// basic_string<charT,traits,Allocator>&
// replace(size_type pos1, size_type n1, const basic_string<charT,traits,Allocator>& str,
-// size_type pos2, size_type n2);
+// size_type pos2, size_type n2=npos);
+// the "=npos" was added in C++14
#include <string>
#include <stdexcept>
}
template <class S>
+void
+test_npos(S s, typename S::size_type pos1, typename S::size_type n1,
+ S str, typename S::size_type pos2,
+ S expected)
+{
+ typename S::size_type old_size = s.size();
+ S s0 = s;
+ try
+ {
+ s.replace(pos1, n1, str, pos2);
+ assert(s.__invariants());
+ assert(pos1 <= old_size && pos2 <= str.size());
+ assert(s == expected);
+ typename S::size_type xlen = std::min(n1, old_size - pos1);
+ typename S::size_type rlen = std::min(S::npos, str.size() - pos2);
+ assert(s.size() == old_size - xlen + rlen);
+ }
+ catch (std::out_of_range&)
+ {
+ assert(pos1 > old_size || pos2 > str.size());
+ assert(s == s0);
+ }
+}
+
+
+template <class S>
void test0()
{
test(S(""), 0, 0, S(""), 0, 0, S(""));
test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
}
+template <class S>
+void test55()
+{
+ test_npos(S("abcdefghij"), 9, 1, S("12345678901234567890"), 10, S("abcdefghi1234567890"));
+ test_npos(S("abcdefghij"), 9, 1, S("12345678901234567890"), 19, S("abcdefghi0"));
+ test_npos(S("abcdefghij"), 9, 1, S("12345678901234567890"), 20, S("abcdefghi"));
+ test_npos(S("abcdefghij"), 9, 1, S("12345678901234567890"), 20, S("abcdefghi"));
+ test_npos(S("abcdefghij"), 9, 1, S("12345678901234567890"), 21, S("can't happen"));
+ test_npos(S("abcdefghij"), 9, 2, S(""), 0, S("abcdefghi"));
+ test_npos(S("abcdefghij"), 9, 2, S(""), 1, S("can't happen"));
+ test_npos(S("abcdefghij"), 9, 2, S("12345"), 0, S("abcdefghi12345"));
+ test_npos(S("abcdefghij"), 9, 2, S("12345"), 1, S("abcdefghi2345"));
+ test_npos(S("abcdefghij"), 9, 2, S("12345"), 2, S("abcdefghi345"));
+ test_npos(S("abcdefghij"), 9, 2, S("12345"), 4, S("abcdefghi5"));
+ test_npos(S("abcdefghij"), 9, 2, S("12345"), 5, S("abcdefghi"));
+ test_npos(S("abcdefghij"), 9, 2, S("12345"), 6, S("can't happen"));
+}
+
int main()
{
{
test52<S>();
test53<S>();
test54<S>();
+ test55<S>();
}
#if __cplusplus >= 201103L
{
test52<S>();
test53<S>();
test54<S>();
+ test55<S>();
}
#endif
}