Inside a switch the caseStmt() and defaultStmt() have a nested statement
associated with them. Similarly, labelStmt() has a nested statement.
These statements were being missed when looking for a compound-if of the
form "if (x) return true; return false;" when the if is nested under one
of these labelling constructs.
Enhance the matchers to look for these nested statements using some
private matcher hasSubstatement() traversal matcher on case, default
and label statements. Add the private matcher hasSubstatementSequence()
to match the compound "if (x) return true; return false;" pattern.
- Add unit tests for private matchers and corresponding test
infrastructure
- Add corresponding test file readability-simplify-bool-expr-case.cpp.
- Fix variable name copy/paste error in readability-simplify-bool-expr.cpp.
- Drop the asserts, which were used only for debugging matchers.
- Run clang-format on the whole check.
- Move local functions out of anonymous namespace and declare state, per
LLVM style guide
- Declare labels constexpr
- Declare visitor arguments as pointer to const
- Drop braces around simple control statements per LLVM style guide
- Prefer explicit arguments over default arguments to methods
Differential Revision: https://reviews.llvm.org/D56303Fixes#27078
Currently it's hidden inside ClangTidyDiagnosticConsumer,
so it's hard to know it exists.
Given that there are multiple uses of globs in clang-tidy,
it makes sense to have these classes publicly available
for other use cases that might benefit from it.
Also, add unit test by converting the existing tests
for GlobList into typed tests.
Reviewed By: salman-javed-nz
Differential Revision: https://reviews.llvm.org/D113422
Fixes https://bugs.llvm.org/show_bug.cgi?id=48613.
llvm-header-guard is suggesting header guards with leading underscores
if the header file path begins with a '/' or similar special character.
Only reserved identifiers should begin with an underscore.
Differential Revision: https://reviews.llvm.org/D114149
Invalid SourceRanges can occur generally if the code does not compile,
thus we expect clang error diagnostics.
Unlike `clang`, `clang-tidy` did not swallow invalid source ranges, but
tried to highlight them, and blow various assertions.
The following two examples produce invalid source ranges, but this is
not a complete list:
void test(x); // error: unknown type name 'x'
struct Foo {
member; // error: C++ requires a type specifier for all declarations
};
Thanks @whisperity helping me fix this.
Reviewed-By: xazax.hun
Differential Revision: https://reviews.llvm.org/D114254
Fixes pr40372 (https://bugs.llvm.org/show_bug.cgi?id=40372).
The llvm-header-guard check does not take into account that the path
separator on Windows is `\`, not `/`.
This means that instead of suggesting a header guard in the form of:
LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_FOO_H
it incorrectly suggests:
C:\LLVM_PROJECT\CLANG_TOOLS_EXTRA\CLANG_TIDY\FOO_H
Differential Revision: https://reviews.llvm.org/D113450
As described on D111049, we're trying to remove the <string> dependency from error handling and replace uses of report_fatal_error(const std::string&) with the Twine() variant which can be forward declared.
Without the fix we get:
06:31:09 In file included from ../../clang-tools-extra/unittests/clang-tidy/ClangTidyDiagnosticConsumerTest.cpp:3:
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1392:11: error: comparison of integers of different signs: 'const int' and 'const unsigned int' [-Werror,-Wsign-compare]
06:31:09 if (lhs == rhs) {
06:31:09 ~~~ ^ ~~~
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1421:12: note: in instantiation of function template specialization 'testing::internal::CmpHelperEQ<int, unsigned int>' requested here
06:31:09 return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
06:31:09 ^
06:31:09 ../../clang-tools-extra/unittests/clang-tidy/ClangTidyDiagnosticConsumerTest.cpp:60:3: note: in instantiation of function template specialization 'testing::internal::EqHelper<false>::Compare<int, unsigned int>' requested here
06:31:09 EXPECT_EQ(4, Errors[0].Message.FileOffset);
06:31:09 ^
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1924:63: note: expanded from macro 'EXPECT_EQ'
06:31:09 EqHelper<GTEST_IS_NULL_LITERAL_(val1)>::Compare, \
06:31:09 ^
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1392:11: error: comparison of integers of different signs: 'const int' and 'const unsigned long' [-Werror,-Wsign-compare]
06:31:09 if (lhs == rhs) {
06:31:09 ~~~ ^ ~~~
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1421:12: note: in instantiation of function template specialization 'testing::internal::CmpHelperEQ<int, unsigned long>' requested here
06:31:09 return CmpHelperEQ(lhs_expression, rhs_expression, lhs, rhs);
06:31:09 ^
06:31:09 ../../clang-tools-extra/unittests/clang-tidy/ClangTidyDiagnosticConsumerTest.cpp:64:3: note: in instantiation of function template specialization 'testing::internal::EqHelper<false>::Compare<int, unsigned long>' requested here
06:31:09 EXPECT_EQ(1, Errors[0].Message.Ranges.size());
06:31:09 ^
06:31:09 ../utils/unittest/googletest/include/gtest/gtest.h:1924:63: note: expanded from macro 'EXPECT_EQ'
06:31:09 EqHelper<GTEST_IS_NULL_LITERAL_(val1)>::Compare, \
06:31:09 ^
06:31:09 2 errors generated.
