1 //===--- UseDefaultNoneCheck.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 "UseDefaultNoneCheck.h"
10 #include "clang/AST/ASTContext.h"
11 #include "clang/AST/OpenMPClause.h"
12 #include "clang/AST/Stmt.h"
13 #include "clang/AST/StmtOpenMP.h"
14 #include "clang/ASTMatchers/ASTMatchFinder.h"
15 #include "clang/ASTMatchers/ASTMatchers.h"
16 #include "clang/ASTMatchers/ASTMatchersMacros.h"
17
18 using namespace clang::ast_matchers;
19
20 namespace clang::tidy::openmp {
21
registerMatchers(MatchFinder * Finder)22 void UseDefaultNoneCheck::registerMatchers(MatchFinder *Finder) {
23 Finder->addMatcher(
24 ompExecutableDirective(
25 isAllowedToContainClauseKind(llvm::omp::OMPC_default),
26 anyOf(unless(hasAnyClause(ompDefaultClause())),
27 hasAnyClause(
28 ompDefaultClause(unless(isNoneKind())).bind("clause"))))
29 .bind("directive"),
30 this);
31 }
32
check(const MatchFinder::MatchResult & Result)33 void UseDefaultNoneCheck::check(const MatchFinder::MatchResult &Result) {
34 const auto *Directive =
35 Result.Nodes.getNodeAs<OMPExecutableDirective>("directive");
36 assert(Directive != nullptr && "Expected to match some directive.");
37
38 if (const auto *Clause = Result.Nodes.getNodeAs<OMPDefaultClause>("clause")) {
39 diag(Directive->getBeginLoc(),
40 "OpenMP directive '%0' specifies 'default(%1)' clause, consider using "
41 "'default(none)' clause instead")
42 << getOpenMPDirectiveName(Directive->getDirectiveKind())
43 << getOpenMPSimpleClauseTypeName(Clause->getClauseKind(),
44 unsigned(Clause->getDefaultKind()));
45 diag(Clause->getBeginLoc(), "existing 'default' clause specified here",
46 DiagnosticIDs::Note);
47 return;
48 }
49
50 diag(Directive->getBeginLoc(),
51 "OpenMP directive '%0' does not specify 'default' clause, consider "
52 "specifying 'default(none)' clause")
53 << getOpenMPDirectiveName(Directive->getDirectiveKind());
54 }
55
56 } // namespace clang::tidy::openmp
57