public SignatureInfoMatchTarget(TypeInfo interfaceTypeInfo, int functionIndex,
ElemDesc elemDesc, int parameterIndex)
{
if (interfaceTypeInfo == null) throw new ArgumentNullException(nameof(interfaceTypeInfo));
m_interfaceTypeInfo = interfaceTypeInfo;
m_functionIndex = functionIndex;
m_funcDesc = interfaceTypeInfo.GetFuncDesc(m_functionIndex);
m_elemDesc = elemDesc;
m_parameterIndex = parameterIndex;
if (m_parameterIndex == 0)
{
m_name = "return";
}
else
{
// the name of the parameter.
string[] signatureNames = m_interfaceTypeInfo.GetNames(m_funcDesc.memid,
m_funcDesc.cParams + 1);
m_name = signatureNames[m_parameterIndex];
if (m_name == null || m_name.Trim().Equals(""))
m_name = "_unnamed_arg_" + m_parameterIndex;
}
// NativeParentFunctionName
m_nativeParentFunctionName =
m_interfaceTypeInfo.GetDocumentation(m_funcDesc.memid);
// NativeSignature
m_nativeSignature = (new TlbType2String(interfaceTypeInfo, m_elemDesc.tdesc)).GetTypeString();
}
public ElemDesc(FuncDesc funcdesc, int index)
{
m_parent = funcdesc;
IntPtr pParam = funcdesc.m_funcdesc.lprgelemdescParam;
IntPtr pElemDesc = Utils.MovePointer(pParam, index * Marshal.SizeOf(typeof(ELEMDESC)));
Init((ELEMDESC)Marshal.PtrToStructure(pElemDesc, typeof(ELEMDESC)));
}
public FunctionInfoMatchTarget(TypeInfo parentTypeInfo, int index)
{
if (parentTypeInfo == null) throw new ArgumentNullException(nameof(parentTypeInfo));
m_interfaceTypeInfo = parentTypeInfo;
m_index = index;
m_funcDesc = parentTypeInfo.GetFuncDesc(m_index);
m_nativeParentTypeName = m_interfaceTypeInfo.GetDocumentation();
}
public ElemDesc(FuncDesc funcdesc, ELEMDESC elemdesc)
{
m_parent = funcdesc;
Init(elemdesc);
}
public ElemDesc(FuncDesc funcdesc, int index)
{
if (funcdesc == null) throw new ArgumentNullException(nameof(funcdesc));
m_parent = funcdesc;
IntPtr pParam = funcdesc.m_funcdesc.lprgelemdescParam;
IntPtr pElemDesc = Utils.MovePointer(pParam, index * Marshal.SizeOf(typeof(ELEMDESC)));
Init( (ELEMDESC) Marshal.PtrToStructure(pElemDesc, typeof(ELEMDESC)));
}
public ElemDesc(FuncDesc funcdesc, ELEMDESC elemdesc)
{
m_parent = funcdesc;
Init(elemdesc);
}
/// <summary>
/// Get the return type converter for the function
/// </summary>
public static TypeConverter GetReturnType(InterfaceInfo info, InterfaceMemberInfo memInfo,
FuncDesc func, bool isNewEnumMember, TypeConverter returnConverterOverride,
List<TypeConverter> parameterConverterOverrideList, out ReturnKind kind,
out bool isStandardOleCall, out int returnArgId)
{
TypeConverter retType = null;
returnArgId = -1;
kind = ReturnKind.ReturnValue;
isStandardOleCall = false;
TypeDesc retTypeDesc = func.elemdescFunc.tdesc;
// If /preservesig is specified, we perform the PreserveSig transformation, except for dispatch functions.
