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    /**
031     * @note If <code>loc</code> is <code>Location.NULL</code>, then this
032     * node is <em>not</em> due to a source-level "type" construct in an
033     * annotation expression but rather was created during translations.
034     */
035    
036    public class TypeExpr extends GCExpr
037    {
038      public /*@ non_null @*/ Type type;
039    
040    
041    
042    // Generated boilerplate constructors:
043    
044      /**
045       * Construct a raw TypeExpr whose class invariant(s) have not
046       * yet been established.  It is the caller's job to
047       * initialize the returned node's fields so that any
048       * class invariants hold.
049       */
050      //@ requires I_will_establish_invariants_afterwards;
051      protected TypeExpr() {}    //@ nowarn Invariant,NonNullInit;
052    
053    
054    // Generated boilerplate methods:
055    
056      public final int childCount() {
057         return 1;
058      }
059    
060      public final Object childAt(int index) {
061              /*throws IndexOutOfBoundsException*/
062         if (index < 0)
063            throw new IndexOutOfBoundsException("AST child index " + index);
064         int indexPre = index;
065    
066         int sz;
067    
068         if (index == 0) return this.type;
069         else index--;
070    
071         throw new IndexOutOfBoundsException("AST child index " + indexPre);
072      }   //@ nowarn Exception;
073    
074      public final String toString() {
075         return "[TypeExpr"
076            + " sloc = " + this.sloc
077            + " eloc = " + this.eloc
078            + " type = " + this.type
079            + "]";
080      }
081    
082      public final int getTag() {
083         return TagConstants.TYPEEXPR;
084      }
085    
086      public final void accept(javafe.ast.Visitor v) { 
087        if (v instanceof Visitor) ((Visitor)v).visitTypeExpr(this);
088      }
089    
090      public final Object accept(javafe.ast.VisitorArgResult v, Object o) { 
091        if (v instanceof VisitorArgResult) return ((VisitorArgResult)v).visitTypeExpr(this, o); else return null;
092      }
093    
094      public void check() {
095         super.check();
096         this.type.check();
097      }
098    
099      //@ ensures \result != null;
100      public static TypeExpr make(int sloc, int eloc, /*@ non_null @*/ Type type) {
101         //@ set I_will_establish_invariants_afterwards = true;
102         TypeExpr result = new TypeExpr();
103         result.sloc = sloc;
104         result.eloc = eloc;
105         result.type = type;
106         return result;
107      }
108    }