Add support for destructors

1 files changed, 12 insertions, 1 deletions

diff --git a/src/output_lr0.cpp b/src/output_lr0.cpp
index 62c5966..5d0c882 100644
--- a/src/output_lr0.cpp
+++ b/src/output_lr0.cpp
@@ -63,7 +63,7 @@ void output_lr0_t::emit_state_reduce(const item_t &item, int rule_id) {
 
 		std::fprintf(source_file, "\t\t\t");
 		if (!type.empty())
-			std::fprintf(source_file, "parser->stack[parser->top].value.symbol_%s = ", item.get_lhs().c_str());
+			std::fprintf(source_file, "result.symbol_%s = ", item.get_lhs().c_str());
 		std::fprintf(source_file, "%sreduce_%i(", prefix(), rule_id);
 
 		bool empty = true;
@@ -90,6 +90,17 @@ void output_lr0_t::emit_state_reduce(const item_t &item, int rule_id) {
 		}
 
 		std::fprintf(source_file, ");\n");
+
+		for (unsigned i = 0; i < rhs.size(); i++) {
+			auto it = generator->get_grammar().destructors.find(rhs[i]);
+			if (it == generator->get_grammar().destructors.end())
+				continue;
+
+			std::fprintf(source_file, "\t\t\t%s(parser->stack[parser->top + %u].value.%s);\n", it->second.c_str(), i, symbol_values[rhs[i]].c_str());
+		}
+
+		if (!type.empty())
+			std::fprintf(source_file, "\t\t\tparser->stack[parser->top].value.symbol_%s = result.symbol_%s;\n", item.get_lhs().c_str(), item.get_lhs().c_str());
 	}
 
 	emit_gotos(item.get_lhs());