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int.go
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int.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 coderx
import (
"encoding/binary"
"github.com/apache/beam/sdks/go/pkg/beam/core/graph/coder"
"github.com/apache/beam/sdks/go/pkg/beam/core/util/reflectx"
)
// Fixed-sized custom coders for integers.
var (
Uint32 *coder.CustomCoder
Int32 *coder.CustomCoder
Uint64 *coder.CustomCoder
Int64 *coder.CustomCoder
)
func init() {
var err error
Uint32, err = coder.NewCustomCoder("uint32", reflectx.Uint32, encUint32, decUint32)
if err != nil {
panic(err)
}
Int32, err = coder.NewCustomCoder("int32", reflectx.Int32, encInt32, decInt32)
if err != nil {
panic(err)
}
Uint64, err = coder.NewCustomCoder("uint64", reflectx.Uint64, encUint64, decUint64)
if err != nil {
panic(err)
}
Int64, err = coder.NewCustomCoder("int64", reflectx.Int64, encInt64, decInt64)
if err != nil {
panic(err)
}
}
func encUint32(v uint32) []byte {
ret := make([]byte, 4)
binary.BigEndian.PutUint32(ret, v)
return ret
}
func decUint32(data []byte) uint32 {
return binary.BigEndian.Uint32(data)
}
func encInt32(v int32) []byte {
return encUint32(uint32(v))
}
func decInt32(data []byte) int32 {
return int32(decUint32(data))
}
func encUint64(v uint64) []byte {
ret := make([]byte, 8)
binary.BigEndian.PutUint64(ret, v)
return ret
}
func decUint64(data []byte) uint64 {
return binary.BigEndian.Uint64(data)
}
func encInt64(v int64) []byte {
return encUint64(uint64(v))
}
func decInt64(data []byte) int64 {
return int64(decUint64(data))
}