public void FactorialWorks()
{
var method = new ILBuilderDebug().NewMethod <Func <int, int> >("FactorialIL");
var il = method.Generator;
var finish = il.DefineLabel();
var next = il.DefineLabel();
var ret = il.DeclareLocal(typeof(int), "ret");
il
.Ldarg(0) //[n]
.Stloc(ret) //[]
.Mark(next)
.Ldarg(0) //[n]
.LdcI4(2) // [ret, 2]
.Blt(finish) //[]
.Ldarg(0) //[n]
.LdcI4(1) //[n, 1]
.Sub() //[n-1]
.Dup() //[n-1, n-1]
.Starg(0) //[n-1]
.Ldloc(ret) //[n-1, ret]
.Mul() //[(n-1)*ret] -> ret
.Stloc(ret) //[ret]
.Br(next)
.Mark(finish)
.Ldloc(ret)
.Ret();
Assert.Equal(24, method.Create()(4));
}
public void CanCallPrivateConstructor()
{
var method = new ILBuilderDebug().NewMethod<Func<PrivateConstructor>>("PrivateConstructorCall");
var il = method.Generator;
il
.LdcI4(42)
.Newobj(typeof (PrivateConstructor).GetConstructors(BindingFlags.NonPublic|BindingFlags.Instance)[0])
.Ret();
Assert.AreEqual(42, method.Create()().A);
}
public void AllocationLessDictionaryIteration()
{
var method = new ILBuilderDebug().NewMethod <Func <Dictionary <int, int>, int> >("PrintDict");
var il = method.Generator;
var sumLocal = il.DeclareLocal(typeof(int), "sum");
var dictType = typeof(Dictionary <int, int>);
var getEnumeratorMethod =
dictType.GetMethods().Single(m => m.Name == "GetEnumerator" && m.ReturnType.IsValueType && m.GetParameters().Length == 0);
var enumeratorType = getEnumeratorMethod.ReturnType;
var moveNextMethod = enumeratorType.GetMethod("MoveNext");
var currentGetter =
enumeratorType.GetProperties()
.Single(m => m.Name == "Current" && m.PropertyType.IsValueType)
.GetGetMethod();
var keyValuePairType = currentGetter.ReturnType;
var enumeratorLocal = il.DeclareLocal(enumeratorType);
var keyValuePairLocal = il.DeclareLocal(keyValuePairType);
var againLabel = il.DefineLabel("again");
var finishedLabel = il.DefineLabel("finished");
il
.LdcI4(0)
.Stloc(sumLocal)
.Ldarg(0)
.Callvirt(getEnumeratorMethod)
.Stloc(enumeratorLocal)
.Mark(againLabel)
.Ldloca(enumeratorLocal)
.Call(moveNextMethod)
.BrfalseS(finishedLabel)
.Ldloca(enumeratorLocal)
.Call(currentGetter)
.Stloc(keyValuePairLocal)
.Ldloca(keyValuePairLocal)
.Call(keyValuePairType.GetProperty("Key").GetGetMethod())
.Ldloc(sumLocal)
.Add()
.Stloc(sumLocal)
.Ldloca(keyValuePairLocal)
.Call(keyValuePairType.GetProperty("Value").GetGetMethod())
.Ldloc(sumLocal)
.Add()
.Stloc(sumLocal)
.BrS(againLabel)
.Mark(finishedLabel)
.Ldloca(enumeratorLocal)
.Constrained(enumeratorType)
.Callvirt(() => default(IDisposable).Dispose())
.Ldloc(sumLocal)
.Ret();
Assert.Equal(10, method.Create()(new Dictionary <int, int> {
{ 1, 2 }, { 3, 4 }
}));
}
public void CanCallPrivateConstructor()
{
var method = new ILBuilderDebug().NewMethod <Func <PrivateConstructor> >("PrivateConstructorCall");
var il = method.Generator;
il
.LdcI4(42)
.Newobj(typeof(PrivateConstructor).GetConstructors(BindingFlags.NonPublic | BindingFlags.Instance)[0])
.Ret();
Assert.Equal(42, method.Create()().A);
}
public void AllocationLessDictionaryIteration()
{
var method = new ILBuilderDebug().NewMethod<Func<Dictionary<int, int>, int>>("PrintDict");
var il = method.Generator;
var sumLocal = il.DeclareLocal(typeof(int), "sum");
var dictType = typeof(Dictionary<int, int>);
var getEnumeratorMethod =
dictType.GetMethods().Single(m => m.Name == "GetEnumerator" && m.ReturnType.IsValueType && m.GetParameters().Length == 0);
var enumeratorType = getEnumeratorMethod.ReturnType;
var moveNextMethod = enumeratorType.GetMethod("MoveNext");
var currentGetter =
enumeratorType.GetProperties()
.Single(m => m.Name == "Current" && m.PropertyType.IsValueType)
.GetGetMethod();
var keyValuePairType = currentGetter.ReturnType;
var enumeratorLocal = il.DeclareLocal(enumeratorType);
var keyValuePairLocal = il.DeclareLocal(keyValuePairType);
var againLabel = il.DefineLabel("again");
var finishedLabel = il.DefineLabel("finished");
il
.LdcI4(0)
.Stloc(sumLocal)
.Ldarg(0)
.Callvirt(getEnumeratorMethod)
.Stloc(enumeratorLocal)
.Mark(againLabel)
.Ldloca(enumeratorLocal)
.Call(moveNextMethod)
.BrfalseS(finishedLabel)
