj) {
override fun addVal(name: String, impl: suspend (ScopeFacade, Obj) -> Obj) {
ensureTemplateNotBuilt()
val target = findMember(name)
if (target.record.isMutable) {
throw ScriptError(Pos.builtIn, "extern val $name is mutable in class ${cls.className}")
}
val getter = ObjExternCallable.fromBridge {
impl()
impl(this, thisObj)
}
val prop = ObjProperty(name, getter, null)
val isFieldLike = target.record.type == ObjRecord.Type.Field ||
@ -351,20 +232,10 @@ private class ClassBridgeBinderImpl(
replaceMember(target, newRecord)
}
@Deprecated(
message = "Use addVal(name) { ... } with ScopeFacade receiver; use thisObj from scope",
replaceWith = ReplaceWith("addVal(name) { impl(this, thisObj) }")
)
override fun addVal(name: String, impl: suspend (ScopeFacade, Obj) -> Obj) {
addVal(name) {
impl(this, thisObj)
}
}
override fun addVar(
name: String,
get: suspend ScopeFacade.() -> Obj,
set: suspend ScopeFacade.(Obj) -> Unit
get: suspend (ScopeFacade, Obj) -> Obj,
set: suspend (ScopeFacade, Obj, Obj) -> Unit
) {
ensureTemplateNotBuilt()
val target = findMember(name)
@ -372,11 +243,11 @@ private class ClassBridgeBinderImpl(
throw ScriptError(Pos.builtIn, "extern var $name is readonly in class ${cls.className}")
}
val getter = ObjExternCallable.fromBridge {
get()
get(this, thisObj)
}
val setter = ObjExternCallable.fromBridge {
val value = requiredArg<Obj>(0)
set(value)
set(this, thisObj, value)
ObjVoid
}
val prop = ObjProperty(name, getter, setter)
@ -402,24 +273,6 @@ private class ClassBridgeBinderImpl(
replaceMember(target, newRecord)
}
@Deprecated(
message = "Use addVar(name, get, set) with ScopeFacade receiver; use thisObj from scope",
replaceWith = ReplaceWith(
"addVar(name, get = { get(this, thisObj) }, set = { value -> set(this, thisObj, value) })"
)
)
override fun addVar(
name: String,
get: suspend (ScopeFacade, Obj) -> Obj,
set: suspend (ScopeFacade, Obj, Obj) -> Unit
) {
addVar(
name,
get = { get(this, thisObj) },
set = { value -> set(this, thisObj, value) }
)
}
fun commit() {
if (initHooks.isNotEmpty()) {
val target = cls.bridgeInitHooks ?: mutableListOf<suspend (ScopeFacade, ObjInstance) -> Unit>().also {
@ -474,262 +327,6 @@ private class ClassBridgeBinderImpl(
}
}
private class ObjectBridgeBinderImpl(
private val instance: ObjInstance
) : ClassBridgeBinder {
private val cls: ObjClass = instance.objClass
private val initHooks = mutableListOf<suspend (ScopeFacade, ObjInstance) -> Unit>()
override var classData: Any?
