public Instruction Create(OpCode opCode)
{
try
{
var instruction = _il.Create(opCode);
MethodLocals.MapMacroInstruction(Locals, instruction);
return(instruction);
}
catch (ArgumentException)
{
throw ExceptionInvalidOperand(opCode);
}
}
public Instruction CreateConst(OpCode opCode, object operand)
{
try
{
switch (opCode.OperandType)
{
case OperandType.InlineI:
operand = Convert.ToInt32(operand);
break;
case OperandType.InlineI8:
operand = Convert.ToInt64(operand);
break;
case OperandType.InlineR:
operand = Convert.ToDouble(operand);
break;
case OperandType.InlineVar:
case OperandType.InlineArg:
// It's an uint16 but Cecil expects int32
operand = Convert.ToInt32(operand);
break;
case OperandType.ShortInlineI:
operand = opCode == OpCodes.Ldc_I4_S
? Convert.ToSByte(operand)
: (object)Convert.ToByte(operand);
break;
case OperandType.ShortInlineR:
operand = Convert.ToSingle(operand);
break;
case OperandType.ShortInlineVar:
case OperandType.ShortInlineArg:
operand = Convert.ToByte(operand);
break;
}
switch (operand)
{
case int value:
{
if (MethodLocals.MapIndexInstruction(Locals, ref opCode, value, out var localVar))
{
return(Create(opCode, localVar));
}
return(_il.Create(opCode, value));
}
case byte value:
{
if (MethodLocals.MapIndexInstruction(Locals, ref opCode, value, out var localVar))
{
return(Create(opCode, localVar));
}
return(_il.Create(opCode, value));
}
case sbyte value:
return(_il.Create(opCode, value));
case long value:
return(_il.Create(opCode, value));
case double value:
return(_il.Create(opCode, value));
case short value:
return(_il.Create(opCode, value));
case float value:
return(_il.Create(opCode, value));
case string value:
return(_il.Create(opCode, value));
default:
throw new WeavingException($"Unexpected operand for instruction {opCode}: {operand}");
}
}
catch (ArgumentException)
{
throw ExceptionInvalidOperand(opCode);
}
}