diff options
Diffstat (limited to 'vendor/codeberg.org/gruf/go-structr/runtime.go')
| -rw-r--r-- | vendor/codeberg.org/gruf/go-structr/runtime.go | 45 |
1 files changed, 34 insertions, 11 deletions
diff --git a/vendor/codeberg.org/gruf/go-structr/runtime.go b/vendor/codeberg.org/gruf/go-structr/runtime.go index c1a883462..8a8d53ede 100644 --- a/vendor/codeberg.org/gruf/go-structr/runtime.go +++ b/vendor/codeberg.org/gruf/go-structr/runtime.go @@ -18,7 +18,8 @@ import ( // including memory offset and hash function. type struct_field struct { - // mangle ... + // struct field type mangling + // (i.e. fast serializing) fn. mangle mangler.Mangler // zero value data, used when @@ -81,6 +82,10 @@ func find_field(t xunsafe.TypeIter, names []string) (sfield struct_field, ftype field reflect.StructField ) + // Take reference + // of parent iter. + o := t + for len(names) > 0 { // Pop next name. name := pop_name() @@ -140,23 +145,41 @@ func find_field(t xunsafe.TypeIter, names []string) (sfield struct_field, ftype // Get mangler from type info. sfield.mangle = mangler.Get(t) - // Get field type as zero interface. - v := reflect.New(t.Type).Elem() - vi := v.Interface() - - // Get argument mangler from iface. - ti := xunsafe.TypeIterFrom(vi) - mangleArg := mangler.Get(ti) - // Calculate zero value string. - zptr := xunsafe.UnpackEface(vi) - zstr := string(mangleArg(nil, zptr)) + zptr := zero_value_field(o, sfield.offsets) + zstr := string(sfield.mangle(nil, zptr)) sfield.zerostr = zstr sfield.zero = zptr return } +// zero_value ... +func zero_value(t xunsafe.TypeIter, offsets []next_offset) reflect.Value { + v := reflect.New(t.Type).Elem() + for _, offset := range offsets { + for range offset.derefs { + if v.IsNil() { + new := reflect.New(v.Type().Elem()) + v.Set(new) + } + v = v.Elem() + } + for i := 0; i < v.NumField(); i++ { + if v.Type().Field(i).Offset == offset.offset { + v = v.Field(i) + break + } + } + } + return v +} + +// zero_value_field ... +func zero_value_field(t xunsafe.TypeIter, offsets []next_offset) unsafe.Pointer { + return zero_value(t, offsets).Addr().UnsafePointer() +} + // extract_fields extracts given structfields from the provided value type, // this is done using predetermined struct field memory offset locations. func extract_fields(ptr unsafe.Pointer, fields []struct_field) []unsafe.Pointer { |