Mercurial > octave-nkf
view libinterp/octave-value/ov-null-mat.h @ 15870:2b6fe094e615 classdef
Implement embryonic value-class semantic.
* libinterp/octave-value/ov-classdef.h (cdef_object_rep::set_class): Delete
method.
(cdef_object_rep::get, cdef_object_rep::put): Copy implementation from
handle_cdef_object.
(cdef_object_rep::subsref, cdef_oject_rep::subsasgn): Move implementation to
source file.
(cdef_object_rep::map): Copy field from handle_cdef_object.
(handle_cdef_rep::get, handle_cdef_rep::put): Move implementation to
cdef_object_rep.
(handle_cdef_rep::map): Move field to cdef_object_rep.
(cdef_object_rep::cdef_object_rep, cdef_object_rep::operator=): Private
declaration to disable copying.
(handle_cdef_rep::handle_cdef_rep, handle_cdef_rep::operator=): Likewise.
(class value_cdef_object): New class for value-class semantic.
* libinterp/octave-value/ov-classdef.cc (cdef_object_rep::subsref,
cdef_object_rep::subsasgn): Copy implementation from handle_cdef_object.
(cdef_class_rep::run_constructor): Do not try to assign constructor result in
case of error.
(cdef_class_rep::construct): Create value_cdef_object object for value classes.
author | Michael Goffioul <michael.goffioul@gmail.com> |
---|---|
date | Tue, 01 Jan 2013 19:54:15 -0500 |
parents | 2fc554ffbc28 |
children | d63878346099 |
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/* Copyright (C) 2008-2012 Jaroslav Hajek 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_null_matrix_h) #define octave_null_matrix_h 1 #include "ov.h" #include "ov-re-mat.h" #include "ov-str-mat.h" // Design rationale: // The constructors are hidden. There is only one null matrix (or null string) object, // that can have shallow copies. Cloning the object returns just a normal empty matrix, // so all the shallow copies are, in fact, read-only. This conveniently ensures that any // attempt to fiddle with the null matrix destroys its special status. // The special [] value. class OCTINTERP_API octave_null_matrix : public octave_matrix { octave_null_matrix (void) : octave_matrix () { } public: static const octave_value instance; bool is_null_value (void) const { return true; } type_conv_info numeric_conversion_function (void) const; private: DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA }; // The special "" value class OCTINTERP_API octave_null_str : public octave_char_matrix_str { octave_null_str (void) : octave_char_matrix_str () { } public: static const octave_value instance; bool is_null_value (void) const { return true; } type_conv_info numeric_conversion_function (void) const; private: DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA }; // The special '' value class OCTINTERP_API octave_null_sq_str : public octave_char_matrix_sq_str { octave_null_sq_str (void) : octave_char_matrix_sq_str () { } public: static const octave_value instance; bool is_null_value (void) const { return true; } type_conv_info numeric_conversion_function (void) const; private: DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA }; #endif