122 lines
5.2 KiB
JavaScript
122 lines
5.2 KiB
JavaScript
// CodeMirror, copyright (c) by Marijn Haverbeke and others
|
|
// Distributed under an MIT license: http://codemirror.net/LICENSE
|
|
|
|
(function(mod) {
|
|
if (typeof exports == "object" && typeof module == "object") // CommonJS
|
|
mod(require("../../lib/codemirror"));
|
|
else if (typeof define == "function" && define.amd) // AMD
|
|
define(["../../lib/codemirror"], mod);
|
|
else // Plain browser env
|
|
mod(CodeMirror);
|
|
})(function(CodeMirror) {
|
|
var ie_lt8 = /MSIE \d/.test(navigator.userAgent) &&
|
|
(document.documentMode == null || document.documentMode < 8);
|
|
|
|
var Pos = CodeMirror.Pos;
|
|
|
|
var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"};
|
|
|
|
function findMatchingBracket(cm, where, strict, config) {
|
|
var line = cm.getLineHandle(where.line), pos = where.ch - 1;
|
|
var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)];
|
|
if (!match) return null;
|
|
var dir = match.charAt(1) == ">" ? 1 : -1;
|
|
if (strict && (dir > 0) != (pos == where.ch)) return null;
|
|
var style = cm.getTokenTypeAt(Pos(where.line, pos + 1));
|
|
|
|
var found = scanForBracket(cm, Pos(where.line, pos + (dir > 0 ? 1 : 0)), dir, style || null, config);
|
|
if (found == null) return null;
|
|
return {from: Pos(where.line, pos), to: found && found.pos,
|
|
match: found && found.ch == match.charAt(0), forward: dir > 0};
|
|
}
|
|
|
|
// bracketRegex is used to specify which type of bracket to scan
|
|
// should be a regexp, e.g. /[[\]]/
|
|
//
|
|
// Note: If "where" is on an open bracket, then this bracket is ignored.
|
|
//
|
|
// Returns false when no bracket was found, null when it reached
|
|
// maxScanLines and gave up
|
|
function scanForBracket(cm, where, dir, style, config) {
|
|
var maxScanLen = (config && config.maxScanLineLength) || 10000;
|
|
var maxScanLines = (config && config.maxScanLines) || 1000;
|
|
|
|
var stack = [];
|
|
var re = config && config.bracketRegex ? config.bracketRegex : /[(){}[\]]/;
|
|
var lineEnd = dir > 0 ? Math.min(where.line + maxScanLines, cm.lastLine() + 1)
|
|
: Math.max(cm.firstLine() - 1, where.line - maxScanLines);
|
|
for (var lineNo = where.line; lineNo != lineEnd; lineNo += dir) {
|
|
var line = cm.getLine(lineNo);
|
|
if (!line) continue;
|
|
var pos = dir > 0 ? 0 : line.length - 1, end = dir > 0 ? line.length : -1;
|
|
if (line.length > maxScanLen) continue;
|
|
if (lineNo == where.line) pos = where.ch - (dir < 0 ? 1 : 0);
|
|
for (; pos != end; pos += dir) {
|
|
var ch = line.charAt(pos);
|
|
if (re.test(ch) && (style === undefined || cm.getTokenTypeAt(Pos(lineNo, pos + 1)) == style)) {
|
|
var match = matching[ch];
|
|
if ((match.charAt(1) == ">") == (dir > 0)) stack.push(ch);
|
|
else if (!stack.length) return {pos: Pos(lineNo, pos), ch: ch};
|
|
else stack.pop();
|
|
}
|
|
}
|
|
}
|
|
return lineNo - dir == (dir > 0 ? cm.lastLine() : cm.firstLine()) ? false : null;
|
|
}
|
|
|
|
function matchBrackets(cm, autoclear, config) {
|
|
// Disable brace matching in long lines, since it'll cause hugely slow updates
|
|
var maxHighlightLen = cm.state.matchBrackets.maxHighlightLineLength || 1000;
|
|
var marks = [], ranges = cm.listSelections();
|
|
for (var i = 0; i < ranges.length; i++) {
|
|
var match = ranges[i].empty() && findMatchingBracket(cm, ranges[i].head, false, config);
|
|
if (match && cm.getLine(match.from.line).length <= maxHighlightLen) {
|
|
var style = match.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
|
|
marks.push(cm.markText(match.from, Pos(match.from.line, match.from.ch + 1), {className: style}));
|
|
if (match.to && cm.getLine(match.to.line).length <= maxHighlightLen)
|
|
marks.push(cm.markText(match.to, Pos(match.to.line, match.to.ch + 1), {className: style}));
|
|
}
|
|
}
|
|
|
|
if (marks.length) {
|
|
// Kludge to work around the IE bug from issue #1193, where text
|
|
// input stops going to the textare whever this fires.
|
|
if (ie_lt8 && cm.state.focused) cm.focus();
|
|
|
|
var clear = function() {
|
|
cm.operation(function() {
|
|
for (var i = 0; i < marks.length; i++) marks[i].clear();
|
|
});
|
|
};
|
|
if (autoclear) setTimeout(clear, 800);
|
|
else return clear;
|
|
}
|
|
}
|
|
|
|
var currentlyHighlighted = null;
|
|
function doMatchBrackets(cm) {
|
|
cm.operation(function() {
|
|
if (currentlyHighlighted) {currentlyHighlighted(); currentlyHighlighted = null;}
|
|
currentlyHighlighted = matchBrackets(cm, false, cm.state.matchBrackets);
|
|
});
|
|
}
|
|
|
|
CodeMirror.defineOption("matchBrackets", false, function(cm, val, old) {
|
|
if (old && old != CodeMirror.Init) {
|
|
cm.off("cursorActivity", doMatchBrackets);
|
|
if (currentlyHighlighted) {currentlyHighlighted(); currentlyHighlighted = null;}
|
|
}
|
|
if (val) {
|
|
cm.state.matchBrackets = typeof val == "object" ? val : {};
|
|
cm.on("cursorActivity", doMatchBrackets);
|
|
}
|
|
});
|
|
|
|
CodeMirror.defineExtension("matchBrackets", function() {matchBrackets(this, true);});
|
|
CodeMirror.defineExtension("findMatchingBracket", function(pos, strict, config){
|
|
return findMatchingBracket(this, pos, strict, config);
|
|
});
|
|
CodeMirror.defineExtension("scanForBracket", function(pos, dir, style, config){
|
|
return scanForBracket(this, pos, dir, style, config);
|
|
});
|
|
});
|