// Because they are not affected by PreserveSig attribute.
if ((!func.IsDispatch) &&
(info.ConverterInfo.Settings.m_isPreserveSig ||
IsPreserveSigOverride(info, memInfo.Index)))
{
if (returnConverterOverride != null)
{
retType = returnConverterOverride;
kind = ReturnKind.ReturnValue;
}
else if (retTypeDesc.vt == (int)VarEnum.VT_VOID)
{
retType = s_voidTypeConverter;
kind = ReturnKind.NoReturn;
}
else
{
retType = new TypeConverter(info.ConverterInfo, info.RefTypeInfo, func.elemdescFunc.tdesc, isNewEnumMember, ConversionType.ReturnValue);
kind = ReturnKind.ReturnValue;
}
return retType;
}
// Inspect the return value
// If the return is HRESULT and PreserveSig switch is not specified, we will do the HRESULT transformation
// Otherwise, stick to the original return value and use PreserveSigAttribute
if (retTypeDesc.vt == (int)VarEnum.VT_HRESULT)
{
isStandardOleCall = true;
}
else
{
if (retTypeDesc.vt != (int)VarEnum.VT_VOID && retTypeDesc.vt != (int)VarEnum.VT_HRESULT)
{
if (returnConverterOverride != null)
retType = returnConverterOverride;
else
retType = new TypeConverter(info.ConverterInfo, info.RefTypeInfo,
func.elemdescFunc.tdesc, isNewEnumMember, ConversionType.ReturnValue);
kind = ReturnKind.ReturnValue;
}
}
if (func.funckind == TypeLibTypes.Interop.FUNCKIND.FUNC_DISPATCH &&
(!info.ConverterInfo.TransformDispRetVal))
{
// Skip RetVal => return value transformation for dispatch interface when TransformDispRetVal is not set
}
else
{
for (int i = 0; i < func.cParams; ++i)
{
ElemDesc ret = func.GetElemDesc(i);
// In a COM type library, the return parameter is logical and is the last parameter
// whereas it is an explicit separate item in managed.
if (IsRetVal(info.ConverterInfo, ret.paramdesc, func))
{
// Convert last parameter to return value
if (retType == null)
{
returnArgId = i;
if (parameterConverterOverrideList[returnArgId] != null)
retType = parameterConverterOverrideList[returnArgId];
else
retType = new TypeConverter(info.ConverterInfo, info.RefTypeInfo,
ret.tdesc, isNewEnumMember, ConversionType.ParamRetVal);
kind = ReturnKind.RetValParameter;
}
else
{
info.ConverterInfo.ReportEvent(
WarningCode.Wrn_AmbiguousReturn,
Resource.FormatString("Wrn_AmbiguousReturn", info.RefTypeInfo.GetDocumentation(), info.RefTypeInfo.GetDocumentation(func.memid)));
}
break;
}
}
}
if (retType == null)
{
if (returnConverterOverride != null)
{
retType = returnConverterOverride;
kind = ReturnKind.ReturnValue;
}
else
{
retType = s_voidTypeConverter;
kind = ReturnKind.NoReturn;
}
}
return retType;
}
/// <summary>
/// Check for optional arguments
/// </summary>
public static void CheckForOptionalArguments(ConverterInfo info, FuncDesc func, out int varArg, out int firstOptArg, out int lastOptArg)
{
int numOfParams = func.cParams;
varArg = firstOptArg = lastOptArg = numOfParams + 1;
if (func.cParamsOpt == -1)
{
//
// [vararg] scenario
//
// For propput/propputref, the last parameter will be the value to be set
bool skipPropPutArg = false;
if ((func.invkind & (TypeLibTypes.Interop.INVOKEKIND.INVOKE_PROPERTYPUT | TypeLibTypes.Interop.INVOKEKIND.INVOKE_PROPERTYPUTREF)) != 0)
skipPropPutArg = true;
// vararg will be the last argument except for lcid arguments & retval arguments
for (int target = numOfParams - 1; target >= 0; --target)
{
// skip lcid/retval
ParamDesc paramDesc = func.GetElemDesc(target).paramdesc;
if (IsRetVal(info, paramDesc, func) || paramDesc.IsLCID)
continue;
// skip for property
if (skipPropPutArg)
{
skipPropPutArg = false;
continue;
}
varArg = target;
break;
}
Debug.Assert(varArg < numOfParams);
}
else if (func.cParamsOpt > 0)
{
//
// [optional] scenario
//
int countOfOptionals = func.cParamsOpt;
firstOptArg = 0;
// find the first optional arg
for (int target = func.cParams - 1; target >= 0; --target)
{
// The count of optional params does not include any lcid params, nor does
// it include the return value, so skip those.
