Ejemplo n.º 1
0
  @Override
  public Void visitXmlTagNode(XmlTagNode node) {
    if (isScriptNode(node)) {
      Source htmlSource = htmlElement.getSource();
      String scriptSourcePath = getScriptSourcePath(node);
      if (node.getAttributeEnd().getType() == TokenType.GT && scriptSourcePath == null) {
        EmbeddedHtmlScriptElementImpl script = new EmbeddedHtmlScriptElementImpl(node);
        String contents = node.getContent();

        // TODO (danrubel): Move scanning embedded scripts into AnalysisContextImpl
        // so that clients such as builder can scan, parse, and get errors without resolving
        AnalysisErrorListener errorListener =
            new AnalysisErrorListener() {
              @Override
              public void onError(AnalysisError error) {
                // TODO (danrubel): make errors accessible once this is moved into
                // AnalysisContextImpl
              }
            };
        StringScanner scanner = new StringScanner(null, contents, errorListener);
        com.google.dart.engine.scanner.Token firstToken = scanner.tokenize();
        int[] lineStarts = scanner.getLineStarts();

        // TODO (danrubel): Move parsing embedded scripts into AnalysisContextImpl
        // so that clients such as builder can scan, parse, and get errors without resolving
        Parser parser = new Parser(null, errorListener);
        CompilationUnit unit = parser.parseCompilationUnit(firstToken);

        try {
          CompilationUnitBuilder builder = new CompilationUnitBuilder();
          CompilationUnitElementImpl elem = builder.buildCompilationUnit(htmlSource, unit);
          LibraryElementImpl library = new LibraryElementImpl(context, null);
          library.setDefiningCompilationUnit(elem);
          script.setScriptLibrary(library);
        } catch (AnalysisException e) {
          // TODO (danrubel): Handle or forward the exception
          e.printStackTrace();
        }

        scripts.add(script);
      } else {
        ExternalHtmlScriptElementImpl script = new ExternalHtmlScriptElementImpl(node);
        if (scriptSourcePath != null) {
          script.setScriptSource(
              context.getSourceFactory().resolveUri(htmlSource, scriptSourcePath));
        }
        scripts.add(script);
      }
    } else {
      node.visitChildren(this);
    }
    return null;
  }
Ejemplo n.º 2
0
 /**
  * Determine if the specified node is a Dart script.
  *
  * @param node the node to be tested (not {@code null})
  * @return {@code true} if the node is a Dart script
  */
 private boolean isScriptNode(XmlTagNode node) {
   if (node.getTagNodes().size() != 0 || !node.getTag().getLexeme().equals(SCRIPT)) {
     return false;
   }
   for (XmlAttributeNode attribute : node.getAttributes()) {
     if (attribute.getName().getLexeme().equals(TYPE)) {
       Token valueToken = attribute.getValue();
       if (valueToken != null) {
         String value = valueToken.getLexeme();
         if (value.equals(APPLICATION_DART_IN_DOUBLE_QUOTES)
             || value.equals(APPLICATION_DART_IN_SINGLE_QUOTES)) {
           return true;
         }
       }
     }
   }
   return false;
 }
Ejemplo n.º 3
0
 /**
  * Return the value of the source attribute if it exists.
  *
  * @param node the node containing attributes
  * @return the source path or {@code null} if not defined
  */
 private String getScriptSourcePath(XmlTagNode node) {
   for (XmlAttributeNode attribute : node.getAttributes()) {
     if (attribute.getName().getLexeme().equals(SRC)) {
       String text = attribute.getText();
       return text != null && text.length() > 0 ? text : null;
     }
   }
   return null;
 }