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Diffstat (limited to 'vendor/golang.org/x/tools/internal/versions/features.go')
-rw-r--r-- | vendor/golang.org/x/tools/internal/versions/features.go | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/vendor/golang.org/x/tools/internal/versions/features.go b/vendor/golang.org/x/tools/internal/versions/features.go new file mode 100644 index 0000000..b53f178 --- /dev/null +++ b/vendor/golang.org/x/tools/internal/versions/features.go @@ -0,0 +1,43 @@ +// 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. + +package versions + +// This file contains predicates for working with file versions to +// decide when a tool should consider a language feature enabled. + +// GoVersions that features in x/tools can be gated to. +const ( + Go1_18 = "go1.18" + Go1_19 = "go1.19" + Go1_20 = "go1.20" + Go1_21 = "go1.21" + Go1_22 = "go1.22" +) + +// Future is an invalid unknown Go version sometime in the future. +// Do not use directly with Compare. +const Future = "" + +// AtLeast reports whether the file version v comes after a Go release. +// +// Use this predicate to enable a behavior once a certain Go release +// has happened (and stays enabled in the future). +func AtLeast(v, release string) bool { + if v == Future { + return true // an unknown future version is always after y. + } + return Compare(Lang(v), Lang(release)) >= 0 +} + +// Before reports whether the file version v is strictly before a Go release. +// +// Use this predicate to disable a behavior once a certain Go release +// has happened (and stays enabled in the future). +func Before(v, release string) bool { + if v == Future { + return false // an unknown future version happens after y. + } + return Compare(Lang(v), Lang(release)) < 0 +} |