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Fix escaping immutable closure captures

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This commit is contained in:
Sergey Chernov 2026-04-22 18:50:49 +03:00
parent 0f5343fa17
commit 14214e91e1
2 changed files with 58 additions and 10 deletions
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12
lynglib/src/commonMain/kotlin/net/sergeych/lyng/bytecode/CmdRuntime.kt
View File

@ -2204,8 +2204,8 @@ class CmdAssignOpObj(
}
if (result == null) {
val name = (frame.fn.constants.getOrNull(nameId) as? BytecodeConst.StringVal)?.value
if (name != null) frame.ensureScope().raiseIllegalAssignment("symbol is readonly: $name")
frame.ensureScope().raiseIllegalAssignment("symbol is readonly")
if (name != null) frame.ensureScope().raiseIllegalAssignment("can't reassign val $name")
frame.ensureScope().raiseIllegalAssignment("can't reassign val")
}
frame.storeObjResult(dst, result)
return
@ -4552,7 +4552,7 @@ class CmdFrame(
type = inherited.type
)
copied.delegate = inherited.delegate
return@mapIndexed copied
return@mapIndexed freezeImmutableCaptureRecord(copied)
}
}
val isMutable = fn.localSlotMutables.getOrNull(localIndex) ?: false
@ -4576,11 +4576,13 @@ class CmdFrame(
val record = findNamedExistingRecord(scope, name)
if (record != null) {
val value = record.value
return@mapIndexed when (value) {
return@mapIndexed freezeImmutableCaptureRecord(
when (value) {
is FrameSlotRef -> ObjRecord(value, isMutable)
is RecordSlotRef -> ObjRecord(value, isMutable)
else -> ObjRecord(value, isMutable)
}
)
}
if (hasNamedScopeBinding(scope, name)) {
throw ScriptError(
@ -4589,11 +4591,13 @@ class CmdFrame(
)
}
}
freezeImmutableCaptureRecord(
when (raw) {
is FrameSlotRef -> ObjRecord(raw, isMutable)
is RecordSlotRef -> ObjRecord(raw, isMutable)
else -> ObjRecord(FrameSlotRef(frame, localIndex), isMutable)
}
)
}
}

44
lynglib/src/commonTest/kotlin/net/sergeych/lyng/OptTest.kt
View File

@ -90,4 +90,48 @@ class OptTest {
}
assertContains(ex.errorMessage, "can't reassign val a")
}
@Test
fun testAssignOpErrorMessageFromExample() = runTest {
val source = Source(
"examples/error1.lyng",
"""
val a = 1
a += 2
""".trimIndent()
)
val ex = assertFailsWith<ScriptError> {
Script.newScope().eval(source)
}
assertContains(ex.errorMessage, "can't reassign val a")
}
@Test
fun testClosuresInLaunchPool() = runTest {
eval($$"""
val result = Set()
val mu = Mutex()
fn doSomething(value) {
delay(100)
println(value)
mu.withLock {
result += value
}
}
val lp = LaunchPool(4, 1000)
for (i in 1 .. 10) {
val ii: Int = i
lp.launch {
doSomething( ii )
}
}
println("all tasks were placed into lauchpool")
lp.closeAndJoin()
println("ALL DONE: $result")
assertEquals((1..10).toSet(), result)
""".trimIndent())
}
}