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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "txExpr.h"
#include "txIXPathContext.h"
#include "txNodeSet.h"
//-------------/
//- UnionExpr -/
//-------------/
//-----------------------------/
//- Virtual methods from Expr -/
//-----------------------------/
/**
* 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
UnionExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult)
{
*aResult = nullptr;
RefPtr<txNodeSet> nodes;
nsresult rv = aContext->recycler()->getNodeSet(getter_AddRefs(nodes));
NS_ENSURE_SUCCESS(rv, rv);
uint32_t i, len = mExpressions.Length();
for (i = 0; i < len; ++i) {
RefPtr<txAExprResult> exprResult;
rv = mExpressions[i]->evaluate(aContext, getter_AddRefs(exprResult));
NS_ENSURE_SUCCESS(rv, rv);
if (exprResult->getResultType() != txAExprResult::NODESET) {
//XXX ErrorReport: report nonnodeset error
return NS_ERROR_XSLT_NODESET_EXPECTED;
}
RefPtr<txNodeSet> resultSet, ownedSet;
resultSet = static_cast<txNodeSet*>
(static_cast<txAExprResult*>(exprResult));
exprResult = nullptr;
rv = aContext->recycler()->
getNonSharedNodeSet(resultSet, getter_AddRefs(ownedSet));
NS_ENSURE_SUCCESS(rv, rv);
rv = nodes->addAndTransfer(ownedSet);
NS_ENSURE_SUCCESS(rv, rv);
}
*aResult = nodes;
NS_ADDREF(*aResult);
return NS_OK;
} //-- evaluate
Expr::ExprType
UnionExpr::getType()
{
return UNION_EXPR;
}
TX_IMPL_EXPR_STUBS_LIST(UnionExpr, NODESET_RESULT, mExpressions)
bool
UnionExpr::isSensitiveTo(ContextSensitivity aContext)
{
uint32_t i, len = mExpressions.Length();
for (i = 0; i < len; ++i) {
if (mExpressions[i]->isSensitiveTo(aContext)) {
return true;
}
}
return false;
}
#ifdef TX_TO_STRING
void
UnionExpr::toString(nsAString& dest)
{
uint32_t i;
for (i = 0; i < mExpressions.Length(); ++i) {
if (i > 0)
dest.AppendLiteral(" | ");
mExpressions[i]->toString(dest);
}
}
#endif
|
