| //===--- NoAssemblerCheck.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 "NoAssemblerCheck.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/ASTMatchers/ASTMatchFinder.h" |
| |
| using namespace clang::ast_matchers; |
| |
| namespace clang { |
| namespace tidy { |
| namespace hicpp { |
| |
| namespace { |
| AST_MATCHER(VarDecl, isAsm) { return Node.hasAttr<clang::AsmLabelAttr>(); } |
| const ast_matchers::internal::VariadicDynCastAllOfMatcher<Decl, |
| FileScopeAsmDecl> |
| fileScopeAsmDecl; |
| } // namespace |
| |
| void NoAssemblerCheck::registerMatchers(MatchFinder *Finder) { |
| Finder->addMatcher(asmStmt().bind("asm-stmt"), this); |
| Finder->addMatcher(fileScopeAsmDecl().bind("asm-file-scope"), this); |
| Finder->addMatcher(varDecl(isAsm()).bind("asm-var"), this); |
| } |
| |
| void NoAssemblerCheck::check(const MatchFinder::MatchResult &Result) { |
| SourceLocation ASMLocation; |
| if (const auto *ASM = Result.Nodes.getNodeAs<AsmStmt>("asm-stmt")) |
| ASMLocation = ASM->getAsmLoc(); |
| else if (const auto *ASM = |
| Result.Nodes.getNodeAs<FileScopeAsmDecl>("asm-file-scope")) |
| ASMLocation = ASM->getAsmLoc(); |
| else if (const auto *ASM = Result.Nodes.getNodeAs<VarDecl>("asm-var")) |
| ASMLocation = ASM->getLocation(); |
| else |
| llvm_unreachable("Unhandled case in matcher."); |
| |
| diag(ASMLocation, "do not use inline assembler in safety-critical code"); |
| } |
| |
| } // namespace hicpp |
| } // namespace tidy |
| } // namespace clang |