public static MethodInfo Compile_LdNull()
{
var method = new ILMethod(nameof(ILOpCodeValues.Ldnull));
method.AddInstructions(ILInstruction.Create(OpCodes.Ldnull), ILInstruction.Ret);
return(method.Compile());
}
public void CreateFromOpCodeTest()
{
var noOp = ILInstruction.Create(OpCodes.Nop);
Assert.IsNotNull(noOp);
Assert.IsTrue(noOp.OpCode == OpCodes.Nop);
Assert.IsNull(noOp.Arg);
}
public void CreateFromILOpCodeValuesWithArgTest()
{
var arg = 0;
var ldarga_S = ILInstruction.Create(ILOpCodeValues.Ldarga_S, arg);
Assert.IsNotNull(ldarga_S);
Assert.IsTrue(ldarga_S.OpCode == OpCodes.Ldarga_S);
Assert.IsNotNull(ldarga_S.Arg);
Assert.IsTrue((int)ldarga_S.Arg == arg);
}
public void BuildILInstructionsTest()
{
var opCode1 = OpCodes.Ret;
var instruction = ILInstruction.Create(opCode1);
var instructions = (new[] { instruction }).ToList();
var frame = ILStackFrameBuilder.Build(instructions);
Assert.IsTrue(frame.Stream.Count == 1);
Assert.IsTrue(frame.Stream[0].OpCode == opCode1);
}
public static MethodInfo Compile_Add_Ovf()
{
var method = ILMethodBuilder <int> .Create(nameof(ILOpCodeValues.Add_Ovf));
method.AddInstructions(ILInstruction.Create(OpCodes.Ldc_I4, int.MaxValue),
ILInstruction.Create(OpCodes.Ldc_I4, int.MaxValue),
ILInstruction.Create(OpCodes.Add_Ovf),
ILInstruction.Ret);
return(method.Compile());
}
public void WriteILInstructionTest()
{
var opCode = OpCodes.Nop;
var instruction = ILInstruction.Create(opCode);
var builder = new ILInstructionBuilder();
builder.Write(instruction);
Assert.IsTrue(builder.Instructions.Count == 1);
Assert.IsTrue(builder.Instructions[0].OpCode == opCode);
Assert.IsNull(builder.Instructions[0].Arg);
}
public static MethodInfo Compile_Ldloc_0()
{
var method = new ILMethod(nameof(ILOpCodeValues.Ldloc_0), typeof(int));
method.AddLocals(typeof(int));
method.AddInstructions(
ILInstruction.Create(OpCodes.Ldc_I4_1),
ILInstruction.Create(OpCodes.Stloc_0),
ILInstruction.Create(OpCodes.Ldloc_0),
ILInstruction.Ret);
return(method.Compile());
}
public void WriteILInstructionsTest()
{
var opCode1 = OpCodes.Nop;
var opCode2 = OpCodes.Ret;
var instruction1 = ILInstruction.Create(opCode1);
var instruction2 = ILInstruction.Create(opCode2);
var builder = new ILInstructionBuilder();
builder.Write(instruction1, instruction2);
Assert.IsTrue(builder.Instructions.Count == 2);
Assert.IsTrue(builder.Instructions[0].OpCode == opCode1);
Assert.IsNull(builder.Instructions[0].Arg);
Assert.IsTrue(builder.Instructions[1].OpCode == opCode2);
Assert.IsNull(builder.Instructions[1].Arg);
}
public void ToStringTest()
{
var instruction1 = ILInstruction.Create(OpCodes.Nop);
Assert.IsNotNull(instruction1);
var expected1 = $"IL_0000 nop";
Assert.IsTrue(instruction1.ToString() == expected1, $"Actual: {instruction1.ToString()}\r\nExpected:{expected1}");
var instruction2 = ILInstruction.Create(OpCodes.Ldarga_S, 1);
Assert.IsNotNull(instruction2);
var expected2 = $"IL_0000 ldarga.s 1";
Assert.IsTrue(instruction2.ToString() == expected2, $"Actual: {instruction2.ToString()}\r\nExpected:{expected2}");
}
public void TestReadInlineBrTarget()
{
var builder = new ILInstructionBuilder();
builder.Write(ILInstruction.Create(ILOpCodeValues.Br, 0));
builder.Write(ILOpCodeValues.Ldc_I8, 1L);
builder.Write(ILOpCodeValues.Ret);
var ilMethod = new Models.ILMethod(MethodBase.GetCurrentMethod().Name, typeof(long));
ilMethod.AddInstructions(builder.Instructions.ToArray());
var method = ilMethod.Compile();
var expected = method.Invoke(null, Type.EmptyTypes);
var instructions = ILInstructionReader.FromMethod(method);
ExecuteAndAssertResult(instructions, expected, OperandType.InlineBrTarget);
}
public void BuildAndExecuteILInstructionsTest()
{
var opCode1 = OpCodes.Ldc_I4_1;
var opCode2 = OpCodes.Ret;
var instruction1 = ILInstruction.Create(opCode1);
var instruction2 = ILInstruction.Create(opCode2);
var instructions = (new[] { instruction1, instruction2 }).ToList();
var frame = ILStackFrameBuilder.BuildAndExecute(instructions);
Assert.IsTrue(frame.Stream.Count == 2);
Assert.IsTrue(frame.Stream[0].OpCode == opCode1);
Assert.IsTrue(frame.Stream[1].OpCode == opCode2);
var actual = frame.ReturnResult;
