tree 1ad5f5de274c14b340c0bbc2ec2af7b4ef770532
parent 144b786814f203ed2f2f9a4edfc30cefc5d8dd7c
author Serge Bazanski <serge@monogon.tech> 1639758736 +0100
committer Sergiusz Bazanski <serge@monogon.tech> 1640017890 +0000

build/analysis/importsort: init

This adds an analyzer which enforces import sorting as per
CODING_STANDARDS.md. It is not yet enabled in nogo.

This effectively duplicates some logic that is present in goimports.
However, that logic is mostly within an 'internal' package in x/tools,
and would be somewhat tricky to make work within the framework of an
analysis.Analyser (as it expects to also mutate a file). Thus, we
end up writing the analysis logic ourselves. Tests are provided to make
sure this logic doesn't rot away.

We also move some common logic from 'noioutil' to a new 'lib' package,
and implement the last piece of the puzzle there: a code generator to
provide information about the toolchain's stdlib as a map/set.

Change-Id: Ia0f32d6f9122e13117d18ae781d8255c6e3a887d
Reviewed-on: https://review.monogon.dev/c/monogon/+/494
Reviewed-by: Leopold Schabel <leo@nexantic.com>