/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 *   - Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 *

 *   - Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 *

 *   - Neither the name of Oracle nor the names of its

 *     contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

// Simple demo of Nashorn Parser API

var Parser = Java.type("jdk.nashorn.api.tree.Parser");

var SimpleTreeVisitor = Java.type("jdk.nashorn.api.tree.SimpleTreeVisitorES5_1");

var IdentifierTree = Java.type("jdk.nashorn.api.tree.IdentifierTree");

var parser = Parser.create();

var ast = parser.parse("t", "eval('hello');\n  eval(2 + 3)", print);

// locate 'eval' calls in the script

ast.accept(visitor = new (Java.extend(SimpleTreeVisitor)) {

    lineMap: null,

    visitCompilationUnit: function(node, extra) {

        this.lineMap = node.lineMap;

        Java.super(visitor).visitCompilationUnit(node, extra);

    },

    visitFunctionCall: function(node, extra) {

       var func = node.functionSelect;

       if (func instanceof IdentifierTree && func.name == "eval") {

           var pos = node.startPosition;

           var line = this.lineMap.getLineNumber(pos);

           var column = this.lineMap.getColumnNumber(pos);

           print("eval call found @ " + line + ":" + column);

       } 

    } 

}, null);