ParamDesc param = func.GetElemDesc(target).paramdesc;
if (!(param.IsRetval || param.IsRetval))
{
if (--countOfOptionals == 0)
{
firstOptArg = target;
break;
}
}
}
lastOptArg = firstOptArg + func.cParamsOpt;
}
}
public static void CreateMethodForDelegate(InterfaceInfo info, FuncDesc funcDesc, int index)
{
InterfaceMemberInfo memberInfo = new InterfaceMemberInfo(info.ConverterInfo, info.RefTypeInfo, index, INVOKE_METHOD, INVOKE_METHOD, InterfaceMemberType.Method, TypeLibTypes.Interop.INVOKEKIND.INVOKE_FUNC, funcDesc.memid, funcDesc, null);
CreateMethod(info, memberInfo, CreateMethodMode.EventDelegateMode);
}
/// <summary>
/// Figure out types for parameters and return a parameter array
/// </summary>
/// <returns>TypeConverter[] array for all parameters</returns>
public static TypeConverter[] GenerateParameterTypes(InterfaceInfo info,
InterfaceMemberInfo memInfo, FuncDesc func, bool isNewEnumMember,
int vararg, out int lcidArg, out bool isStandardOleCall,
out TypeConverter retTypeConverter, out ReturnKind kind, out int retArgId)
{
//
// Check Lcid Parameter
//
lcidArg = -1;
for (int i = 0; i < func.cParams; ++i)
{
if (func.GetElemDesc(i).paramdesc.IsLCID)
{
if (lcidArg >= 0)
{
info.ConverterInfo.ReportEvent(
WarningCode.Wrn_MultipleLcids,
Resource.FormatString("Wrn_MultipleLcids",
info.RefTypeInfo.GetDocumentation(),
info.RefTypeInfo.GetDocumentation(func.memid)));
}
lcidArg = i;
}
}
// Pre-process for the rule engine
// For return value
TypeConverter convertToReturnConverter = null;
GetRuledReturnTypeConverter(info, memInfo, func, out convertToReturnConverter);
// For parameters
List<TypeConverter> convertToParameterConverterList;
GetRuledParameterTypeConverters(info, memInfo, func, out convertToParameterConverterList);
retTypeConverter = GetReturnType(info, memInfo, func, isNewEnumMember, convertToReturnConverter,
convertToParameterConverterList, out kind, out isStandardOleCall, out retArgId);
if ((retTypeConverter == convertToReturnConverter ||
convertToParameterConverterList.Contains(retTypeConverter)))
{
// From convertTo Action.
if ((retTypeConverter.ParameterAttributesOverride & ParameterAttributes.In) !=
ParameterAttributes.None)
{
Output.WriteWarning(Resource.FormatString("Wrn_ConvertReturnValueToNoneOut",
info.RefTypeInfo.GetDocumentation(func.memid)),
WarningCode.Wrn_ConvertReturnValueToNoneOut);
}
retTypeConverter.ParameterAttributesOverride = ParameterAttributes.None;
}
int cParams = func.cParams;
var typeConverterList = new List<TypeConverter>();
short n;
for (n = 0; n < cParams; ++n)
{
ElemDesc elem = func.GetElemDesc(n);
ParamDesc paramDesc = elem.paramdesc;
// Skip LCID
if (paramDesc.IsLCID)
continue;
// Skip return parameter
if (kind == ReturnKind.RetValParameter && n == retArgId)
continue;
try
{
ConversionType conversionType;
if (n == vararg)
conversionType = ConversionType.VarArgParameter;
else
conversionType = ConversionType.Parameter;
if (convertToParameterConverterList[n] != null)
{
typeConverterList.Add(convertToParameterConverterList[n]);
}
else
{
typeConverterList.Add(new TypeConverter(
info.ConverterInfo, info.RefTypeInfo, elem.tdesc,
