public static void SimplifyMacros(this MethodBody self)
{
if (self == null)
throw new ArgumentNullException ("self");
foreach (var instruction in self.Instructions) {
if (instruction.OpCode.OpCodeType != OpCodeType.Macro)
continue;
switch (instruction.OpCode.Code) {
case Code.Ldarg_0:
ExpandMacro (instruction, OpCodes.Ldarg, self.GetParameter (0));
break;
case Code.Ldarg_1:
ExpandMacro (instruction, OpCodes.Ldarg, self.GetParameter (1));
break;
case Code.Ldarg_2:
ExpandMacro (instruction, OpCodes.Ldarg, self.GetParameter (2));
break;
case Code.Ldarg_3:
ExpandMacro (instruction, OpCodes.Ldarg, self.GetParameter (3));
break;
case Code.Ldloc_0:
ExpandMacro (instruction, OpCodes.Ldloc, self.Variables [0]);
break;
case Code.Ldloc_1:
ExpandMacro (instruction, OpCodes.Ldloc, self.Variables [1]);
break;
case Code.Ldloc_2:
ExpandMacro (instruction, OpCodes.Ldloc, self.Variables [2]);
break;
case Code.Ldloc_3:
ExpandMacro (instruction, OpCodes.Ldloc, self.Variables [3]);
break;
case Code.Stloc_0:
ExpandMacro (instruction, OpCodes.Stloc, self.Variables [0]);
break;
case Code.Stloc_1:
ExpandMacro (instruction, OpCodes.Stloc, self.Variables [1]);
break;
case Code.Stloc_2:
ExpandMacro (instruction, OpCodes.Stloc, self.Variables [2]);
break;
case Code.Stloc_3:
ExpandMacro (instruction, OpCodes.Stloc, self.Variables [3]);
break;
case Code.Ldarg_S:
instruction.OpCode = OpCodes.Ldarg;
break;
case Code.Ldarga_S:
instruction.OpCode = OpCodes.Ldarga;
break;
case Code.Starg_S:
instruction.OpCode = OpCodes.Starg;
break;
case Code.Ldloc_S:
instruction.OpCode = OpCodes.Ldloc;
break;
case Code.Ldloca_S:
instruction.OpCode = OpCodes.Ldloca;
break;
case Code.Stloc_S:
instruction.OpCode = OpCodes.Stloc;
break;
case Code.Ldc_I4_M1:
ExpandMacro (instruction, OpCodes.Ldc_I4, -1);
break;
case Code.Ldc_I4_0:
ExpandMacro (instruction, OpCodes.Ldc_I4, 0);
break;
case Code.Ldc_I4_1:
ExpandMacro (instruction, OpCodes.Ldc_I4, 1);
break;
case Code.Ldc_I4_2:
ExpandMacro (instruction, OpCodes.Ldc_I4, 2);
break;
case Code.Ldc_I4_3:
ExpandMacro (instruction, OpCodes.Ldc_I4, 3);
break;
case Code.Ldc_I4_4:
ExpandMacro (instruction, OpCodes.Ldc_I4, 4);
break;
case Code.Ldc_I4_5:
ExpandMacro (instruction, OpCodes.Ldc_I4, 5);
break;
case Code.Ldc_I4_6:
ExpandMacro (instruction, OpCodes.Ldc_I4, 6);
break;
case Code.Ldc_I4_7:
ExpandMacro (instruction, OpCodes.Ldc_I4, 7);
break;
case Code.Ldc_I4_8:
ExpandMacro (instruction, OpCodes.Ldc_I4, 8);
break;
case Code.Ldc_I4_S:
ExpandMacro (instruction, OpCodes.Ldc_I4, (int) (sbyte) instruction.Operand);
break;
case Code.Br_S:
instruction.OpCode = OpCodes.Br;
break;
case Code.Brfalse_S:
instruction.OpCode = OpCodes.Brfalse;
break;
case Code.Brtrue_S:
instruction.OpCode = OpCodes.Brtrue;
break;
case Code.Beq_S:
instruction.OpCode = OpCodes.Beq;
break;
case Code.Bge_S:
instruction.OpCode = OpCodes.Bge;
break;
case Code.Bgt_S:
instruction.OpCode = OpCodes.Bgt;
break;
case Code.Ble_S:
instruction.OpCode = OpCodes.Ble;
break;
case Code.Blt_S:
instruction.OpCode = OpCodes.Blt;
break;
case Code.Bne_Un_S:
instruction.OpCode = OpCodes.Bne_Un;
break;
case Code.Bge_Un_S:
instruction.OpCode = OpCodes.Bge_Un;
break;
case Code.Bgt_Un_S:
instruction.OpCode = OpCodes.Bgt_Un;
break;
case Code.Ble_Un_S:
instruction.OpCode = OpCodes.Ble_Un;
break;
case Code.Blt_Un_S:
instruction.OpCode = OpCodes.Blt_Un;
break;
case Code.Leave_S:
instruction.OpCode = OpCodes.Leave;
break;
}
}
}