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Towards callbacks.

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Nuno Cruces
2024-01-26 15:41:36 +00:00
parent 88cf845651
commit 019c71fb55
13 changed files with 111 additions and 27 deletions
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11
vtab.go
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@@ -128,6 +128,13 @@ type VTabConstructor[T VTab] func(db *Conn, module, schema, table string, arg ..
type module[T VTab] [2]VTabConstructor[T]
type vtabConstructor int
const (
xCreate vtabConstructor = 0
xConnect vtabConstructor = 1
)
// A VTab describes a particular instance of the virtual table.
// A VTab may optionally implement [io.Closer] to free resources.
//
@@ -414,7 +421,7 @@ const (
INDEX_SCAN_UNIQUE IndexScanFlag = 1
)
func vtabModuleCallback(i int) func(_ context.Context, _ api.Module, _, _, _, _, _ uint32) uint32 {
func vtabModuleCallback(i vtabConstructor) func(_ context.Context, _ api.Module, _, _, _, _, _ uint32) uint32 {
return func(ctx context.Context, mod api.Module, pMod, nArg, pArg, ppVTab, pzErr uint32) uint32 {
arg := make([]reflect.Value, 1+nArg)
arg[0] = reflect.ValueOf(ctx.Value(connKey{}))
@@ -425,7 +432,7 @@ func vtabModuleCallback(i int) func(_ context.Context, _ api.Module, _, _, _, _,
}
module := vtabGetHandle(ctx, mod, pMod)
res := reflect.ValueOf(module).Index(i).Call(arg)
res := reflect.ValueOf(module).Index(int(i)).Call(arg)
err, _ := res[1].Interface().(error)
if err == nil {
vtabPutHandle(ctx, mod, ppVTab, res[0].Interface())