1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is TransforMiiX XSLT processor code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * The MITRE Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1999
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Keith Visco <kvisco@ziplink.net> (Original Author)
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #include "txExpr.h"
40 : #include "txNodeSet.h"
41 : #include "txIXPathContext.h"
42 : #include "txXPathTreeWalker.h"
43 :
44 : /**
45 : * Evaluates this Expr based on the given context node and processor state
46 : * @param context the context node for evaluation of this Expr
47 : * @param ps the ContextState containing the stack information needed
48 : * for evaluation
49 : * @return the result of the evaluation
50 : **/
51 : nsresult
52 0 : RootExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
53 : {
54 0 : txXPathTreeWalker walker(aContext->getContextNode());
55 0 : walker.moveToRoot();
56 :
57 0 : return aContext->recycler()->getNodeSet(walker.getCurrentPosition(),
58 0 : aResult);
59 : }
60 :
61 0 : TX_IMPL_EXPR_STUBS_0(RootExpr, NODESET_RESULT)
62 :
63 : bool
64 0 : RootExpr::isSensitiveTo(ContextSensitivity aContext)
65 : {
66 0 : return !!(aContext & NODE_CONTEXT);
67 : }
68 :
69 : #ifdef TX_TO_STRING
70 : void
71 0 : RootExpr::toString(nsAString& dest)
72 : {
73 0 : if (mSerialize)
74 0 : dest.Append(PRUnichar('/'));
75 0 : }
76 : #endif
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