tree 566621abbd1abe8c384fbe9dcc3c1d6ff619cf5c
parent 7b6c293f9caee4046f27935fdb2bf05a9388aba9
author Hyrum Wright <hwright@google.com> 1544729032 +0000
committer Hyrum Wright <hwright@google.com> 1544729032 +0000

[clang-tidy] Add the abseil-duration-subtraction check

Summary:
This check uses the context of a subtraction expression as well as knowledge
about the Abseil Time types, to infer the type of the second operand of some
subtraction expressions in Duration conversions. For example:

   absl::ToDoubleSeconds(duration) - foo

can become
   absl::ToDoubleSeconds(duration - absl::Seconds(foo))

This ensures that time calculations are done in the proper domain, and also
makes it easier to further deduce the types of the second operands to these
expressions.

Reviewed By: JonasToth

Tags: #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D55245

git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@349073 91177308-0d34-0410-b5e6-96231b3b80d8