41 lines
799 B
JavaScript
41 lines
799 B
JavaScript
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/* Parser.js
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* written by Colin Kuebler 2012
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* Part of LDT, dual licensed under GPLv3 and MIT
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* Generates a tokenizer from regular expressions for TextareaDecorator
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*/
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function Parser( rules, i ){
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/* INIT */
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var api = this;
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// variables used internally
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var i = i ? 'i' : '';
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var parseRE = null;
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var ruleSrc = [];
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var ruleMap = {};
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api.add = function( rules ){
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for( var rule in rules ){
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var s = rules[rule].source;
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ruleSrc.push( s );
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ruleMap[rule] = new RegExp('^('+s+')$', i );
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}
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parseRE = new RegExp( ruleSrc.join('|'), 'g'+i );
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};
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api.tokenize = function(input){
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return input.match(parseRE);
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};
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api.identify = function(token){
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for( var rule in ruleMap ){
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if( ruleMap[rule].test(token) ){
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return rule;
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}
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}
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};
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api.add( rules );
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return api;
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};
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