public override bool TryResolve(TagType type, out TagInitializationDelegate initializer)
{
Contract.Ensures(!Contract.Result <bool>() || Contract.ValueAtReturn(out initializer) != null);
initializer = null;
return(false);
}
public override bool TryResolve(TagType type, out TagInitializationDelegate initializer)
{
if (TryGetDefaultType(type, out initializer) || initializers.TryGetValue(type, out initializer))
{
return(true);
}
else
{
if (entryAssembly != null)
{
// If there is no default resolver, try to get a resolver type from the entry assembly
IEnumerable <Type> tagHandlerTypes = entryAssembly.GetTypesByAttribute <TagHandlerForAttribute>(true, attr => attr.Type == type)
.Where(t => !t.IsInterface && !t.IsAbstract);
if (TryFindMatchingType(tagHandlerTypes, out initializer))
{
initializers.TryAdd(type, initializer);
return(true);
}
if (referencedAssemblies != null)
{
// If we still don't have a resolver type, do the search in all referenced assemblies for a resolver type
IEnumerable <Type> refdTagHandlerTypes = referencedAssemblies.SelectMany(asm => asm.GetTypesByAttribute <TagHandlerForAttribute>(true, attr => attr.Type == type))
.Where(t => !t.IsInterface && !t.IsAbstract);
if (TryFindMatchingType(tagHandlerTypes, out initializer))
{
initializers.TryAdd(type, initializer);
return(true);
}
}
}
return(false);
}
}
private static bool TryFindMatchingType(IEnumerable <Type> tagHandlerTypes, out TagInitializationDelegate initializer)
{
Contract.Requires <ArgumentNullException>(tagHandlerTypes != null);
Contract.Ensures(!Contract.Result <bool>() || Contract.ValueAtReturn(out initializer) != null);
foreach (Type handlerType in tagHandlerTypes)
{
ConstructorInfo ci = handlerType.GetConstructor(constructorFinderArray);
if (ci != null)
{
initializer = Expression.Lambda <TagInitializationDelegate>(
Expression.New(ci, readerParamExpression),
readerParamExpression
).Compile();
return(true);
}
}
initializer = null;
return(false);
}
private static bool TryGetDefaultType(TagType type, out TagInitializationDelegate initializer)
{
Contract.Ensures(!Contract.Result <bool>() || Contract.ValueAtReturn(out initializer) != null);
switch (type)
{
case TagType.End:
initializer = rdr => EndTag.Default;
break;
case TagType.Object:
initializer = rdr => new ObjectTag(rdr);
break;
case TagType.Array:
initializer = rdr => new ArrayTag(rdr);
break;
case TagType.List:
initializer = rdr => new ListTag(rdr);
break;
case TagType.SByte:
initializer = rdr => new SByteTag(rdr);
break;
case TagType.Byte:
initializer = rdr => new ByteTag(rdr);
break;
case TagType.Int16:
initializer = rdr => new Int16Tag(rdr);
break;
case TagType.UInt16:
initializer = rdr => new UInt16Tag(rdr);
break;
case TagType.Int32:
initializer = rdr => new Int32Tag(rdr);
break;
case TagType.UInt32:
initializer = rdr => new UInt32Tag(rdr);
break;
case TagType.Int64:
initializer = rdr => new Int64Tag(rdr);
break;
case TagType.UInt64:
initializer = rdr => new UInt64Tag(rdr);
break;
case TagType.Single:
initializer = rdr => new SingleTag(rdr);
break;
case TagType.Double:
initializer = rdr => new DoubleTag(rdr);
break;
case TagType.String:
initializer = rdr => new StringTag(rdr);
break;
case TagType.Date:
initializer = rdr => new DateTag(rdr);
break;
case TagType.TimeSpan:
initializer = rdr => new TimeSpanTag(rdr);
break;
case TagType.ByteVector2:
initializer = rdr => new ByteVector2Tag(rdr);
break;
case TagType.ByteVector3:
initializer = rdr => new ByteVector2Tag(rdr);
break;
case TagType.ByteVector4:
initializer = rdr => new ByteVector2Tag(rdr);
break;
case TagType.SingleVector2:
initializer = rdr => new SingleVector2Tag(rdr);
break;
case TagType.SingleVector3:
initializer = rdr => new SingleVector3Tag(rdr);
break;
case TagType.SingleVector4:
initializer = rdr => new SingleVector4Tag(rdr);
break;
case TagType.DoubleVector2:
initializer = rdr => new DoubleVector2Tag(rdr);
break;
case TagType.DoubleVector3:
initializer = rdr => new DoubleVector3Tag(rdr);
break;
case TagType.DoubleVector4:
initializer = rdr => new DoubleVector4Tag(rdr);
break;
default:
initializer = null;
break;
}
return(initializer != null);
}
public abstract bool TryResolve(TagType type, out TagInitializationDelegate initializer);