tree 2225b20095920a56f4ad2fefa84d145fb3e33126
parent 1fdeb1692e0bf54f07926710b72fe30e350c946f
author Alan Donovan <adonovan@google.com> 1542296025 -0500
committer Alan Donovan <adonovan@google.com> 1542297622 +0000

go/analysis/unitchecker: a main function for vet-lite tools

(By "vet lite", we mean static tools that must be invoked by a build
system, such as 'go vet'.)

This CL publishes the former internal/unitchecker package.
Its misnamed Main function is renamed Run, and it has a new Main
that does the steps of a real main (log, flag, etc).

The motivation for this change is to reduce cmd/vet-lite to the point
of triviality to simplify the maintenance of the vendored copy of
x/tools in GOROOT, because GOROOT/src/cmd/vet will need a copy of that
logic. It is now essentially a one-liner.

Also, improve usage messages; analysisflags.PrintUsage wasn't
appropriate for all callers so it has been eliminated.
Each of {single,multi,unit}checker prints its own 1-line usage message.

Change-Id: I214c0e4ae7a2923eee8df3f7548341f2320cad2b
Reviewed-on: https://go-review.googlesource.com/c/149742
Reviewed-by: Michael Matloob <matloob@golang.org>