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Diffstat (limited to 'vanilla/node_modules/css-tree/cjs/parser/create.cjs')
| -rw-r--r-- | vanilla/node_modules/css-tree/cjs/parser/create.cjs | 340 |
1 files changed, 0 insertions, 340 deletions
diff --git a/vanilla/node_modules/css-tree/cjs/parser/create.cjs b/vanilla/node_modules/css-tree/cjs/parser/create.cjs deleted file mode 100644 index 0a59c4e..0000000 --- a/vanilla/node_modules/css-tree/cjs/parser/create.cjs +++ /dev/null @@ -1,340 +0,0 @@ -'use strict'; - -const List = require('../utils/List.cjs'); -const SyntaxError = require('./SyntaxError.cjs'); -const index = require('../tokenizer/index.cjs'); -const sequence = require('./sequence.cjs'); -const OffsetToLocation = require('../tokenizer/OffsetToLocation.cjs'); -const TokenStream = require('../tokenizer/TokenStream.cjs'); -const utils = require('../tokenizer/utils.cjs'); -const types = require('../tokenizer/types.cjs'); -const names = require('../tokenizer/names.cjs'); - -const NOOP = () => {}; -const EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!) -const NUMBERSIGN = 0x0023; // U+0023 NUMBER SIGN (#) -const SEMICOLON = 0x003B; // U+003B SEMICOLON (;) -const LEFTCURLYBRACKET = 0x007B; // U+007B LEFT CURLY BRACKET ({) -const NULL = 0; - -function createParseContext(name) { - return function() { - return this[name](); - }; -} - -function fetchParseValues(dict) { - const result = Object.create(null); - - for (const name of Object.keys(dict)) { - const item = dict[name]; - const fn = item.parse || item; - - if (fn) { - result[name] = fn; - } - } - - return result; -} - -function processConfig(config) { - const parseConfig = { - context: Object.create(null), - features: Object.assign(Object.create(null), config.features), - scope: Object.assign(Object.create(null), config.scope), - atrule: fetchParseValues(config.atrule), - pseudo: fetchParseValues(config.pseudo), - node: fetchParseValues(config.node) - }; - - for (const [name, context] of Object.entries(config.parseContext)) { - switch (typeof context) { - case 'function': - parseConfig.context[name] = context; - break; - - case 'string': - parseConfig.context[name] = createParseContext(context); - break; - } - } - - return { - config: parseConfig, - ...parseConfig, - ...parseConfig.node - }; -} - -function createParser(config) { - let source = ''; - let filename = '<unknown>'; - let needPositions = false; - let onParseError = NOOP; - let onParseErrorThrow = false; - - const locationMap = new OffsetToLocation.OffsetToLocation(); - const parser = Object.assign(new TokenStream.TokenStream(), processConfig(config || {}), { - parseAtrulePrelude: true, - parseRulePrelude: true, - parseValue: true, - parseCustomProperty: false, - - readSequence: sequence.readSequence, - - consumeUntilBalanceEnd: () => 0, - consumeUntilLeftCurlyBracket(code) { - return code === LEFTCURLYBRACKET ? 1 : 0; - }, - consumeUntilLeftCurlyBracketOrSemicolon(code) { - return code === LEFTCURLYBRACKET || code === SEMICOLON ? 1 : 0; - }, - consumeUntilExclamationMarkOrSemicolon(code) { - return code === EXCLAMATIONMARK || code === SEMICOLON ? 1 : 0; - }, - consumeUntilSemicolonIncluded(code) { - return code === SEMICOLON ? 2 : 0; - }, - - createList() { - return new List.List(); - }, - createSingleNodeList(node) { - return new List.List().appendData(node); - }, - getFirstListNode(list) { - return list && list.first; - }, - getLastListNode(list) { - return list && list.last; - }, - - parseWithFallback(consumer, fallback) { - const startIndex = this.tokenIndex; - - try { - return consumer.call(this); - } catch (e) { - if (onParseErrorThrow) { - throw e; - } - - this.skip(startIndex - this.tokenIndex); - const fallbackNode = fallback.call(this); - - onParseErrorThrow = true; - onParseError(e, fallbackNode); - onParseErrorThrow = false; - - return fallbackNode; - } - }, - - lookupNonWSType(offset) { - let type; - - do { - type = this.lookupType(offset++); - if (type !== types.WhiteSpace && type !== types.Comment) { - return type; - } - } while (type !