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 *       notice, this list of conditions and the following disclaimer.
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 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
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 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
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define(function (require, exports, module) {
    "use strict";

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

    var SwiftHighlightRules = function () {
        var keywordMapper = this.createKeywordMapper({
            "variable.language": "",
            "keyword": "__COLUMN__|__FILE__|__FUNCTION__|__LINE__"
            + "|as|associativity|break|case|class|continue|default|deinit|didSet"
            + "|do|dynamicType|else|enum|extension|fallthrough|for|func|get|if|import"
            + "|in|infix|init|inout|is|left|let|let|mutating|new|none|nonmutating"
            + "|operator|override|postfix|precedence|prefix|protocol|return|right"
            + "|safe|Self|self|set|struct|subscript|switch|Type|typealias"
            + "|unowned|unsafe|var|weak|where|while|willSet"
            + "|convenience|dynamic|final|infix|lazy|mutating|nonmutating|optional|override|postfix"
            + "|prefix|required|static|guard|defer",
            "storage.type": "bool|double|Double"
            + "|extension|float|Float|int|Int|private|public|string|String",
            "constant.language": "false|Infinity|NaN|nil|no|null|null|off|on|super|this|true|undefined|yes",
            "support.function": ""
        }, "identifier");

        function string(start, options) {
            var nestable = options.nestable || options.interpolation;
            var interpStart = options.interpolation && options.interpolation.nextState || "start";
            var mainRule = {
                regex: start + (options.multiline ? "" : "(?=.)"),
                token: "string.start"
            };
            var nextState = [
                options.escape && {
                    regex: options.escape,
                    token: "character.escape"
                },
                options.interpolation && {
                    token: "paren.quasi.start",
                    regex: lang.escapeRegExp(options.interpolation.lead + options.interpolation.open),
                    push: interpStart
                },
                options.error && {
                    regex: options.error,
                    token: "error.invalid"
                },
                {
                    regex: start + (options.multiline ? "" : "|$"),
                    token: "string.end",
                    next: nestable ? "pop" : "start"
                }, {
                    defaultToken: "string"
                }
            ].filter(Boolean);

            if (nestable)
                mainRule.push = nextState;
            else
                mainRule.next = nextState;

            if (!options.interpolation)
                return mainRule;

            var open = options.interpolation.open;
            var close = options.interpolation.close;
            var counter = {
                regex: "[" + lang.escapeRegExp(open + close) + "]",
                onMatch: function (val, state, stack) {
                    this.next = val == open ? this.nextState : "";
                    if (val == open && stack.length) {
                        stack.unshift("start", state);
                        return "paren";
                    }
                    if (val == close && stack.length) {
                        stack.shift();
                        this.next = stack.shift();
                        if (this.next.indexOf("string") != -1)
                            return "paren.quasi.end";
                    }
                    return val == open ? "paren.lparen" : "paren.rparen";
                },
                nextState: interpStart
            }
            return [counter, mainRule];
        }

        function comments() {
            return [{
                token: "comment",
                regex: "\\/\\/(?=.)",
                next: [
                    DocCommentHighlightRules.getTagRule(),
                    {token: "comment", regex: "$|^", next: "start"},
                    {defaultToken: "comment", caseInsensitive: true}
                ]
            },
                DocCommentHighlightRules.getStartRule("doc-start"),
                {
                    token: "comment.start",
                    regex: /\/\*/,
                    stateName: "nested_comment",
                    push: [
                        DocCommentHighlightRules.getTagRule(),
                        {token: "comment.start", regex: /\/\*/, push: "nested_comment"},
                        {token: "comment.end", regex: "\\*\\/", next: "pop"},
                        {defaultToken: "comment", caseInsensitive: true}
                    ]
                }
            ];
        }


        this.$rules = {
            start: [
                string('"', {
                    escape: /\\(?:[0\\tnr"']|u{[a-fA-F1-9]{0,8}})/,
                    interpolation: {lead: "\\", open: "(", close: ")"},
                    error: /\\./,
                    multiline: false
                }),
                comments({type: "c", nestable: true}),
                {
                    regex: /@[a-zA-Z_$][a-zA-Z_$\d\u0080-\ufffe]*/,
                    token: "variable.parameter"
                },
                {
                    regex: /[a-zA-Z_$][a-zA-Z_$\d\u0080-\ufffe]*/,
                    token: keywordMapper
                },
                {
                    token: "constant.numeric",
                    regex: /[+-]?(?:0(?:b[01]+|o[0-7]+|x[\da-fA-F])|\d+(?:(?:\.\d*)?(?:[PpEe][+-]?\d+)?)\b)/
                }, {
                    token: "keyword.operator",
                    regex: /--|\+\+|===|==|=|!=|!==|<=|>=|<<=|>>=|>>>=|<>|<|>|!|&&|\|\||\?:|[!$%&*+\-~\/^]=?/,
                    next: "start"
                }, {
                    token: "punctuation.operator",
                    regex: /[?:,;.]/,
                    next: "start"
                }, {
                    token: "paren.lparen",
                    regex: /[\[({]/,
                    next: "start"
                }, {
                    token: "paren.rparen",
                    regex: /[\])}]/
                }

            ]
        };
        this.embedRules(DocCommentHighlightRules, "doc-",
            [DocCommentHighlightRules.getEndRule("start")]);

        this.normalizeRules();
    };


    oop.inherits(SwiftHighlightRules, TextHighlightRules);

    exports.HighlightRules = SwiftHighlightRules;
});