static bool TryGetActivatorConstructor(INamedTypeSymbol type, LibraryTypes libraryTypes, out List <TypeSyntax> parameters)
{
parameters = null;
if (type.IsAbstract)
{
return(false);
}
foreach (var constructor in type.GetAllMembers <IMethodSymbol>())
{
if (constructor.MethodKind != MethodKind.Constructor || constructor.DeclaredAccessibility == Accessibility.Private || constructor.IsImplicitlyDeclared)
{
continue;
}
if (constructor.HasAttribute(libraryTypes.GeneratedActivatorConstructorAttribute))
{
foreach (var parameter in constructor.Parameters)
{
var argumentType = parameter.Type.ToTypeSyntax();
(parameters ??= new()).Add(argumentType);
}
break;
}
}
return(parameters is not null);
}
private static ConstructorDeclarationSyntax GenerateConstructor(
LibraryTypes libraryTypes,
string simpleClassName,
List <ConstructorArgument> orderedFields)
{
var parameters = new List <ParameterSyntax>();
var body = new List <StatementSyntax>();
foreach (var field in orderedFields)
{
parameters.Add(Parameter(field.ParameterName.ToIdentifier()).WithType(field.Type));
body.Add(ExpressionStatement(
AssignmentExpression(
SyntaxKind.SimpleAssignmentExpression,
ThisExpression().Member(field.FieldName.ToIdentifierName()),
Unwrapped(field.ParameterName.ToIdentifierName()))));
}
var constructorDeclaration = ConstructorDeclaration(simpleClassName)
.AddModifiers(Token(SyntaxKind.PublicKeyword))
.AddParameterListParameters(parameters.ToArray())
.AddBodyStatements(body.ToArray());
return(constructorDeclaration);
private static IEnumerable <IMemberDescription> GetUnionCaseDataMembers(LibraryTypes libraryTypes, INamedTypeSymbol symbol)
{
List <IPropertySymbol> dataMembers = new();
foreach (var property in symbol.GetDeclaredInstanceMembers <IPropertySymbol>())
{
if (!property.Name.StartsWith("Item", System.StringComparison.Ordinal))
{
continue;
}
dataMembers.Add(property);
}
dataMembers.Sort(FSharpUnionCasePropertyNameComparer.Default);
ushort id = 0;
foreach (var field in dataMembers)
{
yield return(new FSharpUnionCaseFieldDescription(libraryTypes, field, id));
id++;
}
}
public static (ClassDeclarationSyntax, GeneratedProxyDescription) Generate(
LibraryTypes libraryTypes,
InvokableInterfaceDescription interfaceDescription,
MetadataModel metadataModel)
{
var generatedClassName = GetSimpleClassName(interfaceDescription);
var ctors = GenerateConstructors(generatedClassName, interfaceDescription.ProxyBaseType).ToArray();
var proxyMethods = CreateProxyMethods(libraryTypes, interfaceDescription, metadataModel).ToArray();
var classDeclaration = ClassDeclaration(generatedClassName)
.AddBaseListTypes(
SimpleBaseType(interfaceDescription.ProxyBaseType.ToTypeSyntax()),
SimpleBaseType(interfaceDescription.InterfaceType.ToTypeSyntax()))
.AddModifiers(Token(SyntaxKind.InternalKeyword), Token(SyntaxKind.SealedKeyword))
.AddAttributeLists(
AttributeList(SingletonSeparatedList(CodeGenerator.GetGeneratedCodeAttributeSyntax())))
.AddMembers(ctors)
.AddMembers(proxyMethods);
var typeParameters = interfaceDescription.TypeParameters;
if (typeParameters.Count > 0)
{
classDeclaration = SyntaxFactoryUtility.AddGenericTypeParameters(classDeclaration, typeParameters);
}
return(classDeclaration, new GeneratedProxyDescription(interfaceDescription));
}
private static List <GeneratedFieldDescription> GetFieldDescriptions(
InvokableInterfaceDescription interfaceDescription,
MetadataModel metadataModel,
LibraryTypes libraryTypes)
{
var fields = new List <GeneratedFieldDescription>();
// Add a codec field for any method parameter which does not have a static codec.
