yson.js
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;(function(){
// JSON: JavaScript Object Notation
// YSON: Yielding javaScript Object Notation
var yson = {}, u, sI = setTimeout.turn || (typeof setImmediate != ''+u && setImmediate) || setTimeout;
yson.parseAsync = function(text, done, revive, M){
var ctx = {i: 0, text: text, done: done, o: {}, l: text.length, up: []};
ctx.at = ctx.o;
//M = 1024 * 1024 * 100;
//M = M || 1024 * 64;
M = M || 1024 * 32;
parse();
function parse(){
//var S = +new Date;
var s = ctx.text, o = ctx.o;
var i = ctx.i, l = ctx.l, j = 0;
var w = ctx.w, b, tmp;
while(j++ < M){
var c = s[i++];
if(i > l){
ctx.end = true;
break;
}
if(w){
i = s.indexOf('"', i-1); c = s[i];
tmp = '\\' == s[i-1];
b = b || tmp;
if('"' == c && !tmp){
w = u;
tmp = ctx.s;
if(ctx.a){
tmp = s.slice(ctx.sl, i);
if(b){ tmp = JSON.parse('"'+tmp+'"') }
if(ctx.at instanceof Array){
ctx.at.push(ctx.s = tmp);
} else {
ctx.at[ctx.s] = ctx.s = tmp;
}
} else {
ctx.s = s.slice(ctx.sl, i);
if(b){ ctx.s = JSON.parse('"'+ctx.s+'"'); }
}
ctx.a = b = u;
}
++i;
} else {
switch(c){
case '"':
ctx.sl = i;
w = true;
break;
case ':':
ctx.ai = i;
ctx.a = true;
break;
case ',':
if(ctx.a || ctx.at instanceof Array){
if(tmp = s.slice(ctx.ai, i-1)){
if(u !== (tmp = value(tmp))){
if(ctx.at instanceof Array){
ctx.at.push(tmp);
} else {
ctx.at[ctx.s] = tmp;
}
}
}
}
ctx.a = u;
if(ctx.at instanceof Array){
ctx.a = true;
ctx.ai = i;
}
break;
case '{':
ctx.up.push(ctx.at);
if(ctx.at instanceof Array){
ctx.at.push(ctx.at = {});
} else
if(tmp = ctx.s){
ctx.at[tmp] = ctx.at = {};
}
ctx.a = u;
break;
case '}':
if(ctx.a){
if(tmp = s.slice(ctx.ai, i-1)){
if(u !== (tmp = value(tmp))){
if(ctx.at instanceof Array){
ctx.at.push(tmp);
} else {
ctx.at[ctx.s] = tmp;
}
}
}
}
ctx.a = u;
ctx.at = ctx.up.pop();
break;
case '[':
if(tmp = ctx.s){
ctx.up.push(ctx.at);
ctx.at[tmp] = ctx.at = [];
}
ctx.a = true;
break;
case ']':
if(ctx.a){
if(tmp = s.slice(ctx.ai, i-1)){
if(u !== (tmp = value(tmp))){
if(ctx.at instanceof Array){
ctx.at.push(tmp);
} else {
ctx.at[ctx.s] = tmp;
}
}
}
}
ctx.a = u;
ctx.at = ctx.up.pop();
break;
}
}
}
ctx.i = i;
ctx.w = w;
//console.log("!!!!!!!!", +new Date - S, ctx.i, ctx.l);
if(ctx.end){
ctx.done(u, ctx.o);
} else {
//setTimeout.turn(parse);
sI(parse);
}
}
}
function value(s){
var n = parseFloat(s);
if(!isNaN(n)){
return n;
}
s = s.trim();
if('true' == s){
return true;
}
if('false' == s){
return false;
}
if('null' == s){
return null;
}
}
module.exports = yson;
}());