There is a discrepancy between how clangd processes CDB loaded from
JSON file on disk and pushed via LSP. Thus the same CDB pushed via
LSP protocol may not work as expected. Some difference between these two
paths is expected but we still need to insert driver mode and target from
binary name and expand response files.
Test Plan: check-clang-tools
Differential Revision: https://reviews.llvm.org/D143436
Tests that need ASTs have to deal with the awkward control flow of
FrontendAction in some way. There are a few idioms used:
- don't bother with unit tests, use clang -dump-ast
- create an ASTConsumer by hand, which is bulky
- use ASTMatchFinder - works pretty well if matchers are actually
needed, very strange if they are not
- use ASTUnit - this yields nice straight-line code, but ASTUnit is a
terrifically complicated library not designed for this purpose
TestAST provides a very simple way to write straight-line tests: specify
the code/flags and it provides an AST that is kept alive until the
object is destroyed.
It's loosely modeled after TestTU in clangd, which we've successfully
used for a variety of tests.
I've updated a couple of clang tests to use this helper, IMO they're clearer.
Differential Revision: https://reviews.llvm.org/D123668
Summary:
The unittest for AST matchers has its own way to specify language
standards. I unified it with the shared infrastructure from
libClangTesting.
Reviewers: jdoerfert, hlopko
Reviewed By: hlopko
Subscribers: mgorny, sstefan1, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D81150
Summary:
I think we would be better off with tests explicitly specifying the
language mode. Right now Lang_C means C99, but reads as "any C version",
or as "unspecified C version".
I also changed '-std=c++98' to '-std=c++03' because they are aliases (so
there is no difference in practice), because Clang implements C++03
rules in practice, and because 03 makes a nice sortable progression
between 03, 11, 14, 17, 20.
Reviewers: shafik, hlopko
Reviewed By: hlopko
Subscribers: jfb, martong, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D81000
Summary:
unittests/AST/Language.h defines some helpers that we would like to
reuse in other tests, for example, in tests for syntax trees.
Reviewers: sammccall
Reviewed By: sammccall
Subscribers: mgorny, martong, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D80792
