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

/* ***** 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;
 * 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 TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;

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

    this.$rules = {
        "start" : [{
                regex: "^(?:\\*{15}|={67}|-{3}|\\+{3})$",
                token: "punctuation.definition.separator.diff",
                "name": "keyword"
            }, { //diff.range.unified
                regex: "^(@@)(\\s*.+?\\s*)(@@)(.*)$",
                token: [
                    "constant",
                    "constant.numeric",
                    "constant",
                    "comment.doc.tag"
                ]
            }, { //diff.range.normal
                regex: "^(\\d+)([,\\d]+)(a|d|c)(\\d+)([,\\d]+)(.*)$",
                token: [
                    "constant.numeric",
                    "punctuation.definition.range.diff",
                    "constant.function",
                    "constant.numeric",
                    "punctuation.definition.range.diff",
                    "invalid"
                ],
                "name": "meta."
            }, {
                regex: "^(\\-{3}|\\+{3}|\\*{3})( .+)$",
                token: [
                    "constant.numeric",
                    "meta.tag"
                ]
            }, { // added
                regex: "^([!+>])(.*?)(\\s*)$",
                token: [
                    "support.constant",
                    "text",
                    "invalid"
                ]
            }, { // removed
                regex: "^([<\\-])(.*?)(\\s*)$",
                token: [
                    "support.function",
                    "string",
                    "invalid"
                ]
            }, {
                regex: "^(diff)(\\s+--\\w+)?(.+?)( .+)?$",
                token: ["variable", "variable", "keyword", "variable"]
            }, {
                regex: "^Index.+$",
                token: "variable"
            }, {
                regex: "^\\s+$",
                token: "text"
            }, {
                regex: "\\s*$",
                token: "invalid"
            }, {
                defaultToken: "invisible",
                caseInsensitive: true
            }
        ]
    };
};

oop.inherits(DiffHighlightRules, TextHighlightRules);

exports.DiffHighlightRules = DiffHighlightRules;
});