public static CSharpElement ConvertClass(CSharpConverter converter, CppClass cppClass, CSharpElement context)
{
if (cppClass.ClassKind != CppClassKind.Class)
{
return(null);
}
if (cppClass.Functions.All(x => (x.Flags & CppFunctionFlags.Virtual) == 0))
{
return(null);
}
// Register the struct as soon as possible
var csInterfaceName = converter.GetCSharpName(cppClass, context);
var csInterface = new CSharpInterface(csInterfaceName)
{
CppElement = cppClass,
};
var container = converter.GetCSharpContainer(cppClass, context);
converter.ApplyDefaultVisibility(csInterface, container);
container.Members.Add(csInterface);
if (cppClass.BaseTypes.Count > 0)
{
var csType = converter.GetCSharpType(cppClass.BaseTypes[0].Type, context);
csInterface.BaseTypes.Add(csType);
}
csInterface.Comment = converter.GetCSharpComment(cppClass, csInterface);
return(csInterface);
}
public static CSharpElement ConvertFunction(CSharpConverter converter, CppFunction cppFunction, CSharpElement context)
{
// We process only public export functions
if (!cppFunction.IsPublicExport() || ((cppFunction.Flags & (CppFunctionFlags.Inline | CppFunctionFlags.Method | CppFunctionFlags.Constructor | CppFunctionFlags.Destructor)) != 0 && (cppFunction.Flags & CppFunctionFlags.Virtual) == 0))
{
return(null);
}
// Register the struct as soon as possible
var csFunction = new CSharpMethod()
{
CppElement = cppFunction
};
var container = converter.GetCSharpContainer(cppFunction, context);
converter.ApplyDefaultVisibility(csFunction, container);
container.Members.Add(csFunction);
converter.AddUsing(container, "System.Runtime.InteropServices");
if ((cppFunction.Flags & CppFunctionFlags.Virtual) == 0)
{
csFunction.Modifiers |= CSharpModifiers.Static | CSharpModifiers.Extern;
}
else
{
csFunction.Visibility = CSharpVisibility.None;
}
csFunction.Name = converter.GetCSharpName(cppFunction, csFunction);
csFunction.Comment = converter.GetCSharpComment(cppFunction, csFunction);
csFunction.ReturnType = converter.GetCSharpType(cppFunction.ReturnType, csFunction);
return(csFunction);
}
private CSharpElement ConvertTypedef(CSharpConverter converter, CppTypedef cppTypedef, CSharpElement context)
{
var elementType = cppTypedef.ElementType;
if (DefaultFunctionTypeConverter.IsFunctionType(elementType, out var cppFunctionType))
{
return(DefaultFunctionTypeConverter.ConvertNamedFunctionType(converter, cppFunctionType, context, cppTypedef));
}
var isFromSystemIncludes = converter.IsFromSystemIncludes(cppTypedef);
var csElementType = converter.GetCSharpType(elementType, context, true);
var noWrap = converter.Options.TypedefCodeGenKind == CppTypedefCodeGenKind.NoWrap && !converter.Options.TypedefWrapWhiteList.Contains(cppTypedef.Name);
// If:
// - the typedef is from system includes and the underlying type is not a pointer
// - or the typedef mode is "no-wrap" and is not in the whitelist
// then we bypass entirely the typedef and return immediately the element type
bool is_size_t = isFromSystemIncludes && cppTypedef.Name == "size_t";
if (noWrap || (isFromSystemIncludes && elementType.TypeKind != CppTypeKind.Pointer && !is_size_t))
{
return(csElementType);
}
// Otherwise we generate a small wrapper struct
var csStructName = converter.GetCSharpName(cppTypedef, context);
var csStruct = new CSharpStruct(csStructName)
{
CppElement = cppTypedef,
};
var container = converter.GetCSharpContainer(cppTypedef, context);
converter.ApplyDefaultVisibility(csStruct, container);
container.Members.Add(csStruct);
csStruct.Comment = converter.GetCSharpComment(cppTypedef, csStruct);
// Requires System.Runtime.InteropServices
csStruct.Attributes.Add(new CSharpStructLayoutAttribute(LayoutKind.Sequential)
{
CharSet = converter.Options.DefaultCharSet
});
// Required by StructLayout
converter.AddUsing(container, "System.Runtime.InteropServices");
var name = csStruct.Name;
csStruct.Modifiers |= CSharpModifiers.ReadOnly;
csStruct.BaseTypes.Add(new CSharpFreeType($"IEquatable<{name}>"));
