92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
#ifndef COMPILER_PARSE_TABLE_H_
|
|
#define COMPILER_PARSE_TABLE_H_
|
|
|
|
#include <map>
|
|
#include <set>
|
|
#include <utility>
|
|
#include <vector>
|
|
#include "compiler/lex_table.h"
|
|
#include "compiler/rule.h"
|
|
#include "compiler/precedence_range.h"
|
|
#include "compiler/syntax_grammar.h"
|
|
|
|
namespace tree_sitter {
|
|
|
|
typedef size_t ParseStateId;
|
|
|
|
enum ParseActionType {
|
|
ParseActionTypeError,
|
|
ParseActionTypeShift,
|
|
ParseActionTypeReduce,
|
|
ParseActionTypeAccept,
|
|
ParseActionTypeRecover,
|
|
};
|
|
|
|
struct ParseAction {
|
|
ParseAction();
|
|
ParseAction(ParseActionType type, ParseStateId state_index,
|
|
rules::Symbol symbol, size_t consumed_symbol_count,
|
|
const Production *);
|
|
static ParseAction Accept();
|
|
static ParseAction Error();
|
|
static ParseAction Shift(ParseStateId state_index);
|
|
static ParseAction Recover(ParseStateId state_index);
|
|
static ParseAction Reduce(rules::Symbol symbol, size_t consumed_symbol_count,
|
|
const Production &);
|
|
static ParseAction ShiftExtra();
|
|
bool operator==(const ParseAction &) const;
|
|
bool operator<(const ParseAction &) const;
|
|
rules::Associativity associativity() const;
|
|
int precedence() const;
|
|
|
|
ParseActionType type;
|
|
bool extra;
|
|
bool fragile;
|
|
ParseStateId state_index;
|
|
rules::Symbol symbol;
|
|
size_t consumed_symbol_count;
|
|
const Production *production;
|
|
};
|
|
|
|
struct ParseTableEntry {
|
|
ParseTableEntry();
|
|
ParseTableEntry(const std::vector<ParseAction> &, bool, bool);
|
|
bool operator==(const ParseTableEntry &other) const;
|
|
inline bool operator!=(const ParseTableEntry &other) const {
|
|
return !operator==(other);
|
|
}
|
|
|
|
std::vector<ParseAction> actions;
|
|
bool reusable;
|
|
bool depends_on_lookahead;
|
|
};
|
|
|
|
struct ParseState {
|
|
ParseState();
|
|
bool operator==(const ParseState &) const;
|
|
bool merge(const ParseState &);
|
|
void each_referenced_state(std::function<void(ParseStateId *)>);
|
|
bool has_shift_action() const;
|
|
|
|
std::map<rules::Symbol, ParseTableEntry> terminal_entries;
|
|
std::map<rules::Symbol::Index, ParseStateId> nonterminal_entries;
|
|
LexStateId lex_state_id;
|
|
size_t shift_actions_signature;
|
|
};
|
|
|
|
struct ParseTableSymbolMetadata {
|
|
bool extra;
|
|
bool structural;
|
|
};
|
|
|
|
struct ParseTable {
|
|
ParseAction &add_terminal_action(ParseStateId state_id, rules::Symbol, ParseAction);
|
|
void set_nonterminal_action(ParseStateId, rules::Symbol::Index, ParseStateId);
|
|
|
|
std::vector<ParseState> states;
|
|
std::map<rules::Symbol, ParseTableSymbolMetadata> symbols;
|
|
};
|
|
|
|
} // namespace tree_sitter
|
|
|
|
#endif // COMPILER_PARSE_TABLE_H_
|