diff options
Diffstat (limited to 'src/generator.cpp')
-rw-r--r-- | src/generator.cpp | 79 |
1 files changed, 61 insertions, 18 deletions
diff --git a/src/generator.cpp b/src/generator.cpp index e8fd07b..ec5d1f8 100644 --- a/src/generator.cpp +++ b/src/generator.cpp @@ -34,9 +34,9 @@ namespace solar { std::set<item_t> generator_t::get_set(const std::string &nonterm) { std::set<item_t> set; - auto entries = rules.equal_range(nonterm); + auto entries = nonterms.equal_range(nonterm); for (auto entry = entries.first; entry != entries.second; ++entry) - set.insert(entry->second); + set.insert(rules[entry->second]); return set; } @@ -63,7 +63,7 @@ void generator_t::close_set(std::set<item_t> *set) { } void generator_t::generate_itemsets() { - std::queue<std::pair<std::set<item_t>, unsigned>> queue; + std::queue<std::pair<std::set<item_t>, size_t>> queue; { std::set<item_t> set0 = get_set(""); @@ -95,11 +95,27 @@ void generator_t::generate_itemsets() { close_set(&entry.second); auto added = add_set(entry.second); - transitions.emplace(std::make_pair(cur.second, entry.first), added.first->second); + + if (entry.first.get_type() == SYMBOL_TYPE_NONTERM) + gotos.emplace(std::make_pair(cur.second, entry.first), added.first->second); + else + actions.emplace(std::make_pair(cur.second, entry.first), std::make_pair('s', added.first->second)); if (added.second) queue.push(*added.first); } + + for (const item_t &item : cur.first) { + auto it = rule_ids.find(item); + if (it != rule_ids.end()) { + //if (it->second) { + // for (const symbol_t &term : terminals) + // transitions.emplace(std::make_pair(cur.second, term), std::make_pair('r', it->second)); + //} + + actions.emplace(std::make_pair(cur.second, symbol_t::make_term("")), std::make_pair('r', it->second)); + } + } } } @@ -114,11 +130,11 @@ void generator_t::print_symbol(const symbol_t &sym) { } } -void generator_t::print_item(const item_t &item) { +void generator_t::print_item(const item_t &item, bool point) { printf("%s |=", item.get_lhs().c_str()); for (size_t i = 0; i <= item.get_rhs().size(); i++) { - if (i == item.get_point()) + if (i == item.get_point() && point) printf(" ."); if (i == item.get_rhs().size()) @@ -133,37 +149,64 @@ void generator_t::print_item(const item_t &item) { void generator_t::print_set(const std::set<item_t> &set) { for (const item_t &item : set) - print_item(item); + print_item(item, true); } -generator_t::generator_t(const std::set<item_t> &rules0) { - for (item_t rule : rules0) { - rules.emplace(rule.get_lhs(), rule); +generator_t::generator_t(const std::vector<item_t> &rules0) : rules(rules0) { + for (size_t i = 0; i < rules.size(); i++) { + item_t rule = rules[i]; + + nonterms.emplace(rule.get_lhs(), i); while (rule.has_next()) { - items.emplace(rule.get_next_symbol(), rule); + const symbol_t &sym = rule.get_next_symbol(); + items.emplace(sym, rule); + + if (sym.get_type() != SYMBOL_TYPE_NONTERM) + terminals.insert(sym); + rule.shift(); } + + rule_ids.emplace(rule, i); } generate_itemsets(); + printf("Rules:\n"); + for (size_t i = 0; i < rules.size(); i++) { + printf("(%u) ", unsigned(i)); + print_item(rules[i], false); + } + printf("\n"); + const std::set<item_t> *setlist[itemsets.size()]; for (const auto &entry : itemsets) setlist[entry.second] = &entry.first; - for (unsigned i = 0; i < itemsets.size(); i++) { - printf("Item %u:\n", i); + for (size_t i = 0; i < itemsets.size(); i++) { + printf("Item %u:\n", unsigned(i)); print_set(*setlist[i]); printf("\n"); } - printf("Transitions:\n"); - for (const auto &t : transitions) { - printf("%u ", t.first.first); - print_symbol(t.first.second); - printf(" -> %u\n", t.second); + printf("Actions:\n"); + for (const auto &a : actions) { + printf("%u ", unsigned(a.first.first)); + + if (a.second.second) { + print_symbol(a.first.second); + printf(" -> %c%u\n", a.second.first, unsigned(a.second.second)); + } + else { + printf("$ -> acc\n"); + } } + printf("\n"); + + printf("Gotos:\n"); + for (const auto &g : gotos) + printf("%u %s -> %u\n", unsigned(g.first.first), g.first.second.get_value().c_str(), unsigned(g.second)); } } |