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runtimehandles.cpp
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3092 lines (2322 loc) · 91.2 KB
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#include "common.h"
#include "corhdr.h"
#include "runtimehandles.h"
#include "object.h"
#include "class.h"
#include "method.hpp"
#include "typehandle.h"
#include "field.h"
#include "siginfo.hpp"
#include "clsload.hpp"
#include "typestring.h"
#include "typeparse.h"
#include "holder.h"
#include "codeman.h"
#include "corhlpr.h"
#include "jitinterface.h"
#include "stackprobe.h"
#include "eeconfig.h"
#include "eehash.h"
#include "interoputil.h"
#include "typedesc.h"
#include "virtualcallstub.h"
#include "contractimpl.h"
#include "dynamicmethod.h"
#include "peimagelayout.inl"
#include "eventtrace.h"
#include "invokeutil.h"
FCIMPL3(FC_BOOL_RET, MdUtf8String::EqualsCaseSensitive, LPCUTF8 szLhs, LPCUTF8 szRhs, INT32 stringNumBytes)
{
CONTRACTL {
FCALL_CHECK;
PRECONDITION(CheckPointer(szLhs));
PRECONDITION(CheckPointer(szRhs));
}
CONTRACTL_END;
// Important: the string in pSsz isn't null terminated so the length must be used
// when performing operations on the string.
// At this point, both the left and right strings are guaranteed to have the
// same length.
FC_RETURN_BOOL(strncmp(szLhs, szRhs, stringNumBytes) == 0);
}
FCIMPLEND
BOOL QCALLTYPE MdUtf8String::EqualsCaseInsensitive(LPCUTF8 szLhs, LPCUTF8 szRhs, INT32 stringNumBytes)
{
QCALL_CONTRACT;
// Important: the string in pSsz isn't null terminated so the length must be used
// when performing operations on the string.
BOOL fStringsEqual = FALSE;
BEGIN_QCALL;
_ASSERTE(CheckPointer(szLhs));
_ASSERTE(CheckPointer(szRhs));
// At this point, both the left and right strings are guaranteed to have the
// same length.
StackSString lhs(SString::Utf8, szLhs, stringNumBytes);
StackSString rhs(SString::Utf8, szRhs, stringNumBytes);
// We can use SString for simple case insensitive compares
fStringsEqual = lhs.EqualsCaseInsensitive(rhs);
END_QCALL;
return fStringsEqual;
}
ULONG QCALLTYPE MdUtf8String::HashCaseInsensitive(LPCUTF8 sz, INT32 stringNumBytes)
{
QCALL_CONTRACT;
// Important: the string in pSsz isn't null terminated so the length must be used
// when performing operations on the string.
ULONG hashValue = 0;
BEGIN_QCALL;
StackSString str(SString::Utf8, sz, stringNumBytes);
hashValue = str.HashCaseInsensitive();
END_QCALL;
return hashValue;
}
static BOOL CheckCAVisibilityFromDecoratedType(MethodTable* pCAMT, MethodDesc* pCACtor, MethodTable* pDecoratedMT, Module* pDecoratedModule)
{
CONTRACTL
{
THROWS;
GC_TRIGGERS;
MODE_ANY;
PRECONDITION(CheckPointer(pCAMT));
PRECONDITION(CheckPointer(pCACtor, NULL_OK));
PRECONDITION(CheckPointer(pDecoratedMT, NULL_OK));
PRECONDITION(CheckPointer(pDecoratedModule));
