/* ***** BEGIN LICENSE BLOCK *****
 * Distributed under the BSD license:
 *
 * Copyright (c) 2012, 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;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * 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 ***** */

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

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

    var DHighlightRules = function () {

        var keywords = (
            "this|super|import|module|body|mixin|__traits|invariant|alias|asm|delete|" +
            "typeof|typeid|sizeof|cast|new|in|is|typedef|__vector|__parameters"
        );

        var keywordControls = (
            "break|case|continue|default|do|else|for|foreach|foreach_reverse|goto|if|" +
            "return|switch|while|catch|try|throw|finally|version|assert|unittest|with"
        );

        var types = (
            "auto|bool|char|dchar|wchar|byte|ubyte|float|double|real|" +
            "cfloat|creal|cdouble|cent|ifloat|ireal|idouble|" +
            "int|long|short|void|uint|ulong|ushort|ucent|" +
            "function|delegate|string|wstring|dstring|size_t|ptrdiff_t|hash_t|Object"
        );

        var modifiers = (
            "abstract|align|debug|deprecated|export|extern|const|final|in|inout|out|" +
            "ref|immutable|lazy|nothrow|override|package|pragma|private|protected|" +
            "public|pure|scope|shared|__gshared|synchronized|static|volatile"
        );

        var storages = (
            "class|struct|union|template|interface|enum|macro"
        );

        var stringEscapesSeq = {
            token: "constant.language.escape",
            regex: "\\\\(?:(?:x[0-9A-F]{2})|(?:[0-7]{1,3})|(?:['\"\\?0abfnrtv\\\\])|" +
            "(?:u[0-9a-fA-F]{4})|(?:U[0-9a-fA-F]{8}))"
        };

        var builtinConstants = (
            "null|true|false|" +
            "__DATE__|__EOF__|__TIME__|__TIMESTAMP__|__VENDOR__|__VERSION__|" +
            "__FILE__|__MODULE__|__LINE__|__FUNCTION__|__PRETTY_FUNCTION__"
        );

        var operators = (
            "/|/\\=|&|&\\=|&&|\\|\\|\\=|\\|\\||\\-|\\-\\=|\\-\\-|\\+|" +
            "\\+\\=|\\+\\+|\\<|\\<\\=|\\<\\<|\\<\\<\\=|\\<\\>|\\<\\>\\=|\\>|\\>\\=|\\>\\>\\=|" +
            "\\>\\>\\>\\=|\\>\\>|\\>\\>\\>|\\!|\\!\\=|\\!\\<\\>|\\!\\<\\>\\=|\\!\\<|\\!\\<\\=|" +
            "\\!\\>|\\!\\>\\=|\\?|\\$|\\=|\\=\\=|\\*|\\*\\=|%|%\\=|" +
            "\\^|\\^\\=|\\^\\^|\\^\\^\\=|~|~\\=|\\=\\>|#"
        );

        var keywordMapper = this.$keywords = this.createKeywordMapper({
            "keyword.modifier": modifiers,
            "keyword.control": keywordControls,
            "keyword.type": types,
            "keyword": keywords,
            "keyword.storage": storages,
            "punctation": "\\.|\\,|;|\\.\\.|\\.\\.\\.",
            "keyword.operator": operators,
            "constant.language": builtinConstants
        }, "identifier");

        var identifierRe = "[a-zA-Z_\u00a1-\uffff][a-zA-Z\\d_\u00a1-\uffff]*\\b";

        // regexp must not have capturing parentheses. Use (?:) instead.
        // regexps are ordered -> the first match is used

