public VariableDefinition[] ReadVariableSignature(uint signature, MethodDefinition parentMethod)
{
VariableDefinition[] variables = null;
using (BlobSignatureReader reader = GetBlobReader(signature))
{
reader.GenericContext = parentMethod;
byte local_sig = reader.ReadByte();
if (local_sig != 0x7)
{
throw new ArgumentException("Signature doesn't refer to a valid local variable signature");
}
uint count = NETGlobals.ReadCompressedUInt32(reader);
if (count == 0)
{
return(null);
}
variables = new VariableDefinition[count];
for (int i = 0; i < count; i++)
{
variables[i] = new VariableDefinition(i, ReadTypeReference(reader, (ElementType)reader.ReadByte()));
}
}
return(variables);
}
/// <summary>
/// Gets the blob value by it's signature/index and creates a binary reader using a generic instance.
/// </summary>
/// <param name="index">The index or signature to get the blob value from.</param>
/// <param name="instance">The generic instance that is being used as a context.</param>
/// <returns></returns>
public BlobSignatureReader GetBlobReader(uint index, IGenericContext instance)
{
BlobSignatureReader reader = GetBlobReader(index);
reader.GenericContext = instance;
return(reader);
}
public IMemberSignature ReadMemberRefSignature(uint sig, IGenericContext context)
{
IMemberSignature signature = null;
using (BlobSignatureReader reader = GetBlobReader(sig, context))
{
byte flag = reader.ReadByte();
if (flag == 0x6)
{
FieldSignature fieldsignature = new FieldSignature();
fieldsignature.ReturnType = ReadTypeReference(reader, (ElementType)reader.ReadByte());
signature = fieldsignature;
}
else
{
MethodSignature methodsignature = new MethodSignature();
if ((flag & 0x20) != 0)
{
methodsignature.HasThis = true;
flag = (byte)(flag & -33);
}
if ((flag & 0x40) != 0)
{
methodsignature.ExplicitThis = true;
flag = (byte)(flag & -65);
}
if ((flag & 0x10) != 0)
{
uint genericsig = NETGlobals.ReadCompressedUInt32(reader);
}
methodsignature.CallingConvention = (MethodCallingConvention)flag;
uint num3 = NETGlobals.ReadCompressedUInt32(reader);
ElementType type = (ElementType)reader.ReadByte();
methodsignature.ReturnType = ReadTypeReference(reader, type);
if (num3 != 0)
{
ParameterReference[] parameters = new ParameterReference[num3];
for (int i = 0; i < num3; i++)
{
parameters[i] = new ParameterReference()
{
ParameterType = ReadTypeReference(reader, (ElementType)reader.ReadByte())
};
}
methodsignature.Parameters = parameters;
}
signature = methodsignature;
}
}
return(signature);
}
public bool TryGetBlobReader(uint index, IGenericContext instance, out BlobSignatureReader reader)
{
if (TryGetBlobReader(index, out reader))
{
reader.GenericContext = instance;
return(true);
}
return(false);
}
/// <summary>
/// Gets the blob value by it's signature/index and creates a binary reader.
