Mercurial > octave-nkf
view libinterp/parse-tree/pt-jump.h @ 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/>. */ #if !defined (octave_pt_jump_h) #define octave_pt_jump_h 1 class tree_walker; #include "pt-cmd.h" #include "symtab.h" // Break. class tree_break_command : public tree_command { public: tree_break_command (int l = -1, int c = -1) : tree_command (l, c) { } ~tree_break_command (void) { } tree_command *dup (symbol_table::scope_id scope, symbol_table::context_id context) const; void accept (tree_walker& tw); static int breaking; private: // No copying! tree_break_command (const tree_break_command&); tree_break_command& operator = (const tree_break_command&); }; // Continue. class tree_continue_command : public tree_command { public: tree_continue_command (int l = -1, int c = -1) : tree_command (l, c) { } ~tree_continue_command (void) { } tree_command *dup (symbol_table::scope_id scope, symbol_table::context_id context) const; void accept (tree_walker& tw); static int continuing; private: // No copying! tree_continue_command (const tree_continue_command&); tree_continue_command& operator = (const tree_continue_command&); }; // Return. class tree_return_command : public tree_command { public: tree_return_command (int l = -1, int c = -1) : tree_command (l, c) { } ~tree_return_command (void) { } tree_command *dup (symbol_table::scope_id scope, symbol_table::context_id context) const; void accept (tree_walker& tw); static int returning; private: // No copying! tree_return_command (const tree_return_command&); tree_return_command& operator = (const tree_return_command&); }; #endif