tree_ordered_map.h | Explore in Territory

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#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_DOM_TREE_ORDERED_MAP_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_DOM_TREE_ORDERED_MAP_H_

#include "base/dcheck_is_on.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_hash_map.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string_hash.h"
#include "third_party/blink/renderer/platform/wtf/text/string_impl.h"

namespace blink {

class Element;
class HTMLSlotElement;
class TreeScope;

// TreeOrderedMap is a map from keys to |Element|s, which allows multiple values
// per key, maintained in tree order per key. Tree walks are avoided when
// possible by retaining a cached, ordered array of matching nodes. Adding or
// removing an element for a given key often clears the cache, forcing a tree
// walk upon the next access.
class CORE_EXPORT TreeOrderedMap : public GarbageCollected<TreeOrderedMap> { … };

inline bool TreeOrderedMap::Contains(const AtomicString& id) const { … }

inline bool TreeOrderedMap::ContainsMultiple(const AtomicString& id) const { … }

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_DOM_TREE_ORDERED_MAP_H_
chromium/third_party/blink/renderer/core/dom/tree_ordered_map.h
