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55 lines
1.3 KiB
55 lines
1.3 KiB
2 years ago
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import { WhiteSpace, Delim } from '../../tokenizer/index.js';
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const PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+)
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const SOLIDUS = 0x002F; // U+002F SOLIDUS (/)
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const GREATERTHANSIGN = 0x003E; // U+003E GREATER-THAN SIGN (>)
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const TILDE = 0x007E; // U+007E TILDE (~)
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export const name = 'Combinator';
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export const structure = {
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name: String
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};
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// + | > | ~ | /deep/
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export function parse() {
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const start = this.tokenStart;
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let name;
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switch (this.tokenType) {
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case WhiteSpace:
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name = ' ';
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break;
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case Delim:
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switch (this.charCodeAt(this.tokenStart)) {
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case GREATERTHANSIGN:
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case PLUSSIGN:
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case TILDE:
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this.next();
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break;
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case SOLIDUS:
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this.next();
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this.eatIdent('deep');
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this.eatDelim(SOLIDUS);
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break;
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default:
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this.error('Combinator is expected');
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}
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name = this.substrToCursor(start);
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break;
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}
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return {
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type: 'Combinator',
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loc: this.getLocation(start, this.tokenStart),
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name
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};
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}
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export function generate(node) {
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this.tokenize(node.name);
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}
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