1 ////////////////////////////////////////////////////////////////////////////////
2 // MillScript: an Open Spice interpreter and batch website creation tool
3 // Copyright (C) 2001-2004 Open World Ltd
4 //
5 // This file is part of MillScript.
6 //
7 // MillScript is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU General Public License as published by the Free
9 // Software Foundation; either version 2 of the License, or (at your option)
10 // any later version.
11 //
12 // MillScript is distributed in the hope that it will be useful, but WITHOUT
13 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 // more details.
16 //
17 // You should have received a copy of the GNU General Public License along with
18 // MillScript; if not, write to the Free Software Foundation, Inc., 59 Temple
19 // Place, Suite 330, Boston, MA 02111-1307 USA
20 ////////////////////////////////////////////////////////////////////////////////
21 package org.millscript.millscript.expr;
22
23
24 /**
25 * This class implements a subrange expression. A subrange expression doesn't
26 * have its own actions, rather it wraps to the subrange sequence function.
27 *
28 * @see org.millscript.millscript.syntax.IndexSyntax
29 * @see org.millscript.millscript.functions.SubrangeFunction
30 */
31 public final class SubrangeExpr extends FakeExpr implements OneResult /* defensive */ {
32
33 /**
34 * Returns an expression applying the subrange function to the specified
35 * left and right hand side expressions.
36 *
37 * @param lhs the expression returning the object to subrange
38 * @param rhs an expression returning the starting point object
39 * @param rhs2 an expression returning the end point object
40 * @return an {@link ApplyExpr} applying the
41 * {@link org.millscript.millscript.functions.SubrangeFunction} to
42 * the specified left and right hand side expressions
43 */
44 public static ApplyExpr make( final Expr lhs, final Expr rhs, final Expr rhs2 ) {
45 return (
46 new ApplyExpr(
47 new NameExpr( "subrangeSequence" ),
48 CommaExpr.make(
49 CheckExpr.make( lhs ),
50 CommaExpr.make(
51 CheckExpr.make( rhs ),
52 CheckExpr.make( rhs2 )
53 )
54 )
55 )
56 );
57 }
58
59 }