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Fix bound property captures and property slot resolution

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This commit is contained in:
Sergey Chernov 2026-03-28 00:00:59 +03:00
parent 86e8b2e2bc
commit b0fb65a036
8 changed files with 217 additions and 53 deletions
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2
lynglib/src/commonMain/kotlin/net/sergeych/lyng/Compiler.kt
View File

@ -8253,7 +8253,7 @@ class Compiler(
?: context.parent?.get(localName)
?: context.get(localName)
?: continue
val value = if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property) {
val value = if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || record.value is ObjProperty) {
context.resolve(record, localName)
} else {
record.value

27
lynglib/src/commonMain/kotlin/net/sergeych/lyng/FrameAccess.kt
View File

@ -167,6 +167,19 @@ class RecordSlotRef(
}
}
suspend fun read(scope: Scope, name: String?): Obj {
val direct = record.value
if (name != null && (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || direct is ObjProperty)) {
return scope.resolve(record, name)
}
return when (direct) {
is FrameSlotRef -> direct.read()
is RecordSlotRef -> direct.read(scope, name)
is ScopeSlotRef -> direct.read()
else -> direct
}
}
override suspend fun callOn(scope: Scope): Obj {
val resolved = read()
if (resolved === this) {
@ -193,4 +206,18 @@ class RecordSlotRef(
record.value = value
}
}
suspend fun write(scope: Scope, name: String?, value: Obj): Boolean {
val direct = record.value
if (name != null && (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || direct is ObjProperty)) {
scope.assign(record, name, value)
return true
}
when (direct) {
is ScopeSlotRef -> direct.write(value)
is RecordSlotRef -> if (direct.write(scope, name, value)) return true else direct.write(value)
else -> record.value = value
}
return false
}
}

12
lynglib/src/commonMain/kotlin/net/sergeych/lyng/bytecode/BytecodeCompiler.kt
View File

@ -2396,7 +2396,8 @@ class BytecodeCompiler(
builder.emit(Opcode.THROW, posId, msgSlot)
return value
}
val slot = resolveSlot(localTarget)
val slot = resolveCapturedOwnerScopeSlot(localTarget)
?: resolveSlot(localTarget)
?: resolveAssignableSlotByName(localTarget.name)?.first
?: return null
if (slot < scopeSlotCount && value.type != SlotType.UNKNOWN) {
@ -2702,7 +2703,7 @@ class BytecodeCompiler(
return CompiledValue(result, SlotType.OBJ)
}
if (localTarget.isDelegated) return compileEvalRef(ref)
val slot = resolveSlot(localTarget) ?: return null
val slot = resolveCapturedOwnerScopeSlot(localTarget) ?: resolveSlot(localTarget) ?: return null
val targetType = slotTypes[slot] ?: SlotType.OBJ
if (!localTarget.isMutable) {
if (targetType != SlotType.OBJ && targetType != SlotType.UNKNOWN) return compileEvalRef(ref)
@ -7630,6 +7631,13 @@ class BytecodeCompiler(
return scopeSlotMap[scopeKey]
}
private fun resolveCapturedOwnerScopeSlot(ref: LocalSlotRef): Int? {
val ownerScopeId = ref.captureOwnerScopeId ?: return null
val ownerSlot = ref.captureOwnerSlot ?: return null
val key = ScopeSlotKey(ownerScopeId, ownerSlot)
return scopeSlotMap[key]
}
private fun updateSlotType(slot: Int, type: SlotType) {
if (forcedObjSlots.contains(slot) && type != SlotType.OBJ) return
if (type == SlotType.UNKNOWN) {

2
lynglib/src/commonMain/kotlin/net/sergeych/lyng/bytecode/BytecodeStatement.kt
View File

@ -50,7 +50,7 @@ class BytecodeStatement private constructor(
?: scope.parent?.get(name)
?: scope.get(name)
?: continue
val value = if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property) {
val value = if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || record.value is net.sergeych.lyng.obj.ObjProperty) {
scope.resolve(record, name)
} else {
record.value

178
lynglib/src/commonMain/kotlin/net/sergeych/lyng/bytecode/CmdRuntime.kt
View File

