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