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annotate libinterp/interp-core/oct-lvalue.cc @ 15195:2fc554ffbc28

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split libinterp from src * libinterp: New directory. Move all files from src directory here except Makefile.am, main.cc, main-cli.cc, mkoctfile.in.cc, mkoctfilr.in.sh, octave-config.in.cc, octave-config.in.sh. * libinterp/Makefile.am: New file, extracted from src/Makefile.am. * src/Makefile.am: Delete everything except targets and definitions needed to build and link main and utility programs. * Makefile.am (SUBDIRS): Include libinterp in the list. * autogen.sh: Run config-module.sh in libinterp/dldfcn directory, not src/dldfcn directory. * configure.ac (AC_CONFIG_SRCDIR): Use libinterp/octave.cc, not src/octave.cc. (DL_LDFLAGS, LIBOCTINTERP): Use libinterp, not src. (AC_CONFIG_FILES): Include libinterp/Makefile in the list. * find-docstring-files.sh: Look in libinterp, not src. * gui/src/Makefile.am (liboctgui_la_CPPFLAGS): Find header files in libinterp, not src.
author John W. Eaton <jwe@octave.org>
date Sat, 18 Aug 2012 16:23:39 -0400
parents src/interp-core/oct-lvalue.cc@909a2797935b
children 302157614308
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1 /*
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2
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72c96de7a403 maint: update copyright notices for 2012
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3 Copyright (C) 1996-2012 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
a3556d2adec9 [project @ 1997-05-15 22:35:37 by jwe]
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #include "error.h"
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28 #include "oct-obj.h"
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29 #include "oct-lvalue.h"
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30 #include "ov.h"
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31
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32 void
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33 octave_lvalue::assign (octave_value::assign_op op, const octave_value& rhs)
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34 {
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35 if (val)
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36 {
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37 if (idx.empty ())
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38 val->assign (op, rhs);
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39 else
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40 val->assign (op, type, idx, rhs);
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41 }
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42 }
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43
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44 void
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45 octave_lvalue::set_index (const std::string& t,
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46 const std::list<octave_value_list>& i)
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47 {
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48 if (idx.empty ())
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49 {
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50 type = t;
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51 idx = i;
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52 }
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53 else
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54 error ("invalid index expression in assignment");
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55 }
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56
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57 void
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58 octave_lvalue::do_unary_op (octave_value::unary_op op)
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59 {
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60 if (val)
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61 {
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62 if (idx.empty ())
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63 val->do_non_const_unary_op (op);
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64 else
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65 val->do_non_const_unary_op (op, type, idx);
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66 }
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67 else
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68 error ("internal: invalid operation on ~");
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69 }
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70
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71 octave_value
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72 octave_lvalue::value (void)
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73 {
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74 octave_value retval;
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75
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76 if (val)
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77 {
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78 if (idx.empty ())
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79 retval = *val;
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80 else
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81 {
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82 if (val->is_constant ())
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83 retval = val->subsref (type, idx);
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84 else
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85 {
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86 octave_value_list t = val->subsref (type, idx, 1);
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87 if (t.length () > 0)
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88 retval = t(0);
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89 }
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90 }
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91 }
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92
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93 return retval;
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94 }