entity.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.util.vhdl.generator;


import java.util.*;


public class Entity implements VHDLout {

  private Identifier _identifier;
  // entity header
  private GenericList _generics;
  private PortList _ports;
  private EntityItemList _items;

  // entity statememt list --which contains:
  // concurrent assertions, passive statements


  public Entity(Identifier identifier, GenericList generics,
		PortList ports, EntityItemList items) {
    _identifier = identifier;

    if (generics != null) 
      _generics = generics;
    else
      _generics = new GenericList();
    if (ports != null) 
      _ports = ports;
    else
      _ports = new PortList();
    
    if (items != null) 
      _items = items;
    else
      _items = new EntityItemList();
  }

  
  public Entity(Identifier identifier, GenericList generics,
		PortList ports) {
    this(identifier, generics, ports, null);
  }

  public Entity(Identifier identifier, PortList ports) {
    this(identifier, null, ports, null);
  }

  public Entity(Identifier identifier) {
    this(identifier, null, null, null);
  }
    


  GenericList getGenerics() { return _generics; }
  public void addGeneric(InterfaceDeclaration s) { _generics.add(s); }

  PortList getPorts() { return _ports; }
  public void addPort(InterfaceDeclaration s) { _ports.add(s); }

  EntityItemList getItems() { return _items; }
  public void addItem(EntityItem s) { _items.add(s); }

   public StringBuffer toVHDL(StringBuffer s, String pre) {
    s.append(pre).append("entity ");
    _identifier.toVHDL(s,"");
    s.append(" is\n");
    if (_generics.size() > 0)
      _generics.toVHDL(s,pre+TAB);
    if (_ports.size() > 0)
      _ports.toVHDL(s,pre+TAB);
    if (_items.size() > 0)
      _items.toVHDL(s,pre+TAB);

    // statement list would go here...

    s.append(pre).append("end entity ");
    _identifier.toVHDL(s,"");
    s.append(";\n");
    return s;
  }

  public String toString() {
    return toVHDL(new StringBuffer(), "").toString();
  }


}