    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 javafe.ast;
    013
    014    import javafe.util.Assert;
    015    import javafe.util.Location;
    016    import javafe.util.ErrorSet;
    017
    018    // Convention: unless otherwise noted, integer fields named "loc" refer
    019    // to the location of the first character of the syntactic unit
    020
    021
    022    /**
    023     * Represents an ObjectDesignator of the form "Expr . ".
    024     *
    025     * Is created both by the parser (eg for "(x).y"),
    026     * and by the name resolution code (eg for "x.y").
    027     */
    028
    029    public class ExprObjectDesignator extends ObjectDesignator
    030    {
    031      public /*@ non_null @*/ Expr expr;
    032
    033      public int getStartLoc() { return expr.getStartLoc(); }
    034      public Type type;
    035      public Type type() { return type; }
    036
    037
    038    // Generated boilerplate constructors:
    039
    040      /**
    041       * Construct a raw ExprObjectDesignator whose class invariant(s) have not
    042       * yet been established.  It is the caller's job to
    043       * initialize the returned node's fields so that any
    044       * class invariants hold.
    045       */
    046      //@ requires I_will_establish_invariants_afterwards;
    047      protected ExprObjectDesignator() {}    //@ nowarn Invariant,NonNullInit;
    048
    049
    050    // Generated boilerplate methods:
    051
    052      public final int childCount() {
    053         return 1;
    054      }
    055
    056      public final Object childAt(int index) {
    057              /*throws IndexOutOfBoundsException*/
    058         if (index < 0)
    059            throw new IndexOutOfBoundsException("AST child index " + index);
    060         int indexPre = index;
    061
    062         int sz;
    063
    064         if (index == 0) return this.expr;
    065         else index--;
    066
    067         throw new IndexOutOfBoundsException("AST child index " + indexPre);
    068      }   //@ nowarn Exception;
    069
    070      public final String toString() {
    071         return "[ExprObjectDesignator"
    072            + " locDot = " + this.locDot
    073            + " expr = " + this.expr
    074            + "]";
    075      }
    076
    077      public final int getTag() {
    078         return TagConstants.EXPROBJECTDESIGNATOR;
    079      }
    080
    081      public final void accept(Visitor v) { v.visitExprObjectDesignator(this); }
    082
    083      public final Object accept(VisitorArgResult v, Object o) {return v.visitExprObjectDesignator(this, o); }
    084
    085      public void check() {
    086         super.check();
    087         this.expr.check();
    088      }
    089
    090      //@ requires locDot != javafe.util.Location.NULL;
    091      //@ ensures \result != null;
    092      public static ExprObjectDesignator make(int locDot, /*@ non_null @*/ Expr expr) {
    093         //@ set I_will_establish_invariants_afterwards = true;
    094         ExprObjectDesignator result = new ExprObjectDesignator();
    095         result.locDot = locDot;
    096         result.expr = expr;
    097         return result;
    098      }
    099    }