com.intellij.lang.Language Java Examples

public RefManagerImpl(@Nonnull Project project, @Nullable AnalysisScope scope, @Nonnull GlobalInspectionContext context) {
  myProject = project;
  myScope = scope;
  myContext = context;
  myPsiManager = PsiManager.getInstance(project);
  myRefProject = new RefProjectImpl(this);
  for (InspectionExtensionsFactory factory : InspectionExtensionsFactory.EP_NAME.getExtensionList()) {
    final RefManagerExtension<?> extension = factory.createRefManagerExtension(this);
    if (extension != null) {
      myExtensions.put(extension.getID(), extension);
      for (Language language : extension.getLanguages()) {
        myLanguageExtensions.put(language, extension);
      }
    }
  }
  if (scope != null) {
    for (Module module : ModuleManager.getInstance(getProject()).getModules()) {
      getRefModule(module);
    }
  }
}
 

@Nonnull
@Override
public PsiPackage createPackage(@Nonnull PsiManager psiManager,
                                @Nonnull PsiPackageManager packageManager,
                                @Nonnull Class<? extends ModuleExtension> extensionClass,
                                @Nonnull String packageName) {
  return new PsiPackageBase(psiManager, packageManager, extensionClass, packageName) {
    @Override
    protected ArrayFactory<? extends PsiPackage> getPackageArrayFactory() {
      return PsiPackage.ARRAY_FACTORY;
    }

    @RequiredReadAction
    @Nonnull
    @Override
    public Language getLanguage() {
      return SandLanguage.INSTANCE;
    }
  };
}
 

@Nullable
protected static ASTNode tryReparseNode(@Nonnull IReparseableElementTypeBase reparseable, @Nonnull ASTNode node, @Nonnull CharSequence newTextStr,
                                        @Nonnull PsiManager manager, @Nonnull Language baseLanguage, @Nonnull CharTable charTable) {
  if (!reparseable.isParsable(node.getTreeParent(), newTextStr, baseLanguage, manager.getProject())) {
    return null;
  }
  ASTNode chameleon;
  if (reparseable instanceof ICustomParsingType) {
    chameleon = ((ICustomParsingType)reparseable).parse(newTextStr, SharedImplUtil.findCharTableByTree(node));
  }
  else if (reparseable instanceof ILazyParseableElementType) {
    chameleon = ((ILazyParseableElementType)reparseable).createNode(newTextStr);
  }
  else {
    throw new AssertionError(reparseable.getClass() + " must either implement ICustomParsingType or extend ILazyParseableElementType");
  }
  if (chameleon == null) {
    return null;
  }
  DummyHolder holder = DummyHolderFactory.createHolder(manager, null, node.getPsi(), charTable);
  holder.getTreeElement().rawAddChildren((TreeElement)chameleon);
  if (!reparseable.isValidReparse(node, chameleon)) {
    return null;
  }
  return chameleon;
}
 

protected TemplateLanguageErrorFilter(
  final @Nonnull TokenSet templateExpressionStartTokens,
  final @Nonnull Class templateFileViewProviderClass,
  final @Nonnull String... knownSubLanguageNames)
{
  myTemplateExpressionStartTokens = TokenSet.create(templateExpressionStartTokens.getTypes());
  myTemplateFileViewProviderClass = templateFileViewProviderClass;

  List<String> knownSubLanguageList = new ArrayList<String>(Arrays.asList(knownSubLanguageNames));
  knownSubLanguageList.add("JavaScript");
  knownSubLanguageList.add("CSS");
  knownLanguageSet = new HashSet<Language>();
  for (String name : knownSubLanguageList) {
    final Language language = Language.findLanguageByID(name);
    if (language != null) {
      knownLanguageSet.add(language);
    }
  }
}
 

public SoyLayeredHighlighter(
    @Nullable Project project,
    @Nullable VirtualFile virtualFile,
    @NotNull EditorColorsScheme colors) {
  // Creating main highlighter.
  super(new SoySyntaxHighlighter(), colors);

