internal static void ReadLocalVarSig(ModuleReader module, ByteReader br, IGenericContext context, List <LocalVariableInfo> list)
{
if (br.Length < 2 || br.ReadByte() != LOCAL_SIG)
{
throw new BadImageFormatException("Invalid local variable signature");
}
int count = br.ReadCompressedInt();
for (int i = 0; i < count; i++)
{
if (br.PeekByte() == ELEMENT_TYPE_TYPEDBYREF)
{
br.ReadByte();
list.Add(new LocalVariableInfo(i, module.universe.System_TypedReference, false));
}
else
{
SkipCustomModifiers(br);
bool pinned = false;
if (br.PeekByte() == ELEMENT_TYPE_PINNED)
{
br.ReadByte();
pinned = true;
}
SkipCustomModifiers(br);
Type type = ReadTypeOrByRef(module, br, context);
list.Add(new LocalVariableInfo(i, type, pinned));
}
}
}
protected static void ReadCustomModifiers(ModuleReader module, ByteReader br, IGenericContext context, out Type[] requiredCustomModifiers, out Type[] optionalCustomModifiers)
{
byte b = br.PeekByte();
if (IsCustomModifier(b))
{
List <Type> required = new List <Type>();
List <Type> optional = new List <Type>();
while (IsCustomModifier(b))
{
br.ReadByte();
Type type = ReadTypeDefOrRefEncoded(module, br, context);
if (b == ELEMENT_TYPE_CMOD_REQD)
{
required.Add(type);
}
else
{
optional.Add(type);
}
b = br.PeekByte();
}
requiredCustomModifiers = required.ToArray();
optionalCustomModifiers = optional.ToArray();
}
else
{
requiredCustomModifiers = null;
optionalCustomModifiers = null;
}
}
internal static void Skip(ByteReader br)
{
byte b = br.PeekByte();
while (IsCustomModifier(b))
{
br.ReadByte();
br.ReadCompressedInt();
b = br.PeekByte();
}
}
protected static void SkipCustomModifiers(ByteReader br)
{
byte b = br.PeekByte();
while (IsCustomModifier(b))
{
br.ReadByte();
br.ReadCompressedInt();
b = br.PeekByte();
}
}
// this reads just the optional parameter types, from a MethodRefSig
internal static Type[] ReadOptionalParameterTypes(ModuleReader module, ByteReader br)
{
br.ReadByte();
int paramCount = br.ReadCompressedInt();
SkipCustomModifiers(br);
ReadRetType(module, br, null);
for (int i = 0; i < paramCount; i++)
{
if (br.PeekByte() == SENTINEL)
{
br.ReadByte();
Type[] types = new Type[paramCount - i];
for (int j = 0; j < types.Length; j++)
{
SkipCustomModifiers(br);
types[j] = ReadType(module, br, null);
}
return(types);
}
SkipCustomModifiers(br);
ReadType(module, br, null);
}
return(Type.EmptyTypes);
}
internal static void ReadDeclarativeSecurity(Assembly asm, List <CustomAttributeData> list, int action, ByteReader br)
{
Universe u = asm.universe;
if (br.PeekByte() == '.')
