llvm/clang/unittests/Sema/ExternalSemaSourceTest.cpp

//=== unittests/Sema/ExternalSemaSourceTest.cpp - ExternalSemaSource tests ===//
//
// 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 "clang/AST/ASTConsumer.h"
#include "clang/AST/ASTContext.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Parse/ParseAST.h"
#include "clang/Sema/ExternalSemaSource.h"
#include "clang/Sema/Sema.h"
#include "clang/Sema/SemaDiagnostic.h"
#include "clang/Sema/TypoCorrection.h"
#include "clang/Tooling/Tooling.h"
#include "gtest/gtest.h"

usingnamespaceclang;
usingnamespaceclang::tooling;

namespace {

// \brief Counts the number of times MaybeDiagnoseMissingCompleteType
// is called. Returns the result it was provided on creation.
class CompleteTypeDiagnoser : public clang::ExternalSemaSource { … };

/// Counts the number of typo-correcting diagnostics correcting from one name to
/// another while still passing all diagnostics along a chain of consumers.
class DiagnosticWatcher : public clang::DiagnosticConsumer { … };

// \brief Always corrects a typo matching CorrectFrom with a new namespace
// with the name CorrectTo.
class NamespaceTypoProvider : public clang::ExternalSemaSource { … };

class FunctionTypoProvider : public clang::ExternalSemaSource { … };

// \brief Chains together a vector of DiagnosticWatchers and
// adds a vector of ExternalSemaSources to the CompilerInstance before
// performing semantic analysis.
class ExternalSemaSourceInstaller : public clang::ASTFrontendAction { … };

makeIntrusiveRefCnt;

// Make sure that the DiagnosticWatcher is not miscounting.
TEST(ExternalSemaSource, DiagCheck) { … }

// Check that when we add a NamespaceTypeProvider, we use that suggestion
// instead of the usual suggestion we would use above.
TEST(ExternalSemaSource, ExternalTypoCorrectionPrioritized) { … }

// Check that we use the first successful TypoCorrection returned from an
// ExternalSemaSource.
TEST(ExternalSemaSource, ExternalTypoCorrectionOrdering) { … }

TEST(ExternalSemaSource, ExternalDelayedTypoCorrection) { … }

// We should only try MaybeDiagnoseMissingCompleteType if we can't otherwise
// solve the problem.
TEST(ExternalSemaSource, TryOtherTacticsBeforeDiagnosing) { … }

// The first ExternalSemaSource where MaybeDiagnoseMissingCompleteType returns
// true should be the last one called.
TEST(ExternalSemaSource, FirstDiagnoserTaken) { … }

} // anonymous namespace