  // Highlighter for the outer language.
  FileType type = null;
  if (project == null || virtualFile == null) {
    type = StdFileTypes.PLAIN_TEXT;
  } else {
    Language language = TemplateDataLanguageMappings.getInstance(project).getMapping(virtualFile);
    if (language != null) type = language.getAssociatedFileType();
    if (type == null) type = SoyLanguage.getDefaultTemplateLang();
  }

  SyntaxHighlighter outerHighlighter =
      SyntaxHighlighterFactory.getSyntaxHighlighter(type, project, virtualFile);

  registerLayer(OTHER, new LayerDescriptor(outerHighlighter, ""));
}
 

public static boolean canHaveStub(@Nonnull ProjectLocator projectLocator, @Nullable Project project, @Nonnull VirtualFile file) {
  FileType fileType = SubstitutedFileType.substituteFileType(file, file.getFileType(), project == null ? projectLocator.guessProjectForFile(file) : project);
  if (fileType instanceof LanguageFileType) {
    final Language l = ((LanguageFileType)fileType).getLanguage();
    final ParserDefinition parserDefinition = LanguageParserDefinitions.INSTANCE.forLanguage(l);
    if (parserDefinition == null) {
      return false;
    }

    final IFileElementType elementType = parserDefinition.getFileNodeType();
    if (elementType instanceof IStubFileElementType) {
      if (((IStubFileElementType)elementType).shouldBuildStubFor(file)) {
        return true;
      }
      FileBasedIndex fileBasedIndex = FileBasedIndex.getInstance();
      if (file instanceof NewVirtualFile &&
          fileBasedIndex instanceof FileBasedIndexImpl &&
          ((FileBasedIndexImpl)fileBasedIndex).getIndex(INDEX_ID).isIndexedStateForFile(((NewVirtualFile)file).getId(), file)) {
        return true;
      }
    }
  }
  final BinaryFileStubBuilder builder = BinaryFileStubBuilders.INSTANCE.forFileType(fileType);
  return builder != null && builder.acceptsFile(file);
}
 

@Nullable
@Override
protected PsiFile createFile(@NotNull Language lang) {
    if (lang == myTemplateDataLanguage) {
        PsiFileImpl file = (PsiFileImpl) LanguageParserDefinitions.INSTANCE.forLanguage(lang).createFile(this);
        file.setContentElementType(TEMPLATE_DATA);

        return file;
    } else if (lang == FluidLanguage.INSTANCE) {

        return LanguageParserDefinitions.INSTANCE.forLanguage(lang).createFile(this);
    } else {

        return null;
    }
}
 

public static boolean hasConflicts(String start, String end, PsiElement element) {
    final Language elementLanguage = element.getLanguage();
    // JSP contains two roots that contain XmlText, don't inject anything in JSP root to prevent double injections
    if ("JSP".equals(elementLanguage.getDisplayName())) {
        return true;
    }

    PsiFile file = element.getContainingFile();
    if (DEFAULT_START.equals(start) || DEFAULT_END.equals(end)) {
        // JSX attributes don't contain AngularJS injections, {{}} is JSX injection with object inside
        if (elementLanguage.isKindOf(JavascriptLanguage.INSTANCE)) return true;

        for (Language language : file.getViewProvider().getLanguages()) {
            if (DEFAULT_CONFLICTS.contains(language.getDisplayName())) {
                return true;
            }
        }
    }
    return false;
}
 

@Override
public boolean containsWhiteSpaceSymbolsOnly(int startOffset, int endOffset) {
  WhiteSpaceFormattingStrategy strategy = myWhiteSpaceStrategy;
  if (strategy.check(myDocument.getCharsSequence(), startOffset, endOffset) >= endOffset) {
    return true;
  }
  PsiElement injectedElement = myFile != null ? InjectedLanguageUtil.findElementAtNoCommit(myFile, startOffset) : null;
  if (injectedElement != null) {
    Language injectedLanguage = injectedElement.getLanguage();
    if (!injectedLanguage.equals(myFile.getLanguage())) {
      WhiteSpaceFormattingStrategy localStrategy = WhiteSpaceFormattingStrategyFactory.getStrategy(injectedLanguage);
      if (localStrategy != null) {
        return localStrategy.check(myDocument.getCharsSequence(), startOffset, endOffset) >= endOffset;
      }
    }
  }
  return false;
}
 

