Example #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;
  }
Example #2
0
 @NotNull
 private static Import importToImport(@NotNull PsiImportStatementBase i) {
   PsiJavaCodeReferenceElement reference = i.getImportReference();
   if (reference != null) {
     return new Import(quoteKeywords(reference.getQualifiedName()) + (i.isOnDemand() ? ".*" : ""));
   }
   return new Import("");
 }
Example #3
0
  public ASTNode getDefaultAnchor(
      @NotNull PsiImportList list, @NotNull PsiImportStatementBase statement) {
    PsiJavaCodeReferenceElement ref = statement.getImportReference();
    if (ref == null) return null;

    int entryIndex = findEntryIndex(statement);
    PsiImportStatementBase[] allStatements = list.getAllImportStatements();
    int[] entries = ArrayUtil.newIntArray(allStatements.length);
    List<PsiImportStatementBase> statements = new ArrayList<PsiImportStatementBase>();
    for (int i = 0; i < allStatements.length; i++) {
      PsiImportStatementBase statement1 = allStatements[i];
      int entryIndex1 = findEntryIndex(statement1);
      entries[i] = entryIndex1;
      if (entryIndex1 == entryIndex) {
        statements.add(statement1);
      }
    }

    if (statements.isEmpty()) {
      int index;
      for (index = entries.length - 1; index >= 0; index--) {
        if (entries[index] < entryIndex) break;
      }
      index++;
      return index < entries.length
          ? SourceTreeToPsiMap.psiElementToTree(allStatements[index])
          : null;
    } else {
      String refText = ref.getCanonicalText();
      if (statement.isOnDemand()) {
        refText += ".";
      }

      PsiImportStatementBase insertBefore = null;
      PsiImportStatementBase insertAfter = null;
      for (PsiImportStatementBase statement1 : statements) {
        PsiJavaCodeReferenceElement ref1 = statement1.getImportReference();
        if (ref1 == null) {
          continue;
        }
        String refTextThis = ref1.getCanonicalText();
        if (statement1.isOnDemand()) {
          refTextThis += ".";
        }

        int comp = Comparing.compare(refText, refTextThis);
        if (comp < 0 && insertBefore == null) {
          insertBefore = statement1;
        }
        if (comp > 0) {
          insertAfter = statement1;
        }
      }

      if (insertBefore != null) return insertBefore.getNode();
      if (insertAfter != null) return insertAfter.getNode().getTreeNext();
      return null;
    }
  }
Example #4
0
 public int findEntryIndex(@NotNull PsiImportStatementBase statement) {
   PsiJavaCodeReferenceElement ref = statement.getImportReference();
   if (ref == null) return -1;
   String packageName;
   if (statement.isOnDemand()) {
     packageName = ref.getCanonicalText();
   } else {
     String className = ref.getCanonicalText();
     packageName = getPackageOrClassName(className);
   }
   return findEntryIndex(packageName);
 }
Example #5
0
  @Override
  public void removeRedundantImports(@NotNull final PsiJavaFile file)
      throws IncorrectOperationException {
    final Collection<PsiImportStatementBase> redundant = findRedundantImports(file);
    if (redundant == null) return;

    for (final PsiImportStatementBase importStatement : redundant) {
      final PsiJavaCodeReferenceElement ref = importStatement.getImportReference();
      // Do not remove non-resolving refs
      if (ref == null || ref.resolve() == null) {
        continue;
      }

      importStatement.delete();
    }
  }
Example #6
0
 private static void addUnresolvedImportNames(
     @NotNull Set<String> set,
     @NotNull PsiJavaFile file,
     @NotNull Set<String> namesToImportStaticly) {
   PsiImportStatementBase[] imports = file.getImportList().getAllImportStatements();
   for (PsiImportStatementBase anImport : imports) {
     PsiJavaCodeReferenceElement ref = anImport.getImportReference();
     if (ref == null) continue;
     JavaResolveResult[] results = ref.multiResolve(false);
     if (results.length == 0) {
       String text = ref.getCanonicalText();
       if (anImport.isOnDemand()) {
         text += ".*";
       }
       if (anImport instanceof PsiImportStaticStatement) {
         namesToImportStaticly.add(text);
       }
       set.add(text);
     }
   }
 }