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// CodeMirror, copyright (c) by Marijn Haverbeke and others

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// Distributed under an MIT license: http://codemirror.net/LICENSE

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(function(mod) {

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if (typeof exports == "object" && typeof module == "object") // CommonJS

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mod(require("../../lib/codemirror"));

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else if (typeof define == "function" && define.amd) // AMD

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define(["../../lib/codemirror"], mod);

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else // Plain browser env

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mod(CodeMirror);

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})(function(CodeMirror) {

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"use strict";

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CodeMirror.defineMode("yaml", function() {

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var cons = ['true', 'false', 'on', 'off', 'yes', 'no'];

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var keywordRegex = new RegExp("\\b(("+cons.join(")|(")+"))$", 'i');

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return {

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token: function(stream, state) {

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var ch = stream.peek();

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var esc = state.escaped;

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state.escaped = false;

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/* comments */

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if (ch == "#" && (stream.pos == 0 || /\s/.test(stream.string.charAt(stream.pos - 1)))) {

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stream.skipToEnd();

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return "comment";

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}

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if (stream.match(/^('([^']|\\.)*'?|"([^"]|\\.)*"?)/))

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return "string";

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if (state.literal && stream.indentation() > state.keyCol) {

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stream.skipToEnd(); return "string";

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} else if (state.literal) { state.literal = false; }

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if (stream.sol()) {

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state.keyCol = 0;

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state.pair = false;

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state.pairStart = false;

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/* document start */

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if(stream.match(/---/)) { return "def"; }

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/* document end */

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if (stream.match(/\.\.\./)) { return "def"; }

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/* array list item */

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if (stream.match(/\s*-\s+/)) { return 'meta'; }

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}

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/* inline pairs/lists */

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if (stream.match(/^(\{|\}|\[|\])/)) {

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if (ch == '{')

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state.inlinePairs++;

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else if (ch == '}')

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state.inlinePairs--;

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else if (ch == '[')

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state.inlineList++;

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else

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state.inlineList--;

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return 'meta';

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}

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/* list seperator */

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if (state.inlineList > 0 && !esc && ch == ',') {

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stream.next();

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return 'meta';

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}

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/* pairs seperator */

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if (state.inlinePairs > 0 && !esc && ch == ',') {

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state.keyCol = 0;

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state.pair = false;

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state.pairStart = false;

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stream.next();

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return 'meta';

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}

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/* start of value of a pair */

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if (state.pairStart) {

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/* block literals */

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if (stream.match(/^\s*(\||\>)\s*/)) { state.literal = true; return 'meta'; };

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/* references */

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if (stream.match(/^\s*(\&|\*)[a-z0-9\._-]+\b/i)) { return 'variable-2'; }

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/* numbers */

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if (state.inlinePairs == 0 && stream.match(/^\s*-?[0-9\.\,]+\s?$/)) { return 'number'; }

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if (state.inlinePairs > 0 && stream.match(/^\s*-?[0-9\.\,]+\s?(?=(,|}))/)) { return 'number'; }

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/* keywords */

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if (stream.match(keywordRegex)) { return 'keyword'; }

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}

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/* pairs (associative arrays) -> key */

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if (!state.pair && stream.match(/^\s*(?:[,\[\]{}&*!|>'"%@`][^\s'":]|[^,\[\]{}#&*!|>'"%@`])[^#]*?(?=\s*:($|\s))/)) {

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state.pair = true;

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state.keyCol = stream.indentation();

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return "atom";

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}

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if (state.pair && stream.match(/^:\s*/)) { state.pairStart = true; return 'meta'; }

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/* nothing found, continue */

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state.pairStart = false;

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state.escaped = (ch == '\\');

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stream.next();

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return null;

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startState: function() {

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return {

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pair: false,

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pairStart: false,

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keyCol: 0,

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inlinePairs: 0,

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inlineList: 0,

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literal: false,

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escaped: false

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};

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}

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};

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});

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CodeMirror.defineMIME("text/x-yaml", "yaml");

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});

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