clang-tools 10.0.0

SizeofContainerCheck.cpp
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1 //===--- SizeofContainerCheck.cpp - clang-tidy-----------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "SizeofContainerCheck.h"
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12
13 using namespace clang::ast_matchers;
14
15 namespace clang {
16 namespace tidy {
17 namespace bugprone {
18
19 void SizeofContainerCheck::registerMatchers(MatchFinder *Finder) {
20 Finder->addMatcher(
21 expr(unless(isInTemplateInstantiation()),
22 expr(sizeOfExpr(has(ignoringParenImpCasts(
23 expr(hasType(hasCanonicalType(hasDeclaration(cxxRecordDecl(
24 matchesName("^(::std::|::string)"),
25 unless(matchesName("^::std::(bitset|array)$")),
26 hasMethod(cxxMethodDecl(hasName("size"), isPublic(),
27 isConst())))))))))))
28 .bind("sizeof"),
29 // Ignore ARRAYSIZE(<array of containers>) pattern.
30 unless(hasAncestor(binaryOperator(
31 anyOf(hasOperatorName("/"), hasOperatorName("%")),
32 hasLHS(ignoringParenCasts(sizeOfExpr(expr()))),
33 hasRHS(ignoringParenCasts(equalsBoundNode("sizeof"))))))),
34 this);
35 }
36
37 void SizeofContainerCheck::check(const MatchFinder::MatchResult &Result) {
38 const auto *SizeOf =
39 Result.Nodes.getNodeAs<UnaryExprOrTypeTraitExpr>("sizeof");
40
41 auto Diag =
42 diag(SizeOf->getBeginLoc(), "sizeof() doesn't return the size of the "
43 "container; did you mean .size()?");
44 }
45
46 } // namespace bugprone
47 } // namespace tidy
48 } // namespace clang
clang::ast_matchers
Definition: AbseilMatcher.h:14
SizeofContainerCheck.h
clang::doc::serialize::isPublic
static bool isPublic(const clang::AccessSpecifier AS, const clang::Linkage Link)
Definition: Serialize.cpp:223
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27