canonical/node_modules/gonzales-pe/lib/parse.js

Canonical code style linter and formatter for JavaScript, SCSS, CSS and JSON.

'use strict';var fs=require('fs');var ParsingError=require('./parsing-error');var RootNode=require('./node/root-node');var Defaults={SYNTAX:'css', NEED_INFO:false, CSS_RULE:'stylesheet', JS_RULE:'program'};function parse(css, options){if(typeof css !== 'string')throw new Error('Please, pass a string to parse');else if(!css)return require('./node/empty-node')();var syntax=options && options.syntax || Defaults.SYNTAX;var needInfo=options && options.needInfo || Defaults.NEED_INFO;var rule=options && options.rule || (syntax === 'js'?Defaults.JS_RULE:Defaults.CSS_RULE);if(!fs.existsSync(__dirname + '/' + syntax))return console.error('Syntax "' + syntax + '" is not supported yet, sorry');var getTokens=require('./' + syntax + '/tokenizer');var mark=require('./' + syntax + '/mark');var parse=require('./' + syntax + '/parse');var tokens=getTokens(css);mark(tokens);try{var ast=parse(tokens, rule, needInfo);}catch(e) {throw new ParsingError(e, css);}return new RootNode(ast);}function buildIndex(ast, index, indexHasChanged){if(!Array.isArray(ast.content))return;for(var i=0, l=ast.content.length; i < l; i++) {var node=ast.content[i];if(!index[node.type])index[node.type] = [];node.indexHasChanged = indexHasChanged;index[node.type].push({node:node, parent:ast, i:i});buildIndex(node, index, indexHasChanged);}}function traverseByType(type, callback){if(!this.index){this.index = {stylesheet:[this]};this.indexHasChanged = [0];buildIndex(this, this.index, this.indexHasChanged);}var nodes=this.index[type];var breakLoop;if(!nodes)return;for(var i=0, l=nodes.length; i < l; i++) {if(this.indexHasChanged[0]){this.index = {stylesheet:[this]};this.indexHasChanged = [0];buildIndex(this, this.index, this.indexHasChanged);nodes = this.index[type];i += nodes.length - l;l = nodes.length;}var node=nodes[i];breakLoop = callback(node.node, node.i, node.parent);if(breakLoop === null)break;}}function traverseByTypes(types, callback){for(var i=0, l=types.length; i < l; i++) {this.traverseByType(types[i], callback);}}module.exports = parse;