Parse UDP primitives all the way to pform.

PUdp.h

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+#ifndef __PUdp_H
+#define __PUdp_H
+/*
+ * Copyright (c) 1998 Stephen Williams ([email protected])
+ *
+ *    This source code is free software; you can redistribute it
+ *    and/or modify it in source code form under the terms of the GNU
+ *    General Public License as published by the Free Software
+ *    Foundation; either version 2 of the License, or (at your option)
+ *    any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+#if !defined(WINNT)
+#ident "$Id: PUdp.h,v 1.1 1998/11/25 02:35:53 steve Exp $"
+#endif
+
+# include  <vector>
+# include  "verinum.h"
+
+/*
+ * This class represents a parsed UDP. This is a much simpler object
+ * then a module or macromodule.
+ *
+ *   - all ports are scaler,
+ *   - pin 0 (the first port) is always output,
+ *     and the remaining pins are input.
+ *
+ * Thus, the ports can be represented as an ordered list of pin names.
+ * If the output port is declared as a register in the Verilog source,
+ * then this is a sequential UDP and the sequential flag is set to true.
+ *
+ * STATE TABLE
+ * Each entry in the state table is given as a string with the same
+ * number of characters as inputs. If the UDP is sequential, a
+ * character is also included at the end of the string to represent
+ * the current output.
+ *
+ * If the UDP is sequential, the "initial" member is taken to be the
+ * intial value assigned in the source, or 'x' if none is given.
+ */
+class PUdp {
+
+    public:
+      explicit PUdp(const string&n, unsigned nports)
+      : ports(nports), sequential(false), initial(verinum::Vx), name_(n) { }
+
+      vector<string>ports;
+      bool sequential;
+
+      vector<string>tinput;
+      vector<char>  tcurrent;
+      vector<char>  toutput;
+
+      verinum::V initial;
+
+      void dump(ostream&out) const;
+
+    private:
+      const string name_;
+
+    private: // Not implemented
+      PUdp(const PUdp&);
+      PUdp& operator= (const PUdp&);
+};
+
+/*
+ * $Log: PUdp.h,v $
+ * Revision 1.1  1998/11/25 02:35:53  steve
+ *  Parse UDP primitives all the way to pform.
+ *
+ */
+#endif