72 lines
8.1 KiB
JavaScript
72 lines
8.1 KiB
JavaScript
/*
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Copyright (c) 2004 Jan-Klaas Kollhof
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This file is part of the JavaScript o lait library(jsolait).
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jsolait is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This software is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this software; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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Module("lang","0.3.7",function(mod){var ISODate=function(d){if(/^(\d{4})(\d{2})(\d{2})T(\d{2}):(\d{2}):(\d{2})/.test(d)){return new Date(Date.UTC(RegExp.$1,RegExp.$2-1,RegExp.$3,RegExp.$4,RegExp.$5,RegExp.$6));}else{throw new mod.Exception("Not an ISO date: "+d);}}
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mod.JSONParser=Class("JSONParser",function(publ,supr){publ.init=function(){this.libs={};var sys={"ISODate":ISODate};this.addLib(sys,"sys",["ISODate"]);}
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publ.addLib=function(obj,name,exports){if(exports==null){this.libs[name]=obj;}else{for(var i=0;i<exports.length;i++){this.libs[name+"."+exports[i]]=obj[exports[i]];}}}
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var EmptyValue={};var SeqSep={};var parseValue=function(tkns,libs){var tkn=tkns.nextNonWS();switch(tkn.type){case mod.tokens.STR:case mod.tokens.NUM:return eval(tkn.value);case mod.tokens.NAME:return parseName(tkn.value);case mod.tokens.OP:switch(tkn.value){case"[":return parseArray(tkns,libs);break;case"{":return parseObj(tkns,libs);break;case"}":case"]":return EmptyValue;case",":return SeqSep;default:throw new mod.Exception("expected '[' or '{' but found: '"+tkn.value+"'");}}
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return EmptyValue;}
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var parseArray=function(tkns,libs){var a=[];while(!tkns.finished()){var v=parseValue(tkns,libs);if(v==EmptyValue){return a;}else{a.push(v);v=parseValue(tkns,libs);if(v==EmptyValue){return a;}else if(v!=SeqSep){throw new mod.Exception("',' expected but found: '"+v+"'");}}}
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throw new mod.Exception("']' expected");}
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var parseObj=function(tkns,libs){var obj={};var nme=""
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while(!tkns.finished()){var tkn=tkns.nextNonWS();if(tkn.type==mod.tokens.STR){var nme=eval(tkn.value);tkn=tkns.nextNonWS();if(tkn.value==":"){var v=parseValue(tkns,libs);if(v==SeqSep||v==EmptyValue){throw new mod.Exception("value expected");}else{obj[nme]=v;v=parseValue(tkns,libs);if(v==EmptyValue){return transformObj(obj,libs);}else if(v!=SeqSep){throw new mod.Exception("',' expected");}}}else{throw new mod.Exception("':' expected but found: '"+tkn.value+"'");}}else if(tkn.value=="}"){return transformObj(obj,libs);}else{throw new mod.Exception("String expected");}}
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throw new mod.Exception("'}' expected.")}
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var transformObj=function(obj,libs){var o2;if(obj.jsonclass!=null){var clsName=obj.jsonclass[0];var params=obj.jsonclass[1]
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if(libs[clsName]){o2=libs[clsName].apply(this,params);for(var nme in obj){if(nme!="jsonclass"){if(typeof obj[nme]!="function"){o2[nme]=obj[nme];}}}}else{throw new mod.Exception("jsonclass not found: "+clsName);}}else{o2=obj;}
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return o2;}
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var parseName=function(name){switch(name){case"null":return null;case"true":return true;case"false":return false;default:throw new mod.Exception("'null', 'true', 'false' expected but found: '"+name+"'");}}
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publ.jsonToObj=function(data){var t=new mod.Tokenizer(data);return parseValue(t,this.libs);}
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publ.objToJson=function(obj){if(obj==null){return"null";}else{return obj.toJSON();}}})
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mod.parser=new mod.JSONParser();mod.jsonToObj=function(src){return mod.parser.jsonToObj(src);}
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mod.objToJson=function(obj){return mod.parser.objToJson(obj);}
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mod.tokens={};mod.tokens.WSP=0;mod.tokens.OP=1;mod.tokens.STR=2;mod.tokens.NAME=3;mod.tokens.NUM=4;mod.tokens.ERR=5;mod.tokens.NL=6;mod.tokens.COMMENT=7;mod.tokens.DOCCOMMENT=8;mod.tokens.REGEXP=9;mod.Token=Class(function(publ,supr){publ.init=function(type,value,pos,err){this.type=type;this.value=value;this.pos=pos;this.err=err;}})
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mod.Tokenizer=Class("Tokenizer",function(publ,supr){publ.init=function(s){this._working=s;this._pos=0;}
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publ.finished=function(){return this._working.length==0;}
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publ.nextNonWS=function(nlIsWS){var tkn=this.next();while((tkn.type==mod.tokens.WSP)||(nlIsWS&&(tkn.type==mod.tokens.NL))){tkn=this.next();}
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return tkn;}
