    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 ThrowStmt extends Stmt
    023    {
    024      public /*@ non_null @*/ Expr expr;
    025
    026      //@ invariant loc != javafe.util.Location.NULL;
    027      public int loc;
    028
    029      public int getStartLoc() { return loc; }
    030      public int getEndLoc() { return expr.getEndLoc(); }
    031
    032
    033    // Generated boilerplate constructors:
    034
    035      /**
    036       * Construct a raw ThrowStmt whose class invariant(s) have not
    037       * yet been established.  It is the caller's job to
    038       * initialize the returned node's fields so that any
    039       * class invariants hold.
    040       */
    041      //@ requires I_will_establish_invariants_afterwards;
    042      protected ThrowStmt() {}    //@ nowarn Invariant,NonNullInit;
    043
    044
    045    // Generated boilerplate methods:
    046
    047      public final int childCount() {
    048         return 1;
    049      }
    050
    051      public final Object childAt(int index) {
    052              /*throws IndexOutOfBoundsException*/
    053         if (index < 0)
    054            throw new IndexOutOfBoundsException("AST child index " + index);
    055         int indexPre = index;
    056
    057         int sz;
    058
    059         if (index == 0) return this.expr;
    060         else index--;
    061
    062         throw new IndexOutOfBoundsException("AST child index " + indexPre);
    063      }   //@ nowarn Exception;
    064
    065      public final String toString() {
    066         return "[ThrowStmt"
    067            + " expr = " + this.expr
    068            + " loc = " + this.loc
    069            + "]";
    070      }
    071
    072      public final int getTag() {
    073         return TagConstants.THROWSTMT;
    074      }
    075
    076      public final void accept(Visitor v) { v.visitThrowStmt(this); }
    077
    078      public final Object accept(VisitorArgResult v, Object o) {return v.visitThrowStmt(this, o); }
    079
    080      public void check() {
    081         super.check();
    082         this.expr.check();
    083      }
    084
    085      //@ requires loc != javafe.util.Location.NULL;
    086      //@ ensures \result != null;
    087      public static ThrowStmt make(/*@ non_null @*/ Expr expr, int loc) {
    088         //@ set I_will_establish_invariants_afterwards = true;
    089         ThrowStmt result = new ThrowStmt();
    090         result.expr = expr;
    091         result.loc = loc;
    092         return result;
    093      }
    094    }