org.jetbrains.kotlin.backend.wasm.lower.ExplicitlyCastExternalTypesLowering.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
*/
package org.jetbrains.kotlin.backend.wasm.lower
import org.jetbrains.kotlin.backend.wasm.WasmBackendContext
import org.jetbrains.kotlin.backend.wasm.ir2wasm.isExternalType
import org.jetbrains.kotlin.ir.backend.js.ir.JsIrBuilder
import org.jetbrains.kotlin.ir.backend.js.lower.AbstractValueUsageLowering
import org.jetbrains.kotlin.ir.expressions.IrExpression
import org.jetbrains.kotlin.ir.types.IrType
/**
* Insert casts between external and non-external types
*/
class ExplicitlyCastExternalTypesLowering(wasmContext: WasmBackendContext) : AbstractValueUsageLowering(wasmContext) {
override fun IrExpression.useExpressionAsType(actualType: IrType, expectedType: IrType): IrExpression {
val expectedExternal = isExternalType(expectedType)
val actualExternal = isExternalType(actualType)
if (expectedExternal != actualExternal) {
return JsIrBuilder.buildImplicitCast(this, toType = expectedType)
}
return this
}
}