// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/core/css/random_caching_key.h"

#include <cstddef>

#include "third_party/blink/renderer/core/css/css_math_expression_node.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.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/string_builder.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"

namespace blink {

RandomCachingKey* RandomCachingKey::Create(
    const RandomCacheKey& random_cache_key,
    const Element* element) {
  DCHECK(!random_cache_key.IsFixed());
  DCHECK(random_cache_key.IsElementScoped());
  AtomicString name = random_cache_key.RandomNameForCaching();
  DCHECK(!name.IsNull());
  return MakeGarbageCollected<RandomCachingKey>(
      base::PassKey<RandomCachingKey>(), name, element);
}

bool RandomCachingKey::operator==(const RandomCachingKey& other) const {
  if (!element_ && !other.element_) {
    return name_ == other.name_;
  }
  if (!element_ || !other.element_) {
    return false;
  }
  return name_ == other.name_ && element_ == other.element_;
}

unsigned RandomCachingKey::GetHash() const {
  unsigned hash = blink::GetHash(name_);
  if (element_) {
    AddIntToHash(hash, blink::GetHash(element_.Get()));
  }
  return hash;
}

void RandomCachingKey::Trace(Visitor* visitor) const {
  visitor->Trace(element_);
}

}  // namespace blink