== NULL); - - return NULL; - }, - - charCodeAt(offset) { - return offset >= 0 && offset < source.length ? source.charCodeAt(offset) : 0; - }, - substring(offsetStart, offsetEnd) { - return source.substring(offsetStart, offsetEnd); - }, - substrToCursor(start) { - return this.source.substring(start, this.tokenStart); - }, - - cmpChar(offset, charCode) { - return utils.cmpChar(source, offset, charCode); - }, - cmpStr(offsetStart, offsetEnd, str) { - return utils.cmpStr(source, offsetStart, offsetEnd, str); - }, - - consume(tokenType) { - const start = this.tokenStart; - - this.eat(tokenType); - - return this.substrToCursor(start); - }, - consumeFunctionName() { - const name = source.substring(this.tokenStart, this.tokenEnd - 1); - - this.eat(types.Function); - - return name; - }, - consumeNumber(type) { - const number = source.substring(this.tokenStart, utils.consumeNumber(source, this.tokenStart)); - - this.eat(type); - - return number; - }, - - eat(tokenType) { - if (this.tokenType !== tokenType) { - const tokenName = names[tokenType].slice(0, -6).replace(/-/g, ' ').replace(/^./, m => m.toUpperCase()); - let message = `${/[[\](){}]/.test(tokenName) ? `"${tokenName}"` : tokenName} is expected`; - let offset = this.tokenStart; - - // tweak message and offset - switch (tokenType) { - case types.Ident: - // when identifier is expected but there is a function or url - if (this.tokenType === types.Function || this.tokenType === types.Url) { - offset = this.tokenEnd - 1; - message = 'Identifier is expected but function found'; - } else { - message = 'Identifier is expected'; - } - break; - - case types.Hash: - if (this.isDelim(NUMBERSIGN)) { - this.next(); - offset++; - message = 'Name is expected'; - } - break; - - case types.Percentage: - if (this.tokenType === types.Number) { - offset = this.tokenEnd; - message = 'Percent sign is expected'; - } - break; - } - - this.error(message, offset); - } - - this.next(); - }, - eatIdent(name) { - if (this.tokenType !== types.Ident || this.lookupValue(0, name) === false) { - this.error(`Identifier "${name}" is expected`); - } - - this.next(); - }, - eatDelim(code) { - if (!this.isDelim(code)) { - this.error(`Delim "${String.fromCharCode(code)}" is expected`); - } - - this.next(); - }, - - getLocation(start, end) { - if (needPositions) { - return locationMap.getLocationRange( - start, - end, - filename - ); - } - - return null; - }, - getLocationFromList(list) { - if (needPositions) { - const head = this.getFirstListNode(list); - const tail = this.getLastListNode(list); - return locationMap.getLocationRange( - head !== null ? head.loc.start.offset - locationMap.startOffset : this.tokenStart, - tail !== null ? tail.loc.end.offset - locationMap.startOffset : this.tokenStart, - filename - ); - } - - return null; - }, - - error(message, offset) { - const location = typeof offset !== 'undefined' && offset < source.length - ? locationMap.getLocation(offset) - : this.eof - ? locationMap.getLocation(utils.findWhiteSpaceStart(source, source.length - 1)) - : locationMap.getLocation(this.tokenStart); - - throw new SyntaxError.SyntaxError( - message || 'Unexpected input', - source, - location.offset, - location.line, - location.column, - locationMap.startLine, - locationMap.startColumn - ); - } - }); - - const parse = function(source_, options) { - source = source_; - options = options || {}; - - parser.setSource(source, index.tokenize); - locationMap.setSource( - source, - options.offset, - options.line, - options.column - ); - - filename = options.filename || '<unknown>'; - needPositions = Boolean(options.positions); - onParseError = typeof options.onParseError === 'function' ? options.onParseError : NOOP; - onParseErrorThrow = false; - - parser.parseAtrulePrelude = 'parseAtrulePrelude' in options ? Boolean(options.parseAtrulePrelude) : true; - parser.parseRulePrelude = 'parseRulePrelude' in options ? Boolean(options.parseRulePrelude) : true; - parser.parseValue = 'parseValue' in options ? Boolean(options.parseValue) : true; - parser.parseCustomProperty = 'parseCustomProperty' in options ? Boolean(options.parseCustomProperty) : false; - - const { context = 'default', onComment } = options; - - if (context in parser.context === false) { - throw new Error('Unknown context `' + context + '`'); - } - - if (typeof onComment === 'function') { - parser.forEachToken((type, start, end) => { - if (type === types.Comment) { - const loc = parser.getLocation(start, end); - const value = utils.cmpStr(source, end - 2, end, '*/') - ? source.slice(start + 2, end - 2) - : source.slice(start + 2, end); - - onComment(value, loc); - } - }); - } - - const ast = parser.context[context].call(parser, options); - - if (!parser.eof) { - parser.error(); - } - - return ast; - }; - - return Object.assign(parse, { - SyntaxError: SyntaxError.SyntaxError, - config: parser.config - }); -} - -exports.createParser = createParser; |