SigType ReadType(byte [] data, int pos, out int start)
{
start = pos;
ElementType element = (ElementType)Utilities.ReadCompressedInteger(data, start, out start);
switch (element)
{
case ElementType.ValueType:
VALUETYPE vt = new VALUETYPE();
vt.Type = Utilities.GetMetadataToken(CodedIndex.TypeDefOrRef,
(uint)Utilities.ReadCompressedInteger(data, start, out start));
return(vt);
case ElementType.Class:
CLASS c = new CLASS();
c.Type = Utilities.GetMetadataToken(CodedIndex.TypeDefOrRef,
(uint)Utilities.ReadCompressedInteger(data, start, out start));
return(c);
case ElementType.Ptr:
PTR p = new PTR();
int buf = start;
int flag = Utilities.ReadCompressedInteger(data, start, out start);
p.Void = flag == (int)ElementType.Void;
if (p.Void)
{
return(p);
}
start = buf;
p.CustomMods = this.ReadCustomMods(data, start, out start);
p.PtrType = this.ReadType(data, start, out start);
return(p);
case ElementType.FnPtr:
FNPTR fp = new FNPTR();
if ((data [start] & 0x5) != 0)
{
MethodRefSig mr = new MethodRefSig((uint)start);
ReadMethodRefSig(mr, data, start, out start);
fp.Method = mr;
}
else
{
MethodDefSig md = new MethodDefSig((uint)start);
ReadMethodDefSig(md, data, start, out start);
fp.Method = md;
}
return(fp);
case ElementType.Array:
ARRAY ary = new ARRAY();
ArrayShape shape = new ArrayShape();
ary.Type = this.ReadType(data, start, out start);
shape.Rank = Utilities.ReadCompressedInteger(data, start, out start);
shape.NumSizes = Utilities.ReadCompressedInteger(data, start, out start);
shape.Sizes = new int [shape.NumSizes];
for (int i = 0; i < shape.NumSizes; i++)
{
shape.Sizes [i] = Utilities.ReadCompressedInteger(data, start, out start);
}
shape.NumLoBounds = Utilities.ReadCompressedInteger(data, start, out start);
shape.LoBounds = new int [shape.NumLoBounds];
for (int i = 0; i < shape.NumLoBounds; i++)
{
shape.LoBounds [i] = Utilities.ReadCompressedInteger(data, start, out start);
}
ary.Shape = shape;
return(ary);
case ElementType.SzArray:
SZARRAY sa = new SZARRAY();
sa.Type = this.ReadType(data, start, out start);
return(sa);
case ElementType.Var:
return(new VAR(Utilities.ReadCompressedInteger(data, start, out start)));
case ElementType.MVar:
return(new MVAR(Utilities.ReadCompressedInteger(data, start, out start)));
case ElementType.GenericInst:
GENERICINST ginst = new GENERICINST();
ginst.ValueType = ((ElementType)Utilities.ReadCompressedInteger(
data, start, out start)) == ElementType.ValueType;
ginst.Type = Utilities.GetMetadataToken(CodedIndex.TypeDefOrRef,
(uint)Utilities.ReadCompressedInteger(data, start, out start));
ginst.Signature = ReadGenericInstSignature(data, start, out start);
return(ginst);
default:
return(new SigType(element));
}
}
public SigType GetSigType(TypeReference type)
{
string name = type.FullName;
switch (name) {
case Constants.Void :
return new SigType (ElementType.Void);
case Constants.Object :
return new SigType (ElementType.Object);
case Constants.Boolean :
return new SigType (ElementType.Boolean);
case Constants.String :
return new SigType (ElementType.String);
case Constants.Char :
return new SigType (ElementType.Char);
case Constants.SByte :
return new SigType (ElementType.I1);
case Constants.Byte :
return new SigType (ElementType.U1);
case Constants.Int16 :
return new SigType (ElementType.I2);
case Constants.UInt16 :
return new SigType (ElementType.U2);
case Constants.Int32 :
return new SigType (ElementType.I4);
case Constants.UInt32 :
return new SigType (ElementType.U4);
case Constants.Int64 :
return new SigType (ElementType.I8);
case Constants.UInt64 :
return new SigType (ElementType.U8);
case Constants.Single :
return new SigType (ElementType.R4);
case Constants.Double :
return new SigType (ElementType.R8);
case Constants.IntPtr :
return new SigType (ElementType.I);
case Constants.UIntPtr :
return new SigType (ElementType.U);
case Constants.TypedReference :
return new SigType (ElementType.TypedByRef);
}
if (type is GenericParameter) {
GenericParameter gp = type as GenericParameter;
int pos = gp.Owner.GenericParameters.IndexOf (gp);
if (gp.Owner is TypeReference)
return new VAR (pos);
else if (gp.Owner is MethodReference)
return new MVAR (pos);
else
throw new ReflectionException ("Unkown generic parameter type");
} else if (type is GenericInstanceType) {
GenericInstanceType git = type as GenericInstanceType;
GENERICINST gi = new GENERICINST ();
gi.ValueType = git.IsValueType;
gi.Type = GetTypeDefOrRefToken (git.ElementType);
gi.Signature = new GenericInstSignature ();
gi.Signature.Arity = git.GenericArguments.Count;