@Override
public void actionPerformed(@NotNull AnActionEvent e) {
    Optional<PsiFile> psiFile = Optional.ofNullable(e.getData(LangDataKeys.PSI_FILE));
    String languageTag = psiFile
            .map(PsiFile::getLanguage)
            .map(Language::getDisplayName)
            .map(String::toLowerCase)
            .map(lang -> "[" + lang + "]")
            .orElse("");

    Editor editor = e.getRequiredData(CommonDataKeys.EDITOR);
    CaretModel caretModel = editor.getCaretModel();
    String selectedText = caretModel.getCurrentCaret().getSelectedText();

    BrowserUtil.browse("https://stackoverflow.com/search?q=" + languageTag + selectedText);
}
 

@Nonnull
public LanguageConsoleView build(@Nonnull Project project, @Nonnull Language language) {
  final MyHelper helper = new MyHelper(project, language.getDisplayName() + " Console", language, psiFileFactory);
  GutteredLanguageConsole consoleView = new GutteredLanguageConsole(helper, gutterContentProvider);
  if (oneLineInput) {
    consoleView.getConsoleEditor().setOneLineMode(true);
  }
  if (executeActionHandler != null) {
    assert historyType != null;
    doInitAction(consoleView, executeActionHandler, historyType);
  }

  if (processInputStateKey != null) {
    assert executeActionHandler != null;
    if (PropertiesComponent.getInstance().getBoolean(processInputStateKey)) {
      executeActionHandler.myUseProcessStdIn = true;
      DaemonCodeAnalyzer daemonCodeAnalyzer = DaemonCodeAnalyzer.getInstance(consoleView.getProject());
      daemonCodeAnalyzer.setHighlightingEnabled(consoleView.getFile(), false);
    }
    consoleView.addCustomConsoleAction(new UseConsoleInputAction(processInputStateKey));
  }
  return consoleView;
}
 

@Nullable
private static EditorHighlighter createEditorHighlighter(@Nullable Project project, @Nonnull DocumentContent content) {
  FileType type = content.getContentType();
  VirtualFile file = content.getHighlightFile();
  Language language = content.getUserData(DiffUserDataKeys.LANGUAGE);

  EditorHighlighterFactory highlighterFactory = EditorHighlighterFactory.getInstance();
  if (language != null) {
    SyntaxHighlighter syntaxHighlighter = SyntaxHighlighterFactory.getSyntaxHighlighter(language, project, file);
    return highlighterFactory.createEditorHighlighter(syntaxHighlighter, EditorColorsManager.getInstance().getGlobalScheme());
  }
  if (file != null) {
    if ((type == null || type == PlainTextFileType.INSTANCE) || file.getFileType() == type || file instanceof LightVirtualFile) {
      return highlighterFactory.createEditorHighlighter(project, file);
    }
  }
  if (type != null) {
    return highlighterFactory.createEditorHighlighter(project, type);
  }
  return null;
}
 

public DummyHolder(@Nonnull PsiManager manager, @Nullable TreeElement contentElement, @Nullable PsiElement context, @Nullable CharTable table, @Nullable Boolean validity, Language language) {
  super(TokenType.DUMMY_HOLDER, TokenType.DUMMY_HOLDER, new DummyHolderViewProvider(manager));
  myLanguage = language;
  ((DummyHolderViewProvider)getViewProvider()).setDummyHolder(this);
  myContext = context;
  myTable = table != null ? table : IdentityCharTable.INSTANCE;
  if (contentElement instanceof FileElement) {
    ((FileElement)contentElement).setPsi(this);
    ((FileElement)contentElement).setCharTable(myTable);
    setTreeElementPointer((FileElement)contentElement);
  }
  else if (contentElement != null) {
    getTreeElement().rawAddChildren(contentElement);
    clearCaches();
  }
  myExplicitlyValid = validity;
}
 