paramDesc, false, conversionType));
}
}
catch (COMException ex)
{
if ((uint)ex.ErrorCode == HResults.TYPE_E_CANTLOADLIBRARY)
{
string[] names = info.RefTypeInfo.GetNames(func.memid, func.cParams + 1);
string name = names[n + 1];
if (name != String.Empty)
{
string msg = Resource.FormatString("Wrn_ParamErrorNamed",
new object[] { info.RefTypeInfo.GetDocumentation(), name,
memInfo.UniqueName });
info.ConverterInfo.ReportEvent(WarningCode.Wrn_ParamErrorNamed, msg);
}
else
{
string msg = Resource.FormatString("Wrn_ParamErrorUnnamed",
new object[] { info.RefTypeInfo.GetDocumentation(), n, memInfo.UniqueName });
info.ConverterInfo.ReportEvent(WarningCode.Wrn_ParamErrorUnnamed, msg);
}
}
throw;
}
}
return typeConverterList.ToArray();
}
private static bool IsRetVal(ConverterInfo info, ParamDesc paramDesc, FuncDesc funcDesc)
{
if (paramDesc.IsRetval)
{
// Don't consider it is a RetVal for dispatch functions unless TransformDispRetVal is true
if (funcDesc.funckind == TypeLibTypes.Interop.FUNCKIND.FUNC_DISPATCH && !info.TransformDispRetVal)
return false;
return true;
}
return false;
}
private static void GetRuledReturnTypeConverter(InterfaceInfo info,
InterfaceMemberInfo memInfo, FuncDesc func, out TypeConverter convertToReturnConverter)
{
convertToReturnConverter = null;
Rule convertToRule = null;
if (memInfo.Index != -1)
{
// Is not event delegate.
SignatureInfoMatchTarget returnTarget = new SignatureInfoMatchTarget(
info.RefTypeInfo, memInfo.Index, func.elemdescFunc, 0);
if (info.ConverterInfo.Settings.m_ruleSet != null)
{
ICategory signatureCategory = SignatureCategory.GetInstance();
AbstractActionManager actionManager = RuleEngine.GetActionManager();
List<Rule> convertToRules = info.ConverterInfo.Settings.m_ruleSet.GetRule(
signatureCategory, ConvertToActionDef.GetInstance(), returnTarget);
if (convertToRules.Count != 0)
{
if (convertToRules.Count > 1)
{
Output.WriteWarning(
Resource.FormatString("Wrn_RuleMultipleMatch",
ConvertToActionDef.GetInstance().GetActionName()),
WarningCode.Wrn_RuleMultipleMatch);
}
convertToRule = convertToRules[convertToRules.Count - 1];
}
}
if (convertToRule != null)
{
var convertToAction = convertToRule.Action as ConvertToAction;
Type typeReturn;
CustomAttributeBuilder customAttribute;
ParameterAttributes fixedParameterAttributes;
GetTypeFromConvertToAction(returnTarget, convertToAction, info.ConverterInfo,
info.RefTypeInfo, func.elemdescFunc.tdesc, out typeReturn, out customAttribute,
out fixedParameterAttributes);
convertToReturnConverter =
new TypeConverter(typeReturn, customAttribute, fixedParameterAttributes);
}
}
}
private static void GetRuledParameterTypeConverters(InterfaceInfo info, InterfaceMemberInfo memInfo,
FuncDesc func, out List<TypeConverter> convertToParameterConverterList)
{
int cParams = func.cParams;
convertToParameterConverterList = new List<TypeConverter>();
short n;
for (n = 0; n < cParams; ++n)
{
ElemDesc elem = func.GetElemDesc(n);
ParamDesc paramDesc = elem.paramdesc;
// "ConvertTo" for basic types and array
// Rule Engine
Rule convertToRule = null;
if (memInfo.Index != -1)
{
// Is not event delegate.
