@NotNull public static <T extends PsiJavaCodeReferenceElement> JavaResolveResult[] multiResolveImpl( @NotNull T element, boolean incompleteCode, @NotNull ResolveCache.PolyVariantContextResolver<? super T> resolver) { FileASTNode fileElement = SharedImplUtil.findFileElement(element.getNode()); if (fileElement == null) { PsiUtilCore.ensureValid(element); LOG.error("fileElement == null!"); return JavaResolveResult.EMPTY_ARRAY; } PsiFile psiFile = SharedImplUtil.getContainingFile(fileElement); PsiManager manager = psiFile == null ? null : psiFile.getManager(); if (manager == null) { PsiUtilCore.ensureValid(element); LOG.error("getManager() == null!"); return JavaResolveResult.EMPTY_ARRAY; } boolean valid = psiFile.isValid(); if (!valid) { PsiUtilCore.ensureValid(element); LOG.error("psiFile.isValid() == false!"); return JavaResolveResult.EMPTY_ARRAY; } if (element instanceof PsiMethodReferenceExpression) { // method refs: do not cache results during parent conflict resolving, acceptable checks, etc final Map<PsiElement, PsiType> map = LambdaUtil.ourFunctionTypes.get(); if (map != null && map.containsKey(element)) { return (JavaResolveResult[]) resolver.resolve(element, psiFile, incompleteCode); } } return multiResolveImpl(manager.getProject(), psiFile, element, incompleteCode, resolver); }
@Override public PsiFile getContainingFile() { PsiFile file = SharedImplUtil.getContainingFile(this); if (file == null || !file.isValid()) throw new PsiInvalidElementAccessException(this); return file; }