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org.jetbrains.kotlin.asJava.elements.KtLightMethodImpl.kt Maven / Gradle / Ivy
/*
* 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.asJava.elements
import com.intellij.psi.*
import com.intellij.psi.impl.compiled.ClsTypeElementImpl
import com.intellij.psi.scope.PsiScopeProcessor
import com.intellij.psi.util.*
import org.jetbrains.kotlin.asJava.LightClassUtil
import org.jetbrains.kotlin.asJava.builder.LightMemberOrigin
import org.jetbrains.kotlin.asJava.builder.LightMemberOriginForDeclaration
import org.jetbrains.kotlin.asJava.builder.MemberIndex
import org.jetbrains.kotlin.asJava.builder.memberIndex
import org.jetbrains.kotlin.asJava.classes.KtLightClass
import org.jetbrains.kotlin.asJava.classes.cannotModify
import org.jetbrains.kotlin.asJava.classes.lazyPub
import org.jetbrains.kotlin.asJava.propertyNameByAccessor
import org.jetbrains.kotlin.asJava.unwrapped
import org.jetbrains.kotlin.psi.*
import org.jetbrains.kotlin.psi.psiUtil.getStrictParentOfType
import org.jetbrains.kotlin.resolve.DescriptorUtils
import org.jetbrains.kotlin.resolve.jvm.KotlinJavaPsiFacade
class KtLightMethodImpl private constructor(
computeRealDelegate: () -> PsiMethod,
lightMemberOrigin: LightMemberOrigin?,
containingClass: KtLightClass,
private val dummyDelegate: PsiMethod? = null
) : KtLightMemberImpl(computeRealDelegate, lightMemberOrigin, containingClass, dummyDelegate), KtLightMethod {
private val returnTypeElem by lazyPub {
val delegateTypeElement = clsDelegate.returnTypeElement as? ClsTypeElementImpl
delegateTypeElement?.let { ClsTypeElementImpl(this, it.canonicalText, /*ClsTypeElementImpl.VARIANCE_NONE */ 0.toChar()) }
}
private val calculatingReturnType = ThreadLocal()
private val paramsList: PsiParameterList by lazyPub {
KtLightParameterList(this, dummyDelegate?.parameterList?.parametersCount ?: clsDelegate.parameterList.parametersCount) {
clsDelegate.parameterList.parameters.mapIndexed { index, clsParameter -> KtLightParameter(clsParameter, index, this@KtLightMethodImpl) }
}
}
private val typeParamsList: CachedValue by lazyPub {
val cacheManager = CachedValuesManager.getManager(clsDelegate.project)
cacheManager.createCachedValue(
{
val origin = (lightMemberOrigin as? LightMemberOriginForDeclaration)?.originalElement
val list = if (origin != null) {
if (origin is KtClassOrObject) {
KotlinLightTypeParameterListBuilder(manager)
}
else {
LightClassUtil.buildLightTypeParameterList(this@KtLightMethodImpl, origin)
}
}
else {
clsDelegate.typeParameterList
}
CachedValueProvider.Result.create(list, PsiModificationTracker.OUT_OF_CODE_BLOCK_MODIFICATION_COUNT)
}, false
)
}
override fun accept(visitor: PsiElementVisitor) {
if (visitor is JavaElementVisitor) {
visitor.visitMethod(this)
}
else {
visitor.visitElement(this)
}
}
override fun setName(name: String): PsiElement? {
val jvmNameAnnotation = modifierList.findAnnotation(DescriptorUtils.JVM_NAME.asString())
val newNameForOrigin = propertyNameByAccessor(name, this) ?: name
if (newNameForOrigin == kotlinOrigin?.name) {
jvmNameAnnotation?.delete()
return this
}
val nameExpression = jvmNameAnnotation?.findAttributeValue("name")?.unwrapped as? KtStringTemplateExpression
if (nameExpression != null) {
nameExpression.replace(KtPsiFactory(this).createStringTemplate(name))
}
else {
val toRename = kotlinOrigin as? PsiNamedElement ?: cannotModify()
toRename.setName(newNameForOrigin)
}
return this
}
override fun delete() {
kotlinOrigin?.let {
if (it.isValid) {
it.delete()
}
} ?: cannotModify()
}
override fun getModifierList(): PsiModifierList {
if (calculatingReturnType.get() == true) {
return KotlinJavaPsiFacade.getInstance(project).emptyModifierList
}
return super.getModifierList()!!
