Before this commit, function with same name but different signature
wasn't counted as name conflict, now it is - just because that exact
check in this place could be too complex and error-prone
Enhancement for KT-27539
This commit fixes the exception attached to the bottom of the message
The problem is that when creating ChangeSignatureProcessor for old PsiMethod
that points to the parameter that is already removed from PSI, some pieces
of platform code run resolution on the light PSI that eventually checks
if the source element is valid.
For KtUltraLightParameter, it inherits "isValid" from LightElement and
the latter is defined as getNavigationElement().isValid(),
while here navigationElement points to already removed parameter,
and marked as invalid.
The simplest solution was to define KtUltraLightParameter::isValid
as it was before ultra-light classes, i.e. checking if parent is valid
(see KtLightElementBase::isValid)
com.intellij.psi.PsiInvalidElementAccessException: Element: class com.intellij.psi.impl.compiled.ClsJavaCodeReferenceElementImpl #JAVA because: File language:Language: JAVA != Provider base language:Language: kotlin
invalidated at: no info
at com.intellij.psi.util.PsiUtilCore.ensureValid(PsiUtilCore.java:482)
at com.intellij.psi.impl.source.PsiClassReferenceType.resolveGenerics(PsiClassReferenceType.java:190)
at com.intellij.psi.impl.source.PsiClassReferenceType.resolve(PsiClassReferenceType.java:138)
at com.intellij.psi.util.PsiUtil.resolveClassInType(PsiUtil.java:445)
at com.intellij.psi.util.PsiUtil.convertAnonymousToBaseType(PsiUtil.java:484)
at com.intellij.psi.impl.light.LightTypeElement.<init>(LightTypeElement.java:33)
at com.intellij.psi.impl.PsiElementFactoryImpl.createTypeElement(PsiElementFactoryImpl.java:142)
at com.intellij.refactoring.changeSignature.JavaChangeInfoImpl.fillOldParams(JavaChangeInfoImpl.java:218)
at com.intellij.refactoring.changeSignature.JavaChangeInfoImpl.<init>(JavaChangeInfoImpl.java:127)
at com.intellij.refactoring.changeSignature.JavaChangeInfoImpl.<init>(JavaChangeInfoImpl.java:86)
at com.intellij.refactoring.changeSignature.ChangeSignatureProcessor.generateChangeInfo(ChangeSignatureProcessor.java:121)
at com.intellij.refactoring.changeSignature.ChangeSignatureProcessor.<init>(ChangeSignatureProcessor.java:88)
at org.jetbrains.kotlin.idea.refactoring.changeSignature.KotlinChangeInfo$getOrCreateJavaChangeInfos$3.invoke(KotlinChangeInfo.kt:400)
at org.jetbrains.kotlin.idea.refactoring.changeSignature.KotlinChangeInfo$getOrCreateJavaChangeInfos$5.invoke(KotlinChangeInfo.kt:469)
at org.jetbrains.kotlin.idea.refactoring.changeSignature.KotlinChangeInfo.getOrCreateJavaChangeInfos(KotlinChangeInfo.kt:498)
at org.jetbrains.kotlin.idea.refactoring.changeSignature.KotlinChangeSignatureUsageProcessor.processUsage(KotlinChangeSignatureUsageProcessor.kt:847)
at com.intellij.refactoring.changeSignature.ChangeSignatureProcessorBase.doChangeSignature(ChangeSignatureProcessorBase.java:218)
Nikolay Krasko