/// <summary>
/// Parses the generic instance.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <param name="index">The index.</param>
/// <returns></returns>
private static SigType ParseGenericInstance(byte[] buffer, ref int index)
{
SigType originalType;
CilElementType type = (CilElementType)buffer[index++];
switch (type)
{
case CilElementType.Class:
originalType = ParseClassSignature(buffer, ref index);
break;
case CilElementType.ValueType:
originalType = ParseValueType(buffer, ref index);
break;
default:
throw new InvalidOperationException("Invalid signature type.");
}
int genArgCount = Utilities.ReadCompressedInt32(buffer, ref index);
SigType[] genArgs = new SigType[genArgCount];
for (int i = 0; i < genArgCount; i++)
{
genArgs[i] = ParseTypeSignature(buffer, ref index);
}
return(new GenericInstSigType(originalType, genArgs));
}
/// <summary>
/// Parses the generic instance.
/// </summary>
/// <param name="reader">The reader.</param>
/// <returns></returns>
private static SigType ParseGenericInstance(SignatureReader reader)
{
TypeSigType originalType;
CilElementType type = (CilElementType)reader.ReadByte();
switch (type)
{
case CilElementType.Class:
originalType = ParseClassSignature(reader);
break;
case CilElementType.ValueType:
originalType = ParseValueType(reader);
break;
default:
throw new InvalidOperationException(@"Invalid signature type.");
}
int genArgCount = reader.ReadCompressedInt32();
SigType[] genArgs = new SigType[genArgCount];
for (int i = 0; i < genArgCount; i++)
{
genArgs[i] = ParseTypeSignature(reader);
}
return(new GenericInstSigType(originalType, genArgs));
}
/// <summary>
/// Initializes a new instance of the <see cref="VariableSignature"/> class.
/// </summary>
/// <param name="provider">The provider.</param>
/// <param name="token">The token.</param>
public VariableSignature(VariableSignature signature)
: base(signature)
{
this.customMods = signature.customMods;
this.modifier = signature.modifier;
this.type = signature.type;
}
/// <summary>
/// Initializes a new instance of the <see cref="VariableSignature"/> class.
/// </summary>
/// <param name="provider">The provider.</param>
/// <param name="token">The token.</param>
public VariableSignature(VariableSignature signature)
: base(signature)
{
this.customMods = signature.customMods;
this.modifier = signature.modifier;
this.type = signature.type;
}
/// <summary>
/// Parses the modifier.
/// </summary>
/// <param name="reader">The reader.</param>
private void ParseModifier(SignatureReader reader)
{
CilElementType value = (CilElementType)reader.PeekByte();
if (value == CilElementType.Pinned)
{
Modifier = value;
reader.SkipByte();
}
}
/// <summary>
/// Reads the specified token.
/// </summary>
/// <param name="token">The token.</param>
/// <param name="result">The result.</param>
public void Read(TokenTypes token, out ConstantRow result)
{
if ((token & TokenTypes.TableMask) != TokenTypes.Constant)
{
throw new ArgumentException("Invalid token type for ConstantRow.", "token");
}
using (BinaryReader reader = CreateReaderForToken(token))
{
CilElementType cet = (CilElementType)reader.ReadByte();
reader.ReadByte();
result = new ConstantRow(cet, ReadIndexValue(reader, IndexType.HasConstant), ReadIndexValue(reader, IndexType.BlobHeap));
}
}
/// <summary>
/// Parses the custom mods.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <param name="index">The index.</param>
/// <returns></returns>
public static CustomMod[] ParseCustomMods(byte[] buffer, ref int index)
{
List <CustomMod> mods = new List <CustomMod>();
for (int i = index; i < buffer.Length; i++)
{
CilElementType type = (CilElementType)buffer[i++];
if (type != CilElementType.Optional && type != CilElementType.Required)
{
break;
}
index++;
TokenTypes modType = SigType.ReadTypeDefOrRefEncoded(buffer, ref index);
mods.Add(new CustomMod((CustomModType)(type - CilElementType.Required + 1), modType));
}
return(mods.ToArray());
}
/// <summary>
/// Reads the specified token.
