Examples of com.google.gwt.dev.js.rhino.Node$NumberNode

com.google.gwt.dev.js.rhino.Node
This class implements the root of the intermediate representation. @author Norris Boyd @author Mike McCabe


  private JsReturn mapReturn(Node returnNode) throws JsParserException {
    SourceInfo info = makeSourceInfo(returnNode);
    JsReturn toReturn = new JsReturn(info);
    pushSourceInfo(info);
    Node from = returnNode.getFirstChild();
    if (from != null) {
      JsExpression to = mapExpression(from);
      toReturn.setExpr(to);
    }

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    //
    JsArrayAccess lhs = mapGetElem(setElemNode);


    // Map the RHS.
    //
    Node fromRhs = setElemNode.getFirstChild().getNext().getNext();
    JsExpression toRhs = mapExpression(fromRhs);


    return new JsBinaryOperation(makeSourceInfo(setElemNode),
        JsBinaryOperator.ASG, lhs, toRhs);
  }

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    //
    JsNameRef lhs = mapGetProp(getPropNode);


    // Map the RHS.
    //
    Node fromRhs = getPropNode.getFirstChild().getNext().getNext();
    JsExpression toRhs = mapExpression(fromRhs);


    return new JsBinaryOperation(makeSourceInfo(getPropNode),
        JsBinaryOperator.ASG, lhs, toRhs);
  }

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    }
  }


  private void mapStatements(List<JsStatement> stmts, Node nodeStmts)
      throws JsParserException {
    Node curr = nodeStmts.getFirstChild();
    while (curr != null) {
      JsStatement stmt = mapStatement(curr);
      if (stmt != null) {
        stmts.add(stmt);
      } else {
        // When mapStatement() returns null, we just ignore it.
        //
      }
      curr = curr.getNext();
    }
  }

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    JsSwitch toSwitch = new JsSwitch(info);
    pushSourceInfo(info);


    // The switch expression.
    //
    Node fromSwitchExpr = switchNode.getFirstChild();
    toSwitch.setExpr(mapExpression(fromSwitchExpr));


    // The members.
    //
    Node fromMember = fromSwitchExpr.getNext();
    while (fromMember != null) {
      if (fromMember.getType() == TokenStream.CASE) {
        JsCase toCase = new JsCase(makeSourceInfo(fromMember));


        // Set the case expression. In JS, this can be any expression.
        //
        Node fromCaseExpr = fromMember.getFirstChild();
        toCase.setCaseExpr(mapExpression(fromCaseExpr));


        // Set the case statements.
        //
        Node fromCaseBlock = fromCaseExpr.getNext();
        mapStatements(toCase.getStmts(), fromCaseBlock);


        // Attach the case to the switch.
        //
        toSwitch.getCases().add(toCase);
      } else {
        // This should be the only default statement.
        // If more than one is present, we keep the last one.
        //
        assert (fromMember.getType() == TokenStream.DEFAULT);
        JsDefault toDefault = new JsDefault(makeSourceInfo(fromMember));


        // Set the default statements.
        //
        Node fromDefaultBlock = fromMember.getFirstChild();
        mapStatements(toDefault.getStmts(), fromDefaultBlock);


        // Attach the default to the switch.
        //
        toSwitch.getCases().add(toDefault);

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    SourceInfo info = makeSourceInfo(throwNode);
    pushSourceInfo(info);


    // Create, map, and attach.
    //
    Node fromExpr = throwNode.getFirstChild();
    JsThrow toThrow = new JsThrow(info, mapExpression(fromExpr));


    popSourceInfo();
    return toThrow;
  }

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  private JsTry mapTryStatement(Node tryNode) throws JsParserException {
    JsTry toTry = new JsTry(makeSourceInfo(tryNode));


    // Map the "try" body.
    //
    Node fromTryBody = tryNode.getFirstChild();
    toTry.setTryBlock(mapBlock(fromTryBody));


    // Map zero or more catch blocks.
    //
    Node fromCatchNodes = fromTryBody.getNext();
    Node fromCatchNode = fromCatchNodes.getFirstChild();
    while (fromCatchNode != null) {
      assert (fromCatchNode.getType() == TokenStream.CATCH);
      // Map the catch variable.
      //
      Node fromCatchVarName = fromCatchNode.getFirstChild();
      JsCatch catchBlock = new JsCatch(makeSourceInfo(fromCatchNode),
          getScope(), fromCatchVarName.getString());


      // Pre-advance to the next catch block, if any.
      // We do this here to decide whether or not this is the last one.
      //
      fromCatchNode = fromCatchNode.getNext();


      // Map the condition, with a little fixup based on whether or not
      // this is the last catch block.
      //
      Node fromCondition = fromCatchVarName.getNext();
      JsExpression toCondition = mapExpression(fromCondition);
      catchBlock.setCondition(toCondition);
      if (fromCatchNode == null) {
        if (toCondition instanceof JsBooleanLiteral) {
          if (((JsBooleanLiteral) toCondition).getValue()) {
            // Actually, this is an unconditional catch block.
            // Indicate that by nulling the condition.
            //
            catchBlock.setCondition(null);
          }
        }
      }


      // Map the catch body.
      //
      Node fromCatchBody = fromCondition.getNext();
      pushScope(catchBlock.getScope(), catchBlock.getSourceInfo());
      catchBlock.setBody(mapBlock(fromCatchBody));
      popScope();


      // Attach it.
      //
      toTry.getCatches().add(catchBlock);
    }


    Node fromFinallyNode = fromCatchNodes.getNext();
    if (fromFinallyNode != null) {
      toTry.setFinallyBlock(mapBlock(fromFinallyNode));
    }


    return toTry;

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  private JsVars mapVar(Node varNode) throws JsParserException {
    SourceInfo info = makeSourceInfo(varNode);
    pushSourceInfo(info);
    JsVars toVars = new JsVars(info);
    Node fromVar = varNode.getFirstChild();
    while (fromVar != null) {
      // Use a conservative name allocation strategy that allocates all names
      // from the function's scope, even the names of properties in field
      // literals.
      //
      String fromName = fromVar.getString();
      JsName toName = getScope().declareName(fromName);
      JsVars.JsVar toVar = new JsVars.JsVar(makeSourceInfo(fromVar), toName);


      Node fromInit = fromVar.getFirstChild();
      if (fromInit != null) {
        JsExpression toInit = mapExpression(fromInit);
        toVar.setInitExpr(toInit);
      }
      toVars.add(toVar);

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    try {
      // Parse using the Rhino parser.
      //
      TokenStream ts = new TokenStream(r, "", startLine);
      Parser parser = new Parser(new IRFactory(ts));
      Node topNode = (Node) parser.parse(ts);


      // Map the Rhino AST to ours.
      //
      program = scope.getProgram();
      pushScope(scope);

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    }
  }


  private JsArrayLiteral mapArrayLit(Node node) throws JsParserException {
    JsArrayLiteral toLit = new JsArrayLiteral();
    Node from = node.getFirstChild();
    while (from != null) {
      toLit.getExpressions().add(mapExpression(from));
      from = from.getNext();
    }
    return toLit;
  }

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Related Classes of com.google.gwt.dev.js.rhino.Node$NumberNode

com.google.gwt.dev.js.JsParser

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