}
CONTRACTL_END;
DWORD dwAttr = mdPublic;
if (pCACtor != NULL)
{
_ASSERTE(pCACtor->IsCtor());
dwAttr = pCACtor->GetAttrs();
}
StaticAccessCheckContext accessContext(NULL, pDecoratedMT, pDecoratedModule->GetAssembly());
return ClassLoader::CanAccess(
&accessContext,
pCAMT,
pCAMT->GetAssembly(),
dwAttr,
pCACtor,
NULL,
*AccessCheckOptions::s_pNormalAccessChecks);
}
BOOL QCALLTYPE RuntimeMethodHandle::IsCAVisibleFromDecoratedType(
EnregisteredTypeHandle targetTypeHandle,
MethodDesc * pTargetCtor,
EnregisteredTypeHandle sourceTypeHandle,
QCall::ModuleHandle sourceModuleHandle)
{
QCALL_CONTRACT;
BOOL bResult = TRUE;
BEGIN_QCALL;
TypeHandle sourceHandle = TypeHandle::FromPtr(sourceTypeHandle);
TypeHandle targetHandle = TypeHandle::FromPtr(targetTypeHandle);
_ASSERTE((sourceHandle.IsNull() || !sourceHandle.IsTypeDesc()) &&
!targetHandle.IsNull() &&
!targetHandle.IsTypeDesc());
if (sourceHandle.IsTypeDesc() ||
targetHandle.IsNull() ||
targetHandle.IsTypeDesc())
COMPlusThrowArgumentNull(NULL, W("Arg_InvalidHandle"));
bResult = CheckCAVisibilityFromDecoratedType(targetHandle.AsMethodTable(), pTargetCtor, sourceHandle.AsMethodTable(), sourceModuleHandle);
END_QCALL;
return bResult;
}
// static
NOINLINE static ReflectClassBaseObject* GetRuntimeTypeHelper(LPVOID __me, TypeHandle typeHandle, OBJECTREF keepAlive)
{
FC_INNER_PROLOG_NO_ME_SETUP();
if (typeHandle.AsPtr() == NULL)
return NULL;
// RuntimeTypeHandle::GetRuntimeType has picked off the most common case, but does not cover array types.
// Before we do the really heavy weight option of setting up a helper method frame, check if we have to.
OBJECTREF refType = typeHandle.GetManagedClassObjectFast();
if (refType != NULL)
return (ReflectClassBaseObject*)OBJECTREFToObject(refType);
HELPER_METHOD_FRAME_BEGIN_RET_ATTRIB_1(Frame::FRAME_ATTR_EXACT_DEPTH|Frame::FRAME_ATTR_CAPTURE_DEPTH_2, keepAlive);
refType = typeHandle.GetManagedClassObject();
HELPER_METHOD_FRAME_END();
FC_INNER_EPILOG();
return (ReflectClassBaseObject*)OBJECTREFToObject(refType);
}
#define RETURN_CLASS_OBJECT(typeHandle, keepAlive) FC_INNER_RETURN(ReflectClassBaseObject*, GetRuntimeTypeHelper(__me, typeHandle, keepAlive))
NOINLINE ReflectModuleBaseObject* GetRuntimeModuleHelper(LPVOID __me, Module *pModule, OBJECTREF keepAlive)
{
FC_INNER_PROLOG_NO_ME_SETUP();
if (pModule == NULL)
return NULL;
DomainFile * pDomainFile = pModule->FindDomainFile(GetAppDomain());
OBJECTREF refModule = (pDomainFile != NULL) ? pDomainFile->GetExposedModuleObjectIfExists() : NULL;
if(refModule != NULL)
return (ReflectModuleBaseObject*)OBJECTREFToObject(refModule);
HELPER_METHOD_FRAME_BEGIN_RET_ATTRIB_1(Frame::FRAME_ATTR_EXACT_DEPTH|Frame::FRAME_ATTR_CAPTURE_DEPTH_2, keepAlive);
refModule = pModule->GetExposedObject();
HELPER_METHOD_FRAME_END();