Assert.IsNotNull(actual);
var expected = 1;
Assert.IsTrue((int)actual == expected, $"Actual:{actual}\r\nExpected:{expected}\r\n");
}
public void AddInstructions(params ILOpCodeValues[] instructions)
{
Instructions.AddRange(instructions.Select(x => ILInstruction.Create(x)));
}
public void CreateFromILOpCodeValuesFailsWhenNotSpecifyingRequiredArgumentTest()
{
var noOp = ILInstruction.Create(ILOpCodeValues.Ldarga_S);
}
public void CreateFromILOpCodeValuesFailsWhenSpecifyingArgumentTest()
{
var noOp = ILInstruction.Create(ILOpCodeValues.Nop, 0);
}
public void TestEmitSwitch()
{
var endSwitchInstruction = ILInstruction.Create(ILOpCodeValues.Nop);
endSwitchInstruction.Label = 2;
var addInstructions = new[]
{
ILInstruction.Create(ILOpCodeValues.Add),
ILInstruction.Create(ILOpCodeValues.Br_S, endSwitchInstruction)
};
var subInstructions = new[]
{
ILInstruction.Create(ILOpCodeValues.Sub),
ILInstruction.Create(ILOpCodeValues.Br_S, endSwitchInstruction)
};
addInstructions[0].Label = 0;
subInstructions[0].Label = 1;
var exceptionType = typeof(ArgumentOutOfRangeException);
var ctor = exceptionType.GetConstructor(Type.EmptyTypes);
var defaultInstuctions = new[]
{
ILInstruction.Create(ILOpCodeValues.Newobj, ctor.MetadataToken),
ILInstruction.Create(ILOpCodeValues.Throw)
};
var switchInstuction = ILInstruction.Create(ILOpCodeValues.Switch,
new[] { addInstructions[0], subInstructions[0] });
var builder = new ILInstructionBuilder();
//var b= arg[b];
builder.Write(ILOpCodeValues.Ldarg_1);
//var a= arg[1];
builder.Write(ILOpCodeValues.Ldarg_2);
//switch(arg[0])
builder.Write(ILOpCodeValues.Ldarg_0);
builder.Write(switchInstuction);
//case default
builder.Write(defaultInstuctions);
//case 0: add
builder.Write(addInstructions);
//case 1: sub
builder.Write(subInstructions);
builder.Write(endSwitchInstruction);
builder.Write(ILOpCodeValues.Ret);
var frame = ILStackFrameBuilder.Build(builder.Instructions);
frame.Args = new object[] { 0, 1, 2 };
frame.Execute();
var expected = 3;
Assert.IsNull(frame.Exception, $"Executing switch: add throw an exception {frame?.Exception}");
Assert.IsTrue(frame.Stack.Count == 0, "Stack was not cleared executing switch: add");
Assert.IsTrue((int)frame.ReturnResult == expected, $"Actual: {frame.ReturnResult}\r\nExpected: {expected}");
expected = -1;
frame.Args = new object[] { 1, 1, 2 };
frame.Execute();
Assert.IsNull(frame.Exception, $"Executing switch: add throw an exception {frame?.Exception}");
Assert.IsTrue(frame.Stack.Count == 0, "Stack was not cleared executing switch: add");
Assert.IsTrue((int)frame.ReturnResult == expected, $"Actual: {frame.ReturnResult}\r\nExpected: {expected}");
frame.Args = new object[] { 2, 1, 2 };
frame.Execute();
Assert.IsNotNull(frame.Exception, $"Executing switch failed to execute default case to and throw and exception.");
Assert.IsInstanceOfType(frame.Exception, typeof(ArgumentOutOfRangeException), $"Frame failed to throw {nameof(ArgumentOutOfRangeException)}");
Assert.IsNull(frame.ReturnResult, $"Actual: {frame.ReturnResult}\r\nExpected: [null]");
//var type = BuildSwitchTestType();
//var switchMethod = type.GetMethod("SwitchTest");
//Assert.IsNotNull(switchMethod);
//var instructions = ILInstructionReader.FromMethod(switchMethod);
var ilMethod = new ILMethod(MethodBase.GetCurrentMethod().Name, expected.GetType());
ilMethod.AddParameters(new[] { typeof(int), typeof(int), typeof(int) });
ilMethod.AddInstructions(builder.Instructions.ToArray());
ilMethod.Module = exceptionType.Module;
var method = ilMethod.Compile();
var actual = method.Invoke(null, new object[] { 0, 1, 2 });
expected = 3;
Assert.IsTrue((int)actual == expected, $"Actual: {actual}\r\nExpected:{expected}");
actual = method.Invoke(null, new object[] { 1, 1, 2 });
expected = -1;
Assert.IsTrue((int)actual == expected, $"Actual: {actual}\r\nExpected:{expected}");
Exception exception = null;
try
{
actual = method.Invoke(null, new object[] { 2, 1, 2 });
}
catch (TargetInvocationException ex)
{
exception = ex.InnerException;
}
Assert.IsNotNull(exception, $"Failed to catch argument exception");
Assert.IsInstanceOfType(exception, exceptionType);
}