{
br.ReadByte();
int count = br.ReadCompressedInt();
for (int j = 0; j < count; j++)
{
Type type = ReadType(asm, br);
ConstructorInfo constructor = type.GetPseudoCustomAttributeConstructor(u.System_Security_Permissions_SecurityAction);
// LAMESPEC there is an additional length here (probably of the named argument list)
byte[] blob = br.ReadBytes(br.ReadCompressedInt());
list.Add(new CustomAttributeData(asm, constructor, action, blob));
}
}
else
{
// .NET 1.x format (xml)
char[] buf = new char[br.Length / 2];
for (int i = 0; i < buf.Length; i++)
{
buf[i] = br.ReadChar();
}
string xml = new String(buf);
ConstructorInfo constructor = u.System_Security_Permissions_PermissionSetAttribute.GetPseudoCustomAttributeConstructor(u.System_Security_Permissions_SecurityAction);
List <CustomAttributeNamedArgument> args = new List <CustomAttributeNamedArgument>();
args.Add(new CustomAttributeNamedArgument(GetProperty(u.System_Security_Permissions_PermissionSetAttribute, "XML", u.System_String),
new CustomAttributeTypedArgument(u.System_String, xml)));
list.Add(new CustomAttributeData(asm.ManifestModule, constructor, new object[] { action }, args));
}
}
// this reads just the optional parameter types, from a MethodRefSig
internal static Type[] ReadOptionalParameterTypes(ModuleReader module, ByteReader br, IGenericContext context, out CustomModifiers[] customModifiers)
{
br.ReadByte();
int paramCount = br.ReadCompressedInt();
CustomModifiers.Skip(br);
ReadRetType(module, br, context);
for (int i = 0; i < paramCount; i++)
{
if (br.PeekByte() == SENTINEL)
{
br.ReadByte();
Type[] types = new Type[paramCount - i];
customModifiers = new CustomModifiers[types.Length];
for (int j = 0; j < types.Length; j++)
{
customModifiers[j] = CustomModifiers.Read(module, br, context);
types[j] = ReadType(module, br, context);
}
return(types);
}
CustomModifiers.Skip(br);
ReadType(module, br, context);
}
customModifiers = Empty <CustomModifiers> .Array;
return(Type.EmptyTypes);
}
internal static MethodSignature ReadSig(ModuleReader module, ByteReader br, IGenericContext context)
{
CallingConventions callingConvention;
int genericParamCount;
Type returnType;
Type[] parameterTypes;
byte flags = br.ReadByte();
switch (flags & 7)
{
case DEFAULT:
callingConvention = CallingConventions.Standard;
break;
case VARARG:
callingConvention = CallingConventions.VarArgs;
break;
default:
throw new BadImageFormatException();
}
if ((flags & HASTHIS) != 0)
{
callingConvention |= CallingConventions.HasThis;
}
if ((flags & EXPLICITTHIS) != 0)
{
callingConvention |= CallingConventions.ExplicitThis;
}
genericParamCount = 0;
if ((flags & GENERIC) != 0)
{
genericParamCount = br.ReadCompressedUInt();
context = new UnboundGenericMethodContext(context);
}
int paramCount = br.ReadCompressedUInt();
CustomModifiers[] modifiers = null;
PackedCustomModifiers.Pack(ref modifiers, 0, CustomModifiers.Read(module, br, context), paramCount + 1);
returnType = ReadRetType(module, br, context);
parameterTypes = new Type[paramCount];
for (int i = 0; i < parameterTypes.Length; i++)
{
if ((callingConvention & CallingConventions.VarArgs) != 0 && br.PeekByte() == SENTINEL)
{
Array.Resize(ref parameterTypes, i);
if (modifiers != null)
{
Array.Resize(ref modifiers, i + 1);
}
break;
}
PackedCustomModifiers.Pack(ref modifiers, i + 1, CustomModifiers.Read(module, br, context), paramCount + 1);
parameterTypes[i] = ReadParam(module, br, context);
}
return(new MethodSignature(returnType, parameterTypes, PackedCustomModifiers.Wrap(modifiers), callingConvention, genericParamCount));
}
private static CustomModifiers ReadCustomModifiers(ModuleReader module, ByteReader br, IGenericContext context)
{
CustomModifiers mods = new CustomModifiers();
byte b = br.PeekByte();
if (IsCustomModifier(b))
{
List <Type> required = new List <Type>();
