Added additional functionality and cleanups in sigtools.h and celltypes.h

kernel/celltypes.h

@@ -29,6 +29,15 @@ struct CellTypes
 	std::set<std::string> cell_types;
 	std::vector<const RTLIL::Design*> designs;
 
+	CellTypes()
+	{
+	}
+
+	CellTypes(const RTLIL::Design *design)
+	{
+		setup(design);
+	}
+
 	void setup(const RTLIL::Design *design = NULL)
 	{
 		if (design)

kernel/sigtools.h

@@ -164,6 +164,18 @@ struct SigSet
 		}
 	}
 
+	void insert(RTLIL::SigSpec sig, const std::set<T> &data)
+	{
+		sig.expand();
+		for (auto &c : sig.chunks) {
+			if (c.wire == NULL)
+				continue;
+			assert(c.width == 1);
+			bitDef_t bit(c.wire, c.offset);
+			bits[bit].insert(data.begin(), data.end());
+		}
+	}
+
 	void erase(RTLIL::SigSpec sig)
 	{
 		sig.expand();
@@ -188,6 +200,18 @@ struct SigSet
 		}
 	}
 
+	void erase(RTLIL::SigSpec sig, const std::set<T> &data)
+	{
+		sig.expand();
+		for (auto &c : sig.chunks) {
+			if (c.wire == NULL)
+				continue;
+			assert(c.width == 1);
+			bitDef_t bit(c.wire, c.offset);
+			bits[bit].erase(data.begin(), data.end());
+		}
+	}
+
 	void find(RTLIL::SigSpec sig, std::set<T> &result)
 	{
 		sig.expand();