@ -85,6 +85,9 @@ class CmdNop : Cmd() {
class CmdMoveObj(internal val src: Int, internal val dst: Int) : Cmd() {
override suspend fun perform(frame: CmdFrame) {
val value = frame.slotToObj(src)
if (frame.writeThroughPropertyLikeSlot(dst, value)) {
return
}
if (frame.shouldBypassImmutableWrite(dst)) {
frame.setObjUnchecked(dst, value)
} else {
@ -2595,7 +2598,7 @@ private fun buildFunctionCaptureRecords(frame: CmdFrame, captureNames: List<Stri
}
val scoped = frame.scope.chainLookupIgnoreClosure(name, followClosure = true) ?: frame.scope.get(name)
if (scoped != null) {
records += ObjRecord(RecordSlotRef(scoped), isMutable = scoped.isMutable)
records += scoped
continue
}
frame.ensureScope().raiseSymbolNotFound("capture $name not found")
@ -2858,7 +2861,7 @@ class CmdDeclInstanceProperty(internal val constId: Int, internal val slot: Int)
val decl = frame.fn.constants[constId] as? BytecodeConst.InstancePropertyDecl
?: error("DECL_INSTANCE_PROPERTY expects InstancePropertyDecl at $constId")
val scope = frame.ensureScope()
val prop = frame.slotToObj(slot)
val prop = frame.storedSlotObj(slot)
scope.addItem(
decl.name,
decl.isMutable,
@ -3724,7 +3727,7 @@ class BytecodeLambdaCallable(
?: context.parent?.get(name)
?: context.get(name)
?: continue
val value = if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property) {
val value = if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || record.value is ObjProperty) {
context.resolve(record, name)
} else {
record.value
@ -3817,7 +3820,29 @@ class CmdFrame(
}
internal fun getLocalSlotTypeCode(localIndex: Int): Byte = frame.getSlotTypeCode(localIndex)
internal fun readLocalObj(localIndex: Int): Obj = localSlotToObj(localIndex)
internal fun readLocalObj(localIndex: Int): Obj {
return when (frame.getSlotTypeCode(localIndex)) {
SlotType.INT.code -> ObjInt.of(frame.getInt(localIndex))
SlotType.REAL.code -> ObjReal.of(frame.getReal(localIndex))
SlotType.BOOL.code -> if (frame.getBool(localIndex)) ObjTrue else ObjFalse
SlotType.OBJ.code -> {
val obj = frame.getObj(localIndex)
when (obj) {
is FrameSlotRef -> obj.read()
is RecordSlotRef -> obj.read()
else -> obj
}
}
else -> {
val obj = frame.getObj(localIndex)
when (obj) {
is FrameSlotRef -> obj.read()
is RecordSlotRef -> obj.read()
else -> obj
}
}
}
}
internal fun isFastLocalSlot(slot: Int): Boolean {
if (slot < fn.scopeSlotCount) return false
val localIndex = slot - fn.scopeSlotCount
@ -4262,7 +4287,7 @@ class CmdFrame(
return if (slot < fn.scopeSlotCount) {
getScopeSlotValue(slot)
} else {
localSlotToObj(slot - fn.scopeSlotCount)
readLocalSlotValue(slot - fn.scopeSlotCount)
}
}
@ -4305,6 +4330,34 @@ class CmdFrame(
}
}
suspend fun writeThroughPropertyLikeSlot(slot: Int, value: Obj): Boolean {
if (slot < fn.scopeSlotCount) {
val target = scopeTarget(slot)
val index = ensureScopeSlot(target, slot)
val name = fn.scopeSlotNames.getOrNull(slot)
val record = resolveScopeSlotRecordForWrite(target, index, name)
if (name != null && record != null && (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || record.value is ObjProperty)) {
target.assign(record, name, value)
return true
}
return false
}
val localIndex = slot - fn.scopeSlotCount
val name = fn.localSlotNames.getOrNull(localIndex) ?: return false
val raw = frame.getRawObj(localIndex)
if (raw is RecordSlotRef) {
if (raw.write(scope, name, value)) return true
return false
}
if (raw !== ObjUnset && raw !is ObjProperty) return false
val record = scope.parent?.get(name) ?: scope.get(name) ?: return false
if (record.type != ObjRecord.Type.Delegated && record.type != ObjRecord.Type.Property && record.value !is ObjProperty) {
return false
}
scope.assign(record, name, value)
return true
}
suspend fun getInt(slot: Int): Long {
return if (slot < fn.scopeSlotCount) {
getScopeSlotValue(slot).toLong()
@ -4314,14 +4367,7 @@ class CmdFrame(
SlotType.INT.code -> frame.getInt(local)
SlotType.REAL.code -> frame.getReal(local).toLong()
SlotType.BOOL.code -> if (frame.getBool(local)) 1L else 0L
SlotType.OBJ.code -> {
val obj = frame.getObj(local)
when (obj) {
is FrameSlotRef -> obj.read().toLong()
is RecordSlotRef -> obj.read().toLong()
else -> obj.toLong()
}
}
SlotType.OBJ.code -> readLocalSlotValue(local).toLong()
else -> 0L
}
}
@ -4401,14 +4447,7 @@ class CmdFrame(
SlotType.REAL.code -> frame.getReal(local)
SlotType.INT.code -> frame.getInt(local).toDouble()
SlotType.BOOL.code -> if (frame.getBool(local)) 1.0 else 0.0
SlotType.OBJ.code -> {
val obj = frame.getObj(local)
when (obj) {
is FrameSlotRef -> obj.read().toDouble()
is RecordSlotRef -> obj.read().toDouble()
else -> obj.toDouble()
}
}
SlotType.OBJ.code -> readLocalSlotValue(local).toDouble()
else -> 0.0
}
}
@ -4477,14 +4516,7 @@ class CmdFrame(
SlotType.BOOL.code -> frame.getBool(local)
SlotType.INT.code -> frame.getInt(local) != 0L
SlotType.REAL.code -> frame.getReal(local) != 0.0
SlotType.OBJ.code -> {
val obj = frame.getObj(local)
when (obj) {
is FrameSlotRef -> obj.read().toBool()
is RecordSlotRef -> obj.read().toBool()
