Author: Piotr Zegar Date: 2024-05-30T15:56:04+02:00 New Revision: 57da0407c44b187feed40b02cdfd24d71df755cc
URL: https://github.com/llvm/llvm-project/commit/57da0407c44b187feed40b02cdfd24d71df755cc DIFF: https://github.com/llvm/llvm-project/commit/57da0407c44b187feed40b02cdfd24d71df755cc.diff LOG: [clang-tidy] Check number of arguments to size/length in readability-container-size-empty (#93724) Verify that size/length methods are called with no arguments. Closes #88203 Added: Modified: clang-tools-extra/clang-tidy/readability/ContainerSizeEmptyCheck.cpp clang-tools-extra/docs/ReleaseNotes.rst clang-tools-extra/test/clang-tidy/checkers/readability/container-size-empty.cpp Removed: ################################################################################ diff --git a/clang-tools-extra/clang-tidy/readability/ContainerSizeEmptyCheck.cpp b/clang-tools-extra/clang-tidy/readability/ContainerSizeEmptyCheck.cpp index 19307b4cdcbe3..bbc1b47b97ae6 100644 --- a/clang-tools-extra/clang-tidy/readability/ContainerSizeEmptyCheck.cpp +++ b/clang-tools-extra/clang-tidy/readability/ContainerSizeEmptyCheck.cpp @@ -150,6 +150,7 @@ void ContainerSizeEmptyCheck::registerMatchers(MatchFinder *Finder) { Finder->addMatcher( cxxMemberCallExpr( + argumentCountIs(0), on(expr(anyOf(hasType(ValidContainer), hasType(pointsTo(ValidContainer)), hasType(references(ValidContainer)))) @@ -163,7 +164,8 @@ void ContainerSizeEmptyCheck::registerMatchers(MatchFinder *Finder) { this); Finder->addMatcher( - callExpr(has(cxxDependentScopeMemberExpr( + callExpr(argumentCountIs(0), + has(cxxDependentScopeMemberExpr( hasObjectExpression( expr(anyOf(hasType(ValidContainer), hasType(pointsTo(ValidContainer)), diff --git a/clang-tools-extra/docs/ReleaseNotes.rst b/clang-tools-extra/docs/ReleaseNotes.rst index a5e87d26d96c3..4f674d1a4d556 100644 --- a/clang-tools-extra/docs/ReleaseNotes.rst +++ b/clang-tools-extra/docs/ReleaseNotes.rst @@ -368,6 +368,10 @@ Changes in existing checks <clang-tidy/checks/readability/const-return-type>` check to eliminate false positives when returning types with const not at the top level. +- Improved :doc:`readability-container-size-empty + <clang-tidy/checks/readability/container-size-empty>` check to prevent false + positives when utilizing ``size`` or ``length`` methods that accept parameter. + - Improved :doc:`readability-duplicate-include <clang-tidy/checks/readability/duplicate-include>` check by excluding include directives that form the filename using macro. diff --git a/clang-tools-extra/test/clang-tidy/checkers/readability/container-size-empty.cpp b/clang-tools-extra/test/clang-tidy/checkers/readability/container-size-empty.cpp index 84bdbd58b85e9..ecaf97fa348cc 100644 --- a/clang-tools-extra/test/clang-tidy/checkers/readability/container-size-empty.cpp +++ b/clang-tools-extra/test/clang-tidy/checkers/readability/container-size-empty.cpp @@ -861,3 +861,31 @@ namespace PR72619 { if (0 >= s.size()) {} } } + +namespace PR88203 { + struct SS { + bool empty() const; + int size() const; + int length(int) const; + }; + + struct SU { + bool empty() const; + int size(int) const; + int length() const; + }; + + void f(const SS& s) { + if (0 == s.length(1)) {} + if (0 == s.size()) {} + // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: the 'empty' method should be used to check for emptiness instead of 'size' [readability-container-size-empty] + // CHECK-FIXES: {{^ }}if (s.empty()) {}{{$}} + } + + void f(const SU& s) { + if (0 == s.size(1)) {} + if (0 == s.length()) {} + // CHECK-MESSAGES: :[[@LINE-1]]:14: warning: the 'empty' method should be used to check for emptiness instead of 'length' [readability-container-size-empty] + // CHECK-FIXES: {{^ }}if (s.empty()) {}{{$}} + } +} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