/// </summary>
/// <param name="token">The token.</param>
/// <returns></returns>
public ConstantRow ReadConstantRow(Token token)
{
if (token.Table != TableType.Constant)
{
throw new ArgumentException("Invalid token type for ConstantRow.", @"token");
}
using (BinaryReader reader = CreateReaderForToken(token))
{
CilElementType cet = (CilElementType)reader.ReadByte();
reader.ReadByte();
return(new ConstantRow(
cet,
ReadMetadataToken(reader, IndexType.HasConstant),
ReadHeapToken(reader, IndexType.BlobHeap)
));
}
}
/// <summary>
/// Parses the custom mods.
/// </summary>
/// <param name="reader">The reader.</param>
/// <returns></returns>
public static CustomMod[] ParseCustomMods(SignatureReader reader)
{
List <CustomMod> mods = new List <CustomMod>();
while (reader.Index != reader.Length)
{
CilElementType type = (CilElementType)reader.PeekByte();
if (type != CilElementType.Optional && type != CilElementType.Required)
{
break;
}
reader.SkipByte();
Token modType = reader.ReadEncodedTypeDefOrRef();
mods.Add(new CustomMod((CustomModType)(type - CilElementType.Required + 1), modType));
}
return(mods.ToArray());
}
/// <summary>
/// Initializes a new instance of the <see cref="ConstantRow" /> struct.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="parent">The parent.</param>
/// <param name="value">The value.</param>
public ConstantRow(CilElementType type, Token parent, HeapIndexToken value)
{
Type = type;
Parent = parent;
Value = value;
}
/// <summary>
/// Initializes a new instance of the <see cref="SigType"/> class.
/// </summary>
/// <param name="type">The type.</param>
public SigType(CilElementType type)
{
_type = type;
}
/// <summary>
/// Initializes a new instance of the <see cref="ConstantRow" /> struct.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="parent">The parent.</param>
/// <param name="value">The value.</param>
public ConstantRow(CilElementType type, Token parent, HeapIndexToken value)
{
Type = type;
Parent = parent;
Value = value;
}
/// <summary>
/// Parses the type signature.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <param name="index">The index.</param>
/// <returns></returns>
public static SigType ParseTypeSignature(byte[] buffer, ref int index)
{
SigType result;
CilElementType type = (CilElementType)buffer[index++];
switch (type)
{
case CilElementType.Void:
result = new SigType(type);
break;
case CilElementType.Boolean:
goto case CilElementType.Void;
case CilElementType.Char:
goto case CilElementType.Void;
case CilElementType.I1:
goto case CilElementType.Void;
case CilElementType.U1:
goto case CilElementType.Void;
case CilElementType.I2:
goto case CilElementType.Void;
case CilElementType.U2:
goto case CilElementType.Void;
case CilElementType.I4:
goto case CilElementType.Void;
case CilElementType.U4:
goto case CilElementType.Void;
case CilElementType.I8:
goto case CilElementType.Void;
case CilElementType.U8:
goto case CilElementType.Void;
case CilElementType.R4:
goto case CilElementType.Void;
case CilElementType.R8:
goto case CilElementType.Void;
case CilElementType.String:
goto case CilElementType.Void;
case CilElementType.Object:
goto case CilElementType.Void;
case CilElementType.I:
goto case CilElementType.Void;
case CilElementType.U:
goto case CilElementType.Void;
case CilElementType.TypedByRef:
goto case CilElementType.Void;
case CilElementType.Array:
result = ParseArraySignature(buffer, ref index);
break;
case CilElementType.Class:
result = ParseClassSignature(buffer, ref index);
break;
case CilElementType.FunctionPtr:
result = ParseFunctionPointer(buffer, ref index);
break;
case CilElementType.GenericInst:
result = ParseGenericInstance(buffer, ref index);
break;
case CilElementType.MVar:
result = ParseMVar(buffer, ref index);
break;
case CilElementType.Ptr:
result = ParsePointer(buffer, ref index);
break;
case CilElementType.SZArray:
result = ParseSZArraySignature(buffer, ref index);
break;
case CilElementType.ValueType:
result = ParseValueType(buffer, ref index);
break;
case CilElementType.Var:
result = ParseVar(buffer, ref index);
break;
case CilElementType.ByRef:
result = ParseReference(buffer, ref index);
break;
default:
throw new NotSupportedException("Unsupported CIL element type: " + type);
}
return(result);
}
/// <summary>
/// Initializes a new instance of the <see cref="ConstantRow"/> struct.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="parent">The parent.</param>
/// <param name="value">The value BLOB idx.</param>
public ConstantRow(CilElementType type, Token parent, HeapIndexToken value)
{
this.type = type;
this.parent = parent;
this.value = value;
}
private void ParseModifier(SignatureReader reader)
{
CilElementType value = (CilElementType)reader.PeekByte();
if (value == CilElementType.Pinned)
{
this.modifier = value;
reader.SkipByte();
}
}
public TypeSigType(Token token, CilElementType type) :
base(type)
{
this.token = token;
}
//public static readonly BuiltInSigType Ptr = new BuiltInSigType(CilElementType.Ptr);
internal BuiltInSigType(CilElementType type) :
base(type)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="SigType"/> class.