/// </summary>
/// <param name="index">The index or signature to get the blob value from.</param>
/// <returns></returns>
public BlobSignatureReader GetBlobReader(uint index)
{
byte[] bytes = GetBlob(index);
MemoryStream newStream = new MemoryStream(bytes);
newStream.Seek(0, SeekOrigin.Begin);
BlobSignatureReader reader = new BlobSignatureReader(newStream);
return(reader);
}
private TypeReference ReadTypeToken(BlobSignatureReader reader)
{
TypeReference typeRef = netheader.TablesHeap.TypeDefOrRef.GetMember((int)NETGlobals.ReadCompressedUInt32(reader)) as TypeReference;
if (typeRef is ISpecification)
{
typeRef = (typeRef as TypeSpecification).TransformWith(reader.GenericContext) as TypeReference;
}
return(typeRef);
}
private void ReadGenericInstanceSignature(BlobSignatureReader reader, GenericInstanceType genericType)
{
uint number = NETGlobals.ReadCompressedUInt32(reader);
genericType.genericArguments = new TypeReference[number];
for (int i = 0; i < number; i++)
{
genericType.genericArguments[i] = ReadTypeReference(reader, (ElementType)reader.ReadByte());
}
}
public bool TryGetBlobReader(uint index, out BlobSignatureReader reader)
{
reader = null;
if (index == 0 || index > StreamSize)
{
return(false);
}
reader = GetBlobReader(index);
return(true);
}
private object ReadElement(BlobSignatureReader reader, TypeReference paramType)
{
switch (paramType.elementType)
{
case ElementType.I1:
return(reader.ReadSByte());
case ElementType.I2:
return(reader.ReadInt16());
case ElementType.I4:
return(reader.ReadInt32());
case ElementType.I8:
return(reader.ReadInt64());
case ElementType.U1:
return(reader.ReadByte());
case ElementType.U2:
return(reader.ReadInt16());
case ElementType.U4:
return(reader.ReadInt32());
case ElementType.U8:
return(reader.ReadInt64());
case ElementType.R4:
return(reader.ReadSingle());
case ElementType.R8:
return(reader.ReadDouble());
case ElementType.Type:
case ElementType.String:
uint size = NETGlobals.ReadCompressedUInt32(reader);
if (size == 0xFF)
{
return(string.Empty);
}
byte[] rawdata = reader.ReadBytes((int)size);
return(Encoding.UTF8.GetString(rawdata));
case ElementType.Char:
return(reader.ReadChar());
throw new NotSupportedException();
case ElementType.Boolean:
return(reader.ReadByte() == 1);
}
return(null);
}
public TypeReference ReadTypeSignature(uint signature, IGenericContext paramProvider)
{
TypeReference typeRef = null;
using (BlobSignatureReader reader = GetBlobReader(signature))
{
reader.GenericContext = paramProvider;
typeRef = ReadTypeReference(reader, (ElementType)NETGlobals.ReadCompressedUInt32(reader));
}
return(typeRef);
}
private ArrayType ReadArrayType(BlobSignatureReader reader)
{
TypeReference arrayType = ReadTypeReference(reader, (ElementType)reader.ReadByte());
uint rank = NETGlobals.ReadCompressedUInt32(reader);
uint[] upperbounds = new uint[NETGlobals.ReadCompressedUInt32(reader)];
for (int i = 0; i < upperbounds.Length; i++)
{
upperbounds[i] = NETGlobals.ReadCompressedUInt32(reader);
}
int[] lowerbounds = new int[NETGlobals.ReadCompressedUInt32(reader)];
for (int i = 0; i < lowerbounds.Length; i++)
{
lowerbounds[i] = NETGlobals.ReadCompressedInt32(reader);
}
ArrayDimension[] dimensions = new ArrayDimension[rank];
for (int i = 0; i < rank; i++)
{
int?lower = null;
int?upper = null;
if (i < lowerbounds.Length)
{
lower = new int?(lowerbounds[i]);
}
if (i < upperbounds.Length)
{
int x = (int)upperbounds[i];
upper = (lower.HasValue ? new int?(lower.GetValueOrDefault() + x) : 0) - 1;
}
ArrayDimension dimension = new ArrayDimension(lower, upper);
dimensions[i] = dimension;
}
return(new ArrayType(arrayType, (int)rank, dimensions));
}
public TypeReference[] ReadGenericArgumentsSignature(uint signature, IGenericContext context)
{
using (BlobSignatureReader reader = GetBlobReader(signature, context))
{
if (reader.ReadByte() == 0xa)
{
uint count = NETGlobals.ReadCompressedUInt32(reader);
TypeReference[] types = new TypeReference[count];
for (int i = 0; i < count; i++)
{
types[i] = ReadTypeReference(reader, (ElementType)reader.ReadByte());
}
return(types);
}
}
throw new ArgumentException("Signature doesn't point to a valid generic arguments signature");
}
private object ReadArgumentValue(BlobSignatureReader reader, TypeReference paramType)
{
if (!paramType.IsArray || !(paramType as ArrayType).IsVector)
{
return(ReadElement(reader, paramType));
}
// throw new NotImplementedException("Array constructor values are not supported yet.");
ushort elementcount = reader.ReadUInt16();
object[] elements = new object[elementcount];
for (int i = 0; i < elementcount; i++)
{
elements[i] = ReadElement(reader, (paramType as ArrayType).OriginalType);
}
return(elements);
}
private TypeReference ReadGenericType(BlobSignatureReader reader)
{
// not finished yet!
