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authorLibravatar kim <grufwub@gmail.com>2025-08-21 16:41:50 +0200
committerLibravatar kim <gruf@noreply.codeberg.org>2025-08-21 16:41:50 +0200
commita79f83cbded3fb1165b338ce316dc9f2217467ff (patch)
tree4b4a2b7084aced51c0a691cee6352b4ecae90df8 /vendor/codeberg.org/gruf/go-mangler/v2/method.go
parent[chore] bump golangci-lint version in CI, disable var-naming package name che... (diff)
downloadgotosocial-a79f83cbded3fb1165b338ce316dc9f2217467ff.tar.xz
[chore] update dependencies (#4386)
- codeberg.org/gruf/go-bytesize v1.0.3 -> v1.0.4 - codeberg.org/gruf/go-kv/v2 v2.0.6 -> v2.0.7 - codeberg.org/gruf/go-mutexes v1.5.2 -> v1.5.3 - codeberg.org/gruf/go-structr v0.9.7 -> v0.9.8 - codeberg.org/gruf/go-ffmpreg v0.6.8 -> v0.6.9 - github.com/tomnomnom/linkheader HEAD@2018 -> HEAD@2025 all of the above codeberg.org/gruf updates are in preparation for Go1.25, except for bytesize, and also ffmpreg which is a rebuild with the latest version of ffmpeg (v5.1.7) Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4386 Co-authored-by: kim <grufwub@gmail.com> Co-committed-by: kim <grufwub@gmail.com>
Diffstat (limited to 'vendor/codeberg.org/gruf/go-mangler/v2/method.go')
-rw-r--r--vendor/codeberg.org/gruf/go-mangler/v2/method.go105
1 files changed, 105 insertions, 0 deletions
diff --git a/vendor/codeberg.org/gruf/go-mangler/v2/method.go b/vendor/codeberg.org/gruf/go-mangler/v2/method.go
new file mode 100644
index 000000000..7a938d6ae
--- /dev/null
+++ b/vendor/codeberg.org/gruf/go-mangler/v2/method.go
@@ -0,0 +1,105 @@
+package mangler
+
+import (
+ "reflect"
+ "unsafe"
+
+ "codeberg.org/gruf/go-xunsafe"
+)
+
+var (
+ // mangleable type for implement checks.
+ mangleableType = reflect.TypeFor[Mangleable]()
+)
+
+type Mangleable interface {
+ Mangle(dst []byte) []byte
+}
+
+// getMethodType returns a *possible* Mangler to handle case
+// of a type that implements any known interface{} types, else nil.
+func getMethodType(t xunsafe.TypeIter) Mangler {
+ switch {
+ case t.Type.Implements(mangleableType):
+ switch t.Type.Kind() {
+ case reflect.Interface:
+ return getInterfaceMangleableType(t)
+ default:
+ return getConcreteMangleableType(t)
+ }
+ default:
+ return nil
+ }
+}
+
+// getInterfaceMangleableType returns a Mangler to handle case of an interface{}
+// type that implements Mangleable{}, i.e. Mangleable{} itself and any superset of.
+func getInterfaceMangleableType(t xunsafe.TypeIter) Mangler {
+ switch t.Indirect() && !t.IfaceIndir() {
+ case true:
+ return func(buf []byte, ptr unsafe.Pointer) []byte {
+ ptr = *(*unsafe.Pointer)(ptr)
+ if ptr == nil || (*xunsafe.Abi_NonEmptyInterface)(ptr).Data == nil {
+ buf = append(buf, '0')
+ return buf
+ }
+ v := *(*Mangleable)(ptr)
+ buf = append(buf, '1')
+ buf = v.Mangle(buf)
+ return buf
+ }
+ case false:
+ return func(buf []byte, ptr unsafe.Pointer) []byte {
+ if ptr == nil || (*xunsafe.Abi_NonEmptyInterface)(ptr).Data == nil {
+ buf = append(buf, '0')
+ return buf
+ }
+ v := *(*Mangleable)(ptr)
+ buf = append(buf, '1')
+ buf = v.Mangle(buf)
+ return buf
+ }
+ default:
+ panic("unreachable")
+ }
+}
+
+// getConcreteMangleableType returns a Manlger to handle case of concrete
+// (i.e. non-interface{}) type that has a Mangleable{} method receiver.
+func getConcreteMangleableType(t xunsafe.TypeIter) Mangler {
+ itab := xunsafe.GetIfaceITab[Mangleable](t.Type)
+ switch {
+ case t.Indirect() && !t.IfaceIndir():
+ return func(buf []byte, ptr unsafe.Pointer) []byte {
+ ptr = *(*unsafe.Pointer)(ptr)
+ if ptr == nil {
+ buf = append(buf, '0')
+ return buf
+ }
+ v := *(*Mangleable)(xunsafe.PackIface(itab, ptr))
+ buf = append(buf, '1')
+ buf = v.Mangle(buf)
+ return buf
+ }
+ case t.Type.Kind() == reflect.Pointer && t.Type.Implements(mangleableType):
+ // if the interface implementation is received by
+ // value type, the pointer type will also support
+ // it but it requires an extra dereference check.
+ return func(buf []byte, ptr unsafe.Pointer) []byte {
+ if ptr == nil {
+ buf = append(buf, '0')
+ return buf
+ }
+ v := *(*Mangleable)(xunsafe.PackIface(itab, ptr))
+ buf = append(buf, '1')
+ buf = v.Mangle(buf)
+ return buf
+ }
+ default:
+ return func(buf []byte, ptr unsafe.Pointer) []byte {
+ v := *(*Mangleable)(xunsafe.PackIface(itab, ptr))
+ buf = v.Mangle(buf)
+ return buf
+ }
+ }
+}