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view libinterp/parse-tree/pt-const.cc @ 17731:f79bf671a493

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eliminate global LEXER variable * input.h, input.cc (octave_base_reader::lexer): New member variable. (octave_base_reader::octave_base_reader): Initialize lexer. (octave_base_reader::octave_base_reader (const octave_base_reader&)): Also copy pflag and lexer. (octave_base_reader::reading_fcn_file, octave_base_reader::reading_classdef_file, octave_base_reader::reading_script_file): New functions. (octave_base_reader::do_input_echo): Call reading_script file instead of using global LEXER variable. (get_user_input): Don't user global LEXER variable. Only check interactive and forced_interactive to decide whether to temporarily set forced_interactive to true. (octave_terminal_reader::octave_terminal_reader, octave_file_reader::octave_file_reader, octave_eval_string_reader::octave_eval_string_reader, octave_input_reader::octave_input_reader): New optional arg, lexer. * toplev.cc (main_loop): Don't user global LEXER variable. Eliminate unused unwind_protect frame. * lex.h, lex.ll (octave_base_lexer::cleanup): Delete unused function. (octave_lexer::octave_lexer): Pass this to input_reader initializer. * parse.h, oct-parse.in.yy (octave_base_parser::init): Delete unneded function. (octave_base_parser::octave_base_parser, octave_push_parser::init, octave_push_parser::octave_push_parser): Don't call octave_base_parser::init. (eval_string): Don't use global LEXER variable. Eliminate unused unwind_protect frame.
author John W. Eaton <jwe@octave.org>
date Tue, 22 Oct 2013 18:43:36 -0400
parents 2fc554ffbc28
children d63878346099
line wrap: on
line source

/*

Copyright (C) 1993-2012 John W. Eaton

This file is part of Octave.

Octave 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 3 of the License, or (at your
option) any later version.

Octave 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 Octave; see the file COPYING.  If not, see
<http://www.gnu.org/licenses/>.

*/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <iostream>

#include "error.h"
#include "oct-obj.h"
#include "pager.h"
#include "pt-const.h"
#include "pt-walk.h"

// We are likely to have a lot of tree_constant objects to allocate,
// so make the grow_size large.
DEFINE_OCTAVE_ALLOCATOR2 (tree_constant, 1024);

void
tree_constant::print (std::ostream& os, bool pr_as_read_syntax, bool pr_orig_text)
{
  if (pr_orig_text && ! orig_text.empty ())
    os << orig_text;
  else
    val.print (os, pr_as_read_syntax);
}

void
tree_constant::print_raw (std::ostream& os, bool pr_as_read_syntax,
                          bool pr_orig_text)
{
  if (pr_orig_text && ! orig_text.empty ())
    os << orig_text;
  else
    val.print_raw (os, pr_as_read_syntax);
}

octave_value_list
tree_constant::rvalue (int nargout)
{
  octave_value_list retval;

  if (nargout > 1)
    error ("invalid number of output arguments for constant expression");
  else
    retval = rvalue1 (nargout);

  return retval;
}

tree_expression *
tree_constant::dup (symbol_table::scope_id,
                    symbol_table::context_id) const
{
  tree_constant *new_tc
    = new tree_constant (val, orig_text, line (), column ());

  new_tc->copy_base (*this);

  return new_tc;
}

void
tree_constant::accept (tree_walker& tw)
{
  tw.visit_constant (*this);
}