70 lines
2 KiB
C++
70 lines
2 KiB
C++
#ifndef __TreeSitter__parse_table__
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#define __TreeSitter__parse_table__
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#include <map>
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#include <vector>
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#include <set>
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#include "rules/symbol.h"
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namespace tree_sitter {
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typedef enum {
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ParseActionTypeAccept,
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ParseActionTypeError,
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ParseActionTypeShift,
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ParseActionTypeReduce,
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} ParseActionType;
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class ParseAction {
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ParseAction(ParseActionType type, size_t state_index, rules::Symbol symbol, const std::vector<bool> &child_flags);
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public:
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static ParseAction Accept();
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static ParseAction Error();
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static ParseAction Shift(size_t state_index);
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static ParseAction Reduce(rules::Symbol symbol, const std::vector<bool> &child_flags);
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bool operator==(const ParseAction &action) const;
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bool operator<(const ParseAction &action) const;
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ParseActionType type;
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rules::Symbol symbol;
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size_t state_index;
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std::vector<bool> child_flags;
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};
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std::ostream& operator<<(std::ostream &stream, const ParseAction &item);
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}
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namespace std {
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template<>
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struct hash<tree_sitter::ParseAction> {
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size_t operator()(const tree_sitter::ParseAction &action) const {
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return (
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hash<int>()(action.type) ^
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hash<tree_sitter::rules::Symbol>()(action.symbol) ^
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hash<size_t>()(action.state_index) ^
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hash<size_t>()(action.child_flags.size()));
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}
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};
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}
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namespace tree_sitter {
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class ParseState {
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public:
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ParseState();
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std::map<rules::Symbol, std::set<ParseAction>> actions;
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std::set<rules::Symbol> expected_inputs() const;
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size_t lex_state_index;
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};
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std::ostream& operator<<(std::ostream &stream, const ParseState &state);
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class ParseTable {
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public:
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size_t add_state();
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void add_action(size_t state_index, rules::Symbol symbol, ParseAction action);
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std::vector<ParseState> states;
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std::set<rules::Symbol> symbols;
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};
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}
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#endif
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