Mercurial > octave
view libinterp/octave-value/cdef-property.cc @ 30564:796f54d4ddbf stable
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2021.
In all .txi and .texi files except gpl.txi and gpl.texi in the
doc/liboctave and doc/interpreter directories, change the copyright
to "Octave Project Developers", the same as used for other source
files. Update copyright notices for 2022 (not done since 2019). For
gpl.txi and gpl.texi, change the copyright notice to be "Free Software
Foundation, Inc." and leave the date at 2007 only because this file
only contains the text of the GPL, not anything created by the Octave
Project Developers.
Add Paul Thomas to contributors.in.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 28 Dec 2021 18:22:40 -0500 |
parents | aef9c5caedcd |
children | 670a0d878af1 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2012-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // 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 // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <algorithm> #include <iomanip> #include "cdef-class.h" #include "cdef-manager.h" #include "cdef-utils.h" #include "errwarn.h" #include "interpreter-private.h" #include "interpreter.h" #include "load-path.h" #include "ov-builtin.h" #include "ov-classdef.h" #include "ov-fcn-handle.h" #include "ov-usr-fcn.h" #include "parse.h" #include "pt-assign.h" #include "pt-classdef.h" #include "pt-eval.h" #include "pt-idx.h" #include "pt-misc.h" #include "pt-stmt.h" #include "pt-walk.h" namespace octave { static bool is_method_executing (const octave_value& ov, const cdef_object& obj) { tree_evaluator& tw = __get_evaluator__ ("is_method_executing"); octave_function *stack_fcn = tw.current_function (); octave_function *method_fcn = ov.function_value (true); // Does the top of the call stack match our target function? if (stack_fcn && stack_fcn == method_fcn) { octave_user_function *uf = method_fcn->user_function_value (true); // We can only check the context object for user-function (not builtin), // where we have access to the parameters (arguments and return values). // That's ok as there's no need to call this function for builtin // methods. if (uf) { // At this point, the method is executing, but we still need to // check the context object for which the method is executing. For // methods, it's the first argument of the function; for ctors, it // is the first return value. tree_parameter_list *pl = uf->is_classdef_constructor () ? uf->return_list () : uf->parameter_list (); if (pl && pl->size () > 0) { tree_decl_elt *elt = pl->front (); octave_value arg0 = tw.evaluate (elt); if (arg0.is_defined () && arg0.type_name () == "object") { cdef_object arg0_obj = to_cdef (arg0); return obj.is (arg0_obj); } } } } return false; } octave_value cdef_property::cdef_property_rep::get_value (const cdef_object& obj, bool do_check_access, const std::string& who) const { octave_value retval; if (do_check_access && ! check_get_access ()) err_property_access (who, false); if (! obj.is_constructed ()) { cdef_class cls (to_cdef (get ("DefiningClass"))); if (! obj.is_partially_constructed_for (cls)) error ("cannot reference properties of class '%s' for non-constructed object", cls.get_name ().c_str ()); } octave_value get_fcn = get ("GetMethod"); // FIXME: should check whether we're already in get accessor method if (get_fcn.isempty () || is_method_executing (get_fcn, obj)) retval = obj.get (get ("Name").string_value ()); else { octave_value_list args; args(0) = to_ov (obj); args = feval (get_fcn, args, 1); retval = args(0); } return retval; } octave_value cdef_property::cdef_property_rep::get_value (bool do_check_access, const std::string& who) const { if (do_check_access && ! check_get_access ()) err_property_access (who, false); return get ("DefaultValue"); } bool cdef_property::cdef_property_rep::is_recursive_set (const cdef_object& /* obj */) const { // FIXME: implement return false; } OCTAVE_NORETURN void cdef_property::cdef_property_rep::err_property_access (const std::string& from, bool is_set) const { octave_value acc = get (is_set ? "SetAccess" : "GetAccess"); std::string acc_s; if (acc.is_string ()) acc_s = acc.string_value (); else acc_s = "class-restricted"; if (is_set) error ("%s: property '%s' has %s access and cannot be set in this context", from.c_str (), get_name ().c_str (), acc_s.c_str ()); else error ("%s: property '%s' has %s access and cannot be obtained in this context", from.c_str (), get_name ().c_str (), acc_s.c_str ()); } void cdef_property::cdef_property_rep::set_value (cdef_object& obj, const octave_value& val, bool do_check_access, const std::string& who) { if (do_check_access && ! check_set_access ()) err_property_access (who, true); if (! obj.is_constructed ()) { cdef_class cls (to_cdef (get ("DefiningClass"))); if (! obj.is_partially_constructed_for (cls)) error ("cannot reference properties of class '%s' for non-constructed object", cls.get_name ().c_str ()); } octave_value set_fcn = get ("SetMethod"); if (set_fcn.isempty () || is_method_executing (set_fcn, obj)) obj.put (get ("Name").string_value (), val); else { octave_value_list args; args(0) = to_ov (obj); args(1) = val; if (obj.is_handle_object ()) feval (set_fcn, args, 0); else { args = feval (set_fcn, args, 1); if (args.length () > 0 && args(0).is_defined ()) { if (args(0).is_classdef_object ()) { cdef_object new_obj = to_cdef (args(0)); obj = new_obj; } else ::warning ("set-method of property '%s' returned a non-classdef object", get_name ().c_str ()); } } } } bool cdef_property::cdef_property_rep::check_get_access (void) const { cdef_class cls (to_cdef (get ("DefiningClass"))); return check_access (cls, get ("GetAccess"), "", get_name (), false); return false; } bool cdef_property::cdef_property_rep::check_set_access (void) const { cdef_class cls (to_cdef (get ("DefiningClass"))); return check_access (cls, get ("SetAccess"), "", get_name (), true); return false; } }