SecurityCustomAttribute/*?*/ ReadSecurityAttribute(SecurityAttribute securityAttribute) {
string/*?*/ typeNameStr = this.GetSerializedString();
if (typeNameStr == null)
return null;
ITypeReference/*?*/ moduleTypeReference = this.PEFileToObjectModel.GetSerializedTypeNameAsTypeReference(typeNameStr);
if (moduleTypeReference == null)
return null;
IMethodReference ctorReference = Dummy.MethodReference;
ITypeDefinition attributeType = moduleTypeReference.ResolvedType;
if (!(attributeType is Dummy)) {
foreach (ITypeDefinitionMember member in attributeType.GetMembersNamed(this.PEFileToObjectModel.NameTable.Ctor, false)) {
IMethodDefinition/*?*/ method = member as IMethodDefinition;
if (method == null) continue;
if (!IteratorHelper.EnumerableHasLength(method.Parameters, 1)) continue;
//TODO: check that parameter has the right type
ctorReference = method;
break;
}
} else {
int ctorKey = this.PEFileToObjectModel.NameTable.Ctor.UniqueKey;
foreach (ITypeMemberReference mref in this.PEFileToObjectModel.GetMemberReferences()) {
IMethodReference/*?*/ methRef = mref as IMethodReference;
if (methRef == null) continue;
if (methRef.ContainingType.InternedKey != moduleTypeReference.InternedKey) continue;
if (methRef.Name.UniqueKey != ctorKey) continue;
if (!IteratorHelper.EnumerableHasLength(methRef.Parameters, 1)) continue;
//TODO: check that parameter has the right type
ctorReference = methRef;
break;
}
}
if (ctorReference is Dummy) {
ctorReference = new MethodReference(this.PEFileToObjectModel.ModuleReader.metadataReaderHost, moduleTypeReference,
CallingConvention.Default|CallingConvention.HasThis, this.PEFileToObjectModel.PlatformType.SystemVoid,
this.PEFileToObjectModel.NameTable.Ctor, 0, this.PEFileToObjectModel.PlatformType.SystemSecurityPermissionsSecurityAction);
}
this.SignatureMemoryReader.ReadCompressedUInt32(); // BlobSize...
int numOfNamedArgs = this.SignatureMemoryReader.ReadCompressedUInt32();
FieldOrPropertyNamedArgumentExpression[]/*?*/ namedArgumentArray = null;
if (numOfNamedArgs > 0) {
namedArgumentArray = new FieldOrPropertyNamedArgumentExpression[numOfNamedArgs];
for (int i = 0; i < numOfNamedArgs; ++i) {
bool isField = this.SignatureMemoryReader.ReadByte() == SerializationType.Field;
ITypeReference/*?*/ memberType = this.GetFieldOrPropType();
if (memberType == null)
return null;
string/*?*/ memberStr = this.GetSerializedString();
if (memberStr == null)
return null;
IName memberName = this.PEFileToObjectModel.NameTable.GetNameFor(memberStr);
ExpressionBase/*?*/ value = this.ReadSerializedValue(memberType);
if (value == null)
return null;
namedArgumentArray[i] = new FieldOrPropertyNamedArgumentExpression(memberName, moduleTypeReference, isField, memberType, value);
}
}
return new SecurityCustomAttribute(securityAttribute, ctorReference, namedArgumentArray);
}
//^ [NotDelayed]
internal CustomAttributeDecoder(
PEFileToObjectModel peFileToObjectModel,
MemoryReader signatureMemoryReader,
uint customAttributeRowId,
IModuleMethodReference attributeConstructor
)
: base(peFileToObjectModel, signatureMemoryReader) {
//^ this.SignatureMemoryReader = signatureMemoryReader; //TODO: Spec# bug. This assignment should not be necessary.
this.CustomAttribute = Dummy.CustomAttribute;
//^ base;
ushort prolog = this.SignatureMemoryReader.ReadUInt16();
if (prolog != SerializationType.CustomAttributeStart) {
return;
}
List<ExpressionBase> exprList = new List<ExpressionBase>();
IModuleParameterTypeInformation[] modParams = attributeConstructor.RequiredModuleParameterInfos.RawArray;
int len = modParams.Length;
for (int i = 0; i < len; ++i) {
IModuleTypeReference/*?*/ moduleTypeRef = modParams[i].ModuleTypeReference;
if (moduleTypeRef == null) {
// Error...
