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node_modules/esprima/bin/esparse.js
| 117 lines
| 4.1 KiB
| application/javascript
| JavascriptLexer
|
r789 | #!/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); | ||||
} | ||||