91 lines
3.3 KiB
JavaScript
91 lines
3.3 KiB
JavaScript
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CodeMirror.braceRangeFinder = function(cm, start) {
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var line = start.line, lineText = cm.getLine(line);
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var startCh, tokenType;
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function findOpening(openCh) {
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for (var at = start.ch, pass = 0;;) {
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var found = lineText.lastIndexOf(openCh, at - 1);
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if (found == -1) {
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if (pass == 1) break;
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pass = 1;
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at = lineText.length;
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continue;
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}
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if (pass == 1 && found < start.ch) break;
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tokenType = cm.getTokenAt(CodeMirror.Pos(line, found + 1)).type;
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if (!/^(comment|string)/.test(tokenType)) return found + 1;
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at = found - 1;
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}
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}
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var startToken = "{", endToken = "}", startCh = findOpening("{");
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if (startCh == null) {
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startToken = "[", endToken = "]";
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startCh = findOpening("[");
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}
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if (startCh == null) return;
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var count = 1, lastLine = cm.lastLine(), end, endCh;
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outer: for (var i = line; i <= lastLine; ++i) {
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var text = cm.getLine(i), pos = i == line ? startCh : 0;
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for (;;) {
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var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos);
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if (nextOpen < 0) nextOpen = text.length;
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if (nextClose < 0) nextClose = text.length;
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pos = Math.min(nextOpen, nextClose);
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if (pos == text.length) break;
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if (cm.getTokenAt(CodeMirror.Pos(i, pos + 1)).type == tokenType) {
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if (pos == nextOpen) ++count;
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else if (!--count) { end = i; endCh = pos; break outer; }
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}
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++pos;
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}
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}
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if (end == null || line == end && endCh == startCh) return;
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return {from: CodeMirror.Pos(line, startCh),
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to: CodeMirror.Pos(end, endCh)};
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};
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CodeMirror.importRangeFinder = function(cm, start) {
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function hasImport(line) {
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if (line < cm.firstLine() || line > cm.lastLine()) return null;
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var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
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if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
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if (start.type != "keyword" || start.string != "import") return null;
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// Now find closing semicolon, return its position
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for (var i = line, e = Math.min(cm.lastLine(), line + 10); i <= e; ++i) {
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var text = cm.getLine(i), semi = text.indexOf(";");
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if (semi != -1) return {startCh: start.end, end: CodeMirror.Pos(i, semi)};
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}
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}
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var start = start.line, has = hasImport(start), prev;
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if (!has || hasImport(start - 1) || ((prev = hasImport(start - 2)) && prev.end.line == start - 1))
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return null;
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for (var end = has.end;;) {
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var next = hasImport(end.line + 1);
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if (next == null) break;
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end = next.end;
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}
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return {from: cm.clipPos(CodeMirror.Pos(start, has.startCh + 1)), to: end};
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};
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CodeMirror.includeRangeFinder = function(cm, start) {
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function hasInclude(line) {
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if (line < cm.firstLine() || line > cm.lastLine()) return null;
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var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
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if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
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if (start.type == "meta" && start.string.slice(0, 8) == "#include") return start.start + 8;
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}
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var start = start.line, has = hasInclude(start);
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if (has == null || hasInclude(start - 1) != null) return null;
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for (var end = start;;) {
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var next = hasInclude(end + 1);
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if (next == null) break;
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++end;
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}
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return {from: CodeMirror.Pos(start, has + 1),
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to: cm.clipPos(CodeMirror.Pos(end))};
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};
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