1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is TransforMiiX XSLT processor.
*
* The Initial Developer of the Original Code is The MITRE Corporation.
* Portions created by MITRE are Copyright (C) 1999 The MITRE Corporation.
*
* Portions created by Keith Visco as a Non MITRE employee,
* (C) 1999 Keith Visco. All Rights Reserved.
*
* Contributor(s):
* Keith Visco, kvisco@ziplink.net
* -- original author.
*
*/
#include "Expr.h"
#include "txNodeSet.h"
#include "txIXPathContext.h"
/**
* Creates a new RootExpr
* @param aSerialize should this RootExpr be serialized
*/
RootExpr::RootExpr(MBool aSerialize) {
mSerialize = aSerialize;
}
/**
* Evaluates this Expr based on the given context node and processor state
* @param context the context node for evaluation of this Expr
* @param ps the ContextState containing the stack information needed
* for evaluation
* @return the result of the evaluation
**/
nsresult
RootExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
{
const txXPathNode& context = aContext->getContextNode();
nsAutoPtr<txXPathNode> document(txXPathNodeUtils::getDocument(context));
if (!document) {
nsRefPtr<txNodeSet> nodes;
aContext->recycler()->getNodeSet(getter_AddRefs(nodes));
if (!nodes) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(*aResult = nodes);
return NS_OK;
}
return aContext->recycler()->getNodeSet(*document, aResult);
} //-- evaluate
/**
* Returns the String representation of this Expr.
* @param dest the String to use when creating the String
* representation. The String representation will be appended to
* any data in the destination String, to allow cascading calls to
* other #toString() methods for Expressions.
* @return the String representation of this Expr.
**/
void RootExpr::toString(nsAString& dest) {
if (mSerialize)
dest.Append(PRUnichar('/'));
} //-- toString
|
