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//===- unittest/Format/TokenAnnotatorTest.cpp - Formatting unit 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/Format/Format.h"
#include "FormatTestUtils.h"
#include "TestLexer.h"
#include "gtest/gtest.h"
namespace clang {
namespace format {
namespace {
class TokenAnnotatorTest : public ::testing::Test {
protected:
TokenList annotate(llvm::StringRef Code,
const FormatStyle &Style = getLLVMStyle()) {
return TestLexer(Allocator, Buffers, Style).annotate(Code);
}
llvm::SpecificBumpPtrAllocator<FormatToken> Allocator;
std::vector<std::unique_ptr<llvm::MemoryBuffer>> Buffers;
};
#define EXPECT_TOKEN_KIND(FormatTok, Kind) \
EXPECT_EQ((FormatTok)->Tok.getKind(), Kind) << *(FormatTok)
#define EXPECT_TOKEN_TYPE(FormatTok, Type) \
EXPECT_EQ((FormatTok)->getType(), Type) << *(FormatTok)
#define EXPECT_TOKEN(FormatTok, Kind, Type) \
do { \
EXPECT_TOKEN_KIND(FormatTok, Kind); \
EXPECT_TOKEN_TYPE(FormatTok, Type); \
} while (false);
TEST_F(TokenAnnotatorTest, UnderstandsUsesOfStarAndAmpInMacroDefinition) {
// This is a regression test for mis-parsing the & after decltype as a binary
// operator instead of a reference (when inside a macro definition).
auto Tokens = annotate("auto x = [](const decltype(x) &ptr) {};");
EXPECT_EQ(Tokens.size(), 18u) << Tokens;
EXPECT_TOKEN(Tokens[7], tok::kw_decltype, TT_Unknown);
EXPECT_TOKEN(Tokens[8], tok::l_paren, TT_TypeDeclarationParen);
EXPECT_TOKEN(Tokens[9], tok::identifier, TT_Unknown);
EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen);
EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference);
// Same again with * instead of &:
Tokens = annotate("auto x = [](const decltype(x) *ptr) {};");
EXPECT_EQ(Tokens.size(), 18u) << Tokens;
EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen);
EXPECT_TOKEN(Tokens[11], tok::star, TT_PointerOrReference);
// Also check that we parse correctly within a macro definition:
Tokens = annotate("#define lambda [](const decltype(x) &ptr) {}");
EXPECT_EQ(Tokens.size(), 17u) << Tokens;
EXPECT_TOKEN(Tokens[7], tok::kw_decltype, TT_Unknown);
EXPECT_TOKEN(Tokens[8], tok::l_paren, TT_TypeDeclarationParen);
EXPECT_TOKEN(Tokens[9], tok::identifier, TT_Unknown);
EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen);
EXPECT_TOKEN(Tokens[11], tok::amp, TT_PointerOrReference);
// Same again with * instead of &:
Tokens = annotate("#define lambda [](const decltype(x) *ptr) {}");
EXPECT_EQ(Tokens.size(), 17u) << Tokens;
EXPECT_TOKEN(Tokens[10], tok::r_paren, TT_TypeDeclarationParen);
EXPECT_TOKEN(Tokens[11], tok::star, TT_PointerOrReference);
}
} // namespace
} // namespace format
} // namespace clang
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