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publ.next=function(){if(this._working==""){throw new mod.Exception("Empty");}
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var s1=this._working.charAt(0);var s2=s1+this._working.charAt(1);var s3=s2+this._working.charAt(2);var rslt=[];switch(s1){case'"':case"'":try{s1=extractQString(this._working);rslt=new mod.Token(mod.tokens.STR,s1,this._pos);}catch(e){rslt=new mod.Token(mod.tokens.ERR,s1,this._pos,e);}
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break;case"\n":case"\r":rslt=new mod.Token(mod.tokens.NL,s1,this._pos);break;case"-":s1=this._working.match(/-\d+\.\d+|-\d+/)[0];if(/^-\d|-\d\.\d/.test(s1)){rslt=new mod.Token(mod.tokens.NUM,s1,this._pos);break;}
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case"{":case"}":case"[":case"]":case"(":case")":case":":case",":case".":case";":case"*":case"-":case"+":case"=":case"<":case">":case"!":case"|":case"&":switch(s2){case"==":case"!=":case"<>":case"<=":case">=":case"||":case"&&":rslt=new mod.Token(mod.tokens.OP,s2,this._pos);break;default:rslt=new mod.Token(mod.tokens.OP,s1,this._pos);}
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break;case"/":if(s2=="//"||s3=="///"){s1=extractSLComment(this._working);rslt=new mod.Token(s1.charAt(2)!="/"?mod.tokens.COMMENT:mod.tokens.DOCCOMMENT,s1,this._pos);}else if(s2=="/*"||s3=="/**"){try{s1=extractMLComment(this._working);rslt=new mod.Token(s3!="/**"?mod.tokens.COMMENT:mod.tokens.DOCCOMMENT,s1,this._pos);}catch(e){rslt=new mod.Token(mod.tokens.ERR,s3!="/**"?s2:s3,this._pos,e);}}else{try{s1=extractRegExp(this._working);rslt=new mod.Token(mod.tokens.REGEXP,s1,this._pos);}catch(e){rslt=new mod.Token(mod.tokens.OP,s1,this._pos,e);}}
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break;case" ":var i=0;var s="";while(this._working.charAt(i)==" "){s+=" ";i++;}
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rslt=new mod.Token(mod.tokens.WSP,s,this._pos);break;default:s1=this._working.match(/\d+\.\d+|\d+|\w+/)[0];if(/^\d|\d\.\d/.test(s1)){rslt=new mod.Token(mod.tokens.NUM,s1,this._pos);}else{rslt=new mod.Token(mod.tokens.NAME,s1,this._pos);}}
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this._working=this._working.slice(rslt.value.length);this._pos+=rslt.value.length;return rslt;}
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var searchQoute=function(s,q){if(q=="'"){return s.search(/[\\']/);}else{return s.search(/[\\"]/);}}
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var extractQString=function(s){if(s.charAt(0)=="'"){var q="'";}else{var q='"';}
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s=s.slice(1);var rs="";var p=searchQoute(s,q);while(p>=0){if(p>=0){if(s.charAt(p)==q){rs+=s.slice(0,p+1);s=s.slice(p+1);return q+rs;}else{rs+=s.slice(0,p+2);s=s.slice(p+2);}}
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p=searchQoute(s,q);}
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throw new mod.Exception("End of String expected.");}
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var extractSLComment=function(s){var p=s.search(/\n/);if(p>=0){return s.slice(0,p+1);}else{return s;}}
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var extractMLComment=function(s){var p=s.search(/\*\//);if(p>=0){return s.slice(0,p+2);}else{throw new mod.Exception("End of comment expected.");}}
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var extractRegExp=function(s){var p=0;for(var i=0;i<s.length;i++){if(s.charAt(i)=="/"){p=i;}
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if(s.charAt(i)=="\n"){i=s.length;}}
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return s.slice(0,p+1);}})
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Object.prototype.toJSON=function(){var v=[];for(attr in this){if(typeof this[attr]!="function"){v.push('"'+attr+'": '+mod.objToJson(this[attr]));}}
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return"{"+v.join(", ")+"}";}
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String.prototype.toJSON=function(){var s='"'+this.replace(/(["\\])/g,'\\$1')+'"';s=s.replace(/(\n)/g,"\\n");return s;}
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Number.prototype.toJSON=function(){return this.toString();}
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Boolean.prototype.toJSON=function(){return this.toString();}
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Date.prototype.toJSON=function(){var padd=function(s,p){s=p+s
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return s.substring(s.length-p.length)}
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var y=padd(this.getUTCFullYear(),"0000");var m=padd(this.getUTCMonth()+1,"00");var d=padd(this.getUTCDate(),"00");var h=padd(this.getUTCHours(),"00");var min=padd(this.getUTCMinutes(),"00");var s=padd(this.getUTCSeconds(),"00");var isodate=y+m+d+"T"+h+":"+min+":"+s
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return'{"jsonclass":["sys.ISODate", ["'+isodate+'"]]}';}
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Array.prototype.toJSON=function(){var v=[];for(var i=0;i<this.length;i++){v.push(mod.objToJson(this[i]));}
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return"["+v.join(", ")+"]";}
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mod.test=function(){try{print(mod.jsonToObj("['sds', -12377,-1212.1212, 12, '-2312']").toJSON());}catch(e){print(e.toTraceString());}}}) |