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/*
* Copyright 2010-2016 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.psi2ir.generators
import org.jetbrains.kotlin.descriptors.*
import org.jetbrains.kotlin.ir.declarations.*
import org.jetbrains.kotlin.ir.declarations.impl.IrErrorDeclarationImpl
import org.jetbrains.kotlin.ir.declarations.impl.IrPropertyImpl
import org.jetbrains.kotlin.ir.declarations.impl.IrTypeAliasImpl
import org.jetbrains.kotlin.ir.expressions.IrExpressionBody
import org.jetbrains.kotlin.ir.symbols.IrSymbol
import org.jetbrains.kotlin.ir.util.withScope
import org.jetbrains.kotlin.psi.*
import org.jetbrains.kotlin.psi.psiUtil.endOffset
import org.jetbrains.kotlin.psi.psiUtil.startOffset
import org.jetbrains.kotlin.psi2ir.endOffsetOrUndefined
import org.jetbrains.kotlin.psi2ir.startOffsetOrUndefined
import org.jetbrains.kotlin.resolve.BindingContext
import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
class DeclarationGenerator(override val context: GeneratorContext) : Generator {
fun generateMemberDeclaration(ktDeclaration: KtDeclaration): IrDeclaration =
when (ktDeclaration) {
is KtNamedFunction ->
FunctionGenerator(this).generateFunctionDeclaration(ktDeclaration)
is KtProperty ->
PropertyGenerator(this).generatePropertyDeclaration(ktDeclaration)
is KtClassOrObject ->
generateClassOrObjectDeclaration(ktDeclaration)
is KtTypeAlias ->
generateTypeAliasDeclaration(ktDeclaration)
else ->
IrErrorDeclarationImpl(
ktDeclaration.startOffset, ktDeclaration.endOffset,
getOrFail(BindingContext.DECLARATION_TO_DESCRIPTOR, ktDeclaration)
)
}
fun generateClassMemberDeclaration(ktDeclaration: KtDeclaration, classDescriptor: ClassDescriptor): IrDeclaration =
when (ktDeclaration) {
is KtAnonymousInitializer ->
AnonymousInitializerGenerator(this).generateAnonymousInitializerDeclaration(ktDeclaration, classDescriptor)
is KtSecondaryConstructor ->
FunctionGenerator(this).generateSecondaryConstructor(ktDeclaration)
is KtEnumEntry ->
generateEnumEntryDeclaration(ktDeclaration)
else ->
generateMemberDeclaration(ktDeclaration)
}
private fun generateEnumEntryDeclaration(ktEnumEntry: KtEnumEntry): IrEnumEntry =
ClassGenerator(this).generateEnumEntry(ktEnumEntry)
fun generateClassOrObjectDeclaration(ktClassOrObject: KtClassOrObject): IrClass =
ClassGenerator(this).generateClass(ktClassOrObject)
fun generateTypeAliasDeclaration(ktDeclaration: KtTypeAlias): IrDeclaration =
IrTypeAliasImpl(ktDeclaration.startOffset, ktDeclaration.endOffset, IrDeclarationOrigin.DEFINED,
getOrFail(BindingContext.TYPE_ALIAS, ktDeclaration))
fun generateTypeParameterDeclarations(
irTypeParametersOwner: IrTypeParametersContainer,
from: List
) {
from.mapTo(irTypeParametersOwner.typeParameters) { typeParameterDescriptor ->
val ktTypeParameterDeclaration = DescriptorToSourceUtils.getSourceFromDescriptor(typeParameterDescriptor)
val startOffset = ktTypeParameterDeclaration.startOffsetOrUndefined
val endOffset = ktTypeParameterDeclaration.endOffsetOrUndefined
context.symbolTable.declareTypeParameter(startOffset, endOffset, IrDeclarationOrigin.DEFINED, typeParameterDescriptor)
}
}
fun generateInitializerBody(scopeOwnerSymbol: IrSymbol, ktBody: KtExpression): IrExpressionBody =
createBodyGenerator(scopeOwnerSymbol).generateExpressionBody(ktBody)
fun generateFakeOverrideDeclaration(memberDescriptor: CallableMemberDescriptor, ktElement: KtElement): IrDeclaration {
assert(memberDescriptor.kind == CallableMemberDescriptor.Kind.FAKE_OVERRIDE) {
"Fake override expected: $memberDescriptor"
}
return when (memberDescriptor) {
is FunctionDescriptor ->
generateFakeOverrideFunction(memberDescriptor, ktElement)
is PropertyDescriptor ->
generateFakeOverrideProperty(memberDescriptor, ktElement)
else ->
throw AssertionError("Unexpected member descriptor: $memberDescriptor")
}
}
private fun generateFakeOverrideProperty(propertyDescriptor: PropertyDescriptor, ktElement: KtElement): IrProperty =
IrPropertyImpl(
ktElement.startOffsetOrUndefined, ktElement.endOffsetOrUndefined,
IrDeclarationOrigin.FAKE_OVERRIDE,
false,
propertyDescriptor,
if (propertyDescriptor.getter == null)
context.symbolTable.declareField(
ktElement.startOffsetOrUndefined, ktElement.endOffsetOrUndefined, IrDeclarationOrigin.FAKE_OVERRIDE,
propertyDescriptor
)
else null,
propertyDescriptor.getter?.let { generateFakeOverrideFunction(it, ktElement) },
propertyDescriptor.setter?.let { generateFakeOverrideFunction(it, ktElement) }
)
private fun generateFakeOverrideFunction(functionDescriptor: FunctionDescriptor, ktElement: KtElement): IrFunction =
FunctionGenerator(this).generateFakeOverrideFunction(functionDescriptor, ktElement)
}
abstract class DeclarationGeneratorExtension(val declarationGenerator: DeclarationGenerator) : Generator {
override val context: GeneratorContext get() = declarationGenerator.context
inline fun T.buildWithScope(builder: (T) -> Unit): T =
also { irDeclaration ->
context.symbolTable.withScope(irDeclaration.descriptor) {
builder(irDeclaration)
}
}
}
fun Generator.createBodyGenerator(scopeOwnerSymbol: IrSymbol) =
BodyGenerator(scopeOwnerSymbol, context)
