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IR: IMPLICIT_DYNAMIC_CAST

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Generate IMPLICIT_DYNAMIC_CAST for implicit casts from `dynamic` to `T`
This commit is contained in:
Dmitry Petrov
2019-04-16 12:52:22 +03:00
parent 422c13bd03
commit 760806a1ac
11 changed files with 79 additions and 50 deletions
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compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/lower/TypeOperatorLowering.kt
+6
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@@ -69,6 +69,7 @@ class TypeOperatorLowering(val context: JsIrBackendContext) : FileLoweringPass {
return when (expression.operator) {
IrTypeOperator.IMPLICIT_CAST -> lowerImplicitCast(expression)
IrTypeOperator.IMPLICIT_DYNAMIC_CAST -> lowerImplicitDynamicCast(expression)
IrTypeOperator.IMPLICIT_COERCION_TO_UNIT -> lowerCoercionToUnit(expression)
IrTypeOperator.IMPLICIT_INTEGER_COERCION -> lowerIntegerCoercion(expression, data)
IrTypeOperator.IMPLICIT_NOTNULL -> lowerImplicitNotNull(expression, data)
@@ -122,6 +123,11 @@ class TypeOperatorLowering(val context: JsIrBackendContext) : FileLoweringPass {
argument
}
private fun lowerImplicitDynamicCast(expression: IrTypeOperatorCall) = expression.run {
assert(operator == IrTypeOperator.IMPLICIT_DYNAMIC_CAST)
argument
}
// Note: native `instanceOf` is not used which is important because of null-behaviour
private fun advancedCheckRequired(type: IrType) = type.isInterface() ||
type.isArray() ||