// Dump the type name and attached attributes for the element type
var attachedAttributes = string.Empty;
var csElementTypeName = is_size_t ? "IntPtr" : converter.ConvertTypeReferenceToString(csElementType, out attachedAttributes);
csStruct.Members.Add(new CSharpLineElement($"public {name}({csElementTypeName} value) => this.Value = value;"));
csStruct.Members.Add(new CSharpLineElement($"{attachedAttributes}public readonly {csElementTypeName} Value;"));
csStruct.Members.Add(new CSharpLineElement($"public bool Equals({name} other) => Value.Equals(other.Value);"));
csStruct.Members.Add(new CSharpLineElement($"public override bool Equals(object obj) => obj is {name} other && Equals(other);"));
csStruct.Members.Add(new CSharpLineElement($"public override int GetHashCode() => Value.GetHashCode();"));
csStruct.Members.Add(new CSharpLineElement($"public override string ToString() => Value.ToString();"));
csStruct.Members.Add(new CSharpLineElement($"public static implicit operator {csElementTypeName}({name} from) => from.Value;"));
csStruct.Members.Add(new CSharpLineElement($"public static implicit operator {name}({csElementTypeName} from) => new {name}(from);"));
csStruct.Members.Add(new CSharpLineElement($"public static bool operator ==({name} left, {name} right) => left.Equals(right);"));
csStruct.Members.Add(new CSharpLineElement($"public static bool operator !=({name} left, {name} right) => !left.Equals(right);"));
return(csStruct);
}
public static CSharpElement ConvertField(CSharpConverter converter, CppField cppField, CSharpElement context)
{
// Early exit if this is a global variable (we don't handle dllexport)
bool isConst = cppField.Type is CppQualifiedType qualifiedType && qualifiedType.Qualifier == CppTypeQualifier.Const;
var isGlobalVariable = (!(cppField.Parent is CppClass) && !isConst) || cppField.StorageQualifier == CppStorageQualifier.Static;
if (isGlobalVariable)
{
return null;
}
var isParentClass = cppField.Parent is CppClass;
var csContainer = converter.GetCSharpContainer(cppField, context);
var isUnion = ((cppField.Parent as CppClass)?.ClassKind ?? CppClassKind.Struct) == CppClassKind.Union;
var csFieldName = converter.GetCSharpName(cppField, (CSharpElement)csContainer);
if (cppField.IsBitField)
{
CSharpBitField csBitFieldStorage = null;
for (var index = csContainer.Members.Count - 1; index >= 0; index--)
{
var member = csContainer.Members[index];
if (member is CSharpField csPreviousField)
{
csBitFieldStorage = csPreviousField as CSharpBitField;
break;
}
}
if (csBitFieldStorage == null || (csBitFieldStorage.CurrentBitWidth + cppField.BitFieldWidth) > csBitFieldStorage.MaxBitWidth)
{
var canonicalType = (CppPrimitiveType)cppField.Type.GetCanonicalType();
csBitFieldStorage = new CSharpBitField(BitFieldName + csContainer.Members.Count)
{
Visibility = CSharpVisibility.Private,
};
switch (canonicalType.Kind)
{
case CppPrimitiveKind.Bool:
csBitFieldStorage.FieldType = CSharpPrimitiveType.Byte;
csBitFieldStorage.MaxBitWidth = 8;
break;
case CppPrimitiveKind.WChar:
csBitFieldStorage.FieldType = CSharpPrimitiveType.UShort;
csBitFieldStorage.MaxBitWidth = 16;
break;
case CppPrimitiveKind.Char:
csBitFieldStorage.FieldType = CSharpPrimitiveType.Byte;
csBitFieldStorage.MaxBitWidth = 8;
break;
case CppPrimitiveKind.Short:
csBitFieldStorage.FieldType = CSharpPrimitiveType.Short;
csBitFieldStorage.MaxBitWidth = 16;
break;
case CppPrimitiveKind.Int:
csBitFieldStorage.FieldType = CSharpPrimitiveType.Int;
csBitFieldStorage.MaxBitWidth = 32;
break;
case CppPrimitiveKind.LongLong:
csBitFieldStorage.FieldType = CSharpPrimitiveType.Long;
csBitFieldStorage.MaxBitWidth = 64;
break;
case CppPrimitiveKind.UnsignedChar:
csBitFieldStorage.FieldType = CSharpPrimitiveType.Byte;
csBitFieldStorage.MaxBitWidth = 8;
break;
case CppPrimitiveKind.UnsignedShort:
csBitFieldStorage.FieldType = CSharpPrimitiveType.UShort;
csBitFieldStorage.MaxBitWidth = 16;
