private void WriteOperand(
Instruction instruction)
{
var opcode = instruction.OpCode;
var operandType = opcode.OperandType;
if (operandType == OperandType.InlineNone)
{
return;
}
var operand = instruction.Operand;
if (operand == null)
{
throw new ArgumentException();
}
switch (operandType)
{
case OperandType.InlineSwitch:
{
var targets = (Instruction[])operand;
_writer.WriteByte((Byte)targets.Length);
var diff = instruction.Offset + opcode.Size + 2 * targets.Length + 1;
foreach (var item in targets)
{
_writer.WriteInt16((Int16)(GetTargetOffset(item) - diff));
}
break;
}
case OperandType.ShortInlineBrTarget:
{
var target = (Instruction)operand;
_writer.WriteSByte((SByte)
(GetTargetOffset(target) - (instruction.Offset + opcode.Size + 1)));
break;
}
case OperandType.InlineBrTarget:
{
var target = (Instruction)operand;
_writer.WriteInt16((Int16)
(GetTargetOffset(target) - (instruction.Offset + opcode.Size + 2)));
break;
}
case OperandType.ShortInlineVar:
_writer.WriteByte((byte)GetVariableIndex((VariableDefinition)operand));
break;
case OperandType.ShortInlineArg:
_writer.WriteByte((byte)GetParameterIndex((ParameterDefinition)operand));
break;
case OperandType.InlineVar:
_writer.WriteInt16((short)GetVariableIndex((VariableDefinition)operand));
break;
case OperandType.InlineArg:
_writer.WriteInt16((short)GetParameterIndex((ParameterDefinition)operand));
break;
case OperandType.InlineSig:
// TODO: implement this properly after finding when such code is generated
//WriteMetadataToken (GetStandAloneSignature ((CallSite) operand));
break;
case OperandType.ShortInlineI:
if (opcode == OpCodes.Ldc_I4_S)
{
_writer.WriteSByte((SByte)operand);
}
else
{
_writer.WriteByte((Byte)operand);
}
break;
case OperandType.InlineI:
_writer.WriteInt32((Int32)operand);
break;
case OperandType.InlineI8:
_writer.WriteInt64((Int64)operand);
break;
case OperandType.ShortInlineR:
_writer.WriteSingle((Single)operand);
break;
case OperandType.InlineR:
_writer.WriteDouble((Double)operand);
break;
case OperandType.InlineString:
var stringReferenceId = _stringTable.GetOrCreateStringId((String)operand, false);
_writer.WriteUInt16(stringReferenceId);
break;
case OperandType.InlineMethod:
_writer.WriteUInt16(_context.GetMethodReferenceId((MethodReference)operand));
break;
case OperandType.InlineType:
_writer.WriteUInt16(GetTypeReferenceId((TypeReference)operand));
break;
case OperandType.InlineField:
_writer.WriteUInt16(GetFieldReferenceId((FieldReference)operand));
break;
case OperandType.InlineTok:
_writer.WriteUInt32(GetMetadataToken((IMetadataTokenProvider)operand));
break;
default:
throw new ArgumentException();
}
}
