jscc-parser/bin/jscc-rhino.js

A LALR(1) Parser Generator for JavaScript written in JavaScript.

/*
 almond 0.3.2 Copyright jQuery Foundation and other contributors.
 Released under MIT license, http://github.com/requirejs/almond/LICENSE
*/
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"undefined." : "null."));\r\n\t\t\t}\r\n\t\t\tvar p, st;\r\n\t\t\tfor (p \x3d 1 \x3c\x3c 8, st \x3d line; p; p \x3e\x3e\x3d 1) {\r\n\t\t\t\tif ((chr \x26 p) !\x3d\x3d 0) {\r\n\t\t\t\t\tst \x3d st[1];\r\n\t\t\t\t} else {\r\n\t\t\t\t\tst \x3d st[0];\r\n\t\t\t\t}\r\n\t\t\t\tif (typeof st \x3d\x3d\x3d "undefined") {\r\n\t\t\t\t    st \x3d null;\r\n\t\t\t\t}\r\n\t\t\t\tif (st \x3d\x3d\x3d null)break;\r\n\t\t\t\tif (Array.isArray(st))continue;\r\n\t\t\t\tbreak;\r\n\t\t\t}\r\n\t\t\tvar ac \x3d this._dfaData[this.state].accept;\r\n\t\t\tthis.state \x3d /** @type {?number} */ (st);\r\n\t\t\tif (ac !\x3d\x3d -1) {\r\n\t\t\t\tthis.match \x3d /** @type{number} */ (ac);\r\n\t\t\t\tthis.match_pos \x3d pos;\r\n\t\t\t}\r\n\t\t}\r\n\t};\r\n##TABLES##\r\n##LABELS##\r\n\tvar ACTIONS \x3d (function(){\r\n\t\tvar PCB \x3d {};\r\n\t\tvar actions \x3d ##ACTIONS##;\r\n\t\treturn function (/** number */ act, /** Array\x3c*\x3e */ vstack, /** !PcbClass */ pcb){\r\n\t\t\ttry{\r\n\t\t\t\tPCB \x3d pcb;\r\n\t\t\t\treturn actions[act].apply(null,vstack);\r\n\t\t\t}catch(e){\r\n\t\t\t\tif(e instanceof ReturnValue)return e.valueOf();\r\n\t\t\t\tthrow e;\r\n\t\t\t}\r\n\t\t}\r\n\t})();\r\n\r\n\t/**\r\n\t * @param {number} top\r\n\t * @param {?number} la\r\n\t * @returns {?number}\r\n     */\r\n\tfunction get_act(top, la){\t\r\n\t\tfor(var i \x3d 0; i \x3c act_tab[top].length; i+\x3d2)\r\n\t\t\tif(act_tab[top][i] \x3d\x3d\x3d la)\r\n\t\t\t\treturn act_tab[top][i+1];\r\n\t\treturn null;\r\n\t}\r\n\tfunction get_goto(top, pop){\t\r\n\t\tfor(var i \x3d 0; i \x3c goto_tab[top].length; i+\x3d2)\r\n\t\t\tif(goto_tab[top][i] \x3d\x3d\x3d pop)\r\n\t\t\t\treturn goto_tab[top][i+1];\r\n\t\treturn null;\r\n\t}\r\n\r\n\t/**\r\n\t * @param {!string} src\r\n\t * @constructor\r\n     */\r\n\tvar PcbClass \x3d function(src) {\r\n\t\tthis.src \x3d src;\r\n\t};\r\n\t/**\r\n\t * @type {number}\r\n     */\r\n\tPcbClass.prototype.line \x3d 1;\r\n\t/**\r\n\t * @type {number}\r\n     */\r\n\tPcbClass.prototype.column \x3d 1;\r\n\t/**\r\n\t * @type {number}\r\n     */\r\n\tPcbClass.prototype.offset \x3d 0;\r\n\t/**\r\n\t * @type {number}\r\n     */\r\n\tPcbClass.prototype.error_step \x3d 0;\r\n\t/**\r\n\t * @type {string}\r\n     */\r\n\tPcbClass.prototype.src \x3d "";\r\n\t/**\r\n\t * @type {string}\r\n     */\r\n\tPcbClass.prototype.att \x3d "";\r\n\t/**\r\n\t * @type {?number}\r\n     */\r\n\tPcbClass.prototype.la \x3d null;\r\n\t/**\r\n\t * @type {?number}\r\n     */\r\n\tPcbClass.prototype.act \x3d null;\r\n\t/**\r\n\t * @returns {?number}\r\n     */\r\n\tPcbClass.prototype.lex \x3d function() {\r\n        var /** number */ start, /** number */ pos, /** number */ chr, actionResult;\r\n\t\tvar dfa \x3d new DfaLex();\r\n\t\tvar loop \x3d true;\r\n\t\twhile(loop){\r\n\t\t\tdfa.match_pos \x3d 0;\r\n\t\t\tpos \x3d this.offset + 1;\r\n\t\t\tdo{\r\n\t\t\t\tpos--;\r\n\t\t\t\tdfa.state \x3d 0;\r\n\t\t\t\tdfa.match \x3d null;\r\n\t\t\t\tstart \x3d pos;\r\n\t\t\t\tif(this.src.length \x3c\x3d start) {\r\n\t\t\t\t\tthis.la \x3d eof;\r\n\t\t\t\t\treturn eof;\r\n\t\t\t\t}\r\n\t\t\t\tdo{\r\n\t\t\t\t\tchr \x3d this.src.charCodeAt(pos);\r\n\t\t\t\t\tdfa.exec(chr,pos);\r\n\t\t\t\t\tif(dfa.state !\x3d\x3d null)\r\n\t\t\t\t\t\tthis.accountChar(chr);\r\n\t\t\t\t\tpos++;\r\n\t\t\t\t}while(dfa.state !\x3d\x3d null);\r\n\t\t\t}while(whitespace \x3e -1 \x26\x26 dfa.match \x3d\x3d\x3d whitespace);\r\n\t\t\tif(dfa.match !\x3d\x3d null){\r\n\t\t\t\tthis.att \x3d this.src.slice(start, dfa.match_pos);\r\n\t\t\t\tthis.offset \x3d dfa.match_pos;\r\n\t\t\t\tactionResult \x3d TERMINAL_ACTIONS(this,dfa.match);\r\n\t\t\t\tif(dfa.state !\x3d\x3d null)\r\n\t\t\t\t\tthis.accountChar(chr);\r\n\t\t\t\tif(actionResult \x3d\x3d\x3d Continue)\r\n\t\t\t\t\tcontinue;\r\n\t\t\t\tthis.att \x3d actionResult;\r\n\t\t\t}else {\r\n\t\t\t\tthis.att \x3d "";\r\n\t\t\t}\r\n\t\t\tloop \x3d false;\r\n\t\t}\r\n\t\tthis.la \x3d dfa.match;\r\n\t\treturn this.la;\r\n\t};\r\n\t/**\r\n\t * @param {number} chr\r\n     */\r\n    PcbClass.prototype.accountChar \x3d function(chr) {\r\n\t\tif( chr \x3d\x3d\x3d 10 ){\r\n\t\t\tthis.line++;\r\n\t\t\tthis.column \x3d 0;\r\n\t\t}\r\n\t\tthis.column++;\r\n\t};\r\n\tfunction parse(/** string */ src, err_off, err_la){\r\n\t\t/**\r\n\t\t * @type {!Array\x3cnumber\x3e}\r\n         */\r\n\t\tvar\t\tsstack\t\t\t\x3d [0];\r\n\t\t/**\r\n\t\t * @type {!Array\x3c*\x3e}\r\n         */\r\n\t\tvar\t\tvstack\t\t\t\x3d [0];\r\n\t\t/**\r\n\t\t * @type {number}\r\n         */\r\n\t\tvar \terr_cnt\t\t\t\x3d 0;\r\n\t\t/**\r\n\t\t * @type {*}\r\n\t\t */\r\n\t\tvar\t\trval;\r\n\t\t/**\r\n\t\t * @type {?number}\r\n\t\t */\r\n\t\tvar\t\tact;\r\n\t\t/**\r\n\t\t * @type {number}\r\n\t\t */\r\n\t\tvar i \x3d 0;\r\n\r\n\t\tvar PCB\t\x3d new PcbClass(src);\r\n\t\terr_off\t\x3d err_off || [];\r\n\t\terr_la \x3d err_la || [];\r\n\t\tPCB.lex();\r\n\t\twhile(true){\r\n\t\t\tPCB.act \x3d get_act(sstack[0],PCB.la);\r\n\t\t\tif(PCB.act \x3d\x3d\x3d null \x26\x26 defact_tab[sstack[0]] \x3e\x3d 0)\r\n\t\t\t\tPCB.act \x3d -defact_tab[sstack[0]];\r\n\t\t\tif(PCB.act \x3d\x3d\x3d null){//Parse error? Try to recover!