forked from OSchip/llvm-project
49 lines
1.8 KiB
C++
49 lines
1.8 KiB
C++
//===--- SizeofContainerCheck.cpp - clang-tidy-----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "SizeofContainerCheck.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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using namespace clang::ast_matchers;
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namespace clang {
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namespace tidy {
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namespace bugprone {
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void SizeofContainerCheck::registerMatchers(MatchFinder *Finder) {
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Finder->addMatcher(
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expr(unless(isInTemplateInstantiation()),
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expr(sizeOfExpr(has(ignoringParenImpCasts(
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expr(hasType(hasCanonicalType(hasDeclaration(cxxRecordDecl(
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matchesName("^(::std::|::string)"),
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unless(matchesName("^::std::(bitset|array)$")),
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hasMethod(cxxMethodDecl(hasName("size"), isPublic(),
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isConst())))))))))))
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.bind("sizeof"),
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// Ignore ARRAYSIZE(<array of containers>) pattern.
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unless(hasAncestor(binaryOperator(
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anyOf(hasOperatorName("/"), hasOperatorName("%")),
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hasLHS(ignoringParenCasts(sizeOfExpr(expr()))),
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hasRHS(ignoringParenCasts(equalsBoundNode("sizeof"))))))),
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this);
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}
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void SizeofContainerCheck::check(const MatchFinder::MatchResult &Result) {
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const auto *SizeOf =
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Result.Nodes.getNodeAs<UnaryExprOrTypeTraitExpr>("sizeof");
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auto Diag =
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diag(SizeOf->getBeginLoc(), "sizeof() doesn't return the size of the "
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"container; did you mean .size()?");
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}
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} // namespace bugprone
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} // namespace tidy
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} // namespace clang
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