/// <summary>
/// 创建PropertyInfo的动态方法get
/// </summary>
/// <param name="propertyInfo"></param>
/// <returns></returns>
private static DynamicPropertyGetHandler CreateGetHandler(PropertyInfo propertyInfo)
{
MethodInfo getMethodInfo = propertyInfo.GetGetMethod(true);
int argIndex = 0;
DynamicMethod dynamicGet = new DynamicMethod("GP", Type_Object, PropertyGet_P, propertyInfo.DeclaringType, true);
ILGenerator getGenerator = dynamicGet.GetILGenerator();
getGenerator.Emit(OpCodes.Ldarg_0);
foreach (ParameterInfo parainfo in getMethodInfo.GetParameters())
{
getGenerator.Emit(OpCodes.Ldarg_1);
if (argIndex > 8)
{
getGenerator.Emit(OpCodesFactory.GetLdc_I4(argIndex), argIndex);
}
else
{
getGenerator.Emit(OpCodesFactory.GetLdc_I4(argIndex));
}
getGenerator.Emit(OpCodes.Ldelem_Ref);
OpCodesFactory.UnboxIfNeeded(getGenerator, parainfo.ParameterType);
argIndex++;
}
getGenerator.Emit(OpCodes.Callvirt, getMethodInfo);
OpCodesFactory.BoxIfNeeded(getGenerator, getMethodInfo.ReturnType);
getGenerator.Emit(OpCodes.Ret);
return((DynamicPropertyGetHandler)dynamicGet.CreateDelegate(Type_DPGH));
}
/// <summary>
/// 创建Field的动态方法get
/// </summary>
/// <param name="fieldInfo"></param>
/// <returns></returns>
private static DynamicFieldGetHandler CreateGetHandler(FieldInfo fieldInfo)
{
DynamicMethod dynamicGet = new DynamicMethod("GF", Type_Object, FieldGet_P, fieldInfo.DeclaringType, true);
ILGenerator getGenerator = dynamicGet.GetILGenerator();
getGenerator.Emit(OpCodes.Ldarg_0);
getGenerator.Emit(OpCodes.Ldfld, fieldInfo);
OpCodesFactory.BoxIfNeeded(getGenerator, fieldInfo.FieldType);
getGenerator.Emit(OpCodes.Ret);
return((DynamicFieldGetHandler)dynamicGet.CreateDelegate(Type_DFGH));
}
private static DynamicMethodHandler CreatMethodDelegate(MethodInfo genericMethodInfo, Type[] genericParameterTypes)
{
MethodInfo makeGenericMethodInfo;
if (genericParameterTypes != null && genericParameterTypes.Length > 0)
{
makeGenericMethodInfo = genericMethodInfo.MakeGenericMethod(genericParameterTypes);
}
else
{
makeGenericMethodInfo = genericMethodInfo;
}
DynamicMethod dynamicMethod = new DynamicMethod("DM", Type_Object, PropertyGet_P, makeGenericMethodInfo.DeclaringType.Module);
ILGenerator il = dynamicMethod.GetILGenerator();
ParameterInfo[] ps = makeGenericMethodInfo.GetParameters();
Type[] paramTypes = new Type[ps.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;
}
}
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);
OpCodesFactory.EmitFastInt(il, i);
il.Emit(OpCodes.Ldelem_Ref);
OpCodesFactory.EmitCastToReference(il, paramTypes[i]);
il.Emit(OpCodes.Stloc, locals[i]);
}
if (!makeGenericMethodInfo.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 (makeGenericMethodInfo.IsStatic)
{
il.EmitCall(OpCodes.Call, makeGenericMethodInfo, null);
}
else
{
il.EmitCall(OpCodes.Callvirt, makeGenericMethodInfo, null);
}
if (makeGenericMethodInfo.ReturnType == typeof(void))
{
il.Emit(OpCodes.Ldnull);
}
else
{
OpCodesFactory.BoxIfNeeded(il, makeGenericMethodInfo.ReturnType);
}
for (int i = 0; i < paramTypes.Length; i++)
{
if (ps[i].ParameterType.IsByRef)
{
il.Emit(OpCodes.Ldarg_1);
OpCodesFactory.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((DynamicMethodHandler)dynamicMethod.CreateDelegate(Type_DM));
}