82 lines
1.9 KiB
JavaScript
82 lines
1.9 KiB
JavaScript
import { jQuery } from "../core.js";
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import { rcomma } from "./var/rcomma.js";
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import { rleadingCombinator } from "./var/rleadingCombinator.js";
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import { rtrimCSS } from "../var/rtrimCSS.js";
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import { createCache } from "./createCache.js";
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import { selectorError } from "./selectorError.js";
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import { filterMatchExpr } from "./filterMatchExpr.js";
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var tokenCache = createCache();
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export function tokenize( selector, parseOnly ) {
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var matched, match, tokens, type,
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soFar, groups, preFilters,
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cached = tokenCache[ selector + " " ];
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if ( cached ) {
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return parseOnly ? 0 : cached.slice( 0 );
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}
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soFar = selector;
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groups = [];
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preFilters = jQuery.expr.preFilter;
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while ( soFar ) {
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// Comma and first run
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if ( !matched || ( match = rcomma.exec( soFar ) ) ) {
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if ( match ) {
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// Don't consume trailing commas as valid
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soFar = soFar.slice( match[ 0 ].length ) || soFar;
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}
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groups.push( ( tokens = [] ) );
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}
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matched = false;
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// Combinators
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if ( ( match = rleadingCombinator.exec( soFar ) ) ) {
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matched = match.shift();
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tokens.push( {
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value: matched,
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// Cast descendant combinators to space
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type: match[ 0 ].replace( rtrimCSS, " " )
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} );
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soFar = soFar.slice( matched.length );
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}
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// Filters
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for ( type in filterMatchExpr ) {
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if ( ( match = jQuery.expr.match[ type ].exec( soFar ) ) && ( !preFilters[ type ] ||
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( match = preFilters[ type ]( match ) ) ) ) {
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matched = match.shift();
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tokens.push( {
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value: matched,
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type: type,
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matches: match
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} );
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soFar = soFar.slice( matched.length );
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}
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}
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if ( !matched ) {
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break;
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}
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}
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// Return the length of the invalid excess
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// if we're just parsing
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// Otherwise, throw an error or return tokens
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if ( parseOnly ) {
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return soFar.length;
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}
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return soFar ?
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selectorError( selector ) :
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// Cache the tokens
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tokenCache( selector, groups ).slice( 0 );
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}
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