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// CodeMirror, copyright (c) by Marijn Haverbeke and others // Distributed under an MIT license: https://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 bracketRegex(config) { return config && config.bracketRegex || /[(){}[\]]/ } function findMatchingBracket(cm, where, config) { var line = cm.getLineHandle(where.line), pos = where.ch - 1; var afterCursor = config && config.afterCursor if (afterCursor == null) afterCursor = /(^| )cm-fat-cursor($| )/.test(cm.getWrapperElement().className) var re = bracketRegex(config) // A cursor is defined as between two characters, but in in vim command mode // (i.e. not insert mode), the cursor is visually represented as a // highlighted box on top of the 2nd character. Otherwise, we allow matches // from before or after the cursor. var match = (!afterCursor && pos >= 0 && re.test(line.text.charAt(pos)) && matching[line.text.charAt(pos)]) || re.test(line.text.charAt(pos + 1)) && matching[line.text.charAt(++pos)]; if (!match) return null; var dir = match.charAt(1) == ">" ? 1 : -1; if (config && config.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, 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 = bracketRegex(config) 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 && (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, highlightNonMatching = config && config.highlightNonMatching; var marks = [], ranges = cm.listSelections(); for (var i = 0; i < ranges.length; i++) { var match = ranges[i].empty() && findMatchingBracket(cm, ranges[i].head, config); if (match && (match.match || highlightNonMatching !== false) && 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 textarea whenever 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; } } function doMatchBrackets(cm) { cm.operation(function() { if (cm.state.matchBrackets.currentlyHighlighted) { cm.state.matchBrackets.currentlyHighlighted(); cm.state.matchBrackets.currentlyHighlighted = null; } cm.state.matchBrackets.currentlyHighlighted = matchBrackets(cm, false, cm.state.matchBrackets); }); } function clearHighlighted(cm) { if (cm.state.matchBrackets && cm.state.matchBrackets.currentlyHighlighted) { cm.state.matchBrackets.currentlyHighlighted(); cm.state.matchBrackets.currentlyHighlighted = null; } } CodeMirror.defineOption("matchBrackets", false, function(cm, val, old) { if (old && old != CodeMirror.Init) { cm.off("cursorActivity", doMatchBrackets); cm.off("focus", doMatchBrackets) cm.off("blur", clearHighlighted) clearHighlighted(cm); } if (val) { cm.state.matchBrackets = typeof val == "object" ? val : {}; cm.on("cursorActivity", doMatchBrackets); cm.on("focus", doMatchBrackets) cm.on("blur", clearHighlighted) } }); CodeMirror.defineExtension("matchBrackets", function() {matchBrackets(this, true);}); CodeMirror.defineExtension("findMatchingBracket", function(pos, config, oldConfig){ // Backwards-compatibility kludge if (oldConfig || typeof config == "boolean") { if (!oldConfig) { config = config ? {strict: true} : null } else { oldConfig.strict = config config = oldConfig } } return findMatchingBracket(this, pos, config) }); CodeMirror.defineExtension("scanForBracket", function(pos, dir, style, config){ return scanForBracket(this, pos, dir, style, config); }); });