var allTypes = interfaceDescription.Methods
.Where(method => method.MethodTypeParameters.Count == 0)
.SelectMany(method => metadataModel.GeneratedInvokables[method].Members);
fields.AddRange(GetCopierFieldDescriptions(allTypes, libraryTypes));
return(fields);
}
private static IEnumerable <MemberDeclarationSyntax> CreateProxyMethods(
LibraryTypes libraryTypes,
InvokableInterfaceDescription interfaceDescription,
MetadataModel metadataModel)
{
foreach (var methodDescription in interfaceDescription.Methods)
{
yield return(CreateProxyMethod(methodDescription));
}
MethodDeclarationSyntax CreateProxyMethod(MethodDescription methodDescription)
{
var method = methodDescription.Method;
var declaration = MethodDeclaration(method.ReturnType.ToTypeSyntax(methodDescription.TypeParameterSubstitutions), method.Name.EscapeIdentifier())
.AddParameterListParameters(method.Parameters.Select((p, i) => GetParameterSyntax(i, p, methodDescription.TypeParameterSubstitutions)).ToArray())
.WithBody(
CreateAsyncProxyMethodBody(libraryTypes, metadataModel, methodDescription));
if (methodDescription.HasCollision)
{
declaration = declaration.WithModifiers(TokenList(Token(SyntaxKind.PublicKeyword)));
// Type parameter constrains are not valid on explicit interface definitions
var typeParameters = SyntaxFactoryUtility.GetTypeParameterConstraints(methodDescription.MethodTypeParameters);
foreach (var(name, constraints) in typeParameters)
{
if (constraints.Count > 0)
{
declaration = declaration.AddConstraintClauses(
TypeParameterConstraintClause(name).AddConstraints(constraints.ToArray()));
}
}
}
else
{
var explicitInterfaceSpecifier = ExplicitInterfaceSpecifier(methodDescription.Method.ContainingType.ToNameSyntax());
declaration = declaration.WithExplicitInterfaceSpecifier(explicitInterfaceSpecifier);
}
if (methodDescription.MethodTypeParameters.Count > 0)
{
declaration = declaration.WithTypeParameterList(
TypeParameterList(SeparatedList(methodDescription.MethodTypeParameters.Select(tp => TypeParameter(tp.Name)))));
}
return(declaration);
}
}
public static ClassDeclarationSyntax GenerateActivator(LibraryTypes libraryTypes, ISerializableTypeDescription type)
{
var simpleClassName = GetSimpleClassName(type);
var baseInterface = libraryTypes.IActivator_1.ToTypeSyntax(type.TypeSyntax);
var orderedFields = new List <ConstructorArgument>();
var index = 0;
if (type.ActivatorConstructorParameters is { Count : > 0 } parameters)
{
foreach (var arg in parameters)
{
orderedFields.Add(new ConstructorArgument {
Type = arg, FieldName = $"_arg{index}", ParameterName = $"arg{index}"
});
index++;
}
}
var members = new List <MemberDeclarationSyntax>();
foreach (var field in orderedFields)
{
members.Add(
FieldDeclaration(VariableDeclaration(field.Type, SingletonSeparatedList(VariableDeclarator(field.FieldName))))
.AddModifiers(
Token(SyntaxKind.PrivateKeyword),
Token(SyntaxKind.ReadOnlyKeyword)));
}
members.Add(GenerateConstructor(libraryTypes, simpleClassName, orderedFields));
members.Add(GenerateCreateMethod(libraryTypes, type, orderedFields));
var classDeclaration = ClassDeclaration(simpleClassName)
.AddBaseListTypes(SimpleBaseType(baseInterface))
.AddModifiers(Token(SyntaxKind.InternalKeyword), Token(SyntaxKind.SealedKeyword))
.AddAttributeLists(AttributeList(SingletonSeparatedList(Attribute(libraryTypes.RegisterActivatorAttribute.ToNameSyntax()))))
.AddAttributeLists(AttributeList(SingletonSeparatedList(CodeGenerator.GetGeneratedCodeAttributeSyntax())))
.AddMembers(members.ToArray());
if (type.IsGenericType)
{
classDeclaration = SyntaxFactoryUtility.AddGenericTypeParameters(classDeclaration, type.TypeParameters);
}
return(classDeclaration);
}
public static List <AttributeListSyntax> GenerateSyntax(LibraryTypes wellKnownTypes, MetadataModel model)
{
var attributes = new List <AttributeListSyntax>();
foreach (var assemblyName in model.ApplicationParts)
{
// Generate an assembly-level attribute with an instance of that class.
