Mercurial > hg > octave-nkf
view libinterp/octave-value/ov-colon.h @ 19589:b39cbe9f3bb0
allow ranges to be disabled
* ov.cc, ov.h: Allow creation of range object to be disabled.
Also allow range objects to be forced, even when generally disabled.
* pt-exp.h (tree_expression::for_cmd_expr): New member variable.
(tree_expression::mark_as_for_cmd_expr,
tree_expression::is_for_cmd_expr): New functions.
* oct-parse.in.yy: Mark for command expressions.
* pt-colon.cc (tree_colon_expression::make_range): Force creation of
range if expression is a for command expression.
* basics.txi, numbers.txi: Document changes.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Mon, 08 Dec 2014 12:59:47 -0500 |
parents | bcd71a2531d3 |
children | 4197fc428c7d |
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/* Copyright (C) 1996-2013 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_ov_colon_h) #define octave_ov_colon_h 1 #include <cstdlib> #include <iosfwd> #include <string> #include "mx-base.h" #include "str-vec.h" #include "error.h" #include "ov-base.h" #include "ov-typeinfo.h" class octave_value_list; class tree_walker; // A type to represent ':' as used for indexing. class octave_magic_colon : public octave_base_value { public: octave_magic_colon (void) : octave_base_value () { } octave_magic_colon (const octave_magic_colon&) : octave_base_value () { } ~octave_magic_colon (void) { } octave_base_value *clone (void) const { return new octave_magic_colon (*this); } octave_base_value *empty_clone (void) const { return new octave_magic_colon (); } idx_vector index_vector (bool /* require_integers */ = false) const { return idx_vector (':'); } bool is_defined (void) const { return true; } bool is_constant (void) const { return true; } bool is_magic_colon (void) const { return true; } void print (std::ostream& os, bool pr_as_read_syntax = false); void print_raw (std::ostream& os, bool pr_as_read_syntax = false) const; private: DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA }; #endif