else -> obj.toBool()
}
}
SlotType.OBJ.code -> readLocalSlotValue(local).toBool()
else -> false
}
}
@ -4596,21 +4628,42 @@ class CmdFrame(
}
val local = slot - fn.scopeSlotCount
if (fn.localSlotCaptures.getOrNull(local) == true) {
return localSlotToObj(local)
return readLocalSlotValue(local)
}
return when (frame.getSlotTypeCode(local)) {
SlotType.INT.code -> ObjInt.of(frame.getInt(local))
SlotType.REAL.code -> ObjReal.of(frame.getReal(local))
SlotType.BOOL.code -> if (frame.getBool(local)) ObjTrue else ObjFalse
SlotType.OBJ.code -> {
val obj = frame.getObj(local)
when (obj) {
is FrameSlotRef -> obj.read()
is RecordSlotRef -> obj.read()
else -> obj
SlotType.OBJ.code -> readLocalSlotValue(local)
else -> readLocalSlotValue(local)
}
}
else -> localSlotToObj(local)
fun storedSlotObj(slot: Int): Obj {
if (slot < fn.scopeSlotCount) {
val target = scopeTarget(slot)
val index = ensureScopeSlot(target, slot)
val record = target.getSlotRecord(index)
return when (val direct = record.value) {
is FrameSlotRef -> direct.read()
is RecordSlotRef -> direct.read()
is ScopeSlotRef -> direct.read()
else -> direct
}
}
val local = slot - fn.scopeSlotCount
return when (frame.getSlotTypeCode(local)) {
SlotType.INT.code -> ObjInt.of(frame.getInt(local))
SlotType.REAL.code -> ObjReal.of(frame.getReal(local))
SlotType.BOOL.code -> if (frame.getBool(local)) ObjTrue else ObjFalse
SlotType.OBJ.code, SlotType.UNKNOWN.code -> when (val raw = frame.getRawObj(local)) {
is FrameSlotRef -> raw.read()
is RecordSlotRef -> raw.read()
is ScopeSlotRef -> raw.read()
null -> ObjNull
else -> raw
}
else -> frame.getRawObj(local) ?: ObjNull
}
}
@ -4766,7 +4819,8 @@ class CmdFrame(
}
}
private fun localSlotToObj(localIndex: Int): Obj {
private suspend fun readLocalSlotValue(localIndex: Int): Obj {
val localName = fn.localSlotNames.getOrNull(localIndex)
return when (frame.getSlotTypeCode(localIndex)) {
SlotType.INT.code -> ObjInt.of(frame.getInt(localIndex))
SlotType.REAL.code -> ObjReal.of(frame.getReal(localIndex))
@ -4775,7 +4829,9 @@ class CmdFrame(
val obj = frame.getObj(localIndex)
when (obj) {
is FrameSlotRef -> obj.read()
is RecordSlotRef -> obj.read()
is RecordSlotRef -> obj.read(scope, localName)
is ObjProperty -> resolvePropertyLikeLocal(localName, obj)
ObjUnset -> resolveUnsetLocal(localName)
else -> obj
}
}
@ -4783,13 +4839,34 @@ class CmdFrame(
val obj = frame.getObj(localIndex)
when (obj) {
is FrameSlotRef -> obj.read()
is RecordSlotRef -> obj.read()
is RecordSlotRef -> obj.read(scope, localName)
is ObjProperty -> resolvePropertyLikeLocal(localName, obj)
ObjUnset -> resolveUnsetLocal(localName)
else -> obj
}
}
}
}
private suspend fun resolvePropertyLikeLocal(localName: String?, property: ObjProperty): Obj {
if (localName != null) {
val record = scope.parent?.get(localName) ?: scope.get(localName)
if (record != null && (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || record.value is ObjProperty)) {
return scope.resolve(record, localName)
}
}
return property.callGetter(scope, scope.thisObj)
}
private suspend fun resolveUnsetLocal(localName: String?): Obj {
if (localName == null) return ObjUnset
val record = scope.parent?.get(localName) ?: scope.get(localName) ?: return ObjUnset
if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || record.value is ObjProperty) {
return scope.resolve(record, localName)
}
return record.value
}
private suspend fun getScopeSlotValue(slot: Int): Obj {
val target = scopeTarget(slot)
val name = fn.scopeSlotNames[slot]
@ -4878,16 +4955,33 @@ class CmdFrame(
private suspend fun setScopeSlotValueAtAddr(addrSlot: Int, value: Obj) {
val target = addrScopes[addrSlot] ?: error("Address slot $addrSlot is not resolved")
val index = addrIndices[addrSlot]
val record = target.getSlotRecord(index)
val slotId = addrScopeSlots[addrSlot]
val name = fn.scopeSlotNames.getOrNull(slotId)
if (name != null && (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || record.value is ObjProperty)) {
val record = resolveScopeSlotRecordForWrite(target, index, name)
if (name != null && record != null && (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || record.value is ObjProperty)) {
target.assign(record, name, value)
return
}
target.setSlotValue(index, value)
}
private fun resolveScopeSlotRecordForWrite(target: Scope, index: Int, name: String?): ObjRecord? {
val record = target.getSlotRecord(index)
if (name == null) return record
if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || record.value is ObjProperty) {
return record
}
if (record.value !== ObjUnset && record.memberName == null) {
return record
}
val resolved = target.get(name) ?: return record
if (resolved.value !== ObjUnset || resolved.type == ObjRecord.Type.Delegated || resolved.type == ObjRecord.Type.Property || resolved.value is ObjProperty) {
target.updateSlotFor(name, resolved)
return resolved
}
return record
}
internal fun ensureScopeSlot(target: Scope, slot: Int): Int {
val name = fn.scopeSlotNames[slot]
if (name != null) {

