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Implement class cast interpretation

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This commit is contained in:
Ivan Kylchik
2020-01-23 15:45:08 +03:00
parent a25896bf6a
commit 0ef34dcf53
1 changed files with 23 additions and 3 deletions
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compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/interpreter/IrInterpreter.kt
+23 -3
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@@ -29,6 +29,7 @@ class IrInterpreter(irModule: IrModuleFragment) {
private val irBuiltIns = irModule.irBuiltins
private val irExceptions = irModule.files.flatMap { it.declarations }.filterIsInstance<IrClass>()
.filter { it.isSubclassOf(irBuiltIns.throwableClass.owner) }
private val classCastException = irExceptions.first { it.name.asString() == ClassCastException::class.java.simpleName }
private fun Any?.getType(defaultType: IrType): IrType {
return when (this) {
@@ -132,6 +133,8 @@ class IrInterpreter(irModule: IrModuleFragment) {
}
// this method is used to get stack trace after exception
// OR
// TODO maybe use suspend
private fun interpretFunction(irFunction: IrFunctionImpl, data: Frame): Code {
return irFunction.body?.interpret(data) ?: throw AssertionError("Ir function must be with body")
}
@@ -454,11 +457,28 @@ class IrInterpreter(irModule: IrModuleFragment) {
private fun interpretTypeOperatorCall(expression: IrTypeOperatorCall, data: Frame): Code {
return when (expression.operator) {
IrTypeOperator.IMPLICIT_COERCION_TO_UNIT -> {
IrTypeOperator.IMPLICIT_COERCION_TO_UNIT, IrTypeOperator.IMPLICIT_DYNAMIC_CAST -> {
expression.argument.interpret(data)
}
IrTypeOperator.CAST, IrTypeOperator.IMPLICIT_DYNAMIC_CAST -> {
expression.argument.interpret(data) //todo check cast correctness
IrTypeOperator.CAST, IrTypeOperator.IMPLICIT_CAST -> {
val code = expression.argument.interpret(data)
if (!data.peekReturnValue().irClass.defaultType.isSubtypeOf(expression.type, irBuiltIns)) {
val convertibleClassName = data.popReturnValue().irClass.fqNameForIrSerialization
val castClassName = expression.type.classOrNull?.owner?.fqNameForIrSerialization
val message = "$convertibleClassName cannot be cast to $castClassName"
data.pushReturnValue(Wrapper(ClassCastException(message), classCastException))
Code.EXCEPTION
} else {
code
}
}
IrTypeOperator.SAFE_CAST -> {
val code = expression.argument.interpret(data)
if (!data.peekReturnValue().irClass.defaultType.isSubtypeOf(expression.type, irBuiltIns)) {
data.popReturnValue()
data.pushReturnValue(null.toState(irBuiltIns.nothingType))
}
code
}
else -> TODO("${expression.operator} not implemented")
}