FC_INNER_EPILOG();
return (ReflectModuleBaseObject*)OBJECTREFToObject(refModule);
}
NOINLINE AssemblyBaseObject* GetRuntimeAssemblyHelper(LPVOID __me, DomainAssembly *pAssembly, OBJECTREF keepAlive)
{
FC_INNER_PROLOG_NO_ME_SETUP();
if (pAssembly == NULL)
return NULL;
OBJECTREF refAssembly = (pAssembly != NULL) ? pAssembly->GetExposedAssemblyObjectIfExists() : NULL;
if(refAssembly != NULL)
return (AssemblyBaseObject*)OBJECTREFToObject(refAssembly);
HELPER_METHOD_FRAME_BEGIN_RET_ATTRIB_1(Frame::FRAME_ATTR_EXACT_DEPTH|Frame::FRAME_ATTR_CAPTURE_DEPTH_2, keepAlive);
refAssembly = pAssembly->GetExposedAssemblyObject();
HELPER_METHOD_FRAME_END();
FC_INNER_EPILOG();
return (AssemblyBaseObject*)OBJECTREFToObject(refAssembly);
}
// This is the routine that is called by the 'typeof()' operator in C#. It is one of the most commonly used
// reflection operations. This call should be optimized away in nearly all situations
FCIMPL1_V(ReflectClassBaseObject*, RuntimeTypeHandle::GetTypeFromHandle, FCALLRuntimeTypeHandle th)
{
FCALL_CONTRACT;
FCUnique(0x31);
return FCALL_RTH_TO_REFLECTCLASS(th);
}
FCIMPLEND
FCIMPL1(ReflectClassBaseObject*, RuntimeTypeHandle::GetRuntimeType, EnregisteredTypeHandle th)
{
FCALL_CONTRACT;
TypeHandle typeHandle = TypeHandle::FromPtr(th);
_ASSERTE(CheckPointer(typeHandle.AsPtr(), NULL_OK));
if (typeHandle.AsPtr()!= NULL)
{
if (!typeHandle.IsTypeDesc())
{
OBJECTREF typePtr = typeHandle.AsMethodTable()->GetManagedClassObjectIfExists();
if (typePtr != NULL)
{
return (ReflectClassBaseObject*)OBJECTREFToObject(typePtr);
}
}
}
else
return NULL;
RETURN_CLASS_OBJECT(typeHandle, NULL);
}
FCIMPLEND
FCIMPL1_V(EnregisteredTypeHandle, RuntimeTypeHandle::GetValueInternal, FCALLRuntimeTypeHandle RTH)
{
FCALL_CONTRACT;
if (FCALL_RTH_TO_REFLECTCLASS(RTH) == NULL)
return 0;
return FCALL_RTH_TO_REFLECTCLASS(RTH) ->GetType().AsPtr();
}
FCIMPLEND
// TypeEqualsHelper and TypeNotEqualsHelper are almost identical.
// Unfortunately we cannot combime them because they need to hardcode the caller's name
NOINLINE static BOOL TypeEqualSlow(OBJECTREF refL, OBJECTREF refR, LPVOID __me)
{
BOOL ret = FALSE;
FC_INNER_PROLOG_NO_ME_SETUP();
_ASSERTE(refL != NULL && refR != NULL);
HELPER_METHOD_FRAME_BEGIN_RET_ATTRIB_2(Frame::FRAME_ATTR_EXACT_DEPTH|Frame::FRAME_ATTR_CAPTURE_DEPTH_2, refL, refR);
MethodDescCallSite TypeEqualsMethod(METHOD__OBJECT__EQUALS, &refL);
ARG_SLOT args[] =
{
ObjToArgSlot(refL),
ObjToArgSlot(refR)
};
ret = TypeEqualsMethod.Call_RetBool(args);
HELPER_METHOD_FRAME_END();
FC_INNER_EPILOG();
return ret;
}
#include <optsmallperfcritical.h>
FCIMPL2(FC_BOOL_RET, RuntimeTypeHandle::TypeEQ, Object* left, Object* right)
{
FCALL_CONTRACT;
OBJECTREF refL = (OBJECTREF)left;
OBJECTREF refR = (OBJECTREF)right;
if (refL == refR)
{
FC_RETURN_BOOL(TRUE);
}
