Exemple #1
0
  @Override
  @Nullable
  public Collection<PsiImportStatementBase> findRedundantImports(final PsiJavaFile file) {
    final PsiImportList importList = file.getImportList();
    if (importList == null) return null;
    final PsiImportStatementBase[] imports = importList.getAllImportStatements();
    if (imports.length == 0) return null;

    Set<PsiImportStatementBase> allImports =
        new THashSet<PsiImportStatementBase>(Arrays.asList(imports));
    final Collection<PsiImportStatementBase> redundant;
    if (FileTypeUtils.isInServerPageFile(file)) {
      // remove only duplicate imports
      redundant = ContainerUtil.newIdentityTroveSet();
      ContainerUtil.addAll(redundant, imports);
      redundant.removeAll(allImports);
      for (PsiImportStatementBase importStatement : imports) {
        if (importStatement instanceof JspxImportStatement
            && importStatement.isForeignFileImport()) {
          redundant.remove(importStatement);
        }
      }
    } else {
      redundant = allImports;
      final List<PsiFile> roots = file.getViewProvider().getAllFiles();
      for (PsiElement root : roots) {
        root.accept(
            new JavaRecursiveElementWalkingVisitor() {
              @Override
              public void visitReferenceElement(PsiJavaCodeReferenceElement reference) {
                if (!reference.isQualified()) {
                  final JavaResolveResult resolveResult = reference.advancedResolve(false);
                  if (!inTheSamePackage(file, resolveResult.getElement())) {
                    final PsiElement resolveScope = resolveResult.getCurrentFileResolveScope();
                    if (resolveScope instanceof PsiImportStatementBase) {
                      final PsiImportStatementBase importStatementBase =
                          (PsiImportStatementBase) resolveScope;
                      redundant.remove(importStatementBase);
                    }
                  }
                }
                super.visitReferenceElement(reference);
              }

              private boolean inTheSamePackage(PsiJavaFile file, PsiElement element) {
                if (element instanceof PsiClass
                    && ((PsiClass) element).getContainingClass() == null) {
                  final PsiFile containingFile = element.getContainingFile();
                  if (containingFile instanceof PsiJavaFile) {
                    return Comparing.strEqual(
                        file.getPackageName(), ((PsiJavaFile) containingFile).getPackageName());
                  }
                }
                return false;
              }
            });
      }
    }
    return redundant;
  }
Exemple #2
0
  private static void sortVariableNameSuggestions(
      String[] names,
      final VariableKind variableKind,
      @Nullable final String propertyName,
      @Nullable final PsiType type) {
    if (names.length <= 1) {
      return;
    }

    if (LOG.isDebugEnabled()) {
      LOG.debug("sorting names:" + variableKind);
      if (propertyName != null) {
        LOG.debug("propertyName:" + propertyName);
      }
      if (type != null) {
        LOG.debug("type:" + type);
      }
      for (String name : names) {
        int count =
            JavaStatisticsManager.getVariableNameUseCount(name, variableKind, propertyName, type);
        LOG.debug(name + " : " + count);
      }
    }

    Comparator<String> comparator =
        new Comparator<String>() {
          @Override
          public int compare(String s1, String s2) {
            int count1 =
                JavaStatisticsManager.getVariableNameUseCount(s1, variableKind, propertyName, type);
            int count2 =
                JavaStatisticsManager.getVariableNameUseCount(s2, variableKind, propertyName, type);
            return count2 - count1;
          }
        };
    Arrays.sort(names, comparator);
  }