54 lines
1.0 KiB
C
54 lines
1.0 KiB
C
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//
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// Created by Administrator on 2021/4/30.
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//
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#ifndef SYNTAXPARSER_ITEM_H
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#define SYNTAXPARSER_ITEM_H
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#include <stdexcept>
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#include <Production.h>
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// <20><>
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class Item{
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// <20><>Ӧ<EFBFBD>IJ<EFBFBD><C4B2><EFBFBD>ʽ
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const Production* const production;
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// <20><><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>
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int dot_index = 0;
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const int terminator = 0;
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public:
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const bool generated = false;
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explicit Item(const Production *p_pdt, int m_terminator, bool m_generated = false)
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: production(p_pdt), terminator(m_terminator), generated(m_generated) {}
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void set_dot_index(int m_dot_index);
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[[nodiscard]] int get_dot_index() const {
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return dot_index;
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}
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[[nodiscard]] size_t get_right_size() {
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return production->right.size();
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}
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int get_dot_next_symbol() const;
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int get_dot_next_i_symbol(int i) const;
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[[nodiscard]] int get_terminator() const {
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return terminator;
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}
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[[nodiscard]] const Production *get_production() const {
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return production;
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}
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};
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#endif //SYNTAXPARSER_ITEM_H
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