Consider the following code:
```
fun test(a: List<String>) {
a.first()
}
```
The dispatch receiver type of `first` in this case is `List<T>` before
this change. After this change, it's `List<String>`.
In addition, this change also replace the dispatch receiver type with
the more specific type if available. For example, consider the following
```
class MyList: ArrayList<String>()
fun test(a: MyList) {
a.get(0)
}
```
The dispatch receiver type of `get` is `MyList`, instead of
`ArrayList<String>`. That is, a fake override is created in this case.
Various HL API needs to create fake override for symbols in libraries.
Without module data it may fail. Following exception is an example:
java.lang.IllegalStateException: Module data is not registered in Libraries session
at org.jetbrains.kotlin.fir.FirModuleDataKt.getModuleData(FirModuleData.kt:80)
at org.jetbrains.kotlin.fir.scopes.impl.FirFakeOverrideGenerator.createCopyForFirProperty(FirFakeOverrideGenerator.kt:297)
at org.jetbrains.kotlin.fir.scopes.impl.FirFakeOverrideGenerator.createCopyForFirProperty$default(FirFakeOverrideGenerator.kt:281)
at org.jetbrains.kotlin.fir.scopes.impl.FirFakeOverrideGenerator.createSubstitutionOverrideProperty(FirFakeOverrideGenerator.kt:271)
at org.jetbrains.kotlin.fir.scopes.impl.FirFakeOverrideGenerator.createSubstitutionOverrideProperty$default(FirFakeOverrideGenerator.kt:254)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassSubstitutionScope.createSubstitutionOverrideProperty(FirClassSubstitutionScope.kt:211)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassSubstitutionScope.access$createSubstitutionOverrideProperty(FirClassSubstitutionScope.kt:30)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassSubstitutionScope$processPropertiesByName$1.invoke(FirClassSubstitutionScope.kt:84)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassSubstitutionScope$processPropertiesByName$1.invoke(FirClassSubstitutionScope.kt:81)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassUseSiteMemberScope$processPropertiesByName$1.invoke(FirClassUseSiteMemberScope.kt:32)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassUseSiteMemberScope$processPropertiesByName$1.invoke(FirClassUseSiteMemberScope.kt:25)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassDeclaredMemberScope.processPropertiesByName(FirClassDeclaredMemberScope.kt:115)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassUseSiteMemberScope.processPropertiesByName(FirClassUseSiteMemberScope.kt:25)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassSubstitutionScope.processPropertiesByName(FirClassSubstitutionScope.kt:81)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassUseSiteMemberScope.computeDirectOverridden(FirClassUseSiteMemberScope.kt:45)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassUseSiteMemberScope.access$computeDirectOverridden(FirClassUseSiteMemberScope.kt:17)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassUseSiteMemberScope$processPropertiesByName$1.invoke(FirClassUseSiteMemberScope.kt:28)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassUseSiteMemberScope$processPropertiesByName$1.invoke(FirClassUseSiteMemberScope.kt:25)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassDeclaredMemberScope.processPropertiesByName(FirClassDeclaredMemberScope.kt:115)
at org.jetbrains.kotlin.fir.scopes.impl.FirClassUseSiteMemberScope.processPropertiesByName(FirClassUseSiteMemberScope.kt:25)
at org.jetbrains.kotlin.idea.frontend.api.fir.components.KtFirSymbolDeclarationOverridesProvider.processCallableByName(KtFirSymbolDeclarationOverridesProvider.kt:58)
at org.jetbrains.kotlin.idea.frontend.api.fir.components.KtFirSymbolDeclarationOverridesProvider.access$processCallableByName(KtFirSymbolDeclarationOverridesProvider.kt:29)
at org.jetbrains.kotlin.idea.frontend.api.fir.components.KtFirSymbolDeclarationOverridesProvider$getDirectlyOverriddenSymbols$$inlined$processOverrides$1.invoke(FirRefWithValidityCheck.kt:105)
at org.jetbrains.kotlin.idea.frontend.api.fir.components.KtFirSymbolDeclarationOverridesProvider$getDirectlyOverriddenSymbols$$inlined$processOverrides$1.invoke(FirRefWithValidityCheck.kt:33)
at org.jetbrains.kotlin.idea.fir.low.level.api.api.LowLevelFirApiFacadeKt.withFirDeclaration(LowLevelFirApiFacade.kt:129)
at org.jetbrains.kotlin.idea.frontend.api.fir.components.KtFirSymbolDeclarationOverridesProvider.getDirectlyOverriddenSymbols(KtFirSymbolDeclarationOverridesProvider.kt:253)
at org.jetbrains.kotlin.idea.frontend.api.components.KtSymbolDeclarationOverridesProviderMixIn$DefaultImpls.getDirectlyOverriddenSymbols(KtSymbolDeclarationOverridesProvider.kt:45)
at org.jetbrains.kotlin.idea.frontend.api.KtAnalysisSession.getDirectlyOverriddenSymbols(KtAnalysisSession.kt:29)