        this.$rules = {
            "start": [
                {     //-------------------------------------------------------- COMMENTS
                    token: "comment",
                    regex: "\\/\\/.*$"
                },
                DocCommentHighlightRules.getStartRule("doc-start"),
                {
                    token: "comment", // multi line comment
                    regex: "\\/\\*",
                    next: "star-comment"
                }, {
                    token: "comment.shebang",
                    regex: "^\\s*#!.*"
                }, {
                    token: "comment",
                    regex: "\\/\\+",
                    next: "plus-comment"
                }, {  //-------------------------------------------------------- STRINGS
                    onMatch: function (value, currentState, state) {
                        state.unshift(this.next, value.substr(2));
                        return "string";
                    },
                    regex: 'q"(?:[\\[\\(\\{\\<]+)',
                    next: 'operator-heredoc-string'
                }, {
                    onMatch: function (value, currentState, state) {
                        state.unshift(this.next, value.substr(2));
                        return "string";
                    },
                    regex: 'q"(?:[a-zA-Z_]+)$',
                    next: 'identifier-heredoc-string'
                }, {
                    token: "string", // multi line string start
                    regex: '[xr]?"',
                    next: "quote-string"
                }, {
                    token: "string", // multi line string start
                    regex: '[xr]?`',
                    next: "backtick-string"
                }, {
                    token: "string", // single line
                    regex: "[xr]?['](?:(?:\\\\.)|(?:[^'\\\\]))*?['][cdw]?"
                }, {  //-------------------------------------------------------- RULES
                    token: ["keyword", "text", "paren.lparen"],
                    regex: /(asm)(\s*)({)/,
                    next: "d-asm"
                }, {
                    token: ["keyword", "text", "paren.lparen", "constant.language"],
                    regex: "(__traits)(\\s*)(\\()(" + identifierRe + ")"
                }, { // import|module abc
                    token: ["keyword", "text", "variable.module"],
                    regex: "(import|module)(\\s+)((?:" + identifierRe + "\\.?)*)"
                }, { // storage Name
                    token: ["keyword.storage", "text", "entity.name.type"],
                    regex: "(" + storages + ")(\\s*)(" + identifierRe + ")"
                }, { // alias|typedef foo bar;
                    token: ["keyword", "text", "variable.storage", "text"],
                    regex: "(alias|typedef)(\\s*)(" + identifierRe + ")(\\s*)"
                }, {  //-------------------------------------------------------- OTHERS
                    token: "constant.numeric", // hex
                    regex: "0[xX][0-9a-fA-F_]+(l|ul|u|f|F|L|U|UL)?\\b"
                }, {
                    token: "constant.numeric", // float
                    regex: "[+-]?\\d[\\d_]*(?:(?:\\.[\\d_]*)?(?:[eE][+-]?[\\d_]+)?)?(l|ul|u|f|F|L|U|UL)?\\b"
                }, {
                    token: "entity.other.attribute-name",
                    regex: "@" + identifierRe
                }, {
                    token: keywordMapper,
                    regex: "[a-zA-Z_][a-zA-Z0-9_]*\\b"
                }, {
                    token: "keyword.operator",
                    regex: operators
                }, {
                    token: "punctuation.operator",
                    regex: "\\?|\\:|\\,|\\;|\\.|\\:"
                }, {
                    token: "paren.lparen",
                    regex: "[[({]"
                }, {
                    token: "paren.rparen",
                    regex: "[\\])}]"
                }, {
                    token: "text",
                    regex: "\\s+"
                }
            ],
            "star-comment": [
                {
                    token: "comment", // closing comment
                    regex: "\\*\\/",
                    next: "start"
                }, {
                    defaultToken: 'comment'
                }
            ],
            "plus-comment": [
                {
                    token: "comment", // closing comment
                    regex: "\\+\\/",
                    next: "start"
                }, {
                    defaultToken: 'comment'
                }
            ],

            "quote-string": [
                stringEscapesSeq,
                {
                    token: "string",
                    regex: '"[cdw]?',
                    next: "start"
                }, {
                    defaultToken: 'string'
                }
            ],

            "backtick-string": [
                stringEscapesSeq,
                {
                    token: "string",
                    regex: '`[cdw]?',
                    next: "start"
                }, {
                    defaultToken: 'string'
                }
            ],

            "operator-heredoc-string": [
                {
                    onMatch: function (value, currentState, state) {
                        value = value.substring(value.length - 2, value.length - 1);
                        var map = {'>': '<', ']': '[', ')': '(', '}': '{'};
                        if (Object.keys(map).indexOf(value) != -1)
                            value = map[value];
                        if (value != state[1]) return "string";
                        state.shift();
                        state.shift();

                        return "string";
                    },
                    regex: '(?:[\\]\\)}>]+)"',
                    next: 'start'
                }, {
                    token: 'string',
                    regex: '[^\\]\\)}>]+'
                }
            ],

            "identifier-heredoc-string": [
                {
                    onMatch: function (value, currentState, state) {
                        value = value.substring(0, value.length - 1);
                        if (value != state[1]) return "string";
                        state.shift();
                        state.shift();

                        return "string";
                    },
                    regex: '^(?:[A-Za-z_][a-zA-Z0-9]+)"',
                    next: 'start'
                }, {
                    token: 'string',
                    regex: '[^\\]\\)}>]+'
                }
            ],

            "d-asm": [
                {
                    token: "paren.rparen",
                    regex: "\\}",
                    next: "start"
                }, {
                    token: 'keyword.instruction',
                    regex: '[a-zA-Z]+',
                    next: 'd-asm-instruction'
                }, {
                    token: "text",
                    regex: "\\s+"
                }
            ],

            // minimal asm support
            'd-asm-instruction': [
                {
                    token: 'constant.language',
                    regex: /AL|AH|AX|EAX|BL|BH|BX|EBX|CL|CH|CX|ECX|DL|DH|DX|EDX|BP|EBP|SP|ESP|DI|EDI|SI|ESI/i
                }, {
                    token: 'identifier',
                    regex: '[a-zA-Z]+'
                }, {
                    token: 'string',
                    regex: '".*"'
                }, {
                    token: 'comment',
                    regex: '//.*$'
                }, {
                    token: 'constant.numeric',
                    regex: '[0-9.xA-F]+'
                }, {
                    token: 'punctuation.operator',
                    regex: '\\,'
                }, {
                    token: 'punctuation.operator',
                    regex: ';',
                    next: 'd-asm'
                }, {
                    token: 'text',
                    regex: '\\s+'
                }
            ]
        };

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

    DHighlightRules.metaData = {
        comment: 'D language',
        fileTypes: ['d', 'di'],
        firstLineMatch: '^#!.*\\b[glr]?dmd\\b.',
        foldingStartMarker: '(?x)/\\*\\*(?!\\*)|^(?![^{]*?//|[^{]*?/\\*(?!.*?\\*/.*?\\{)).*?\\{\\s*($|//|/\\*(?!.*?\\*/.*\\S))',
        foldingStopMarker: '(?<!\\*)\\*\\*/|^\\s*\\}',
        keyEquivalent: '^~D',
        name: 'D',
        scopeName: 'source.d'
    };
    oop.inherits(DHighlightRules, TextHighlightRules);

    exports.DHighlightRules = DHighlightRules;
});