SignatureInfoMatchTarget target = new SignatureInfoMatchTarget(
info.RefTypeInfo, memInfo.Index, elem, n + 1);
if (info.ConverterInfo.Settings.m_ruleSet != null)
{
ICategory signatureCategory = SignatureCategory.GetInstance();
AbstractActionManager actionManager = RuleEngine.GetActionManager();
List<Rule> convertToRules = info.ConverterInfo.Settings.m_ruleSet.GetRule(
signatureCategory, ConvertToActionDef.GetInstance(), target);
if (convertToRules.Count != 0)
{
if (convertToRules.Count > 1)
{
Output.WriteWarning(
Resource.FormatString("Wrn_RuleMultipleMatch",
ConvertToActionDef.GetInstance().GetActionName()),
WarningCode.Wrn_RuleMultipleMatch);
}
convertToRule = convertToRules[convertToRules.Count - 1];
}
}
if (convertToRule != null)
{
var convertToAction = convertToRule.Action as ConvertToAction;
Type typeReturn;
CustomAttributeBuilder customAttribute;
ParameterAttributes fixedParameterAttributes;
GetTypeFromConvertToAction(target, convertToAction, info.ConverterInfo,
info.RefTypeInfo, elem.tdesc, out typeReturn, out customAttribute,
out fixedParameterAttributes);
convertToParameterConverterList.Add(
new TypeConverter(typeReturn, customAttribute, fixedParameterAttributes));
}
else
{
convertToParameterConverterList.Add(null);
}
}
else
{
convertToParameterConverterList.Add(null);
}
}
}
private static MethodBuilder CreateMethodInternal(InterfaceInfo info, FuncDesc func, InterfaceMemberInfo memberInfo, CreateMethodMode mode, ref bool isConversionLoss)
{
bool isNewEnumMember = false;
if (info.AllowNewEnum && IsNewEnumFunc(info.ConverterInfo, info.RefTypeInfo, func, memberInfo.Index))
{
info.AllowNewEnum = false;
isNewEnumMember = true;
if (mode == CreateMethodMode.EventDelegateMode)
{
info.ConverterInfo.ReportEvent(
WarningCode.Wrn_EventWithNewEnum,
Resource.FormatString("Wrn_EventWithNewEnum", info.RefTypeInfo.GetDocumentation()));
}
}
//
// Optional Arguments
//
int varArg; // index of the vararg argument
int firstOptArg; // index of the first optional argument
int lastOptArg; // index of the last optional argument
CheckForOptionalArguments(info.ConverterInfo, func, out varArg, out firstOptArg, out lastOptArg);
//
// Figure out types
//
ReturnKind returnKind;
TypeConverter retTypeConverter;
Type retType;
bool isStandardOleCall;
int lcidArg;
int retArgId;
TypeConverter[] paramTypeConverters = GenerateParameterTypes(info, memberInfo, func, isNewEnumMember, varArg, out lcidArg, out isStandardOleCall, out retTypeConverter, out returnKind, out retArgId);
var paramTypes = new Type[paramTypeConverters.Length];
for (int i = 0; i < paramTypeConverters.Length; ++i)
paramTypes[i] = paramTypeConverters[i].ConvertedType;
if (retTypeConverter != null)
retType = retTypeConverter.ConvertedType;
else
retType = null;
MethodBuilder methodBuilder = CreateMethodCore(info, memberInfo, isNewEnumMember, mode, isStandardOleCall, retType, paramTypes);
//
// Emit LCIDConversionAttribute
//
if (lcidArg >= 0)
methodBuilder.SetCustomAttribute(CustomAttributeHelper.GetBuilderForLCIDConversion(lcidArg));
int cParams = func.cParams;
int cParamsIter = cParams;
// If there is a return value, skip the last param
if (returnKind == ReturnKind.RetValParameter)
{
