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//===- unittests/AST/NamedDeclPrinterTest.cpp --- NamedDecl printer tests -===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains tests for NamedDecl::printQualifiedName().
//
// These tests have a coding convention:
// * declaration to be printed is named 'A' unless it should have some special
// name (e.g., 'operator+');
// * additional helper declarations are 'Z', 'Y', 'X' and so on.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/SmallString.h"
#include "gtest/gtest.h"
using namespace clang;
using namespace ast_matchers;
using namespace tooling;
namespace {
class PrintMatch : public MatchFinder::MatchCallback {
SmallString<1024> Printed;
unsigned NumFoundDecls;
bool SuppressUnwrittenScope;
public:
explicit PrintMatch(bool suppressUnwrittenScope)
: NumFoundDecls(0), SuppressUnwrittenScope(suppressUnwrittenScope) {}
void run(const MatchFinder::MatchResult &Result) override {
const NamedDecl *ND = Result.Nodes.getNodeAs<NamedDecl>("id");
if (!ND)
return;
NumFoundDecls++;
if (NumFoundDecls > 1)
return;
llvm::raw_svector_ostream Out(Printed);
PrintingPolicy Policy = Result.Context->getPrintingPolicy();
Policy.SuppressUnwrittenScope = SuppressUnwrittenScope;
ND->printQualifiedName(Out, Policy);
}
StringRef getPrinted() const {
return Printed;
}
unsigned getNumFoundDecls() const {
return NumFoundDecls;
}
};
::testing::AssertionResult
PrintedNamedDeclMatches(StringRef Code, const std::vector<std::string> &Args,
bool SuppressUnwrittenScope,
const DeclarationMatcher &NodeMatch,
StringRef ExpectedPrinted, StringRef FileName) {
PrintMatch Printer(SuppressUnwrittenScope);
MatchFinder Finder;
Finder.addMatcher(NodeMatch, &Printer);
std::unique_ptr<FrontendActionFactory> Factory =
newFrontendActionFactory(&Finder);
if (!runToolOnCodeWithArgs(Factory->create(), Code, Args, FileName))
return testing::AssertionFailure()
<< "Parsing error in \"" << Code.str() << "\"";
if (Printer.getNumFoundDecls() == 0)
return testing::AssertionFailure()
<< "Matcher didn't find any named declarations";
if (Printer.getNumFoundDecls() > 1)
return testing::AssertionFailure()
<< "Matcher should match only one named declaration "
"(found " << Printer.getNumFoundDecls() << ")";
if (Printer.getPrinted() != ExpectedPrinted)
return ::testing::AssertionFailure()
<< "Expected \"" << ExpectedPrinted.str() << "\", "
"got \"" << Printer.getPrinted().str() << "\"";
return ::testing::AssertionSuccess();
}
::testing::AssertionResult
PrintedNamedDeclCXX98Matches(StringRef Code, StringRef DeclName,
StringRef ExpectedPrinted) {
std::vector<std::string> Args(1, "-std=c++98");
return PrintedNamedDeclMatches(Code,
Args,
/*SuppressUnwrittenScope*/ false,
namedDecl(hasName(DeclName)).bind("id"),
ExpectedPrinted,
"input.cc");
}
::testing::AssertionResult
PrintedWrittenNamedDeclCXX11Matches(StringRef Code, StringRef DeclName,
StringRef ExpectedPrinted) {
std::vector<std::string> Args(1, "-std=c++11");
return PrintedNamedDeclMatches(Code,
Args,
/*SuppressUnwrittenScope*/ true,
namedDecl(hasName(DeclName)).bind("id"),
ExpectedPrinted,
"input.cc");
}
} // unnamed namespace
TEST(NamedDeclPrinter, TestNamespace1) {
ASSERT_TRUE(PrintedNamedDeclCXX98Matches(
"namespace { int A; }",
"A",
"(anonymous namespace)::A"));
}
TEST(NamedDeclPrinter, TestNamespace2) {
ASSERT_TRUE(PrintedWrittenNamedDeclCXX11Matches(
"inline namespace Z { namespace { int A; } }",
"A",
"A"));
}
TEST(NamedDeclPrinter, TestUnscopedUnnamedEnum) {
ASSERT_TRUE(PrintedWrittenNamedDeclCXX11Matches(
"enum { A };",
"A",
"A"));
}
TEST(NamedDeclPrinter, TestNamedEnum) {
ASSERT_TRUE(PrintedWrittenNamedDeclCXX11Matches(
"enum X { A };",
"A",
"A"));
}
TEST(NamedDeclPrinter, TestScopedNamedEnum) {
ASSERT_TRUE(PrintedWrittenNamedDeclCXX11Matches(
"enum class X { A };",
"A",
"X::A"));
}
TEST(NamedDeclPrinter, TestClassWithUnscopedUnnamedEnum) {
ASSERT_TRUE(PrintedWrittenNamedDeclCXX11Matches(
"class X { enum { A }; };",
"A",
"X::A"));
}
TEST(NamedDeclPrinter, TestClassWithUnscopedNamedEnum) {
ASSERT_TRUE(PrintedWrittenNamedDeclCXX11Matches(
"class X { enum Y { A }; };",
"A",
"X::A"));
}
TEST(NamedDeclPrinter, TestClassWithScopedNamedEnum) {
ASSERT_TRUE(PrintedWrittenNamedDeclCXX11Matches(
"class X { enum class Y { A }; };",
"A",
"X::Y::A"));
}
TEST(NamedDeclPrinter, TestLinkageInNamespace) {
ASSERT_TRUE(PrintedWrittenNamedDeclCXX11Matches(
"namespace X { extern \"C\" { int A; } }",
"A",
"X::A"));
}
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