Fix missing async functions regression

gir/cmd/gir-generate/gendata/gendata.go

@@ -4,6 +4,7 @@ package gendata
 
 import (
  "fmt"
+ "slices"
  "strings"
 
  "github.com/diamondburned/gotk4/gir"
@@ -12,6 +13,7 @@ import (
  "github.com/diamondburned/gotk4/gir/girgen/file"
  . "github.com/diamondburned/gotk4/gir/girgen/types"
  . "github.com/diamondburned/gotk4/gir/girgen/types/typeconv"
+ "github.com/diamondburned/gotk4/gir/internal/ptr"
 )
 
 const Module = "github.com/diamondburned/gotk4/pkg"
@@ -211,6 +213,20 @@ var Preprocessors = []Preprocessor{
  }
  }
  }),
+
+ // Fix GAsyncReadyCallback missing the closure bit for the user_data
+ // parameter.
+ PreprocessorFunc(func(repos gir.Repositories) {
+ callback := repos.FindFullType("Gio-2.AsyncReadyCallback").Type.(*gir.Callback)
+
+ userDataIx := slices.IndexFunc(
+ callback.Parameters.Parameters,
+ func(p gir.Parameter) bool { return p.Name == "data" },
+ )
+
+ userData := &callback.Parameters.Parameters[userDataIx]
+ userData.Closure = ptr.To(userDataIx)
+ }),
 }
 
 var ConversionProcessors = []ConversionProcessor{

gir/internal/ptr/ptr.go

@@ -0,0 +1,6 @@
+package ptr
+
+// To returns a pointer to the given value.
+func To[T any](v T) *T {
+ return &v
+}