/// </summary>
/// <param name="type">The type.</param>
public SigType(CilElementType type)
{
this.Type = type;
}
//public static readonly BuiltInSigType Ptr = new BuiltInSigType(CilElementType.Ptr);
internal BuiltInSigType(CilElementType type)
: base(type)
{
}
/// <summary>
/// Gets the return registers.
/// </summary>
/// <param name="returnType">Type of the return.</param>
/// <returns></returns>
Register[] ICallingConvention.GetReturnRegisters(CilElementType returnType)
{
return null;
}
/// <summary>
/// Converts a <see cref="CilElementType"/> to <see cref="ConvType"/>.
/// </summary>
/// <param name="cet">The CilElementType to convert.</param>
/// <returns>The equivalent ConvType.</returns>
/// <exception cref="T:System.NotSupportedException"><paramref name="cet"/> can't be converted.</exception>
private ConvType ConvTypeFromCilType(CilElementType cet)
{
switch (cet) {
case CilElementType.Char:
return ConvType.U2;
case CilElementType.I1:
return ConvType.I1;
case CilElementType.I2:
return ConvType.I2;
case CilElementType.I4:
return ConvType.I4;
case CilElementType.I8:
return ConvType.I8;
case CilElementType.U1:
return ConvType.U1;
case CilElementType.U2:
return ConvType.U2;
case CilElementType.U4:
return ConvType.U4;
case CilElementType.U8:
return ConvType.U8;
case CilElementType.R4:
return ConvType.R4;
case CilElementType.R8:
return ConvType.R8;
case CilElementType.I:
return ConvType.I;
case CilElementType.U:
return ConvType.U;
case CilElementType.Ptr:
return ConvType.Ptr;
}
// Requested CilElementType is not supported
throw new NotSupportedException ();
}
public TypeSigType(Token token, CilElementType type)
: base(type)
{
this.token = token;
}
/// <summary>
/// Initializes a new instance of the <see cref="ConstantRow"/> struct.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="parent">The parent.</param>
/// <param name="valueBlobIdx">The value BLOB idx.</param>
public ConstantRow(CilElementType type, TokenTypes parent, TokenTypes valueBlobIdx)
{
_type = type;
_parent = parent;
_valueBlobIdx = valueBlobIdx;
}
private static bool MustSignExtendOnLoad(CilElementType elementType)
{
return (elementType == CilElementType.I1 || elementType == CilElementType.I2);
}
public BuiltInSigType(string typeName, CilElementType type) :
base(type)
{
this.typeName = typeName;
}
private static bool MustZeroExtendOnLoad(CilElementType elementType)
{
return (elementType == CilElementType.U1 || elementType == CilElementType.U2 || elementType == CilElementType.Char);
}
public BuiltInSigType(string typeName, CilElementType type)
: base(type)
{
this.typeName = typeName;
}
/// <summary>
/// Parses the type signature.