if (!refL || !refR)
{
FC_RETURN_BOOL(FALSE);
}
if ((refL->GetMethodTable() == g_pRuntimeTypeClass || refR->GetMethodTable() == g_pRuntimeTypeClass))
{
// Quick path for negative common case
FC_RETURN_BOOL(FALSE);
}
// The fast path didn't get us the result
// Let's try the slow path: refL.Equals(refR);
FC_INNER_RETURN(FC_BOOL_RET, (FC_BOOL_RET)(!!TypeEqualSlow(refL, refR, __me)));
}
FCIMPLEND
FCIMPL2(FC_BOOL_RET, RuntimeTypeHandle::TypeNEQ, Object* left, Object* right)
{
FCALL_CONTRACT;
OBJECTREF refL = (OBJECTREF)left;
OBJECTREF refR = (OBJECTREF)right;
if (refL == refR)
{
FC_RETURN_BOOL(FALSE);
}
if (!refL || !refR)
{
FC_RETURN_BOOL(TRUE);
}
if ((refL->GetMethodTable() == g_pRuntimeTypeClass || refR->GetMethodTable() == g_pRuntimeTypeClass))
{
// Quick path for negative common case
FC_RETURN_BOOL(TRUE);
}
// The fast path didn't get us the result
// Let's try the slow path: refL.Equals(refR);
FC_INNER_RETURN(FC_BOOL_RET, (FC_BOOL_RET)(!TypeEqualSlow(refL, refR, __me)));
}
FCIMPLEND
#include <optdefault.h>
#ifdef FEATURE_COMINTEROP
FCIMPL1(FC_BOOL_RET, RuntimeTypeHandle::IsWindowsRuntimeObjectType, ReflectClassBaseObject *rtTypeUNSAFE)
{
FCALL_CONTRACT;
BOOL isWindowsRuntimeType = FALSE;
TypeHandle typeHandle = rtTypeUNSAFE->GetType();
MethodTable *pMT = typeHandle.GetMethodTable();
if (pMT != NULL)
{
isWindowsRuntimeType = pMT->IsWinRTObjectType();
}
FC_RETURN_BOOL(isWindowsRuntimeType);
}
FCIMPLEND
FCIMPL1(FC_BOOL_RET, RuntimeTypeHandle::IsTypeExportedToWindowsRuntime, ReflectClassBaseObject *rtTypeUNSAFE)
{
FCALL_CONTRACT;
BOOL isExportedToWinRT = FALSE;
TypeHandle typeHandle = rtTypeUNSAFE->GetType();
MethodTable *pMT = typeHandle.GetMethodTable();
if (pMT != NULL)
{
isExportedToWinRT = pMT->IsExportedToWinRT();
}
FC_RETURN_BOOL(isExportedToWinRT);
}
FCIMPLEND
#endif // FEATURE_COMINTEROP
NOINLINE static MethodDesc * RestoreMethodHelper(MethodDesc * pMethod, LPVOID __me)
{
FC_INNER_PROLOG_NO_ME_SETUP();
HELPER_METHOD_FRAME_BEGIN_RET_0();
pMethod->CheckRestore();
HELPER_METHOD_FRAME_END();
FC_INNER_EPILOG();
return pMethod;
}
FCIMPL1(MethodDesc *, RuntimeTypeHandle::GetFirstIntroducedMethod, ReflectClassBaseObject *pTypeUNSAFE) {
CONTRACTL {
FCALL_CHECK;
PRECONDITION(CheckPointer(pTypeUNSAFE));
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
TypeHandle typeHandle = refType->GetType();
if (typeHandle.IsGenericVariable())
FCThrowRes(kArgumentException, W("Arg_InvalidHandle"));
if (typeHandle.IsTypeDesc()) {
if (!typeHandle.IsArray())
return NULL;
}
MethodTable* pMT = typeHandle.GetMethodTable();
if (pMT == NULL)
return NULL;
MethodDesc* pMethod = MethodTable::IntroducedMethodIterator::GetFirst(pMT);
// The only method that can show up here unrestored is instantiated methods. Check for it before performing the expensive IsRestored() check.
