Mercurial > octave-nkf
view libinterp/parse-tree/pt.cc @ 20623:e34692daf663
Extend parser to accept '_' in numbers.
* NEWS: Announce change.
* lex.ll: Define NUMBER to be a NUMREAL (real number) or NUMHEX (hex number).
Define NUMREAL to begin with a digit (D) followed by more digits or an '_'.
Define NUMHEX to begin with 0[xX], a hex digit (a-fA-F0-9), followed by '_' or
more hex digits.
Define EXPON to have a digit (D) followed by more digits or an '_'.
* lex.ll (octave_base_lexer::handle_number): Strip out any underscores before
processing number with sscanf.
* parser.tst: Add tests for new behavior.
author | Rik <rik@octave.org> |
---|---|
date | Mon, 05 Oct 2015 14:05:58 -0700 |
parents | 4197fc428c7d |
children |
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/* Copyright (C) 1996-2015 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 <sstream> #include <string> #include "ov-fcn.h" #include "pt.h" #include "pt-pr-code.h" // Hide the details of the string buffer so that we are less likely to // create a memory leak. std::string tree::str_print_code (void) { std::ostringstream buf; tree_print_code tpc (buf); accept (tpc); std::string retval = buf.str (); return retval; }