|
public static EmitCastToReference ( ILGenerator il, |
||
| il | ILGenerator | |
| type | ||
| return | void | |
private static Func <object[], object> GetConstructorInvoker(ConstructorInfo info)
{
var dynamicMethod = new DynamicMethod(
string.Format("Dynamic{0}{1}{2}", info.DeclaringType.Name.Replace("`1", ""), "Ctor", info.IsGenericMethod ? "G" : ""),
typeof(object),
new Type[] { typeof(object[]) },
true);
var il = dynamicMethod.GetILGenerator();
var ps = info.GetParameters();
var locals = new LocalBuilder[ps.Length];
for (int i = 0; i < ps.Length; i++)
{
locals[i] = il.DeclareLocal(ps[i].ParameterType, true);
}
for (int i = 0; i < ps.Length; i++)
{
il.Emit(OpCodes.Ldarg_0);
EmitInvoker.EmitFastInt(il, i);
il.Emit(OpCodes.Ldelem_Ref);
EmitInvoker.EmitCastToReference(il, ps[i].ParameterType);
il.Emit(OpCodes.Stloc, locals[i]);
}
for (int i = 0; i < ps.Length; i++)
{
il.Emit(OpCodes.Ldloc, locals[i]);
}
il.Emit(OpCodes.Newobj, info);
il.Emit(OpCodes.Ret);
return((Func <object[], object>)dynamicMethod.CreateDelegate(typeof(Func <object[], object>)));
}
public static Func <T, object[], V> GetMethodInvoker(MethodInfo info)
{
var method = new DynamicMethod(EmitInvoker.GetMethodName(info),
typeof(V),
new Type[] { typeof(T), typeof(object[]) },
true);
var il = method.GetILGenerator();
var ps = info.GetParameters();
var paramTypes = new Type[ps.Length];
var locals = new LocalBuilder[paramTypes.Length];
for (int i = 0; i < paramTypes.Length; i++)
{
if (ps[i].ParameterType.IsByRef)
{
paramTypes[i] = ps[i].ParameterType.GetElementType();
}
else
{
paramTypes[i] = ps[i].ParameterType;
}
}
for (int i = 0; i < paramTypes.Length; i++)
{
locals[i] = il.DeclareLocal(paramTypes[i], true);
}
for (int i = 0; i < paramTypes.Length; i++)
{
il.Emit(OpCodes.Ldarg_1);
EmitInvoker.EmitFastInt(il, i);
il.Emit(OpCodes.Ldelem_Ref);
EmitInvoker.EmitCastToReference(il, paramTypes[i]);
il.Emit(OpCodes.Stloc, locals[i]);
}
if (!info.IsStatic)
{
il.Emit(OpCodes.Ldarg_0);
}
for (int i = 0; i < paramTypes.Length; i++)
{
if (ps[i].ParameterType.IsByRef)
{
il.Emit(OpCodes.Ldloca_S, locals[i]);
}
else
{
il.Emit(OpCodes.Ldloc, locals[i]);
}
}
if (info.IsStatic)
{
il.EmitCall(OpCodes.Call, info, null);
}
else
{
il.EmitCall(OpCodes.Callvirt, info, null);
}
if (info.ReturnType == typeof(void))
{
il.Emit(OpCodes.Ldnull);
}
for (int i = 0; i < paramTypes.Length; i++)
{
if (ps[i].ParameterType.IsByRef)
{
il.Emit(OpCodes.Ldarg_1);
EmitInvoker.EmitFastInt(il, i);
il.Emit(OpCodes.Ldloc, locals[i]);
if (locals[i].LocalType.IsValueType)
{
il.Emit(OpCodes.Box, locals[i].LocalType);
}
il.Emit(OpCodes.Stelem_Ref);
}
}
il.Emit(OpCodes.Ret);
return((Func <T, object[], V>)method.CreateDelegate(typeof(Func <T, object[], V>)));
}
