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// 1999-06-03 bkoz

// Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005

// Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 2, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// 21.1.1 Characher traits requirements

#include <string>

#include <testsuite_hooks.h>

void test02(void)

{

  bool test __attribute__((unused)) = true;

  const std::wstring str_01(L"zuma beach");

  const std::wstring str_02(L"montara and ocean beach");

  // 21.1.1 character traits requirements

  // Key for decoding what function signatures really mean:

  // X        == char_traits<_CharT>

  // [c,d]    == _CharT

  // [p,q]    == const _CharT*

  // s        == _CharT*

  // [n,i,j]  == size_t

  // f        == X::int_type

  // pos      == X::pos_type

  // state    == X::state_type

  // void X::assign(wchar_t c, wchar_t d)

  // assigns c = d;

  wchar_t c1 = L'z';

  wchar_t c2 = L'u';

  VERIFY( c1 != c2 );

  std::char_traits<wchar_t>::assign(c1,c2);

  VERIFY( c1 == L'u' );

  // char* X::move(char* s, const char* p, size_t n)

  // for each i in [0,n) performs X::assign(s[i], p[i]). Copies

  // correctly even where p is in [s, s + n), and yields s.   

  wchar_t array1[] = {L'z', L'u', L'm', L'a', L' ', L'b', L'e', L'a', L'c', L'h',  0};

  const wchar_t str_lit1[] = L"montara and ocean beach";

  const wchar_t str_lit2[] = L"boracay, philippines";

  const int len1 = sizeof(str_lit1)/sizeof(wchar_t);

  const int len2 = sizeof(str_lit2)/sizeof(wchar_t);

  wchar_t array2[len1 + len2 - 1]; // two terminating chars

  std::char_traits<wchar_t>::copy(array2, str_lit2, len2);

  VERIFY( str_lit1[0] == 'm' );

  c1 = array2[0];

  c2 = str_lit1[0];

  wchar_t c3 = array2[1];

  wchar_t c4 = str_lit1[1];

  std::char_traits<wchar_t>::move(array2, str_lit1, 0);

  VERIFY( array2[0] == c1 );

  VERIFY( str_lit1[0] == c2 );

  std::char_traits<wchar_t>::move(array2, str_lit1, 1);

  VERIFY( array2[0] == c2 );

  VERIFY( str_lit1[0] == c2 );

  VERIFY( array2[1] == c3 );

  VERIFY( str_lit1[1] == c4 );

  std::char_traits<wchar_t>::move(array2, str_lit1, 2);

  VERIFY( array2[0] == c2 );

  VERIFY( str_lit1[0] == c2 );

  VERIFY( array2[1] == c4 );

  VERIFY( str_lit1[1] == c4 );

  wchar_t* pc1 = array1 + 1;

  c1 = pc1[0];

  c2 = array1[0];

  VERIFY( c1 != c2 );

  wchar_t* pc2 = std::char_traits<wchar_t>::move(array1, pc1, 0);

  c3 = pc1[0];

  c4 = array1[0];

  VERIFY( c1 == c3 );

  VERIFY( c2 == c4 );

  VERIFY( pc2 == array1 );

  c1 = pc1[0];

  c2 = array1[0];

  wchar_t* pc3 = pc1;

  pc2 = std::char_traits<wchar_t>::move(array1, pc1, 10);

  c3 = pc1[0];

  c4 = array1[0];

  VERIFY( c1 != c3 ); // underlying wchar_t array changed.

  VERIFY( c4 != c3 );

  VERIFY( pc2 == array1 );

  VERIFY( pc3 == pc1 ); // but pointers o-tay

  c1 = *(str_01.data());

  c2 = array1[0];

  VERIFY( c1 != c2 );

}

int main()

{

  test02();

  return 0;

}