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    public class ArrayRangeRefExpr extends Expr
031    {
032      public int locOpenBracket;
033    
034      public /*@ non_null @*/ Expr array;
035    
036      public Expr lowIndex;
037    
038      public Expr highIndex;
039    
040    
041      public int getStartLoc() { return locOpenBracket; }
042    
043    
044    // Generated boilerplate constructors:
045    
046      /**
047       * Construct a raw ArrayRangeRefExpr whose class invariant(s) have not
048       * yet been established.  It is the caller's job to
049       * initialize the returned node's fields so that any
050       * class invariants hold.
051       */
052      //@ requires I_will_establish_invariants_afterwards;
053      protected ArrayRangeRefExpr() {}    //@ nowarn Invariant,NonNullInit;
054    
055    
056    // Generated boilerplate methods:
057    
058      public final int childCount() {
059         return 3;
060      }
061    
062      public final Object childAt(int index) {
063              /*throws IndexOutOfBoundsException*/
064         if (index < 0)
065            throw new IndexOutOfBoundsException("AST child index " + index);
066         int indexPre = index;
067    
068         int sz;
069    
070         if (index == 0) return this.array;
071         else index--;
072    
073         if (index == 0) return this.lowIndex;
074         else index--;
075    
076         if (index == 0) return this.highIndex;
077         else index--;
078    
079         throw new IndexOutOfBoundsException("AST child index " + indexPre);
080      }   //@ nowarn Exception;
081    
082      public final String toString() {
083         return "[ArrayRangeRefExpr"
084            + " locOpenBracket = " + this.locOpenBracket
085            + " array = " + this.array
086            + " lowIndex = " + this.lowIndex
087            + " highIndex = " + this.highIndex
088            + "]";
089      }
090    
091      public final int getTag() {
092         return TagConstants.ARRAYRANGEREFEXPR;
093      }
094    
095      public final void accept(javafe.ast.Visitor v) { 
096        if (v instanceof Visitor) ((Visitor)v).visitArrayRangeRefExpr(this);
097      }
098    
099      public final Object accept(javafe.ast.VisitorArgResult v, Object o) { 
100        if (v instanceof VisitorArgResult) return ((VisitorArgResult)v).visitArrayRangeRefExpr(this, o); else return null;
101      }
102    
103      public void check() {
104         this.array.check();
105         if (this.lowIndex != null)
106            this.lowIndex.check();
107         if (this.highIndex != null)
108            this.highIndex.check();
109      }
110    
111      //@ ensures \result != null;
112      public static ArrayRangeRefExpr make(int locOpenBracket, /*@ non_null @*/ Expr array, Expr lowIndex, Expr highIndex) {
113         //@ set I_will_establish_invariants_afterwards = true;
114         ArrayRangeRefExpr result = new ArrayRangeRefExpr();
115         result.locOpenBracket = locOpenBracket;
116         result.array = array;
117         result.lowIndex = lowIndex;
118         result.highIndex = highIndex;
119         return result;
120      }
121    }