get() = cls.kotlinClassData
set(value) { cls.kotlinClassData = value }
override fun init(block: suspend BridgeInstanceContext.(ScopeFacade) -> Unit) {
initHooks.add { scope, inst ->
val ctx = BridgeInstanceContextImpl(inst)
ctx.block(scope)
}
}
override fun initWithInstance(block: suspend ScopeFacade.() -> Unit) {
initHooks.add { scope, _ ->
scope.block()
}
}
@Deprecated(
message = "Use initWithInstance { ... } with ScopeFacade receiver; use thisObj from scope",
replaceWith = ReplaceWith("initWithInstance { block(this, thisObj) }")
)
override fun initWithInstance(block: suspend (ScopeFacade, Obj) -> Unit) {
initHooks.add { scope, inst ->
block(scope, inst)
}
}
override fun addFun(name: String, impl: suspend ScopeFacade.() -> Obj) {
val target = findMember(name)
val callable = ObjExternCallable.fromBridge {
impl()
}
val methodId = cls.ensureMethodIdForBridge(name, target.record)
val newRecord = target.record.copy(
value = callable,
type = ObjRecord.Type.Fun,
methodId = methodId
)
replaceMember(target, newRecord)
updateInstanceMember(target, newRecord)
}
@Deprecated(
message = "Use addFun(name) { ... } with ScopeFacade receiver; use thisObj/args from scope",
replaceWith = ReplaceWith("addFun(name) { impl(this, thisObj, args) }")
)
override fun addFun(name: String, impl: suspend (ScopeFacade, Obj, Arguments) -> Obj) {
addFun(name) {
impl(this, thisObj, args)
}
}
override fun addVal(name: String, impl: suspend ScopeFacade.() -> Obj) {
val target = findMember(name)
if (target.record.isMutable) {
throw ScriptError(Pos.builtIn, "extern val $name is mutable in class ${cls.className}")
}
val getter = ObjExternCallable.fromBridge {
impl()
}
val prop = ObjProperty(name, getter, null)
val isFieldLike = target.record.type == ObjRecord.Type.Field ||
target.record.type == ObjRecord.Type.ConstructorField
val newRecord = if (isFieldLike) {
removeFieldInitializersFor(name)
target.record.copy(
value = prop,
type = target.record.type,
fieldId = target.record.fieldId,
methodId = target.record.methodId
)
} else {
val methodId = cls.ensureMethodIdForBridge(name, target.record)
target.record.copy(
value = prop,
type = ObjRecord.Type.Property,
methodId = methodId,
fieldId = null
)
}
replaceMember(target, newRecord)
updateInstanceMember(target, newRecord)
}
@Deprecated(
message = "Use addVal(name) { ... } with ScopeFacade receiver; use thisObj from scope",
replaceWith = ReplaceWith("addVal(name) { impl(this, thisObj) }")
)
override fun addVal(name: String, impl: suspend (ScopeFacade, Obj) -> Obj) {
addVal(name) {
impl(this, thisObj)
}
}
override fun addVar(
name: String,
get: suspend ScopeFacade.() -> Obj,
set: suspend ScopeFacade.(Obj) -> Unit
) {
val target = findMember(name)
if (!target.record.isMutable) {
throw ScriptError(Pos.builtIn, "extern var $name is readonly in class ${cls.className}")
}
val getter = ObjExternCallable.fromBridge {
get()
}
val setter = ObjExternCallable.fromBridge {
val value = requiredArg<Obj>(0)
set(value)
ObjVoid
}
val prop = ObjProperty(name, getter, setter)
val isFieldLike = target.record.type == ObjRecord.Type.Field ||
target.record.type == ObjRecord.Type.ConstructorField
val newRecord = if (isFieldLike) {
removeFieldInitializersFor(name)
target.record.copy(
value = prop,
type = target.record.type,
fieldId = target.record.fieldId,
methodId = target.record.methodId
)
} else {
val methodId = cls.ensureMethodIdForBridge(name, target.record)
target.record.copy(
value = prop,
type = ObjRecord.Type.Property,
methodId = methodId,
fieldId = null
)
}
replaceMember(target, newRecord)
updateInstanceMember(target, newRecord)
}
@Deprecated(
message = "Use addVar(name, get, set) with ScopeFacade receiver; use thisObj from scope",
replaceWith = ReplaceWith(
"addVar(name, get = { get(this, thisObj) }, set = { value -> set(this, thisObj, value) })"
)
)
override fun addVar(
name: String,
get: suspend (ScopeFacade, Obj) -> Obj,
set: suspend (ScopeFacade, Obj, Obj) -> Unit
) {
addVar(
name,
get = { get(this, thisObj) },
set = { value -> set(this, thisObj, value) }
)
}
suspend fun commit() {
if (initHooks.isNotEmpty()) {
val target = cls.bridgeInitHooks ?: mutableListOf<suspend (ScopeFacade, ObjInstance) -> Unit>().also {
cls.bridgeInitHooks = it
}
target.addAll(initHooks)
val facade = instance.instanceScope.asFacade()
for (hook in initHooks) {
hook(facade, instance)
}
}
}
private fun replaceMember(target: MemberTarget, newRecord: ObjRecord) {
