diff options
Diffstat (limited to 'vendor/codeberg.org/gruf/go-mangler/v2/method.go')
| -rw-r--r-- | vendor/codeberg.org/gruf/go-mangler/v2/method.go | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/vendor/codeberg.org/gruf/go-mangler/v2/method.go b/vendor/codeberg.org/gruf/go-mangler/v2/method.go deleted file mode 100644 index 7a938d6ae..000000000 --- a/vendor/codeberg.org/gruf/go-mangler/v2/method.go +++ /dev/null @@ -1,105 +0,0 @@ -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 - } - } -} |
