browser/devtools/sourceeditor/codemirror/fold/xml-fold.js@6474c204b198
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.
1 (function() {
2 "use strict";
4 var Pos = CodeMirror.Pos;
5 function cmp(a, b) { return a.line - b.line || a.ch - b.ch; }
7 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";
8 var nameChar = nameStartChar + "\-\:\.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040";
9 var xmlTagStart = new RegExp("<(/?)([" + nameStartChar + "][" + nameChar + "]*)", "g");
11 function Iter(cm, line, ch, range) {
12 this.line = line; this.ch = ch;
13 this.cm = cm; this.text = cm.getLine(line);
14 this.min = range ? range.from : cm.firstLine();
15 this.max = range ? range.to - 1 : cm.lastLine();
16 }
18 function tagAt(iter, ch) {
19 var type = iter.cm.getTokenTypeAt(Pos(iter.line, ch));
20 return type && /\btag\b/.test(type);
21 }
23 function nextLine(iter) {
24 if (iter.line >= iter.max) return;
25 iter.ch = 0;
26 iter.text = iter.cm.getLine(++iter.line);
27 return true;
28 }
29 function prevLine(iter) {
30 if (iter.line <= iter.min) return;
31 iter.text = iter.cm.getLine(--iter.line);
32 iter.ch = iter.text.length;
33 return true;
34 }
36 function toTagEnd(iter) {
37 for (;;) {
38 var gt = iter.text.indexOf(">", iter.ch);
39 if (gt == -1) { if (nextLine(iter)) continue; else return; }
40 if (!tagAt(iter, gt + 1)) { iter.ch = gt + 1; continue; }
41 var lastSlash = iter.text.lastIndexOf("/", gt);
42 var selfClose = lastSlash > -1 && !/\S/.test(iter.text.slice(lastSlash + 1, gt));
43 iter.ch = gt + 1;
44 return selfClose ? "selfClose" : "regular";
45 }
46 }
47 function toTagStart(iter) {
48 for (;;) {
49 var lt = iter.ch ? iter.text.lastIndexOf("<", iter.ch - 1) : -1;
50 if (lt == -1) { if (prevLine(iter)) continue; else return; }
51 if (!tagAt(iter, lt + 1)) { iter.ch = lt; continue; }
52 xmlTagStart.lastIndex = lt;
53 iter.ch = lt;
54 var match = xmlTagStart.exec(iter.text);
55 if (match && match.index == lt) return match;
56 }
57 }
59 function toNextTag(iter) {
60 for (;;) {
61 xmlTagStart.lastIndex = iter.ch;
62 var found = xmlTagStart.exec(iter.text);
63 if (!found) { if (nextLine(iter)) continue; else return; }
64 if (!tagAt(iter, found.index + 1)) { iter.ch = found.index + 1; continue; }
65 iter.ch = found.index + found[0].length;
66 return found;
67 }
68 }
69 function toPrevTag(iter) {
70 for (;;) {
71 var gt = iter.ch ? iter.text.lastIndexOf(">", iter.ch - 1) : -1;
72 if (gt == -1) { if (prevLine(iter)) continue; else return; }
73 if (!tagAt(iter, gt + 1)) { iter.ch = gt; continue; }
74 var lastSlash = iter.text.lastIndexOf("/", gt);
75 var selfClose = lastSlash > -1 && !/\S/.test(iter.text.slice(lastSlash + 1, gt));
76 iter.ch = gt + 1;
77 return selfClose ? "selfClose" : "regular";
78 }
79 }
81 function findMatchingClose(iter, tag) {
82 var stack = [];
83 for (;;) {
84 var next = toNextTag(iter), end, startLine = iter.line, startCh = iter.ch - (next ? next[0].length : 0);
85 if (!next || !(end = toTagEnd(iter))) return;
86 if (end == "selfClose") continue;
87 if (next[1]) { // closing tag
88 for (var i = stack.length - 1; i >= 0; --i) if (stack[i] == next[2]) {
89 stack.length = i;
90 break;
91 }
92 if (i < 0 && (!tag || tag == next[2])) return {
93 tag: next[2],
94 from: Pos(startLine, startCh),
95 to: Pos(iter.line, iter.ch)
96 };
97 } else { // opening tag
98 stack.push(next[2]);
99 }
100 }
101 }
102 function findMatchingOpen(iter, tag) {
103 var stack = [];
104 for (;;) {
105 var prev = toPrevTag(iter);
106 if (!prev) return;
107 if (prev == "selfClose") { toTagStart(iter); continue; }
108 var endLine = iter.line, endCh = iter.ch;
109 var start = toTagStart(iter);
110 if (!start) return;
111 if (start[1]) { // closing tag
112 stack.push(start[2]);
113 } else { // opening tag
114 for (var i = stack.length - 1; i >= 0; --i) if (stack[i] == start[2]) {
115 stack.length = i;
116 break;
117 }
118 if (i < 0 && (!tag || tag == start[2])) return {
119 tag: start[2],
120 from: Pos(iter.line, iter.ch),
121 to: Pos(endLine, endCh)
122 };
123 }
124 }
125 }
127 CodeMirror.registerHelper("fold", "xml", function(cm, start) {
128 var iter = new Iter(cm, start.line, 0);
129 for (;;) {
130 var openTag = toNextTag(iter), end;
131 if (!openTag || iter.line != start.line || !(end = toTagEnd(iter))) return;
132 if (!openTag[1] && end != "selfClose") {
133 var start = Pos(iter.line, iter.ch);
134 var close = findMatchingClose(iter, openTag[2]);
135 return close && {from: start, to: close.from};
136 }
137 }
138 });
139 CodeMirror.tagRangeFinder = CodeMirror.fold.xml; // deprecated
141 CodeMirror.findMatchingTag = function(cm, pos, range) {
142 var iter = new Iter(cm, pos.line, pos.ch, range);
143 if (iter.text.indexOf(">") == -1 && iter.text.indexOf("<") == -1) return;
144 var end = toTagEnd(iter), to = end && Pos(iter.line, iter.ch);
145 var start = end && toTagStart(iter);
146 if (!end || end == "selfClose" || !start || cmp(iter, pos) > 0) return;
147 var here = {from: Pos(iter.line, iter.ch), to: to, tag: start[2]};
149 if (start[1]) { // closing tag
150 return {open: findMatchingOpen(iter, start[2]), close: here, at: "close"};
151 } else { // opening tag
152 iter = new Iter(cm, to.line, to.ch, range);
153 return {open: here, close: findMatchingClose(iter, start[2]), at: "open"};
154 }
155 };
157 CodeMirror.findEnclosingTag = function(cm, pos, range) {
158 var iter = new Iter(cm, pos.line, pos.ch, range);
159 for (;;) {
160 var open = findMatchingOpen(iter);
161 if (!open) break;
162 var forward = new Iter(cm, pos.line, pos.ch, range);
163 var close = findMatchingClose(forward, open.tag);
164 if (close) return {open: open, close: close};
165 }
166 };
168 // Used by addon/edit/closetag.js
169 CodeMirror.scanForClosingTag = function(cm, pos, name, end) {
170 var iter = new Iter(cm, pos.line, pos.ch, end ? {from: 0, to: end} : null);
171 return !!findMatchingClose(iter, name);
172 };
173 })();
