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86 lines
2.3 KiB
86 lines
2.3 KiB
2 years ago
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import {
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Ident,
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String as StringToken,
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Number as NumberToken,
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Function as FunctionToken,
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Url,
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Hash,
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Dimension,
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Percentage,
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LeftParenthesis,
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LeftSquareBracket,
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Comma,
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Delim
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} from '../../tokenizer/index.js';
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const NUMBERSIGN = 0x0023; // U+0023 NUMBER SIGN (#)
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const ASTERISK = 0x002A; // U+002A ASTERISK (*)
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const PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
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const HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-)
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const SOLIDUS = 0x002F; // U+002F SOLIDUS (/)
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const U = 0x0075; // U+0075 LATIN SMALL LETTER U (u)
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export default function defaultRecognizer(context) {
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switch (this.tokenType) {
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case Hash:
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return this.Hash();
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case Comma:
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return this.Operator();
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case LeftParenthesis:
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return this.Parentheses(this.readSequence, context.recognizer);
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case LeftSquareBracket:
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return this.Brackets(this.readSequence, context.recognizer);
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case StringToken:
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return this.String();
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case Dimension:
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return this.Dimension();
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case Percentage:
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return this.Percentage();
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case NumberToken:
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return this.Number();
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case FunctionToken:
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return this.cmpStr(this.tokenStart, this.tokenEnd, 'url(')
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? this.Url()
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: this.Function(this.readSequence, context.recognizer);
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case Url:
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return this.Url();
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case Ident:
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// check for unicode range, it should start with u+ or U+
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if (this.cmpChar(this.tokenStart, U) &&
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this.cmpChar(this.tokenStart + 1, PLUSSIGN)) {
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return this.UnicodeRange();
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} else {
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return this.Identifier();
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}
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case Delim: {
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const code = this.charCodeAt(this.tokenStart);
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if (code === SOLIDUS ||
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code === ASTERISK ||
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code === PLUSSIGN ||
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code === HYPHENMINUS) {
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return this.Operator(); // TODO: replace with Delim
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}
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// TODO: produce a node with Delim node type
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if (code === NUMBERSIGN) {
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this.error('Hex or identifier is expected', this.tokenStart + 1);
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}
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break;
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}
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}
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};
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