private boolean isComment(int offset) {
  final HighlighterIterator it = myEditor.getHighlighter().createIterator(offset);
  IElementType tokenType = it.getTokenType();
  Language language = tokenType.getLanguage();
  TokenSet comments = myComments.get(language);
  if (comments == null) {
    ParserDefinition definition = LanguageParserDefinitions.INSTANCE.forLanguage(language);
    if (definition != null) {
      comments = definition.getCommentTokens();
    }
    if (comments == null) {
      return false;
    }
    else {
      myComments.put(language, comments);
    }
  }
  return comments.contains(tokenType);
}
 

public void addInjectedLanguageBlockWrapper(final List<Block> result, final ASTNode injectedNode,
                                            final Indent indent, int offset, @Nullable TextRange range) {

  //
  // Do not create a block for an empty range
  //
  if (range != null) {
    if (range.getLength() == 0) return;
    if(StringUtil.isEmptyOrSpaces(range.substring(injectedNode.getText()))) {
      return;
    }
  }
  
  final PsiElement childPsi = injectedNode.getPsi();
  final Language childLanguage = childPsi.getLanguage();
  final FormattingModelBuilder builder = LanguageFormatting.INSTANCE.forContext(childLanguage, childPsi);
  LOG.assertTrue(builder != null);
  final FormattingModel childModel = builder.createModel(childPsi, getSettings());
  Block original = childModel.getRootBlock();

  if ((original.isLeaf() && injectedNode.getText().trim().length() > 0) || original.getSubBlocks().size() != 0) {
    result.add(createInjectedBlock(injectedNode, original, indent, offset, range, childLanguage));
  }
}
 

@Nonnull
public static ListPopup forFileLanguages(@Nonnull Project project, @Nonnull String title, @Nullable Language selection, @Nonnull Consumer<? super Language> onChosen) {
  return languagePopupBuilder(project, title).
          forValues(LanguageUtil.getFileLanguages()).
          withSelection(selection).
          onChosen(onChosen).
          buildPopup();
}
 

private static Language getLanguageAtCurrentPositionInEditor(Caret caret, final PsiFile psiFile) {
  int caretOffset = caret.getOffset();
  int mostProbablyCorrectLanguageOffset = caretOffset == caret.getSelectionStart() ||
                                          caretOffset == caret.getSelectionEnd()
                                          ? caret.getSelectionStart()
                                          : caretOffset;
  if (caret.hasSelection()) {
    return getLanguageAtOffset(psiFile, mostProbablyCorrectLanguageOffset, caret.getSelectionEnd());
  }

  return PsiUtilCore.getLanguageAtOffset(psiFile, mostProbablyCorrectLanguageOffset);
}
 

private static PsiFile extractLanguagePsiForElement(@NotNull Language language, @NotNull PsiElement psiElement) {
    FileViewProvider viewProvider = psiElement.getContainingFile().getViewProvider();

    int textOffset = psiElement.getTextOffset();
    PsiFile psi = viewProvider.getPsi(language);
    PsiElement elementAt = psi.findElementAt(textOffset);
    if (elementAt == null) {
        return null;
    }

    return psi;
}
 

private void initNonReadSettings() {
  final LanguageCodeStyleSettingsProvider[] providers = Extensions.getExtensions(LanguageCodeStyleSettingsProvider.EP_NAME);
  for (final LanguageCodeStyleSettingsProvider provider : providers) {
    Language target = provider.getLanguage();
    if (!myCommonSettingsMap.containsKey(target)) {
      CommonCodeStyleSettings initialSettings = safelyGetDefaults(provider);
      if (initialSettings != null) {
        init(initialSettings, target);
      }
    }
  }
}
 

public Block createInjectedBlock(ASTNode node,
                                 Block originalBlock,
                                 Indent indent,
                                 int offset,
                                 TextRange range,
                                 @Nullable Language language)
{
  return new InjectedLanguageBlockWrapper(originalBlock, offset, range, indent, language);
}
 

