1 //===--- RedundantFunctionPtrDereferenceCheck.cpp - clang-tidy-------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "RedundantFunctionPtrDereferenceCheck.h"
11 #include "clang/AST/ASTContext.h"
12 #include "clang/ASTMatchers/ASTMatchFinder.h"
13 
14 using namespace clang::ast_matchers;
15 
16 namespace clang {
17 namespace tidy {
18 namespace readability {
19 
20 void RedundantFunctionPtrDereferenceCheck::registerMatchers(MatchFinder *Finder) {
21   Finder->addMatcher(unaryOperator(hasOperatorName("*"),
22                                    has(implicitCastExpr(
23                                        hasCastKind(CK_FunctionToPointerDecay))))
24                          .bind("op"),
25                      this);
26 }
27 
28 void RedundantFunctionPtrDereferenceCheck::check(const MatchFinder::MatchResult &Result) {
29   const auto *Operator = Result.Nodes.getNodeAs<UnaryOperator>("op");
30   diag(Operator->getOperatorLoc(),
31        "redundant repeated dereference of function pointer")
32       << FixItHint::CreateRemoval(Operator->getOperatorLoc());
33 }
34 
35 } // namespace readability
36 } // namespace tidy
37 } // namespace clang
38