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// Copyright 2023 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.
//go:build !go1.22
// +build !go1.22
package versions
import (
"go/ast"
"go/types"
)
// FileVersion returns a language version (<=1.21) derived from runtime.Version()
// or an unknown future version.
func FileVersion(info *types.Info, file *ast.File) string {
// In x/tools built with Go <= 1.21, we do not have Info.FileVersions
// available. We use a go version derived from the toolchain used to
// compile the tool by default.
// This will be <= go1.21. We take this as the maximum version that
// this tool can support.
//
// There are no features currently in x/tools that need to tell fine grained
// differences for versions <1.22.
return toolchain
}
// InitFileVersions is a noop when compiled with this Go version.
func InitFileVersions(*types.Info) {}