class EncodingNode;
class EncodingEdge;
class EncodingSubGraph;
-
+class SignatureEnc;
+class Signature;
+class ValuedSignature;
+class AlloyElementSig;
+class AlloySetSig;
+class AlloyBoolSig;
struct IncrementalSolver;
typedef struct IncrementalSolver IncrementalSolver;
struct TableEntry;