internal Tuple <GeneratedImplementationTypeIdentifier, Type> PregenerateImplementationType
(
[NotNull] Type classType,
[NotNull] params Type[] interfaceTypes
)
{
if (!classType.IsAbstract)
{
throw new ArgumentException
(
"The class to activate must be abstract.",
nameof(classType)
);
}
if (!(classType.IsSubclassOf(typeof(NativeLibraryBase)) || classType == typeof(NativeLibraryBase)))
{
throw new ArgumentException
(
$"The base class must be or derive from {nameof(NativeLibraryBase)}.",
nameof(classType)
);
}
if (!interfaceTypes.Any(i => i.IsInterface))
{
throw new ArgumentException
(
"The interfaces to activate on the class must be an interface type.",
nameof(interfaceTypes)
);
}
// Check if we've already generated a type for this configuration
var key = new GeneratedImplementationTypeIdentifier(classType, interfaceTypes, Options);
Type generatedType;
lock (BuilderLock)
{
if (TypeCache.TryGetValue(key, out generatedType))
{
return(new Tuple <GeneratedImplementationTypeIdentifier, Type>(key, generatedType));
}
generatedType = GenerateInterfaceImplementationType(classType, interfaceTypes);
TypeCache.TryAdd(key, generatedType);
}
return(new Tuple <GeneratedImplementationTypeIdentifier, Type>(key, generatedType));
}
/// <summary>
/// Generates the implementation type for a given class and interface combination, caching it for later use.
/// </summary>
/// <typeparam name="TBaseClass">The base class for the implementation to generate.</typeparam>
/// <typeparam name="TInterface">The interface to implement.</typeparam>
/// <exception cref="ArgumentException">Thrown if either of the type arguments are incompatible.</exception>
/// <exception cref="FileNotFoundException">
/// Thrown if the specified library can't be found in any of the loader paths.
/// </exception>
internal void PregenerateImplementationType <TBaseClass, TInterface>()
where TBaseClass : NativeLibraryBase
where TInterface : class
{
var classType = typeof(TBaseClass);
if (!classType.IsAbstract)
{
throw new ArgumentException
(
"The class to activate must be abstract.",
nameof(TBaseClass)
);
}
var interfaceType = typeof(TInterface);
if (!interfaceType.IsInterface)
{
throw new ArgumentException
(
"The interface to activate on the class must be an interface type.",
nameof(TInterface)
);
}
// Check if we've already generated a type for this configuration
var key = new GeneratedImplementationTypeIdentifier(classType, interfaceType, Options);
lock (BuilderLock)
{
if (TypeCache.TryGetValue(key, out var generatedType))
{
return;
}
generatedType = GenerateInterfaceImplementationType <TBaseClass, TInterface>();
TypeCache.TryAdd(key, generatedType);
}
}
public TClass ActivateClass <TClass, TInterface>([NotNull] string libraryPath)
where TClass : NativeLibraryBase
where TInterface : class
{
var classType = typeof(TClass);
if (!classType.IsAbstract)
{
throw new ArgumentException("The class to activate must be abstract.", nameof(TClass));
}
var interfaceType = typeof(TInterface);
if (!interfaceType.IsInterface)
{
throw new ArgumentException
(
"The interface to activate on the class must be an interface type.",
nameof(TInterface)
);
}
// Check for remapping
if (Options.HasFlagFast(EnableDllMapSupport))
{
libraryPath = new DllMapResolver().MapLibraryName(interfaceType, libraryPath);
}
// Attempt to resolve a name or path for the given library
var resolveResult = PathResolver.Resolve(libraryPath);
if (!resolveResult.IsSuccess)
{
throw new FileNotFoundException
(
$"The specified library (\"{libraryPath}\") was not found in any of the loader search paths.",
libraryPath,
resolveResult.Exception
);
}
libraryPath = resolveResult.Path;
// Check if we've already generated a type for this configuration
var key = new GeneratedImplementationTypeIdentifier(classType, interfaceType, libraryPath, Options);
if (!TypeCache.TryGetValue(key, out var generatedType))
{
lock (BuilderLock)
{
generatedType = GenerateInterfaceImplementationType <TClass, TInterface>();
TypeCache.TryAdd(key, generatedType);
}
}
try
{
var anonymousInstance = CreateAnonymousImplementationInstance <TInterface>
(
generatedType,
libraryPath,
Options,
TransformerRepository
);
return(anonymousInstance as TClass
?? throw new InvalidOperationException
(
"The resulting instance was not convertible to an instance of the class."
));
}
catch (TargetInvocationException tex)
{
if (tex.InnerException is null)
{
throw;
}
// Unwrap target invocation exceptions, since we can fail in the constructor
throw tex.InnerException;
}
}
public object ActivateClass
(
[NotNull] string libraryPath, [NotNull] Type baseClassType, [NotNull] params Type[] interfaceTypes
)
{
if (!baseClassType.IsAbstract)
{
throw new ArgumentException("The class to activate must be abstract.", nameof(baseClassType));
}
if (!interfaceTypes.Any(i => i.IsInterface))
{
throw new ArgumentException
(
"The interfaces to activate on the class must be an interface type.",
nameof(interfaceTypes)
);
}
// Attempt to resolve a name or path for the given library
var resolveResult = PathResolver.Resolve(libraryPath);
if (!resolveResult.IsSuccess)
{
throw new FileNotFoundException
(
$"The specified library (\"{libraryPath}\") was not found in any of the loader search paths.",
libraryPath,
resolveResult.Exception
);
}
libraryPath = resolveResult.Path;
// Check if we've already generated a type for this configuration
var key = new GeneratedImplementationTypeIdentifier(baseClassType, interfaceTypes, Options);
lock (BuilderLock)
{
if (!TypeCache.TryGetValue(key, out var generatedType))
{
generatedType = GenerateInterfaceImplementationType(baseClassType, interfaceTypes);
TypeCache.TryAdd(key, generatedType);
}
try
{
var anonymousInstance = CreateAnonymousImplementationInstance
(
generatedType,
libraryPath,
Options
);
return(anonymousInstance);
}
catch (TargetInvocationException tex)
{
if (tex.InnerException is null)
{
throw;
}
// Unwrap target invocation exceptions, since we can fail in the constructor
throw tex.InnerException;
}
}
}