porttag.java

一种将c高级语言转化给VHDL的编译器

/*
 *
 LA-CC 05-135 Trident 0.7.1

Copyright Notice
Copyright 2006 (c) the Regents of the University of California.

This Software was produced under a U.S. Government contract
(W-7405-ENG-36) by Los Alamos National Laboratory, which is operated
by the University of California for the U.S. Department of Energy. The
U.S. Government is licensed to use, reproduce, and distribute this
Software. Permission is granted to the public to copy and use this
Software without charge, provided that this Notice and any statement
of authorship are reproduced on all copies. Neither the Government nor
the University makes any warranty, express or implied, or assumes any
liability or responsibility for the user of this Software.

 
 */ 
package fp.circuit;

import fp.util.Nameable;
// should this be in util?

public class PortTag extends Nameable implements Direction {
  
  //public final static int IN = 0;
  //public final static int OUT = 1;
  //public final static int INOUT = 2;

  public static final String[] port_name = {"n/a", "IN", "OUT", "INOUT" };

  // There parents are nodes -- they are subjegated to Node underlings
  private Node _parent;
  private Net _net;
  private int _type;
  private int _width;

  
  public PortTag(Node parent, String name, int type, int width, Net net) {
    super(name);
    _parent = parent;
    _type = type;
    _width = width;
    _net = net;
  }

  public PortTag(Node parent, String name, int type, int width) {
    this(parent, name, type, width, null);
  }

  public Net getNet() { return _net; }
  void setNet(Net e) { _net = e; }

  public Node getParent() { return _parent; } 
  void setParent(Node p) { _parent = p; }

  public int getType() { return _type; }

  public String getTypeString() {
    if (_type >= IN && _type <= INOUT) 
      return port_name[_type];
    else 
      return null;
  }

  public int getWidth() { return _width; }
  void setWidth(int w) { _width = w; }

  public String toString() {
    StringBuffer sbuf = new StringBuffer("Port ");
    sbuf.append(getName()).append(" (").append(_width);
    sbuf.append(") : ").append(getTypeString());
    sbuf.append(" - net "+getNet());
    return sbuf.toString();
  }


  public String toDot() {
    return "<"+getName()+"> "+getName()+" : "+_width+" ";
  }
                                                                                    
}