public bool Equals(MethodCallDelegateKey other)
{
if (ReferenceEquals(null, other))
{
return(false);
}
if (other.hashCode != hashCode)
{
return(false);
}
var otherItems = other.items;
if (otherItems.Length != items.Length)
{
return(false);
}
for (int i = 0; i < items.Length; i++)
{
if (!Equals(otherItems[i], items[i]))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Creates property \ member setter delegate.
/// </summary>
/// <typeparam name="TObject">Declaring type.</typeparam>
/// <typeparam name="TValue">Member type.</typeparam>
/// <param name="memberName">Member name.</param>
/// <returns><see cref="Action{T,R}"/> delegate
/// that sets member value.</returns>
public static Action <TObject, TValue> CreateSetMemberDelegate <TObject, TValue>(string memberName)
{
Type type = typeof(TObject);
Type tValue = typeof(TValue);
var methodKey = new MethodCallDelegateKey(memberName, type, tValue);
Action <TObject, TValue> result = (Action <TObject, TValue>)GetCachedDelegate(methodKey);
if (result == null)
{
lock (cachedDelegates.SyncRoot) {
result = (Action <TObject, TValue>)GetCachedDelegate(methodKey);
if (result != null)
{
return(result);
}
PropertyInfo pi = type.GetProperty(memberName);
FieldInfo fi = type.GetField(memberName);
if (pi != null)
{
// Member is a Property...
MethodInfo mi = pi.GetSetMethod(true);
if (mi != null)
{
// Calling a property's get accessor is faster/cleaner using
// Delegate.CreateDelegate rather than Reflection.Emit
// TODO: Check that type conversion is adequate.
result = (Action <TObject, TValue>)Delegate.CreateDelegate(typeof(Action <TObject, TValue>), mi);
}
else
{
throw new InvalidOperationException(string.Format(Strings.ExPropertyDoesNotHaveSetter,
memberName, type.GetShortName()));
}
}
else if (fi != null)
{
// Member is a Field...
DynamicMethod dm = new DynamicMethod("Set" + memberName,
typeof(TValue), new Type[] { type }, type);
ILGenerator il = dm.GetILGenerator();
// Load the instance of the object (argument 0) onto the stack
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Ldarg_1);
// Load the value of the object's field (fi) onto the stack
il.Emit(OpCodes.Stfld, fi);
// return the value on the top of the stack
il.Emit(OpCodes.Ldc_I4_1);
il.Emit(OpCodes.Ret);
result = (Action <TObject, TValue>)dm.CreateDelegate(typeof(Func <TObject, TValue>));
}
else
{
throw new InvalidOperationException(string.Format(Strings.ExMemberIsNotPublicPropertyOrField,
memberName, type.GetShortName()));
}
AddCachedDelegate(methodKey, result);
}
}
return(result);
}
/// <summary>
/// Creates primitive type cast delegate - e.g. <see cref="Enum"/> to <see cref="sbyte"/>.