gi.Signature.Types = new SigType [gi.Signature.Arity];
for (int i = 0; i < git.GenericArguments.Count; i++)
gi.Signature.Types [i] = GetSigType (git.GenericArguments [i]);
return gi;
} else if (type is ArrayType) {
ArrayType aryType = type as ArrayType;
if (aryType.IsSizedArray) {
SZARRAY szary = new SZARRAY ();
szary.Type = GetSigType (aryType.ElementType);
return szary;
}
// not optimized
ArrayShape shape = new ArrayShape ();
shape.Rank = aryType.Dimensions.Count;
shape.NumSizes = 0;
for (int i = 0; i < shape.Rank; i++) {
ArrayDimension dim = aryType.Dimensions [i];
if (dim.UpperBound > 0)
shape.NumSizes++;
}
shape.Sizes = new int [shape.NumSizes];
shape.NumLoBounds = shape.Rank;
shape.LoBounds = new int [shape.NumLoBounds];
for (int i = 0; i < shape.Rank; i++) {
ArrayDimension dim = aryType.Dimensions [i];
shape.LoBounds [i] = dim.LowerBound;
if (dim.UpperBound > 0)
shape.Sizes [i] = dim.UpperBound - dim.LowerBound + 1;
}
ARRAY ary = new ARRAY ();
ary.Shape = shape;
ary.Type = GetSigType (aryType.ElementType);
return ary;
} else if (type is PointerType) {
PTR p = new PTR ();
TypeReference elementType = (type as PointerType).ElementType;
p.Void = elementType.FullName == Constants.Void;
if (!p.Void) {
p.CustomMods = GetCustomMods (elementType);
p.PtrType = GetSigType (elementType);
}
return p;
} else if (type is FunctionPointerType) {
throw new NotImplementedException ("Function pointer are not implemented"); // TODO
} else if (type is TypeSpecification) {
return GetSigType ((type as TypeSpecification).ElementType);
} else if (type.IsValueType) {
VALUETYPE vt = new VALUETYPE ();
vt.Type = GetTypeDefOrRefToken (type);
return vt;
} else {
CLASS c = new CLASS ();
c.Type = GetTypeDefOrRefToken (type);
return c;
}
}
SigType ReadType(byte [] data, int pos, out int start)
{
start = pos;
ElementType element = (ElementType) Utilities.ReadCompressedInteger (data, start, out start);
switch (element) {
case ElementType.ValueType :
VALUETYPE vt = new VALUETYPE ();
vt.Type = Utilities.GetMetadataToken(CodedIndex.TypeDefOrRef,
(uint) Utilities.ReadCompressedInteger (data, start, out start));
return vt;
case ElementType.Class :
CLASS c = new CLASS ();
c.Type = Utilities.GetMetadataToken (CodedIndex.TypeDefOrRef,
(uint) Utilities.ReadCompressedInteger (data, start, out start));
return c;
case ElementType.Ptr :
PTR p = new PTR ();
int buf = start;
int flag = Utilities.ReadCompressedInteger (data, start, out start);
p.Void = flag == (int) ElementType.Void;
if (p.Void)
return p;
start = buf;
p.CustomMods = ReadCustomMods (data, start, out start);
p.PtrType = ReadType (data, start, out start);
return p;
case ElementType.FnPtr :
FNPTR fp = new FNPTR ();
if ((data [start] & 0x5) != 0) {
MethodRefSig mr = new MethodRefSig ((uint) start);
ReadMethodRefSig (mr, data, start, out start);
fp.Method = mr;
} else {
MethodDefSig md = new MethodDefSig ((uint) start);
ReadMethodDefSig (md, data, start, out start);
fp.Method = md;
}
return fp;
case ElementType.Array :
ARRAY ary = new ARRAY ();
ary.CustomMods = ReadCustomMods (data, start, out start);
ArrayShape shape = new ArrayShape ();
ary.Type = ReadType (data, start, out start);
shape.Rank = Utilities.ReadCompressedInteger (data, start, out start);
shape.NumSizes = Utilities.ReadCompressedInteger (data, start, out start);
shape.Sizes = new int [shape.NumSizes];
for (int i = 0; i < shape.NumSizes; i++)
shape.Sizes [i] = Utilities.ReadCompressedInteger (data, start, out start);
shape.NumLoBounds = Utilities.ReadCompressedInteger (data, start, out start);
shape.LoBounds = new int [shape.NumLoBounds];
for (int i = 0; i < shape.NumLoBounds; i++)
shape.LoBounds [i] = Utilities.ReadCompressedInteger (data, start, out start);
ary.Shape = shape;
return ary;
case ElementType.SzArray :
SZARRAY sa = new SZARRAY ();
sa.CustomMods = ReadCustomMods (data, start, out start);
sa.Type = ReadType (data, start, out start);
return sa;
case ElementType.Var:
return new VAR (Utilities.ReadCompressedInteger (data, start, out start));
case ElementType.MVar:
return new MVAR (Utilities.ReadCompressedInteger (data, start, out start));
case ElementType.GenericInst:
GENERICINST ginst = new GENERICINST ();
ginst.ValueType = ((ElementType) Utilities.ReadCompressedInteger (
data, start, out start)) == ElementType.ValueType;
ginst.Type = Utilities.GetMetadataToken (CodedIndex.TypeDefOrRef,
(uint) Utilities.ReadCompressedInteger (data, start, out start));
ginst.Signature = ReadGenericInstSignature (data, start, out start);
return ginst;
default :
return new SigType (element);
}
}