* Create key-value caches of limited size * @returns {function(string, object)} Returns the Object data after storing it on itself with * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) * deleting the oldest entry
()
| 871 | * deleting the oldest entry |
| 872 | */ |
| 873 | function createCache() { |
| 874 | var keys = []; |
| 875 | |
| 876 | function cache( key, value ) { |
| 877 | // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) |
| 878 | if ( keys.push( key + " " ) > Expr.cacheLength ) { |
| 879 | // Only keep the most recent entries |
| 880 | delete cache[ keys.shift() ]; |
| 881 | } |
| 882 | return (cache[ key + " " ] = value); |
| 883 | } |
| 884 | return cache; |
| 885 | } |
| 886 | |
| 887 | /** |
| 888 | * Mark a function for special use by Sizzle |