001    // -*- mode: java -*-
002    /* Copyright 2000, 2001, Compaq Computer Corporation */
003    
004    /* IF THIS IS A JAVA FILE, DO NOT EDIT IT!  
005    
006       Most Java files in this directory which are part of the Javafe AST
007       are automatically generated using the astgen comment (see
008       ESCTools/Javafe/astgen) from the input file 'hierarchy.h'.  If you
009       wish to modify AST classes or introduce new ones, modify
010       'hierarchy.j.'
011     */
012    
013    package javafe.ast;
014    
015    import javafe.util.Assert;
016    import javafe.util.Location;
017    import javafe.util.ErrorSet;
018    
019    // Convention: unless otherwise noted, integer fields named "loc" refer
020    // to the location of the first character of the syntactic unit
021    
022    
023    /**
024     * Represents a Name that occurs in an Expression position. 
025     * These are name-resolved to VariableAccess,
026     * ExprFieldAccess or TypeFieldAccess.
027     */
028    
029    public class AmbiguousVariableAccess extends Expr
030    {
031      public /*@ non_null @*/ Name name;
032    
033    
034      //@ public represents startLoc <- name.getStartLoc();
035      public /*@ pure @*/ int getStartLoc() { return name.getStartLoc(); }
036      //@ also public normal_behavior
037      //@ ensures \result == name.getEndLoc();
038      public /*@ pure @*/ int getEndLoc() { return name.getEndLoc(); }
039    
040    
041    // Generated boilerplate constructors:
042    
043      //@ ensures this.name == name;
044      protected AmbiguousVariableAccess(/*@ non_null @*/ Name name) {
045         super();
046         this.name = name;
047      }
048    
049    // Generated boilerplate methods:
050    
051      public final int childCount() {
052         return 1;
053      }
054    
055      public final Object childAt(int index) {
056              /*throws IndexOutOfBoundsException*/
057         if (index < 0)
058            throw new IndexOutOfBoundsException("AST child index " + index);
059         int indexPre = index;
060    
061         int sz;
062    
063         if (index == 0) return this.name;
064         else index--;
065    
066         throw new IndexOutOfBoundsException("AST child index " + indexPre);
067      }   //@ nowarn Exception;
068    
069      public final /*@non_null*/String toString() {
070         return "[AmbiguousVariableAccess"
071            + " name = " + this.name
072            + "]";
073      }
074    
075      public final int getTag() {
076         return TagConstants.AMBIGUOUSVARIABLEACCESS;
077      }
078    
079      public final void accept(Visitor v) { v.visitAmbiguousVariableAccess(this); }
080    
081      public final Object accept(VisitorArgResult v, Object o) {return v.visitAmbiguousVariableAccess(this, o); }
082    
083      public void check() {
084         super.check();
085         this.name.check();
086      }
087    
088      //@ ensures \result != null;
089      public static AmbiguousVariableAccess make(/*@ non_null @*/ Name name) {
090         AmbiguousVariableAccess result = new AmbiguousVariableAccess(name);
091         return result;
092      }
093    }