/*---------------------------------------------------------------------------------------------
 *  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: '#'
    },
    brackets: [
        ['{', '}'],
        ['[', ']'],
        ['(', ')']
    ],
    autoClosingPairs: [
        { open: '{', close: '}' },
        { open: '[', close: ']' },
        { open: '(', close: ')' },
        { open: '"', close: '"' }
    ],
    surroundingPairs: [
        { open: '{', close: '}' },
        { open: '[', close: ']' },
        { open: '(', close: ')' },
        { open: '"', close: '"' }
    ]
};
export var language = {
    defaultToken: '',
    tokenPostfix: '.r',
    roxygen: [
        '@alias',
        '@aliases',
        '@assignee',
        '@author',
        '@backref',
        '@callGraph',
        '@callGraphDepth',
        '@callGraphPrimitives',
        '@concept',
        '@describeIn',
        '@description',
        '@details',
        '@docType',
        '@encoding',
        '@evalNamespace',
        '@evalRd',
        '@example',
        '@examples',
        '@export',
        '@exportClass',
        '@exportMethod',
        '@exportPattern',
        '@family',
        '@field',
        '@formals',
        '@format',
        '@import',
        '@importClassesFrom',
        '@importFrom',
        '@importMethodsFrom',
        '@include',
        '@inherit',
        '@inheritDotParams',
        '@inheritParams',
        '@inheritSection',
        '@keywords',
        '@md',
        '@method',
        '@name',
        '@noMd',
        '@noRd',
        '@note',
        '@param',
        '@rawNamespace',
        '@rawRd',
        '@rdname',
        '@references',
        '@return',
        '@S3method',
        '@section',
        '@seealso',
        '@setClass',
        '@slot',
        '@source',
        '@template',
        '@templateVar',
        '@title',
        '@TODO',
        '@usage',
        '@useDynLib'
    ],
    constants: [
        'NULL',
        'FALSE',
        'TRUE',
        'NA',
        'Inf',
        'NaN',
        'NA_integer_',
        'NA_real_',
        'NA_complex_',
        'NA_character_',
        'T',
        'F',
        'LETTERS',
        'letters',
        'month.abb',
        'month.name',
        'pi',
        'R.version.string'
    ],
    keywords: [
        'break',
        'next',
        'return',
        'if',
        'else',
        'for',
        'in',
        'repeat',
        'while',
        'array',
        'category',
        'character',
        'complex',
        'double',
        'function',
        'integer',
        'list',
        'logical',
        'matrix',
        'numeric',
        'vector',
        'data.frame',
        'factor',
        'library',
        'require',
        'attach',
        'detach',
        'source'
    ],
    special: ['\\n', '\\r', '\\t', '\\b', '\\a', '\\f', '\\v', "\\'", '\\"', '\\\\'],
    brackets: [
        { open: '{', close: '}', token: 'delimiter.curly' },
        { open: '[', close: ']', token: 'delimiter.bracket' },
        { open: '(', close: ')', token: 'delimiter.parenthesis' }
    ],
    tokenizer: {
        root: [
            { include: '@numbers' },
            { include: '@strings' },
            [/[{}\[\]()]/, '@brackets'],
            { include: '@operators' },
            [/#'$/, 'comment.doc'],
            [/#'/, 'comment.doc', '@roxygen'],
            [/(^#.*$)/, 'comment'],
            [/\s+/, 'white'],
            [/[,:;]/, 'delimiter'],
            [/@[a-zA-Z]\w*/, 'tag'],
            [
                /[a-zA-Z]\w*/,
                {
                    cases: {
                        '@keywords': 'keyword',
                        '@constants': 'constant',
                        '@default': 'identifier'
                    }
                }
            ]
        ],
        // Recognize Roxygen comments
        roxygen: [
            [
                /@\w+/,
                {
                    cases: {
                        '@roxygen': 'tag',
                        '@eos': { token: 'comment.doc', next: '@pop' },
                        '@default': 'comment.doc'
                    }
                }
            ],
            [
                /\s+/,
                {
                    cases: {
                        '@eos': { token: 'comment.doc', next: '@pop' },
                        '@default': 'comment.doc'
                    }
                }
            ],
            [/.*/, { token: 'comment.doc', next: '@pop' }]
        ],
        // Recognize positives, negatives, decimals, imaginaries, and scientific notation
        numbers: [
            [/0[xX][0-9a-fA-F]+/, 'number.hex'],
            [/-?(\d*\.)?\d+([eE][+\-]?\d+)?/, 'number']
        ],
        // Recognize operators
        operators: [
            [/<{1,2}-/, 'operator'],
            [/->{1,2}/, 'operator'],
            [/%[^%\s]+%/, 'operator'],
            [/\*\*/, 'operator'],
            [/%%/, 'operator'],
            [/&&/, 'operator'],
            [/\|\|/, 'operator'],
            [/<</, 'operator'],
            [/>>/, 'operator'],
            [/[-+=&|!<>^~*/:$]/, 'operator']
        ],
        // Recognize strings, including those broken across lines
        strings: [
            [/'/, 'string.escape', '@stringBody'],
            [/"/, 'string.escape', '@dblStringBody']
        ],
        stringBody: [
            [
                /\\./,
                {
                    cases: {
                        '@special': 'string',
                        '@default': 'error-token'
                    }
                }
            ],
            [/'/, 'string.escape', '@popall'],
            [/./, 'string']
        ],
        dblStringBody: [
            [
                /\\./,
                {
                    cases: {
                        '@special': 'string',
                        '@default': 'error-token'
                    }
                }
            ],
            [/"/, 'string.escape', '@popall'],
            [/./, 'string']
        ]
    }
};