1//===--- ExceptionEscapeCheck.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 "ExceptionEscapeCheck.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
18using namespace clang::ast_matchers;
19
20namespace clang::tidy::openmp {
21
22ExceptionEscapeCheck::ExceptionEscapeCheck(StringRef Name,
23 ClangTidyContext *Context)
24 : ClangTidyCheck(Name, Context),
25 RawIgnoredExceptions(Options.get(LocalName: "IgnoredExceptions", Default: "")) {
26 llvm::SmallVector<StringRef, 8> FunctionsThatShouldNotThrowVec,
27 IgnoredExceptionsVec;
28
29 llvm::StringSet<> IgnoredExceptions;
30 StringRef(RawIgnoredExceptions).split(A&: IgnoredExceptionsVec, Separator: ",", MaxSplit: -1, KeepEmpty: false);
31 llvm::transform(Range&: IgnoredExceptionsVec, d_first: IgnoredExceptionsVec.begin(),
32 F: [](StringRef S) { return S.trim(); });
33 IgnoredExceptions.insert(begin: IgnoredExceptionsVec.begin(),
34 end: IgnoredExceptionsVec.end());
35 Tracer.ignoreExceptions(ExceptionNames: std::move(IgnoredExceptions));
36 Tracer.ignoreBadAlloc(ShallIgnore: true);
37}
38
39void ExceptionEscapeCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
40 Options.store(Options&: Opts, LocalName: "IgnoredExceptions", Value: RawIgnoredExceptions);
41}
42
43void ExceptionEscapeCheck::registerMatchers(MatchFinder *Finder) {
44 Finder->addMatcher(NodeMatch: ompExecutableDirective(
45 unless(isStandaloneDirective()),
46 hasStructuredBlock(InnerMatcher: stmt().bind(ID: "structured-block")))
47 .bind(ID: "directive"),
48 Action: this);
49}
50
51void ExceptionEscapeCheck::check(const MatchFinder::MatchResult &Result) {
52 const auto *Directive =
53 Result.Nodes.getNodeAs<OMPExecutableDirective>(ID: "directive");
54 assert(Directive && "Expected to match some OpenMP Executable directive.");
55 const auto *StructuredBlock =
56 Result.Nodes.getNodeAs<Stmt>(ID: "structured-block");
57 assert(StructuredBlock && "Expected to get some OpenMP Structured Block.");
58
59 if (Tracer.analyze(Stmt: StructuredBlock).getBehaviour() !=
60 utils::ExceptionAnalyzer::State::Throwing)
61 return; // No exceptions have been proven to escape out of the struc. block.
62
63 // FIXME: We should provide more information about the exact location where
64 // the exception is thrown, maybe the full path the exception escapes.
65
66 diag(Loc: StructuredBlock->getBeginLoc(),
67 Description: "an exception thrown inside of the OpenMP '%0' region is not caught in "
68 "that same region")
69 << getOpenMPDirectiveName(Directive->getDirectiveKind());
70}
71
72} // namespace clang::tidy::openmp
73

source code of clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.cpp