( tokens )
| 1055 | } |
| 1056 | |
| 1057 | function matcherFromTokens( tokens ) { |
| 1058 | var checkContext, matcher, j, |
| 1059 | len = tokens.length, |
| 1060 | leadingRelative = jQuery.expr.relative[ tokens[ 0 ].type ], |
| 1061 | implicitRelative = leadingRelative || jQuery.expr.relative[ " " ], |
| 1062 | i = leadingRelative ? 1 : 0, |
| 1063 | |
| 1064 | // The foundational matcher ensures that elements are reachable from top-level context(s) |
| 1065 | matchContext = addCombinator( function( elem ) { |
| 1066 | return elem === checkContext; |
| 1067 | }, implicitRelative, true ), |
| 1068 | matchAnyContext = addCombinator( function( elem ) { |
| 1069 | return indexOf.call( checkContext, elem ) > -1; |
| 1070 | }, implicitRelative, true ), |
| 1071 | matchers = [ function( elem, context, xml ) { |
| 1072 | |
| 1073 | // Support: IE 11+ |
| 1074 | // IE sometimes throws a "Permission denied" error when strict-comparing |
| 1075 | // two documents; shallow comparisons work. |
| 1076 | // eslint-disable-next-line eqeqeq |
| 1077 | var ret = ( !leadingRelative && ( xml || context != outermostContext ) ) || ( |
| 1078 | ( checkContext = context ).nodeType ? |
| 1079 | matchContext( elem, context, xml ) : |
| 1080 | matchAnyContext( elem, context, xml ) ); |
| 1081 | |
| 1082 | // Avoid hanging onto element |
| 1083 | // (see https://github.com/jquery/sizzle/issues/299) |
| 1084 | checkContext = null; |
| 1085 | return ret; |
| 1086 | } ]; |
| 1087 | |
| 1088 | for ( ; i < len; i++ ) { |
| 1089 | if ( ( matcher = jQuery.expr.relative[ tokens[ i ].type ] ) ) { |
| 1090 | matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ]; |
| 1091 | } else { |
| 1092 | matcher = jQuery.expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches ); |
| 1093 | |
| 1094 | // Return special upon seeing a positional matcher |
| 1095 | if ( matcher[ jQuery.expando ] ) { |
| 1096 | |
| 1097 | // Find the next relative operator (if any) for proper handling |
| 1098 | j = ++i; |
| 1099 | for ( ; j < len; j++ ) { |
| 1100 | if ( jQuery.expr.relative[ tokens[ j ].type ] ) { |
| 1101 | break; |
| 1102 | } |
| 1103 | } |
| 1104 | return setMatcher( |
| 1105 | i > 1 && elementMatcher( matchers ), |
| 1106 | i > 1 && toSelector( |
| 1107 | |
| 1108 | // If the preceding token was a descendant combinator, insert an implicit any-element `*` |
| 1109 | tokens.slice( 0, i - 1 ) |
| 1110 | .concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } ) |
| 1111 | ).replace( rtrimCSS, "$1" ), |
| 1112 | matcher, |
| 1113 | i < j && matcherFromTokens( tokens.slice( i, j ) ), |
| 1114 | j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ), |
no test coverage detected