/// </summary>
/// <typeparam name="TSource">The type to cast.</typeparam>
/// <typeparam name="TTarget">Target type.</typeparam>
/// <returns>A delegate allowing to cast <typeparamref name="TSource"/> to <typeparamref name="TTarget"/>.</returns>
/// <exception cref="InvalidCastException"><c>InvalidCastException</c>.</exception>
public static Converter <TSource, TTarget> CreatePrimitiveCastDelegate <TSource, TTarget>()
where TSource : struct
where TTarget : struct
{
Type sourceType = typeof(TSource);
Type targetType = typeof(TTarget);
string methodName = string.Format("{0}_{1}_{2}", primitiveCastMethodName, sourceType, targetType);
var methodKey = new MethodCallDelegateKey(methodName);
var result = GetCachedDelegate(methodKey) as Converter <TSource, TTarget>;
if (result == null)
{
lock (cachedDelegates.SyncRoot) {
result = GetCachedDelegate(methodKey) as Converter <TSource, TTarget>;
if (result != null)
{
return(result);
}
Type actualSourceType = sourceType;
if (sourceType.IsEnum)
{
actualSourceType = Enum.GetUnderlyingType(sourceType);
}
if (!opCodeConv.ContainsKey(actualSourceType))
{
throw new InvalidCastException(string.Format(Strings.ExInvalidCast,
sourceType.GetShortName(),
targetType.GetShortName()));
}
Type actualTargetType = targetType;
if (targetType.IsEnum)
{
actualTargetType = Enum.GetUnderlyingType(targetType);
}
if (!opCodeConv.ContainsKey(actualTargetType))
{
throw new InvalidCastException(string.Format(Strings.ExInvalidCast,
sourceType.GetShortName(),
targetType.GetShortName()));
}
DynamicMethod dm = new DynamicMethod(methodName,
typeof(TTarget), new Type[] { sourceType });
ILGenerator il = dm.GetILGenerator();
il.Emit(OpCodes.Ldarg_0);
if (targetType.IsEnum)
{
if (typeOnStack[actualSourceType] != typeOnStack[actualSourceType])
{
il.Emit(opCodeConv[actualTargetType]);
}
}
il.Emit(OpCodes.Ret);
result = dm.CreateDelegate(typeof(Converter <TSource, TTarget>)) as Converter <TSource, TTarget>;
AddCachedDelegate(methodKey, result);
}
}
return(result);
}
private static TDelegateType InnerCreateGetMemberDelegate <TObject, TValue, TDelegateType>(string memberName)
where TDelegateType : class
{
Type type = typeof(TObject);
Type tValue = typeof(TValue);
var methodKey = new MethodCallDelegateKey(typeof(TDelegateType), memberName, type, tValue);
TDelegateType result = GetCachedDelegate(methodKey) as TDelegateType;
if (result == null)
{
lock (cachedDelegates.SyncRoot) {
result = GetCachedDelegate(methodKey) as TDelegateType;
if (result != null)
{
return(result);
}
PropertyInfo pi = type.GetProperty(memberName);
FieldInfo fi = type.GetField(memberName);
MethodInfo smi;
if (pi != null)
{
// Member is a Property...
MethodInfo mi = pi.GetGetMethod(true);
if (mi != null)
{
// Calling a property's get accessor is faster/cleaner using
// Delegate.CreateDelegate rather than Reflection.Emit
result = Delegate.CreateDelegate(typeof(TDelegateType), mi) as TDelegateType;
}
else
{
throw new InvalidOperationException(string.Format(Strings.ExPropertyDoesNotHaveGetter,
memberName, type.GetShortName()));
}
}
else if (fi != null)
{
// Member is a Field...
DynamicMethod dm = new DynamicMethod("Get" + memberName,
typeof(TValue), new Type[] { type }, type);
ILGenerator il = dm.GetILGenerator();
// Load the instance of the object (argument 0) onto the stack
il.Emit(OpCodes.Ldarg_0);
// Load the value of the object's field (fi) onto the stack
il.Emit(OpCodes.Ldfld, fi);
// return the value on the top of the stack
il.Emit(OpCodes.Ret);
result = dm.CreateDelegate(typeof(TDelegateType)) as TDelegateType;
}
else if (null != (smi = type.GetMethod(AspectedPrivateFieldGetterPrefix + memberName,
BindingFlags.Instance |
BindingFlags.Public |
BindingFlags.NonPublic |
BindingFlags.ExactBinding)))
{
result = Delegate.CreateDelegate(typeof(Func <TObject, TValue>), smi) as TDelegateType;
}
else
{
throw new InvalidOperationException(string.Format(Strings.ExMemberIsNotPublicPropertyOrField,
memberName, type.GetShortName()));
}
AddCachedDelegate(methodKey, result as Delegate);
}
}
return(result);
}