There was an off-by-one issue with calculating the *exact* end location
of token ranges (as given by SomeDecl->getSourceRange()) which resulted in:
xxx(something)
^~~~~~~~ // Note the missing ~ under the last character.
In addition, a test is added to keep the behaviour in check in the future.
This patch hotfixes commit 3b677b81ce.
Fixes bug http://bugs.llvm.org/show_bug.cgi?id=49000.
This patch allows Clang-Tidy checks to do
diag(X->getLocation(), "text") << Y->getSourceRange();
and get the highlight of `Y` as expected:
warning: text [blah-blah]
xxx(something)
^ ~~~~~~~~~
Reviewed-By: aaron.ballman, njames93
Differential Revision: http://reviews.llvm.org/D98635
The interface served a purpose, but since the ability to emit diagnostics when parsing configuration was added, its become mostly redundant. Emitting the diagnostic and removing the boilerplate is much cleaner.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D97614
LLVMTestingSupport is not part of libLLVM, and therefore can not
be linked to via LLVM_LINK_COMPONENTS. Instead, it needs to be
specified explicitly to ensure that it is linked explicitly
even if LLVM_LINK_LLVM_DYLIB is used. This is consistent with handling
in clangd.
Fixes PR#48931
Differential Revision: https://reviews.llvm.org/D95653
Currently errors detected when parsing the YAML for .clang-tidy files are always printed to errs.
For clang-tidy binary workflows this usually isn't an issue, but using clang-tidy as a library for integrations may want to handle displaying those errors in their own specific way.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D92920
Using a MemoryBufferRef, If there is an error parsing, we can point the user to the location of the file.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D93024
Add methods for emitting diagnostics with no location as well as a special diagnostic for configuration errors.
These show up in the errors as [clang-tidy-config].
The reason to use a custom name rather than the check name is to distinguish the error isn't the same category as the check that reported it.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D91885
A number of declarations were leftover after the move from `clang::tooling` to
`clang::transformer`. This patch removes those declarations and upgrades the
handful of references to the deprecated declarations.
Differential Revision: https://reviews.llvm.org/D92340
Currently, `node` only includes the semicolon for (some) statements. However,
declarations have the same issue of (potentially) trailing semicolons, so `node`
should behave the same for them.
Differential Revision: https://reviews.llvm.org/D91872
Changed `ClangTidyOptions::mergeWith` to operate on the instance instead of returning a copy. The old mergeWith method has been renamed to merge and marked as nodiscard, to aid in disambiguating which one is which.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D91184
The config providers that look for configuration files currently take a pointer to a FileSystem in the constructor.
For some reason this isn't actually used when trying to read those configuration files, Essentially it just follows the behaviour of the real filesystem.
Using clang-tidy standalone this doesn't cause any issue.
But if its used as a library and the user wishes to use say an `InMemoryFileSystem` it will try to read the files from the disc instead.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D90992
Currently, this would not correctly associate a category with the related include if it was top-level (i.e. no slashes in the path). This ensures that we explicitly think about that case.
Reviewed By: gribozavr2
Differential Revision: https://reviews.llvm.org/D89608
Update IncludeSorter/IncludeInserter to support objective-c google style (part 1):
1) Correctly consider .mm/.m extensions
2) Correctly categorize category headers.
3) Add support for generated files to go in a separate section of imports
Reviewed By: alexfh, gribozavr2
Patch by Joe Turner.
Differential Revision: https://reviews.llvm.org/D89276
Both tests define clang::tidy::test::TestCheck::registerMatchers().
This is UB and causes linker to sometimes choose the wrong overload.
Put classes into anonymous namespaces to avoid the problem.
Differential Revision: https://reviews.llvm.org/D84902
Simplified how `IncludeInserter` is used in Checks by abstracting away the SourceManager and PPCallbacks inside the method `registerPreprocessor`.
Changed checks that use `IncludeInserter` to no longer use a `std::unique_ptr`, instead the IncludeInserter is just a member of the class thats initialized with an `IncludeStyle`.
Saving an unnecessary allocation.
This results in the removal of the field `IncludeSorter::IncludeStyle` from the checks, as its wrapped in the `IncludeInserter`.