2
lynglib/src/commonMain/kotlin/net/sergeych/lyng/bytecode/SeedLocals.kt
View File

@ -31,7 +31,7 @@ internal suspend fun seedFrameLocalsFromScope(frame: CmdFrame, scope: Scope) {
val record = scope.getLocalRecordDirect(name)
?: scope.chainLookupIgnoreClosure(name, followClosure = true)
?: continue
val value = if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property) {
val value = if (record.type == ObjRecord.Type.Delegated || record.type == ObjRecord.Type.Property || record.value is net.sergeych.lyng.obj.ObjProperty) {
scope.resolve(record, name)
} else {
record.value

13
lynglib/src/commonMain/kotlin/net/sergeych/lyng/obj/Obj.kt
View File

@ -591,11 +591,14 @@ open class Obj {
return obj.copy(value = res, type = ObjRecord.Type.Other)
}
val value = obj.value
if (value is ObjProperty || obj.type == ObjRecord.Type.Property) {
val prop = (value as? ObjProperty)
?: scope.raiseError("Expected ObjProperty for property member $name, got ${value::class}")
val res = prop.callGetter(scope, this, decl)
return ObjRecord(res, obj.isMutable)
if (value is ObjProperty) {
val res = value.callGetter(scope, this, decl)
return obj.copy(value = res, type = ObjRecord.Type.Other)
}
if (obj.type == ObjRecord.Type.Property) {
// Some runtime paths cache the resolved property value back into the record.
// Treat that as an already-resolved read result instead of trying to call a getter again.
return obj.copy(type = ObjRecord.Type.Other)
}
val caller = scope.currentClassCtx
// Check visibility for non-property members here if they weren't checked before

32
lynglib/src/commonTest/kotlin/GlobalPropertyCaptureRegressionTest.kt
View File

@ -18,6 +18,7 @@
package net.sergeych.lyng
import kotlinx.coroutines.test.runTest
import net.sergeych.lyng.obj.ObjRecord
import net.sergeych.lyng.bridge.bindGlobalVar
import net.sergeych.lyng.bridge.globalBinder
import kotlin.test.Test
@ -49,4 +50,35 @@ class GlobalPropertyCaptureRegressionTest {
assertEquals(2.0, x, "bound extern var should stay live inside function bodies")
}
@Test
fun externGlobalVarShouldStayLiveWhenScriptRunsInChildScope() = runTest {
val base = Script.newScope() as ModuleScope
var x = 1.0
base.eval("extern var X: Real")
base.globalBinder().bindGlobalVar(
name = "X",
get = { x },
set = { x = it }
)
val child = base.createChildScope()
child.eval(
Source(
"child-scope-probe",
"""
fun main() {
X = X + 1.0
}
""".trimIndent()
)
)
val mainRecord = child["main"]
check(mainRecord?.type == ObjRecord.Type.Fun)
child.eval("main()")
assertEquals(2.0, x, "bound extern var should stay live in child-scope execution")
}
}