private GetFieldValueDelegate CreateGetFieldValueMethod(FieldInfo field)
{
DynamicMethod method =
ILUtil.CreateDynamicMethod(m_reflectedType, typeof(object), new Type[] { typeof(object) });
ILGenerator il = method.GetILGenerator();
LocalBuilder thisLocal = il.DeclareLocal(m_refinedType);
LocalBuilder dataLocal = il.DeclareLocal(typeof(object));
il.Emit(OpCodes.Ldarg_0);
ILUtil.EmitCastToReference(il, m_reflectedType);
il.Emit(OpCodes.Stloc, thisLocal);
ConstructorInfo ci = ReflectionUtil.GetDefaultConstructor(typeof(object));
il.Emit(OpCodes.Newobj, ci);
il.Emit(OpCodes.Stloc, dataLocal);
// get the value
il.Emit(OpCodes.Ldloc, thisLocal);
il.Emit(OpCodes.Ldfld, field);
ILUtil.BoxIfNeeded(il, field.FieldType);
il.Emit(OpCodes.Stloc, dataLocal);
il.Emit(OpCodes.Ldloc, dataLocal);
il.Emit(OpCodes.Ret);
return((GetFieldValueDelegate)method.CreateDelegate(typeof(GetFieldValueDelegate)));
}
private GetPropertyValueDelegate CreateGetPropertyValueMethod(PropertyInfo pi)
{
MethodInfo methodInfo = pi.GetGetMethod();
if (methodInfo == null)
{
return(null);
}
DynamicMethod method =
ILUtil.CreateDynamicMethod(m_reflectedType, typeof(object), new Type[] { typeof(object) });
ILGenerator il = method.GetILGenerator();
LocalBuilder thisLocal = il.DeclareLocal(m_refinedType);
il.Emit(OpCodes.Ldarg_0);
ILUtil.EmitCastToReference(il, m_reflectedType);
il.Emit(OpCodes.Stloc, thisLocal.LocalIndex);
il.Emit(OpCodes.Ldloc, thisLocal);
il.EmitCall(OpCodes.Callvirt, methodInfo, null);
ILUtil.BoxIfNeeded(il, pi.PropertyType);
il.Emit(OpCodes.Ret);
return((GetPropertyValueDelegate)method.CreateDelegate(typeof(GetPropertyValueDelegate)));
}
private GetFieldValuesDelegate CreateGetFieldValuesMethod(FieldInfo[] fields)
{
Type[] methodArguments = new Type[] { typeof(object) };
DynamicMethod method = ILUtil.CreateDynamicMethod(m_reflectedType, typeof(object[]), methodArguments);
ILGenerator il = method.GetILGenerator();
LocalBuilder thisLocal = il.DeclareLocal(m_refinedType);
LocalBuilder dataLocal = il.DeclareLocal(typeof(object[]));
il.Emit(OpCodes.Ldarg_0);
ILUtil.EmitCastToReference(il, m_reflectedType);
il.Emit(OpCodes.Stloc, thisLocal);
il.Emit(OpCodes.Ldc_I4, fields.Length);
il.Emit(OpCodes.Newarr, typeof(object));
il.Emit(OpCodes.Stloc, dataLocal);
for (int i = 0; i < fields.Length; i++)
{
FieldInfo field = fields[i];
il.Emit(OpCodes.Ldloc, dataLocal);
il.Emit(OpCodes.Ldc_I4, i);
// get the value
il.Emit(OpCodes.Ldloc, thisLocal);
il.Emit(OpCodes.Ldfld, field);
ILUtil.BoxIfNeeded(il, field.FieldType);
il.Emit(OpCodes.Stelem_Ref);
}
il.Emit(OpCodes.Ldloc, dataLocal.LocalIndex);
il.Emit(OpCodes.Ret);
return((GetFieldValuesDelegate)method.CreateDelegate(typeof(GetFieldValuesDelegate)));
}
public static InvokeMethodDelegate CreateMethodInvoker(MethodInfo methodInfo)
{
DynamicMethod method = ILUtil.CreateDynamicMethod(
methodInfo.DeclaringType,
typeof(object),
new Type[] { typeof(object), typeof(object[]) });
ILGenerator il = method.GetILGenerator();
ParameterInfo[] parameters = methodInfo.GetParameters();
Type[] paramTypes = new Type[parameters.Length];
for (int i = 0; i < paramTypes.Length; i++)
{
if (parameters[i].ParameterType.IsByRef)
{
paramTypes[i] = parameters[i].ParameterType.GetElementType();
}
else
{
paramTypes[i] = parameters[i].ParameterType;
}
}
LocalBuilder[] locals = new LocalBuilder[paramTypes.Length];
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);
if (i >= -1 && i <= 8)
{
il.Emit(ILUtil.GetOpCodeByInt(i));
}
else
{
if (i > -129 && i < 128)
{
il.Emit(OpCodes.Ldc_I4_S, (SByte)i);
}
else
{
il.Emit(OpCodes.Ldc_I4, i);
}
}
il.Emit(OpCodes.Ldelem_Ref);
// ILUtil.EmitCastToReference(il, paramTypes[i]);
if (paramTypes[i].IsValueType)
{
il.Emit(OpCodes.Unbox_Any, paramTypes[i]);
}
else
{
il.Emit(OpCodes.Castclass, paramTypes[i]);
}
il.Emit(OpCodes.Stloc, locals[i]);
}
if (!methodInfo.IsStatic)
{
il.Emit(OpCodes.Ldarg_0);
}
for (int i = 0; i < paramTypes.Length; i++)
{
if (parameters[i].ParameterType.IsByRef)
{
il.Emit(OpCodes.Ldloca_S, locals[i]);
}
else
{
il.Emit(OpCodes.Ldloc, locals[i]);
}
}
if (methodInfo.IsStatic)
{
il.EmitCall(OpCodes.Call, methodInfo, null);
}
else
{
il.EmitCall(OpCodes.Callvirt, methodInfo, null);
}
if (methodInfo.ReturnType == typeof(void))
{
il.Emit(OpCodes.Ldnull);
}
else
{
ILUtil.BoxIfNeeded(il, methodInfo.ReturnType);
}
for (int i = 0; i < paramTypes.Length; i++)
{
if (parameters[i].ParameterType.IsByRef)
{
il.Emit(OpCodes.Ldarg_1);
if (i >= -1 && i <= 8)
{
il.Emit(ILUtil.GetOpCodeByInt(i));
}
else
{
if (i > -129 && i < 128)
{
il.Emit(OpCodes.Ldc_I4_S, (SByte)i);
}
else
{
il.Emit(OpCodes.Ldc_I4, 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((InvokeMethodDelegate)method.CreateDelegate(typeof(InvokeMethodDelegate)));
}