.Ldloca(enumeratorLocal)
.Call(currentGetter)
.Stloc(keyValuePairLocal)
.Ldloca(keyValuePairLocal)
.Call(keyValuePairType.GetProperty("Key").GetGetMethod())
.Ldloc(sumLocal)
.Add()
.Stloc(sumLocal)
.Ldloca(keyValuePairLocal)
.Call(keyValuePairType.GetProperty("Value").GetGetMethod())
.Ldloc(sumLocal)
.Add()
.Stloc(sumLocal)
.BrS(againLabel)
.Mark(finishedLabel)
.Ldloca(enumeratorLocal)
.Constrained(enumeratorType)
.Callvirt(()=>default(IDisposable).Dispose())
.Ldloc(sumLocal)
.Ret();
Assert.Equal(10, method.Create()(new Dictionary<int, int> { { 1, 2 }, { 3, 4 } }));
}
public void ILNewestWayDebug()
{
var method = new ILBuilderDebug().NewMethod<Func<Nested>>("SampleCall");
var il = method.Generator;
var local = il.DeclareLocal(typeof(Nested), "n");
il
.Newobj(() => new Nested())
.Dup()
.Stloc(local)
.Ldstr("Test")
.Call(() => default(Nested).Fun(""))
.Ldloc(local)
.Ret();
var action = method.Create();
var n = action();
Assert.Equal("Test", n.PassedParam);
}
public void CanFixFirstParameterDebug()
{
var method = new ILBuilderDebug().NewMethod("SampleCall", typeof(Func<Nested>), typeof(string));
var il = method.Generator;
var local = il.DeclareLocal(typeof(Nested), "n");
il
.Newobj(() => new Nested())
.Dup()
.Stloc(local)
.Ldarg(0)
.Call(() => default(Nested).Fun(""))
.Ldloc(local)
.Ret();
var action = (Func<Nested>)method.Create("Test");
var n = action();
Assert.AreEqual("Test", n.PassedParam);
}
public void CanAccessPrivateProperties()
{
var method = new ILBuilderDebug().NewMethod<Func<int>>("PrivateAccess");
var il = method.Generator;
var local = il.DeclareLocal(typeof(Nested), "n");
var propertyInfos = typeof(Nested).GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.FlattenHierarchy);
var propertyInfo = propertyInfos.First(p => p.Name == "PrivateProperty");
il
.Newobj(() => new Nested())
.Dup()
.Stloc(local)
.LdcI4(42)
.Call(propertyInfo.GetSetMethod(true))
.Ldloc(local)
.Call(propertyInfo.GetGetMethod(true))
.Ret();
var d = method.Create();
Assert.Equal(42, d());
}
public void ILNewestWayDebug()
{
var method = new ILBuilderDebug().NewMethod <Func <Nested> >("SampleCall");
var il = method.Generator;
var local = il.DeclareLocal(typeof(Nested), "n");
il
.Newobj(() => new Nested())
.Dup()
.Stloc(local)
.Ldstr("Test")
.Call(() => default(Nested).Fun(""))
.Ldloc(local)
.Ret();
var action = method.Create();
var n = action();
Assert.Equal("Test", n.PassedParam);
}
public void CanFixFirstParameterDebug()
{
var method = new ILBuilderDebug().NewMethod("SampleCall", typeof(Func <Nested>), typeof(string));
var il = method.Generator;
var local = il.DeclareLocal(typeof(Nested), "n");
il
.Newobj(() => new Nested())
.Dup()
.Stloc(local)
.Ldarg(0)
.Call(() => default(Nested).Fun(""))
.Ldloc(local)
.Ret();
var action = (Func <Nested>)method.Create("Test");
var n = action();
Assert.Equal("Test", n.PassedParam);
}
public void CanAccessPrivateProperties()
{
var method = new ILBuilderDebug().NewMethod <Func <int> >("PrivateAccess");
var il = method.Generator;
var local = il.DeclareLocal(typeof(Nested), "n");
var propertyInfos = typeof(Nested).GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.FlattenHierarchy);
var propertyInfo = propertyInfos.First(p => p.Name == "PrivateProperty");
il
.Newobj(() => new Nested())
.Dup()
.Stloc(local)
.LdcI4(42)
.Call(propertyInfo.GetSetMethod(true))
.Ldloc(local)
.Call(propertyInfo.GetGetMethod(true))
.Ret();
var d = method.Create();
Assert.Equal(42, d());
}
public void FactorialWorks()
{
var method = new ILBuilderDebug().NewMethod<Func<int, int>>("FactorialIL");
var il = method.Generator;
var finish = il.DefineLabel();
var next = il.DefineLabel();
var ret = il.DeclareLocal(typeof(int), "ret");
il
.Ldarg(0) //[n]
.Stloc(ret) //[]
.Mark(next)
.Ldarg(0) //[n]
.LdcI4(2) // [ret, 2]
.Blt(finish) //[]
.Ldarg(0) //[n]
.LdcI4(1) //[n, 1]
.Sub() //[n-1]
.Dup() //[n-1, n-1]
.Starg(0) //[n-1]
.Ldloc(ret) //[n-1, ret]
.Mul() //[(n-1)*ret] -> ret
.Stloc(ret) //[ret]
.Br(next)
.Mark(finish)
.Ldloc(ret)
.Ret();
Assert.Equal(24, method.Create()(4));
}
