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comparison src/ov-mex-fcn.cc @ 5864:e884ab4f29ee

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[project @ 2006-06-22 00:57:27 by jwe]
author jwe
date Thu, 22 Jun 2006 00:57:28 +0000
parents
children c9f0839c583f
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5863:4c16f3104aa5 5864:e884ab4f29ee
1 /*
2
3 Copyright (C) 1996, 1997 John W. Eaton
4
5 This file is part of Octave.
6
7 Octave is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
10 later version.
11
12 Octave is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with Octave; see the file COPYING. If not, write to the Free
19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
20 02110-1301, USA.
21
22 */
23
24 #ifdef HAVE_CONFIG_H
25 #include <config.h>
26 #endif
27
28 #include "oct-shlib.h"
29
30 #include <defaults.h>
31 #include "dynamic-ld.h"
32 #include "error.h"
33 #include "oct-obj.h"
34 #include "ov-mex-fcn.h"
35 #include "ov.h"
36 #include "toplev.h"
37 #include "unwind-prot.h"
38
39 DEFINE_OCTAVE_ALLOCATOR (octave_mex_function);
40
41 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_mex_function,
42 "mex function", "mex function");
43
44 octave_mex_function::octave_mex_function
45 (void *fptr, bool fmex, const octave_shlib& shl,
46 const std::string& nm)
47 : octave_function (nm), mex_fcn_ptr (fptr), have_fmex (fmex), sh_lib (shl)
48 {
49 mark_fcn_file_up_to_date (time_parsed ());
50
51 std::string file_name = fcn_file_name ();
52
53 system_fcn_file
54 = (! file_name.empty ()
55 && Voct_file_dir == file_name.substr (0, Voct_file_dir.length ()));
56 }
57
58 octave_mex_function::~octave_mex_function (void)
59 {
60 octave_dynamic_loader::remove (my_name, sh_lib);
61 }
62
63 std::string
64 octave_mex_function::fcn_file_name (void) const
65 {
66 return sh_lib.file_name ();
67 }
68
69 octave_time
70 octave_mex_function::time_parsed (void) const
71 {
72 return sh_lib.time_loaded ();
73 }
74
75 octave_value_list
76 octave_mex_function::subsref (const std::string& type,
77 const std::list<octave_value_list>& idx,
78 int nargout)
79 {
80 octave_value_list retval;
81
82 switch (type[0])
83 {
84 case '(':
85 {
86 int tmp_nargout = (type.length () > 1 && nargout == 0) ? 1 : nargout;
87
88 retval = do_multi_index_op (tmp_nargout, idx.front ());
89 }
90 break;
91
92 case '{':
93 case '.':
94 {
95 std::string nm = type_name ();
96 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
97 }
98 break;
99
100 default:
101 panic_impossible ();
102 }
103
104 // FIXME -- perhaps there should be an
105 // octave_value_list::next_subsref member function? See also
106 // octave_user_function::subsref.
107 //
108 // FIXME -- Note that if a function call returns multiple
109 // values, and there is further indexing to perform, then we are
110 // ignoring all but the first value. Is this really what we want to
111 // do? If it is not, then what should happen for stat("file").size,
112 // for exmaple?
113
114 if (idx.size () > 1)
115 retval = retval(0).next_subsref (nargout, type, idx);
116
117 return retval;
118 }
119
120 extern octave_value_list
121 C_mex (void *f, const octave_value_list& args, int nargout);
122
123 extern octave_value_list
124 Fortran_mex (void *f, const octave_value_list& args, int nargout);
125
126 octave_value_list
127 octave_mex_function::do_multi_index_op (int nargout,
128 const octave_value_list& args)
129 {
130 octave_value_list retval;
131
132 if (error_state)
133 return retval;
134
135 if (args.has_magic_colon ())
136 ::error ("invalid use of colon in function argument list");
137 else
138 {
139 unwind_protect::begin_frame ("mex_func_eval");
140
141 octave_call_stack::push (this);
142
143 unwind_protect::add (octave_call_stack::unwind_pop, 0);
144
145 retval = have_fmex
146 ? Fortran_mex (mex_fcn_ptr, args, nargout)
147 : C_mex (mex_fcn_ptr, args, nargout);
148
149 unwind_protect::run_frame ("mex_func_eval");
150 }
151
152 return retval;
153 }
154
155 /*
156 ;;; Local Variables: ***
157 ;;; mode: C++ ***
158 ;;; End: ***
159 */