plugins/net.mograsim.logic.model.verilog/src/net/mograsim/logic/model/verilog/model/statements/Assign.java

   1 package net.mograsim.logic.model.verilog.model.statements;
   2
   3 import java.util.Objects;
   4 import java.util.Set;
   5
   6 import net.mograsim.logic.model.verilog.model.expressions.Expression;
   7 import net.mograsim.logic.model.verilog.model.signals.NamedSignal;
   8 import net.mograsim.logic.model.verilog.model.signals.Signal;
   9 import net.mograsim.logic.model.verilog.utils.CollectionsUtils;
  10
  11 public class Assign extends Statement
  12 {
  13         private final NamedSignal target;
  14         private final Expression source;
  15
  16         public Assign(NamedSignal target, Expression source)
  17         {
  18                 this.target = Objects.requireNonNull(target);
  19                 this.source = Objects.requireNonNull(source);
  20
  21                 check();
  22         }
  23
  24         private void check()
  25         {
  26                 if (source.getWidth() != target.getWidth())
  27                         throw new IllegalArgumentException("Signal widthes don't match");
  28         }
  29
  30         public Signal getTarget()
  31         {
  32                 return target;
  33         }
  34
  35         public Expression getSource()
  36         {
  37                 return source;
  38         }
  39
  40         @Override
  41         public String toVerilogCode()
  42         {
  43                 return "assign " + target.toReferenceVerilogCode() + " = " + source.toVerilogCode() + ";";
  44         }
  45
  46         @Override
  47         public Set<String> getDefinedNames()
  48         {
  49                 return Set.of();
  50         }
  51
  52         @Override
  53         public Set<Signal> getDefinedSignals()
  54         {
  55                 return Set.of();
  56         }
  57
  58         @Override
  59         public Set<Signal> getReferencedSignals()
  60         {
  61                 return CollectionsUtils.union(Set.of(target), source.getReferencedSignals());
  62         }
  63
  64         @Override
  65         public String toString()
  66         {
  67                 return target.getName() + " = " + source;
  68         }
  69
  70         @Override
  71         public int hashCode()
  72         {
  73                 final int prime = 31;
  74                 int result = 1;
  75                 result = prime * result + ((source == null) ? 0 : source.hashCode());
  76                 result = prime * result + ((target == null) ? 0 : target.hashCode());
  77                 return result;
  78         }
  79
  80         @Override
  81         public boolean equals(Object obj)
  82         {
  83                 if (this == obj)
  84                         return true;
  85                 if (obj == null)
  86                         return false;
  87                 if (getClass() != obj.getClass())
  88                         return false;
  89                 Assign other = (Assign) obj;
  90                 if (source == null)
  91                 {
  92                         if (other.source != null)
  93                                 return false;
  94                 } else if (!source.equals(other.source))
  95                         return false;
  96                 if (target == null)
  97                 {
  98                         if (other.target != null)
  99                                 return false;
 100                 } else if (!target.equals(other.target))
 101                         return false;
 102                 return true;
 103         }
 104 }