public static MethodReference GetCacheGetterMethod(ClassWeavingContext classWeavingContext)
{
if (classWeavingContext == null)
{
throw new ArgumentNullException(nameof(classWeavingContext));
}
// TODO: Check if this can be inherited, extract to class level
List <PropertyDefinition> propertyDefinitions =
classWeavingContext.TypeDefinition.TryGetCacheGetterProperty(classWeavingContext.References);
// TODO: Also check fields
if (propertyDefinitions == null || propertyDefinitions.Count != 1)
{
throw new WeavingException("Cache Property not found or multiple properties found.");
}
MethodReference methodDefinition = classWeavingContext.TypeDefinition.Module.ImportReference(propertyDefinitions.Single().GetMethod);
if (methodDefinition.DeclaringType.GenericParameters.Any())
{
return(methodDefinition.MakeHostInstanceGeneric(methodDefinition.DeclaringType.GenericParameters.Cast <TypeReference>()
.ToArray()));
}
return(methodDefinition);
}
public override void Execute()
{
References references = Fody.References.Init(this);
foreach (WeavingCandidate weavingCandidate in ModuleDefinition.GetWeavingCandidates(references))
{
if (weavingCandidate.ClassDefinition.HasCacheAttribute(references) && !weavingCandidate.MethodDefinitions
.Where(x => !x.HasNoCacheAttribute(references))
.Any(x => x.IsEligibleForWeaving(references)))
{
WriteWarning(
$"Class {weavingCandidate.ClassDefinition.Resolve().FullName} contains [Cache] attribute but does not contain eligible methods for caching");
continue;
}
if (!weavingCandidate.ClassDefinition.IsEligibleForWeaving(references))
{
WriteWarning(
$"Class {weavingCandidate.ClassDefinition.Name} contains [Cache] attribute but does not contain a single property implementing IMemoryCache interface");
continue;
}
ClassWeavingContext classWeavingContext = new ClassWeavingContext(weavingCandidate.ClassDefinition, references);
classWeavingContext.CacheGetterMethod = MemoryCache.GetCacheGetterMethod(classWeavingContext);
foreach (MethodDefinition methodDefinition in weavingCandidate.MethodDefinitions)
{
if (!methodDefinition.IsEligibleForWeaving(references))
{
// Show warning if test was marked explicitly
if (methodDefinition.HasCacheAttribute(references))
{
WriteWarning($"Method {methodDefinition.FullName} contains [Cache] attribute but is not eligible for weaving");
break;
}
continue;
}
if (methodDefinition.HasNoCacheAttribute(references))
{
continue;
}
MethodWeavingContext methodWeavingContext = new MethodWeavingContext(classWeavingContext, methodDefinition);
MemoryCache.AddMethodVariables(methodWeavingContext);
ILProcessorContext processorContext = MemoryCache.WeaveCreateKey(methodWeavingContext);
MemoryCache.WeaveTryGetValueAndReturn(methodWeavingContext, processorContext);
MemoryCache.WeaveSetBeforeReturns(methodWeavingContext);
}
}
}
public static MethodReference GetCacheGetterMethod(ClassWeavingContext classWeavingContext)
{
if (classWeavingContext == null)
{
throw new ArgumentNullException(nameof(classWeavingContext));
}
// TODO: Check if this can be inherited, extract to class level
List <PropertyDefinition> propertyDefinitions = classWeavingContext.TypeDefinition.Properties.Where(definition =>
{
TypeDefinition typeDefinition = definition.PropertyType.Resolve();
TypeDefinition memoryCacheInterface = classWeavingContext.References.MemoryCacheInterface.Resolve();
if (definition.GetMethod.IsStatic)
{
return(false);
}
if (typeDefinition.IsInterface && typeDefinition.Equals(memoryCacheInterface))
{
return(true);
}
if (typeDefinition.Interfaces.Any(x => x.InterfaceType == memoryCacheInterface))
{
return(true);
}
return(false);
})
.ToList();
// TODO: Also check fields
if (propertyDefinitions.Count != 1)
{
throw new WeavingException("Property not found");
}
MethodDefinition methodDefinition = propertyDefinitions.Single().GetMethod;
if (methodDefinition.DeclaringType.GenericParameters.Any())
{
return(methodDefinition.MakeHostInstanceGeneric(methodDefinition.DeclaringType.GenericParameters.Cast <TypeReference>()
.ToArray()));
}
return(methodDefinition);
}
public override void Execute()
{
References references = Fody.References.Init(this);
// TODO: Extract to method
var elementsToCache = ModuleDefinition.Types.Select(type =>
{
if (type.HasCacheAttribute(references))
{
return(new { Type = type, Methods = type.Methods.ToList() });
}
return(new { Type = type, Methods = type.Methods.Where(method => method.HasCacheAttribute(references)).ToList(), });
})
.Where(x => x.Methods.Any())
.ToList();
foreach (var elementToCache in elementsToCache)
{
if (!elementToCache.Type.IsEligibleForWeaving(references))
{
// TODO: Create warning
continue;
}
ClassWeavingContext classWeavingContext = new ClassWeavingContext(elementToCache.Type, references);
classWeavingContext.CacheGetterMethod = MemoryCache.GetCacheGetterMethod(classWeavingContext);
foreach (MethodDefinition methodDefinition in elementToCache.Methods)
{
if (!methodDefinition.IsEligibleForWeaving(references))
{
// TODO: Create warning if marked explicit for weaving
continue;
}
MethodWeavingContext methodWeavingContext = new MethodWeavingContext(classWeavingContext, methodDefinition);
MemoryCache.AddMethodVariables(methodWeavingContext);
ILProcessorContext processorContext = MemoryCache.WeaveCreateKey(methodWeavingContext);
MemoryCache.WeaveTryGetValueAndReturn(methodWeavingContext, processorContext);
MemoryCache.WeaveSetBeforeReturns(methodWeavingContext);
}
}
}
public MethodWeavingContext(ClassWeavingContext classWeavingContext, MethodDefinition methodDefinition)
{
ClassWeavingContext = classWeavingContext;
MethodDefinition = methodDefinition;
}