if (pMethod != NULL && pMethod->GetClassification() == mcInstantiated && !pMethod->IsRestored()) {
FC_INNER_RETURN(MethodDesc *, RestoreMethodHelper(pMethod, __me));
}
_ASSERTE(pMethod == NULL || pMethod->IsRestored());
return pMethod;
}
FCIMPLEND
#include <optsmallperfcritical.h>
FCIMPL1(void, RuntimeTypeHandle::GetNextIntroducedMethod, MethodDesc ** ppMethod) {
CONTRACTL {
FCALL_CHECK;
PRECONDITION(CheckPointer(ppMethod));
PRECONDITION(CheckPointer(*ppMethod));
}
CONTRACTL_END;
MethodDesc *pMethod = MethodTable::IntroducedMethodIterator::GetNext(*ppMethod);
*ppMethod = pMethod;
if (pMethod != NULL && pMethod->GetClassification() == mcInstantiated && !pMethod->IsRestored()) {
FC_INNER_RETURN_VOID(RestoreMethodHelper(pMethod, __me));
}
_ASSERTE(pMethod == NULL || pMethod->IsRestored());
}
FCIMPLEND
#include <optdefault.h>
FCIMPL1(INT32, RuntimeTypeHandle::GetCorElementType, ReflectClassBaseObject *pTypeUNSAFE) {
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
if (refType == NULL)
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
return refType->GetType().GetSignatureCorElementType();
}
FCIMPLEND
FCIMPL1(AssemblyBaseObject*, RuntimeTypeHandle::GetAssembly, ReflectClassBaseObject *pTypeUNSAFE) {
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
if (refType == NULL)
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
DomainFile *pDomainFile = NULL;
Module *pModule = refType->GetType().GetAssembly()->GetManifestModule();
pDomainFile = pModule->FindDomainFile(GetAppDomain());
#ifdef FEATURE_LOADER_OPTIMIZATION
if (pDomainFile == NULL)
{
HELPER_METHOD_FRAME_BEGIN_RET_1(refType);
pDomainFile = GetAppDomain()->LoadDomainNeutralModuleDependency(pModule, FILE_LOADED);
HELPER_METHOD_FRAME_END();
}
#endif // FEATURE_LOADER_OPTIMIZATION
FC_RETURN_ASSEMBLY_OBJECT((DomainAssembly *)pDomainFile, refType);
}
FCIMPLEND
FCIMPL1(FC_BOOL_RET, RuntimeFieldHandle::AcquiresContextFromThis, FieldDesc *pField)
{
CONTRACTL {
FCALL_CHECK;
PRECONDITION(CheckPointer(pField));
}
CONTRACTL_END;
FC_RETURN_BOOL(pField->IsSharedByGenericInstantiations());
}
FCIMPLEND
FCIMPL1(ReflectModuleBaseObject*, RuntimeTypeHandle::GetModule, ReflectClassBaseObject *pTypeUNSAFE) {
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
Module *result;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
if (refType == NULL)
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
BEGIN_SO_INTOLERANT_CODE_NOTHROW(GetThread(), FCThrow(kStackOverflowException));
result = refType->GetType().GetModule();
END_SO_INTOLERANT_CODE;
FC_RETURN_MODULE_OBJECT(result, refType);
}
FCIMPLEND
FCIMPL1(ReflectClassBaseObject *, RuntimeTypeHandle::GetBaseType, ReflectClassBaseObject *pTypeUNSAFE) {
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
if (refType == NULL)
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
TypeHandle typeHandle = refType->GetType();
if (typeHandle.IsGenericVariable())
