The Tor Browser: browser/devtools/sourceeditor/codemirror/fold/xml-fold.js@6474c204b198 (annotated)

browser/devtools/sourceeditor/codemirror/fold/xml-fold.js@6474c204b198 (annotated)

browser/devtools/sourceeditor/codemirror/fold/xml-fold.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 (function() {
   "use strict";
   var Pos = CodeMirror.Pos;
   function cmp(a, b) { return a.line - b.line || a.ch - b.ch; }
   var nameStartChar = "A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD";
   var nameChar = nameStartChar + "\-\:\.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040";
   var xmlTagStart = new RegExp("<(/?)([" + nameStartChar + "][" + nameChar + "]*)", "g");
   function Iter(cm, line, ch, range) {
     this.line = line; this.ch = ch;
     this.cm = cm; this.text = cm.getLine(line);
     this.min = range ? range.from : cm.firstLine();
     this.max = range ? range.to - 1 : cm.lastLine();
   }
   function tagAt(iter, ch) {
     var type = iter.cm.getTokenTypeAt(Pos(iter.line, ch));
     return type && /\btag\b/.test(type);
   }
   function nextLine(iter) {
     if (iter.line >= iter.max) return;
     iter.ch = 0;
     iter.text = iter.cm.getLine(++iter.line);
     return true;
   }
   function prevLine(iter) {
     if (iter.line <= iter.min) return;
     iter.text = iter.cm.getLine(--iter.line);
     iter.ch = iter.text.length;
     return true;
   }
   function toTagEnd(iter) {
     for (;;) {
       var gt = iter.text.indexOf(">", iter.ch);
       if (gt == -1) { if (nextLine(iter)) continue; else return; }
       if (!tagAt(iter, gt + 1)) { iter.ch = gt + 1; continue; }
       var lastSlash = iter.text.lastIndexOf("/", gt);
       var selfClose = lastSlash > -1 && !/\S/.test(iter.text.slice(lastSlash + 1, gt));
       iter.ch = gt + 1;
       return selfClose ? "selfClose" : "regular";
     }
   }
   function toTagStart(iter) {
     for (;;) {
       var lt = iter.ch ? iter.text.lastIndexOf("<", iter.ch - 1) : -1;
       if (lt == -1) { if (prevLine(iter)) continue; else return; }
       if (!tagAt(iter, lt + 1)) { iter.ch = lt; continue; }
       xmlTagStart.lastIndex = lt;
       iter.ch = lt;
       var match = xmlTagStart.exec(iter.text);
       if (match && match.index == lt) return match;
     }
   }
   function toNextTag(iter) {
     for (;;) {
       xmlTagStart.lastIndex = iter.ch;
       var found = xmlTagStart.exec(iter.text);
       if (!found) { if (nextLine(iter)) continue; else return; }
       if (!tagAt(iter, found.index + 1)) { iter.ch = found.index + 1; continue; }
       iter.ch = found.index + found[0].length;
       return found;
     }
   }
   function toPrevTag(iter) {
     for (;;) {
       var gt = iter.ch ? iter.text.lastIndexOf(">", iter.ch - 1) : -1;
       if (gt == -1) { if (prevLine(iter)) continue; else return; }
       if (!tagAt(iter, gt + 1)) { iter.ch = gt; continue; }
       var lastSlash = iter.text.lastIndexOf("/", gt);
       var selfClose = lastSlash > -1 && !/\S/.test(iter.text.slice(lastSlash + 1, gt));
       iter.ch = gt + 1;
       return selfClose ? "selfClose" : "regular";
     }
   }
   function findMatchingClose(iter, tag) {
     var stack = [];
     for (;;) {
       var next = toNextTag(iter), end, startLine = iter.line, startCh = iter.ch - (next ? next[0].length : 0);
       if (!next || !(end = toTagEnd(iter))) return;
       if (end == "selfClose") continue;
       if (next[1]) { // closing tag
         for (var i = stack.length - 1; i >= 0; --i) if (stack[i] == next[2]) {
           stack.length = i;
           break;
         }
         if (i < 0 && (!tag || tag == next[2])) return {
           tag: next[2],
           from: Pos(startLine, startCh),
           to: Pos(iter.line, iter.ch)
         };
       } else { // opening tag
         stack.push(next[2]);
       }
     }
   }
   function findMatchingOpen(iter, tag) {
     var stack = [];
     for (;;) {
       var prev = toPrevTag(iter);
       if (!prev) return;
       if (prev == "selfClose") { toTagStart(iter); continue; }
       var endLine = iter.line, endCh = iter.ch;
       var start = toTagStart(iter);
       if (!start) return;
       if (start[1]) { // closing tag
         stack.push(start[2]);
       } else { // opening tag
         for (var i = stack.length - 1; i >= 0; --i) if (stack[i] == start[2]) {
           stack.length = i;
           break;
         }
         if (i < 0 && (!tag || tag == start[2])) return {
           tag: start[2],
           from: Pos(iter.line, iter.ch),
           to: Pos(endLine, endCh)
         };
       }
     }
   }
   CodeMirror.registerHelper("fold", "xml", function(cm, start) {
     var iter = new Iter(cm, start.line, 0);
     for (;;) {
       var openTag = toNextTag(iter), end;
       if (!openTag || iter.line != start.line || !(end = toTagEnd(iter))) return;
       if (!openTag[1] && end != "selfClose") {
         var start = Pos(iter.line, iter.ch);
         var close = findMatchingClose(iter, openTag[2]);
         return close && {from: start, to: close.from};
       }
     }
   });
   CodeMirror.tagRangeFinder = CodeMirror.fold.xml; // deprecated
   CodeMirror.findMatchingTag = function(cm, pos, range) {
     var iter = new Iter(cm, pos.line, pos.ch, range);
     if (iter.text.indexOf(">") == -1 && iter.text.indexOf("<") == -1) return;
     var end = toTagEnd(iter), to = end && Pos(iter.line, iter.ch);
     var start = end && toTagStart(iter);
     if (!end || end == "selfClose" || !start || cmp(iter, pos) > 0) return;
     var here = {from: Pos(iter.line, iter.ch), to: to, tag: start[2]};
     if (start[1]) { // closing tag
       return {open: findMatchingOpen(iter, start[2]), close: here, at: "close"};
     } else { // opening tag
       iter = new Iter(cm, to.line, to.ch, range);
       return {open: here, close: findMatchingClose(iter, start[2]), at: "open"};
     }
   };
   CodeMirror.findEnclosingTag = function(cm, pos, range) {
     var iter = new Iter(cm, pos.line, pos.ch, range);
     for (;;) {
       var open = findMatchingOpen(iter);
       if (!open) break;
       var forward = new Iter(cm, pos.line, pos.ch, range);
       var close = findMatchingClose(forward, open.tag);
       if (close) return {open: open, close: close};
     }
   };
   // Used by addon/edit/closetag.js
   CodeMirror.scanForClosingTag = function(cm, pos, name, end) {
     var iter = new Iter(cm, pos.line, pos.ch, end ? {from: 0, to: end} : null);
     return !!findMatchingClose(iter, name);
   };
 })();