    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    public class SimpleName extends Name
    023    {
    024      public /*@ non_null @*/ Identifier id;
    025
    026
    027      //@ invariant loc != javafe.util.Location.NULL;
    028      public int loc;
    029
    030
    031      //@ invariant length == 1;
    032
    033      /**
    034       * @return a String representation of <code>this</code> in Java's
    035       * syntax.
    036       */
    037      public String printName() {
    038        return id.toString();
    039      }
    040
    041        public boolean equals(Object other) {
    042            if (other instanceof SimpleName)
    043                return id == ((SimpleName)other).id;
    044            else
    045                return false;
    046        }
    047
    048      public Name prefix(int len) {
    049        Assert.precondition(len == 1);
    050        return make(id, loc);
    051      }
    052
    053      /** Return a hash code for <code>this</code> such that two
    054        <code>Name</code>s that are <code>equals</code> have the same hash
    055        code.
    056       */
    057      public int hashCode() {
    058        return id.hashCode();
    059      }
    060
    061      /**
    062       * @return the first <code>len</code> identifiers in
    063       * <code>this</code> in an array.  Requires that <code>len</code> be
    064       * between 0 and length of <code>this</code> inclusive.
    065       */
    066      public String[] toStrings(int len) {
    067        Assert.precondition(len == 0 || len == 1);
    068        if (len == 0) return emptyStringArray;
    069        String[] result = { id.toString() };
    070        return result;
    071      }
    072
    073      /** Return the number of identifiers in <code>this</code>. */
    074      public int size() { return 1; }
    075
    076      /** Return the ith identifier of <code>this</code>. */
    077      public Identifier identifierAt(int i) {
    078        if (i != 0) throw new ArrayIndexOutOfBoundsException();
    079        return id;
    080      }
    081
    082      /** Return the location of the ith identifier of <code>this</code>. */
    083      public int locIdAt(int i) {
    084        if (i != 0) throw new ArrayIndexOutOfBoundsException();
    085        return loc;
    086      }
    087
    088      /** Return the location of the dot after the ith identifier of
    089        <code>this</code>.
    090       */
    091      public int locDotAfter(int i) {
    092        throw new ArrayIndexOutOfBoundsException();
    093      }
    094
    095      public int getStartLoc() { return loc; }
    096
    097
    098    // Generated boilerplate constructors:
    099
    100      /**
    101       * Construct a raw SimpleName whose class invariant(s) have not
    102       * yet been established.  It is the caller's job to
    103       * initialize the returned node's fields so that any
    104       * class invariants hold.
    105       */
    106      //@ requires I_will_establish_invariants_afterwards;
    107      protected SimpleName() {}    //@ nowarn Invariant,NonNullInit;
    108
    109
    110    // Generated boilerplate methods:
    111
    112      public final int childCount() {
    113         return 1;
    114      }
    115
    116      public final Object childAt(int index) {
    117              /*throws IndexOutOfBoundsException*/
    118         if (index < 0)
    119            throw new IndexOutOfBoundsException("AST child index " + index);
    120         int indexPre = index;
    121
    122         int sz;
    123
    124         if (index == 0) return this.id;
    125         else index--;
    126
    127         throw new IndexOutOfBoundsException("AST child index " + indexPre);
    128      }   //@ nowarn Exception;
    129
    130      public final String toString() {
    131         return "[SimpleName"
    132            + " id = " + this.id
    133            + " loc = " + this.loc
    134            + "]";
    135      }
    136
    137      public final int getTag() {
    138         return TagConstants.SIMPLENAME;
    139      }
    140
    141      public final void accept(Visitor v) { v.visitSimpleName(this); }
    142
    143      public final Object accept(VisitorArgResult v, Object o) {return v.visitSimpleName(this, o); }
    144
    145      public void check() {
    146         super.check();
    147         if (this.id == null) throw new RuntimeException();
    148      }
    149
    150      //@ requires loc != javafe.util.Location.NULL;
    151      //@ ensures \result != null;
    152      public static SimpleName make(/*@ non_null @*/ Identifier id, int loc) {
    153         //@ set I_will_establish_invariants_afterwards = true;
    154         SimpleName result = new SimpleName();
    155         result.id = id;
    156         result.loc = loc;
    157         return result;
    158      }
    159    }