FCThrowRes(kArgumentException, W("Arg_InvalidHandle"));
if (typeHandle.IsTypeDesc()) {
if (!typeHandle.IsArray())
return NULL;
}
RETURN_CLASS_OBJECT(typeHandle.GetParent(), refType);
}
FCIMPLEND
FCIMPL1(ReflectClassBaseObject *, RuntimeTypeHandle::GetElementType, ReflectClassBaseObject *pTypeUNSAFE) {
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
if (refType == NULL)
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
TypeHandle typeHandle = refType->GetType();
if (!typeHandle.IsTypeDesc())
return 0;
if (typeHandle.IsGenericVariable())
return 0;
TypeHandle typeReturn;
if (typeHandle.IsArray())
typeReturn = typeHandle.AsArray()->GetArrayElementTypeHandle();
else
typeReturn = typeHandle.AsTypeDesc()->GetTypeParam();
RETURN_CLASS_OBJECT(typeReturn, refType);
}
FCIMPLEND
FCIMPL1(INT32, RuntimeTypeHandle::GetArrayRank, ReflectClassBaseObject *pTypeUNSAFE) {
CONTRACTL {
FCALL_CHECK;
PRECONDITION(CheckPointer(pTypeUNSAFE));
PRECONDITION(pTypeUNSAFE->GetType().IsArray());
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
return (INT32)refType->GetType().AsArray()->GetRank();
}
FCIMPLEND
FCIMPL1(INT32, RuntimeTypeHandle::GetNumVirtuals, ReflectClassBaseObject *pTypeUNSAFE) {
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
if (refType == NULL)
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
TypeHandle typeHandle = refType->GetType();
if (typeHandle.IsGenericVariable())
FCThrowRes(kArgumentException, W("Arg_InvalidHandle"));
MethodTable *pMT = typeHandle.GetMethodTable();
if (pMT)
return (INT32)pMT->GetNumVirtuals();
else
return 0; //REVIEW: should this return the number of methods in Object?
}
FCIMPLEND
FCIMPL2(MethodDesc *, RuntimeTypeHandle::GetMethodAt, ReflectClassBaseObject *pTypeUNSAFE, INT32 slot) {
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
if (refType == NULL)
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
TypeHandle typeHandle = refType->GetType();
MethodDesc* pRetMethod = NULL;
if (typeHandle.IsGenericVariable())
FCThrowRes(kArgumentException, W("Arg_InvalidHandle"));
if (slot < 0 || slot >= (INT32)typeHandle.GetMethodTable()->GetNumVirtuals())
FCThrowRes(kArgumentException, W("Arg_ArgumentOutOfRangeException"));
HELPER_METHOD_FRAME_BEGIN_RET_1(refType);
pRetMethod = typeHandle.GetMethodTable()->GetMethodDescForSlot((DWORD)slot);
HELPER_METHOD_FRAME_END();
return pRetMethod;
}
FCIMPLEND
FCIMPL3(FC_BOOL_RET, RuntimeTypeHandle::GetFields, ReflectClassBaseObject *pTypeUNSAFE, INT32 **result, INT32 *pCount) {
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
if (refType == NULL)
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
TypeHandle typeHandle = refType->GetType();
if (!pCount || !result)
FCThrow(kArgumentNullException);
if (typeHandle.IsGenericVariable())
FCThrowRes(kArgumentException, W("Arg_InvalidHandle"));
if (typeHandle.IsTypeDesc()) {
*pCount = 0;
FC_RETURN_BOOL(TRUE);
}
MethodTable *pMT= typeHandle.GetMethodTable();