at org.jetbrains.kotlin.idea.completion.weighers.CallableWeigher.addWeight(CallableWeigher.kt:28)
at org.jetbrains.kotlin.idea.completion.weighers.Weighers.applyWeighsToLookupElement(Weighers.kt:61)
at org.jetbrains.kotlin.idea.completion.contributors.FirCompletionContributorBase.applyWeighers(FirCompletionContributorBase.kt:115)
at org.jetbrains.kotlin.idea.completion.contributors.FirCompletionContributorBase.addCallableSymbolToCompletion(FirCompletionContributorBase.kt:101)
at org.jetbrains.kotlin.idea.completion.contributors.FirCallableCompletionContributor.collectDotCompletionForCallableReceiver(FirCallableCompletionContributor.kt:189)
at org.jetbrains.kotlin.idea.completion.contributors.FirCallableCompletionContributor.collectDotCompletion(FirCallableCompletionContributor.kt:145)
at org.jetbrains.kotlin.idea.completion.contributors.FirCallableCompletionContributor.complete(FirCallableCompletionContributor.kt:79)
at org.jetbrains.kotlin.idea.completion.contributors.FirCallableCompletionContributor.complete(FirCallableCompletionContributor.kt:31)
at org.jetbrains.kotlin.idea.completion.contributors.FirCompletionContributorBaseKt.complete(FirCompletionContributorBase.kt:124)
at org.jetbrains.kotlin.idea.completion.Completions.complete(Completions.kt:18)
at org.jetbrains.kotlin.idea.completion.KotlinFirCompletionProvider.complete(KotlinFirCompletionContributor.kt:81)
at org.jetbrains.kotlin.idea.completion.KotlinFirCompletionProvider.addCompletions(KotlinFirCompletionContributor.kt:70)
at com.intellij.codeInsight.completion.CompletionProvider.addCompletionVariants(CompletionProvider.java:34)
at com.intellij.codeInsight.completion.CompletionContributor.fillCompletionVariants(CompletionContributor.java:156)
at com.intellij.codeInsight.completion.CompletionService.getVariantsFromContributors(CompletionService.java:77)
at com.intellij.codeInsight.completion.CompletionService.getVariantsFromContributors(CompletionService.java:60)
at com.intellij.codeInsight.completion.CompletionService.performCompletion(CompletionService.java:133)
at com.intellij.codeInsight.completion.BaseCompletionService.performCompletion(BaseCompletionService.java:41)
at com.intellij.codeInsight.completion.CompletionProgressIndicator.lambda$calculateItems$12(CompletionProgressIndicator.java:863)
at com.intellij.util.indexing.FileBasedIndex.lambda$ignoreDumbMode$0(FileBasedIndex.java:163)
at com.intellij.openapi.util.RecursionManager$1.computePreventingRecursion(RecursionManager.java:111)
at com.intellij.util.indexing.FileBasedIndexEx.ignoreDumbMode(FileBasedIndexEx.java:588)
at com.intellij.util.indexing.FileBasedIndex.ignoreDumbMode(FileBasedIndex.java:162)
at com.intellij.util.indexing.DumbModeAccessType.ignoreDumbMode(DumbModeAccessType.java:43)
at com.intellij.codeInsight.completion.CompletionProgressIndicator.calculateItems(CompletionProgressIndicator.java:859)
at com.intellij.codeInsight.completion.CompletionProgressIndicator.runContributors(CompletionProgressIndicator.java:847)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.lambda$startContributorThread$6(CodeCompletionHandlerBase.java:353)
at com.intellij.codeInsight.completion.AsyncCompletion.lambda$tryReadOrCancel$5(CompletionThreading.java:172)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1078)
at com.intellij.codeInsight.completion.AsyncCompletion.tryReadOrCancel(CompletionThreading.java:170)
at com.intellij.codeInsight.completion.CodeCompletionHandlerBase.lambda$startContributorThread$7(CodeCompletionHandlerBase.java:345)
at com.intellij.codeInsight.completion.AsyncCompletion.lambda$startThread$0(CompletionThreading.java:95)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:183)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:705)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:647)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:63)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:170)
at com.intellij.codeInsight.completion.AsyncCompletion.lambda$startThread$1(CompletionThreading.java:91)
at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:265)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:264)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java)
This is useful for quickfixes offering casts. We don't want to offer
user to cast incompatible types.
Also, explicitly allow compare to `Nothing` and handle `Nothing` from intersection
Also change
org.jetbrains.kotlin.fir.types.TypeUtilsKt#hideLocalTypeIfNeeded to skip
approximating anonymous objects if there are multiple super type refs so
that resolution behaves the same (for uncompilable code).
Note that this change does not implement check for
ApproximateAnonymousReturnTypesInPrivateInlineFunctions as the check is
already turned on in 1.5 and will likely not needed when FIR becomes
stable.
Roman Golyshev