uint token = NETGlobals.ReadCompressedUInt32(reader);
object genericType;
if (reader.GenericContext.IsDefinition)
{
if (TryGetArrayValue(reader.GenericContext.GenericParameters, token, out genericType))
{
return(genericType as TypeReference);
}
}
if (TryGetArrayValue(reader.GenericContext.GenericArguments, token, out genericType))
{
return(genericType as TypeReference);
}
return(new TypeReference(string.Empty, token.ToString(), null));
}
public PropertySignature ReadPropertySignature(uint signature, PropertyDefinition parentProperty)
{
PropertySignature propertySig = null;
using (BlobSignatureReader reader = GetBlobReader(signature))
{
reader.GenericContext = parentProperty.DeclaringType;
byte flag = reader.ReadByte();
if ((flag & 8) == 0)
{
throw new ArgumentException("Signature doesn't refer to a valid property signature.");
}
propertySig = new PropertySignature();
propertySig.HasThis = (flag & 0x20) != 0;
NETGlobals.ReadCompressedUInt32(reader);
propertySig.ReturnType = ReadTypeReference(reader, (ElementType)reader.ReadByte());
}
return(propertySig);
}
public CustomAttributeSignature ReadCustomAttributeSignature(CustomAttribute parent, uint signature)
{
CustomAttributeSignature customAttrSig = null;
using (BlobSignatureReader reader = GetBlobReader(signature))
{
ushort sign = reader.ReadUInt16();
if (sign != 0x0001)
{
throw new ArgumentException("Signature doesn't refer to a valid Custom Attribute signature");
}
int fixedArgCount = 0;
if (parent.Constructor.Signature != null && parent.Constructor.Signature.Parameters != null)
{
fixedArgCount = parent.Constructor.Signature.Parameters.Length;
}
CustomAttributeArgument[] fixedArgs = new CustomAttributeArgument[fixedArgCount];
for (int i = 0; i < fixedArgCount; i++)
{
fixedArgs[i] = new CustomAttributeArgument(ReadArgumentValue(reader, parent.Constructor.Signature.Parameters[i].ParameterType));
}
int namedArgCount = 0;
CustomAttributeArgument[] namedArgs = new CustomAttributeArgument[namedArgCount];
customAttrSig = new CustomAttributeSignature(fixedArgs, namedArgs);
}
return(customAttrSig);
}
public bool TryGetBlobReader(uint index, out BlobSignatureReader reader)
{
reader = null;
if (index == 0 || index > StreamSize)
return false;
reader = GetBlobReader(index);
return true;
}
/// <summary>
/// Gets the blob value by it's signature/index and creates a binary reader.
/// </summary>
/// <param name="index">The index or signature to get the blob value from.</param>
/// <returns></returns>
public BlobSignatureReader GetBlobReader(uint index)
{
byte[] bytes = GetBlob(index);
MemoryStream newStream = new MemoryStream(bytes);
newStream.Seek(0, SeekOrigin.Begin);
BlobSignatureReader reader = new BlobSignatureReader(newStream, _netheader);
return reader;
}
private TypeReference ReadTypeReference(BlobSignatureReader reader, ElementType type)
{
switch (type)
{
case ElementType.Void:
return(netheader.TypeSystem.Void);
case ElementType.I:
return(netheader.TypeSystem.IntPtr);
case ElementType.I1:
return(netheader.TypeSystem.Int8);
case ElementType.I2:
return(netheader.TypeSystem.Int16);
case ElementType.I4:
return(netheader.TypeSystem.Int32);
case ElementType.I8:
return(netheader.TypeSystem.Int64);
case ElementType.U:
return(netheader.TypeSystem.UIntPtr);
case ElementType.U1:
return(netheader.TypeSystem.UInt8);
case ElementType.U2:
return(netheader.TypeSystem.UInt16);
case ElementType.U4:
return(netheader.TypeSystem.UInt32);
case ElementType.U8:
return(netheader.TypeSystem.UInt64);
case ElementType.Object:
return(netheader.TypeSystem.Object);
case ElementType.R4:
return(netheader.TypeSystem.Single);
case ElementType.R8:
return(netheader.TypeSystem.Double);
case ElementType.String:
return(netheader.TypeSystem.String);