var attribute = AttributeList(
AttributeTargetSpecifier(Token(SyntaxKind.AssemblyKeyword)),
SingletonSeparatedList(
Attribute(wellKnownTypes.ApplicationPartAttribute.ToNameSyntax())
.AddArgumentListArguments(AttributeArgument(assemblyName.GetLiteralExpression()))));
attributes.Add(attribute);
}
return(attributes);
}
public SerializableTypeDescription(SemanticModel semanticModel, INamedTypeSymbol type, IEnumerable <IMemberDescription> members, LibraryTypes libraryTypes)
{
Type = type;
Members = members.ToList();
SemanticModel = semanticModel;
_libraryTypes = libraryTypes;
var t = type;
Accessibility accessibility = t.DeclaredAccessibility;
while (t is not null)
{
if ((int)t.DeclaredAccessibility < (int)accessibility)
{
accessibility = t.DeclaredAccessibility;
}
t = t.ContainingType;
}
Accessibility = accessibility;
TypeParameters = new();
var names = new HashSet <string>(StringComparer.Ordinal);
foreach (var tp in type.GetAllTypeParameters())
{
var tpName = GetTypeParameterName(names, tp);
TypeParameters.Add((tpName, tp));
}
SerializationHooks = new();
if (type.GetAttributes(libraryTypes.SerializationCallbacksAttribute, out var hookAttributes))
{
foreach (var hookAttribute in hookAttributes)
{
var hookType = (INamedTypeSymbol)hookAttribute.ConstructorArguments[0].Value;
SerializationHooks.Add(hookType);
}
}
if (TryGetActivatorConstructor(type, _libraryTypes, out var constructorParameters))
{
HasActivatorConstructor = true;
ActivatorConstructorParameters = constructorParameters;
}
public static ClassDeclarationSyntax GenerateCopier(
LibraryTypes libraryTypes,
ISerializableTypeDescription type)
{
var simpleClassName = GetSimpleClassName(type);
var members = new List <ISerializableMember>();
foreach (var member in type.Members)
{
if (member is ISerializableMember serializable)
{
members.Add(serializable);
}
else if (member is IFieldDescription or IPropertyDescription)
{
members.Add(new SerializableMember(libraryTypes, type, member, members.Count));
}
public static bool IsUnionCase(LibraryTypes libraryTypes, INamedTypeSymbol symbol, out INamedTypeSymbol sumType)
{
sumType = default;
var compilationAttributeType = libraryTypes.FSharpCompilationMappingAttributeOrDefault;
var sourceConstructFlagsType = libraryTypes.FSharpSourceConstructFlagsOrDefault;
var baseType = symbol.BaseType;
if (compilationAttributeType is null || sourceConstructFlagsType is null || baseType is null)
{
return(false);
}
if (!baseType.GetAttributes(compilationAttributeType, out var compilationAttributes) || compilationAttributes.Length == 0)
{
return(false);
}
var compilationAttribute = compilationAttributes[0];
var foundArg = false;
TypedConstant sourceConstructFlagsArgument = default;
foreach (var arg in compilationAttribute.ConstructorArguments)
{
if (SymbolEqualityComparer.Default.Equals(arg.Type, sourceConstructFlagsType))
{
sourceConstructFlagsArgument = arg;
foundArg = true;
break;
}
}
if (!foundArg)
{
return(false);
}
if ((int)sourceConstructFlagsArgument.Value != SourceConstructFlagsSumTypeValue)
{
return(false);
}
sumType = baseType;
return(true);
}
private static IEnumerable <IMemberDescription> GetRecordDataMembers(LibraryTypes libraryTypes, INamedTypeSymbol symbol)
{
List <(IPropertySymbol, ushort)> dataMembers = new();
foreach (var property in symbol.GetDeclaredInstanceMembers <IPropertySymbol>())
{
var id = CodeGenerator.GetId(libraryTypes, property);
if (!id.HasValue)
{
continue;
}
dataMembers.Add((property, id.Value));
