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      1 //===----------------------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 // <string>
     11 
     12 // size_type find(const basic_string& str, size_type pos = 0) const;
     13 
     14 #include <string>
     15 #include <cassert>
     16 
     17 #include "min_allocator.h"
     18 
     19 template <class S>
     20 void
     21 test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
     22 {
     23     assert(s.find(str, pos) == x);
     24     if (x != S::npos)
     25         assert(pos <= x && x + str.size() <= s.size());
     26 }
     27 
     28 template <class S>
     29 void
     30 test(const S& s, const S& str, typename S::size_type x)
     31 {
     32     assert(s.find(str) == x);
     33     if (x != S::npos)
     34         assert(0 <= x && x + str.size() <= s.size());
     35 }
     36 
     37 template <class S>
     38 void test0()
     39 {
     40     test(S(""), S(""), 0, 0);
     41     test(S(""), S("abcde"), 0, S::npos);
     42     test(S(""), S("abcdeabcde"), 0, S::npos);
     43     test(S(""), S("abcdeabcdeabcdeabcde"), 0, S::npos);
     44     test(S(""), S(""), 1, S::npos);
     45     test(S(""), S("abcde"), 1, S::npos);
     46     test(S(""), S("abcdeabcde"), 1, S::npos);
     47     test(S(""), S("abcdeabcdeabcdeabcde"), 1, S::npos);
     48     test(S("abcde"), S(""), 0, 0);
     49     test(S("abcde"), S("abcde"), 0, 0);
     50     test(S("abcde"), S("abcdeabcde"), 0, S::npos);
     51     test(S("abcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
     52     test(S("abcde"), S(""), 1, 1);
     53     test(S("abcde"), S("abcde"), 1, S::npos);
     54     test(S("abcde"), S("abcdeabcde"), 1, S::npos);
     55     test(S("abcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
     56     test(S("abcde"), S(""), 2, 2);
     57     test(S("abcde"), S("abcde"), 2, S::npos);
     58     test(S("abcde"), S("abcdeabcde"), 2, S::npos);
     59     test(S("abcde"), S("abcdeabcdeabcdeabcde"), 2, S::npos);
     60     test(S("abcde"), S(""), 4, 4);
     61     test(S("abcde"), S("abcde"), 4, S::npos);
     62     test(S("abcde"), S("abcdeabcde"), 4, S::npos);
     63     test(S("abcde"), S("abcdeabcdeabcdeabcde"), 4, S::npos);
     64     test(S("abcde"), S(""), 5, 5);
     65     test(S("abcde"), S("abcde"), 5, S::npos);
     66     test(S("abcde"), S("abcdeabcde"), 5, S::npos);
     67     test(S("abcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
     68     test(S("abcde"), S(""), 6, S::npos);
     69     test(S("abcde"), S("abcde"), 6, S::npos);
     70     test(S("abcde"), S("abcdeabcde"), 6, S::npos);
     71     test(S("abcde"), S("abcdeabcdeabcdeabcde"), 6, S::npos);
     72     test(S("abcdeabcde"), S(""), 0, 0);
     73     test(S("abcdeabcde"), S("abcde"), 0, 0);
     74     test(S("abcdeabcde"), S("abcdeabcde"), 0, 0);
     75     test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
     76     test(S("abcdeabcde"), S(""), 1, 1);
     77     test(S("abcdeabcde"), S("abcde"), 1, 5);
     78     test(S("abcdeabcde"), S("abcdeabcde"), 1, S::npos);
     79     test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
     80     test(S("abcdeabcde"), S(""), 5, 5);
     81     test(S("abcdeabcde"), S("abcde"), 5, 5);
     82     test(S("abcdeabcde"), S("abcdeabcde"), 5, S::npos);
     83     test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
     84     test(S("abcdeabcde"), S(""), 9, 9);
     85     test(S("abcdeabcde"), S("abcde"), 9, S::npos);
     86     test(S("abcdeabcde"), S("abcdeabcde"), 9, S::npos);
     87     test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 9, S::npos);
     88     test(S("abcdeabcde"), S(""), 10, 10);
     89     test(S("abcdeabcde"), S("abcde"), 10, S::npos);
     90     test(S("abcdeabcde"), S("abcdeabcde"), 10, S::npos);
     91     test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, S::npos);
     92     test(S("abcdeabcde"), S(""), 11, S::npos);
     93     test(S("abcdeabcde"), S("abcde"), 11, S::npos);
     94     test(S("abcdeabcde"), S("abcdeabcde"), 11, S::npos);
     95     test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 11, S::npos);
     96     test(S("abcdeabcdeabcdeabcde"), S(""), 0, 0);
     97     test(S("abcdeabcdeabcdeabcde"), S("abcde"), 0, 0);
     98     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 0, 0);
     99     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, 0);
    100     test(S("abcdeabcdeabcdeabcde"), S(""), 1, 1);
    101     test(S("abcdeabcdeabcdeabcde"), S("abcde"), 1, 5);
    102     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 1, 5);
    103     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
    104     test(S("abcdeabcdeabcdeabcde"), S(""), 10, 10);
    105     test(S("abcdeabcdeabcdeabcde"), S("abcde"), 10, 10);
    106     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10, 10);
    107     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, S::npos);
    108     test(S("abcdeabcdeabcdeabcde"), S(""), 19, 19);
    109     test(S("abcdeabcdeabcdeabcde"), S("abcde"), 19, S::npos);
    110     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 19, S::npos);
    111     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 19, S::npos);
    112     test(S("abcdeabcdeabcdeabcde"), S(""), 20, 20);
    113     test(S("abcdeabcdeabcdeabcde"), S("abcde"), 20, S::npos);
    114     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 20, S::npos);
    115     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 20, S::npos);
    116     test(S("abcdeabcdeabcdeabcde"), S(""), 21, S::npos);
    117     test(S("abcdeabcdeabcdeabcde"), S("abcde"), 21, S::npos);
    118     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 21, S::npos);
    119     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 21, S::npos);
    120 }
    121 
    122 template <class S>
    123 void test1()
    124 {
    125     test(S(""), S(""), 0);
    126     test(S(""), S("abcde"), S::npos);
    127     test(S(""), S("abcdeabcde"), S::npos);
    128     test(S(""), S("abcdeabcdeabcdeabcde"), S::npos);
    129     test(S("abcde"), S(""), 0);
    130     test(S("abcde"), S("abcde"), 0);
    131     test(S("abcde"), S("abcdeabcde"), S::npos);
    132     test(S("abcde"), S("abcdeabcdeabcdeabcde"), S::npos);
    133     test(S("abcdeabcde"), S(""), 0);
    134     test(S("abcdeabcde"), S("abcde"), 0);
    135     test(S("abcdeabcde"), S("abcdeabcde"), 0);
    136     test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), S::npos);
    137     test(S("abcdeabcdeabcdeabcde"), S(""), 0);
    138     test(S("abcdeabcdeabcdeabcde"), S("abcde"), 0);
    139     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 0);
    140     test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0);
    141 }
    142 
    143 int main()
    144 {
    145     {
    146     typedef std::string S;
    147     test0<S>();
    148     test1<S>();
    149     }
    150 #if __cplusplus >= 201103L
    151     {
    152     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
    153     test0<S>();
    154     test1<S>();
    155     }
    156 #endif
    157 }
    158