clang-tools 20.0.0git
RedundantFunctionPtrDereferenceCheck.cpp
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1//===--- RedundantFunctionPtrDereferenceCheck.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
10#include "clang/AST/ASTContext.h"
11#include "clang/ASTMatchers/ASTMatchFinder.h"
12
13using namespace clang::ast_matchers;
14
16
18 Finder->addMatcher(
19 traverse(TK_AsIs, unaryOperator(hasOperatorName("*"),
20 has(implicitCastExpr(hasCastKind(
21 CK_FunctionToPointerDecay))))
22 .bind("op")),
23 this);
24}
25
26void RedundantFunctionPtrDereferenceCheck::check(const MatchFinder::MatchResult &Result) {
27 const auto *Operator = Result.Nodes.getNodeAs<UnaryOperator>("op");
28 diag(Operator->getOperatorLoc(),
29 "redundant repeated dereference of function pointer")
30 << FixItHint::CreateRemoval(Operator->getOperatorLoc());
31}
32
33} // namespace clang::tidy::readability
DiagnosticBuilder diag(SourceLocation Loc, StringRef Description, DiagnosticIDs::Level Level=DiagnosticIDs::Warning)
Add a diagnostic with the check's name.
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.