llvm/clang-tools-extra/clang-tidy/objc/NSInvocationArgumentLifetimeCheck.cpp

//===--- NSInvocationArgumentLifetimeCheck.cpp - clang-tidy ---------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "NSInvocationArgumentLifetimeCheck.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ComputeDependence.h"
#include "clang/AST/Decl.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprObjC.h"
#include "clang/AST/Type.h"
#include "clang/AST/TypeLoc.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/ASTMatchers/ASTMatchers.h"
#include "clang/ASTMatchers/ASTMatchersMacros.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Lex/Lexer.h"
#include "llvm/ADT/StringRef.h"
#include <optional>

usingnamespaceclang::ast_matchers;

namespace clang::tidy::objc {
namespace {

static constexpr StringRef WeakText = …;
static constexpr StringRef StrongText = …;
static constexpr StringRef UnsafeUnretainedText = …;

/// Matches ObjCIvarRefExpr, DeclRefExpr, or MemberExpr that reference
/// Objective-C object (or block) variables or fields whose object lifetimes
/// are not __unsafe_unretained.
AST_POLYMORPHIC_MATCHER(isObjCManagedLifetime,
                        AST_POLYMORPHIC_SUPPORTED_TYPES(ObjCIvarRefExpr,
                                                        DeclRefExpr,
                                                        MemberExpr)) { … }

static std::optional<FixItHint>
fixItHintReplacementForOwnershipString(StringRef Text, CharSourceRange Range,
                                       StringRef Ownership) { … }

static std::optional<FixItHint>
fixItHintForVarDecl(const VarDecl *VD, const SourceManager &SM,
                    const LangOptions &LangOpts) { … }

} // namespace

void NSInvocationArgumentLifetimeCheck::registerMatchers(MatchFinder *Finder) { … }

void NSInvocationArgumentLifetimeCheck::check(
    const MatchFinder::MatchResult &Result) { … }

} // namespace clang::tidy::objc