59 lines
2.6 KiB
JavaScript
59 lines
2.6 KiB
JavaScript
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* - Neither the name of Oracle nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// Simple demo of Nashorn Parser API
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var Parser = Java.type("jdk.nashorn.api.tree.Parser");
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var SimpleTreeVisitor = Java.type("jdk.nashorn.api.tree.SimpleTreeVisitorES5_1");
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var IdentifierTree = Java.type("jdk.nashorn.api.tree.IdentifierTree");
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var parser = Parser.create();
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var ast = parser.parse("t", "eval('hello');\n eval(2 + 3)", print);
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// locate 'eval' calls in the script
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ast.accept(visitor = new (Java.extend(SimpleTreeVisitor)) {
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lineMap: null,
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visitCompilationUnit: function(node, extra) {
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this.lineMap = node.lineMap;
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Java.super(visitor).visitCompilationUnit(node, extra);
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},
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visitFunctionCall: function(node, extra) {
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var func = node.functionSelect;
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if (func instanceof IdentifierTree && func.name == "eval") {
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var pos = node.startPosition;
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var line = this.lineMap.getLineNumber(pos);
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var column = this.lineMap.getColumnNumber(pos);
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print("eval call found @ " + line + ":" + column);
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}
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}
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}, null);
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