if (!pMT)
FCThrowRes(kArgumentException, W("Arg_InvalidHandle"));
BOOL retVal = FALSE;
HELPER_METHOD_FRAME_BEGIN_RET_1(refType);
// <TODO>Check this approximation - we may be losing exact type information </TODO>
ApproxFieldDescIterator fdIterator(pMT, ApproxFieldDescIterator::ALL_FIELDS);
INT32 count = (INT32)fdIterator.Count();
if (count > *pCount)
{
*pCount = count;
}
else
{
for(INT32 i = 0; i < count; i ++)
result[i] = (INT32*)fdIterator.Next();
*pCount = count;
retVal = TRUE;
}
HELPER_METHOD_FRAME_END();
FC_RETURN_BOOL(retVal);
}
FCIMPLEND
void QCALLTYPE RuntimeMethodHandle::ConstructInstantiation(MethodDesc * pMethod, DWORD format, QCall::StringHandleOnStack retString)
{
QCALL_CONTRACT;
BEGIN_QCALL;
StackSString ss;
TypeString::AppendInst(ss, pMethod->LoadMethodInstantiation(), format);
retString.Set(ss);
END_QCALL;
}
void QCALLTYPE RuntimeTypeHandle::ConstructName(EnregisteredTypeHandle pTypeHandle, DWORD format, QCall::StringHandleOnStack retString)
{
QCALL_CONTRACT;
BEGIN_QCALL;
StackSString ss;
TypeString::AppendType(ss, TypeHandle::FromPtr(pTypeHandle), format);
retString.Set(ss);
END_QCALL;
}
PTRARRAYREF CopyRuntimeTypeHandles(TypeHandle * prgTH, FixupPointer<TypeHandle> * prgTH2, INT32 numTypeHandles, BinderClassID arrayElemType)
{
CONTRACTL {
THROWS;
GC_TRIGGERS;
MODE_COOPERATIVE;
}
CONTRACTL_END;
PTRARRAYREF refReturn = NULL;
PTRARRAYREF refArray = NULL;
if (numTypeHandles == 0)
return NULL;
_ASSERTE((prgTH != NULL) || (prgTH2 != NULL));
if (prgTH != NULL)
{
_ASSERTE(prgTH2 == NULL);
}
GCPROTECT_BEGIN(refArray);
TypeHandle thRuntimeType = TypeHandle(MscorlibBinder::GetClass(arrayElemType));
TypeHandle arrayHandle = ClassLoader::LoadArrayTypeThrowing(thRuntimeType, ELEMENT_TYPE_SZARRAY);
refArray = (PTRARRAYREF)AllocateArrayEx(arrayHandle, &numTypeHandles, 1);
for (INT32 i = 0; i < numTypeHandles; i++)
{
TypeHandle th;
if (prgTH != NULL)
th = prgTH[i];
else
th = prgTH2[i].GetValue();
OBJECTREF refType = th.GetManagedClassObject();
refArray->SetAt(i, refType);
}
refReturn = refArray;
GCPROTECT_END();
return refReturn;
}
void QCALLTYPE RuntimeTypeHandle::GetConstraints(EnregisteredTypeHandle pTypeHandle, QCall::ObjectHandleOnStack retTypeArray)
{
QCALL_CONTRACT;
TypeHandle* constraints = NULL;
BEGIN_QCALL;
TypeHandle typeHandle = TypeHandle::FromPtr(pTypeHandle);
if (!typeHandle.IsGenericVariable())
COMPlusThrow(kArgumentException, W("Arg_InvalidHandle"));
TypeVarTypeDesc* pGenericVariable = typeHandle.AsGenericVariable();
DWORD dwCount;
constraints = pGenericVariable->GetConstraints(&dwCount);
GCX_COOP();
retTypeArray.Set(CopyRuntimeTypeHandles(constraints, NULL, dwCount, CLASS__TYPE));
END_QCALL;
return;
}
FCIMPL1(PtrArray*, RuntimeTypeHandle::GetInterfaces, ReflectClassBaseObject *pTypeUNSAFE) {
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
if (refType == NULL)
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