when (target.kind) {
MemberKind.Instance -> {
cls.replaceMemberForBridge(target.name, newRecord)
if (target.mirrorClassScope && cls.classScope?.objects?.containsKey(target.name) == true) {
cls.replaceClassScopeMemberForBridge(target.name, newRecord)
}
}
MemberKind.Static -> cls.replaceClassScopeMemberForBridge(target.name, newRecord)
}
}
private fun updateInstanceMember(target: MemberTarget, newRecord: ObjRecord) {
val key = instanceStorageKey(target, newRecord) ?: return
ensureInstanceSlotCapacity()
instance.instanceScope.objects[key] = newRecord
cls.fieldSlotForKey(key)?.let { slot ->
instance.setFieldSlotRecord(slot.slot, newRecord)
}
cls.methodSlotForKey(key)?.let { slot ->
instance.setMethodSlotRecord(slot.slot, newRecord)
}
}
private fun instanceStorageKey(target: MemberTarget, rec: ObjRecord): String? = when (target.kind) {
MemberKind.Instance -> {
if (rec.visibility == Visibility.Private ||
rec.type == ObjRecord.Type.Field ||
rec.type == ObjRecord.Type.ConstructorField ||
rec.type == ObjRecord.Type.Delegated) {
cls.mangledName(target.name)
} else {
target.name
}
}
MemberKind.Static -> {
if (rec.type != ObjRecord.Type.Fun &&
rec.type != ObjRecord.Type.Property &&
rec.type != ObjRecord.Type.Delegated) {
null
} else if (rec.visibility == Visibility.Private || rec.type == ObjRecord.Type.Delegated) {
cls.mangledName(target.name)
} else {
target.name
}
}
}
private fun ensureInstanceSlotCapacity() {
val fieldCount = cls.fieldSlotCount()
if (instance.fieldSlots.size < fieldCount) {
val newSlots = arrayOfNulls<ObjRecord>(fieldCount)
instance.fieldSlots.copyInto(newSlots, 0, 0, instance.fieldSlots.size)
instance.fieldSlots = newSlots
}
val methodCount = cls.methodSlotCount()
if (instance.methodSlots.size < methodCount) {
val newSlots = arrayOfNulls<ObjRecord>(methodCount)
instance.methodSlots.copyInto(newSlots, 0, 0, instance.methodSlots.size)
instance.methodSlots = newSlots
}
}
private fun findMember(name: String): MemberTarget {
val inst = cls.members[name]
val stat = cls.classScope?.objects?.get(name)
if (inst != null) {
return MemberTarget(name, inst, MemberKind.Instance, mirrorClassScope = stat != null)
}
if (stat != null) return MemberTarget(name, stat, MemberKind.Static)
throw ScriptError(Pos.builtIn, "extern member $name not found in class ${cls.className}")
}
private fun removeFieldInitializersFor(name: String) {
if (cls.instanceInitializers.isEmpty()) return
val storageName = cls.mangledName(name)
cls.instanceInitializers.removeAll { init ->
val stmt = init as? Statement ?: return@removeAll false
val original = (stmt as? BytecodeStatement)?.original ?: stmt
original is InstanceFieldInitStatement && original.storageName == storageName
}
}
}
private suspend fun resolveClass(
className: String,
module: String?,
@ -752,26 +349,3 @@ private suspend fun resolveClass(
}
throw ScriptError(Pos.builtIn, "class $className not found in module ${scope.packageName}")
}
private suspend fun resolveObject(
objectName: String,
module: String?,
moduleScope: ModuleScope?,
importManager: ImportManager
): ObjInstance {
val scope = moduleScope ?: run {
if (module == null) {
throw ScriptError(Pos.builtIn, "module is required to resolve $objectName")
}
importManager.createModuleScope(Pos.builtIn, module)
}
val rec = scope.get(objectName)
val direct = rec?.value as? ObjInstance
if (direct != null) return direct
if (objectName.contains('.')) {
val resolved = scope.resolveQualifiedIdentifier(objectName)
val inst = resolved as? ObjInstance
if (inst != null) return inst
}
throw ScriptError(Pos.builtIn, "object $objectName not found in module ${scope.packageName}")
}

View File

@ -1,264 +0,0 @@
/*
* Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package net.sergeych.lyng.bridge
import net.sergeych.lyng.*
import net.sergeych.lyng.obj.Obj
import net.sergeych.lyng.obj.ObjBool
import net.sergeych.lyng.obj.ObjExternCallable
import net.sergeych.lyng.obj.ObjInt
import net.sergeych.lyng.obj.ObjNull
import net.sergeych.lyng.obj.ObjProperty
import net.sergeych.lyng.obj.ObjReal
import net.sergeych.lyng.obj.ObjRecord
import net.sergeych.lyng.obj.ObjString
import net.sergeych.lyng.obj.ObjVoid
import net.sergeych.lyng.obj.toBool
import net.sergeych.lyng.obj.toDouble
import net.sergeych.lyng.obj.toInt
import net.sergeych.lyng.obj.toLong
import net.sergeych.lyng.obj.toObj
import net.sergeych.lyng.requiredArg
/**
* Global/module-level binding API for Lyng-first extern declarations.
