public MemberDeclarationSyntax GenerateCode(CsInterface csElement)
{
var vtblClassName = csElement.VtblName.Split('.').Last();
// Default: at least protected to enable inheritance.
var vtblVisibility = csElement.VtblVisibility ?? Visibility.ProtectedInternal;
StatementSyntax VtblMethodSelector(CsMethod method)
{
StatementSyntax MethodBuilder(PlatformDetectionType platform)
{
var arguments = new[]
{
Argument(
ObjectCreationExpression(IdentifierName(GetMethodDelegateName(method, platform)))
.WithArgumentList(
ArgumentList(
SingletonSeparatedList(
Argument(
IdentifierName(
$"{method.Name}{GeneratorHelpers.GetPlatformSpecificSuffix(platform)}"
)
)
)
)
)
),
Argument(
LiteralExpression(
SyntaxKind.NumericLiteralExpression,
Literal((platform & PlatformDetectionType.Windows) != 0
? method.WindowsOffset
: method.Offset)
)
)
};
return(ExpressionStatement(
InvocationExpression(IdentifierName("AddMethod"))
.WithArgumentList(ArgumentList(SeparatedList(arguments)))
));
}
return(GeneratorHelpers.GetPlatformSpecificStatements(GlobalNamespace, Generators.Config,
method.InteropSignatures.Keys, MethodBuilder));
}
List <MemberDeclarationSyntax> members = new()
{
ConstructorDeclaration(Identifier(vtblClassName))
.WithModifiers(TokenList(Token(SyntaxKind.PublicKeyword)))
.WithParameterList(
ParameterList(
SingletonSeparatedList(
Parameter(Identifier("numberOfCallbackMethods"))
.WithType(PredefinedType(Token(SyntaxKind.IntKeyword)))
)
)
)
.WithInitializer(
ConstructorInitializer(
SyntaxKind.BaseConstructorInitializer,
ArgumentList(
SingletonSeparatedList(
Argument(
BinaryExpression(
SyntaxKind.AddExpression,
IdentifierName("numberOfCallbackMethods"),
LiteralExpression(
SyntaxKind.NumericLiteralExpression,
Literal(csElement.MethodList.Count)
)
)
)
)
)
)
)
.WithBody(
Block(
csElement.Methods
.OrderBy(method => method.Offset)
.Select(VtblMethodSelector)
)
)
};
members.AddRange(csElement.Methods.SelectMany(method => Generators.ShadowCallable.GenerateCode(method)));
return(ClassDeclaration(vtblClassName)
.WithModifiers(
ModelUtilities.VisibilityToTokenList(vtblVisibility, SyntaxKind.UnsafeKeyword,
SyntaxKind.PartialKeyword)
)
.WithAttributeLists(DebuggerTypeProxyAttribute)
.WithBaseList(
BaseList(
SingletonSeparatedList <BaseTypeSyntax>(
SimpleBaseType(
csElement.Base != null
? IdentifierName(csElement.Base.VtblName)
: GlobalNamespace.GetTypeNameSyntax(WellKnownName.CppObjectVtbl)
)
)
)
)
.WithMembers(List(members)));
}
internal static string GetMethodDelegateName(CsCallable csElement, PlatformDetectionType platform) => csElement.Name + "Delegate" + GeneratorHelpers.GetPlatformSpecificSuffix(platform);
public override IEnumerable <MemberDeclarationSyntax> GenerateCode(CsField csElement)
{
if (csElement.IsBoolToInt && !csElement.IsArray)
{
yield return(GenerateBackingField(csElement, csElement.MarshalType));
yield return(GenerateProperty(
csElement, PredefinedType(Token(SyntaxKind.BoolKeyword)),
GeneratorHelpers.GenerateIntToBoolConversion,
(_, value) => GeneratorHelpers.CastExpression(
ParseTypeName(csElement.MarshalType.QualifiedName),
GeneratorHelpers.GenerateBoolToIntConversion(value)
)
));
}
else if (csElement.IsArray && !csElement.IsString)
{
var elementType = ParseTypeName(csElement.PublicType.QualifiedName);
yield return(GenerateBackingField(csElement, csElement.PublicType, isArray: true));
