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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2012-2021 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-idx.h"
#include "pt-misc.h"
#include "pt-stmt.h"
#include "pt-walk.h"
namespace octave
{
OCTAVE_NORETURN static
void
err_method_access (const std::string& from, const cdef_method& meth)
{
octave_value acc = meth.get ("Access");
std::string acc_s;
if (acc.is_string ())
acc_s = acc.string_value ();
else
acc_s = "class-restricted";
error ("%s: method '%s' has %s access and cannot be run in this context",
from.c_str (), meth.get_name ().c_str (), acc_s.c_str ());
}
void
cdef_method::cdef_method_rep::check_method (void)
{
if (is_external ())
{
if (is_dummy_method (function))
{
load_path& lp
= __get_load_path__ ("cdef_method::cdef_method_rep::check_method");
std::string name = get_name ();
std::string cls_name = dispatch_type;
std::string pack_name;
size_t pos = cls_name.rfind ('.');
if (pos != std::string::npos)
{
pack_name = cls_name.substr (0, pos);
cls_name = cls_name.substr (pos + 1);
}
std::string dir_name;
std::string file_name = lp.find_method (cls_name, name,
dir_name, pack_name);
if (! file_name.empty ())
{
octave_value ov_fcn
= load_fcn_from_file (file_name, dir_name,
dispatch_type, pack_name);
if (ov_fcn.is_defined ())
{
function = ov_fcn;
make_function_of_class (dispatch_type, function);
}
}
}
else
{
// FIXME: check out-of-date status
}
if (is_dummy_method (function))
error ("no definition found for method '%s' of class '%s'",
get_name ().c_str (), dispatch_type.c_str ());
}
}
octave_value_list
cdef_method::cdef_method_rep::execute (const octave_value_list& args,
int nargout, bool do_check_access,
const std::string& who)
{
octave_value_list retval;
if (do_check_access && ! check_access ())
err_method_access (who, wrap ());
if (get ("Abstract").bool_value ())
error ("%s: cannot execute abstract method",
get ("Name").string_value ().c_str ());
check_method ();
if (function.is_defined ())
retval = feval (function, args, nargout);
return retval;
}
octave_value_list
cdef_method::cdef_method_rep::execute (const cdef_object& obj,
const octave_value_list& args,
int nargout, bool do_check_access,
const std::string& who)
{
octave_value_list retval;
if (do_check_access && ! check_access ())
err_method_access (who, wrap ());
if (get ("Abstract").bool_value ())
error ("%s: cannot execute abstract method",
get ("Name").string_value ().c_str ());
check_method ();
if (function.is_defined ())
{
octave_value_list new_args;
new_args.resize (args.length () + 1);
new_args(0) = to_ov (obj);
for (int i = 0; i < args.length (); i++)
new_args(i+1) = args(i);
retval = feval (function, new_args, nargout);
}
return retval;
}
bool
cdef_method::cdef_method_rep::is_constructor (void) const
{
if (function.is_function())
return function.function_value ()->is_classdef_constructor ();
return false;
}
bool
cdef_method::cdef_method_rep::is_defined_in_class (const std::string &cname) const
{
return (function.is_function ()
? function.function_value ()->dispatch_class () == cname
: false);
}
std::string
cdef_method::cdef_method_rep::get_doc_string (void)
{
check_method ();
octave_function *fcn = function.function_value ();
return fcn ? fcn->doc_string () : "";
}
bool
cdef_method::cdef_method_rep::check_access (void) const
{
cdef_class cls (to_cdef (get ("DefiningClass")));
return octave::check_access (cls, get ("Access"), get_name ());
}
octave_value_list
cdef_method::cdef_method_rep::meta_subsref
(const std::string& type, const std::list<octave_value_list>& idx,
int nargout)
{
octave_value_list retval;
switch (type[0])
{
case '(':
retval = (execute (idx.front (), type.length () > 1 ? 1 : nargout, true));
break;
default:
error ("invalid meta.method indexing");
break;
}
if (type.length () > 1 && idx.size () > 1 && ! retval.empty ())
retval = retval(0).next_subsref (nargout, type, idx, 1);
return retval;
}
}
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