No longer need to create an instance of the `IncludeInserter` in the registerPPCallbacks, now that method only needs to contain:
```
Inserter.registerPreprocessor(PP);
```
Also added a helper method to `IncludeInserter` called `createMainFileInclusionInsertion`, purely sugar but does better express intentions.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D83680
Reland b9306fd after fixing the issue causing mac builds to fail unittests.
Following on from D77085, I was never happy with the passing a mapping to the option get/store functions. This patch addresses this by using explicit specializations to handle the serializing and deserializing of enum options.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D82188
Motivated by a suspicously failing build, but also good to have anyway in general.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D82815
Added some sanity checks to figure out the cause of a (seemingly unrelated) test failure on mac.
These can be removed should no issues arise on that platform again.
Following on from D77085, I was never happy with the passing a mapping to the option get/store functions. This patch addresses this by using explicit specializations to handle the serializing and deserializing of enum options.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D82188
This patch adds `--use-color` command line option and `UseColor` option to clang-tidy to control colors in diagnostics. With these options, users can force colorful output. This is useful when using clang-tidy with parallelization command line tools (like ninja and GNU parallel), as they often pipe clang-tidy's standard output and make the colors disappear.
Reviewed By: njames93
Differential Revision: https://reviews.llvm.org/D79477
Summary:
The new option allows the user to specify which file naming convention is used
by the source code ('llvm' or 'google').
Reviewers: gribozavr2
Subscribers: xazax.hun, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D79380
Summary:
Without this patch clang-tidy stops finding file configs on the nearest
.clang-tidy file. In some cases it is not very convenient because it
results in common parts duplication into every child .clang-tidy file.
This diff adds optional config inheritance from the parent directories
config files.
Test Plan:
Added test cases in existing config test.
Reviewers: alexfh, gribozavr2, klimek, hokein
Subscribers: njames93, arphaman, xazax.hun, aheejin, cfe-commits
Tags: #clang, #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D75184
This reverts commit 97aa593a83 as it
causes problems (PR45453) https://reviews.llvm.org/D77574#1966321.
This additionally adds an explicit reference to FrontendOpenMP to
clang-tidy where ASTMatchers is used.
This is hopefully just a temporary solution. The dependence on
`FrontendOpenMP` from `ASTMatchers` should be handled by CMake
implicitly, not us explicitly.
Reviewed By: aheejin
Differential Revision: https://reviews.llvm.org/D77666
Summary:
Adds support for `ClangTidyCheck::OptionsView` to deteremine:
- If an option is found in the configuration.
- If an integer option read from configuration is parsable to an integer.
- Parse and Serialize enum configuration options directly using a mapping from `llvm::StringRef` to `EnumType`.
- If an integer or enum option isn't parseable but there is a default value it will issue a warning to stderr that the config value hasn't been used.
- If an enum option isn't parsable it can provide a hint if the value was a typo.
Reviewers: aaron.ballman, alexfh, gribozavr2
Reviewed By: aaron.ballman
Subscribers: xazax.hun, cfe-commits
Tags: #clang, #clang-tools-extra
Differential Revision: https://reviews.llvm.org/D77085
Summary:
Motivated by [[ https://bugs.llvm.org/show_bug.cgi?id=45045 | Tune inspections to a specific C++ standard. ]]
Moves the isLanguageVersionSupported virtual function from `MakeSmartPtrCheck` to the base `ClangTidyCheck` class.
This will disable registering matchers or pp callbacks on unsupported language versions for a check.
Having it as a standalone function is cleaner than manually disabling the check in the register function and should hopefully
encourage check developers to actually restrict the check based on language version.
As an added bonus this could enable automatic detection of what language version a check runs on for the purpose of documentation generation
Reviewers: aaron.ballman, gribozavr2, Eugene.Zelenko, JonasToth, alexfh, hokein
Reviewed By: gribozavr2
Subscribers: xazax.hun, jkorous, arphaman, kadircet, usaxena95, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D75289
This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.
This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.
This doesn't actually modify StringRef yet, I'll do that in a follow-up.
Summary:
This patch extends the already existing facility to add 'const' to variables
to be more flexible and correct. The previous version did not consider pointers
as value AND pointee. For future automatic introduction for const-correctness
this shortcoming needs to be fixed.
It always allows configuration where the 'const' token is inserted, either on
the left side (if possible) or the right side.
It adds many unit-tests to the utility-function that did not exist before, as
the function was implicitly tested through clang-tidy checks. These
tests were not changed, as the API is still compatible.
Reviewers: aaron.ballman, hokein, alexfh, shuaiwang, lebedev.ri
Reviewed By: aaron.ballman
Subscribers: jdoerfert, mgorny, xazax.hun, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D54395
Summary:
Updates the relevant source files to use bindings in `clang::transformer` rather
than `clang::tooling`.
Reviewers: gribozavr
Subscribers: xazax.hun, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D69804
Kadir Cetinkaya