(function (mod){ 
if (typeof exports == "object" && typeof module == "object") mod(require("../../lib/codemirror")); 
 else if (typeof define == "function" && define.amd) define(["../../lib/codemirror"] , mod); 
 else 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}
; 
} 
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: _AN_Read_length("length", line) - 1, end = dir > 0? _AN_Read_length("length", line): -1; 
if (_AN_Read_length("length", line) > 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 (!_AN_Read_length("length", stack)) 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){ 
var maxHighlightLen = cm.state.matchBrackets.maxHighlightLineLength || 1000; 
var marks = [] , ranges = cm.listSelections(); 
for (var i = 0; 
i < _AN_Read_length("length", ranges); i++ ){ 
var match = ranges[i].empty() && findMatchingBracket(cm, ranges[i].head, false , config); 
if (match && _AN_Read_length("length", cm.getLine(match.from.line)) <= 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 && _AN_Read_length("length", cm.getLine(match.to.line)) <= maxHighlightLen) marks.push(cm.markText(match.to, Pos(match.to.line, match.to.ch + 1), { 
className: style}
)); 
} 
} 
if (marks.length) { 
if (ie_lt8 && cm.state.focused) cm.focus(); 
var clear = function (){ 
cm.operation(function (){ 
for (var i = 0; 
i < _AN_Read_length("length", marks); i++ )_AN_Call_clear("clear", marks[i]); 
} 
); 
} 
; 
if (autoclear) _AN_Call_settimeout("setTimeout", window, 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 (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); 
} 
); 
} 
);