/
bool.go
73 lines (60 loc) · 1.64 KB
/
bool.go
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// Copyright 2021 FerretDB Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package oldbson
import (
"bufio"
"github.com/FerretDB/FerretDB/internal/util/lazyerrors"
)
// boolType represents BSON Boolean type.
type boolType bool
func (b *boolType) bsontype() {}
// ReadFrom implements bsontype interface.
func (b *boolType) ReadFrom(r *bufio.Reader) error {
v, err := r.ReadByte()
if err != nil {
return lazyerrors.Errorf("bson.Bool.ReadFrom: %w", err)
}
switch v {
case 0:
*b = false
case 1:
*b = true
default:
return lazyerrors.Errorf("bson.Bool.ReadFrom: unexpected byte %#02x", v)
}
return nil
}
// WriteTo implements bsontype interface.
func (b boolType) WriteTo(w *bufio.Writer) error {
v, err := b.MarshalBinary()
if err != nil {
return lazyerrors.Errorf("bson.Bool.WriteTo: %w", err)
}
_, err = w.Write(v)
if err != nil {
return lazyerrors.Errorf("bson.Bool.WriteTo: %w", err)
}
return nil
}
// MarshalBinary implements bsontype interface.
func (b boolType) MarshalBinary() ([]byte, error) {
if b {
return []byte{1}, nil
}
return []byte{0}, nil
}
// check interfaces
var (
_ bsontype = (*boolType)(nil)
)