You can not select more than 25 topics
			Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
		
		
		
		
		
			
		
			
				
					
					
						
							140 lines
						
					
					
						
							4.8 KiB
						
					
					
				
			
		
		
	
	
							140 lines
						
					
					
						
							4.8 KiB
						
					
					
				| #!/usr/bin/env node
 | |
| /*
 | |
|   Copyright JS Foundation and other contributors, https://js.foundation/
 | |
| 
 | |
|   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, forceFile, content, options, syntax;
 | |
| 
 | |
| if (typeof require === 'function') {
 | |
|     fs = require('fs');
 | |
|     try {
 | |
|         esprima = require('esprima');
 | |
|     } catch (e) {
 | |
|         esprima = require('../');
 | |
|     }
 | |
| } 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);
 | |
| }
 | |
| 
 | |
| options = {};
 | |
| 
 | |
| process.argv.splice(2).forEach(function (entry) {
 | |
| 
 | |
|     if (forceFile || entry === '-' || entry.slice(0, 1) !== '-') {
 | |
|         if (typeof fname === 'string') {
 | |
|             console.log('Error: more than one input file.');
 | |
|             process.exit(1);
 | |
|         } else {
 | |
|             fname = entry;
 | |
|         }
 | |
|     } else 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 === '--') {
 | |
|         forceFile = true;
 | |
|     } else {
 | |
|         console.log('Error: unknown option ' + entry + '.');
 | |
|         process.exit(1);
 | |
|     }
 | |
| });
 | |
| 
 | |
| // Special handling for regular expression literal since we need to
 | |
| // convert it to a string literal, otherwise it will be decoded
 | |
| // as object "{}" and the regular expression would be lost.
 | |
| function adjustRegexLiteral(key, value) {
 | |
|     if (key === 'value' && value instanceof RegExp) {
 | |
|         value = value.toString();
 | |
|     }
 | |
|     return value;
 | |
| }
 | |
| 
 | |
| function run(content) {
 | |
|     syntax = esprima.parse(content, options);
 | |
|     console.log(JSON.stringify(syntax, adjustRegexLiteral, 4));
 | |
| }
 | |
| 
 | |
| try {
 | |
|     if (fname && (fname !== '-' || forceFile)) {
 | |
|         run(fs.readFileSync(fname, 'utf-8'));
 | |
|     } else {
 | |
|         var content = '';
 | |
|         process.stdin.resume();
 | |
|         process.stdin.on('data', function(chunk) {
 | |
|             content += chunk;
 | |
|         });
 | |
|         process.stdin.on('end', function() {
 | |
|             run(content);
 | |
|         });
 | |
|     }
 | |
| } catch (e) {
 | |
|     console.log('Error: ' + e.message);
 | |
|     process.exit(1);
 | |
| }
 |