    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 CastExpr extends Expr
    023    {
    024      public /*@ non_null @*/ Expr expr;
    025
    026      //@ invariant type.syntax;
    027      public /*@ non_null @*/ Type type;
    028
    029      //@ invariant locOpenParen != javafe.util.Location.NULL;
    030      public int locOpenParen;
    031
    032      //@ invariant locCloseParen != javafe.util.Location.NULL;
    033      public int locCloseParen;
    034
    035      public int getStartLoc() { return locOpenParen; }
    036      public int getEndLoc() { return expr.getEndLoc(); }
    037
    038
    039    // Generated boilerplate constructors:
    040
    041      /**
    042       * Construct a raw CastExpr whose class invariant(s) have not
    043       * yet been established.  It is the caller's job to
    044       * initialize the returned node's fields so that any
    045       * class invariants hold.
    046       */
    047      //@ requires I_will_establish_invariants_afterwards;
    048      protected CastExpr() {}    //@ nowarn Invariant,NonNullInit;
    049
    050
    051    // Generated boilerplate methods:
    052
    053      public final int childCount() {
    054         return 2;
    055      }
    056
    057      public final Object childAt(int index) {
    058              /*throws IndexOutOfBoundsException*/
    059         if (index < 0)
    060            throw new IndexOutOfBoundsException("AST child index " + index);
    061         int indexPre = index;
    062
    063         int sz;
    064
    065         if (index == 0) return this.expr;
    066         else index--;
    067
    068         if (index == 0) return this.type;
    069         else index--;
    070
    071         throw new IndexOutOfBoundsException("AST child index " + indexPre);
    072      }   //@ nowarn Exception;
    073
    074      public final String toString() {
    075         return "[CastExpr"
    076            + " expr = " + this.expr
    077            + " type = " + this.type
    078            + " locOpenParen = " + this.locOpenParen
    079            + " locCloseParen = " + this.locCloseParen
    080            + "]";
    081      }
    082
    083      public final int getTag() {
    084         return TagConstants.CASTEXPR;
    085      }
    086
    087      public final void accept(Visitor v) { v.visitCastExpr(this); }
    088
    089      public final Object accept(VisitorArgResult v, Object o) {return v.visitCastExpr(this, o); }
    090
    091      public void check() {
    092         super.check();
    093         this.expr.check();
    094         this.type.check();
    095      }
    096
    097      //@ requires type.syntax;
    098      //@ requires locOpenParen != javafe.util.Location.NULL;
    099      //@ requires locCloseParen != javafe.util.Location.NULL;
    100      //@ ensures \result != null;
    101      public static CastExpr make(/*@ non_null @*/ Expr expr, /*@ non_null @*/ Type type, int locOpenParen, int locCloseParen) {
    102         //@ set I_will_establish_invariants_afterwards = true;
    103         CastExpr result = new CastExpr();
    104         result.expr = expr;
    105         result.type = type;
    106         result.locOpenParen = locOpenParen;
    107         result.locCloseParen = locCloseParen;
    108         return result;
    109      }
    110    }