public override bool VisitPointerType(PointerType pointer, TypeQualifiers quals)
{
if (!VisitType(pointer, quals))
{
return(false);
}
var pointee = pointer.Pointee.Desugar();
if (Context.Function != null && pointer.IsPrimitiveTypeConvertibleToRef() &&
Context.Kind != MarshalKind.VTableReturnValue)
{
var refParamPtr = string.Format("__refParamPtr{0}", Context.ParameterIndex);
var templateSubstitution = pointer.Pointee as TemplateParameterSubstitutionType;
if (templateSubstitution != null)
{
var castParam = $"__{Context.Parameter.Name}{Context.ParameterIndex}";
Context.SupportBefore.WriteLine(
$"var {castParam} = ({templateSubstitution}) (object) {Context.Parameter.Name};");
Context.SupportBefore.WriteLine($"{pointer} {refParamPtr} = &{castParam};");
Context.Return.Write(refParamPtr);
}
else
{
Context.SupportBefore.WriteLine(
$"fixed ({pointer} {refParamPtr} = &{Context.Parameter.Name})");
Context.HasCodeBlock = true;
Context.SupportBefore.WriteStartBraceIndent();
Context.Return.Write(refParamPtr);
}
return(true);
}
var param = Context.Parameter;
var isRefParam = param != null && (param.IsInOut || param.IsOut);
if (CSharpTypePrinter.IsConstCharString(pointee) && isRefParam)
{
if (param.IsOut)
{
Context.Return.Write("IntPtr.Zero");
Context.ArgumentPrefix.Write("&");
}
else if (param.IsInOut)
{
Context.Return.Write(MarshalStringToUnmanaged(Context.Parameter.Name));
Context.ArgumentPrefix.Write("&");
}
else
{
Context.Return.Write(MarshalStringToUnmanaged(Context.Parameter.Name));
Context.Cleanup.WriteLine("Marshal.FreeHGlobal({0});", Context.ArgName);
}
return(true);
}
if (pointee is FunctionType)
{
var function = pointee as FunctionType;
return(VisitDelegateType(function, function.ToString()));
}
Class @class;
if (pointee.TryGetClass(out @class) && @class.IsValueType)
{
if (Context.Parameter.Usage == ParameterUsage.Out)
{
var qualifiedIdentifier = (@class.OriginalClass ?? @class).Visit(typePrinter);
Context.SupportBefore.WriteLine("var {0} = new {1}.{2}();",
Generator.GeneratedIdentifier(Context.ArgName), qualifiedIdentifier,
Helpers.InternalStruct);
}
else
{
Context.SupportBefore.WriteLine("var {0} = {1}.{2};",
Generator.GeneratedIdentifier(Context.ArgName),
Context.Parameter.Name,
Helpers.InstanceIdentifier);
}
Context.Return.Write("new global::System.IntPtr(&{0})",
Generator.GeneratedIdentifier(Context.ArgName));
return(true);
}
var marshalAsString = CSharpTypePrinter.IsConstCharString(pointer);
var finalPointee = pointer.GetFinalPointee();
PrimitiveType primitive;
if (finalPointee.IsPrimitiveType(out primitive) || finalPointee.IsEnumType() ||
marshalAsString)
{
// From MSDN: "note that a ref or out parameter is classified as a moveable
// variable". This means we must create a local variable to hold the result
// and then assign this value to the parameter.