}
override fun getParameterList() = paramsList
override fun getTypeParameterList() = typeParamsList.value
override fun getTypeParameters(): Array =
typeParameterList?.typeParameters ?: PsiTypeParameter.EMPTY_ARRAY
override fun getSignature(substitutor: PsiSubstitutor): MethodSignature {
if (substitutor == PsiSubstitutor.EMPTY) {
return clsDelegate.getSignature(substitutor)
}
return MethodSignatureBackedByPsiMethod.create(this, substitutor)
}
override fun copy(): PsiElement {
return Factory.create(clsDelegate, lightMemberOrigin?.copy(), containingClass)
}
override fun processDeclarations(processor: PsiScopeProcessor, state: ResolveState, lastParent: PsiElement?, place: PsiElement): Boolean {
return typeParameters.all { processor.execute(it, state) }
}
private val _memberIndex: MemberIndex?
get() = (dummyDelegate ?: clsDelegate).memberIndex
/* comparing origin and member index should be enough to determine equality:
for compiled elements origin contains delegate
for source elements index is unique to each member
*/
override fun equals(other: Any?): Boolean =
this === other ||
(other is KtLightMethodImpl &&
this.name == other.name &&
this.containingClass == other.containingClass &&
this.lightMemberOrigin == other.lightMemberOrigin &&
this._memberIndex == other._memberIndex)
override fun hashCode(): Int = ((getName().hashCode() * 31 + (lightMemberOrigin?.hashCode() ?: 0)) * 31 + containingClass.hashCode()) * 31 + (_memberIndex?.hashCode() ?: 0)
override fun getDefaultValue() = (clsDelegate as? PsiAnnotationMethod)?.defaultValue
// override getReturnType() so return type resolves to type parameters of this method not delegate's
// which is relied upon by java type inference
override fun getReturnTypeElement(): PsiTypeElement? = returnTypeElem
override fun getReturnType(): PsiType? {
calculatingReturnType.set(true)
try {
return returnTypeElement?.type
}
finally {
calculatingReturnType.set(false)
}
}
companion object Factory {
private fun adjustMethodOrigin(origin: LightMemberOriginForDeclaration?): LightMemberOriginForDeclaration? {
val originalElement = origin?.originalElement
if (originalElement is KtPropertyAccessor) {
return origin.copy(originalElement.getStrictParentOfType()!!, origin.originKind)
}
return origin
}
fun create(
delegate: PsiMethod, origin: LightMemberOrigin?, containingClass: KtLightClass
): KtLightMethodImpl {
return KtLightMethodImpl({ delegate}, origin, containingClass)
}
fun lazy(
dummyDelegate: PsiMethod?,
containingClass: KtLightClass,
origin: LightMemberOriginForDeclaration?,
computeRealDelegate: () -> PsiMethod
): KtLightMethodImpl {
return KtLightMethodImpl(computeRealDelegate, origin, containingClass, dummyDelegate)
}
fun fromClsMethods(delegateClass: PsiClass, containingClass: KtLightClass) = delegateClass.methods.map {
KtLightMethodImpl.create(it, getOrigin(it), containingClass)
}
fun getOrigin(method: PsiMethod) = adjustMethodOrigin(getMemberOrigin(method))
}
override fun getThrowsList() = clsDelegate.throwsList
override fun hasTypeParameters() = clsDelegate.hasTypeParameters()
override fun isVarArgs() = (dummyDelegate ?: clsDelegate).isVarArgs
override fun isConstructor() = dummyDelegate?.isConstructor ?: clsDelegate.isConstructor
override fun getHierarchicalMethodSignature() = clsDelegate.hierarchicalMethodSignature
override fun findSuperMethodSignaturesIncludingStatic(checkAccess: Boolean) = clsDelegate.findSuperMethodSignaturesIncludingStatic(checkAccess)
override fun getBody() = null
override fun findDeepestSuperMethod() = clsDelegate.findDeepestSuperMethod()
override fun findDeepestSuperMethods() = clsDelegate.findDeepestSuperMethods()
override fun findSuperMethods() = clsDelegate.findSuperMethods()
override fun findSuperMethods(checkAccess: Boolean) = clsDelegate.findSuperMethods(checkAccess)
override fun findSuperMethods(parentClass: PsiClass?) = clsDelegate.findSuperMethods(parentClass)
}
fun KtLightMethod.isTraitFakeOverride(): Boolean {
val methodOrigin = this.kotlinOrigin
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).kotlinOrigin
// Method was generated from declaration in some other trait
return (parentOfMethodOrigin != null && thisClassDeclaration !== parentOfMethodOrigin && KtPsiUtil.isTrait(parentOfMethodOrigin))
}
fun KtLightMethod.isAccessor(getter: Boolean): Boolean {
val origin = kotlinOrigin as? KtCallableDeclaration ?: return false
if (origin !is KtProperty && origin !is KtParameter) return false
val expectedParametersCount = (if (getter) 0 else 1) + (if (origin.receiverTypeReference != null) 1 else 0)
return parameterList.parametersCount == expectedParametersCount
}
val KtLightMethod.isGetter: Boolean
get() = isAccessor(true)
val KtLightMethod.isSetter: Boolean
get() = isAccessor(false)
