1 ////////////////////////////////////////////////////////////////////////////////
2 // MillScript: an Open Spice interpreter and batch website creation tool
3 // Copyright (C) 2001-2004 Open World Ltd
4 // Copyright (C) 2005 Kevin Rogers
5 //
6 // This file is part of MillScript.
7 //
8 // MillScript is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU General Public License as published by the Free
10 // Software Foundation; either version 2 of the License, or (at your option)
11 // any later version.
12 //
13 // MillScript is distributed in the hope that it will be useful, but WITHOUT
14 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 // more details.
17 //
18 // You should have received a copy of the GNU General Public License along with
19 // MillScript; if not, write to the Free Software Foundation, Inc., 59 Temple
20 // Place, Suite 330, Boston, MA 02111-1307 USA
21 ////////////////////////////////////////////////////////////////////////////////
22 package org.millscript.millscript.loaders;
23
24 import org.millscript.millscript.alert.Alerts;
25
26 import java.io.IOException;
27
28 /**
29 * This is the base class of all bindings loaders in MillScript. A bindings
30 * loader compiles the contents of the source into the package registered with
31 * this loader. Multiple bindings may be established, but a binding for the
32 * symbol registered with this pacakge must be one of them.
33 */
34 public abstract class BindingsLoader extends Loader {
35
36 /**
37 * @see org.millscript.millscript.loaders.Loader#loadValue()
38 */
39 @Override
40 public Object loadValue() throws IOException {
41 loadBindings();
42 if ( this.pack.hasBindingFor( symbol ) ) {
43 return this.pack.valueOf( symbol );
44 } else {
45 throw(
46 Alerts.compile(
47 "Loaded file but variable not bound",
48 "The key variable must be set after loading"
49 ).
50 culprit( "name", symbol ).
51 culprit( "origin", entry ).
52 mishap()
53 );
54 }
55 }
56
57 }