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Fix marshaling custom type array to C# with MarshalAs used

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This commit is contained in:
Wojtek Figat
2024-02-15 18:28:51 +01:00
parent 5fc7c6e190
commit c7a449fe1c
2 changed files with 88 additions and 27 deletions
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72
Source/Tools/Flax.Build/Bindings/BindingsGenerator.CSharp.cs
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@@ -270,7 +270,7 @@ namespace Flax.Build.Bindings
return value;
}
private static string GenerateCSharpNativeToManaged(BuildData buildData, TypeInfo typeInfo, ApiTypeInfo caller)
private static string GenerateCSharpNativeToManaged(BuildData buildData, TypeInfo typeInfo, ApiTypeInfo caller, bool marshalling = false)
{
string result;
if (typeInfo?.Type == null)
@@ -280,7 +280,7 @@ namespace Flax.Build.Bindings
if (typeInfo.IsArray)
{
typeInfo.IsArray = false;
result = GenerateCSharpNativeToManaged(buildData, typeInfo, caller);
result = GenerateCSharpNativeToManaged(buildData, typeInfo, caller, marshalling);
typeInfo.IsArray = true;
return result + "[]";
}
@@ -307,7 +307,7 @@ namespace Flax.Build.Bindings
// Object reference property
if (typeInfo.IsObjectRef)
return GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller);
return GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller, marshalling);
if (typeInfo.Type == "SoftTypeReference" || typeInfo.Type == "SoftObjectReference")
return typeInfo.Type;
@@ -317,15 +317,25 @@ namespace Flax.Build.Bindings
#else
if ((typeInfo.Type == "Array" || typeInfo.Type == "Span" || typeInfo.Type == "DataContainer") && typeInfo.GenericArgs != null)
#endif
return GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller) + "[]";
{
var arrayTypeInfo = typeInfo.GenericArgs[0];
if (marshalling)
{
// Convert array that uses different type for marshalling
var arrayApiType = FindApiTypeInfo(buildData, arrayTypeInfo, caller);
if (arrayApiType != null && arrayApiType.MarshalAs != null)
arrayTypeInfo = arrayApiType.MarshalAs;
}
return GenerateCSharpNativeToManaged(buildData, arrayTypeInfo, caller) + "[]";
}
// Dictionary
if (typeInfo.Type == "Dictionary" && typeInfo.GenericArgs != null)
return string.Format("System.Collections.Generic.Dictionary<{0}, {1}>", GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller), GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[1], caller));
return string.Format("System.Collections.Generic.Dictionary<{0}, {1}>", GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller, marshalling), GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[1], caller, marshalling));
// HashSet
if (typeInfo.Type == "HashSet" && typeInfo.GenericArgs != null)
return string.Format("System.Collections.Generic.HashSet<{0}>", GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller));
return string.Format("System.Collections.Generic.HashSet<{0}>", GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller, marshalling));
// BitArray
if (typeInfo.Type == "BitArray" && typeInfo.GenericArgs != null)
@@ -348,16 +358,16 @@ namespace Flax.Build.Bindings
// TODO: generate delegates globally in the module namespace to share more code (smaller binary size)
var key = string.Empty;
for (int i = 0; i < typeInfo.GenericArgs.Count; i++)
key += GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[i], caller);
key += GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[i], caller, marshalling);
if (!CSharpAdditionalCodeCache.TryGetValue(key, out var delegateName))
{
delegateName = "Delegate" + CSharpAdditionalCodeCache.Count;
var signature = $"public delegate {GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller)} {delegateName}(";
var signature = $"public delegate {GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller, marshalling)} {delegateName}(";
for (int i = 1; i < typeInfo.GenericArgs.Count; i++)
{
if (i != 1)
signature += ", ";
signature += GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[i], caller);
signature += GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[i], caller, marshalling);
signature += $" arg{(i - 1)}";
}
signature += ");";
@@ -390,11 +400,14 @@ namespace Flax.Build.Bindings
{
typeName += '<';
foreach (var arg in typeInfo.GenericArgs)
typeName += GenerateCSharpNativeToManaged(buildData, arg, caller);
typeName += GenerateCSharpNativeToManaged(buildData, arg, caller, marshalling);
