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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 defaults = { pairs: "()[]{}''\"\"", closeBefore: ")]}'\":;>", triples: "", explode: "[]{}" }; var Pos = CodeMirror.Pos; CodeMirror.defineOption("autoCloseBrackets", false, function(cm, val, old) { if (old && old != CodeMirror.Init) { cm.removeKeyMap(keyMap); cm.state.closeBrackets = null; } if (val) { ensureBound(getOption(val, "pairs")) cm.state.closeBrackets = val; cm.addKeyMap(keyMap); } }); function getOption(conf, name) { if (name == "pairs" && typeof conf == "string") return conf; if (typeof conf == "object" && conf[name] != null) return conf[name]; return defaults[name]; } var keyMap = {Backspace: handleBackspace, Enter: handleEnter}; function ensureBound(chars) { for (var i = 0; i < chars.length; i++) { var ch = chars.charAt(i), key = "'" + ch + "'" if (!keyMap[key]) keyMap[key] = handler(ch) } } ensureBound(defaults.pairs + "`") function handler(ch) { return function(cm) { return handleChar(cm, ch); }; } function getConfig(cm) { var deflt = cm.state.closeBrackets; if (!deflt || deflt.override) return deflt; var mode = cm.getModeAt(cm.getCursor()); return mode.closeBrackets || deflt; } function handleBackspace(cm) { var conf = getConfig(cm); if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass; var pairs = getOption(conf, "pairs"); var ranges = cm.listSelections(); for (var i = 0; i < ranges.length; i++) { if (!ranges[i].empty()) return CodeMirror.Pass; var around = charsAround(cm, ranges[i].head); if (!around || pairs.indexOf(around) % 2 != 0) return CodeMirror.Pass; } for (var i = ranges.length - 1; i >= 0; i--) { var cur = ranges[i].head; cm.replaceRange("", Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1), "+delete"); } } function handleEnter(cm) { var conf = getConfig(cm); var explode = conf && getOption(conf, "explode"); if (!explode || cm.getOption("disableInput")) return CodeMirror.Pass; var ranges = cm.listSelections(); for (var i = 0; i < ranges.length; i++) { if (!ranges[i].empty()) return CodeMirror.Pass; var around = charsAround(cm, ranges[i].head); if (!around || explode.indexOf(around) % 2 != 0) return CodeMirror.Pass; } cm.operation(function() { var linesep = cm.lineSeparator() || "\n"; cm.replaceSelection(linesep + linesep, null); moveSel(cm, -1) ranges = cm.listSelections(); for (var i = 0; i < ranges.length; i++) { var line = ranges[i].head.line; cm.indentLine(line, null, true); cm.indentLine(line + 1, null, true); } }); } function moveSel(cm, dir) { var newRanges = [], ranges = cm.listSelections(), primary = 0 for (var i = 0; i < ranges.length; i++) { var range = ranges[i] if (range.head == cm.getCursor()) primary = i var pos = range.head.ch || dir > 0 ? {line: range.head.line, ch: range.head.ch + dir} : {line: range.head.line - 1} newRanges.push({anchor: pos, head: pos}) } cm.setSelections(newRanges, primary) } function contractSelection(sel) { var inverted = CodeMirror.cmpPos(sel.anchor, sel.head) > 0; return {anchor: new Pos(sel.anchor.line, sel.anchor.ch + (inverted ? -1 : 1)), head: new Pos(sel.head.line, sel.head.ch + (inverted ? 1 : -1))}; } function handleChar(cm, ch) { var conf = getConfig(cm); if (!conf || cm.getOption("disableInput")) return CodeMirror.Pass; var pairs = getOption(conf, "pairs"); var pos = pairs.indexOf(ch); if (pos == -1) return CodeMirror.Pass; var closeBefore = getOption(conf,"closeBefore"); var triples = getOption(conf, "triples"); var identical = pairs.charAt(pos + 1) == ch; var ranges = cm.listSelections(); var opening = pos % 2 == 0; var type; for (var i = 0; i < ranges.length; i++) { var range = ranges[i], cur = range.head, curType; var next = cm.getRange(cur, Pos(cur.line, cur.ch + 1)); if (opening && !range.empty()) { curType = "surround"; } else if ((identical || !opening) && next == ch) { if (identical && stringStartsAfter(cm, cur)) curType = "both"; else if (triples.indexOf(ch) >= 0 && cm.getRange(cur, Pos(cur.line, cur.ch + 3)) == ch + ch + ch) curType = "skipThree"; else curType = "skip"; } else if (identical && cur.ch > 1 && triples.indexOf(ch) >= 0 && cm.getRange(Pos(cur.line, cur.ch - 2), cur) == ch + ch) { if (cur.ch > 2 && /\bstring/.test(cm.getTokenTypeAt(Pos(cur.line, cur.ch - 2)))) return CodeMirror.Pass; curType = "addFour"; } else if (identical) { var prev = cur.ch == 0 ? " " : cm.getRange(Pos(cur.line, cur.ch - 1), cur) if (!CodeMirror.isWordChar(next) && prev != ch && !CodeMirror.isWordChar(prev)) curType = "both"; else return CodeMirror.Pass; } else if (opening && (next.length === 0 || /\s/.test(next) || closeBefore.indexOf(next) > -1)) { curType = "both"; } else { return CodeMirror.Pass; } if (!type) type = curType; else if (type != curType) return CodeMirror.Pass; } var left = pos % 2 ? pairs.charAt(pos - 1) : ch; var right = pos % 2 ? ch : pairs.charAt(pos + 1); cm.operation(function() { if (type == "skip") { moveSel(cm, 1) } else if (type == "skipThree") { moveSel(cm, 3) } else if (type == "surround") { var sels = cm.getSelections(); for (var i = 0; i < sels.length; i++) sels[i] = left + sels[i] + right; cm.replaceSelections(sels, "around"); sels = cm.listSelections().slice(); for (var i = 0; i < sels.length; i++) sels[i] = contractSelection(sels[i]); cm.setSelections(sels); } else if (type == "both") { cm.replaceSelection(left + right, null); cm.triggerElectric(left + right); moveSel(cm, -1) } else if (type == "addFour") { cm.replaceSelection(left + left + left + left, "before"); moveSel(cm, 1) } }); } function charsAround(cm, pos) { var str = cm.getRange(Pos(pos.line, pos.ch - 1), Pos(pos.line, pos.ch + 1)); return str.length == 2 ? str : null; } function stringStartsAfter(cm, pos) { var token = cm.getTokenAt(Pos(pos.line, pos.ch + 1)) return /\bstring/.test(token.type) && token.start == pos.ch && (pos.ch == 0 || !/\bstring/.test(cm.getTokenTypeAt(pos))) } });