public static IEnumerable<ProofState> EvalNextControlFlow(Statement stmt, ProofState state) {
IEnumerable<ProofState> ret;
switch(state.GetCurFrameTyp()) {
case "tmatch":
ret = new Match().EvalNext(stmt as TacnyCasesBlockStmt, state);
break;
default:
ret = null;
break;
}
return ret;
}
public static bool IsFlowControlFrame(ProofState state) {
var typ = state.GetCurFrameTyp();
//more control frame should be added here
return (typ == "tmatch");
}