tree b446730a5606335c68ab5c0a98b08032b042f177
parent 45f20876fcd73d9671d0ccacfce5c573ba28e893
author Alan Donovan <adonovan@google.com> 1539896401 -0400
committer Alan Donovan <adonovan@google.com> 1539970992 +0000

go/analysis/internal/analysisflags: common flag handling

The analysisflags package provides a function to help
ensure that all drivers support consistent command-line
interfaces.  In particular, -analyzer.enable flags use
tristate logic as in vet, and the -flags flag dumps
a list of flags in JSON for use by 'go vet' and other
build systems.

This code is in a separate package from internal/checker
(the common parts of multichecker, singlechecker)
because we don't want the forthcoming vet-lite (formerly
known as doctor) driver to have an unnecessary dependency
on go/packages.  (When go/packages is promoted to the
standard library we can consolidate them.)

+ Test of tristate analyzer selection logic.

Change-Id: I5ea4e556e0f56505df06eb8fa9dd9eed884a1b47
Reviewed-on: https://go-review.googlesource.com/c/143197
Reviewed-by: Michael Matloob <matloob@golang.org>