org.jetbrains.kotlin.ir.backend.js.lower.calls.NativeGetterSetterTransformer.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2020 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.ir.backend.js.lower.calls
import org.jetbrains.kotlin.ir.backend.js.JsIrBackendContext
import org.jetbrains.kotlin.ir.backend.js.utils.isJsNativeGetter
import org.jetbrains.kotlin.ir.backend.js.utils.isJsNativeSetter
import org.jetbrains.kotlin.ir.expressions.IrDynamicOperator
import org.jetbrains.kotlin.ir.expressions.IrExpression
import org.jetbrains.kotlin.ir.expressions.IrFunctionAccessExpression
import org.jetbrains.kotlin.ir.expressions.impl.IrDynamicOperatorExpressionImpl
open class NativeGetterSetterTransformer(val context: JsIrBackendContext) : CallsTransformer {
override fun transformFunctionAccess(call: IrFunctionAccessExpression, doNotIntrinsify: Boolean): IrExpression {
val callee = call.symbol.owner
return when {
callee.isJsNativeGetter() -> call.transformToIndexedRead()
callee.isJsNativeSetter() -> call.transformToIndexedWrite()
// @nativeInvoke is supported separately to simplify processing default arguments,
// it's harder to support using dynamic operator since the last one doesn't allow arguments with holes.
// The feature is implemented in `translateCall` in ir/backend/js/transformers/irToJs/jsAstUtils.kt
// callee.isJsNativeInvoke() -> {}
else -> call
}
}
protected fun IrFunctionAccessExpression.transformToIndexedRead(): IrExpression {
val obj = dispatchReceiver ?: extensionReceiver!!
val propertyName = getValueArgument(0)!!
return IrDynamicOperatorExpressionImpl(
startOffset,
endOffset,
context.irBuiltIns.anyNType,
operator = IrDynamicOperator.ARRAY_ACCESS
).also {
it.receiver = obj
it.arguments.add(propertyName)
}
}
protected fun IrFunctionAccessExpression.transformToIndexedWrite(): IrExpression {
val value = getValueArgument(1)!!
return IrDynamicOperatorExpressionImpl(startOffset, endOffset, type, IrDynamicOperator.EQ).also {
it.receiver = transformToIndexedRead()
it.arguments.add(value)
}
}
}