/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import type { languages } from 'monaco-editor-core';

export const conf: languages.LanguageConfiguration = {
	comments: {
		lineComment: '//',
		blockComment: ['/*', '*/']
	},
	brackets: [
		['{', '}'],
		['[', ']'],
		['(', ')']
	],
	autoClosingPairs: [
		{ open: '{', close: '}' },
		{ open: '[', close: ']' },
		{ open: '(', close: ')' },
		{ open: "'", close: "'", notIn: ['string', 'comment'] },
		{ open: '"', close: '"', notIn: ['string', 'comment'] }
	],
	surroundingPairs: [
		{ open: '{', close: '}' },
		{ open: '[', close: ']' },
		{ open: '(', close: ')' },
		{ open: '<', close: '>' },
		{ open: "'", close: "'" },
		{ open: '"', close: '"' }
	]
};

export const language = <languages.IMonarchLanguage>{
	defaultToken: '',
	tokenPostfix: '.ecl',
	ignoreCase: true,

	brackets: [
		{ open: '{', close: '}', token: 'delimiter.curly' },
		{ open: '[', close: ']', token: 'delimiter.square' },
		{ open: '(', close: ')', token: 'delimiter.parenthesis' },
		{ open: '<', close: '>', token: 'delimiter.angle' }
	],

	pounds: [
		'append',
		'break',
		'declare',
		'demangle',
		'end',
		'for',
		'getdatatype',
		'if',
		'inmodule',
		'loop',
		'mangle',
		'onwarning',
		'option',
		'set',
		'stored',
		'uniquename'
	].join('|'),

	keywords: [
		'__compressed__',
		'after',
		'all',
		'and',
		'any',
		'as',
		'atmost',
		'before',
		'beginc',
		'best',
		'between',
		'case',
		'cluster',
		'compressed',
		'compression',
		'const',
		'counter',
		'csv',
		'default',
		'descend',
		'embed',
		'encoding',
		'encrypt',
		'end',
		'endc',
		'endembed',
		'endmacro',
		'enum',
		'escape',
		'except',
		'exclusive',
		'expire',
		'export',
		'extend',
		'fail',
		'few',
		'fileposition',
		'first',
		'flat',
		'forward',
		'from',
		'full',
		'function',
		'functionmacro',
		'group',
		'grouped',
		'heading',
		'hole',
		'ifblock',
		'import',
		'in',
		'inner',
		'interface',
		'internal',
		'joined',
		'keep',
		'keyed',
		'last',
		'left',
		'limit',
		'linkcounted',
		'literal',
		'little_endian',
		'load',
		'local',
		'locale',
		'lookup',
		'lzw',
		'macro',
		'many',
		'maxcount',
		'maxlength',
		'min skew',
		'module',
		'mofn',
		'multiple',
		'named',
		'namespace',
		'nocase',
		'noroot',
		'noscan',
		'nosort',
		'not',
		'noxpath',
		'of',
		'onfail',
		'only',
		'opt',
		'or',
		'outer',
		'overwrite',
		'packed',
		'partition',
		'penalty',
		'physicallength',
		'pipe',
		'prefetch',
		'quote',
		'record',
		'repeat',
		'retry',
		'return',
		'right',
		'right1',
		'right2',
		'rows',
		'rowset',
		'scan',
		'scope',
		'self',
		'separator',
		'service',
		'shared',
		'skew',
		'skip',
		'smart',
		'soapaction',
		'sql',
		'stable',
		'store',
		'terminator',
		'thor',
		'threshold',
		'timelimit',
		'timeout',
		'token',
		'transform',
		'trim',
		'type',
		'unicodeorder',
		'unordered',
		'unsorted',
		'unstable',
		'update',
		'use',
		'validate',
		'virtual',
		'whole',
		'width',
		'wild',
		'within',
		'wnotrim',
		'xml',
		'xpath'
	],

