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 : * Jonas Sicking.
19 : * Portions created by the Initial Developer are Copyright (C) 2001
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Jonas Sicking <sicking@bigfoot.com> (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 "txIXPathContext.h"
41 :
42 : /*
43 : * Evaluates this Expr based on the given context node and processor state
44 : * @param context the context node for evaluation of this Expr
45 : * @param ps the ContextState containing the stack information needed
46 : * for evaluation.
47 : * @return the result of the evaluation.
48 : */
49 : nsresult
50 0 : UnaryExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
51 : {
52 0 : *aResult = nsnull;
53 :
54 0 : nsRefPtr<txAExprResult> exprRes;
55 0 : nsresult rv = expr->evaluate(aContext, getter_AddRefs(exprRes));
56 0 : NS_ENSURE_SUCCESS(rv, rv);
57 :
58 0 : double value = exprRes->numberValue();
59 : #ifdef HPUX
60 : /*
61 : * Negation of a zero doesn't produce a negative
62 : * zero on HPUX. Perform the operation by multiplying with
63 : * -1.
64 : */
65 : return aContext->recycler()->getNumberResult(-1 * value, aResult);
66 : #else
67 0 : return aContext->recycler()->getNumberResult(-value, aResult);
68 : #endif
69 : }
70 :
71 0 : TX_IMPL_EXPR_STUBS_1(UnaryExpr, NODESET_RESULT, expr)
72 :
73 : bool
74 0 : UnaryExpr::isSensitiveTo(ContextSensitivity aContext)
75 : {
76 0 : return expr->isSensitiveTo(aContext);
77 : }
78 :
79 : #ifdef TX_TO_STRING
80 : void
81 0 : UnaryExpr::toString(nsAString& str)
82 : {
83 0 : if (!expr)
84 0 : return;
85 0 : str.Append(PRUnichar('-'));
86 0 : expr->toString(str);
87 : }
88 : #endif
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