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org.jetbrains.kotlin.asJava.KtLightMethod.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.asJava
import com.intellij.core.JavaCoreBundle
import com.intellij.openapi.util.TextRange
import com.intellij.psi.*
import com.intellij.psi.impl.light.LightMethod
import com.intellij.psi.scope.PsiScopeProcessor
import com.intellij.psi.util.*
import com.intellij.util.IncorrectOperationException
import org.jetbrains.kotlin.idea.KotlinLanguage
import org.jetbrains.kotlin.psi.*
import org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOriginKind
interface KtLightMethod : PsiMethod, KtLightElement {
val isDelegated: Boolean
}
sealed class KtLightMethodImpl(
private val delegate: PsiMethod,
private val lightMethodOrigin: LightMemberOrigin?,
containingClass: KtLightClass
) : LightMethod(delegate.manager, delegate, containingClass), KtLightMethod {
private val origin = lightMethodOrigin?.originalElement as? KtDeclaration
override fun getContainingClass(): KtLightClass = super.getContainingClass() as KtLightClass
private val paramsList: CachedValue by lazy {
val cacheManager = CachedValuesManager.getManager(delegate.project)
cacheManager.createCachedValue({
val parameterBuilder = LightParameterListBuilder(manager, KotlinLanguage.INSTANCE, this)
for ((index, parameter) in delegate.parameterList.parameters.withIndex()) {
parameterBuilder.addParameter(KtLightParameter(parameter, index, this))
}
CachedValueProvider.Result.create(parameterBuilder, PsiModificationTracker.OUT_OF_CODE_BLOCK_MODIFICATION_COUNT)
}, false)
}
private val typeParamsList: CachedValue by lazy {
val cacheManager = CachedValuesManager.getManager(delegate.project)
cacheManager.createCachedValue({
val list = if (origin is KtClassOrObject) {
KotlinLightTypeParameterListBuilder(manager)
}
else if (origin == null) {
delegate.typeParameterList
}
else {
LightClassUtil.buildLightTypeParameterList(this@KtLightMethodImpl, origin)
}
CachedValueProvider.Result.create(list, PsiModificationTracker.OUT_OF_CODE_BLOCK_MODIFICATION_COUNT)
}, false)
}
override fun getNavigationElement(): PsiElement = origin ?: super.getNavigationElement()
override fun getOriginalElement(): PsiElement = origin ?: super.getOriginalElement()
override fun getDelegate() = delegate
override fun getOrigin() = origin
override fun getParent(): PsiElement? = containingClass
override fun getText() = origin?.text ?: ""
override fun getTextRange() = origin?.textRange ?: TextRange.EMPTY_RANGE
override val isDelegated: Boolean
get() = lightMethodOrigin?.originKind == JvmDeclarationOriginKind.DELEGATION
|| lightMethodOrigin?.originKind == JvmDeclarationOriginKind.DELEGATION_TO_DEFAULT_IMPLS
override fun accept(visitor: PsiElementVisitor) {
if (visitor is JavaElementVisitor) {
visitor.visitMethod(this)
}
else {
visitor.visitElement(this)
}
}
override fun setName(name: String): PsiElement? {
val toRename = origin as? PsiNamedElement ?: throwCanNotModify()
toRename.setName(name)
return this
}
override fun delete() {
origin?.let {
if (it.isValid) {
it.delete()
}
} ?: throwCanNotModify()
}
private fun throwCanNotModify(): Nothing {
throw IncorrectOperationException(JavaCoreBundle.message("psi.error.attempt.to.edit.class.file"))
}
override fun getParameterList() = paramsList.value
override fun getTypeParameterList() = typeParamsList.value
override fun getTypeParameters(): Array =
typeParameterList?.let { it.typeParameters } ?: PsiTypeParameter.EMPTY_ARRAY
override fun getSignature(substitutor: PsiSubstitutor): MethodSignature {
if (substitutor == PsiSubstitutor.EMPTY) {
return delegate.getSignature(substitutor)
}
return MethodSignatureBackedByPsiMethod.create(this, substitutor)
}
override fun copy(): PsiElement {
return Factory.create(delegate, lightMethodOrigin?.copy(), containingClass)
}
override fun getUseScope() = origin?.useScope ?: super.getUseScope()
override fun getLanguage() = KotlinLanguage.INSTANCE
override fun processDeclarations(processor: PsiScopeProcessor, state: ResolveState, lastParent: PsiElement?, place: PsiElement): Boolean {
return typeParameters.all { processor.execute(it, state) }
}
override fun isEquivalentTo(another: PsiElement?): Boolean {
if (another is KtLightMethod && origin == another.getOrigin() && delegate == another.getDelegate()) {
return true
}
return super.isEquivalentTo(another)
}
override fun equals(other: Any?): Boolean =
other is KtLightMethod &&
name == other.name &&
origin == other.getOrigin() &&
containingClass == other.containingClass &&
delegate == other.getDelegate()
override fun hashCode(): Int = ((name.hashCode() * 31 + (origin?.hashCode() ?: 0)) * 31 + containingClass.hashCode()) * 31 + delegate.hashCode()
override fun toString(): String = "${this.javaClass.simpleName}:$name"
private class KtLightMethodForDeclaration(
delegate: PsiMethod, origin: LightMemberOrigin?, containingClass: KtLightClass
) : KtLightMethodImpl(delegate, origin, containingClass)
private class KtLightAnnotationMethod(
delegate: PsiAnnotationMethod,
origin: LightMemberOrigin?,
containingClass: KtLightClass
) : KtLightMethodImpl(delegate, origin, containingClass), PsiAnnotationMethod {
override fun getDefaultValue() = getDelegate().defaultValue
override fun getDelegate() = super.getDelegate() as PsiAnnotationMethod
}
companion object Factory {
fun create(
delegate: PsiMethod, origin: LightMemberOrigin?, containingClass: KtLightClass
): KtLightMethodImpl {
return when (delegate) {
is PsiAnnotationMethod -> KtLightAnnotationMethod(delegate, origin, containingClass)
else -> KtLightMethodForDeclaration(delegate, origin, containingClass)
}
}
}
}
fun KtLightMethod.isTraitFakeOverride(): Boolean {
val methodOrigin = this.getOrigin()
if (!(methodOrigin is KtNamedFunction || methodOrigin is KtPropertyAccessor || methodOrigin is KtProperty)) {
return false
}
val parentOfMethodOrigin = PsiTreeUtil.getParentOfType(methodOrigin, KtClassOrObject::class.java)
val thisClassDeclaration = (this.containingClass as KtLightClass).getOrigin()
// Method was generated from declaration in some other trait
return (parentOfMethodOrigin != null && thisClassDeclaration !== parentOfMethodOrigin && KtPsiUtil.isTrait(parentOfMethodOrigin))
}