List <Type> optional = new List <Type>();
while (IsCustomModifier(b))
{
bool req = br.ReadByte() == ELEMENT_TYPE_CMOD_REQD;
Type type = ReadTypeDefOrRefEncoded(module, br, context);
(req ? required : optional).Add(type);
b = br.PeekByte();
}
mods.required = required.ToArray();
mods.optional = optional.ToArray();
}
return(mods);
}
protected static Type ReadParam(ModuleReader module, ByteReader br, IGenericContext context)
{
switch (br.PeekByte())
{
case ELEMENT_TYPE_TYPEDBYREF:
br.ReadByte();
return(module.universe.System_TypedReference);
default:
return(ReadTypeOrByRef(module, br, context));
}
}
private static Type ReadTypeOrVoid(ModuleReader module, ByteReader br, IGenericContext context)
{
if (br.PeekByte() == ELEMENT_TYPE_VOID)
{
br.ReadByte();
return(module.universe.System_Void);
}
else
{
return(ReadType(module, br, context));
}
}
internal static CustomModifiers Read(ModuleReader module, ByteReader br, IGenericContext context)
{
byte b = br.PeekByte();
if (!IsCustomModifier(b))
{
return(new CustomModifiers());
}
List <Type> list = new List <Type>();
Type mode = Initial;
do
{
Type cmod = br.ReadByte() == Signature.ELEMENT_TYPE_CMOD_REQD ? MarkerType.ModReq : MarkerType.ModOpt;
if (mode != cmod)
{
mode = cmod;
list.Add(mode);
}
list.Add(Signature.ReadTypeDefOrRefEncoded(module, br, context));
b = br.PeekByte();
}while (IsCustomModifier(b));
return(new CustomModifiers(list.ToArray()));
}
internal static PropertySignature ReadSig(ModuleReader module, ByteReader br, IGenericContext context)
{
byte flags = br.ReadByte();
if ((flags & PROPERTY) == 0)
{
throw new BadImageFormatException();
}
CallingConventions callingConvention = CallingConventions.Standard;
if ((flags & HASTHIS) != 0)
{
callingConvention |= CallingConventions.HasThis;
}
if ((flags & EXPLICITTHIS) != 0)
{
callingConvention |= CallingConventions.ExplicitThis;
}
Type returnType;
Type[] returnTypeRequiredCustomModifiers;
Type[] returnTypeOptionalCustomModifiers;
Type[] parameterTypes;
Type[][] parameterRequiredCustomModifiers;
Type[][] parameterOptionalCustomModifiers;
int paramCount = br.ReadCompressedInt();
ReadCustomModifiers(module, br, context, out returnTypeRequiredCustomModifiers, out returnTypeOptionalCustomModifiers);
returnType = ReadRetType(module, br, context);
parameterTypes = new Type[paramCount];
parameterRequiredCustomModifiers = null;
parameterOptionalCustomModifiers = null;
for (int i = 0; i < parameterTypes.Length; i++)
{
if (IsCustomModifier(br.PeekByte()))
{
if (parameterOptionalCustomModifiers == null)
{
parameterOptionalCustomModifiers = new Type[parameterTypes.Length][];
parameterRequiredCustomModifiers = new Type[parameterTypes.Length][];
}
ReadCustomModifiers(module, br, context, out parameterRequiredCustomModifiers[i], out parameterOptionalCustomModifiers[i]);
}
parameterTypes[i] = ReadParam(module, br, context);
}
return(new PropertySignature(callingConvention, returnType, returnTypeOptionalCustomModifiers, returnTypeRequiredCustomModifiers,
parameterTypes, parameterOptionalCustomModifiers, parameterRequiredCustomModifiers));
}
private static Type ReadTypeOrByRef(ModuleReader module, ByteReader br, IGenericContext context)
{
if (br.PeekByte() == ELEMENT_TYPE_BYREF)
{
br.ReadByte();
// LAMESPEC it is allowed (by C++/CLI, ilasm and peverify) to have custom modifiers after the BYREF
// (which makes sense, as it is analogous to pointers)
CustomModifiers mods = ReadCustomModifiers(module, br, context);
// C++/CLI generates void& local variables, so we need to use ReadTypeOrVoid here
return(ReadTypeOrVoid(module, br, context).__MakeByRefType(mods.required, mods.optional));
}
else
{
return(ReadType(module, br, context));
}
}
internal static void ReadDeclarativeSecurity(Assembly asm, List <CustomAttributeData> list, int action, ByteReader br)
{
Universe u = asm.universe;
if (br.PeekByte() == '.')
