public static bool TryCreate(GeneratorContext context, CreateMemoizeInterfaceContext interfaceContext, IMethodSymbol methodSymbol, [NotNullWhen(true)] out MemoizedMethodMember?method)
{
var @params = methodSymbol.Parameters;
var args = new List <MemoizedMethodMemberArgument>(@params.Length);
var attributes = methodSymbol.GetAttributes();
var slidingCache = SlidingCache.MaybeCreate(context, attributes);
foreach (var param in @params)
{
if (MemoizedMethodMemberArgument.TryCreate(context, interfaceContext.ErrorLocation, param, out var arg))
{
args.Add(arg);
}
else
{
method = null;
return(false);
}
}
var returnType = methodSymbol.ReturnType;
var isAsync = methodSymbol.IsTaskOfTOrValueTaskOfT();
bool typeIsNullable;
bool typeIsReferenceType;
ITypeSymbol typeInCache;
if (isAsync)
{
if (returnType is not INamedTypeSymbol {
IsGenericType : true
} namedTypeSymbol || namedTypeSymbol.TypeArguments.Length != 1)
{
context.CreateError("Async return types must return something", $"Expected 1 generic type argument for {methodSymbol.Name}", interfaceContext.ErrorLocation);
method = null;
return(false);
}
var taskReturnObj = namedTypeSymbol.TypeArguments[0];
// TODO check it has SizeOf()
// we dont care if they are IEquatable, but we do care they implement .SizeOf() at somepoint
/*
* if (!taskReturnObj.AllInterfaces.Any(x => x.MetadataName == "IEquatable`1"))
* {
* context.CreateError("Return types must implement IEquatable", $"Async return type Task<{taskReturnObj.Name}> does not implement IEquatable", interfaceContext.ErrorLocation);
* method = null;
* return false;
* }
*/
typeInCache = taskReturnObj;
typeIsNullable = taskReturnObj.NullableAnnotation == NullableAnnotation.Annotated;
typeIsReferenceType = taskReturnObj.IsReferenceType;
}
else
{
typeInCache = methodSymbol.ReturnType;
typeIsNullable = methodSymbol.ReturnType.NullableAnnotation == NullableAnnotation.Annotated;
typeIsReferenceType = methodSymbol.ReturnType.IsReferenceType;
}
var returnTypeAttributes = methodSymbol.GetReturnTypeAttributes();
string?globalSizeOfMethod = null;
string?selfSizeOfMethod = null;
// TODO [Attribute] set on the Interface that allows you to specify a class that can calculate this for you
// Check TypeInCache has .SizeOfInBytes() method
// Check for Attribute
var sizeOfAttributeData = returnTypeAttributes.FirstOrDefault(x => SymbolEqualityComparer.Default.Equals(x.AttributeClass, context.SizeOfResultAttribute));
if (sizeOfAttributeData == null && context.GlobalSizeOfAttribute == SizeOfAttributeData.Empty)
{
var sizeOfInBytesMethod = typeInCache.GetMembers().OfType <IMethodSymbol>().FirstOrDefault(x => x.Name == "SizeOfInBytes" && x.ReturnType.IsLong());
if (sizeOfInBytesMethod == null)
{
context.CreateError("Missing SizeOfInBytes function", $"Return type '{typeInCache.ToDisplayString()}' must have a 'public long SizeOfInBytes()' function or use SizeOfResultAttribute.", interfaceContext.ErrorLocation);
method = null;
return(false);
}
else
{
selfSizeOfMethod = "SizeOfInBytes";
}
}
else
{
if (sizeOfAttributeData == null)
{
if (context.GlobalSizeOfAttribute == SizeOfAttributeData.Empty)
{
context.CreateError("Missing SizeOfInBytes function", $"Return type '{typeInCache.ToDisplayString()}' must have a 'public long SizeOfInBytes()' function or use SizeOfResultAttribute.", interfaceContext.ErrorLocation);
method = null;
return(false);
}
(globalSizeOfMethod, selfSizeOfMethod) = context.GlobalSizeOfAttribute;
}
else
{
(globalSizeOfMethod, selfSizeOfMethod) = SizeOfAttributeData.Parse(sizeOfAttributeData);
}
}
var returnTypeSizeOfMethod = new MemoizedMethodSizeOfFunction(selfSizeOfMethod, globalSizeOfMethod);
method = new MemoizedMethodMember(methodSymbol, args, slidingCache, isAsync, returnType.ToDisplayString(), typeInCache, typeIsNullable, typeIsReferenceType, returnTypeSizeOfMethod);
return(true);
}
public static bool TryCreate
(
GeneratorContext context,
MemberAccessExpressionSyntax expressionSyntax,
ITypeSymbol interfaceType,
ITypeSymbol implementationType,
string mode,
[NotNullWhen(true)] out MemoizerCall?call)
{
var interfaceAttributes = interfaceType.GetAttributes();
if (!context.TryGetInterfaceContext(interfaceType, out var interfaceContext))
{
// The Interface could exist in a referenced project which we dont have the interfacesyntax for.. lets check that
var memoizeAttribute2 = interfaceAttributes.FirstOrDefault(x => SymbolEqualityComparer.Default.Equals(x.AttributeClass, context.CreateMemoizedAttribute));
if (memoizeAttribute2 == null)
{
context.CreateError("Missing Memoized Attribute", "Interface must have the [CreateMemoizedImplementation] attribute attached", expressionSyntax.Name.GetLocation());
call = null;
return(false);
}
interfaceContext = CreateMemoizeInterfaceContext.CreateFromType(interfaceType, memoizeAttribute2, expressionSyntax.GetLocation());
}
var memoizeAttribute = interfaceContext.CreateMemoizedAttributeData;
if (!TryGetClassName(memoizeAttribute, interfaceType, out var className, out var humanId))
{
call = null;
return(false);
}
var memoizerFactory = memoizeAttribute.NamedArguments.FirstOrDefault(x => x.Key == nameof(CreateMemoizedImplementationAttribute.MemoizerFactory)).Value;
INamedTypeSymbol?memoizerFactoryTypeSymbol = null;
if (!memoizerFactory.IsNull)
{
memoizerFactoryTypeSymbol = memoizerFactory.Value as INamedTypeSymbol;
}
if (memoizerFactoryTypeSymbol != null)
{
if (!memoizerFactoryTypeSymbol.AllInterfaces.Any(i => SymbolEqualityComparer.Default.Equals(i, context.MemoizerFactoryInterface)))
{
context.CreateError($"Wrong {nameof(CreateMemoizedImplementationAttribute.MemoizerFactory)} type", $"MemoizerFactory type must implement {nameof(IMemoizerFactory)}", interfaceContext.InterfaceWithAttribute?.GetLocation() ?? expressionSyntax.Name.GetLocation());
call = null;
return(false);
}
}
var slidingCache = SlidingCache.MaybeCreate(context, interfaceAttributes);
var members = interfaceType.GetMembers();
var methods = new List <MemoizedMethodMember>(members.Length);
var methodSymbols = members.OfType <IMethodSymbol>().ToList();
// TODO Create different ArgKey class name implementations
// then Check names to see what ArgKey_ class name algo we can use
foreach (var interfaceMethod in methodSymbols)
{
if (MemoizedMethodMember.TryCreate(context, interfaceContext, interfaceMethod, out var methodMember))
{
methods.Add(methodMember);
}
else
{
call = null;
return(false);
}
}
var @namespace = GetNamespaceFrom(expressionSyntax);
call = new MemoizerCall(interfaceType, implementationType, className, methods, slidingCache, memoizerFactoryTypeSymbol, humanId, @namespace, mode);
return(true);
}