*
* Typical flow:
* 1) declare `extern fun` / `extern val` / `extern var` in Lyng module;
* 2) bind Kotlin implementation using this API.
*/
interface LyngGlobalBinder {
fun bindGlobalFunRaw(
name: String,
fn: suspend (scope: ScopeFacade, args: Arguments) -> Obj
)
fun bindGlobalFun(
name: String,
fn: suspend GlobalArgReader.() -> Obj
)
fun bindGlobalVarRaw(
name: String,
get: suspend (scope: ScopeFacade) -> Obj,
set: (suspend (scope: ScopeFacade, value: Obj) -> Unit)? = null
)
}
/**
* Reader helper for Kotlin-typed argument access.
*/
interface GlobalArgReader {
val scope: ScopeFacade
val args: Arguments
val size: Int
fun requireExactCount(count: Int)
fun obj(index: Int): Obj
fun objOrNull(index: Int): Obj?
fun int(index: Int): Int
fun long(index: Int): Long
fun double(index: Int): Double
fun bool(index: Int): Boolean
fun string(index: Int): String
}
private class ModuleGlobalBinder(
private val module: ModuleScope
) : LyngGlobalBinder {
override fun bindGlobalFunRaw(
name: String,
fn: suspend (scope: ScopeFacade, args: Arguments) -> Obj
) {
val existing = module[name]
val callable = ObjExternCallable.fromBridge {
fn(this, args)
}
module.addItem(
name = name,
isMutable = false,
value = callable,
visibility = existing?.visibility ?: Visibility.Public,
writeVisibility = existing?.writeVisibility,
recordType = ObjRecord.Type.Fun,
callSignature = existing?.callSignature,
typeDecl = existing?.typeDecl
)
}
override fun bindGlobalFun(
name: String,
fn: suspend GlobalArgReader.() -> Obj
) {
bindGlobalFunRaw(name) { scope, args ->
val reader = GlobalArgReaderImpl(scope, args)
fn(reader)
}
}
override fun bindGlobalVarRaw(
name: String,
get: suspend (scope: ScopeFacade) -> Obj,
set: (suspend (scope: ScopeFacade, value: Obj) -> Unit)?