/// </summary>
/// <param name="reader">The reader.</param>
/// <returns></returns>
public static SigType ParseTypeSignature(SignatureReader reader)
{
CilElementType type = (CilElementType)reader.ReadByte();
switch (type)
{
case CilElementType.Void:
return(BuiltInSigType.Void);
case CilElementType.Boolean:
return(BuiltInSigType.Boolean);
case CilElementType.Char:
return(BuiltInSigType.Char);
case CilElementType.I1:
return(BuiltInSigType.SByte);
case CilElementType.U1:
return(BuiltInSigType.Byte);
case CilElementType.I2:
return(BuiltInSigType.Int16);
case CilElementType.U2:
return(BuiltInSigType.UInt16);
case CilElementType.I4:
return(BuiltInSigType.Int32);
case CilElementType.U4:
return(BuiltInSigType.UInt32);
case CilElementType.I8:
return(BuiltInSigType.Int64);
case CilElementType.U8:
return(BuiltInSigType.UInt64);
case CilElementType.R4:
return(BuiltInSigType.Single);
case CilElementType.R8:
return(BuiltInSigType.Double);
case CilElementType.String:
return(BuiltInSigType.String);
case CilElementType.Object:
return(BuiltInSigType.Object);
case CilElementType.I:
return(BuiltInSigType.IntPtr);
case CilElementType.U:
return(BuiltInSigType.UIntPtr);
case CilElementType.TypedByRef:
return(BuiltInSigType.TypedByRef);
case CilElementType.Array:
return(ParseArraySignature(reader));
case CilElementType.Class:
return(ParseClassSignature(reader));
case CilElementType.FunctionPtr:
return(ParseFunctionPointer(reader));
case CilElementType.GenericInst:
return(ParseGenericInstance(reader));
case CilElementType.MVar:
return(ParseMVar(reader));
case CilElementType.Ptr:
return(ParsePointer(reader));
case CilElementType.SZArray:
return(ParseSZArraySignature(reader));
case CilElementType.ValueType:
return(ParseValueType(reader));
case CilElementType.Var:
return(ParseVar(reader));
case CilElementType.ByRef:
return(ParseReference(reader));
default:
throw new NotSupportedException(@"Unsupported CIL element type: " + type);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="ConstantRow"/> struct.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="parent">The parent.</param>
/// <param name="value">The value BLOB idx.</param>
public ConstantRow(CilElementType type, Token parent, HeapIndexToken value)
{
this.type = type;
this.parent = parent;
this.value = value;
}
/// <summary>
/// Initializes a new instance of the <see cref="SigType"/> class.
/// </summary>
/// <param name="type">The type.</param>
public SigType(CilElementType type)
{
this.type = type;
}
private static bool MustSignExtendOnLoad(CilElementType elementType)
{
return(elementType == CilElementType.I1 || elementType == CilElementType.I2);
}
/// <summary>
/// Initializes a new instance of the <see cref="ConstantRow"/> struct.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="parent">The parent.</param>
/// <param name="valueBlobIdx">The value BLOB idx.</param>
public ConstantRow(CilElementType type, TokenTypes parent, TokenTypes valueBlobIdx)
{
_type = type;
_parent = parent;
_valueBlobIdx = valueBlobIdx;
}
private static bool MustZeroExtendOnLoad(CilElementType elementType)
{
return(elementType == CilElementType.U1 || elementType == CilElementType.U2 || elementType == CilElementType.Char);
}
/// <summary>
/// Gets the return registers.
/// </summary>
/// <param name="returnType">Type of the return.</param>
/// <returns></returns>
Register[] ICallingConvention.GetReturnRegisters(CilElementType returnType)
{
if (returnType == CilElementType.Void)
return ReturnVoidRegisters;
if (returnType == CilElementType.R4 || returnType == CilElementType.R8)
return ReturnFPRegisters;
if (returnType == CilElementType.I8 || returnType == CilElementType.U8)
return Return64BitRegisters;
return Return32BitRegisters;
}
private StackTypeCode FromSigType(CilElementType type)
{
switch (type)
{
case CilElementType.I1: goto case CilElementType.U4;
case CilElementType.I2: goto case CilElementType.U4;
case CilElementType.I4: goto case CilElementType.U4;
case CilElementType.U1: goto case CilElementType.U4;
case CilElementType.U2: goto case CilElementType.U4;
case CilElementType.U4: return StackTypeCode.Int32;
}
throw new NotSupportedException();
}
