1 //===-- CPlusPlusLanguageTest.cpp -------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 #include "gtest/gtest.h"
10 
11 #include "Plugins/Language/CPlusPlus/CPlusPlusLanguage.h"
12 
13 using namespace lldb_private;
14 
15 TEST(CPlusPlusLanguage, MethodNameParsing) {
16   struct TestCase {
17     std::string input;
18     std::string context, basename, arguments, qualifiers, scope_qualified_name;
19   };
20 
21   TestCase test_cases[] = {
22       {"main(int, char *[]) ", "", "main", "(int, char *[])", "", "main"},
23       {"foo::bar(baz) const", "foo", "bar", "(baz)", "const", "foo::bar"},
24       {"foo::~bar(baz)", "foo", "~bar", "(baz)", "", "foo::~bar"},
25       {"a::b::c::d(e,f)", "a::b::c", "d", "(e,f)", "", "a::b::c::d"},
26       {"void f(int)", "", "f", "(int)", "", "f"},
27 
28       // Operators
29       {"std::basic_ostream<char, std::char_traits<char> >& "
30        "std::operator<<<std::char_traits<char> >"
31        "(std::basic_ostream<char, std::char_traits<char> >&, char const*)",
32        "std", "operator<<<std::char_traits<char> >",
33        "(std::basic_ostream<char, std::char_traits<char> >&, char const*)", "",
34        "std::operator<<<std::char_traits<char> >"},
35       {"operator delete[](void*, clang::ASTContext const&, unsigned long)", "",
36        "operator delete[]", "(void*, clang::ASTContext const&, unsigned long)",
37        "", "operator delete[]"},
38       {"llvm::Optional<clang::PostInitializer>::operator bool() const",
39        "llvm::Optional<clang::PostInitializer>", "operator bool", "()", "const",
40        "llvm::Optional<clang::PostInitializer>::operator bool"},
41       {"(anonymous namespace)::FactManager::operator[](unsigned short)",
42        "(anonymous namespace)::FactManager", "operator[]", "(unsigned short)",
43        "", "(anonymous namespace)::FactManager::operator[]"},
44       {"const int& std::map<int, pair<short, int>>::operator[](short) const",
45        "std::map<int, pair<short, int>>", "operator[]", "(short)", "const",
46        "std::map<int, pair<short, int>>::operator[]"},
47       {"CompareInsn::operator()(llvm::StringRef, InsnMatchEntry const&)",
48        "CompareInsn", "operator()", "(llvm::StringRef, InsnMatchEntry const&)",
49        "", "CompareInsn::operator()"},
50       {"llvm::Optional<llvm::MCFixupKind>::operator*() const &",
51        "llvm::Optional<llvm::MCFixupKind>", "operator*", "()", "const &",
52        "llvm::Optional<llvm::MCFixupKind>::operator*"},
53       // Internal classes
54       {"operator<<(Cls, Cls)::Subclass::function()",
55        "operator<<(Cls, Cls)::Subclass", "function", "()", "",
56        "operator<<(Cls, Cls)::Subclass::function"},
57       {"SAEC::checkFunction(context&) const::CallBack::CallBack(int)",
58        "SAEC::checkFunction(context&) const::CallBack", "CallBack", "(int)", "",
59        "SAEC::checkFunction(context&) const::CallBack::CallBack"},
60       // Anonymous namespace
61       {"XX::(anonymous namespace)::anon_class::anon_func() const",
62        "XX::(anonymous namespace)::anon_class", "anon_func", "()", "const",
63        "XX::(anonymous namespace)::anon_class::anon_func"},
64 
65       // Function pointers
66       {"string (*f(vector<int>&&))(float)", "", "f", "(vector<int>&&)", "",
67        "f"},
68       {"void (*&std::_Any_data::_M_access<void (*)()>())()", "std::_Any_data",
69        "_M_access<void (*)()>", "()", "",
70        "std::_Any_data::_M_access<void (*)()>"},
71       {"void (*(*(*(*(*(*(*(* const&func1(int))())())())())())())())()", "",
72        "func1", "(int)", "", "func1"},
73 
74       // Decltype
75       {"decltype(nullptr)&& std::forward<decltype(nullptr)>"
76        "(std::remove_reference<decltype(nullptr)>::type&)",
77        "std", "forward<decltype(nullptr)>",