yield return(GenerateProperty(
csElement, ArrayType(elementType, SingletonList(ArrayRankSpecifier())),
value => AssignmentExpression(
SyntaxKind.CoalesceAssignmentExpression,
value,
ObjectCreationExpression(
ArrayType(
elementType,
SingletonList(
ArrayRankSpecifier(
SingletonSeparatedList <ExpressionSyntax>(
LiteralExpression(
SyntaxKind.NumericLiteralExpression,
Literal(csElement.ArrayDimensionValue)
)
)
)
)
)
)
),
null
));
}
else if (csElement.IsBitField)
{
PropertyValueGetTransform getterTransform;
PropertyValueSetTransform setterTransform;
TypeSyntax propertyType;
if (csElement.IsBoolBitField)
{
getterTransform = GeneratorHelpers.GenerateIntToBoolConversion;
setterTransform = (_, value) => GeneratorHelpers.GenerateBoolToIntConversion(value);
propertyType = PredefinedType(Token(SyntaxKind.BoolKeyword));
}
else
{
getterTransform = valueExpression => GeneratorHelpers.CastExpression(
ParseTypeName(csElement.PublicType.QualifiedName),
valueExpression
);
setterTransform = null;
propertyType = ParseTypeName(csElement.PublicType.QualifiedName);
}
yield return(GenerateBackingField(csElement, csElement.PublicType));
var bitMask = LiteralExpression(SyntaxKind.NumericLiteralExpression, Literal(csElement.BitMask));
var bitOffset = LiteralExpression(
SyntaxKind.NumericLiteralExpression, Literal(csElement.BitOffset)
);
yield return(GenerateProperty(
csElement, propertyType,
Compose(
getterTransform,
value => BinaryExpression(
SyntaxKind.BitwiseAndExpression,
GeneratorHelpers.WrapInParentheses(
BinaryExpression(SyntaxKind.RightShiftExpression, value, bitOffset)
),
bitMask
)
),
Compose(
(oldValue, value) => GeneratorHelpers.CastExpression(
ParseTypeName(csElement.PublicType.QualifiedName),
BinaryExpression(
SyntaxKind.BitwiseOrExpression,
GeneratorHelpers.WrapInParentheses(
BinaryExpression(
SyntaxKind.BitwiseAndExpression,
oldValue,
PrefixUnaryExpression(
SyntaxKind.BitwiseNotExpression,
GeneratorHelpers.WrapInParentheses(
BinaryExpression(SyntaxKind.LeftShiftExpression, bitMask, bitOffset)
)
)
)
),
GeneratorHelpers.WrapInParentheses(
BinaryExpression(
SyntaxKind.LeftShiftExpression,
GeneratorHelpers.WrapInParentheses(
BinaryExpression(SyntaxKind.BitwiseAndExpression, value, bitMask)
),
bitOffset
)
)
)
),
setterTransform
)
));
}
else
{
yield return(GenerateBackingField(
csElement, csElement.PublicType, propertyBacking: false, document: true
));
}
}
public IEnumerable<MemberDeclarationSyntax> GenerateCode(CsFunction csElement)
{
foreach (var member in Generators.Callable.GenerateCode(csElement))
{
yield return member;
}
foreach (var sig in csElement.InteropSignatures)
{
yield return MethodDeclaration(ParseTypeName(sig.Value.ReturnType.TypeName), $"{csElement.CppElementName}{GeneratorHelpers.GetPlatformSpecificSuffix(sig.Key)}")
.WithModifiers(
TokenList(
Token(SyntaxKind.PrivateKeyword),
Token(SyntaxKind.UnsafeKeyword),
Token(SyntaxKind.StaticKeyword),
Token(SyntaxKind.ExternKeyword)))
.WithAttributeLists(SingletonList(AttributeList(SingletonSeparatedList(
Attribute(
QualifiedName(
QualifiedName(
QualifiedName(
IdentifierName("System"),
IdentifierName("Runtime")),
IdentifierName("InteropServices")),
IdentifierName("DllImportAttribute")))
.WithArgumentList(
AttributeArgumentList(
SeparatedList(
new[]
{
AttributeArgument(
IdentifierName(csElement.DllName)),