@Nonnull
public static String reformat(@Nonnull Project project, @Nonnull Language language, @Nonnull String text) {
  return WriteCommandAction.runWriteCommandAction(project, (Computable<String>)() -> {
    PsiFile psi = parseHeader(project, language, text);
    if (psi != null) CodeStyleManager.getInstance(project).reformat(psi);
    return psi == null ? text : psi.getText();
  });
}
 

private static boolean distinctTokens(@Nullable IElementType token1, @Nullable IElementType token2) {
  if (token1 == token2) return false;
  if (token1 == null || token2 == null) return true;
  if (StringEscapesTokenTypes.STRING_LITERAL_ESCAPES.contains(token1) || StringEscapesTokenTypes.STRING_LITERAL_ESCAPES.contains(token2)) return false;
  if (token1 != TokenType.WHITE_SPACE && token2 != TokenType.WHITE_SPACE && !token1.getLanguage().is(token2.getLanguage())) return true;
  Language language = token1.getLanguage();
  if (language == Language.ANY) language = token2.getLanguage();
  BidiRegionsSeparator separator = LanguageBidiRegionsSeparator.INSTANCE.forLanguage(language);
  return separator.createBorderBetweenTokens(token1, token2);
}
 

/**
 * Convert selected text to a URL friendly string.
 * @param e
 */
@Override
public void actionPerformed(AnActionEvent e)
{
   final Editor editor = e.getRequiredData(CommonDataKeys.EDITOR);
   CaretModel caretModel = editor.getCaretModel();

   // For searches from the editor, we should also get file type information
   // to help add scope to the search using the Stack overflow search syntax.
   //
   // https://stackoverflow.com/help/searching

   String languageTag = "";
   PsiFile file = e.getData(CommonDataKeys.PSI_FILE);
   if(file != null)
   {
      Language lang = e.getData(CommonDataKeys.PSI_FILE).getLanguage();
      languageTag = "+[" + lang.getDisplayName().toLowerCase() + "]";
   }

   // The update method below is only called periodically so need
   // to be careful to check for selected text
   if(caretModel.getCurrentCaret().hasSelection())
   {
      String query = caretModel.getCurrentCaret().getSelectedText().replace(' ', '+') + languageTag;
      BrowserUtil.browse("https://stackoverflow.com/search?q=" + query);
   }
}
 

private static void processLanguageSubstitution(@Nonnull final VirtualFile file,
                                                @Nonnull Language originalLang,
                                                @Nonnull final Language substitutedLang) {
  if (file instanceof VirtualFileWindow) {
    // Injected files are created with substituted language, no need to reparse:
    //   com.intellij.psi.impl.source.tree.injected.MultiHostRegistrarImpl#doneInjecting
    return;
  }
  Language prevSubstitutedLang = SUBSTITUTED_LANG_KEY.get(file);
  final Language prevLang = ObjectUtil.notNull(prevSubstitutedLang, originalLang);
  if (!prevLang.is(substitutedLang)) {
    if (file.replace(SUBSTITUTED_LANG_KEY, prevSubstitutedLang, substitutedLang)) {
      if (prevSubstitutedLang == null) {
        return; // no need to reparse for the first language substitution
      }
      if (ApplicationManager.getApplication().isUnitTestMode()) {
        return;
      }
      file.putUserData(REPARSING_SCHEDULED, true);
      ApplicationManager.getApplication().invokeLater(new Runnable() {
        @Override
        public void run() {
          if (file.replace(REPARSING_SCHEDULED, true, null)) {
            LOG.info("Reparsing " + file.getPath() + " because of language substitution " +
                     prevLang.getID() + "->" + substitutedLang.getID());
            FileContentUtilCore.reparseFiles(file);
          }
        }
      }, ModalityState.defaultModalityState());
    }
  }
}
 

@Nullable
public static PsiElement[] getGotoDeclarationTargets(@Nullable PsiElement psiElement, int i, @Nullable Editor editor)
{
    if(psiElement == null || !psiElement.getLanguage().equals(Language.findLanguageByID("JavaScript")))
    {
        return new PsiElement[0];
    }

    DojoSettings settings = ServiceManager.getService(psiElement.getProject(), DojoSettings.class);
    if(!settings.isNeedsMoreDojoEnabled())
    {
        return new PsiElement[0];
    }

