catharsis/bin/parseType.js

A JavaScript parser for Google Closure Compiler and JSDoc type expressions.

#!/usr/bin/env node

'use strict';

// Command-line tool that parses a type expression and dumps a JSON version of the parse tree.
var catharsis = require('../catharsis');
var path = require('path');
var util = require('util');

var command = path.basename(process.argv[1]);
var typeExpression = process.argv[2];
var jsdoc = process.argv[3] === '--jsdoc' ? true : false;
var parsedType;

var opts = {
	jsdoc: jsdoc
};

function usage() {
	console.log(util.format('Usage:\n    %s typeExpression [--jsdoc]', command));
}

if (!typeExpression) {
	usage();
	process.exit(1);
} else {
	try {
		parsedType = catharsis.parse(typeExpression, opts);
	} catch (e) {
		console.error(util.format('Unable to parse "%s" (exception follows):', typeExpression));
		console.error(e.stack || e.message);
		process.exit(1);
	}

	console.log(JSON.stringify(parsedType, null, 2));
	process.exit(0);
}