if (isRefParam)
{
var typeName = Type.TypePrinterDelegate(finalPointee);
if (param.IsInOut)
{
Context.SupportBefore.WriteLine("{0} _{1} = {1};", typeName, param.Name);
}
else
{
Context.SupportBefore.WriteLine("{0} _{1};", typeName, param.Name);
}
Context.Return.Write("&_{0}", param.Name);
}
else
{
if (!marshalAsString &&
Context.Context.Options.MarshalCharAsManagedChar &&
primitive == PrimitiveType.Char)
{
typePrinter.PushContext(TypePrinterContextKind.Native);
Context.Return.Write(string.Format("({0}) ", pointer.Visit(typePrinter)));
typePrinter.PopContext();
}
if (marshalAsString && (Context.Kind == MarshalKind.NativeField ||
Context.Kind == MarshalKind.VTableReturnValue ||
Context.Kind == MarshalKind.Variable))
{
Context.Return.Write(MarshalStringToUnmanaged(Context.Parameter.Name));
}
else
{
Context.Return.Write(Context.Parameter.Name);
}
}
return(true);
}
return(pointer.QualifiedPointee.Visit(this));
}
public override bool VisitPointerType(PointerType pointer, TypeQualifiers quals)
{
if (!VisitType(pointer, quals))
{
return(false);
}
var qualifiedPointer = new QualifiedType(pointer, quals);
var templateSubstitution = pointer.Pointee as TemplateParameterSubstitutionType;
PointerType realPointer = null;
if (templateSubstitution != null)
{
realPointer = templateSubstitution.Replacement.Type.Desugar() as PointerType;
}
realPointer = realPointer ?? pointer;
if (Context.Function != null &&
(realPointer.IsPrimitiveTypeConvertibleToRef() ||
(templateSubstitution != null && realPointer.Pointee.IsEnumType())) &&
Context.MarshalKind != MarshalKind.VTableReturnValue)
{
var refParamPtr = $"__refParamPtr{Context.ParameterIndex}";
if (templateSubstitution != null)
{
var castParam = $"__{Context.Parameter.Name}{Context.ParameterIndex}";
Context.Before.Write($"var {castParam} = ({templateSubstitution}) ");
if (realPointer != pointer)
{
Context.Before.Write($"({CSharpTypePrinter.IntPtrType}) ");
}
Context.Before.WriteLine($"(object) {Context.Parameter.Name};");
Context.Before.Write($"var {refParamPtr} = ");
if (realPointer == pointer)
{
Context.Before.Write("&");
}
Context.Before.WriteLine($"{castParam};");
Context.Return.Write(refParamPtr);
return(true);
}
if (Context.Function.OperatorKind != CXXOperatorKind.Subscript)
{
if (Context.Parameter.Kind == ParameterKind.PropertyValue ||
qualifiedPointer.IsConstRefToPrimitive())
{
Context.Return.Write($"&{Context.Parameter.Name}");
}
else
{
Context.Before.WriteLine(
$"fixed ({realPointer} {refParamPtr} = &{Context.Parameter.Name})");
Context.HasCodeBlock = true;
Context.Before.WriteOpenBraceAndIndent();
Context.Return.Write(refParamPtr);
}
return(true);
}
}
var param = Context.Parameter;
var isRefParam = param != null && (param.IsInOut || param.IsOut);
var pointee = pointer.Pointee.Desugar();
if (pointee.IsConstCharString() && isRefParam)
{
if (param.IsOut)
{
Context.Return.Write("IntPtr.Zero");
Context.ArgumentPrefix.Write("&");
return(true);
}
pointer.QualifiedPointee.Visit(this);
if (param.IsInOut)
{
Context.ArgumentPrefix.Write("&");
}
else
{
Context.Cleanup.WriteLine("Marshal.FreeHGlobal({0});", Context.ArgName);
}
return(true);
}
if (pointee is FunctionType)
{
return(VisitDelegateType());
}
Class @class;
if (pointee.TryGetClass(out @class) && @class.IsValueType)
{
if (Context.Parameter.Usage == ParameterUsage.Out)
{
var qualifiedIdentifier = (@class.OriginalClass ?? @class).Visit(typePrinter);
Context.Before.WriteLine("var {0} = new {1}.{2}();",
Generator.GeneratedIdentifier(Context.ArgName), qualifiedIdentifier,
Helpers.InternalStruct);
}
else
{
Context.Before.WriteLine("var {0} = {1}.{2};",
Generator.GeneratedIdentifier(Context.ArgName),
Context.Parameter.Name,
Helpers.InstanceIdentifier);
}
Context.Return.Write("new global::System.IntPtr(&{0})",
Generator.GeneratedIdentifier(Context.ArgName));
return(true);
}
var finalPointee = pointer.GetFinalPointee();
PrimitiveType primitive;
if (finalPointee.IsPrimitiveType(out primitive) || finalPointee.IsEnumType())
{
// From MSDN: "note that a ref or out parameter is classified as a moveable
// variable". This means we must create a local variable to hold the result
// and then assign this value to the parameter.
if (isRefParam)
{
var typeName = Type.TypePrinterDelegate(finalPointee);
if (Context.Function.OperatorKind == CXXOperatorKind.Subscript)
{
Context.Return.Write(param.Name);
}
else
{
if (param.IsInOut)
{
Context.Before.WriteLine($"{typeName} _{param.Name} = {param.Name};");
}
else
{
Context.Before.WriteLine($"{typeName} _{param.Name};");
}
Context.Return.Write($"&_{param.Name}");
}
}
else
{
if (Context.Context.Options.MarshalCharAsManagedChar &&
primitive == PrimitiveType.Char)
{
Context.Return.Write($"({typePrinter.PrintNative(pointer)}) ");
}
if (qualifiedPointer.IsConstRefToPrimitive())
{
Context.Return.Write("&");
}
Context.Return.Write(Context.Parameter.Name);
}
return(true);
}
return(pointer.QualifiedPointee.Visit(this));
}