Copyright 2019 The Go Authors. All rights reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

package protoimpl

import (
	
)
MaxVersion is the maximum supported version for generated .pb.go files. It is always the current version of the module.
	MaxVersion = version.Minor
GenVersion is the runtime version required by generated .pb.go files. This is incremented when generated code relies on new functionality in the runtime.
	GenVersion = 20
MinVersion is the minimum supported version for generated .pb.go files. This is incremented when the runtime drops support for old code.
	MinVersion = 0
)
EnforceVersion is used by code generated by protoc-gen-go to statically enforce minimum and maximum versions of this package. A compilation failure implies either that: * the runtime package is too old and needs to be updated OR * the generated code is too old and needs to be regenerated. The runtime package can be upgraded by running: go get google.golang.org/protobuf The generated code can be regenerated by running: protoc --go_out=${PROTOC_GEN_GO_ARGS} ${PROTO_FILES} Example usage by generated code: const ( // Verify that this generated code is sufficiently up-to-date. _ = protoimpl.EnforceVersion(genVersion - protoimpl.MinVersion) // Verify that runtime/protoimpl is sufficiently up-to-date. _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - genVersion) ) The genVersion is the current minor version used to generated the code. This compile-time check relies on negative integer overflow of a uint being a compilation failure (guaranteed by the Go specification).
type EnforceVersion uint
This enforces the following invariant: MinVersion ≤ GenVersion ≤ MaxVersion
const (
	_ = EnforceVersion(GenVersion - MinVersion)
	_ = EnforceVersion(MaxVersion - GenVersion)