}
foreach (var(property, id) in dataMembers)
{
yield return(new FSharpRecordPropertyDescription(libraryTypes, property, id));
}
}
public FSharpRecordPropertyDescription(LibraryTypes libraryTypes, IPropertySymbol property, ushort ordinal)
{
_libraryTypes = libraryTypes;
FieldId = ordinal;
_property = property;
}
public FSharpRecordTypeDescription(SemanticModel semanticModel, INamedTypeSymbol type, LibraryTypes libraryTypes) : base(semanticModel, type, GetRecordDataMembers(libraryTypes, type), libraryTypes)
{
}
private static BlockSyntax CreateAsyncProxyMethodBody(
LibraryTypes libraryTypes,
MetadataModel metadataModel,
MethodDescription methodDescription)
{
var statements = new List <StatementSyntax>();
var requestVar = IdentifierName("request");
var requestDescription = metadataModel.GeneratedInvokables[methodDescription];
var createRequestExpr = InvocationExpression(ThisExpression().Member("GetInvokable", requestDescription.TypeSyntax))
.WithArgumentList(ArgumentList(SeparatedList <ArgumentSyntax>()));
statements.Add(
LocalDeclarationStatement(
VariableDeclaration(
ParseTypeName("var"),
SingletonSeparatedList(
VariableDeclarator(
Identifier("request"))
.WithInitializer(
EqualsValueClause(createRequestExpr))))));
// Set request object fields from method parameters.
var parameterIndex = 0;
foreach (var parameter in methodDescription.Method.Parameters)
{
statements.Add(
ExpressionStatement(
AssignmentExpression(
SyntaxKind.SimpleAssignmentExpression,
requestVar.Member($"arg{parameterIndex}"),
IdentifierName(SyntaxFactoryUtility.GetSanitizedName(parameter, parameterIndex)))));
parameterIndex++;
}
var invokeMethodName = "InvokeAsync";
foreach (var attr in methodDescription.Method.GetAttributes())
{
if (attr.AttributeClass.GetAttributes(libraryTypes.InvokeMethodNameAttribute, out var attrs))
{
foreach (var methodAttr in attrs)
{
invokeMethodName = (string)methodAttr.ConstructorArguments.First().Value;
}
}
}
ITypeSymbol resultType;
var methodReturnType = (INamedTypeSymbol)methodDescription.Method.ReturnType;
if (methodReturnType.TypeArguments.Length == 1)
{
// Task<T> / ValueTask<T>
resultType = methodReturnType.TypeArguments[0];
}
else if (SymbolEqualityComparer.Default.Equals(methodReturnType, libraryTypes.Void))
{
// void
resultType = libraryTypes.Object;
}
else
{
// Task / ValueTask
resultType = libraryTypes.Object;
}
// C#: base.InvokeAsync<TReturn>(request);
var invocationExpression =
InvocationExpression(
BaseExpression().Member(invokeMethodName, resultType.ToTypeSyntax(methodDescription.TypeParameterSubstitutions)),
ArgumentList(SeparatedList(new[] { Argument(requestVar) })));
var rt = methodReturnType.ConstructedFrom;
if (SymbolEqualityComparer.Default.Equals(rt, libraryTypes.Task_1) || SymbolEqualityComparer.Default.Equals(methodReturnType, libraryTypes.Task))
{
// C#: return <invocation>.AsTask()
statements.Add(ReturnStatement(InvocationExpression(invocationExpression.Member("AsTask"), ArgumentList())));
}
else if (SymbolEqualityComparer.Default.Equals(rt, libraryTypes.ValueTask_1))
{
// C#: return <invocation>
statements.Add(ReturnStatement(invocationExpression));
}
else if (SymbolEqualityComparer.Default.Equals(methodReturnType, libraryTypes.ValueTask))
{
// C#: return new ValueTask(<invocation>)
statements.Add(ReturnStatement(ObjectCreationExpression(libraryTypes.ValueTask.ToTypeSyntax()).WithArgumentList(ArgumentList(SeparatedList(new[]
{
