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V8ValueWireData.h
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132 lines (104 loc) · 5.05 KB
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
#pragma once
//-----------------------------------------------------------------------------
// V8Value::WireData
//-----------------------------------------------------------------------------
struct V8Value::WireData
{
// IMPORTANT: maintain bitwise equivalence with managed struct V8.SplitProxy.V8Value.WireData
Type Type;
Subtype Subtype;
union
{
Flags Flags;
int16_t SignBit;
};
union
{
int32_t Length;
int32_t IdentityHash;
};
union
{
int32_t Int32Value;
double DoubleValue;
const StdChar* pStringData;
const uint64_t* pBigIntData;
const V8ObjectHandle* pV8ObjectHandle;
void* pvHostObject;
};
};
//-----------------------------------------------------------------------------
static_assert(sizeof(V8Value::WireData) == 16, "The managed SplitProxy code assumes that sizeof(V8Value::WireData) is 16 on all platforms.");
static_assert(offsetof(V8Value::WireData, Type) == 0, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, Type) is 0 on all platforms.");
static_assert(offsetof(V8Value::WireData, Subtype) == 1, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, Subtype) is 1 on all platforms.");
static_assert(offsetof(V8Value::WireData, Flags) == 2, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, Flags) is 2 on all platforms.");
static_assert(offsetof(V8Value::WireData, SignBit) == 2, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, SignBit) is 2 on all platforms.");
static_assert(offsetof(V8Value::WireData, Length) == 4, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, Length) is 4 on all platforms.");
static_assert(offsetof(V8Value::WireData, IdentityHash) == 4, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, IdentityHash) is 4 on all platforms.");
static_assert(offsetof(V8Value::WireData, Int32Value) == 8, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, Int32Value) is 8 on all platforms.");
static_assert(offsetof(V8Value::WireData, DoubleValue) == 8, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, DoubleValue) is 8 on all platforms.");
static_assert(offsetof(V8Value::WireData, pStringData) == 8, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, pStringData) is 8 on all platforms.");
static_assert(offsetof(V8Value::WireData, pBigIntData) == 8, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, pBigIntData) is 8 on all platforms.");
static_assert(offsetof(V8Value::WireData, pV8ObjectHandle) == 8, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, pV8ObjectHandle) is 8 on all platforms.");
static_assert(offsetof(V8Value::WireData, pvHostObject) == 8, "The managed SplitProxy code assumes that offsetof(V8Value::WireData, pvHostObject) is 8 on all platforms.");
//-----------------------------------------------------------------------------
// V8Value::Decoded
//-----------------------------------------------------------------------------
struct V8Value::Decoded: WireData
{
// IMPORTANT: maintain bitwise equivalence with managed struct V8.SplitProxy.V8Value.Decoded
};
//-----------------------------------------------------------------------------
static_assert(sizeof(V8Value::Decoded) == sizeof(V8Value::WireData));
//-----------------------------------------------------------------------------
// V8Value::FastArg
//-----------------------------------------------------------------------------
struct V8Value::FastArg final: Decoded
{
// IMPORTANT: maintain bitwise equivalence with managed struct V8.SplitProxy.V8Value.FastArg
~FastArg()
{
switch (Type)
{
case Type::V8Object:
delete pV8ObjectHandle;
break;
default:
break;
}
}
};
//-----------------------------------------------------------------------------
static_assert(sizeof(V8Value::FastArg) == sizeof(V8Value::Decoded));
//-----------------------------------------------------------------------------
// V8Value::FastResult
//-----------------------------------------------------------------------------
struct V8Value::FastResult final: WireData
{
// IMPORTANT: maintain bitwise equivalence with managed struct V8.SplitProxy.V8Value.FastResult
FastResult()
{
Type = Type::Nonexistent;
}
~FastResult()
{
switch (Type)
{
case Type::String:
::Memory_Free(pStringData);
break;
case Type::BigInt:
::Memory_Free(pBigIntData);
break;
case Type::V8Object:
delete pV8ObjectHandle;
break;
default:
break;
}
}
};
//-----------------------------------------------------------------------------
static_assert(sizeof(V8Value::FastResult) == sizeof(V8Value::WireData));