overleaf/services/web/public/js/ace/mode/yaml_highlight_rules.js

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define(function(require, exports, module) {
"use strict";

var oop = require("../lib/oop");
var TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;

var YamlHighlightRules = function() {

    // regexp must not have capturing parentheses. Use (?:) instead.
    // regexps are ordered -> the first match is used
    this.$rules = {
        "start" : [
            {
                token : "comment",
                regex : "#.*$"
            }, {
                token : "list.markup",
                regex : /^(?:-{3}|\.{3})\s*(?=#|$)/     
            },  {
                token : "list.markup",
                regex : /^\s*[\-?](?:$|\s)/     
            }, {
                token: "constant",
                regex: "!![\\w//]+"
            }, {
                token: "constant.language",
                regex: "[&\\*][a-zA-Z0-9-_]+"
            }, {
                token: ["meta.tag", "keyword"],
                regex: /^(\s*\w.*?)(\:(?:\s+|$))/
            },{
                token: ["meta.tag", "keyword"],
                regex: /(\w+?)(\s*\:(?:\s+|$))/
            }, {
                token : "keyword.operator",
                regex : "<<\\w*:\\w*"
            }, {
                token : "keyword.operator",
                regex : "-\\s*(?=[{])"
            }, {
                token : "string", // single line
                regex : '["](?:(?:\\\\.)|(?:[^"\\\\]))*?["]'
            }, {
                token : "string", // multi line string start
                regex : '[|>][-+\\d\\s]*$',
                next : "qqstring"
            }, {
                token : "string", // single quoted string
                regex : "['](?:(?:\\\\.)|(?:[^'\\\\]))*?[']"
            }, {
                token : "constant.numeric", // float
                regex : /[+\-]?[\d_]+(?:(?:\.[\d_]*)?(?:[eE][+\-]?[\d_]+)?)?\b/
            }, {
                token : "constant.numeric", // other number
                regex : /[+\-]?\.inf\b|NaN\b|0x[\dA-Fa-f_]+|0b[10_]+/
            }, {
                token : "constant.language.boolean",
                regex : "(?:true|false|TRUE|FALSE|True|False|yes|no)\\b"
            }, {
                token : "invalid.illegal", // comments are not allowed
                regex : "\\/\\/.*$"
            }, {
                token : "paren.lparen",
                regex : "[[({]"
            }, {
                token : "paren.rparen",
                regex : "[\\])}]"
            }
        ],
        "qqstring" : [
            {
                token : "string",
                regex : '(?=(?:(?:\\\\.)|(?:[^:]))*?:)',
                next : "start"
            }, {
                token : "string",
                regex : '.+'
            }
        ]};

};

oop.inherits(YamlHighlightRules, TextHighlightRules);

exports.YamlHighlightRules = YamlHighlightRules;
});