wrapper_type_info.h | Explore in Territory

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#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_WRAPPER_TYPE_INFO_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_WRAPPER_TYPE_INFO_H_

#include "base/check_op.h"
#include "base/memory/raw_ptr_exclusion.h"
#include "gin/public/wrapper_info.h"
#include "third_party/blink/renderer/platform/bindings/v8_interface_bridge_base.h"
#include "third_party/blink/renderer/platform/heap/visitor.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "v8/include/v8.h"

namespace blink {

class DOMWrapperWorld;
class ScriptWrappable;

static constexpr v8::CppHeapPointerTag kDOMWrappersTag = …;

// This struct provides a way to store a bunch of information that is helpful
// when unwrapping v8 objects. Each v8 bindings class has exactly one static
// WrapperTypeInfo member, so comparing pointers is a safe way to determine if
// types match.
struct PLATFORM_EXPORT WrapperTypeInfo final { … };

// `ToAnyScriptWrappable()` is only for use in cases where the subtype of
// ScriptWrappable is unknown and any subtype must be permitted.
// `ToScriptWrappable()` should be used whenever possible for stronger type
// enforcement.
// The return value may be null.
inline ScriptWrappable* ToAnyScriptWrappable(
    v8::Isolate* isolate,
    const v8::TracedReference<v8::Object>& wrapper) { … }

inline ScriptWrappable* ToAnyScriptWrappable(v8::Isolate* isolate,
                                             v8::Local<v8::Object> wrapper) { … }

PLATFORM_EXPORT const WrapperTypeInfo* ToWrapperTypeInfo(
    v8::Local<v8::Object> wrapper);

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_WRAPPER_TYPE_INFO_H_
chromium/third_party/blink/renderer/platform/bindings/wrapper_type_info.h