AttributeArgument(
LiteralExpression(
SyntaxKind.StringLiteralExpression,
Literal(csElement.CppElementName)))
.WithNameEquals(
NameEquals(
IdentifierName("EntryPoint"))),
AttributeArgument(
MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
IdentifierName("System"),
IdentifierName("Runtime")),
IdentifierName("InteropServices")),
IdentifierName("CallingConvention")),
IdentifierName(csElement.CallingConvention)))
.WithNameEquals(
NameEquals(
IdentifierName("CallingConvention")))
})))))))
.WithParameterList(ParameterList(SeparatedList(
sig.Value.ParameterTypes.Select((param, i) =>
Parameter(Identifier($"param{i}"))
.WithType(ParseTypeName(param.TypeName))))))
.WithSemicolonToken(Token(SyntaxKind.SemicolonToken));
}
}
private DelegateDeclarationSyntax GenerateDelegateDeclaration(CsCallable csElement, PlatformDetectionType platform, InteropMethodSignature sig)
{
return(DelegateDeclaration(ParseTypeName(sig.ReturnType.TypeName), $"{csElement.Name}Delegate{GeneratorHelpers.GetPlatformSpecificSuffix(platform)}")
.AddAttributeLists(
AttributeList(
SingletonSeparatedList(
Attribute(
ParseName("System.Runtime.InteropServices.UnmanagedFunctionPointerAttribute"))
.AddArgumentListArguments(
AttributeArgument(
MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
IdentifierName("System"),
IdentifierName("Runtime")),
IdentifierName("InteropServices")),
IdentifierName("CallingConvention")),
IdentifierName(sig.CallingConvention)))))))
.WithParameterList(
ParameterList(
(csElement is CsMethod ?
SingletonSeparatedList(
Parameter(Identifier("thisObject"))
.WithType(ParseTypeName("System.IntPtr")))
: default)
public override IEnumerable <MemberDeclarationSyntax> GenerateCode(CsCallable csElement)
{
// Documentation
var documentationTrivia = GenerateDocumentationTrivia(csElement);
// method signature
var methodDeclaration = MethodDeclaration(ParseTypeName(csElement.PublicReturnTypeQualifiedName), csElement.Name)
.WithModifiers(TokenList(ParseTokens(csElement.VisibilityName)).Add(Token(SyntaxKind.UnsafeKeyword)))
.WithParameterList(
ParameterList(
SeparatedList(
csElement.PublicParameters.Select(param =>
Generators.Marshalling.GetMarshaller(param).GenerateManagedParameter(param)
.WithDefault(param.DefaultValue == null ? default
: EqualsValueClause(ParseExpression(param.DefaultValue)))
)
)
)
)
.WithLeadingTrivia(Trivia(documentationTrivia));
if (csElement.SignatureOnly)
{
yield return(methodDeclaration
.WithSemicolonToken(Token(SyntaxKind.SemicolonToken))
.WithModifiers(TokenList()));
yield break;
}
var statements = new List <StatementSyntax>();
foreach (var param in csElement.Parameters)
{
if ((param.Relations?.Count ?? 0) == 0)
{
if (param.UsedAsReturn)
{
statements.Add(GenerateManagedHiddenMarshallableProlog(param));
}
statements.AddRange(Generators.Marshalling.GetMarshaller(param).GenerateManagedToNativeProlog(param));
}
else
{
statements.Add(GenerateManagedHiddenMarshallableProlog(param));
foreach (var relation in param.Relations)
{
if (!ValidRelationInScenario(relation))
{
logger.Error(LoggingCodes.InvalidRelationInScenario, $"The relation \"{relation}\" is invalid in a method/function.");
continue;
}
var marshaller = Generators.Marshalling.GetRelationMarshaller(relation);
StatementSyntax marshalToNative;
var relatedMarshallableName = (relation as LengthRelation)?.Identifier;
