Algorithms Library Toolkit
A toolkit for algorithms, especially for algorithms on formal languages
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VariablesBarSymbol.h
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1
6/*
7 * This file is part of Algorithms library toolkit.
8 * Copyright (C) 2017 Jan Travnicek (jan.travnicek@fit.cvut.cz)
9
10 * Algorithms library toolkit is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, either version 3 of the License, or
13 * (at your option) any later version.
14
15 * Algorithms library toolkit is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19
20 * You should have received a copy of the GNU General Public License
21 * along with Algorithms library toolkit. If not, see <http://www.gnu.org/licenses/>.
22 */
23
24#pragma once
25
27#include <object/Object.h>
28
29namespace alphabet {
30
36public:
41 explicit VariablesBarSymbol ( );
42
50 std::strong_ordering operator <=> ( const VariablesBarSymbol & ) const {
51 return std::strong_ordering::equal;
52 }
53
61 bool operator == ( const VariablesBarSymbol & ) const {
62 return true;
63 }
64
74
78 template < typename Base >
79 static inline Base instance ( );
80};
81
82template < typename Base >
84 if constexpr ( std::is_integral_v < Base > ) {
85 return '!';
86 } else if constexpr ( std::is_same_v < Base, std::string > ) {
87 return std::string ( 1, VariablesBarSymbol::instance < char > ( ) );
88 } else if constexpr ( std::is_same_v < Base, VariablesBarSymbol > ) {
89 return VariablesBarSymbol ( );
90 } else if constexpr ( std::is_same_v < Base, object::Object > ) {
92 } else if constexpr ( std::is_same_v < Base, common::ranked_symbol < > > ) {
93 return common::ranked_symbol < > ( VariablesBarSymbol::instance < DefaultSymbolType > ( ), 0u );
94 } else {
95 static_assert ( std::is_same_v < Base, Base >, "Unsupported type of instance" );
96 }
97}
98
99
100} /* namespace alphabet */
101
Represents variables bar symbol used in tree linearization.
Definition: VariablesBarSymbol.h:35
friend ext::ostream & operator<<(ext::ostream &out, const VariablesBarSymbol &instance)
Definition: VariablesBarSymbol.cpp:16
bool operator==(const VariablesBarSymbol &) const
Definition: VariablesBarSymbol.h:61
std::strong_ordering operator<=>(const VariablesBarSymbol &) const
Definition: VariablesBarSymbol.h:50
VariablesBarSymbol()
Creates a new instance of the symbol.
static Base instance()
Factory for the symbol construction of the symbol based on given type.
Definition: VariablesBarSymbol.h:83
Definition: ranked_symbol.hpp:20
Definition: ostream.h:14
Definition: Object.h:16
Definition: BarSymbol.cpp:12