1 //===--- ThrowKeywordMissingCheck.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 "ThrowKeywordMissingCheck.h" 10 #include "clang/AST/ASTContext.h" 11 #include "clang/ASTMatchers/ASTMatchFinder.h" 12 13 using namespace clang::ast_matchers; 14 15 namespace clang::tidy::bugprone { 16 17 void ThrowKeywordMissingCheck::registerMatchers(MatchFinder *Finder) { 18 Finder->addMatcher( 19 cxxConstructExpr( 20 hasType(cxxRecordDecl( 21 isSameOrDerivedFrom(matchesName("[Ee]xception|EXCEPTION")))), 22 unless(anyOf( 23 hasAncestor( 24 stmt(anyOf(cxxThrowExpr(), callExpr(), returnStmt()))), 25 hasAncestor(decl(anyOf(varDecl(), fieldDecl()))), 26 hasAncestor(expr(cxxNewExpr(hasAnyPlacementArg(anything())))), 27 allOf(hasAncestor(cxxConstructorDecl()), 28 unless(hasAncestor(cxxCatchStmt())))))) 29 .bind("temporary-exception-not-thrown"), 30 this); 31 } 32 33 void ThrowKeywordMissingCheck::check(const MatchFinder::MatchResult &Result) { 34 const auto *TemporaryExpr = 35 Result.Nodes.getNodeAs<Expr>("temporary-exception-not-thrown"); 36 37 diag(TemporaryExpr->getBeginLoc(), "suspicious exception object created but " 38 "not thrown; did you mean 'throw %0'?") 39 << TemporaryExpr->getType().getBaseTypeIdentifier()->getName(); 40 } 41 42 } // namespace clang::tidy::bugprone 43