if (relatedMarshallableName is null)
{
marshalToNative = marshaller.GenerateManagedToNative(null, param);
}
else
{
var relatedParameter = csElement.Parameters.Find(p => p.CppElementName == relatedMarshallableName);
if (relatedParameter is null)
{
logger.Error(LoggingCodes.InvalidRelationInScenario, $"The relation with \"{relatedMarshallableName}\" parameter is invalid in a method/function \"{csElement.Name}\".");
continue;
}
marshalToNative = marshaller.GenerateManagedToNative(relatedParameter, param);
}
if (marshalToNative != null)
{
statements.Add(marshalToNative);
}
}
statements.AddRange(Generators.Marshalling.GetMarshaller(param).GenerateManagedToNativeProlog(param));
}
}
if (csElement.HasReturnType)
{
statements.Add(GenerateManagedHiddenMarshallableProlog(csElement.ReturnValue));
statements.AddRange(
Generators.Marshalling.GetMarshaller(csElement.ReturnValue)
.GenerateManagedToNativeProlog(csElement.ReturnValue));
}
foreach (var param in csElement.Parameters)
{
if (param.IsIn || param.IsRefIn || param.IsRef)
{
var marshaller = Generators.Marshalling.GetMarshaller(param);
var marshalToNative = marshaller.GenerateManagedToNative(param, true);
if (marshalToNative != null)
{
statements.Add(marshalToNative);
}
}
}
var fixedStatements = csElement.PublicParameters
.Select(param => Generators.Marshalling.GetMarshaller(param).GeneratePin(param))
.Where(stmt => stmt != null).ToList();
var callStmt = GeneratorHelpers.GetPlatformSpecificStatements(
globalNamespace,
Generators.Config,
csElement.InteropSignatures.Keys,
(platform) =>
ExpressionStatement(
Generators.NativeInvocation.GenerateCode((csElement, platform, csElement.InteropSignatures[platform]))));
var fixedStatement = fixedStatements.FirstOrDefault()?.WithStatement(callStmt);
foreach (var statement in fixedStatements.Skip(1))
{
fixedStatement = statement.WithStatement(fixedStatement);
}
statements.Add(fixedStatement ?? callStmt);
foreach (var param in csElement.Parameters)
{
if (param.IsRef || param.IsOut)
{
var marshaller = Generators.Marshalling.GetMarshaller(param);
var marshalFromNative = marshaller.GenerateNativeToManaged(param, true);
if (marshalFromNative != null)
{
statements.Add(marshalFromNative);
}
}
}
if (csElement.HasReturnType)
{
var marshaller = Generators.Marshalling.GetMarshaller(csElement.ReturnValue);
var marshalReturnType = marshaller.GenerateNativeToManaged(csElement.ReturnValue, true);
if (marshalReturnType != null)
{
statements.Add(marshalReturnType);
}
}
statements.AddRange(csElement.Parameters
.Where(param => !param.IsOut)
.Select(param => Generators.Marshalling.GetMarshaller(param).GenerateNativeCleanup(param, true))
.Where(param => param != null));
if ((csElement.ReturnValue.PublicType.Name == globalNamespace.GetTypeName(WellKnownName.Result)) && csElement.CheckReturnType)
{
statements.Add(ExpressionStatement(
InvocationExpression(
MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression,
IdentifierName(csElement.ReturnValue.Name),
IdentifierName("CheckError")))));
}
// Return
if (csElement.HasPublicReturnType)
{
if (csElement.HasReturnTypeParameter || csElement.ForceReturnType || !csElement.HideReturnType)
{
statements.Add(ReturnStatement(IdentifierName(csElement.ReturnName)));
}
}
yield return(methodDeclaration.WithBody(Block(statements)));
}