Argument(InvocationExpression(invocationExpression.Member("AsTask"), ArgumentList()))
})))));
}
else
{
// C#: _ = <invocation>
statements.Add(ExpressionStatement(AssignmentExpression(SyntaxKind.SimpleAssignmentExpression, IdentifierName("_"), invocationExpression)));
}
return(Block(statements));
}
public static (ClassDeclarationSyntax, GeneratedInvokerDescription) Generate(
LibraryTypes libraryTypes,
InvokableInterfaceDescription interfaceDescription,
MethodDescription method)
{
var generatedClassName = GetSimpleClassName(interfaceDescription, method);
INamedTypeSymbol baseClassType = GetBaseClassType(method);
var fieldDescriptions = GetFieldDescriptions(method, interfaceDescription);
var fields = GetFieldDeclarations(method, fieldDescriptions, libraryTypes);
var(ctor, ctorArgs) = GenerateConstructor(libraryTypes, generatedClassName, method, fieldDescriptions, baseClassType);
Accessibility accessibility = GetAccessibility(interfaceDescription);
var targetField = fieldDescriptions.OfType <TargetFieldDescription>().Single();
var accessibilityKind = accessibility switch
{
Accessibility.Public => SyntaxKind.PublicKeyword,
_ => SyntaxKind.InternalKeyword,
};
var classDeclaration = ClassDeclaration(generatedClassName)
.AddBaseListTypes(SimpleBaseType(baseClassType.ToTypeSyntax(method.TypeParameterSubstitutions)))
.AddModifiers(Token(accessibilityKind), Token(SyntaxKind.SealedKeyword), Token(SyntaxKind.PartialKeyword))
.AddAttributeLists(
AttributeList(SingletonSeparatedList(CodeGenerator.GetGeneratedCodeAttributeSyntax())))
.AddMembers(fields)
.AddMembers(ctor)
.AddMembers(
GenerateGetArgumentCount(libraryTypes, method),
GenerateGetMethodName(libraryTypes, method),
GenerateGetInterfaceName(libraryTypes, method),
GenerateGetInterfaceType(libraryTypes, method),
GenerateGetInterfaceTypeArguments(libraryTypes, method),
GenerateGetMethodTypeArguments(libraryTypes, method),
GenerateGetParameterTypes(libraryTypes, method),
GenerateGetMethod(libraryTypes),
GenerateSetTargetMethod(libraryTypes, interfaceDescription, targetField),
GenerateGetTargetMethod(targetField),
GenerateDisposeMethod(libraryTypes, method, fieldDescriptions, baseClassType),
GenerateGetArgumentMethod(libraryTypes, method, fieldDescriptions),
GenerateSetArgumentMethod(libraryTypes, method, fieldDescriptions),
GenerateInvokeInnerMethod(libraryTypes, method, fieldDescriptions, targetField));
var typeParametersWithNames = method.AllTypeParameters;
if (typeParametersWithNames.Count > 0)
{
classDeclaration = SyntaxFactoryUtility.AddGenericTypeParameters(classDeclaration, typeParametersWithNames);
}
List <INamedTypeSymbol> serializationHooks = new();
if (baseClassType.GetAttributes(libraryTypes.SerializationCallbacksAttribute, out var hookAttributes))
{
foreach (var hookAttribute in hookAttributes)
{
var hookType = (INamedTypeSymbol)hookAttribute.ConstructorArguments[0].Value;
serializationHooks.Add(hookType);
}
}
var invokerDescription = new GeneratedInvokerDescription(
interfaceDescription,
method,
accessibility,
generatedClassName,
fieldDescriptions.OfType <IMemberDescription>().ToList(),
serializationHooks,
baseClassType,
ctorArgs);
return(classDeclaration, invokerDescription);
public static ClassDeclarationSyntax GenerateCopier(
LibraryTypes libraryTypes,
ISerializableTypeDescription type)
{
var simpleClassName = GetSimpleClassName(type);
var members = new List <ISerializableMember>();
foreach (var member in type.Members)
{
if (member is ISerializableMember serializable)
