Java 类com.intellij.psi.impl.cache.impl.id.PlatformIdTableBuilding 实例源码

@Override
public boolean acceptInput(@NotNull final VirtualFile file) {
  if (!file.isInLocalFileSystem()) {
    return false; // do not index TODOs in library sources
  }

  final FileType fileType = file.getFileType();

  if (fileType instanceof LanguageFileType) {
    final Language lang = ((LanguageFileType)fileType).getLanguage();
    final ParserDefinition parserDef = LanguageParserDefinitions.INSTANCE.forLanguage(lang);
    final TokenSet commentTokens = parserDef != null ? parserDef.getCommentTokens() : null;
    return commentTokens != null;
  }

  return PlatformIdTableBuilding.isTodoIndexerRegistered(fileType) ||
         fileType instanceof CustomSyntaxTableFileType;
}

@Nullable
public static Lexer getLexerBasedOnLexerHighlighter(CharSequence text, VirtualFile virtualFile, Project project) {
  EditorHighlighter highlighter = null;

  PsiFile psiFile = virtualFile != null ? PsiManager.getInstance(project).findFile(virtualFile) : null;
  final Document document = psiFile != null ? PsiDocumentManager.getInstance(project).getDocument(psiFile) : null;
  final EditorHighlighter cachedEditorHighlighter;
  boolean alreadyInitializedHighlighter = false;

  if (document != null &&
      (cachedEditorHighlighter = getEditorHighlighterForCachesBuilding(document)) != null &&
      PlatformIdTableBuilding.checkCanUseCachedEditorHighlighter(text, cachedEditorHighlighter)) {
    highlighter = cachedEditorHighlighter;
    alreadyInitializedHighlighter = true;
  }
  else if (virtualFile != null) {
    highlighter = EditorHighlighterFactory.getInstance().createEditorHighlighter(project, virtualFile);
  }

  if (highlighter != null) {
    return new LexerEditorHighlighterLexer(highlighter, alreadyInitializedHighlighter);
  }
  return null;
}

@Override
public boolean acceptInput(final VirtualFile file) {
  if (!(file.getFileSystem() instanceof LocalFileSystem)) {
    return false; // do not index TODOs in library sources
  }

  final FileType fileType = file.getFileType();

  if (fileType instanceof LanguageFileType) {
    final Language lang = ((LanguageFileType)fileType).getLanguage();
    final ParserDefinition parserDef = LanguageParserDefinitions.INSTANCE.forLanguage(lang);
    final TokenSet commentTokens = parserDef != null ? parserDef.getCommentTokens() : null;
    return commentTokens != null;
  }

  return PlatformIdTableBuilding.isTodoIndexerRegistered(fileType) ||
         fileType instanceof CustomSyntaxTableFileType;
}

@Nullable
public static Lexer getLexerBasedOnLexerHighlighter(CharSequence text, VirtualFile virtualFile, Project project) {
  EditorHighlighter highlighter = null;

  PsiFile psiFile = virtualFile != null ? PsiManager.getInstance(project).findFile(virtualFile) : null;
  final Document document = psiFile != null ? PsiDocumentManager.getInstance(project).getDocument(psiFile) : null;
  final EditorHighlighter cachedEditorHighlighter;
  boolean alreadyInitializedHighlighter = false;

  if (document != null &&
      (cachedEditorHighlighter = getEditorHighlighterForCachesBuilding(document)) != null &&
      PlatformIdTableBuilding.checkCanUseCachedEditorHighlighter(text, cachedEditorHighlighter)) {
    highlighter = cachedEditorHighlighter;
    alreadyInitializedHighlighter = true;
  }
  else if (virtualFile != null) {
    highlighter = EditorHighlighterFactory.getInstance().createEditorHighlighter(project, virtualFile);
  }

  if (highlighter != null) {
    return new LexerEditorHighlighterLexer(highlighter, alreadyInitializedHighlighter);
  }
  return null;
}

@Override
@NotNull
public Map<TodoIndexEntry,Integer> map(@NotNull final FileContent inputData) {
  final VirtualFile file = inputData.getFile();
  final DataIndexer<TodoIndexEntry, Integer, FileContent> indexer = PlatformIdTableBuilding
    .getTodoIndexer(inputData.getFileType(), file);
  if (indexer != null) {
    return indexer.map(inputData);
  }
  return Collections.emptyMap();
}

@Override
public Lexer getIndexingLexer(final PsiFile file) {
  if (JspPsiUtil.isInJspFile(file)) {
    EditorHighlighter highlighter = null;

    final Document document = PsiDocumentManager.getInstance(file.getProject()).getDocument(file);
    final EditorHighlighter cachedEditorHighlighter;
    boolean alreadyInitializedHighlighter = false;

    if ((cachedEditorHighlighter = EditorHighlighterCache.getEditorHighlighterForCachesBuilding(document)) != null &&
        PlatformIdTableBuilding.checkCanUseCachedEditorHighlighter(file.getText(), cachedEditorHighlighter)) {
      highlighter = cachedEditorHighlighter;
      alreadyInitializedHighlighter = true;
    }
    else {
      final VirtualFile virtualFile = file.getVirtualFile();
      if (virtualFile != null) {
        highlighter = EditorHighlighterFactory.getInstance().createEditorHighlighter(file.getProject(), virtualFile);
      }
    }

    if (highlighter != null) {
      return new LexerEditorHighlighterLexer(highlighter, alreadyInitializedHighlighter);
    }
  }

  return null;
}

@Override
@NotNull
public Map<TodoIndexEntry,Integer> map(final FileContent inputData) {
  final VirtualFile file = inputData.getFile();
  final DataIndexer<TodoIndexEntry, Integer, FileContent> indexer = PlatformIdTableBuilding
    .getTodoIndexer(inputData.getFileType(), file);
  if (indexer != null) {
    return indexer.map(inputData);
  }
  return Collections.emptyMap();
}