return;
}
ExpressionBase/*?*/ argument = this.ReadSerializedValue(moduleTypeRef);
if (argument == null) {
// Error...
this.decodeFailed = true;
return;
}
exprList.Add(argument);
}
ushort numOfNamedArgs = this.SignatureMemoryReader.ReadUInt16();
FieldOrPropertyNamedArgumentExpression[]/*?*/ namedArgumentArray = null;
if (numOfNamedArgs > 0) {
namedArgumentArray = new FieldOrPropertyNamedArgumentExpression[numOfNamedArgs];
for (ushort i = 0; i < numOfNamedArgs; ++i) {
bool isField = this.SignatureMemoryReader.ReadByte() == SerializationType.Field;
IModuleTypeReference/*?*/ memberType = this.GetFieldOrPropType();
if (memberType == null) {
// Error...
return;
}
string/*?*/ memberStr = this.GetSerializedString();
if (memberStr == null)
return;
IName memberName = this.PEFileToObjectModel.NameTable.GetNameFor(memberStr);
ExpressionBase/*?*/ value = this.ReadSerializedValue(memberType);
if (value == null) {
// Error...
return;
}
IModuleTypeReference/*?*/ moduleTypeRef = attributeConstructor.OwningTypeReference;
if (moduleTypeRef == null) {
// Error...
return;
}
FieldOrPropertyNamedArgumentExpression namedArg = new FieldOrPropertyNamedArgumentExpression(memberName, moduleTypeRef, isField, memberType, value);
namedArgumentArray[i] = namedArg;
}
}
EnumerableArrayWrapper<ExpressionBase, IMetadataExpression> arguments = TypeCache.EmptyExpressionList;
if (exprList.Count > 0)
arguments = new EnumerableArrayWrapper<ExpressionBase, IMetadataExpression>(exprList.ToArray(), Dummy.Expression);
EnumerableArrayWrapper<FieldOrPropertyNamedArgumentExpression, IMetadataNamedArgument> namedArguments = TypeCache.EmptyNamedArgumentList;
if (namedArgumentArray != null)
namedArguments = new EnumerableArrayWrapper<FieldOrPropertyNamedArgumentExpression, IMetadataNamedArgument>(namedArgumentArray, Dummy.NamedArgument);
this.CustomAttribute = new CustomAttribute(this.PEFileToObjectModel, customAttributeRowId, attributeConstructor, arguments, namedArguments);
}
internal CustomAttributeDecoder(PEFileToObjectModel peFileToObjectModel, MemoryReader signatureMemoryReader, uint customAttributeRowId,
IMethodReference attributeConstructor)
: base(peFileToObjectModel, signatureMemoryReader) {
this.CustomAttribute = Dummy.CustomAttribute;
ushort prolog = this.SignatureMemoryReader.ReadUInt16();
if (prolog != SerializationType.CustomAttributeStart) return;
int len = attributeConstructor.ParameterCount;
IMetadataExpression[]/*?*/ exprList = len == 0 ? null : new IMetadataExpression[len];
int i = 0;
foreach (var parameter in attributeConstructor.Parameters) {
var parameterType = parameter.Type;
if (parameterType is Dummy) {
// Error...
return;
}
ExpressionBase/*?*/ argument = this.ReadSerializedValue(parameterType);
if (argument == null) {
// Error...
this.decodeFailed = true;
return;
}
exprList[i++] = argument;
}
IMetadataNamedArgument[]/*?*/ namedArgumentArray = null;
if (2 <= (int)this.SignatureMemoryReader.RemainingBytes) {
ushort numOfNamedArgs = this.SignatureMemoryReader.ReadUInt16();
if (numOfNamedArgs > 0) {
namedArgumentArray = new IMetadataNamedArgument[numOfNamedArgs];
for (i = 0; i < numOfNamedArgs; ++i) {
if (0 >= (int)this.SignatureMemoryReader.RemainingBytes) break;
bool isField = this.SignatureMemoryReader.ReadByte() == SerializationType.Field;
ITypeReference/*?*/ memberType = this.GetFieldOrPropType();
if (memberType == null) {
// Error...