break;
case CppPrimitiveKind.UnsignedInt:
csBitFieldStorage.FieldType = CSharpPrimitiveType.UInt;
csBitFieldStorage.MaxBitWidth = 32;
break;
case CppPrimitiveKind.UnsignedLongLong:
csBitFieldStorage.FieldType = CSharpPrimitiveType.ULong;
csBitFieldStorage.MaxBitWidth = 64;
break;
default:
csBitFieldStorage.FieldType = new CSharpFreeType("unsupported_bitfield_type_" + canonicalType);
csBitFieldStorage.MaxBitWidth = 128;
break;
}
csContainer.Members.Add(csBitFieldStorage);
}
int currentBitOffset = csBitFieldStorage.CurrentBitWidth;
csBitFieldStorage.CurrentBitWidth += cppField.BitFieldWidth;
var csProperty = new CSharpProperty(csFieldName)
{
CppElement = cppField,
LinkedField = csBitFieldStorage,
};
converter.ApplyDefaultVisibility(csProperty, csContainer);
csProperty.Comment = converter.GetCSharpComment(cppField, csProperty);
var bitmask = (1L << cppField.BitFieldWidth) - 1;
var bitmaskStr = $"0b{Convert.ToString(bitmask, 2)}";
var notBitMaskStr = Convert.ToString(~(bitmask << currentBitOffset), 2);
if (notBitMaskStr.Length > csBitFieldStorage.MaxBitWidth)
{
notBitMaskStr = notBitMaskStr.Substring(notBitMaskStr.Length - csBitFieldStorage.MaxBitWidth);
}
csProperty.ReturnType = converter.GetCSharpType(cppField.Type, csProperty);
csProperty.GetBody = (writer, element) =>
{
writer.Write($"return unchecked((");
csProperty.ReturnType.DumpReferenceTo(writer);
writer.Write(")");
writer.Write($"(({csBitFieldStorage.Name} >> {currentBitOffset}) & {bitmaskStr})");
writer.Write(");");
writer.WriteLine();
};
csProperty.SetBody = (writer, element) =>
{
writer.Write($"{csBitFieldStorage.Name} = ({csBitFieldStorage.Name} & unchecked((");
csBitFieldStorage.FieldType.DumpReferenceTo(writer);
writer.Write($")0b{notBitMaskStr})) | ((((");
csBitFieldStorage.FieldType.DumpReferenceTo(writer);
writer.Write(")value) & (unchecked((");
csBitFieldStorage.FieldType.DumpReferenceTo(writer);
writer.Write($"){bitmaskStr})) << {currentBitOffset}));");
writer.WriteLine();
};
csContainer.Members.Add(csProperty);
return csProperty;
}
else
{
var parentName = cppField.Parent is CppClass cppClass ? cppClass.Name : string.Empty;
var csField = new CSharpField(csFieldName) { CppElement = cppField };
converter.ApplyDefaultVisibility(csField, csContainer);
if (isConst)
{
if (isParentClass)
{
csField.Modifiers |= CSharpModifiers.ReadOnly;
}
else
{
csField.Modifiers |= CSharpModifiers.Const;
}
}
csContainer.Members.Add(csField);
csField.Comment = converter.GetCSharpComment(cppField, csField);
if (isUnion)
{
csField.Attributes.Add(new CSharpFreeAttribute("FieldOffset(0)"));
converter.AddUsing(csContainer, "System.Runtime.InteropServices");
}
csField.FieldType = converter.GetCSharpType(cppField.Type, csField);
if (cppField.InitExpression != null)
{
if (cppField.InitExpression.Kind == CppExpressionKind.Unexposed)
{
csField.InitValue = cppField.InitValue?.Value?.ToString();
}
else
{
csField.InitValue = converter.ConvertExpression(cppField.InitExpression, context, csField.FieldType);
}
}
return csField;
}
}
public static CSharpElement ConvertClass(CSharpConverter converter, CppClass cppClass, CSharpElement context)
{
// This converter supports only plain struct or union
if (cppClass.ClassKind == CppClassKind.Class && cppClass.Functions.Any(x => (x.Flags & CppFunctionFlags.Virtual) != 0))
{
return(null);
}
// Register the struct as soon as possible
var csStructName = converter.GetCSharpName(cppClass, context);
var csStruct = new CSharpStruct(csStructName)
{
CppElement = cppClass,
};
var container = converter.GetCSharpContainer(cppClass, context);
converter.ApplyDefaultVisibility(csStruct, container);
if (container is CSharpInterface)
{
container = container.Parent;
}
container.Members.Add(csStruct);
csStruct.Comment = converter.GetCSharpComment(cppClass, csStruct);
bool isUnion = cppClass.ClassKind == CppClassKind.Union;
// Requires System.Runtime.InteropServices
csStruct.Attributes.Add(isUnion ?