ProcessParam(info, memberInfo, func.GetElemDesc(retArgId), retTypeConverter, methodBuilder, 0, "", false, false);
isConversionLoss |= retTypeConverter.IsConversionLoss;
}
else if (returnKind == ReturnKind.ReturnValue)
{
ProcessParam(info, memberInfo, func.elemdescFunc, retTypeConverter, methodBuilder, 0, "", false, false);
isConversionLoss |= retTypeConverter.IsConversionLoss;
}
// First string is the method name so offset by one
String[] saNames = info.RefTypeInfo.GetNames(func.memid, cParams + 1);
//
// Process parameters
//
int paramIndex = 0;
for (int n = 0; n < cParamsIter; ++n)
{
ElemDesc elem = func.GetElemDesc(n);
// Skip LCID
if (elem.paramdesc.IsLCID)
continue;
// Skip the return parameter
if (returnKind == ReturnKind.RetValParameter && n == retArgId)
continue;
bool isOptionalArg = (n >= firstOptArg && n <= lastOptArg);
bool isVarArg = (n == varArg);
ProcessParam(info, memberInfo, elem, paramTypeConverters[paramIndex], methodBuilder, paramIndex + 1, saNames[n + 1], isVarArg, isOptionalArg);
isConversionLoss |= paramTypeConverters[paramIndex].IsConversionLoss;
paramIndex++;
}
//
// Emit TypeLibFuncAttribute if necessary
//
if (func.wFuncFlags != 0)
methodBuilder.SetCustomAttribute(CustomAttributeHelper.GetBuilderForTypeLibFunc((TypeLibFuncFlags)func.wFuncFlags));
//
// Handle DefaultMemberAttribute
//
if (!memberInfo.IsProperty && memberInfo.DispId == WellKnownDispId.DISPID_VALUE)
{
// DIFF: TlbImpv1 use the type library name while we use the unique name
info.ConverterInfo.SetDefaultMember(info.TypeBuilder, methodBuilder.Name);
}
return methodBuilder;
}
/// <summary>
/// Is this function a NewEnum function with the right parameters and DISPID?
/// </summary>
public static bool IsNewEnumFunc(ConverterInfo info, TypeInfo typeInfo, FuncDesc func, int index)
{
//
// Support GUID_DispIdOverride
//
int dispid = func.memid;
GetOverrideDispId(info, typeInfo, index, InterfaceMemberType.Method, ref dispid, false);
if (dispid == WellKnownDispId.DISPID_NEWENUM)
{
TypeDesc typeDesc = null;
if (func.funckind == TypeLibTypes.Interop.FUNCKIND.FUNC_DISPATCH)
{
if (func.IsPropertyGet || func.IsFunc)
{
if (func.cParams == 0)
{
typeDesc = func.elemdescFunc.tdesc;
}
else if (info.TransformDispRetVal && func.cParams == 1 && func.GetElemDesc(0).paramdesc.IsRetval)
{
typeDesc = func.GetElemDesc(0).tdesc.lptdesc;
}
}
}
else if (func.funckind == TypeLibTypes.Interop.FUNCKIND.FUNC_PUREVIRTUAL)
{
if ((func.cParams == 1) &&
(func.IsPropertyGet || func.IsFunc) &&
(func.GetElemDesc(0).paramdesc.IsRetval) &&
(func.GetElemDesc(0).tdesc.vt == (int)VarEnum.VT_PTR))
{
typeDesc = func.GetElemDesc(0).tdesc.lptdesc;
}
}
if (typeDesc != null)
{
if (typeDesc.vt == (int)VarEnum.VT_UNKNOWN || typeDesc.vt == (int)VarEnum.VT_DISPATCH)
{
// The member returns an IUnknown* or an IDispatch* which is valid.
return true;
}
else if (typeDesc.vt == (int)VarEnum.VT_PTR)
{
typeDesc = typeDesc.lptdesc;
if (typeDesc.vt == (int)VarEnum.VT_USERDEFINED)
{
TypeInfo type = typeInfo.GetRefTypeInfo(typeDesc.hreftype);
using (TypeAttr attr = type.GetTypeAttr())
{
if (attr.Guid == WellKnownGuids.IID_IUnknown ||
attr.Guid == WellKnownGuids.IID_IDispatch ||
attr.Guid == WellKnownGuids.IID_IEnumVARIANT)
{
return true;
}
}
}
}
}
}
return false;
}