public static IProducer GetOrCreateDefaultProducer(Type type)
{
IProducer producer;
AccessorMgr.m_defaultCtors.TryGetValue(type, out producer);
return(AccessorMgr.CreateDefaultCtor(type));
}
private static Dictionary <MemberInfo, IGetterSetter> CreateAccessors(Type type)
{
Dictionary <MemberInfo, IGetterSetter> dictionary = new Dictionary <MemberInfo, IGetterSetter>();
MemberInfo[] members = type.GetMembers(BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public |
BindingFlags.NonPublic);
ModuleBuilder module1 = AccessorMgr.GetOrCreateModule();
foreach (MemberInfo key in members)
{
if (((DontCopyAttribute[])key.GetCustomAttributes(typeof(DontCopyAttribute), false)).Length == 0)
{
IGetterSetter module2;
if (key.MemberType == MemberTypes.Property)
{
module2 = AccessorMgr.AddToModule(module1, (PropertyInfo)key);
}
else if (key.MemberType == MemberTypes.Field)
{
module2 = AccessorMgr.AddToModule(module1, (FieldInfo)key);
}
else
{
continue;
}
dictionary.Add(key, module2);
}
}
return(dictionary);
}
internal static IProducer AddToModule(ModuleBuilder module, ConstructorInfo ctor)
{
if (ctor.DeclaringType.IsValueType)
{
throw new ArgumentException("Cannot emit Constructors of value-types (yet): " +
(object)ctor.DeclaringType);
}
Type declaringType = ctor.DeclaringType;
string str = AccessorMgr.NextTypeName(ctor.GetFullMemberName());
TypeBuilder typeBuilder = module.DefineType(str, TypeAttributes.Public);
typeBuilder.AddInterfaceImplementation(typeof(IProducer));
Type[] parameterTypes = new Type[0];
Type returnType = typeof(object);
ILGenerator ilGenerator = typeBuilder.DefineMethod("Produce",
MethodAttributes.Public | MethodAttributes.Virtual, returnType, parameterTypes).GetILGenerator();
ilGenerator.DeclareLocal(declaringType);
ilGenerator.Emit(OpCodes.Newobj, ctor);
ilGenerator.Emit(OpCodes.Stloc_0);
ilGenerator.Emit(OpCodes.Ldloc_0);
ilGenerator.Emit(OpCodes.Ret);
typeBuilder.CreateType();
IProducer instance = module.Assembly.CreateInstance(str) as IProducer;
if (instance == null)
{
throw new Exception("Unable to create producer.");
}
return(instance);
}
public static ModuleBuilder GetOrCreateModule()
{
if ((Module)AccessorMgr._module == (Module)null)
{
AccessorMgr._module = AccessorMgr.CreateModule();
}
return(AccessorMgr._module);
}
private static IProducer CreateDefaultCtor(Type type)
{
IProducer module =
AccessorMgr.AddToModule(AccessorMgr.GetOrCreateModule(), type.GetConstructor(new Type[0]));
AccessorMgr.m_defaultCtors.Add(type, module);
return(module);
}
public static Dictionary <MemberInfo, IGetterSetter> GetOrCreateAccessors(Type type)
{
Dictionary <MemberInfo, IGetterSetter> accessors;
if (!AccessorMgr.m_accessors.TryGetValue(type, out accessors))
{
AccessorMgr.m_accessors.Add(type, accessors = AccessorMgr.CreateAccessors(type));
}
return(accessors);
}
/// <summary>
/// Copies all public properties that have a setter and a getter and exist in the types of both objects from input to output.
/// Ignores all properties that have the <see cref="T:WCell.Util.DynamicAccess.DontCopyAttribute" />.
/// </summary>
/// <returns></returns>
public static IGetterSetter GetOrCreateAccessor(Type type, PropertyInfo info)
{
IGetterSetter getterSetter;
if (!AccessorMgr.GetOrCreateAccessors(type).TryGetValue((MemberInfo)info, out getterSetter))
{
throw new Exception("Tried to get accessor for invalid Property: " + (object)info);
}
return(getterSetter);
}
public static IGetterSetter AddToModule(ModuleBuilder module, FieldInfo field)
{
string str = AccessorMgr.NextTypeName(field.GetFullMemberName());
Type declaringType = field.DeclaringType;
Type fieldType = field.FieldType;
TypeBuilder typeBuilder = module.DefineType(str, TypeAttributes.Public);
typeBuilder.AddInterfaceImplementation(typeof(IGetterSetter));
Type[] parameterTypes1 = new Type[1]
{
typeof(object)
};
Type returnType = typeof(object);
ILGenerator ilGenerator1 = typeBuilder.DefineMethod("Get",
MethodAttributes.Public | MethodAttributes.Virtual, returnType, parameterTypes1).GetILGenerator();
ilGenerator1.DeclareLocal(typeof(object));
ilGenerator1.Emit(OpCodes.Ldarg_1);
ilGenerator1.Emit(OpCodes.Castclass, declaringType);
ilGenerator1.Emit(OpCodes.Ldfld, field);
if (fieldType.IsValueType)
{
ilGenerator1.Emit(OpCodes.Box, fieldType);
}
ilGenerator1.Emit(OpCodes.Stloc_0);
ilGenerator1.Emit(OpCodes.Ldloc_0);