{
members.Add(serializable);
}
else if (member is IFieldDescription field)
{
members.Add(new SerializableMember(libraryTypes, type, field, members.Count));
}
else if (member is MethodParameterFieldDescription methodParameter)
{
members.Add(new SerializableMethodMember(methodParameter));
}
}
var accessibility = type.Accessibility switch
{
Accessibility.Public => SyntaxKind.PublicKeyword,
_ => SyntaxKind.InternalKeyword,
};
var classDeclaration = ClassDeclaration(simpleClassName)
.AddBaseListTypes(SimpleBaseType(libraryTypes.DeepCopier_1.ToTypeSyntax(type.TypeSyntax)))
.AddModifiers(Token(accessibility), Token(SyntaxKind.SealedKeyword))
.AddAttributeLists(AttributeList(SingletonSeparatedList(CodeGenerator.GetGeneratedCodeAttributeSyntax())));
if (type.IsImmutable)
{
var copyMethod = GenerateImmutableTypeCopyMethod(type, libraryTypes);
classDeclaration = classDeclaration.AddMembers(copyMethod);
}
else
{
var fieldDescriptions = GetFieldDescriptions(type, members, libraryTypes);
var fieldDeclarations = GetFieldDeclarations(fieldDescriptions);
var ctor = GenerateConstructor(libraryTypes, simpleClassName, fieldDescriptions);
var copyMethod = GenerateMemberwiseDeepCopyMethod(type, fieldDescriptions, members, libraryTypes);
classDeclaration = classDeclaration
.AddMembers(copyMethod)
.AddMembers(fieldDeclarations)
.AddMembers(ctor);
if (!type.IsSealedType)
{
classDeclaration = classDeclaration
.AddMembers(GenerateBaseCopierDeepCopyMethod(type, fieldDescriptions, members, libraryTypes))
.AddBaseListTypes(SimpleBaseType(libraryTypes.BaseCopier_1.ToTypeSyntax(type.TypeSyntax)));
}
}
if (type.IsGenericType)
{
classDeclaration = SyntaxFactoryUtility.AddGenericTypeParameters(classDeclaration, type.TypeParameters);
}
return(classDeclaration);
}
public static ClassDeclarationSyntax GenerateMetadata(Compilation compilation, MetadataModel metadataModel, LibraryTypes libraryTypes)
{
var configParam = "config".ToIdentifierName();
var addSerializerMethod = configParam.Member("Serializers").Member("Add");
var addCopierMethod = configParam.Member("Copiers").Member("Add");
var body = new List <StatementSyntax>();
body.AddRange(
metadataModel.SerializableTypes.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addSerializerMethod,
ArgumentList(
SingletonSeparatedList(
Argument(TypeOfExpression(GetCodecTypeName(type)))))))
));
body.AddRange(
metadataModel.SerializableTypes.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addCopierMethod,
ArgumentList(
SingletonSeparatedList(
Argument(TypeOfExpression(GetCopierTypeName(type)))))))
));
body.AddRange(
metadataModel.DetectedCopiers.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addCopierMethod,
ArgumentList(
SingletonSeparatedList(
Argument(TypeOfExpression(type.ToOpenTypeSyntax()))))))
));
body.AddRange(
metadataModel.DetectedSerializers.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addSerializerMethod,
ArgumentList(
SingletonSeparatedList(
Argument(TypeOfExpression(type.ToOpenTypeSyntax()))))))
));
var addProxyMethod = configParam.Member("InterfaceProxies").Member("Add");
body.AddRange(
metadataModel.GeneratedProxies.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addProxyMethod,
ArgumentList(
SingletonSeparatedList(
Argument(TypeOfExpression(type.TypeSyntax))))))
));
var addInvokableInterfaceMethod = configParam.Member("Interfaces").Member("Add");
body.AddRange(
