/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
export var conf = {
    comments: {
        lineComment: '//',
        blockComment: ['/*', '*/']
    },
    brackets: [
        ['{', '}'],
        ['[', ']'],
        ['(', ')']
    ],
    autoClosingPairs: [
        { open: '{', close: '}' },
        { open: '[', close: ']' },
        { open: '(', close: ')' },
        { open: "'", close: "'", notIn: ['string', 'comment'] },
        { open: '"', close: '"', notIn: ['string'] },
        { open: '`', close: '`', notIn: ['string', 'comment'] },
        { open: '/**', close: ' */', notIn: ['string'] }
    ],
    surroundingPairs: [
        { open: '{', close: '}' },
        { open: '[', close: ']' },
        { open: '(', close: ')' },
        { open: '<', close: '>' },
        { open: "'", close: "'" },
        { open: '(', close: ')' },
        { open: '"', close: '"' },
        { open: '`', close: '`' }
    ],
    folding: {
        markers: {
            start: /^\s*\s*#?region\b/,
            end: /^\s*\s*#?endregion\b/
        }
    }
};
export var language = {
    defaultToken: 'invalid',
    tokenPostfix: '.dart',
    keywords: [
        'abstract',
        'dynamic',
        'implements',
        'show',
        'as',
        'else',
        'import',
        'static',
        'assert',
        'enum',
        'in',
        'super',
        'async',
        'export',
        'interface',
        'switch',
        'await',
        'extends',
        'is',
        'sync',
        'break',
        'external',
        'library',
        'this',
        'case',
        'factory',
        'mixin',
        'throw',
        'catch',
        'false',
        'new',
        'true',
        'class',
        'final',
        'null',
        'try',
        'const',
        'finally',
        'on',
        'typedef',
        'continue',
        'for',
        'operator',
        'var',
        'covariant',
        'Function',
        'part',
        'void',
        'default',
        'get',
        'rethrow',
        'while',
        'deferred',
        'hide',
        'return',
        'with',
        'do',
        'if',
        'set',
        'yield'
    ],
    typeKeywords: ['int', 'double', 'String', 'bool'],
    operators: [
        '+',
        '-',
        '*',
        '/',
        '~/',
        '%',
        '++',
        '--',
        '==',
        '!=',
        '>',
        '<',
        '>=',
        '<=',
        '=',
        '-=',
        '/=',
        '%=',
        '>>=',
        '^=',
        '+=',
        '*=',
        '~/=',
        '<<=',
        '&=',
        '!=',
        '||',
        '&&',
        '&',
        '|',
        '^',
        '~',
        '<<',
        '>>',
        '!',
        '>>>',
        '??',
        '?',
        ':',
        '|='
    ],
    // we include these common regular expressions
    symbols: /[=><!~?:&|+\-*\/\^%]+/,
    escapes: /\\(?:[abfnrtv\\"']|x[0-9A-Fa-f]{1,4}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})/,
    digits: /\d+(_+\d+)*/,
    octaldigits: /[0-7]+(_+[0-7]+)*/,
    binarydigits: /[0-1]+(_+[0-1]+)*/,
    hexdigits: /[[0-9a-fA-F]+(_+[0-9a-fA-F]+)*/,
    regexpctl: /[(){}\[\]\$\^|\-*+?\.]/,
    regexpesc: /\\(?:[bBdDfnrstvwWn0\\\/]|@regexpctl|c[A-Z]|x[0-9a-fA-F]{2}|u[0-9a-fA-F]{4})/,
    // The main tokenizer for our languages
    tokenizer: {
        root: [[/[{}]/, 'delimiter.bracket'], { include: 'common' }],
        common: [
            // identifiers and keywords
            [
                /[a-z_$][\w$]*/,
                {
                    cases: {
                        '@typeKeywords': 'type.identifier',
                        '@keywords': 'keyword',
                        '@default': 'identifier'
                    }
                }
            ],
            [/[A-Z_$][\w\$]*/, 'type.identifier'],
            // [/[A-Z][\w\$]*/, 'identifier'],
            // whitespace
            { include: '@whitespace' },
            // regular expression: ensure it is terminated before beginning (otherwise it is an opeator)
            [
                /\/(?=([^\\\/]|\\.)+\/([gimsuy]*)(\s*)(\.|;|,|\)|\]|\}|$))/,
                { token: 'regexp', bracket: '@open', next: '@regexp' }
            ],
            // @ annotations.
