cxx11-user-defined-literals.cpp revision b453ad3214d00acc51c9aa702c76c58354d84b84 
1// RUN: %clang_cc1 -std=c++11 -verify %s -fms-extensions -triple x86_64-apple-darwin9.0.0
2
3using size_t = decltype(sizeof(int));
4enum class LitKind {
5  Char, WideChar, Char16, Char32,
6  CharStr, WideStr, Char16Str, Char32Str,
7  Integer, Floating
8};
9constexpr LitKind operator"" _kind(char p) { return LitKind::Char; }
10constexpr LitKind operator"" _kind(wchar_t p) { return LitKind::WideChar; }
11constexpr LitKind operator"" _kind(char16_t p) { return LitKind::Char16; }
12constexpr LitKind operator"" _kind(char32_t p) { return LitKind::Char32; }
13constexpr LitKind operator"" _kind(const char *p, size_t n) { return LitKind::CharStr; }
14constexpr LitKind operator"" _kind(const wchar_t *p, size_t n) { return LitKind::WideStr; }
15constexpr LitKind operator"" _kind(const char16_t *p, size_t n) { return LitKind::Char16Str; }
16constexpr LitKind operator"" _kind(const char32_t *p, size_t n) { return LitKind::Char32Str; }
17constexpr LitKind operator"" _kind(unsigned long long n) { return LitKind::Integer; }
18constexpr LitKind operator"" _kind(long double n) { return LitKind::Floating; }
19
20static_assert('x'_kind == LitKind::Char, "");
21static_assert(L'x'_kind == LitKind::WideChar, "");
22static_assert(u'x'_kind == LitKind::Char16, "");
23static_assert(U'x'_kind == LitKind::Char32, "");
24static_assert("foo"_kind == LitKind::CharStr, "");
25static_assert(u8"foo"_kind == LitKind::CharStr, "");
26static_assert(L"foo"_kind == LitKind::WideStr, "");
27static_assert(u"foo"_kind == LitKind::Char16Str, "");
28static_assert(U"foo"_kind == LitKind::Char32Str, "");
29static_assert(194_kind == LitKind::Integer, "");
30static_assert(0377_kind == LitKind::Integer, "");
31static_assert(0x5ffc_kind == LitKind::Integer, "");
32static_assert(.5954_kind == LitKind::Floating, "");
33static_assert(1._kind == LitKind::Floating, "");
34static_assert(1.e-2_kind == LitKind::Floating, "");
35static_assert(4e6_kind == LitKind::Floating, "");
36