Java Code Examples for com.google.javascript.rhino.Node#isArrayLit()

@Override
public List<String> identifyTypeDeclarationCall(Node n) {
  Node callName = n.getFirstChild();
  if ("goog.addDependency".equals(callName.getQualifiedName()) &&
      n.getChildCount() >= 3) {
    Node typeArray = callName.getNext().getNext();
    if (typeArray.isArrayLit()) {
      List<String> typeNames = Lists.newArrayList();
      for (Node name = typeArray.getFirstChild(); name != null;
           name = name.getNext()) {
        if (name.isString()) {
          typeNames.add(name.getString());
        }
      }
      return typeNames;
    }
  }
  return super.identifyTypeDeclarationCall(n);
}
 

/**
 * Try to fold array-element. e.g [1, 2, 3][10];
 */
private Node tryFoldGetElem(Node n, Node left, Node right) {
  Preconditions.checkArgument(n.isGetElem());

  if (left.isObjectLit()) {
    return tryFoldObjectPropAccess(n, left, right);
  }

  if (left.isArrayLit()) {
    return tryFoldArrayAccess(n, left, right);
  }
  return n;
}
 

/**
 * Try to fold array-element. e.g [1, 2, 3][10];
 */
private Node tryFoldGetElem(Node n, Node left, Node right) {
  Preconditions.checkArgument(n.isGetElem());

  if (left.isObjectLit()) {
    return tryFoldObjectPropAccess(n, left, right);
  }

  if (left.isArrayLit()) {
    return tryFoldArrayAccess(n, left, right);
  }
  return n;
}
 

/**
 * Try to fold array-element. e.g [1, 2, 3][10];
 */
private Node tryFoldGetElem(Node n, Node left, Node right) {
  Preconditions.checkArgument(n.isGetElem());

  if (left.isObjectLit()) {
    return tryFoldObjectPropAccess(n, left, right);
  }

  if (left.isArrayLit()) {
    return tryFoldArrayAccess(n, left, right);
  }
  return n;
}
 

@Override
public void visit(NodeTraversal t, Node n, Node parent) {
  if (n.isCall() && n.getFirstChild() != null &&
      n.getFirstChild().isName() &&
      "define".equals(n.getFirstChild().getString())) {
    Scope.Var define = t.getScope().getVar(n.getFirstChild().
        getString());
    if (define != null && !define.isGlobal()) {
      // Ignore non-global define.
      return;
    }
    if (!(parent.isExprResult() && parent.getParent().isScript())) {
      t.report(n, NON_TOP_LEVEL_STATEMENT_DEFINE_ERROR);
      return;
    }
    Node script = parent.getParent();
    Node requiresNode = null;
    Node callback = null;
    int defineArity = n.getChildCount() - 1;
    if (defineArity == 0) {
      unsupportedDefineError(t, n);
      return;
    } else if (defineArity == 1) {
      callback = n.getChildAtIndex(1);
      if (callback.isObjectLit()) {
        handleDefineObjectLiteral(parent, callback, script);
        return;
      }
    } else if (defineArity == 2) {
      requiresNode = n.getChildAtIndex(1);
      callback = n.getChildAtIndex(2);
    } else if (defineArity >= 3) {
      unsupportedDefineError(t, n);
      return;
    }

    if (!callback.isFunction() ||
        (requiresNode != null && !requiresNode.isArrayLit())) {
      unsupportedDefineError(t, n);
      return;
    }

    handleRequiresAndParamList(t, n, script, requiresNode, callback);

    Node callbackBlock = callback.getChildAtIndex(2);
    NodeTraversal.traverse(compiler, callbackBlock,
        new DefineCallbackReturnCallback());

    moveCallbackContentToTopLevel(parent, script, callbackBlock);
    compiler.reportCodeChange();
  }
}
 

boolean isInterestingValue(Node n) {
  return n.isObjectLit() || n.isArrayLit();
}
 

/**
 * Expand a jQuery.expandedEach call
 *
 * Expanded jQuery.expandedEach calls will replace the GETELEM nodes of a
 * property assignment with GETPROP nodes to allow for renaming.
 */
private void maybeExpandJqueryEachCall(NodeTraversal t, Node n) {
  Node objectToLoopOver = n.getChildAtIndex(1);

  if (objectToLoopOver == null) {
    return;
  }

  Node callbackFunction = objectToLoopOver.getNext();
  if (callbackFunction == null || !callbackFunction.isFunction()) {
    return;
  }

  // Run the peephole optimizations on the first argument to handle
  // cases like ("a " + "b").split(" ")
  peepholePasses.process(null, n.getChildAtIndex(1));

  // Create a reference tree
  Node nClone = n.cloneTree();

  objectToLoopOver = nClone.getChildAtIndex(1);

  // Check to see if the first argument is something we recognize and can
  // expand.
  if (!objectToLoopOver.isObjectLit() &&
      !(objectToLoopOver.isArrayLit() &&
      isArrayLitValidForExpansion(objectToLoopOver))) {
    t.report(n, JQUERY_UNABLE_TO_EXPAND_INVALID_LIT_ERROR, (String)null);
    return;
  }

  // Find all references to the callback function arguments
  List<Node> keyNodeReferences = Lists.newArrayList();
  List<Node> valueNodeReferences = Lists.newArrayList();

  NodeTraversal.traverse(compiler,
      NodeUtil.getFunctionBody(callbackFunction),
      new FindCallbackArgumentReferences(callbackFunction,
          keyNodeReferences, valueNodeReferences,
          objectToLoopOver.isArrayLit()));

  if(keyNodeReferences.size() == 0) {
   // We didn't do anything useful ...
    t.report(n, JQUERY_USELESS_EACH_EXPANSION, (String)null);
    return;
  }

  Node fncBlock = tryExpandJqueryEachCall(t, nClone, callbackFunction,
      keyNodeReferences, valueNodeReferences);

  if (fncBlock != null && fncBlock.hasChildren()) {
      replaceOriginalJqueryEachCall(n, fncBlock);
  } else {
    // We didn't do anything useful ...
    t.report(n, JQUERY_USELESS_EACH_EXPANSION, (String)null);
  }
}