.kotlin.kotlin-compiler.1.2.71.source-code.KCallableNamePropertyLowering.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2017 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.backend.common.lower
import org.jetbrains.kotlin.backend.common.BackendContext
import org.jetbrains.kotlin.backend.common.FileLoweringPass
import org.jetbrains.kotlin.builtins.functions.FunctionClassDescriptor
import org.jetbrains.kotlin.builtins.getFunctionalClassKind
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
import org.jetbrains.kotlin.ir.builders.IrBuilderWithScope
import org.jetbrains.kotlin.ir.builders.IrGeneratorContextBase
import org.jetbrains.kotlin.ir.builders.Scope
import org.jetbrains.kotlin.ir.declarations.IrFile
import org.jetbrains.kotlin.ir.expressions.IrCall
import org.jetbrains.kotlin.ir.expressions.IrCallableReference
import org.jetbrains.kotlin.ir.expressions.IrExpression
import org.jetbrains.kotlin.ir.expressions.impl.IrCompositeImpl
import org.jetbrains.kotlin.ir.expressions.impl.IrConstImpl
import org.jetbrains.kotlin.ir.symbols.IrSymbol
import org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid
import org.jetbrains.kotlin.ir.visitors.transformChildrenVoid
import org.jetbrains.kotlin.resolve.DescriptorUtils
import org.jetbrains.kotlin.types.KotlinType
class KCallableNamePropertyLowering(val context: BackendContext) : FileLoweringPass {
override fun lower(irFile: IrFile) {
irFile.transformChildrenVoid(KCallableNamePropertyTransformer(this))
}
}
private class KCallableNamePropertyTransformer(val lower: KCallableNamePropertyLowering) : IrElementTransformerVoid() {
override fun visitCall(expression: IrCall): IrExpression {
val callableReference = expression.dispatchReceiver as? IrCallableReference ?: return expression
//TODO rewrite checking
val directMember = DescriptorUtils.getDirectMember(expression.descriptor)
val classDescriptor = directMember.containingDeclaration as? ClassDescriptor ?: return expression
if (!classDescriptor.defaultType.isKFunctionType) return expression
if (directMember.name.asString() != "name") return expression
val receiver = callableReference.dispatchReceiver ?: callableReference.extensionReceiver
return lower.context.createIrBuilder(expression.symbol, expression.startOffset, expression.endOffset).run {
IrCompositeImpl(startOffset, endOffset, context.irBuiltIns.stringType).apply {
receiver?.let {
//put receiver for bound callable reference
statements.add(it)
}
statements.add(
IrConstImpl.string(
expression.startOffset,
expression.endOffset,
context.irBuiltIns.stringType,
callableReference.descriptor.name.asString()
)
)
}
}
}
//TODO move all to common utils
val KotlinType.isKFunctionType: Boolean
get() {
val kind = constructor.declarationDescriptor?.getFunctionalClassKind()
return kind == FunctionClassDescriptor.Kind.KFunction
}
fun BackendContext.createIrBuilder(
symbol: IrSymbol,
startOffset: Int = UNDEFINED_OFFSET,
endOffset: Int = UNDEFINED_OFFSET
) =
DeclarationIrBuilder(this, symbol, startOffset, endOffset)
class DeclarationIrBuilder(
backendContext: BackendContext,
symbol: IrSymbol,
startOffset: Int = UNDEFINED_OFFSET, endOffset: Int = UNDEFINED_OFFSET
) : IrBuilderWithScope(
IrLoweringContext(backendContext),
Scope(symbol),
startOffset,
endOffset
)
class IrLoweringContext(backendContext: BackendContext) : IrGeneratorContextBase(backendContext.irBuiltIns)
}