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comparison lib/js/urweb.js @ 1813:4c61bb7acb9b

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Minor js optimizations. * flatten() now uses accumulator and join. * reuse regexps instead of allocating new each time
author Vladimir Shabanov <vshabanoff@gmail.com>
date Thu, 30 Aug 2012 17:58:37 +0400
parents ea5f920ffa35
children aadfc1a138d8
comparison
equal deleted inserted replaced
1812:ea5f920ffa35 1813:4c61bb7acb9b
593 593
594 function cr(n) { 594 function cr(n) {
595 return closures[n]; 595 return closures[n];
596 } 596 }
597 597
598 function flatten(cls, tr) { 598 function flattenAcc(a, cls, tr) {
599 if (tr.cat1 != null) 599 if (tr.cat1 != null) {
600 return flatten(cls, tr.cat1) + flatten(cls, tr.cat2); 600 flattenAcc(a, cls, tr.cat1);
601 else if (tr.closure != null) { 601 flattenAcc(a, cls, tr.cat2);
602 } else if (tr.closure != null) {
602 var cl = newClosure(tr.closure); 603 var cl = newClosure(tr.closure);
603 cls.v = cons(cl, cls.v); 604 cls.v = cons(cl, cls.v);
604 return "cr(" + cl + ")"; 605 a.push("cr(", cl.toString(), ")");
605 } else 606 } else
606 return tr; 607 a.push(tr);
608 }
609
610 function flatten(cls, tr) {
611 var a = [];
612 flattenAcc(a, cls, tr);
613 return a.join("");
607 } 614 }
608 615
609 function flattenLocal(s) { 616 function flattenLocal(s) {
610 var cls = {v : null}; 617 var cls = {v : null};
611 var r = flatten(cls, s); 618 var r = flatten(cls, s);
1245 } 1252 }
1246 1253
1247 function uf(s) { 1254 function uf(s) {
1248 if (s.length == 0) 1255 if (s.length == 0)
1249 return "_"; 1256 return "_";
1250 s = s.replace(new RegExp ("\\.", "g"), ".2E"); 1257 s = s.replace(/\./g, ".2E");
1251 return (s.charAt(0) == '_' ? "_" : "") + encodeURIComponent(s).replace(new RegExp ("%", "g"), "."); 1258 return (s.charAt(0) == '_' ? "_" : "") + encodeURIComponent(s).replace(/%/g, ".");
1252 } 1259 }
1253 1260
1254 function uu(s) { 1261 function uu(s) {
1255 if (s.length > 0 && s.charAt(0) == '_') { 1262 if (s.length > 0 && s.charAt(0) == '_') {
1256 s = s.substring(1); 1263 s = s.substring(1);
1257 } else if (s.length >= 3 && (s.charAt(0) == '%' || s.charAt(0) == '.') 1264 } else if (s.length >= 3 && (s.charAt(0) == '%' || s.charAt(0) == '.')
1258 && s.charAt(1) == '5' && (s.charAt(2) == 'f' || s.charAt(2) == 'F')) 1265 && s.charAt(1) == '5' && (s.charAt(2) == 'f' || s.charAt(2) == 'F'))
1259 s = s.substring(3); 1266 s = s.substring(3);
1260 s = s.replace(new RegExp ("\\+", "g"), " "); 1267 s = s.replace(/\+/g, " ");
1261 s = s.replace(new RegExp ("\\.", "g"), "%"); 1268 s = s.replace(/\./g, "%");
1262 return decodeURIComponent(s); 1269 return decodeURIComponent(s);
1263 } 1270 }
1264 1271
1265 function atr(s) { 1272 function atr(s) {
1266 return s.replace(new RegExp ("\"", "g"), "&quot;").replace(new RegExp ("&", "g"), "&amp;") 1273 return s.replace(/\"/g, "&quot;").replace(/&/g, "&amp;")
1267 } 1274 }
1268 1275
1269 function ub(b) { 1276 function ub(b) {
1270 return b ? "1" : "0"; 1277 return b ? "1" : "0";
1271 } 1278 }
1272 1279