001    package edu.rice.cs.javalanglevels.tree;
002    
003    import edu.rice.cs.javalanglevels.SourceInfo;
004    
005    /**
006     * Class ValueReturnStatement, a component of the JExpressionIF composite hierarchy.
007     * Note: null is not allowed as a value for any field.
008     * @version  Generated automatically by ASTGen at Sun Mar 04 23:01:28 CST 2012
009     */
010    public class ValueReturnStatement extends ReturnStatement {
011      private final Expression _value;
012    
013      /**
014       * Constructs a ValueReturnStatement.
015       * @throws java.lang.IllegalArgumentException  If any parameter to the constructor is null.
016       */
017      public ValueReturnStatement(SourceInfo in_sourceInfo, Expression in_value) {
018        super(in_sourceInfo);
019    
020        if (in_value == null) {
021          throw new java.lang.IllegalArgumentException("Parameter 'value' to the ValueReturnStatement constructor was null. This class may not have null field values.");
022        }
023        _value = in_value;
024      }
025    
026      final public Expression getValue() { return _value; }
027    
028      public <RetType> RetType visit(JExpressionIFVisitor<RetType> visitor) { return visitor.forValueReturnStatement(this); }
029      public void visit(JExpressionIFVisitor_void visitor) { visitor.forValueReturnStatement(this); }
030    
031      /**
032       * Implementation of toString that uses
033       * {@link #output} to generated nicely tabbed tree.
034       */
035      public java.lang.String toString() {
036        java.io.StringWriter w = new java.io.StringWriter();
037        output(w);
038        return w.toString();
039      }
040    
041      /**
042       * Prints this object out as a nicely tabbed tree.
043       */
044      public void output(java.io.Writer writer) {
045        outputHelp(new TabPrintWriter(writer, 2));
046      }
047    
048      public void outputHelp(TabPrintWriter writer) {
049        writer.print("ValueReturnStatement" + ":");
050        writer.indent();
051    
052        writer.startLine("");
053        writer.print("sourceInfo = ");
054        SourceInfo temp_sourceInfo = getSourceInfo();
055        if (temp_sourceInfo == null) {
056          writer.print("null");
057        } else {
058          writer.print(temp_sourceInfo);
059        }
060    
061        writer.startLine("");
062        writer.print("value = ");
063        Expression temp_value = getValue();
064        if (temp_value == null) {
065          writer.print("null");
066        } else {
067          temp_value.outputHelp(writer);
068        }
069        writer.unindent();
070      }
071    
072      /**
073       * Implementation of equals that is based on the values
074       * of the fields of the object. Thus, two objects 
075       * created with identical parameters will be equal.
076       */
077      public boolean equals(java.lang.Object obj) {
078        if (obj == null) return false;
079        if ((obj.getClass() != this.getClass()) || (obj.hashCode() != this.hashCode())) {
080          return false;
081        } else {
082          ValueReturnStatement casted = (ValueReturnStatement) obj;
083          if (! (getValue().equals(casted.getValue()))) return false;
084          return true;
085        }
086      }
087    
088      /**
089       * Implementation of hashCode that is consistent with
090       * equals. The value of the hashCode is formed by
091       * XORing the hashcode of the class object with
092       * the hashcodes of all the fields of the object.
093       */
094      protected int generateHashCode() {
095        int code = getClass().hashCode();
096        code ^= 0;
097        code ^= getValue().hashCode();
098        return code;
099      }
100    }