1 // 1999-05-11 bkoz
2
3 // Copyright (C) 1999-2019 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
19
20 // 21.3.3 string capacity
21
22 #include <string>
23 #include <cstring>
24 #include <testsuite_hooks.h>
25
26 template<typename T>
27 struct A { };
28
29 template<typename T>
30 bool
operator ==(const A<T> &,const A<T> &)31 operator==(const A<T>&, const A<T>&) { return true; }
32
33 template<typename T>
34 bool
operator <(const A<T> &,const A<T> &)35 operator<(const A<T>&, const A<T>&) { return true; }
36
37 struct B { };
38
39 // char_traits specialization
40 namespace std
41 {
42 template<>
43 struct char_traits<A<B> >
44 {
45 typedef A<B> char_type;
46 // Unsigned as wint_t in unsigned.
47 typedef unsigned long int_type;
48 typedef streampos pos_type;
49 typedef streamoff off_type;
50 typedef mbstate_t state_type;
51
52 static void
assignstd::char_traits53 assign(char_type& __c1, const char_type& __c2)
54 { __c1 = __c2; }
55
56 static bool
eqstd::char_traits57 eq(const char_type& __c1, const char_type& __c2)
58 { return __c1 == __c2; }
59
60 static bool
ltstd::char_traits61 lt(const char_type& __c1, const char_type& __c2)
62 { return __c1 < __c2; }
63
64 static int
comparestd::char_traits65 compare(const char_type* __s1, const char_type* __s2, size_t __n)
66 {
67 for (size_t __i = 0; __i < __n; ++__i)
68 if (!eq(__s1[__i], __s2[__i]))
69 return lt(__s1[__i], __s2[__i]) ? -1 : 1;
70 return 0;
71 }
72
73 static size_t
lengthstd::char_traits74 length(const char_type* __s)
75 {
76 const char_type* __p = __s;
77 while (__p)
78 ++__p;
79 return (__p - __s);
80 }
81
82 static const char_type*
findstd::char_traits83 find(const char_type* __s, size_t __n, const char_type& __a)
84 {
85 for (const char_type* __p = __s; size_t(__p - __s) < __n; ++__p)
86 if (*__p == __a) return __p;
87 return 0;
88 }
89
90 static char_type*
movestd::char_traits91 move(char_type* __s1, const char_type* __s2, size_t __n)
92 { return (char_type*) memmove(__s1, __s2, __n * sizeof(char_type)); }
93
94 static char_type*
copystd::char_traits95 copy(char_type* __s1, const char_type* __s2, size_t __n)
96 { return (char_type*) memcpy(__s1, __s2, __n * sizeof(char_type)); }
97
98 static char_type*
assignstd::char_traits99 assign(char_type* __s, size_t __n, char_type __a)
100 {
101 for (char_type* __p = __s; __p < __s + __n; ++__p)
102 assign(*__p, __a);
103 return __s;
104 }
105
106 static char_type
to_char_typestd::char_traits107 to_char_type(const int_type&)
108 { return char_type(); }
109
110 static int_type
to_int_typestd::char_traits111 to_int_type(const char_type&) { return int_type(); }
112
113 static bool
eq_int_typestd::char_traits114 eq_int_type(const int_type& __c1, const int_type& __c2)
115 { return __c1 == __c2; }
116
117 static int_type
eofstd::char_traits118 eof() { return static_cast<int_type>(-1); }
119
120 static int_type
not_eofstd::char_traits121 not_eof(const int_type& __c)
122 { return eq_int_type(__c, eof()) ? int_type(0) : __c; }
123 };
124 } // namespace std
125
test01()126 void test01()
127 {
128 // non POD types : resize, capacity, reserve
129 std::basic_string< A<B> > str02;
130 typedef std::basic_string< A<B> >::size_type size_type_o;
131 size_type_o sz03;
132 size_type_o sz04;
133
134 sz03 = str02.capacity();
135 str02.reserve(100);
136 sz04 = str02.capacity();
137 VERIFY( sz04 >= sz03 );
138 VERIFY( sz04 >= 100 );
139 str02.reserve();
140 sz03 = str02.capacity();
141 #if _GLIBCXX_USE_CXX11_ABI
142 VERIFY( sz03 < 100);
143 #else
144 VERIFY( sz03 == 0 );
145 #endif
146
147 sz03 = str02.size() + 5;
148 str02.resize(sz03);
149 sz04 = str02.size();
150 VERIFY( sz03 == sz04 );
151
152 sz03 = str02.size() - 5;
153 str02.resize(sz03);
154 sz04 = str02.size();
155 VERIFY( sz03 == sz04 );
156
157 A<B> inst_obj;
158 std::basic_string<A<B> > str07(30, inst_obj);
159 std::basic_string<A<B> > str08 = str07;
160 str07 = str08 + str07;
161 VERIFY( str07.capacity() >= str07.size() );
162 VERIFY( str08.capacity() >= str08.size() );
163
164 // non-POD types: size, length, max_size, clear(), empty()
165 bool b01 = str02.empty();
166 VERIFY( b01 == true );
167 sz03 = str02.size();
168 sz04 = str02.length();
169 VERIFY( sz03 == sz04 );
170 str02.c_str();
171 sz03 = str02.size();
172 sz04 = str02.length();
173 VERIFY( sz03 == sz04 );
174
175 sz03 = str02.max_size();
176 VERIFY( sz03 >= sz04 );
177
178 sz03 = str02.size();
179 str02.clear();
180 b01 = str02.empty();
181 VERIFY( b01 == true );
182 sz04 = str02.size();
183 VERIFY( sz03 >= sz04 );
184 }
185
186 #if !__GXX_WEAK__
187 // Explicitly instantiate for systems with no COMDAT or weak support.
188 template
189 const std::basic_string< A<B> >::size_type
190 std::basic_string< A<B> >::_Rep::_S_max_size;
191
192 template
193 const A<B>
194 std::basic_string< A<B> >::_Rep::_S_terminal;
195 #endif
196
main()197 int main()
198 {
199 test01();
200 return 0;
201 }
202