/* ***** BEGIN LICENSE BLOCK *****
 * Distributed under the BSD license:
 *
 * Copyright (c) 2010, Ajax.org B.V.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Ajax.org B.V. nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * ***** END LICENSE BLOCK ***** */
/*
 * TODO: python delimiters
 */

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

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

    var PythonHighlightRules = function () {

        var keywords = (
            "and|as|assert|break|class|continue|def|del|elif|else|except|exec|" +
            "finally|for|from|global|if|import|in|is|lambda|not|or|pass|print|" +
            "raise|return|try|while|with|yield"
        );

        var builtinConstants = (
            "True|False|None|NotImplemented|Ellipsis|__debug__"
        );

        var builtinFunctions = (
            "abs|divmod|input|open|staticmethod|all|enumerate|int|ord|str|any|" +
            "eval|isinstance|pow|sum|basestring|execfile|issubclass|print|super|" +
            "binfile|iter|property|tuple|bool|filter|len|range|type|bytearray|" +
            "float|list|raw_input|unichr|callable|format|locals|reduce|unicode|" +
            "chr|frozenset|long|reload|vars|classmethod|getattr|map|repr|xrange|" +
            "cmp|globals|max|reversed|zip|compile|hasattr|memoryview|round|" +
            "__import__|complex|hash|min|set|apply|delattr|help|next|setattr|" +
            "buffer|dict|hex|object|slice|coerce|dir|id|oct|sorted|intern"
        );

        //var futureReserved = "";
        var keywordMapper = this.createKeywordMapper({
            "invalid.deprecated": "debugger",
            "support.function": builtinFunctions,
            //"invalid.illegal": futureReserved,
            "constant.language": builtinConstants,
            "keyword": keywords
        }, "identifier");

        var strPre = "(?:r|u|ur|R|U|UR|Ur|uR)?";

        var decimalInteger = "(?:(?:[1-9]\\d*)|(?:0))";
        var octInteger = "(?:0[oO]?[0-7]+)";
        var hexInteger = "(?:0[xX][\\dA-Fa-f]+)";
        var binInteger = "(?:0[bB][01]+)";
        var integer = "(?:" + decimalInteger + "|" + octInteger + "|" + hexInteger + "|" + binInteger + ")";

        var exponent = "(?:[eE][+-]?\\d+)";
        var fraction = "(?:\\.\\d+)";
        var intPart = "(?:\\d+)";
        var pointFloat = "(?:(?:" + intPart + "?" + fraction + ")|(?:" + intPart + "\\.))";
        var exponentFloat = "(?:(?:" + pointFloat + "|" + intPart + ")" + exponent + ")";
        var floatNumber = "(?:" + exponentFloat + "|" + pointFloat + ")";

        var stringEscape = "\\\\(x[0-9A-Fa-f]{2}|[0-7]{3}|[\\\\abfnrtv'\"]|U[0-9A-Fa-f]{8}|u[0-9A-Fa-f]{4})";

        this.$rules = {
            "start": [{
                token: "comment",
                regex: "#.*$"
            }, {
                token: "string",           // multi line """ string start
                regex: strPre + '"{3}',
                next: "qqstring3"
            }, {
                token: "string",           // " string
                regex: strPre + '"(?=.)',
                next: "qqstring"
            }, {
                token: "string",           // multi line ''' string start
                regex: strPre + "'{3}",
                next: "qstring3"
            }, {
                token: "string",           // ' string
                regex: strPre + "'(?=.)",
                next: "qstring"
            }, {
                token: "constant.numeric", // imaginary
                regex: "(?:" + floatNumber + "|\\d+)[jJ]\\b"
            }, {
                token: "constant.numeric", // float
                regex: floatNumber
            }, {
                token: "constant.numeric", // long integer
                regex: integer + "[lL]\\b"
            }, {
                token: "constant.numeric", // integer
                regex: integer + "\\b"
            }, {
                token: keywordMapper,
                regex: "[a-zA-Z_$][a-zA-Z0-9_$]*\\b"
            }, {
                token: "keyword.operator",
                regex: "\\+|\\-|\\*|\\*\\*|\\/|\\/\\/|%|<<|>>|&|\\||\\^|~|<|>|<=|=>|==|!=|<>|="
            }, {
                token: "paren.lparen",
                regex: "[\\[\\(\\{]"
            }, {
                token: "paren.rparen",
                regex: "[\\]\\)\\}]"
            }, {
                token: "text",
                regex: "\\s+"
            }],
            "qqstring3": [{
                token: "constant.language.escape",
                regex: stringEscape
            }, {
                token: "string", // multi line """ string end
                regex: '"{3}',
                next: "start"
            }, {
                defaultToken: "string"
            }],
            "qstring3": [{
                token: "constant.language.escape",
                regex: stringEscape
            }, {
                token: "string",  // multi line ''' string end
                regex: "'{3}",
                next: "start"
            }, {
                defaultToken: "string"
            }],
            "qqstring": [{
                token: "constant.language.escape",
                regex: stringEscape
            }, {
                token: "string",
                regex: "\\\\$",
                next: "qqstring"
            }, {
                token: "string",
                regex: '"|$',
                next: "start"
            }, {
                defaultToken: "string"
            }],
            "qstring": [{
                token: "constant.language.escape",
                regex: stringEscape
            }, {
                token: "string",
                regex: "\\\\$",
                next: "qstring"
            }, {
                token: "string",
                regex: "'|$",
                next: "start"
            }, {
                defaultToken: "string"
            }]
        };
    };

    oop.inherits(PythonHighlightRules, TextHighlightRules);

    exports.PythonHighlightRules = PythonHighlightRules;
});