new CSharpStructLayoutAttribute(LayoutKind.Explicit)
{
CharSet = converter.Options.DefaultCharSet
} :
new CSharpStructLayoutAttribute(LayoutKind.Sequential)
{
CharSet = converter.Options.DefaultCharSet
}
);
// Required by StructLayout
converter.AddUsing(container, "System.Runtime.InteropServices");
if (cppClass.BaseTypes.Count == 1)
{
var csBaseType = converter.GetCSharpType(cppClass.BaseTypes[0].Type, context, false);
csStruct.Members.Add(new CSharpField("@base")
{
FieldType = csBaseType, Visibility = CSharpVisibility.Public
});
}
// For opaque type we use a standard representation
if (!cppClass.IsDefinition && cppClass.Fields.Count == 0)
{
csStruct.Modifiers |= CSharpModifiers.ReadOnly;
csStruct.BaseTypes.Add(new CSharpFreeType($"IEquatable<{csStruct.Name}>"));
csStruct.Members.Add(new CSharpLineElement("private readonly IntPtr _handle;"));
csStruct.Members.Add(new CSharpLineElement($"public {csStruct.Name}(IntPtr handle) => _handle = handle;"));
csStruct.Members.Add(new CSharpLineElement("public IntPtr Handle => _handle;"));
csStruct.Members.Add(new CSharpLineElement($"public bool Equals({csStruct.Name} other) => _handle.Equals(other._handle);"));
csStruct.Members.Add(new CSharpLineElement($"public override bool Equals(object obj) => obj is {csStruct.Name} other && Equals(other);"));
csStruct.Members.Add(new CSharpLineElement($"public override int GetHashCode() => _handle.GetHashCode();"));
csStruct.Members.Add(new CSharpLineElement($"public override string ToString() => \"0x\" + (IntPtr.Size == 8 ? _handle.ToString(\"X16\") : _handle.ToString(\"X8\"));"));
csStruct.Members.Add(new CSharpLineElement($"public static bool operator ==({csStruct.Name} left, {csStruct.Name} right) => left.Equals(right);"));
csStruct.Members.Add(new CSharpLineElement($"public static bool operator !=({csStruct.Name} left, {csStruct.Name} right) => !left.Equals(right);"));
}
// If we have any anonymous structs/unions for a field type
// try to compute a name for them before processing them
foreach (var cppField in cppClass.Fields)
{
var fieldType = cppField.Type;
if (fieldType is CppClass cppFieldTypeClass && cppFieldTypeClass.IsAnonymous && string.IsNullOrEmpty(cppFieldTypeClass.Name))
{
var parentName = string.Empty;
if (cppFieldTypeClass.Parent is CppClass cppParentClass)
{
parentName = cppParentClass.Name;
}
if (cppFieldTypeClass.ClassKind == CppClassKind.Union)
{
parentName = parentName == string.Empty ? "union" : parentName + "_union";
}
cppFieldTypeClass.Name = $"{parentName}_{cppField.Name}";
}
}
return(csStruct);
}
