Mercurial > octave
view libinterp/parse-tree/oct-lvalue.h @ 26376:00f796120a6d stable
maint: Update copyright dates in all source files.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 02 Jan 2019 16:32:43 -0500 |
parents | 6652d3823428 |
children | cf9e10ce3351 |
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/* Copyright (C) 1996-2019 John W. Eaton 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 (octave_oct_lvalue_h) #define octave_oct_lvalue_h 1 #include "octave-config.h" #include <string> #include "ovl.h" #include "symrec.h" namespace octave { class octave_lvalue { public: octave_lvalue (void) : m_sym (), m_context (0), m_black_hole (false), m_type (), m_idx (), m_nel (1) { } octave_lvalue (const symbol_record& sr, symbol_record::context_id context) : m_sym (sr), m_context (context), m_black_hole (false), m_type (), m_idx (), m_nel (1) { } octave_lvalue (const octave_lvalue&) = default; octave_lvalue& operator = (const octave_lvalue&) = default; ~octave_lvalue (void) = default; bool is_black_hole (void) const { return m_black_hole; } void mark_black_hole (void) { m_black_hole = true; } bool is_defined (void) const { return ! is_black_hole () && m_sym.is_defined (m_context); } bool is_undefined (void) const { return is_black_hole () || m_sym.is_undefined (m_context); } bool isstruct (void) const { return value().isstruct (); } void define (const octave_value& v) { m_sym.assign (v, m_context); } void assign (octave_value::assign_op, const octave_value&); void numel (octave_idx_type n) { m_nel = n; } octave_idx_type numel (void) const { return m_nel; } void set_index (const std::string& t, const std::list<octave_value_list>& i); void clear_index (void) { m_type = ""; m_idx.clear (); } std::string index_type (void) const { return m_type; } bool index_is_empty (void) const; void do_unary_op (octave_value::unary_op op); octave_value value (void) const; private: symbol_record m_sym; symbol_record::context_id m_context; bool m_black_hole; std::string m_type; std::list<octave_value_list> m_idx; octave_idx_type m_nel; }; } #endif