clang-tools-extra/clang-tidy/performance/NoexceptMoveConstructorCheck.cpp

   1 //===--- NoexceptMoveConstructorCheck.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 "NoexceptMoveConstructorCheck.h"
  10 #include "clang/ASTMatchers/ASTMatchFinder.h"
  11
  12 using namespace clang::ast_matchers;
  13
  14 // FixItHint - comment added to fix list.rst generation in add_new_check.py.
  15 // Do not remove. Fixes are generated in base class.
  16
  17 namespace clang::tidy::performance {
  18
  19 void NoexceptMoveConstructorCheck::registerMatchers(MatchFinder *Finder) {
  20   Finder->addMatcher(
  21       cxxMethodDecl(unless(isDeleted()),
  22                     anyOf(cxxConstructorDecl(isMoveConstructor()),
  23                           isMoveAssignmentOperator()))
  24           .bind(BindFuncDeclName),
  25       this);
  26 }
  27
  28 DiagnosticBuilder NoexceptMoveConstructorCheck::reportMissingNoexcept(
  29     const FunctionDecl *FuncDecl) {
  30   return diag(FuncDecl->getLocation(),
  31               "move %select{assignment operator|constructor}0s should "
  32               "be marked noexcept")
  33          << CXXConstructorDecl::classof(FuncDecl);
  34 }
  35
  36 void NoexceptMoveConstructorCheck::reportNoexceptEvaluatedToFalse(
  37     const FunctionDecl *FuncDecl, const Expr *NoexceptExpr) {
  38   diag(NoexceptExpr->getExprLoc(),
  39        "noexcept specifier on the move %select{assignment "
  40        "operator|constructor}0 evaluates to 'false'")
  41       << CXXConstructorDecl::classof(FuncDecl);
  42 }
  43
  44 } // namespace clang::tidy::performance