/*!-----------------------------------------------------------
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Version: 0.2.3(84e204b238a1eff25d4c6f611fdcd76a494005a7)
 * Released under the MIT license
 * https://github.com/Microsoft/vscode/blob/master/LICENSE.txt
 *-----------------------------------------------------------*/

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
define("vs/editor/standalone-languages/r", ["require", "exports"], function (require, exports) {
    'use strict';
    exports.language = {
        displayName: 'R',
        name: 'r',
        defaultToken: '',
        lineComment: '#',
        blockCommentStart: '',
        blockCommentEnd: '',
        roxygen: [
            '@param',
            '@return',
            '@name',
            '@rdname',
            '@examples',
            '@include',
            '@docType',
            '@S3method',
            '@TODO',
            '@aliases',
            '@alias',
            '@assignee',
            '@author',
            '@callGraphDepth',
            '@callGraph',
            '@callGraphPrimitives',
            '@concept',
            '@exportClass',
            '@exportMethod',
            '@exportPattern',
            '@export',
            '@formals',
            '@format',
            '@importClassesFrom',
            '@importFrom',
            '@importMethodsFrom',
            '@import',
            '@keywords',
            '@method',
            '@nord',
            '@note',
            '@references',
            '@seealso',
            '@setClass',
            '@slot',
            '@source',
            '@title',
            '@usage'
        ],
        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', '@roxygen'],
                [/(^#.*$)/, 'comment'],
                [/\s+/, 'white'],
                [/[,:;]/, 'delimiter'],
                [/@[a-zA-Z]\w*/, 'tag'],
                [/[a-zA-Z]\w*/, {
                        cases: {
                            '@keywords': 'keyword',
                            '@constants': 'constant',
                            '@default': 'identifier'
                        }
                    }]
            ],
            // Recognize Roxygen comments
            roxygen: [
                [/@\w+/, {
                        cases: {
                            '@roxygen': 'tag',
                            '@eos': { token: 'comment.doc', next: '@pop' },
                            '@default': 'comment.doc'
                        }
                    }],
                [/\s+/, {
                        cases: {
                            '@eos': { token: 'comment.doc', next: '@pop' },
                            '@default': 'comment.doc'
                        }
                    }],
                [/.*/, { token: 'comment.doc', next: '@pop' }]
            ],
            // Recognize positives, negatives, decimals, imaginaries, and scientific notation
            numbers: [
                [/-?(\d*\.)?\d+([eE][+\-]?\d+)?/, 'number']
            ],
            // Recognize operators
            operators: [
                [/<{1,2}-/, 'operator'],
                [/->{1,2}/, 'operator'],
                [/%[^%\s]+%/, 'operator'],
                [/\*\*/, 'operator'],
                [/%%/, 'operator'],
                [/&&/, 'operator'],
                [/\|\|/, 'operator'],
                [/<</, 'operator'],
                [/>>/, 'operator'],
                [/[-+=&|!<>^~*/:$]/, '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'],
            ]
        }
    };
});

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