TypeHandle typeHandle = refType->GetType();
if (typeHandle.IsGenericVariable())
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
INT32 ifaceCount = 0;
PTRARRAYREF refRetVal = NULL;
HELPER_METHOD_FRAME_BEGIN_RET_2(refRetVal, refType);
{
if (typeHandle.IsTypeDesc())
{
if (typeHandle.IsArray())
{
ifaceCount = typeHandle.GetMethodTable()->GetNumInterfaces();
}
else
{
ifaceCount = 0;
}
}
else
{
ifaceCount = typeHandle.GetMethodTable()->GetNumInterfaces();
}
// Allocate the array
if (ifaceCount > 0)
{
TypeHandle arrayHandle = ClassLoader::LoadArrayTypeThrowing(TypeHandle(g_pRuntimeTypeClass), ELEMENT_TYPE_SZARRAY);
refRetVal = (PTRARRAYREF)AllocateArrayEx(arrayHandle, &ifaceCount, 1);
// populate type array
UINT i = 0;
MethodTable::InterfaceMapIterator it = typeHandle.GetMethodTable()->IterateInterfaceMap();
while (it.Next())
{
OBJECTREF refInterface = it.GetInterface()->GetManagedClassObject();
refRetVal->SetAt(i, refInterface);
_ASSERTE(refRetVal->GetAt(i) != NULL);
i++;
}
}
}
HELPER_METHOD_FRAME_END();
return (PtrArray*)OBJECTREFToObject(refRetVal);
}
FCIMPLEND
FCIMPL1(INT32, RuntimeTypeHandle::GetAttributes, ReflectClassBaseObject *pTypeUNSAFE) {
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
if (refType == NULL)
FCThrowRes(kArgumentNullException, W("Arg_InvalidHandle"));
TypeHandle typeHandle = refType->GetType();
if (typeHandle.IsTypeDesc()) {
if (typeHandle.IsGenericVariable()) {
return tdPublic;
}
if (!typeHandle.IsArray())
return 0;
}
#ifdef FEATURE_COMINTEROP
// __ComObject types are always public.
if (IsComObjectClass(typeHandle))
return (typeHandle.GetMethodTable()->GetAttrClass() & tdVisibilityMask) | tdPublic;
#endif // FEATURE_COMINTEROP
INT32 ret = 0;
ret = (INT32)typeHandle.GetMethodTable()->GetAttrClass();
return ret;
}
FCIMPLEND
FCIMPL1(FC_BOOL_RET, RuntimeTypeHandle::IsValueType, ReflectClassBaseObject *pTypeUNSAFE)
{
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
_ASSERTE(refType != NULL);
TypeHandle typeHandle = refType->GetType();
FC_RETURN_BOOL(typeHandle.IsValueType());
}
FCIMPLEND;
FCIMPL1(FC_BOOL_RET, RuntimeTypeHandle::IsInterface, ReflectClassBaseObject *pTypeUNSAFE)
{
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
_ASSERTE(refType != NULL);
TypeHandle typeHandle = refType->GetType();
FC_RETURN_BOOL(typeHandle.IsInterface());
}
FCIMPLEND;
FCIMPL1(FC_BOOL_RET, RuntimeTypeHandle::IsByRefLike, ReflectClassBaseObject *pTypeUNSAFE)
{
CONTRACTL {
FCALL_CHECK;
}
CONTRACTL_END;
REFLECTCLASSBASEREF refType = (REFLECTCLASSBASEREF)ObjectToOBJECTREF(pTypeUNSAFE);
_ASSERTE(refType != NULL);
TypeHandle typeHandle = refType->GetType();
FC_RETURN_BOOL(typeHandle.IsByRefLike());
}
FCIMPLEND
BOOL
QCALLTYPE
RuntimeTypeHandle::IsVisible(
EnregisteredTypeHandle pTypeHandle)
{
CONTRACTL
{
QCALL_CHECK;
}
CONTRACTL_END;
BOOL fIsExternallyVisible = FALSE;
BEGIN_QCALL;
TypeHandle typeHandle = TypeHandle::FromPtr(pTypeHandle);
_ASSERTE(!typeHandle.IsNull());