/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
define(["require", "exports"], function (require, exports) {
    'use strict';
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.conf = {
        wordPattern: /(#?-?\d*\.\d\w*%?)|([@#!.:]?[\w-?]+%?)|[@#!.]/g,
        comments: {
            blockComment: ['/*', '*/'],
            lineComment: '//'
        },
        brackets: [
            ['{', '}'],
            ['[', ']'],
            ['(', ')'],
        ],
        autoClosingPairs: [
            { open: '{', close: '}', notIn: ['string', 'comment'] },
            { open: '[', close: ']', notIn: ['string', 'comment'] },
            { open: '(', close: ')', notIn: ['string', 'comment'] },
            { open: '"', close: '"', notIn: ['string', 'comment'] },
            { open: '\'', close: '\'', notIn: ['string', 'comment'] },
        ],
        surroundingPairs: [
            { open: '{', close: '}' },
            { open: '[', close: ']' },
            { open: '(', close: ')' },
            { open: '"', close: '"' },
            { open: '\'', close: '\'' },
        ],
        folding: {
            markers: {
                start: new RegExp("^\\s*\\/\\*\\s*#region\\b\\s*(.*?)\\s*\\*\\/"),
                end: new RegExp("^\\s*\\/\\*\\s*#endregion\\b.*\\*\\/")
            }
        }
    };
    exports.language = {
        defaultToken: '',
        tokenPostfix: '.less',
        identifier: '-?-?([a-zA-Z]|(\\\\(([0-9a-fA-F]{1,6}\\s?)|[^[0-9a-fA-F])))([\\w\\-]|(\\\\(([0-9a-fA-F]{1,6}\\s?)|[^[0-9a-fA-F])))*',
        identifierPlus: '-?-?([a-zA-Z:.]|(\\\\(([0-9a-fA-F]{1,6}\\s?)|[^[0-9a-fA-F])))([\\w\\-:.]|(\\\\(([0-9a-fA-F]{1,6}\\s?)|[^[0-9a-fA-F])))*',
        brackets: [
            { open: '{', close: '}', token: 'delimiter.curly' },
            { open: '[', close: ']', token: 'delimiter.bracket' },
            { open: '(', close: ')', token: 'delimiter.parenthesis' },
            { open: '<', close: '>', token: 'delimiter.angle' }
        ],
        tokenizer: {
            root: [
                { include: '@nestedJSBegin' },
                ['[ \\t\\r\\n]+', ''],
                { include: '@comments' },
                { include: '@keyword' },
                { include: '@strings' },
                { include: '@numbers' },
                ['[*_]?[a-zA-Z\\-\\s]+(?=:.*(;|(\\\\$)))', 'attribute.name', '@attribute'],
                ['url(\\-prefix)?\\(', { token: 'tag', next: '@urldeclaration' }],
                ['[{}()\\[\\]]', '@brackets'],
                ['[,:;]', 'delimiter'],
                ['#@identifierPlus', 'tag.id'],
                ['&', 'tag'],
                ['\\.@identifierPlus(?=\\()', 'tag.class', '@attribute'],
                ['\\.@identifierPlus', 'tag.class'],
                ['@identifierPlus', 'tag'],
                { include: '@operators' },
                ['@(@identifier(?=[:,\\)]))', 'variable', '@attribute'],
                ['@(@identifier)', 'variable'],
                ['@', 'key', '@atRules']
            ],
            nestedJSBegin: [
                ['``', 'delimiter.backtick'],
                ['`', { token: 'delimiter.backtick', next: '@nestedJSEnd', nextEmbedded: 'text/javascript' }],
            ],
            nestedJSEnd: [
                ['`', { token: 'delimiter.backtick', next: '@pop', nextEmbedded: '@pop' }],
            ],
            operators: [
                ['[<>=\\+\\-\\*\\/\\^\\|\\~]', 'operator']
            ],
            keyword: [
                ['(@[\\s]*import|![\\s]*important|true|false|when|iscolor|isnumber|isstring|iskeyword|isurl|ispixel|ispercentage|isem|hue|saturation|lightness|alpha|lighten|darken|saturate|desaturate|fadein|fadeout|fade|spin|mix|round|ceil|floor|percentage)\\b', 'keyword']
            ],
            urldeclaration: [
                { include: '@strings' },
                ['[^)\r\n]+', 'string'],
                ['\\)', { token: 'tag', next: '@pop' }],
            ],
            attribute: [
                { include: '@nestedJSBegin' },
                { include: '@comments' },
                { include: '@strings' },
                { include: '@numbers' },
                { include: '@keyword' },
                ['[a-zA-Z\\-]+(?=\\()', 'attribute.value', '@attribute'],
                ['>', 'operator', '@pop'],
                ['@identifier', 'attribute.value'],
                { include: '@operators' },
                ['@(@identifier)', 'variable'],
                ['[)\\}]', '@brackets', '@pop'],
                ['[{}()\\[\\]>]', '@brackets'],
                ['[;]', 'delimiter', '@pop'],
                ['[,=:]', 'delimiter'],
                ['\\s', ''],
                ['.', 'attribute.value']
            ],
            comments: [
                ['\\/\\*', 'comment', '@comment'],
                ['\\/\\/+.*', 'comment'],
            ],
            comment: [
                ['\\*\\/', 'comment', '@pop'],
                ['.', 'comment'],
            ],
            numbers: [
                ['(\\d*\\.)?\\d+([eE][\\-+]?\\d+)?', { token: 'attribute.value.number', next: '@units' }],
                ['#[0-9a-fA-F_]+(?!\\w)', 'attribute.value.hex']
            ],
            units: [
                ['(em|ex|ch|rem|vmin|vmax|vw|vh|vm|cm|mm|in|px|pt|pc|deg|grad|rad|turn|s|ms|Hz|kHz|%)?', 'attribute.value.unit', '@pop']
            ],
            strings: [
                ['~?"', { token: 'string.delimiter', next: '@stringsEndDoubleQuote' }],
                ['~?\'', { token: 'string.delimiter', next: '@stringsEndQuote' }]
            ],
            stringsEndDoubleQuote: [
                ['\\\\"', 'string'],
                ['"', { token: 'string.delimiter', next: '@popall' }],
                ['.', 'string']
            ],
            stringsEndQuote: [
                ['\\\\\'', 'string'],
                ['\'', { token: 'string.delimiter', next: '@popall' }],
                ['.', 'string']
            ],
            atRules: [
                { include: '@comments' },
                { include: '@strings' },
                ['[()]', 'delimiter'],
                ['[\\{;]', 'delimiter', '@pop'],
                ['.', 'key']
            ]
        }
    };
});