            [/@[a-zA-Z]+/, 'annotation'],
            // variable
            // delimiters and operators
            [/[()\[\]]/, '@brackets'],
            [/[<>](?!@symbols)/, '@brackets'],
            [/!(?=([^=]|$))/, 'delimiter'],
            [
                /@symbols/,
                {
                    cases: {
                        '@operators': 'delimiter',
                        '@default': ''
                    }
                }
            ],
            // numbers
            [/(@digits)[eE]([\-+]?(@digits))?/, 'number.float'],
            [/(@digits)\.(@digits)([eE][\-+]?(@digits))?/, 'number.float'],
            [/0[xX](@hexdigits)n?/, 'number.hex'],
            [/0[oO]?(@octaldigits)n?/, 'number.octal'],
            [/0[bB](@binarydigits)n?/, 'number.binary'],
            [/(@digits)n?/, 'number'],
            // delimiter: after number because of .\d floats
            [/[;,.]/, 'delimiter'],
            // strings
            [/"([^"\\]|\\.)*$/, 'string.invalid'],
            [/'([^'\\]|\\.)*$/, 'string.invalid'],
            [/"/, 'string', '@string_double'],
            [/'/, 'string', '@string_single']
            //   [/[a-zA-Z]+/, "variable"]
        ],
        whitespace: [
            [/[ \t\r\n]+/, ''],
            [/\/\*\*(?!\/)/, 'comment.doc', '@jsdoc'],
            [/\/\*/, 'comment', '@comment'],
            [/\/\/\/.*$/, 'comment.doc'],
            [/\/\/.*$/, 'comment']
        ],
        comment: [
            [/[^\/*]+/, 'comment'],
            [/\*\//, 'comment', '@pop'],
            [/[\/*]/, 'comment']
        ],
        jsdoc: [
            [/[^\/*]+/, 'comment.doc'],
            [/\*\//, 'comment.doc', '@pop'],
            [/[\/*]/, 'comment.doc']
        ],
        // We match regular expression quite precisely
        regexp: [
            [
                /(\{)(\d+(?:,\d*)?)(\})/,
                ['regexp.escape.control', 'regexp.escape.control', 'regexp.escape.control']
            ],
            [
                /(\[)(\^?)(?=(?:[^\]\\\/]|\\.)+)/,
                ['regexp.escape.control', { token: 'regexp.escape.control', next: '@regexrange' }]
            ],
            [/(\()(\?:|\?=|\?!)/, ['regexp.escape.control', 'regexp.escape.control']],
            [/[()]/, 'regexp.escape.control'],
            [/@regexpctl/, 'regexp.escape.control'],
            [/[^\\\/]/, 'regexp'],
            [/@regexpesc/, 'regexp.escape'],
            [/\\\./, 'regexp.invalid'],
            [
                /(\/)([gimsuy]*)/,
                [{ token: 'regexp', bracket: '@close', next: '@pop' }, 'keyword.other']
            ]
        ],
        regexrange: [
            [/-/, 'regexp.escape.control'],
            [/\^/, 'regexp.invalid'],
            [/@regexpesc/, 'regexp.escape'],
            [/[^\]]/, 'regexp'],
            [
                /\]/,
                {
                    token: 'regexp.escape.control',
                    next: '@pop',
                    bracket: '@close'
                }
            ]
        ],
        string_double: [
            [/[^\\"\$]+/, 'string'],
            [/[^\\"]+/, 'string'],
            [/@escapes/, 'string.escape'],
            [/\\./, 'string.escape.invalid'],
            [/"/, 'string', '@pop'],
            [/\$\w+/, 'identifier']
        ],
        string_single: [
            [/[^\\'\$]+/, 'string'],
            [/@escapes/, 'string.escape'],
            [/\\./, 'string.escape.invalid'],
            [/'/, 'string', '@pop'],
            [/\$\w+/, 'identifier']
        ]
    }
};