clang-tools 19.0.0git
NoIntToPtrCheck.cpp
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1//===--- NoIntToPtrCheck.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 "NoIntToPtrCheck.h"
10#include "clang/AST/ASTContext.h"
11#include "clang/ASTMatchers/ASTMatchFinder.h"
12
13using namespace clang::ast_matchers;
14
16
17void NoIntToPtrCheck::registerMatchers(MatchFinder *Finder) {
18 Finder->addMatcher(castExpr(hasCastKind(CK_IntegralToPointer),
19 unless(hasSourceExpression(integerLiteral())))
20 .bind("x"),
21 this);
22}
23
24void NoIntToPtrCheck::check(const MatchFinder::MatchResult &Result) {
25 const auto *MatchedCast = Result.Nodes.getNodeAs<CastExpr>("x");
26 diag(MatchedCast->getBeginLoc(),
27 "integer to pointer cast pessimizes optimization opportunities");
28}
29
30} // namespace clang::tidy::performance
DiagnosticBuilder diag(SourceLocation Loc, StringRef Description, DiagnosticIDs::Level Level=DiagnosticIDs::Warning)
Add a diagnostic with the check's name.
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.