| //===--- NoexceptFunctionCheck.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 "NoexceptFunctionBaseCheck.h" |
| #include "../utils/LexerUtils.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/Decl.h" |
| #include "clang/ASTMatchers/ASTMatchFinder.h" |
| |
| using namespace clang::ast_matchers; |
| |
| namespace clang::tidy::performance { |
| |
| void NoexceptFunctionBaseCheck::check(const MatchFinder::MatchResult &Result) { |
| const auto *FuncDecl = Result.Nodes.getNodeAs<FunctionDecl>(BindFuncDeclName); |
| assert(FuncDecl); |
| |
| if (SpecAnalyzer.analyze(FuncDecl) != |
| utils::ExceptionSpecAnalyzer::State::Throwing) |
| return; |
| |
| // Don't complain about nothrow(false), but complain on nothrow(expr) |
| // where expr evaluates to false. |
| const auto *ProtoType = FuncDecl->getType()->castAs<FunctionProtoType>(); |
| const Expr *NoexceptExpr = ProtoType->getNoexceptExpr(); |
| if (NoexceptExpr) { |
| NoexceptExpr = NoexceptExpr->IgnoreImplicit(); |
| if (!isa<CXXBoolLiteralExpr>(NoexceptExpr)) |
| reportNoexceptEvaluatedToFalse(FuncDecl, NoexceptExpr); |
| return; |
| } |
| |
| auto Diag = reportMissingNoexcept(FuncDecl); |
| |
| // Add FixIt hints. |
| const SourceManager &SM = *Result.SourceManager; |
| |
| const SourceLocation NoexceptLoc = |
| utils::lexer::getLocationForNoexceptSpecifier(FuncDecl, SM); |
| if (NoexceptLoc.isValid()) |
| Diag << FixItHint::CreateInsertion(NoexceptLoc, " noexcept "); |
| } |
| |
| } // namespace clang::tidy::performance |