typeName += '>';
}
if (apiType != null)
{
if (marshalling && apiType.MarshalAs != null)
return GenerateCSharpNativeToManaged(buildData, apiType.MarshalAs, caller);
// Add reference to the namespace
CSharpUsedNamespaces.Add(apiType.Namespace);
var apiTypeParent = apiType.Parent;
@@ -419,11 +432,11 @@ namespace Flax.Build.Bindings
return typeName;
}
private static string GenerateCSharpManagedToNativeType(BuildData buildData, TypeInfo typeInfo, ApiTypeInfo caller)
private static string GenerateCSharpManagedToNativeType(BuildData buildData, TypeInfo typeInfo, ApiTypeInfo caller, bool marshalling = false)
{
// Fixed-size array
if (typeInfo.IsArray)
return GenerateCSharpNativeToManaged(buildData, typeInfo, caller);
return GenerateCSharpNativeToManaged(buildData, typeInfo, caller, marshalling);
// Find API type info
var apiType = FindApiTypeInfo(buildData, typeInfo, caller);
@@ -439,7 +452,7 @@ namespace Flax.Build.Bindings
}
if (apiType.MarshalAs != null)
return GenerateCSharpManagedToNativeType(buildData, apiType.MarshalAs, caller);
return GenerateCSharpManagedToNativeType(buildData, apiType.MarshalAs, caller, marshalling);
if (apiType.IsScriptingObject || apiType.IsInterface)
return "IntPtr";
}
@@ -452,7 +465,7 @@ namespace Flax.Build.Bindings
if (typeInfo.Type == "Function" && typeInfo.GenericArgs != null)
return "IntPtr";
return GenerateCSharpNativeToManaged(buildData, typeInfo, caller);
return GenerateCSharpNativeToManaged(buildData, typeInfo, caller, marshalling);
}
private static string GenerateCSharpManagedToNativeConverter(BuildData buildData, TypeInfo typeInfo, ApiTypeInfo caller)
@@ -485,6 +498,18 @@ namespace Flax.Build.Bindings
case "Function":
// delegate
return "NativeInterop.GetFunctionPointerForDelegate({0})";
case "Array":
case "Span":
case "DataContainer":
if (typeInfo.GenericArgs != null)
{
// Convert array that uses different type for marshalling
var arrayTypeInfo = typeInfo.GenericArgs[0];
var arrayApiType = FindApiTypeInfo(buildData, arrayTypeInfo, caller);
if (arrayApiType != null && arrayApiType.MarshalAs != null)
return $"{{0}}.ConvertArray(x => ({GenerateCSharpNativeToManaged(buildData, arrayApiType.MarshalAs, caller)})x)";
}
return string.Empty;
default:
var apiType = FindApiTypeInfo(buildData, typeInfo, caller);
if (apiType != null)
@@ -531,9 +556,9 @@ namespace Flax.Build.Bindings
{
var apiType = FindApiTypeInfo(buildData, functionInfo.ReturnType, caller);
if (apiType != null && apiType.MarshalAs != null)
returnValueType = GenerateCSharpNativeToManaged(buildData, apiType.MarshalAs, caller);
returnValueType = GenerateCSharpNativeToManaged(buildData, apiType.MarshalAs, caller, true);
else
returnValueType = GenerateCSharpNativeToManaged(buildData, functionInfo.ReturnType, caller);
returnValueType = GenerateCSharpNativeToManaged(buildData, functionInfo.ReturnType, caller, true);
}
#if USE_NETCORE
@@ -594,7 +619,7 @@ namespace Flax.Build.Bindings
contents.Append(", ");
separator = true;
var nativeType = GenerateCSharpManagedToNativeType(buildData, parameterInfo.Type, caller);
var nativeType = GenerateCSharpManagedToNativeType(buildData, parameterInfo.Type, caller, true);
#if USE_NETCORE
string parameterMarshalType = "";
if (nativeType == "System.Type")
@@ -643,7 +668,7 @@ namespace Flax.Build.Bindings
contents.Append(", ");
separator = true;
var nativeType = GenerateCSharpManagedToNativeType(buildData, parameterInfo.Type, caller);
var nativeType = GenerateCSharpManagedToNativeType(buildData, parameterInfo.Type, caller, true);
#if USE_NETCORE
string parameterMarshalType = "";
if (parameterInfo.IsOut && parameterInfo.DefaultValue == "var __resultAsRef")
@@ -756,7 +781,16 @@ namespace Flax.Build.Bindings
}
}
contents.Append(");");
contents.Append(')');
if ((functionInfo.ReturnType.Type == "Array" || functionInfo.ReturnType.Type == "Span" || functionInfo.ReturnType.Type == "DataContainer") && functionInfo.ReturnType.GenericArgs != null)
{
// Convert array that uses different type for marshalling
var arrayTypeInfo = functionInfo.ReturnType.GenericArgs[0];
var arrayApiType = FindApiTypeInfo(buildData, arrayTypeInfo, caller);
if (arrayApiType != null && arrayApiType.MarshalAs != null)
contents.Append($".ConvertArray(x => ({GenerateCSharpNativeToManaged(buildData, arrayTypeInfo, caller)})x)");
}
contents.Append(';');
// Return result
if (functionInfo.Glue.UseReferenceForResult)