    PsiFile templateFile = new TemplatedWidgetUtil(psiElement.getContainingFile()).findTemplatePath();

    if(templateFile == null)
    {
        return new PsiElement[0];
    }

    PsiElement attachPoint = TemplatedWidgetUtil.getAttachPointElementInHtmlFile(psiElement, templateFile);
    if(attachPoint == null)
    {
        return new PsiElement[0];
    }

    return new PsiElement[] { attachPoint };
}
 

public static void addCompletionChar(InsertionContext context, LookupElement item) {
  if (!context.getOffsetMap().containsOffset(InsertionContext.TAIL_OFFSET)) {
    String message = "tailOffset<0 after inserting " + item + " of " + item.getClass();
    if (context instanceof WatchingInsertionContext) {
      message += "; invalidated at: " + ((WatchingInsertionContext)context).invalidateTrace + "\n--------";
    }
    LOG.info(message);
  }
  else if (!CompletionAssertions.isEditorValid(context.getEditor())) {
    LOG.info("Injected editor invalidated " + context.getEditor());
  }
  else {
    context.getEditor().getCaretModel().moveToOffset(context.getTailOffset());
  }
  if (context.getCompletionChar() == Lookup.COMPLETE_STATEMENT_SELECT_CHAR) {
    Language language = PsiUtilBase.getLanguageInEditor(context.getEditor(), context.getFile().getProject());
    if (language != null) {
      for (SmartEnterProcessor processor : SmartEnterProcessors.INSTANCE.allForLanguage(language)) {
        if (processor.processAfterCompletion(context.getEditor(), context.getFile())) break;
      }
    }
  }
  else {
    DataContext dataContext = DataManager.getInstance().getDataContext(context.getEditor().getContentComponent());
    EditorActionManager.getInstance().getTypedAction().getHandler().execute(context.getEditor(), context.getCompletionChar(), dataContext);
  }
}
 

private PullUpHelper<MemberInfo> getProcessor(Language language) {
  PullUpHelper<MemberInfo> helper = myProcessors.get(language);
  if (helper == null) {
    //helper = PullUpHelper.INSTANCE.forLanguage(language).createPullUpHelper(this);
    helper = new HaxePullUpHelper(this);
    myProcessors.put(language, helper);
  }
  return helper;
}
 

@Nonnull
private static SmartPointerElementInfo createElementInfo(@Nonnull PsiFile containingFile, @Nonnull ProperTextRange range, boolean forInjected) {
  Project project = containingFile.getProject();
  if (containingFile.getViewProvider() instanceof FreeThreadedFileViewProvider) {
    PsiLanguageInjectionHost host = InjectedLanguageManager.getInstance(project).getInjectionHost(containingFile);
    if (host != null) {
      SmartPsiElementPointer<PsiLanguageInjectionHost> hostPointer = SmartPointerManager.getInstance(project).createSmartPsiElementPointer(host);
      return new InjectedSelfElementInfo(project, containingFile, range, containingFile, hostPointer);
    }
  }
  if (!forInjected && range.equals(containingFile.getTextRange())) return new FileElementInfo(containingFile);
  return new SelfElementInfo(range, Identikit.fromTypes(PsiElement.class, null, Language.ANY), containingFile, forInjected);
}
 

private static boolean hasAnyDocAwareCommenters() {
  final Collection<Language> languages = Language.getRegisteredLanguages();
  for (Language language : languages) {
    final Commenter commenter = LanguageCommenters.INSTANCE.forLanguage(language);
    if (commenter instanceof CodeDocumentationAwareCommenter) {
      final CodeDocumentationAwareCommenter docCommenter = (CodeDocumentationAwareCommenter)commenter;
      if (docCommenter.getDocumentationCommentLinePrefix() != null) {
        return true;
      }
    }
  }
  return false;
}
 

private static boolean spacesOnly(@Nullable TreeElement node) {
  if (node == null) return false;

  if (isWhitespaceOrEmpty(node)) return true;
  PsiElement psi = node.getPsi();
  if (psi == null) {
    return false;
  }
  Language language = psi.getLanguage();
  return WhiteSpaceFormattingStrategyFactory.getStrategy(language).containsWhitespacesOnly(node);
}