lib/parser/css.js
function (source) {
			walker.init(source);
			session.tokens = [];

			// for empty source, return single space token
			if (!source) {
				session.tokens.push(this.white());
			} else {
				while (walker.ch !== '') {
					tokenize();
				}
			}

			var tokens = session.tokens;
			session.tokens = null;
			return tokens;
		}
function (source) {
			walker.init(source);
			session.tokens = [];

			// for empty source, return single space token
			if (!source) {
				session.tokens.push(this.white());
			} else {
				while (walker.ch !== '') {
					tokenize();
				}
			}

			var tokens = session.tokens;
			session.tokens = null;
			return tokens;
		}
function ( source ) { walker . init ( source ) ; session . tokens = [ ] ; // for empty source, return single space token if ( ! source ) { session . tokens . push ( this . white ( ) ) ; } else { while ( walker . ch !== '' ) { tokenize ( ) ; } } var tokens = session . tokens ; session . tokens = null ; return tokens ; }
Sprits given source into tokens
@param {String} source
@returns {Array}
Sprits given source into tokens