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Compute parse state group signature based on the item set

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This commit is contained in:
Max Brunsfeld 2016-11-16 10:21:30 -08:00
parent 42d37656ea
commit 6cfd009503
5 changed files with 29 additions and 76 deletions
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36
src/compiler/parse_table.h
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@ -5,7 +5,6 @@
#include <set>
#include <utility>
#include <vector>
#include "compiler/util/hash_combine.h"
#include "compiler/lex_table.h"
#include "compiler/rules/symbol.h"
#include "compiler/rules/metadata.h"
@ -76,7 +75,6 @@ class ParseState {
bool merge(const ParseState &);
void each_referenced_state(std::function<void(ParseStateId *)>);
bool has_shift_action() const;
void compute_shift_actions_signature();
std::map<rules::Symbol::Index, ParseTableEntry> terminal_entries;
std::map<rules::Symbol::Index, ParseStateId> nonterminal_entries;
@ -106,38 +104,4 @@ class ParseTable {
} // namespace tree_sitter
namespace std {
using tree_sitter::util::hash_combine;
template <>
struct hash<tree_sitter::ParseAction> {
size_t operator()(const tree_sitter::ParseAction &action) const {
size_t result = 0;
hash_combine<int>(&result, action.type);
hash_combine(&result, action.extra);
hash_combine(&result, action.fragile);
hash_combine(&result, action.symbol);
hash_combine(&result, action.state_index);
hash_combine(&result, action.consumed_symbol_count);
return result;
}
};
template <>
struct hash<tree_sitter::ParseTableEntry> {
size_t operator()(const tree_sitter::ParseTableEntry &entry) const {
size_t result = 0;
hash_combine(&result, entry.actions.size());
for (const tree_sitter::ParseAction &action : entry.actions) {
hash_combine(&result, action);
}
hash_combine(&result, entry.reusable);
hash_combine(&result, entry.depends_on_lookahead);
return result;
}
};
}
#endif // COMPILER_PARSE_TABLE_H_