\r\n\t\t\t\t//Report errors only when error_step is 0, and this is not a\r\n\t\t\t\t//subsequent error from a previous parse\r\n\t\t\t\tif(PCB.error_step \x3d\x3d\x3d 0){\r\n\t\t\t\t\terr_cnt++;\r\n\t\t\t\t\terr_off.unshift(PCB.offset - PCB.att.length);\r\n\t\t\t\t\terr_la.unshift([]);\r\n\t\t\t\t\tfor(i \x3d 0; i \x3c act_tab[sstack[0]].length; i+\x3d2)\r\n\t\t\t\t\t\terr_la[0].push(labels[act_tab[sstack[0]][i]]);\r\n\t\t\t\t}\r\n\t\t\t\t//Perform error recovery\t\t\t\r\n\t\t\t\twhile(sstack.length \x3e 1 \x26\x26 PCB.act \x3d\x3d\x3d null){\r\n\t\t\t\t\tsstack.shift();\r\n\t\t\t\t\tvstack.shift();\r\n\t\t\t\t\t//Try to shift on error token\r\n\t\t\t\t\tPCB.act \x3d get_act(sstack[0],PCB.la);\r\n\t\t\t\t\tif(PCB.act \x3d\x3d\x3d error_token){\r\n\t\t\t\t\t\tsstack.unshift(PCB.act);\r\n\t\t\t\t\t\tvstack.unshift("");\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\t//Is it better to leave the parser now?\r\n\t\t\t\tif(sstack.length \x3e 1 \x26\x26 PCB.act !\x3d\x3d null){\r\n\t\t\t\t\t//Ok, now try to shift on the next tokens\r\n\t\t\t\t\twhile(PCB.la !\x3d\x3d eof){\r\n\t\t\t\t\t\tPCB.act \x3d act_tab[sstack[0]][i+1];\r\n\t\t\t\t\t\tif(PCB.act !\x3d null)break;\r\n\t\t\t\t\t\twhile(PCB.lex() !\x3d null)PCB.offset++;\r\n\t\t\t\t\t}\r\n\t\t\t\t}\r\n\t\t\t\tif(PCB.act \x3d\x3d\x3d null || PCB.la \x3d\x3d\x3d eof){\r\n\t\t\t\t\tbreak;\r\n\t\t\t\t}\r\n\t\t\t\t//Try to parse the next three tokens successfully...\r\n\t\t\t\tPCB.error_step \x3d 3;\r\n\t\t\t}\r\n\t\t\tif(PCB.act \x3e 0){//Shift\r\n\t\t\t\t//Parse tree generation\r\n\t\t\t\tsstack.unshift(PCB.act);\r\n\t\t\t\tvstack.unshift(PCB.att);\r\n\t\t\t\tPCB.lex();\r\n\t\t\t\t//Successfull shift and right beyond error recovery?\r\n\t\t\t\tif(PCB.error_step \x3e 0)\r\n\t\t\t\t\tPCB.error_step--;\r\n\t\t\t}else{\t//Reduce\t\r\n\t\t\t\tact \x3d -PCB.act;\r\n\t\t\t\t//vstack.unshift(vstack);\r\n\t\t\t\trval \x3d ACTIONS(act,vstack,PCB);\r\n\t\t\t\t//vstack.shift();\r\n\t\t\t\tsstack.splice(0,pop_tab[act][1]);\r\n\t\t\t\tvstack.splice(0,pop_tab[act][1]);\r\n\t\t\t\t\r\n\t\t\t\tPCB.act \x3d get_goto(sstack[0],pop_tab[act][0]);\r\n\t\t\t\t//Do some parse tree construction if desired\r\n\t\t\t\t//Goal symbol match?\r\n\t\t\t\tif(act \x3d\x3d\x3d 0) break; //Don\'t use PCB.act here!\r\n\t\t\t\r\n\t\t\t\t//...and push it!\r\n\t\t\t\tsstack.unshift(PCB.act);\r\n\t\t\t\tvstack.unshift(rval);\r\n\t\t\t}\r\n\t\t}\r\n\t\treturn err_cnt;\r\n\t}\r\n\treturn parse;\r\n})(##EOF##,##WHITESPACE##,##ERROR_TOKEN##);\r\n\r\n##FOOTER##\r\n'});
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