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Allow items to be removed from the cache

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This commit is contained in:
Tim Schaub
2017-10-07 10:03:45 -06:00
parent ad5f21fa5c
commit 10af59bfce
2 changed files with 88 additions and 0 deletions
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28
src/ol/structs/lrucache.js
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@@ -116,6 +116,34 @@ ol.structs.LRUCache.prototype.get = function(key) {
};
/**
* Remove an entry from the cache.
* @param {string} key The entry key.
* @return {T} The removed entry.
*/
ol.structs.LRUCache.prototype.remove = function(key) {
var entry = this.entries_[key];
ol.asserts.assert(entry !== undefined, 15); // Tried to get a value for a key that does not exist in the cache
if (entry === this.newest_) {
this.newest_ = /** @type {ol.LRUCacheEntry} */ (entry.older);
if (this.newest_) {
this.newest_.newer = null;
}
} else if (entry === this.oldest_) {
this.oldest_ = /** @type {ol.LRUCacheEntry} */ (entry.newer);
if (this.oldest_) {
this.oldest_.older = null;
}
} else {
entry.newer.older = entry.older;
entry.older.newer = entry.newer;
}
delete this.entries_[key];
--this.count_;
return entry.value_;
};
/**
* @return {number} Count.
*/