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- #!/usr/bin/env node
- /*
- Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
- Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>
- 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.
- 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 <COPYRIGHT HOLDER> 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.
- */
- /*jslint sloppy:true node:true rhino:true */
- var fs, esprima, fname, content, options, syntax;
- if (typeof require === 'function') {
- fs = require('fs');
- esprima = require('esprima');
- } else if (typeof load === 'function') {
- try {
- load('esprima.js');
- } catch (e) {
- load('../esprima.js');
- }
- }
- // Shims to Node.js objects when running under Rhino.
- if (typeof console === 'undefined' && typeof process === 'undefined') {
- console = { log: print };
- fs = { readFileSync: readFile };
- process = { argv: arguments, exit: quit };
- process.argv.unshift('esparse.js');
- process.argv.unshift('rhino');
- }
- function showUsage() {
- console.log('Usage:');
- console.log(' esparse [options] file.js');
- console.log();
- console.log('Available options:');
- console.log();
- console.log(' --comment Gather all line and block comments in an array');
- console.log(' --loc Include line-column location info for each syntax node');
- console.log(' --range Include index-based range for each syntax node');
- console.log(' --raw Display the raw value of literals');
- console.log(' --tokens List all tokens in an array');
- console.log(' --tolerant Tolerate errors on a best-effort basis (experimental)');
- console.log(' -v, --version Shows program version');
- console.log();
- process.exit(1);
- }
- if (process.argv.length <= 2) {
- showUsage();
- }
- options = {};
- process.argv.splice(2).forEach(function (entry) {
- if (entry === '-h' || entry === '--help') {
- showUsage();
- } else if (entry === '-v' || entry === '--version') {
- console.log('ECMAScript Parser (using Esprima version', esprima.version, ')');
- console.log();
- process.exit(0);
- } else if (entry === '--comment') {
- options.comment = true;
- } else if (entry === '--loc') {
- options.loc = true;
- } else if (entry === '--range') {
- options.range = true;
- } else if (entry === '--raw') {
- options.raw = true;
- } else if (entry === '--tokens') {
- options.tokens = true;
- } else if (entry === '--tolerant') {
- options.tolerant = true;
- } else if (entry.slice(0, 2) === '--') {
- console.log('Error: unknown option ' + entry + '.');
- process.exit(1);
- } else if (typeof fname === 'string') {
- console.log('Error: more than one input file.');
- process.exit(1);
- } else {
- fname = entry;
- }
- });
- if (typeof fname !== 'string') {
- console.log('Error: no input file.');
- process.exit(1);
- }
- try {
- content = fs.readFileSync(fname, 'utf-8');
- syntax = esprima.parse(content, options);
- console.log(JSON.stringify(syntax, null, 4));
- } catch (e) {
- console.log('Error: ' + e.message);
- process.exit(1);
- }
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