metadataModel.InvokableInterfaces.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addInvokableInterfaceMethod,
ArgumentList(
SingletonSeparatedList(
Argument(TypeOfExpression(type.InterfaceType.ToOpenTypeSyntax()))))))
));
var addInvokableInterfaceImplementationMethod = configParam.Member("InterfaceImplementations").Member("Add");
body.AddRange(
metadataModel.InvokableInterfaceImplementations.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addInvokableInterfaceImplementationMethod,
ArgumentList(
SingletonSeparatedList(
Argument(TypeOfExpression(type.ToOpenTypeSyntax()))))))
));
var addActivatorMethod = configParam.Member("Activators").Member("Add");
body.AddRange(
metadataModel.ActivatableTypes.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addActivatorMethod,
ArgumentList(
SingletonSeparatedList(
Argument(TypeOfExpression(GetActivatorTypeName(type)))))))
));
body.AddRange(
metadataModel.DetectedActivators.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addActivatorMethod,
ArgumentList(
SingletonSeparatedList(
Argument(TypeOfExpression(type.ToOpenTypeSyntax()))))))
));
var addWellKnownTypeIdMethod = configParam.Member("WellKnownTypeIds").Member("Add");
body.AddRange(
metadataModel.WellKnownTypeIds.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addWellKnownTypeIdMethod,
ArgumentList(SeparatedList(
new[]
{
Argument(LiteralExpression(SyntaxKind.NumericLiteralExpression, Literal(type.Id))),
Argument(TypeOfExpression(type.Type))
}))))
));
var addTypeAliasMethod = configParam.Member("WellKnownTypeAliases").Member("Add");
body.AddRange(
metadataModel.TypeAliases.Select(
type =>
(StatementSyntax)ExpressionStatement(
InvocationExpression(
addTypeAliasMethod,
ArgumentList(SeparatedList(
new[]
{
Argument(LiteralExpression(SyntaxKind.NumericLiteralExpression, Literal(type.Alias))),
Argument(TypeOfExpression(type.Type))
}))))
));
var configType = libraryTypes.TypeManifestOptions;
var configureMethod = MethodDeclaration(PredefinedType(Token(SyntaxKind.VoidKeyword)), "Configure")
.AddModifiers(Token(SyntaxKind.PublicKeyword))
.AddParameterListParameters(
Parameter(configParam.Identifier).WithType(configType.ToTypeSyntax()))
.AddBodyStatements(body.ToArray());
var interfaceType = libraryTypes.ITypeManifestProvider;
return(ClassDeclaration("Metadata_" + SyntaxGeneration.Identifier.SanitizeIdentifierName(compilation.AssemblyName))
.AddBaseListTypes(SimpleBaseType(interfaceType.ToTypeSyntax()))
.AddModifiers(Token(SyntaxKind.InternalKeyword), Token(SyntaxKind.SealedKeyword))
.AddAttributeLists(AttributeList(SingletonSeparatedList(CodeGenerator.GetGeneratedCodeAttributeSyntax())))
.AddMembers(configureMethod));
}
private static BlockSyntax CreateProxyMethodBody(
LibraryTypes libraryTypes,
MetadataModel metadataModel,
MethodDescription methodDescription)
{
var statements = new List <StatementSyntax>();
var completionVar = IdentifierName("completion");
var requestVar = IdentifierName("request");
var requestDescription = metadataModel.GeneratedInvokables[methodDescription];
var createRequestExpr = InvocationExpression(libraryTypes.InvokablePool.ToTypeSyntax().Member("Get", requestDescription.TypeSyntax))
.WithArgumentList(ArgumentList(SeparatedList <ArgumentSyntax>()));
statements.Add(
LocalDeclarationStatement(
VariableDeclaration(
ParseTypeName("var"),
SingletonSeparatedList(
VariableDeclarator(
Identifier("request"))
.WithInitializer(
EqualsValueClause(createRequestExpr))))));
// Set request object fields from method parameters.
