/// <summary>
/// Makes a copy of the instruction with a new opcode.
/// </summary>
/// <param name="newOpcode">The new opcode</param>
/// <returns>The copy</returns>
public MsilInstruction CopyWith(OpCode newOpcode)
{
var result = new MsilInstruction(newOpcode);
Operand?.CopyTo(result.Operand);
foreach (MsilLabel x in Labels)
{
result.Labels.Add(x);
}
result.TryCatchOperation = TryCatchOperation;
return(result);
}
/// <summary>
/// Gets the constant int this instruction pushes onto the stack.
/// </summary>
/// <param name="m">Instruction</param>
/// <returns>The constant int</returns>
public static int GetConstInt(this MsilInstruction m)
{
if (m.OpCode == OpCodes.Ldc_I4_0)
{
return(0);
}
if (m.OpCode == OpCodes.Ldc_I4_1)
{
return(1);
}
if (m.OpCode == OpCodes.Ldc_I4_2)
{
return(2);
}
if (m.OpCode == OpCodes.Ldc_I4_3)
{
return(3);
}
if (m.OpCode == OpCodes.Ldc_I4_4)
{
return(4);
}
if (m.OpCode == OpCodes.Ldc_I4_5)
{
return(5);
}
if (m.OpCode == OpCodes.Ldc_I4_6)
{
return(6);
}
if (m.OpCode == OpCodes.Ldc_I4_7)
{
return(7);
}
if (m.OpCode == OpCodes.Ldc_I4_8)
{
return(8);
}
if (m.OpCode == OpCodes.Ldc_I4_M1)
{
return(-1);
}
if (m.OpCode == OpCodes.Ldc_I4)
{
return(((MsilOperandInline <int>)m.Operand).Value);
}
if (m.OpCode == OpCodes.Ldc_I4_S)
{
return(((MsilOperandInline <byte>)m.Operand).Value);
}
throw new ArgumentException($"Can't get constant int from instruction {m}");
}
/// <summary>
/// Determines if this instruction is a constant int load instruction.
/// </summary>
/// <param name="m">Instruction</param>
/// <returns>True if this instruction pushes a constant int onto the stack</returns>
public static bool IsConstIntLoad(this MsilInstruction m)
{
if (m.OpCode == OpCodes.Ldc_I4_0)
{
return(true);
}
if (m.OpCode == OpCodes.Ldc_I4_1)
{
return(true);
}
if (m.OpCode == OpCodes.Ldc_I4_2)
{
return(true);
}
if (m.OpCode == OpCodes.Ldc_I4_3)
{
return(true);
}
if (m.OpCode == OpCodes.Ldc_I4_4)
{
return(true);
}
if (m.OpCode == OpCodes.Ldc_I4_5)
{
return(true);
}
if (m.OpCode == OpCodes.Ldc_I4_6)
{
return(true);
}
if (m.OpCode == OpCodes.Ldc_I4_7)
{
return(true);
}
if (m.OpCode == OpCodes.Ldc_I4_8)
{
return(true);
}
if (m.OpCode == OpCodes.Ldc_I4_M1)
{
return(true);
}
if (m.OpCode == OpCodes.Ldc_I4)
{
return(true);
}
return(m.OpCode == OpCodes.Ldc_I4_S);
}
/// <summary>
/// For a local referencing opcode, get the local it is referencing.
/// </summary>
public static MsilLocal GetReferencedLocal(this MsilInstruction me)
{
if (me.Operand is MsilOperandInline.MsilOperandLocal mol)
{
return(mol.Value);
}
if (me.OpCode == OpCodes.Stloc_0 || me.OpCode == OpCodes.Ldloc_0)
{
return(new MsilLocal(0));
}
if (me.OpCode == OpCodes.Stloc_1 || me.OpCode == OpCodes.Ldloc_1)
{
return(new MsilLocal(1));
}
if (me.OpCode == OpCodes.Stloc_2 || me.OpCode == OpCodes.Ldloc_2)
{
return(new MsilLocal(2));
}
if (me.OpCode == OpCodes.Stloc_3 || me.OpCode == OpCodes.Ldloc_3)
{
return(new MsilLocal(3));
}
throw new ArgumentException($"Can't get referenced local in instruction {me}");
}
/// <summary>
/// For an argument referencing opcode, get the index of the local it is referencing.
/// </summary>
public static MsilArgument GetReferencedArgument(this MsilInstruction me)
{
if (me.Operand is MsilOperandInline.MsilOperandArgument mol)
{
return(mol.Value);
}
if (me.OpCode == OpCodes.Ldarg_0)
{
return(new MsilArgument(0));
}
if (me.OpCode == OpCodes.Ldarg_1)
{
return(new MsilArgument(1));
}
if (me.OpCode == OpCodes.Ldarg_2)
{
return(new MsilArgument(2));
}
if (me.OpCode == OpCodes.Ldarg_3)
{
return(new MsilArgument(3));
}
throw new ArgumentException($"Can't get referenced argument in instruction {me}");
}
internal MsilOperandLocal(MsilInstruction instruction) : base(instruction)
{
}
internal MsilOperandArgument(MsilInstruction instruction) : base(instruction)
{
}
internal MsilOperandSignature(MsilInstruction instruction) : base(instruction)
{
}
internal MsilOperandString(MsilInstruction instruction) : base(instruction)
{
}
internal MsilOperandDouble(MsilInstruction instruction) : base(instruction)
{
}
internal MsilOperandSingle(MsilInstruction instruction) : base(instruction)
{
}
internal MsilOperandSwitch(MsilInstruction instruction) : base(instruction)
{
}
/// <summary>
/// Is this instruction a local store instruction.
/// </summary>
public static bool IsLocalStore(this MsilInstruction me)
{
return(me.OpCode.IsLocalStore());
}
internal MsilOperandBrTarget(MsilInstruction instruction) : base(instruction)
{
}
/// <summary>
/// Is this instruction an argument load-by-value instruction.
/// </summary>
public static bool IsArgumentLoad(this MsilInstruction me)
{
return(me.OpCode == OpCodes.Ldarg || me.OpCode == OpCodes.Ldarg_S || me.OpCode == OpCodes.Ldarg_0 ||
me.OpCode == OpCodes.Ldarg_1 || me.OpCode == OpCodes.Ldarg_2 || me.OpCode == OpCodes.Ldarg_3);
}
/// <summary>
/// Is this instruction a local load-by-reference instruction.
/// </summary>
public static bool IsLocalLoadByRef(this MsilInstruction me)
{
return(me.OpCode.IsLocalLoadByRef());
}
/// <summary>
/// Is this instruction an argument load-by-reference instruction.
/// </summary>
public static bool IsArgumentLoadByRef(this MsilInstruction me)
{
return(me.OpCode == OpCodes.Ldarga || me.OpCode == OpCodes.Ldarga_S);
}
internal MsilOperandReflected(MsilInstruction instruction) : base(instruction)
{
}
protected MsilOperand(MsilInstruction instruction)
{
Instruction = instruction;
}
internal MsilOperandInt32(MsilInstruction instruction) : base(instruction)
{
}
/// <summary>
/// Is this instruction an argument store instruction.
/// </summary>
public static bool IsArgumentStore(this MsilInstruction me)
{
return(me.OpCode == OpCodes.Starg || me.OpCode == OpCodes.Starg_S);
}