// -*- C++ -*-
//  Boost general library 'format'   ---------------------------
//  See http://www.boost.org for updates, documentation, and revision history.

//  (C) Samuel Krempp 2001
//                  krempp@crans.ens-cachan.fr
//  Permission to copy, use, modify, sell and
//  distribute this software is granted provided this copyright notice appears
//  in all copies. This software is provided "as is" without express or implied
//  warranty, and with no claim as to its suitability for any purpose.

// ideas taken from Rüdiger Loos's format class
// and Karl Nelson's ofstream

// ----------------------------------------------------------------------------
// internals.hpp :  internal structs. included by format.hpp
//                              stream_format_state, and format_item
// ----------------------------------------------------------------------------


#ifndef BOOST_FORMAT_INTERNALS_HPP
#define BOOST_FORMAT_INTERNALS_HPP


#include <string>
#include <sstream>

namespace boost {
namespace io {
namespace detail {


// --------------
// set of params that define the format state of a stream

struct stream_format_state 
{
  typedef std::ios   basic_ios;

  std::</td></tr></table>
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<tr><td><span title='2018-01-19 23:47:42 +0800'>2018-01-19</span></td><td><a href='/tracifyjs/commit/test/compress/issue-1443.js?h=templatifyjs&amp;id=069df27bf18247a3e2f1d1a4abd0ee4fe28ef0ce'>enable `unsafe` for `test/ufuzz.js` (#2819)</a><span class='msg-avail'>...<span class='msg-tooltip'>- introduce `unsafe_undefined`
- safer `.toString()` compression

Miscellaneous
- rename `unsafe_Function`</span></span></td><td>Alex Lam S.L</td></tr>
<tr><td><span title='2017-03-05 13:09:27 +0800'>2017-03-05</span></td><td><a href='/tracifyjs/commit/test/compress/issue-1443.js?h=templatifyjs&amp;id=b33e7f88e60f886ee3403c82ac2e3fb40caa698f'>improve `unsafe` on undefined (#1548)</a><span class='msg-avail'>...<span class='msg-tooltip'>`unsafe` turns undefined keyword into a variable of the same name if found, but that interferes with other related optimisations.

Keep track of such transformations to ensure zero information loss in the process.</span></span></td><td>Alex Lam S.L</td></tr>
<tr><td><span title='2017-02-18 18:58:23 +0800'>2017-02-18</span></td><td><a href='/tracifyjs/commit/test/compress/issue-1443.js?h=templatifyjs&amp;id=11676f9d72e667ea14ce380ed448da948e79f85e'>fix crash in unsafe replacement of undefined</a><span class='msg-avail'>...<span class='msg-tooltip'>remove extraneous call to AST_SymbolRef.reference()

closes #1443
</span></span></td><td>alexlamsl</td></tr>
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ces on several state params.
{
  if(pad_scheme_ & zeropad) 
  {
    if(ref_state_.flags_ & std::ios::left) 
    {
      pad_scheme_ = pad_scheme_ & (~zeropad); // ignore zeropad in left alignment
    }
    else 
    { 
      ref_state_.fill_='0'; 
      ref_state_.flags_ |= std::ios::internal;
    }
  }
  state_ = ref_state_;
}


} } } // namespaces boost :: io :: detail


#endif // BOOST_FORMAT_INTERNALS_HPP