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

'use strict';

import {ILanguage} from './types';

export var language = <ILanguage> {
	displayName:    'Jade',
	name:           'jade',
	defaultToken:   '',

	ignoreCase: true,

	lineComment: '//',

	brackets: [
			{ token:'delimiter.curly', open: '{', close: '}' },
			{ token:'delimiter.array', open: '[', close: ']' },
			{ token:'delimiter.parenthesis', open: '(', close: ')' }
	],

	keywords: [	'append', 'block', 'case', 'default', 'doctype', 'each', 'else', 'extends',
		'for', 'if', 'in', 'include', 'mixin', 'typeof', 'unless', 'var', 'when'],

	tags: [
		'a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio',
		'b', 'base', 'basefont', 'bdi', 'bdo', 'blockquote', 'body', 'br', 'button',
		'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'command',
		'datalist', 'dd', 'del', 'details', 'dfn', 'div', 'dl', 'dt',
		'em', 'embed',
		'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'frame', 'frameset',
		'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html',
		'i', 'iframe', 'img', 'input', 'ins',
		'keygen', 'kbd',
		'label', 'li', 'link',
		'map', 'mark', 'menu', 'meta', 'meter',
		'nav', 'noframes', 'noscript',
		'object', 'ol', 'optgroup', 'option', 'output',
		'p', 'param', 'pre', 'progress',
		'q',
		'rp', 'rt', 'ruby',
		's', 'samp', 'script', 'section', 'select', 'small', 'source', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup',
		'table', 'tbody', 'td', 'textarea', 'tfoot', 'th', 'thead', 'time', 'title', 'tr', 'tracks', 'tt',
		'u', 'ul',
		'video',
		'wbr'
	],

	// 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})/,

	tokenizer: {
		root: [

			// Tag or a keyword at start
			[/^(\s*)([a-zA-Z_-][\w-]*)/,
				{ cases: {
					'$2@tags': { cases: { '@eos': ['', 'tag'], '@default': ['', { token: 'tag', next: '@tag.$1' }, ] } },
					'$2@keywords': [ '', { token: 'keyword.$2'}, ],
					'@default': [ '', '', ]}}
			],

			// id
			[/^(\s*)(#[a-zA-Z_-][\w-]*)/, { cases: { '@eos': ['', 'tag.id'], '@default': ['', { token: 'tag.id', next: '@tag.$1' }] }}],

			// class
			[/^(\s*)(\.[a-zA-Z_-][\w-]*)/, { cases: { '@eos': ['', 'tag.class'], '@default': ['', { token: 'tag.class', next: '@tag.$1' }] } }],

			// plain text with pipe
			[/^(\s*)(\|.*)$/, '' ],

			{ include: '@whitespace' },

			// keywords
			[/[a-zA-Z_$][\w$]*/, { cases: { '@keywords': {token:'keyword.$0'},
											'@default': '' } }],

			// delimiters and operators
			[/[{}()\[\]]/, '@brackets'],
			[/@symbols/, 'delimiter'],

			// numbers
			[/\d+\.\d+([eE][\-+]?\d+)?/, 'number.float'],
			[/\d+/, 'number'],

			// strings:
			[/"/,  'string', '@string."' ],
			[/'/, 'string', '@string.\''],
		],

		tag: [
			[/(\.)(\s*$)/, [ {token: 'delimiter', next:'@blockText.$S2.'}, '']],
			[/\s+/, { token: '', next: '@simpleText' }],

			// id
			[/#[a-zA-Z_-][\w-]*/, { cases: { '@eos': { token: 'tag.id', next: '@pop' }, '@default': 'tag.id' } }],
			// class
			[/\.[a-zA-Z_-][\w-]*/, { cases: { '@eos': { token: 'tag.class', next: '@pop' }, '@default': 'tag.class' } }],
			// attributes
			[/\(/, { token: 'delimiter.parenthesis', bracket: '@open', next: '@attributeList' }],
		],

		simpleText: [
			[/[^#]+$/, {token: '', next: '@popall'}],
			[/[^#]+/, {token: ''}],

			// interpolation
			[/(#{)([^}]*)(})/, { cases: {
				'@eos': ['interpolation.delimiter', 'interpolation', { token: 'interpolation.delimiter', next: '@popall' }],
				'@default': ['interpolation.delimiter', 'interpolation', 'interpolation.delimiter'] }}],

			[/#$/, { token: '', next: '@popall' }],
			[/#/, '']
		],

		attributeList: [
			[/\s+/, '' ],
			[/(\w+)(\s*=\s*)("|')/, ['attribute.name', 'delimiter', { token: 'attribute.value', next:'@value.$3'}]],
			[/\w+/, 'attribute.name'],


			[/,/, { cases: { '@eos': { token: 'attribute.delimiter', next: '@popall' }, '@default': 'attribute.delimiter' } }],

			[/\)$/, { token: 'delimiter.parenthesis', bracket: '@close', next: '@popall' }],
			[/\)/, { token: 'delimiter.parenthesis', bracket: '@close', next: '@pop' }],
		],

		whitespace: [
			[/^(\s*)(\/\/.*)$/, { token: 'comment', next: '@blockText.$1.comment' } ],
			[/[ \t\r\n]+/, ''],
			[/<!--/, { token: 'comment', bracket: '@open', next: '@comment' }],
		],

		blockText: [
			[/^\s+.*$/, { cases: { '($S2\\s+.*$)': { token: '$S3' }, '@default': { token: '@rematch', next: '@popall' } } }],
			[/./,  { token: '@rematch', next: '@popall' }]
		],

		comment: [
			[/[^<\-]+/, 'comment.content' ],
			[/-->/,  { token: 'comment', bracket: '@close', next: '@pop' } ],
			[/<!--/, 'comment.content.invalid'],
			[/[<\-]/, 'comment.content' ]
		],

		string: [
			[/[^\\"'#]+/, { cases: { '@eos': { token: 'string', next: '@popall' }, '@default': 'string' } }],
			[/@escapes/, { cases: { '@eos': { token: 'string.escape', next: '@popall' }, '@default': 'string.escape' }}],
			[/\\./, { cases: { '@eos': { token: 'string.escape.invalid', next: '@popall' }, '@default': 'string.escape.invalid' }}],
			// interpolation
			[/(#{)([^}]*)(})/, ['interpolation.delimiter', 'interpolation', 'interpolation.delimiter']],
			[/#/, 'string'],
			[/["']/, { cases: { '$#==$S2': { token: 'string', next: '@pop' }, '@default': { token: 'string' } } }],
		],

		// Almost identical to above, except for escapes and the output token
		value: [
			[/[^\\"']+/, { cases: { '@eos': { token: 'attribute.value', next: '@popall' }, '@default': 'attribute.value' }}],
			[/\\./, { cases: { '@eos': { token: 'attribute.value', next: '@popall' }, '@default': 'attribute.value' }}],
			[/["']/, { cases: { '$#==$S2': { token: 'attribute.value', next: '@pop' }, '@default': { token: 'attribute.value' } } }],
		],
	},
};