94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
#ifndef COMPILER_PARSE_TABLE_H_
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#define COMPILER_PARSE_TABLE_H_
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#include <map>
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#include <set>
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#include <utility>
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#include <vector>
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#include "compiler/lex_table.h"
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#include "compiler/rules/symbol.h"
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namespace tree_sitter {
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typedef uint64_t ParseStateId;
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typedef enum {
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ParseActionTypeError,
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ParseActionTypeShift,
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ParseActionTypeShiftExtra,
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ParseActionTypeReduce,
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ParseActionTypeReduceExtra,
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ParseActionTypeAccept,
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} ParseActionType;
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class ParseAction {
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ParseAction(ParseActionType type, ParseStateId state_index,
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rules::Symbol symbol, size_t consumed_symbol_count,
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std::set<int> precedence_values, int production_id);
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public:
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ParseAction();
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static ParseAction Accept();
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static ParseAction Error();
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static ParseAction Shift(ParseStateId state_index,
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std::set<int> precedence_values);
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static ParseAction Reduce(rules::Symbol symbol, size_t consumed_symbol_count,
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int precedence, int production_id);
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static ParseAction ShiftExtra();
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static ParseAction ReduceExtra(rules::Symbol symbol);
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bool operator==(const ParseAction &) const;
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bool operator<(const ParseAction &) const;
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ParseActionType type;
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rules::Symbol symbol;
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ParseStateId state_index;
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size_t consumed_symbol_count;
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std::set<int> precedence_values;
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int production_id;
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};
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std::ostream &operator<<(std::ostream &stream, const ParseAction &item);
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} // namespace tree_sitter
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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 (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.consumed_symbol_count) ^
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hash<size_t>()(action.production_id));
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}
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};
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} // namespace std
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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, ParseAction> actions;
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std::set<rules::Symbol> expected_inputs() const;
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LexStateId lex_state_id;
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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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ParseStateId add_state();
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void add_action(ParseStateId state_id, rules::Symbol symbol,
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ParseAction action);
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std::vector<ParseState> states;
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std::set<rules::Symbol> symbols;
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std::set<int> fragile_production_ids;
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};
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} // namespace tree_sitter
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#endif // COMPILER_PARSE_TABLE_H_
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