小编Gaf*_*aff的帖子

我正在尝试将Bart Kiers的ANTLR PCRE语法(参见:http://big-o.nl/apps/pcreparser/pcre/PCREParser.html)构建到JS目标.我得到它的唯一方法是使用全局回溯和memoization,它生成的代码在这里是无效的语法:

grammar PCRE;

options {
    language=JavaScript;
    backtrack=true;
    memoize=true;
}

parse
   :  regexAtom* EOF
   ;

 ... and the rest of the grammar as seen: http://big-o.nl/apps/pcreparser/pcre/PCREParser.html

词法分析器生成的代码如下所示:

//$ANTLR 3.4 PCRE.g 2011-11-19 23:22:35

var PCRELexer = function(input, state) {
// alternate constructor @todo
// public PCRELexer(CharStream input)
// public PCRELexer(CharStream input, RecognizerSharedState state) {
    if (!state) {
        state = new org.antlr.runtime.RecognizerSharedState();
    }

    (function(){
    }).call(this);

    PCRELexer.superclass.constructor.call(this, input, state);

    };


org.antlr.lang.augmentObject(PCRELexer, {
     : ,
     : ,
     : ,
     : …