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Fix using Function in scripting api to pass function pointer to native code when running in dotnet7

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This commit is contained in:
Wojciech Figat
2022-12-22 11:50:29 +01:00
parent 3f172442be
commit 75130fcca3
1 changed files with 46 additions and 3 deletions
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49
Source/Tools/Flax.Build/Bindings/BindingsGenerator.CSharp.cs
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@@ -15,6 +15,8 @@ namespace Flax.Build.Bindings
{
private static readonly HashSet<string> CSharpUsedNamespaces = new HashSet<string>();
private static readonly List<string> CSharpUsedNamespacesSorted = new List<string>();
private static readonly List<string> CSharpAdditionalCode = new List<string>();
private static readonly Dictionary<string, string> CSharpAdditionalCodeCache = new Dictionary<string, string>();
public static event Action<BuildData, ApiTypeInfo, StringBuilder, string> GenerateCSharpTypeInternals;
@@ -310,6 +312,33 @@ namespace Flax.Build.Bindings
{
if (typeInfo.GenericArgs.Count == 0)
throw new Exception("Missing function return type.");
#if USE_NETCORE
// NetCore doesn't allow using Marshal.GetDelegateForFunctionPointer on generic delegate type (eg. Action<int>) thus generate explicit delegate type for function parameter
// https://github.com/dotnet/runtime/issues/36110
if (typeInfo.GenericArgs.Count == 1 && typeInfo.GenericArgs[0].Type == "void")
return "Action";
// 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);
if (!CSharpAdditionalCodeCache.TryGetValue(key, out var delegateName))
{
delegateName = "Delegate" + CSharpAdditionalCodeCache.Count;
var signature = $"public delegate {GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller)} {delegateName}(";
for (int i = 1; i < typeInfo.GenericArgs.Count; i++)
{
if (i != 1)
signature += ", ";
signature += GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[i], caller);
signature += $" arg{(i - 1)}";
}
signature += ");";
CSharpAdditionalCode.Add("/// <summary>Function delegate.</summary>");
CSharpAdditionalCode.Add(signature);
CSharpAdditionalCodeCache.Add(key, delegateName);
}
return delegateName;
#else
if (typeInfo.GenericArgs.Count > 1)
{
var args = string.Empty;
@@ -323,6 +352,7 @@ namespace Flax.Build.Bindings
if (typeInfo.GenericArgs[0].Type == "void")
return "Action";
return string.Format("Func<{0}>", GenerateCSharpNativeToManaged(buildData, typeInfo.GenericArgs[0], caller));
#endif
}
// Find API type info
@@ -422,6 +452,19 @@ namespace Flax.Build.Bindings
return string.Empty;
}
}
private static void GenerateCSharpManagedTypeInternals(BuildData buildData, ApiTypeInfo apiTypeInfo, StringBuilder contents, string indent)
{
if (CSharpAdditionalCode.Count != 0)
{
contents.AppendLine();
foreach(var e in CSharpAdditionalCode)
contents.Append(indent).AppendLine(e);
CSharpAdditionalCode.Clear();
CSharpAdditionalCodeCache.Clear();
}
GenerateCSharpTypeInternals?.Invoke(buildData, apiTypeInfo, contents, indent);
}
private static void GenerateCSharpWrapperFunction(BuildData buildData, StringBuilder contents, string indent, ApiTypeInfo caller, FunctionInfo functionInfo)
{
@@ -1180,7 +1223,7 @@ namespace Flax.Build.Bindings
}
}
GenerateCSharpTypeInternals?.Invoke(buildData, classInfo, contents, indent);
GenerateCSharpManagedTypeInternals(buildData, classInfo, contents, indent);
// Nested types
foreach (var apiTypeInfo in classInfo.Children)
@@ -1723,7 +1766,7 @@ namespace Flax.Build.Bindings
contents.Append(indent).AppendLine("}");
}
GenerateCSharpTypeInternals?.Invoke(buildData, structureInfo, contents, indent);
GenerateCSharpManagedTypeInternals(buildData, structureInfo, contents, indent);
// Nested types
foreach (var apiTypeInfo in structureInfo.Children)
@@ -1856,7 +1899,7 @@ namespace Flax.Build.Bindings
contents.Append(");").AppendLine();
}
GenerateCSharpTypeInternals?.Invoke(buildData, interfaceInfo, contents, indent);
GenerateCSharpManagedTypeInternals(buildData, interfaceInfo, contents, indent);
// End
indent = indent.Substring(0, indent.Length - 4);