{
br.ReadByte();
int count = br.ReadCompressedInt();
for (int j = 0; j < count; j++)
{
Type type = ReadType(asm, br);
ConstructorInfo constructor;
if (type == u.System_Security_Permissions_HostProtectionAttribute && action == (int)System.Security.Permissions.SecurityAction.LinkDemand)
{
constructor = type.GetConstructor(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, Type.EmptyTypes, null);
}
else
{
constructor = type.GetConstructor(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, new Type[] { u.System_Security_Permissions_SecurityAction }, null);
}
// LAMESPEC there is an additional length here (probably of the named argument list)
ByteReader slice = br.Slice(br.ReadCompressedInt());
// LAMESPEC the count of named arguments is a compressed integer (instead of UInt16 as NumNamed in custom attributes)
list.Add(new CustomAttributeData(constructor, action, ReadNamedArguments(asm, slice, slice.ReadCompressedInt(), type)));
}
}
else
{
// .NET 1.x format (xml)
char[] buf = new char[br.Length / 2];
for (int i = 0; i < buf.Length; i++)
{
buf[i] = br.ReadChar();
}
string xml = new String(buf);
ConstructorInfo constructor = u.System_Security_Permissions_PermissionSetAttribute.GetConstructor(new Type[] { u.System_Security_Permissions_SecurityAction });
List <CustomAttributeNamedArgument> args = new List <CustomAttributeNamedArgument>();
args.Add(new CustomAttributeNamedArgument(u.System_Security_Permissions_PermissionSetAttribute.GetProperty("XML"),
new CustomAttributeTypedArgument(u.System_String, xml)));
list.Add(new CustomAttributeData(constructor, action, args));
}
}
internal static __StandAloneMethodSig ReadStandAloneMethodSig(ModuleReader module, ByteReader br, IGenericContext context)
{
CallingConventions callingConvention = 0;
System.Runtime.InteropServices.CallingConvention unmanagedCallingConvention = 0;
bool unmanaged;
byte flags = br.ReadByte();
switch (flags & 7)
{
case DEFAULT:
callingConvention = CallingConventions.Standard;
unmanaged = false;
break;
case 0x01: // C
unmanagedCallingConvention = System.Runtime.InteropServices.CallingConvention.Cdecl;
unmanaged = true;
break;
case 0x02: // STDCALL
unmanagedCallingConvention = System.Runtime.InteropServices.CallingConvention.StdCall;
unmanaged = true;
break;
case 0x03: // THISCALL
unmanagedCallingConvention = System.Runtime.InteropServices.CallingConvention.ThisCall;
unmanaged = true;
break;
case 0x04: // FASTCALL
unmanagedCallingConvention = System.Runtime.InteropServices.CallingConvention.FastCall;
unmanaged = true;
break;
case VARARG:
callingConvention = CallingConventions.VarArgs;
unmanaged = false;
break;
default:
throw new BadImageFormatException();
}
if ((flags & HASTHIS) != 0)
{
callingConvention |= CallingConventions.HasThis;
}
if ((flags & EXPLICITTHIS) != 0)
{
callingConvention |= CallingConventions.ExplicitThis;
}
if ((flags & GENERIC) != 0)
{
throw new BadImageFormatException();
}
int paramCount = br.ReadCompressedInt();
SkipCustomModifiers(br);
Type returnType = ReadRetType(module, br, context);
List <Type> parameterTypes = new List <Type>();
List <Type> optionalParameterTypes = new List <Type>();
List <Type> curr = parameterTypes;
for (int i = 0; i < paramCount; i++)
{
if (br.PeekByte() == SENTINEL)
{
br.ReadByte();
curr = optionalParameterTypes;
}
SkipCustomModifiers(br);
curr.Add(ReadParam(module, br, context));
}
return(new __StandAloneMethodSig(unmanaged, unmanagedCallingConvention, callingConvention, returnType, parameterTypes.ToArray(), optionalParameterTypes.ToArray()));
}