) {
val existing = module[name]
if (existing != null) {
if (existing.isMutable && set == null) {
throw net.sergeych.lyng.ScriptError(Pos.builtIn, "extern var $name requires a setter")
}
if (!existing.isMutable && set != null) {
throw net.sergeych.lyng.ScriptError(Pos.builtIn, "extern val $name does not allow a setter")
}
}
val mutable = existing?.isMutable ?: (set != null)
val getter = ObjExternCallable.fromBridge {
get(this)
}
val setter = set?.let { setterImpl ->
ObjExternCallable.fromBridge {
setterImpl(this, requiredArg(0))
ObjVoid
}
}
module.addItem(
name = name,
isMutable = mutable,
value = ObjProperty(name, getter, setter),
visibility = existing?.visibility ?: Visibility.Public,
writeVisibility = existing?.writeVisibility,
recordType = ObjRecord.Type.Property,
callSignature = existing?.callSignature,
typeDecl = existing?.typeDecl
)
}
}
private class GlobalArgReaderImpl(
override val scope: ScopeFacade,
override val args: Arguments
) : GlobalArgReader {
override val size: Int
get() = args.list.size
override fun requireExactCount(count: Int) {
if (size != count) scope.raiseIllegalArgument("Expected exactly $count arguments, got $size")
}
override fun obj(index: Int): Obj =
objOrNull(index) ?: scope.raiseIllegalArgument("Missing required argument at index $index")
override fun objOrNull(index: Int): Obj? =
args.list.getOrNull(index)
override fun int(index: Int): Int = long(index).toInt()
override fun long(index: Int): Long = obj(index).toLong()
override fun double(index: Int): Double = obj(index).toDouble()
override fun bool(index: Int): Boolean = obj(index).toBool()
override fun string(index: Int): String {
val value = obj(index)
return (value as? ObjString)?.value
?: scope.raiseClassCastError("Expected String at index $index, got ${value.objClass.className}")
}
}
fun ModuleScope.globalBinder(): LyngGlobalBinder = ModuleGlobalBinder(this)
inline fun <reified T> GlobalArgReader.required(index: Int): T =
coerceArg(scope, obj(index), index)
inline fun <reified T> GlobalArgReader.optional(index: Int, default: T): T {
val value = objOrNull(index) ?: return default
return coerceArg(scope, value, index)
}
inline fun <reified A1> LyngGlobalBinder.bindGlobalFun1(
name: String,
noinline fn: suspend (A1) -> Obj
) {
bindGlobalFun(name) {
requireExactCount(1)
fn(required(0))
}
}
inline fun <reified A1, reified A2> LyngGlobalBinder.bindGlobalFun2(
name: String,
noinline fn: suspend (A1, A2) -> Obj
) {
bindGlobalFun(name) {
requireExactCount(2)
fn(required(0), required(1))
}
}
inline fun <reified A1, reified A2, reified A3> LyngGlobalBinder.bindGlobalFun3(
name: String,
noinline fn: suspend (A1, A2, A3) -> Obj
) {
bindGlobalFun(name) {
requireExactCount(3)
fn(required(0), required(1), required(2))
}
}
inline fun <reified T> LyngGlobalBinder.bindGlobalVar(
name: String,
noinline get: suspend () -> T,
noinline set: (suspend (T) -> Unit)? = null
) {
bindGlobalVarRaw(
name = name,
get = { get().toObj() },
set = set?.let { setter ->
{ scope, value ->
setter(coerceArg<T>(scope = scope, value = value, index = 0))
}
}
)
}
@PublishedApi
internal inline fun <reified T> coerceArg(scope: ScopeFacade, value: Obj, index: Int): T {
if (value === ObjNull && null is T) return null as T
(value as? T)?.let { return it }
@Suppress("UNCHECKED_CAST")
return when (T::class) {
Int::class -> value.toInt() as T
Long::class -> value.toLong() as T
Double::class -> value.toDouble() as T
Float::class -> value.toDouble().toFloat() as T
Boolean::class -> value.toBool() as T
String::class -> (value as? ObjString)?.value as? T
?: scope.raiseClassCastError("Expected String at index $index, got ${value.objClass.className}")
Obj::class -> value as T
ObjInt::class -> (value as? ObjInt) as? T
?: scope.raiseClassCastError("Expected ObjInt at index $index, got ${value.objClass.className}")
ObjString::class -> (value as? ObjString) as? T
?: scope.raiseClassCastError("Expected ObjString at index $index, got ${value.objClass.className}")
ObjReal::class -> (value as? ObjReal) as? T
?: scope.raiseClassCastError("Expected ObjReal at index $index, got ${value.objClass.className}")
ObjBool::class -> (value as? ObjBool) as? T
?: scope.raiseClassCastError("Expected ObjBool at index $index, got ${value.objClass.className}")
else -> scope.raiseClassCastError("Unsupported typed argument binding for ${T::class.simpleName}")
}
}

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