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77 lines
3.0 KiB
77 lines
3.0 KiB
7 months ago
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//===--- ExceptionEscapeCheck.cpp - clang-tidy ----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "ExceptionEscapeCheck.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/OpenMPClause.h"
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#include "clang/AST/Stmt.h"
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#include "clang/AST/StmtOpenMP.h"
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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#include "clang/ASTMatchers/ASTMatchers.h"
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#include "clang/ASTMatchers/ASTMatchersMacros.h"
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using namespace clang::ast_matchers;
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namespace clang {
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namespace tidy {
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namespace openmp {
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ExceptionEscapeCheck::ExceptionEscapeCheck(StringRef Name,
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ClangTidyContext *Context)
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: ClangTidyCheck(Name, Context),
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RawIgnoredExceptions(Options.get("IgnoredExceptions", "")) {
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llvm::SmallVector<StringRef, 8> FunctionsThatShouldNotThrowVec,
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IgnoredExceptionsVec;
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llvm::StringSet<> IgnoredExceptions;
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StringRef(RawIgnoredExceptions).split(IgnoredExceptionsVec, ",", -1, false);
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llvm::transform(IgnoredExceptionsVec, IgnoredExceptionsVec.begin(),
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[](StringRef S) { return S.trim(); });
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IgnoredExceptions.insert(IgnoredExceptionsVec.begin(),
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IgnoredExceptionsVec.end());
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Tracer.ignoreExceptions(std::move(IgnoredExceptions));
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Tracer.ignoreBadAlloc(true);
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}
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void ExceptionEscapeCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
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Options.store(Opts, "IgnoredExceptions", RawIgnoredExceptions);
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}
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void ExceptionEscapeCheck::registerMatchers(MatchFinder *Finder) {
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Finder->addMatcher(ompExecutableDirective(
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unless(isStandaloneDirective()),
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hasStructuredBlock(stmt().bind("structured-block")))
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.bind("directive"),
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this);
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}
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void ExceptionEscapeCheck::check(const MatchFinder::MatchResult &Result) {
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const auto *Directive =
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Result.Nodes.getNodeAs<OMPExecutableDirective>("directive");
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assert(Directive && "Expected to match some OpenMP Executable directive.");
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const auto *StructuredBlock =
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Result.Nodes.getNodeAs<Stmt>("structured-block");
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assert(StructuredBlock && "Expected to get some OpenMP Structured Block.");
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if (Tracer.analyze(StructuredBlock).getBehaviour() !=
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utils::ExceptionAnalyzer::State::Throwing)
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return; // No exceptions have been proven to escape out of the struc. block.
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// FIXME: We should provide more information about the exact location where
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// the exception is thrown, maybe the full path the exception escapes.
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diag(StructuredBlock->getBeginLoc(),
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"an exception thrown inside of the OpenMP '%0' region is not caught in "
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"that same region")
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<< getOpenMPDirectiveName(Directive->getDirectiveKind());
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}
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} // namespace openmp
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} // namespace tidy
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} // namespace clang
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