var parameterIndex = 0;
foreach (var parameter in methodDescription.Method.Parameters)
{
statements.Add(
ExpressionStatement(
AssignmentExpression(
SyntaxKind.SimpleAssignmentExpression,
requestVar.Member($"arg{parameterIndex}"),
IdentifierName(SyntaxFactoryUtility.GetSanitizedName(parameter, parameterIndex)))));
parameterIndex++;
}
ITypeSymbol returnType;
var methodReturnType = (INamedTypeSymbol)methodDescription.Method.ReturnType;
if (methodReturnType.TypeParameters.Length == 1)
{
returnType = methodReturnType.TypeArguments[0];
}
else
{
returnType = libraryTypes.Object;
}
var createCompletionExpr = InvocationExpression(libraryTypes.ResponseCompletionSourcePool.ToTypeSyntax().Member("Get", returnType.ToTypeSyntax(methodDescription.TypeParameterSubstitutions)))
.WithArgumentList(ArgumentList(SeparatedList <ArgumentSyntax>()));
statements.Add(
LocalDeclarationStatement(
VariableDeclaration(
ParseTypeName("var"),
SingletonSeparatedList(
VariableDeclarator(
Identifier("completion"))
.WithInitializer(
EqualsValueClause(createCompletionExpr))))));
var sendRequestMethodName = "SendRequest";
foreach (var attr in methodDescription.Method.GetAttributes())
{
if (attr.AttributeClass.GetAttributes(libraryTypes.InvokeMethodNameAttribute, out var attrs))
{
foreach (var methodAttr in attrs)
{
sendRequestMethodName = (string)methodAttr.ConstructorArguments.First().Value;
}
}
}
// Issue request
statements.Add(
ExpressionStatement(
InvocationExpression(
BaseExpression().Member(sendRequestMethodName),
ArgumentList(SeparatedList(new[] { Argument(completionVar), Argument(requestVar) })))));
// Return result
string valueTaskMethodName;
if (methodReturnType.TypeArguments.Length == 1)
{
valueTaskMethodName = "AsValueTask";
}
else if (SymbolEqualityComparer.Default.Equals(methodReturnType, libraryTypes.Void))
{
valueTaskMethodName = null;
}
else
{
valueTaskMethodName = "AsVoidValueTask";
}
if (valueTaskMethodName is not null)
{
var returnVal = InvocationExpression(completionVar.Member(valueTaskMethodName));
if (SymbolEqualityComparer.Default.Equals(methodReturnType.ConstructedFrom, libraryTypes.Task_1) || SymbolEqualityComparer.Default.Equals(methodReturnType, libraryTypes.Task))
{
returnVal = InvocationExpression(returnVal.Member("AsTask"));
}
statements.Add(ReturnStatement(returnVal));
}
return(Block(statements));
}
