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https://github.com/YACReader/yacreader
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112 lines
2.5 KiB
C++
112 lines
2.5 KiB
C++
// end_node.hpp
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// Copyright (c) 2005-2018 Ben Hanson (http://www.benhanson.net/)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file licence_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef LEXERTL_END_NODE_HPP
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#define LEXERTL_END_NODE_HPP
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#include "node.hpp"
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namespace lexertl
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{
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namespace detail
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{
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template<typename id_type>
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class basic_end_node : public basic_node<id_type>
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{
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public:
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using node = basic_node<id_type>;
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using bool_stack = typename node::bool_stack;
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using const_node_stack = typename node::const_node_stack;
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using node_ptr_vector = typename node::node_ptr_vector;
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using node_stack = typename node::node_stack;
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using node_type = typename node::node_type;
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using node_vector = typename node::node_vector;
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basic_end_node(const id_type id_, const id_type user_id_,
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const id_type next_dfa_, const id_type push_dfa_,
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const bool pop_dfa_) :
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node(false),
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_id(id_),
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_user_id(user_id_),
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_next_dfa(next_dfa_),
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_push_dfa(push_dfa_),
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_pop_dfa(pop_dfa_),
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_followpos()
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{
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node::_firstpos.push_back(this);
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node::_lastpos.push_back(this);
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}
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virtual ~basic_end_node() override
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{
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}
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virtual node_type what_type() const override
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{
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return node::END;
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}
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virtual bool traverse(const_node_stack &/*node_stack_*/,
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bool_stack &/*perform_op_stack_*/) const override
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{
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return false;
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}
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virtual const node_vector &followpos() const override
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{
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// _followpos is always empty..!
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return _followpos;
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}
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virtual bool end_state() const override
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{
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return true;
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}
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virtual id_type id() const override
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{
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return _id;
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}
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virtual id_type user_id() const override
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{
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return _user_id;
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}
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virtual id_type next_dfa() const override
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{
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return _next_dfa;
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}
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virtual id_type push_dfa() const override
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{
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return _push_dfa;
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}
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virtual bool pop_dfa() const override
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{
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return _pop_dfa;
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}
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private:
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id_type _id;
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id_type _user_id;
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id_type _next_dfa;
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id_type _push_dfa;
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bool _pop_dfa;
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node_vector _followpos;
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virtual void copy_node(node_ptr_vector &/*node_ptr_vector_*/,
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node_stack &/*new_node_stack_*/, bool_stack &/*perform_op_stack_*/,
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bool &/*down_*/) const override
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{
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// Nothing to do, as end_nodes are not copied.
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}
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};
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}
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}
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#endif
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