001    /* Copyright 2000, 2001, Compaq Computer Corporation */
002    
003    /* IF THIS IS A JAVA FILE, DO NOT EDIT IT!  
004    
005       Most Java files in this directory which are part of the Javafe AST
006       are automatically generated using the astgen comment (see
007       ESCTools/Javafe/astgen) from the input file 'hierarchy.h'.  If you
008       wish to modify AST classes or introduce new ones, modify
009       'hierarchy.j.'
010     */
011    
012    package escjava.ast;
013    
014    import java.util.Hashtable;
015    import java.util.Set;
016    import java.util.ArrayList;
017    
018    import javafe.ast.*;
019    import javafe.util.Assert;
020    import javafe.util.Location;
021    import escjava.ParsedRoutineSpecs;
022    
023    // Convention: unless otherwise noted, integer fields named "loc" refer
024    // to the location of the first character of the syntactic unit
025    
026    //# TagBase javafe.tc.TagConstants.LAST_TAG + 1
027    //# VisitorRoot javafe.ast.Visitor
028    
029    
030    //// Spec expressions
031    
032    public abstract class GCExpr extends Expr
033    {
034      public int sloc;
035    
036      public int eloc;
037    
038    
039      public int getStartLoc() { return sloc; }
040      public int getEndLoc() { return eloc; }
041    
042    
043    // Generated boilerplate constructors:
044    
045      /**
046       * Construct a raw GCExpr whose class invariant(s) have not
047       * yet been established.  It is the caller's job to
048       * initialize the returned node's fields so that any
049       * class invariants hold.
050       */
051    
052      
053    
054    // Generated boilerplate methods:
055    
056      /** Return the number of children a node has. */
057      public abstract int childCount();
058    
059      /** Return the first-but-ith child of a node. */
060      public abstract Object childAt(int i);
061    
062      /** Return the tag of a node. */
063      public abstract int getTag();
064    
065      /** Return a string representation of <code>this</code>.
066      Meant for debugging use only, not for presentation. */
067      public abstract String toString();
068    
069      /** Accept a visit from <code>v</code>.  This method simply
070      calls the method of <code>v</code> corresponding to the
071      allocated type of <code>this</code>, passing <code>this</code>
072      as the argument.  See the design patterns book. */
073      public abstract void accept(javafe.ast.Visitor v);
074    
075    public abstract Object accept(javafe.ast.VisitorArgResult v, Object o);
076    
077      public void check() {
078      }
079    
080    }