org.jetbrains.kotlin.codegen.codegenUtil.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2015 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.codegen
import org.jetbrains.kotlin.codegen.context.FieldOwnerContext
import org.jetbrains.kotlin.codegen.intrinsics.TypeIntrinsics
import org.jetbrains.kotlin.codegen.state.GenerationState
import org.jetbrains.kotlin.descriptors.PropertyDescriptor
import org.jetbrains.kotlin.load.java.BuiltinMethodsWithSpecialGenericSignature.SpecialSignatureInfo
import org.jetbrains.kotlin.load.java.JvmAbi
import org.jetbrains.kotlin.psi.KtObjectDeclaration
import org.jetbrains.kotlin.psi.KtProperty
import org.jetbrains.kotlin.renderer.DescriptorRenderer
import org.jetbrains.kotlin.resolve.BindingContext
import org.jetbrains.kotlin.types.ErrorUtils
import org.jetbrains.kotlin.types.KotlinType
import org.jetbrains.kotlin.types.TypeUtils
import org.jetbrains.org.objectweb.asm.Label
import org.jetbrains.org.objectweb.asm.Type
import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter
fun generateIsCheck(
v: InstructionAdapter,
kotlinType: KotlinType,
asmType: Type
) {
if (TypeUtils.isNullableType(kotlinType)) {
val nope = Label()
val end = Label()
with(v) {
dup()
ifnull(nope)
TypeIntrinsics.instanceOf(this, kotlinType, asmType)
goTo(end)
mark(nope)
pop()
iconst(1)
mark(end)
}
}
else {
TypeIntrinsics.instanceOf(v, kotlinType, asmType)
}
}
fun generateAsCast(
v: InstructionAdapter,
kotlinType: KotlinType,
asmType: Type,
isSafe: Boolean
) {
if (!isSafe) {
if (!TypeUtils.isNullableType(kotlinType)) {
generateNullCheckForNonSafeAs(v, kotlinType)
}
}
else {
with(v) {
dup()
TypeIntrinsics.instanceOf(v, kotlinType, asmType)
val ok = Label()
ifne(ok)
pop()
aconst(null)
mark(ok)
}
}
TypeIntrinsics.checkcast(v, kotlinType, asmType, isSafe)
}
private fun generateNullCheckForNonSafeAs(
v: InstructionAdapter,
type: KotlinType
) {
with(v) {
dup()
val nonnull = Label()
ifnonnull(nonnull)
AsmUtil.genThrow(v, "kotlin/TypeCastException", "null cannot be cast to non-null type " + DescriptorRenderer.FQ_NAMES_IN_TYPES.renderType(type))
mark(nonnull)
}
}
fun SpecialSignatureInfo.replaceValueParametersIn(sourceSignature: String?): String?
= valueParametersSignature?.let { sourceSignature?.replace("^\\(.*\\)".toRegex(), "($it)") }
fun populateCompanionBackingFieldNamesToOuterContextIfNeeded(companion: KtObjectDeclaration, outerContext: FieldOwnerContext<*>, state: GenerationState) {
val descriptor = state.bindingContext.get(BindingContext.CLASS, companion)
if (descriptor == null || ErrorUtils.isError(descriptor)) {
return
}
if (!JvmAbi.isCompanionObjectWithBackingFieldsInOuter(descriptor)) {
return
}
val properties = companion.declarations.filterIsInstance()
properties.forEach {
val variableDescriptor = state.bindingContext.get(BindingContext.VARIABLE, it)
if (variableDescriptor is PropertyDescriptor) {
outerContext.getFieldName(variableDescriptor, it.hasDelegate())
}
}
}