78        "(std::remove_reference<decltype(nullptr)>::type&)", "",
79        "std::forward<decltype(nullptr)>"},
80 
81       // Templates
82       {"void llvm::PM<llvm::Module, llvm::AM<llvm::Module>>::"
83        "addPass<llvm::VP>(llvm::VP)",
84        "llvm::PM<llvm::Module, llvm::AM<llvm::Module>>", "addPass<llvm::VP>",
85        "(llvm::VP)", "",
86        "llvm::PM<llvm::Module, llvm::AM<llvm::Module>>::"
87        "addPass<llvm::VP>"},
88       {"void std::vector<Class, std::allocator<Class> >"
89        "::_M_emplace_back_aux<Class const&>(Class const&)",
90        "std::vector<Class, std::allocator<Class> >",
91        "_M_emplace_back_aux<Class const&>", "(Class const&)", "",
92        "std::vector<Class, std::allocator<Class> >::"
93        "_M_emplace_back_aux<Class const&>"},
94       {"unsigned long llvm::countTrailingOnes<unsigned int>"
95        "(unsigned int, llvm::ZeroBehavior)",
96        "llvm", "countTrailingOnes<unsigned int>",
97        "(unsigned int, llvm::ZeroBehavior)", "",
98        "llvm::countTrailingOnes<unsigned int>"},
99       {"std::enable_if<(10u)<(64), bool>::type llvm::isUInt<10u>(unsigned "
100        "long)",
101        "llvm", "isUInt<10u>", "(unsigned long)", "", "llvm::isUInt<10u>"},
102       {"f<A<operator<(X,Y)::Subclass>, sizeof(B)<sizeof(C)>()", "",
103        "f<A<operator<(X,Y)::Subclass>, sizeof(B)<sizeof(C)>", "()", "",
104        "f<A<operator<(X,Y)::Subclass>, sizeof(B)<sizeof(C)>"}};
105 
106   for (const auto &test : test_cases) {
107     CPlusPlusLanguage::MethodName method(ConstString(test.input));
108     EXPECT_TRUE(method.IsValid()) << test.input;
109     if (method.IsValid()) {
110       EXPECT_EQ(test.context, method.GetContext().str());
111       EXPECT_EQ(test.basename, method.GetBasename().str());
112       EXPECT_EQ(test.arguments, method.GetArguments().str());
113       EXPECT_EQ(test.qualifiers, method.GetQualifiers().str());
114       EXPECT_EQ(test.scope_qualified_name, method.GetScopeQualifiedName());
115     }
116   }
117 }
118 
119 TEST(CPlusPlusLanguage, ExtractContextAndIdentifier) {
120   struct TestCase {
121     std::string input;
122     std::string context, basename;
123   };
124 
125   TestCase test_cases[] = {
126       {"main", "", "main"},
127       {"main     ", "", "main"},
128       {"foo01::bar", "foo01", "bar"},
129       {"foo::~bar", "foo", "~bar"},
130       {"std::vector<int>::push_back", "std::vector<int>", "push_back"},
131       {"operator<<(Cls, Cls)::Subclass::function",
132        "operator<<(Cls, Cls)::Subclass", "function"},
133       {"std::vector<Class, std::allocator<Class>>"
134        "::_M_emplace_back_aux<Class const&>",
135        "std::vector<Class, std::allocator<Class>>",
136        "_M_emplace_back_aux<Class const&>"}};
137 
138   llvm::StringRef context, basename;
139   for (const auto &test : test_cases) {
140     EXPECT_TRUE(CPlusPlusLanguage::ExtractContextAndIdentifier(
141         test.input.c_str(), context, basename));
142     EXPECT_EQ(test.context, context.str());
143     EXPECT_EQ(test.basename, basename.str());
144   }
145 
146   EXPECT_FALSE(CPlusPlusLanguage::ExtractContextAndIdentifier("void", context,
147                                                               basename));
148   EXPECT_FALSE(
149       CPlusPlusLanguage::ExtractContextAndIdentifier("321", context, basename));
150   EXPECT_FALSE(
151       CPlusPlusLanguage::ExtractContextAndIdentifier("", context, basename));
152   EXPECT_FALSE(CPlusPlusLanguage::ExtractContextAndIdentifier(
153       "selector:", context, basename));
154   EXPECT_FALSE(CPlusPlusLanguage::ExtractContextAndIdentifier(
155       "selector:otherField:", context, basename));
156   EXPECT_FALSE(CPlusPlusLanguage::ExtractContextAndIdentifier(
157       "abc::", context, basename));
158 }
159