return;
}
string/*?*/ memberStr = this.GetSerializedString();
if (memberStr == null)
return;
IName memberName = this.PEFileToObjectModel.NameTable.GetNameFor(memberStr);
ExpressionBase/*?*/ value = this.ReadSerializedValue(memberType);
if (value == null) {
// Error...
return;
}
ITypeReference/*?*/ moduleTypeRef = attributeConstructor.ContainingType;
if (moduleTypeRef == null) {
// Error...
return;
}
FieldOrPropertyNamedArgumentExpression namedArg = new FieldOrPropertyNamedArgumentExpression(memberName, moduleTypeRef, isField, memberType, value);
namedArgumentArray[i] = namedArg;
}
}
}
this.CustomAttribute = peFileToObjectModel.ModuleReader.metadataReaderHost.Rewrite(peFileToObjectModel.Module,
new CustomAttribute(peFileToObjectModel, customAttributeRowId, attributeConstructor, exprList, namedArgumentArray));
}
/// <summary>
/// Provides the host with an opportunity to substitute a custom attribute with another during metadata reading.
/// This avoids the cost of rewriting the entire unit in order to make such changes.
/// </summary>
/// <param name="referringUnit">The unit that contains the custom attribute.</param>
/// <param name="customAttribute">The custom attribute to rewrite (fix up).</param>
/// <returns>
/// Usually the value in customAttribute, but occassionally another custom attribute.
/// </returns>
public override ICustomAttribute Rewrite(IUnit referringUnit, ICustomAttribute customAttribute) {
CustomAttribute customAttr = customAttribute as CustomAttribute;
if (customAttr == null) return customAttribute;
var referringModule = referringUnit as IModule;
if (referringModule == null || referringModule.ContainingAssembly == null || !(referringModule.ContainingAssembly.ContainsForeignTypes)) return customAttribute;
if (!TypeHelper.TypesAreEquivalent(customAttribute.Type, this.PlatformType.SystemAttributeUsageAttribute)) return customAttribute;
//The custom attribute constructor has been redirected from Windows.Foundation.AttributeUsageAttribute, which has a different
//set of flags from System.AttributeUsageAttribute for its first and only constructor parameter and also does not have an AllowMultiple property.
var argArray = customAttr.Arguments;
if (argArray == null || argArray.Length != 1) return customAttribute;
var argConst = argArray[0] as ConstantExpression;
if (argConst == null || !(argConst.value is int)) return customAttribute;
int clrEnumValue = 0;
switch ((int)argConst.Value) {
case 0x00000001: clrEnumValue = 0x00001000; break;
case 0x00000002: clrEnumValue = 0x00000010; break;
case 0x00000004: clrEnumValue = 0x00000200; break;
case 0x00000008: clrEnumValue = 0x00000100; break;
case 0x00000010: clrEnumValue = 0x00000400; break;
case 0x00000020: clrEnumValue = 0x00000000; break;
case 0x00000040: clrEnumValue = 0x00000040; break;
case 0x00000080: clrEnumValue = 0x00000800; break;
case 0x00000100: clrEnumValue = 0x00000080; break;
case 0x00000200: clrEnumValue = 0x00000004; break;
case 0x00000400: clrEnumValue = 0x00000008; break;
case 0x00000800: clrEnumValue = 0x00000000; break;
case -1: clrEnumValue = 0x00007FFF; break;
}
argConst.value = clrEnumValue;
if (this.FellowCustomAttributeIncludeAllowMultiple(customAttr)) {
if (customAttr.NamedArguments != null) return customAttribute;
var trueVal = new ConstantExpression(this.PlatformType.SystemBoolean, true);
var namedArgArray = new IMetadataNamedArgument[1];
namedArgArray[0] = new FieldOrPropertyNamedArgumentExpression(this.AllowMultiple, Dummy.Type, false, this.PlatformType.SystemBoolean, trueVal);
customAttr.NamedArguments = namedArgArray;
}
return customAttribute;
}
