Mercurial > octave
view libinterp/parse-tree/oct-lvalue.cc @ 28207:ab60e78d235c
maint: merge stable to default.
author | Rik <rik@octave.org> |
---|---|
date | Sat, 11 Apr 2020 16:06:19 -0700 |
parents | 56c209ff0a08 |
children | 9a3deb17b4ea |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1996-2020 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 "error.h" #include "ovl.h" #include "oct-lvalue.h" #include "ov.h" namespace octave { bool octave_lvalue::is_defined (void) const { return ! is_black_hole () && m_frame.is_defined (m_sym); } bool octave_lvalue::is_undefined (void) const { return ! is_defined (); } void octave_lvalue::define (const octave_value& v) { m_frame.assign (m_sym, v); } void octave_lvalue::assign (octave_value::assign_op op, const octave_value& rhs) { if (! is_black_hole ()) m_frame.assign (op, m_sym, m_type, m_idx, rhs); } void octave_lvalue::set_index (const std::string& t, const std::list<octave_value_list>& i) { if (! m_idx.empty ()) error ("invalid index expression in assignment"); m_type = t; m_idx = i; } bool octave_lvalue::index_is_empty (void) const { bool retval = false; if (m_idx.size () == 1) { octave_value_list tmp = m_idx.front (); retval = (tmp.length () == 1 && tmp(0).isempty ()); } return retval; } bool octave_lvalue::index_is_colon (void) const { bool retval = false; if (m_idx.size () == 1) { octave_value_list tmp = m_idx.front (); retval = (tmp.length () == 1 && tmp(0).is_magic_colon ()); } return retval; } void octave_lvalue::do_unary_op (octave_value::unary_op op) { if (! is_black_hole ()) m_frame.do_non_const_unary_op (op, m_sym, m_type, m_idx); } octave_value octave_lvalue::value (void) const { return (is_black_hole () ? octave_value () : m_frame.value (m_sym, m_type, m_idx)); } }