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 * Distributed under the BSD license:
 *
 * Copyright (c) 2010, Ajax.org B.V.
 * All rights reserved.
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 * 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.
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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.
 * 
 * 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
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define(function (require, exports, module) {
    "use strict";

    var oop = require("../lib/oop");
    var c_cppHighlightRules = require("./c_cpp_highlight_rules").c_cppHighlightRules;

    var glslHighlightRules = function () {

        var keywords = (
            "attribute|const|uniform|varying|break|continue|do|for|while|" +
            "if|else|in|out|inout|float|int|void|bool|true|false|" +
            "lowp|mediump|highp|precision|invariant|discard|return|mat2|mat3|" +
            "mat4|vec2|vec3|vec4|ivec2|ivec3|ivec4|bvec2|bvec3|bvec4|sampler2D|" +
            "samplerCube|struct"
        );

        var buildinConstants = (
            "radians|degrees|sin|cos|tan|asin|acos|atan|pow|" +
            "exp|log|exp2|log2|sqrt|inversesqrt|abs|sign|floor|ceil|fract|mod|" +
            "min|max|clamp|mix|step|smoothstep|length|distance|dot|cross|" +
            "normalize|faceforward|reflect|refract|matrixCompMult|lessThan|" +
            "lessThanEqual|greaterThan|greaterThanEqual|equal|notEqual|any|all|" +
            "not|dFdx|dFdy|fwidth|texture2D|texture2DProj|texture2DLod|" +
            "texture2DProjLod|textureCube|textureCubeLod|" +
            "gl_MaxVertexAttribs|gl_MaxVertexUniformVectors|gl_MaxVaryingVectors|" +
            "gl_MaxVertexTextureImageUnits|gl_MaxCombinedTextureImageUnits|" +
            "gl_MaxTextureImageUnits|gl_MaxFragmentUniformVectors|gl_MaxDrawBuffers|" +
            "gl_DepthRangeParameters|gl_DepthRange|" +
            // The following two are only for MIME x-shader/x-vertex.
            "gl_Position|gl_PointSize|" +
            // The following five are only for MIME x-shader/x-fragment.
            "gl_FragCoord|gl_FrontFacing|gl_PointCoord|gl_FragColor|gl_FragData"
        );

        var keywordMapper = this.createKeywordMapper({
            "variable.language": "this",
            "keyword": keywords,
            "constant.language": buildinConstants
        }, "identifier");

        this.$rules = new c_cppHighlightRules().$rules;
        this.$rules.start.forEach(function (rule) {
            if (typeof rule.token == "function")
                rule.token = keywordMapper;
        })
    };

    oop.inherits(glslHighlightRules, c_cppHighlightRules);

    exports.glslHighlightRules = glslHighlightRules;
});
