generator: move LR(0)-specific code to generator_lr0_t

1 files changed, 22 insertions, 0 deletions

diff --git a/src/generator_lr0.cpp b/src/generator_lr0.cpp
index cbf051c..024f5fa 100644
--- a/src/generator_lr0.cpp
+++ b/src/generator_lr0.cpp
@@ -25,3 +25,25 @@
 
 
 #include "generator_lr0.hpp"
+
+
+namespace solar {
+
+bool generator_lr0_t::has_reduce_conflict(size_t from, const symbol_t &sym) {
+	(void)sym;
+	return reductions.count(from);
+}
+
+void generator_lr0_t::add_reduction(size_t from, size_t to) {
+	if (reductions.count(from))
+		throw conflict_error("reduce/reduce conflict");
+
+	for (const symbol_t &sym : get_terminals()) {
+		if (get_shifts().count(std::make_pair(from, sym)))
+			throw conflict_error("shift/reduce conflict");
+	}
+
+	reductions.insert(std::make_pair(from, to));
+}
+
+}