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

changeset 0
6474c204b198
equal deleted inserted replaced
-1:000000000000 0:4d5dcf4c4dc1
1 CodeMirror.registerHelper("fold", "brace", function(cm, start) {
2 var line = start.line, lineText = cm.getLine(line);
3 var startCh, tokenType;
4
5 function findOpening(openCh) {
6 for (var at = start.ch, pass = 0;;) {
7 var found = at <= 0 ? -1 : lineText.lastIndexOf(openCh, at - 1);
8 if (found == -1) {
9 if (pass == 1) break;
10 pass = 1;
11 at = lineText.length;
12 continue;
13 }
14 if (pass == 1 && found < start.ch) break;
15 tokenType = cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1));
16 if (!/^(comment|string)/.test(tokenType)) return found + 1;
17 at = found - 1;
18 }
19 }
20
21 var startToken = "{", endToken = "}", startCh = findOpening("{");
22 if (startCh == null) {
23 startToken = "[", endToken = "]";
24 startCh = findOpening("[");
25 }
26
27 if (startCh == null) return;
28 var count = 1, lastLine = cm.lastLine(), end, endCh;
29 outer: for (var i = line; i <= lastLine; ++i) {
30 var text = cm.getLine(i), pos = i == line ? startCh : 0;
31 for (;;) {
32 var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos);
33 if (nextOpen < 0) nextOpen = text.length;
34 if (nextClose < 0) nextClose = text.length;
35 pos = Math.min(nextOpen, nextClose);
36 if (pos == text.length) break;
37 if (cm.getTokenTypeAt(CodeMirror.Pos(i, pos + 1)) == tokenType) {
38 if (pos == nextOpen) ++count;
39 else if (!--count) { end = i; endCh = pos; break outer; }
40 }
41 ++pos;
42 }
43 }
44 if (end == null || line == end && endCh == startCh) return;
45 return {from: CodeMirror.Pos(line, startCh),
46 to: CodeMirror.Pos(end, endCh)};
47 });
48 CodeMirror.braceRangeFinder = CodeMirror.fold.brace; // deprecated
49
50 CodeMirror.registerHelper("fold", "import", function(cm, start) {
51 function hasImport(line) {
52 if (line < cm.firstLine() || line > cm.lastLine()) return null;
53 var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
54 if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
55 if (start.type != "keyword" || start.string != "import") return null;
56 // Now find closing semicolon, return its position
57 for (var i = line, e = Math.min(cm.lastLine(), line + 10); i <= e; ++i) {
58 var text = cm.getLine(i), semi = text.indexOf(";");
59 if (semi != -1) return {startCh: start.end, end: CodeMirror.Pos(i, semi)};
60 }
61 }
62
63 var start = start.line, has = hasImport(start), prev;
64 if (!has || hasImport(start - 1) || ((prev = hasImport(start - 2)) && prev.end.line == start - 1))
65 return null;
66 for (var end = has.end;;) {
67 var next = hasImport(end.line + 1);
68 if (next == null) break;
69 end = next.end;
70 }
71 return {from: cm.clipPos(CodeMirror.Pos(start, has.startCh + 1)), to: end};
72 });
73 CodeMirror.importRangeFinder = CodeMirror.fold["import"]; // deprecated
74
75 CodeMirror.registerHelper("fold", "include", function(cm, start) {
76 function hasInclude(line) {
77 if (line < cm.firstLine() || line > cm.lastLine()) return null;
78 var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
79 if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
80 if (start.type == "meta" && start.string.slice(0, 8) == "#include") return start.start + 8;
81 }
82
83 var start = start.line, has = hasInclude(start);
84 if (has == null || hasInclude(start - 1) != null) return null;
85 for (var end = start;;) {
86 var next = hasInclude(end + 1);
87 if (next == null) break;
88 ++end;
89 }
90 return {from: CodeMirror.Pos(start, has + 1),
91 to: cm.clipPos(CodeMirror.Pos(end))};
92 });
93 CodeMirror.includeRangeFinder = CodeMirror.fold.include; // deprecated

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