case ElementType.Char:
return(netheader.TypeSystem.Char);
case ElementType.Type:
return(netheader.TypeSystem.Type);
case ElementType.Boolean:
return(netheader.TypeSystem.Boolean);
case ElementType.Ptr:
return(new PointerType(ReadTypeReference(reader, (ElementType)reader.ReadByte())));
case ElementType.MVar:
if (reader.GenericContext == null)
{
return(new GenericParamReference(NETGlobals.ReadCompressedInt32(reader), new TypeReference(string.Empty, "MVar", null)
{
elementType = ElementType.MVar, @namespace = "", netheader = this.netheader
}));
}
return(ReadGenericType(reader));
case ElementType.Var:
uint token = NETGlobals.ReadCompressedUInt32(reader);
if (reader.GenericContext != null)
{
if (reader.GenericContext.DeclaringType != null && reader.GenericContext.DeclaringType.GenericParameters != null && reader.GenericContext.DeclaringType.GenericParameters.Length > token)
{
return(reader.GenericContext.DeclaringType.GenericParameters[token]);
}
else if (reader.GenericContext.GenericParameters != null && reader.GenericContext.GenericParameters.Length > token)
{
return(reader.GenericContext.GenericParameters[token]);
}
}
return(new GenericParamReference((int)token, new TypeReference(string.Empty, "Var", null)
{
elementType = ElementType.Var, @namespace = "", netheader = this.netheader
}));
case ElementType.Array:
return(ReadArrayType(reader));
case ElementType.SzArray:
return(new ArrayType(ReadTypeReference(reader, (ElementType)reader.ReadByte())));
case ElementType.Class:
return((TypeReference)netheader.TablesHeap.TypeDefOrRef.GetMember((int)NETGlobals.ReadCompressedUInt32(reader)));
case ElementType.ValueType:
TypeReference typeRef = (TypeReference)netheader.TablesHeap.TypeDefOrRef.GetMember((int)NETGlobals.ReadCompressedUInt32(reader));
typeRef.IsValueType = true;
return(typeRef);
case ElementType.ByRef:
return(new ByReferenceType(ReadTypeReference(reader, (ElementType)reader.ReadByte())));
case ElementType.Pinned:
return(new PinnedType(ReadTypeReference(reader, (ElementType)reader.ReadByte())));
case ElementType.GenericInst:
bool flag = reader.ReadByte() == 0x11;
TypeReference reference2 = ReadTypeToken(reader);
GenericInstanceType instance = new GenericInstanceType(reference2);
this.ReadGenericInstanceSignature(reader, instance);
if (flag)
{
instance.IsValueType = true;
}
return(instance);
}
return(new TypeReference(string.Empty, type.ToString(), null)
{
netheader = this.netheader
});
}
public object ReadConstantValue(ElementType type, uint signature)
{
object value = null;
using (BlobSignatureReader reader = GetBlobReader(signature))
{
switch (type)
{
case ElementType.Boolean:
value = reader.ReadByte() == 1;
break;
case ElementType.Char:
value = (char)reader.ReadUInt16();
break;
case ElementType.String:
value = Encoding.Unicode.GetString(reader.ReadBytes((int)reader.BaseStream.Length));
break;
case ElementType.I1:
value = reader.ReadSByte();
break;
case ElementType.I2:
value = reader.ReadInt16();
break;
case ElementType.I4:
value = reader.ReadInt32();
break;
case ElementType.I8:
value = reader.ReadInt64();
break;
case ElementType.U1:
value = reader.ReadByte();
break;
case ElementType.U2:
value = reader.ReadUInt16();
break;
case ElementType.U4:
value = reader.ReadUInt32();
break;
case ElementType.U8:
value = reader.ReadUInt64();
break;
case ElementType.R4:
value = reader.ReadSingle();
break;
case ElementType.R8:
value = reader.ReadDouble();
break;
default:
throw new ArgumentException("Invalid constant type", "type");
}
}
return(value);
}
public bool TryGetBlobReader(uint index, IGenericContext instance, out BlobSignatureReader reader)
{
if (TryGetBlobReader(index, out reader))
{
reader.GenericContext = instance;
return true;
}
return false;
}
