dom/xslt/xpath/txVariableRefExpr.cpp@b8a032363ba2 (annotated)
dom/xslt/xpath/txVariableRefExpr.cpp
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "txExpr.h" |
| michael@0 | 7 | #include "nsIAtom.h" |
| michael@0 | 8 | #include "txNodeSet.h" |
| michael@0 | 9 | #include "nsGkAtoms.h" |
| michael@0 | 10 | #include "txIXPathContext.h" |
| michael@0 | 11 | |
| michael@0 | 12 | //-------------------/ |
| michael@0 | 13 | //- VariableRefExpr -/ |
| michael@0 | 14 | //-------------------/ |
| michael@0 | 15 | |
| michael@0 | 16 | /** |
| michael@0 | 17 | * Creates a VariableRefExpr with the given variable name |
| michael@0 | 18 | **/ |
| michael@0 | 19 | VariableRefExpr::VariableRefExpr(nsIAtom* aPrefix, nsIAtom* aLocalName, |
| michael@0 | 20 | int32_t aNSID) |
| michael@0 | 21 | : mPrefix(aPrefix), mLocalName(aLocalName), mNamespace(aNSID) |
| michael@0 | 22 | { |
| michael@0 | 23 | NS_ASSERTION(mLocalName, "VariableRefExpr without local name?"); |
| michael@0 | 24 | if (mPrefix == nsGkAtoms::_empty) |
| michael@0 | 25 | mPrefix = 0; |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | /** |
| michael@0 | 29 | * Evaluates this Expr based on the given context node and processor state |
| michael@0 | 30 | * @param context the context node for evaluation of this Expr |
| michael@0 | 31 | * @param ps the ContextState containing the stack information needed |
| michael@0 | 32 | * for evaluation |
| michael@0 | 33 | * @return the result of the evaluation |
| michael@0 | 34 | **/ |
| michael@0 | 35 | nsresult |
| michael@0 | 36 | VariableRefExpr::evaluate(txIEvalContext* aContext, txAExprResult** aResult) |
| michael@0 | 37 | { |
| michael@0 | 38 | nsresult rv = aContext->getVariable(mNamespace, mLocalName, *aResult); |
| michael@0 | 39 | if (NS_FAILED(rv)) { |
| michael@0 | 40 | // XXX report error, undefined variable |
| michael@0 | 41 | return rv; |
| michael@0 | 42 | } |
| michael@0 | 43 | return NS_OK; |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | TX_IMPL_EXPR_STUBS_0(VariableRefExpr, ANY_RESULT) |
| michael@0 | 47 | |
| michael@0 | 48 | bool |
| michael@0 | 49 | VariableRefExpr::isSensitiveTo(ContextSensitivity aContext) |
| michael@0 | 50 | { |
| michael@0 | 51 | return !!(aContext & VARIABLES_CONTEXT); |
| michael@0 | 52 | } |
| michael@0 | 53 | |
| michael@0 | 54 | #ifdef TX_TO_STRING |
| michael@0 | 55 | void |
| michael@0 | 56 | VariableRefExpr::toString(nsAString& aDest) |
| michael@0 | 57 | { |
| michael@0 | 58 | aDest.Append(char16_t('$')); |
| michael@0 | 59 | if (mPrefix) { |
| michael@0 | 60 | nsAutoString prefix; |
| michael@0 | 61 | mPrefix->ToString(prefix); |
| michael@0 | 62 | aDest.Append(prefix); |
| michael@0 | 63 | aDest.Append(char16_t(':')); |
| michael@0 | 64 | } |
| michael@0 | 65 | nsAutoString lname; |
| michael@0 | 66 | mLocalName->ToString(lname); |
| michael@0 | 67 | aDest.Append(lname); |
| michael@0 | 68 | } |
| michael@0 | 69 | #endif |
