On Tuesday, February 14, 2017 at 3:25:05 AM UTC+11, Ehsan Akhgari wrote: > On 2017-02-11 3:27 AM, ISHIKAWA,chiaki wrote: > > On 2017/02/11 7:07, Botond Ballo wrote: > >> On Fri, Feb 10, 2017 at 3:45 PM, Milan Sreckovic > >> <msrec...@mozilla.com> wrote: > >>> First step needs to happen completely before the second step does, so I > >>> guess the danger is that we start and give up before we get to step > >>> 2. I > >>> don't think that will happen, but it is something we should always think > >>> about. > >> > >> It may be possible to automate most if not all of step 1 using an > >> automated refactoring based on clang's AST matchers (the same thing > >> our static analyses are based on). Then we could do step 1 all at > >> once, and even do before/after performance comparisons before > >> committing to it. Worth exploring, I think. > >> > > > > Is there any document about the AST matchers, especially about the > > analyzer that does "static analyses" for mozilla code? > > > > For example, I found the following URL: > > https://clang.llvm.org/docs/LibASTMatchersTutorial.html > > This reference documents all of the built-in matchers: > <http://clang.llvm.org/docs/LibASTMatchersReference.html>. The page > above is a good place to start. I also have a blog post that explains > how to create a simple static analysis check where I talk about AST > matchers among other things: > <https://ehsanakhgari.org/blog/2015-12-07/c-static-analysis-using-clang>. > There are other good blog posts and code samples to be found by doing a > web/github search. > > Cheers, > Ehsan
And clang-query is your best friend! It saved me days of debugging-by-Try for my second matcher. :-) More info there: http://eli.thegreenplace.net/2014/07/29/ast-matchers-and-clang-refactoring-tools Also http://gcc.godbolt.org/ using clang with compiler option: '-Xclang -ast-dump', to quickly work out how some code translates to ASTs. Cheers, Gerald _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