	functions: [
		'abs',
		'acos',
		'aggregate',
		'allnodes',
		'apply',
		'ascii',
		'asin',
		'assert',
		'asstring',
		'atan',
		'atan2',
		'ave',
		'build',
		'buildindex',
		'case',
		'catch',
		'choose',
		'choosen',
		'choosesets',
		'clustersize',
		'combine',
		'correlation',
		'cos',
		'cosh',
		'count',
		'covariance',
		'cron',
		'dataset',
		'dedup',
		'define',
		'denormalize',
		'dictionary',
		'distribute',
		'distributed',
		'distribution',
		'ebcdic',
		'enth',
		'error',
		'evaluate',
		'event',
		'eventextra',
		'eventname',
		'exists',
		'exp',
		'fail',
		'failcode',
		'failmessage',
		'fetch',
		'fromunicode',
		'fromxml',
		'getenv',
		'getisvalid',
		'global',
		'graph',
		'group',
		'hash',
		'hash32',
		'hash64',
		'hashcrc',
		'hashmd5',
		'having',
		'httpcall',
		'httpheader',
		'if',
		'iff',
		'index',
		'intformat',
		'isvalid',
		'iterate',
		'join',
		'keydiff',
		'keypatch',
		'keyunicode',
		'length',
		'library',
		'limit',
		'ln',
		'loadxml',
		'local',
		'log',
		'loop',
		'map',
		'matched',
		'matchlength',
		'matchposition',
		'matchtext',
		'matchunicode',
		'max',
		'merge',
		'mergejoin',
		'min',
		'nofold',
		'nolocal',
		'nonempty',
		'normalize',
		'nothor',
		'notify',
		'output',
		'parallel',
		'parse',
		'pipe',
		'power',
		'preload',
		'process',
		'project',
		'pull',
		'random',
		'range',
		'rank',
		'ranked',
		'realformat',
		'recordof',
		'regexfind',
		'regexreplace',
		'regroup',
		'rejected',
		'rollup',
		'round',
		'roundup',
		'row',
		'rowdiff',
		'sample',
		'sequential',
		'set',
		'sin',
		'sinh',
		'sizeof',
		'soapcall',
		'sort',
		'sorted',
		'sqrt',
		'stepped',
		'stored',
		'sum',
		'table',
		'tan',
		'tanh',
		'thisnode',
		'topn',
		'tounicode',
		'toxml',
		'transfer',
		'transform',
		'trim',
		'truncate',
		'typeof',
		'ungroup',
		'unicodeorder',
		'variance',
		'wait',
		'which',
		'workunit',
		'xmldecode',
		'xmlencode',
		'xmltext',
		'xmlunicode'
	],

	typesint: ['integer', 'unsigned'].join('|'),

	typesnum: ['data', 'qstring', 'string', 'unicode', 'utf8', 'varstring', 'varunicode'],

	typesone: [
		'ascii',
		'big_endian',
		'boolean',
		'data',
		'decimal',
		'ebcdic',
		'grouped',
		'integer',
		'linkcounted',
		'pattern',
		'qstring',
		'real',
		'record',
		'rule',
		'set of',
		'streamed',
		'string',
		'token',
		'udecimal',
		'unicode',
		'unsigned',
		'utf8',
		'varstring',
		'varunicode'
	].join('|'),

	operators: ['+', '-', '/', ':=', '<', '<>', '=', '>', '\\', 'and', 'in', 'not', 'or'],

	symbols: /[=><!~?:&|+\-*\/\^%]+/,

	// escape sequences
	escapes: /\\(?:[abfnrtv\\"']|x[0-9A-Fa-f]{1,4}|u[0-9A-Fa-f]{4}|U[0-9A-Fa-f]{8})/,

	// The main tokenizer for our languages
	tokenizer: {
		root: [
			[/@typesint[4|8]/, 'type'],
			[/#(@pounds)/, 'type'],
			[/@typesone/, 'type'],

			[
				/[a-zA-Z_$][\w-$]*/,
				{
					cases: {
						'@functions': 'keyword.function',
						'@keywords': 'keyword',
						'@operators': 'operator'
					}
				}
			],

			// whitespace
			{ include: '@whitespace' },

			[/[{}()\[\]]/, '@brackets'],
			[/[<>](?!@symbols)/, '@brackets'],
			[
				/@symbols/,
				{
					cases: {
						'@operators': 'delimiter',
						'@default': ''
					}
				}
			],

			// numbers
			[/[0-9_]*\.[0-9_]+([eE][\-+]?\d+)?/, 'number.float'],
			[/0[xX][0-9a-fA-F_]+/, 'number.hex'],
			[/0[bB][01]+/, 'number.hex'], // binary: use same theme style as hex
			[/[0-9_]+/, 'number'],

			// delimiter: after number because of .\d floats
			[/[;,.]/, 'delimiter'],

			// strings
			[/"([^"\\]|\\.)*$/, 'string.invalid'],
			[/"/, 'string', '@string'],

			// characters
			[/'[^\\']'/, 'string'],
			[/(')(@escapes)(')/, ['string', 'string.escape', 'string']],
			[/'/, 'string.invalid']
		],

		whitespace: [
			[/[ \t\v\f\r\n]+/, ''],
			[/\/\*/, 'comment', '@comment'],
			[/\/\/.*$/, 'comment']
		],

		comment: [
			[/[^\/*]+/, 'comment'],
			[/\*\//, 'comment', '@pop'],
			[/[\/*]/, 'comment']
		],

		string: [
			[/[^\\']+/, 'string'],
			[/@escapes/, 'string.escape'],
			[/\\./, 'string.escape.invalid'],
			[/'/, 'string', '@pop']
		]
	}
};