ilGenerator1.Emit(OpCodes.Ret);
Type[] parameterTypes2 = new Type[2]
{
typeof(object),
typeof(object)
};
ILGenerator ilGenerator2 = typeBuilder.DefineMethod("Set",
MethodAttributes.Public | MethodAttributes.Virtual, (Type)null, parameterTypes2).GetILGenerator();
ilGenerator2.DeclareLocal(fieldType);
ilGenerator2.Emit(OpCodes.Ldarg_1);
ilGenerator2.Emit(OpCodes.Castclass, declaringType);
ilGenerator2.Emit(OpCodes.Ldarg_2);
if (fieldType.IsValueType)
{
ilGenerator2.Emit(OpCodes.Unbox_Any, fieldType);
}
ilGenerator2.Emit(OpCodes.Stfld, field);
ilGenerator2.Emit(OpCodes.Ret);
typeBuilder.CreateType();
IGetterSetter instance = module.Assembly.CreateInstance(str) as IGetterSetter;
if (instance == null)
{
throw new Exception("Unable to create Field accessor.");
}
return(instance);
}
private static void Test()
{
AccessorMgr.X x1 = new AccessorMgr.X();
FieldInfo field = x1.GetType().GetField("a");
ConstructorInfo constructor = x1.GetType().GetConstructor(new Type[0]);
AccessorMgr.EmitAssembly(field);
IProducer producer = AccessorMgr.EmitAssembly(constructor);
AccessorMgr.X x2;
Utility.Measure("Create object", 2000000, (Action)(() => x2 = new AccessorMgr.X()));
AccessorMgr.X x3;
Utility.Measure("Dynamically create object", 2000000,
(Action)(() => x3 = (AccessorMgr.X)producer.Produce()));
Utility.Measure("Create object through reflection", 2000000,
(Action)(() => Activator.CreateInstance <AccessorMgr.X>()));
}
public static Dictionary <MemberInfo, IGetterSetter> GetOrCreateAccessors <T>()
{
return(AccessorMgr.GetOrCreateAccessors(typeof(T)));
}
public static IGetterSetter AddToModule(ModuleBuilder module, PropertyInfo prop)
{
string str = AccessorMgr.NextTypeName(prop.GetFullMemberName());
Type declaringType = prop.DeclaringType;
TypeBuilder typeBuilder = module.DefineType(str, TypeAttributes.Public);
typeBuilder.AddInterfaceImplementation(typeof(IGetterSetter));
Type[] parameterTypes1 = new Type[1]
{
typeof(object)
};
Type returnType1 = typeof(object);
ILGenerator ilGenerator1 = typeBuilder.DefineMethod("Get",
MethodAttributes.Public | MethodAttributes.Virtual, returnType1, parameterTypes1).GetILGenerator();
MethodInfo getMethod = prop.GetGetMethod();
if (getMethod != (MethodInfo)null)
{
ilGenerator1.DeclareLocal(typeof(object));
ilGenerator1.Emit(OpCodes.Ldarg_1);
ilGenerator1.Emit(OpCodes.Castclass, declaringType);
ilGenerator1.EmitCall(OpCodes.Call, getMethod, (Type[])null);
if (getMethod.ReturnType.IsValueType)
{
ilGenerator1.Emit(OpCodes.Box, getMethod.ReturnType);
}
ilGenerator1.Emit(OpCodes.Stloc_0);
ilGenerator1.Emit(OpCodes.Ldloc_0);
}
else
{
ilGenerator1.ThrowException(typeof(MissingMethodException));
}
ilGenerator1.Emit(OpCodes.Ret);
Type[] parameterTypes2 = new Type[2]
{
typeof(object),
typeof(object)
};
Type returnType2 = (Type)null;
ILGenerator ilGenerator2 = typeBuilder.DefineMethod("Set",
MethodAttributes.Public | MethodAttributes.Virtual, returnType2, parameterTypes2).GetILGenerator();
MethodInfo setMethod = prop.GetSetMethod();
if (setMethod != (MethodInfo)null)
{
Type parameterType = setMethod.GetParameters()[0].ParameterType;
ilGenerator2.DeclareLocal(parameterType);
ilGenerator2.Emit(OpCodes.Ldarg_1);
ilGenerator2.Emit(OpCodes.Castclass, declaringType);
ilGenerator2.Emit(OpCodes.Ldarg_2);
if (parameterType.IsValueType)
{
ilGenerator2.Emit(OpCodes.Unbox, parameterType);
OpCode opcode;
if (AccessorMgr.PropTypesHashes.TryGetValue(parameterType, out opcode))
{
ilGenerator2.Emit(opcode);
}
else
{
ilGenerator2.Emit(OpCodes.Ldobj, parameterType);
}
}
else
{
ilGenerator2.Emit(OpCodes.Castclass, parameterType);
}
ilGenerator2.EmitCall(OpCodes.Callvirt, setMethod, (Type[])null);
}
else
{
ilGenerator2.ThrowException(typeof(MissingMethodException));
}
ilGenerator2.Emit(OpCodes.Ret);
typeBuilder.CreateType();
IGetterSetter instance = module.Assembly.CreateInstance(str) as IGetterSetter;
if (instance == null)
{
throw new Exception("Unable to create property accessor for \"" + (object)prop + "\" of type: " +
prop.DeclaringType.FullName);
}
return(instance);
}
private static IProducer EmitAssembly(ConstructorInfo ctor)
{
return(AccessorMgr.AddToModule(AccessorMgr.GetOrCreateModule(), ctor));
}
private static IGetterSetter EmitAssembly(FieldInfo field)
{
return(AccessorMgr.AddToModule(AccessorMgr.GetOrCreateModule(), field));
}