39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
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#!/usr/bin/env node
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var fs = require('fs');
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var nearley = require('../lib/nearley.js');
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var opts = require('commander');
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var Compile = require('../lib/compile.js');
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var StreamWrapper = require('../lib/stream.js');
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var version = require('../package.json').version;
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opts.version(version, '-v, --version')
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.arguments('<file.ne>')
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.option('-o, --out [filename.js]', 'File to output to (defaults to stdout)', false)
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.option('-e, --export [name]', 'Variable to set parser to', 'grammar')
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.option('-q, --quiet', 'Suppress linter')
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.option('--nojs', 'Do not compile postprocessors')
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.parse(process.argv);
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var input = opts.args[0] ? fs.createReadStream(opts.args[0]) : process.stdin;
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var output = opts.out ? fs.createWriteStream(opts.out) : process.stdout;
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var parserGrammar = nearley.Grammar.fromCompiled(require('../lib/nearley-language-bootstrapped.js'));
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var parser = new nearley.Parser(parserGrammar);
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var generate = require('../lib/generate.js');
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var lint = require('../lib/lint.js');
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input
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.pipe(new StreamWrapper(parser))
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.on('finish', function() {
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parser.feed('\n');
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var c = Compile(
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parser.results[0],
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Object.assign({version: version}, opts)
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);
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if (!opts.quiet) lint(c, {'out': process.stderr, 'version': version});
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output.write(generate(c, opts.export));
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});
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