1 files changed, 64 insertions, 0 deletions
diff --git a/dom/xslt/xpath/txSingleNodeContext.h b/dom/xslt/xpath/txSingleNodeContext.h
new file mode 100644
index 0000000000..80b0680a2d
--- /dev/null
+++ b/dom/xslt/xpath/txSingleNodeContext.h
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+#ifndef __TX_XPATH_SINGLENODE_CONTEXT
+#define __TX_XPATH_SINGLENODE_CONTEXT
+
+#include "mozilla/Attributes.h"
+#include "txIXPathContext.h"
+
+class txSingleNodeContext : public txIEvalContext {
+ public:
+  txSingleNodeContext(const txXPathNode& aContextNode,
+                      txIMatchContext* aContext)
+      : mNode(aContextNode), mInner(aContext) {
+    NS_ASSERTION(aContext, "txIMatchContext must be given");
+  }
+
+  nsresult getVariable(int32_t aNamespace, nsAtom* aLName,
+                       txAExprResult*& aResult) override {
+    NS_ASSERTION(mInner, "mInner is null!!!");
+    return mInner->getVariable(aNamespace, aLName, aResult);
+  }
+
+  nsresult isStripSpaceAllowed(const txXPathNode& aNode,
+                               bool& aAllowed) override {
+    NS_ASSERTION(mInner, "mInner is null!!!");
+    return mInner->isStripSpaceAllowed(aNode, aAllowed);
+  }
+
+  void* getPrivateContext() override {
+    NS_ASSERTION(mInner, "mInner is null!!!");
+    return mInner->getPrivateContext();
+  }
+
+  txResultRecycler* recycler() override {
+    NS_ASSERTION(mInner, "mInner is null!!!");
+    return mInner->recycler();
+  }
+
+  void receiveError(const nsAString& aMsg, nsresult aRes) override {
+    NS_ASSERTION(mInner, "mInner is null!!!");
+#ifdef DEBUG
+    nsAutoString error(u"forwarded error: "_ns);
+    error.Append(aMsg);
+    mInner->receiveError(error, aRes);
+#else
+    mInner->receiveError(aMsg, aRes);
+#endif
+  }
+
+  const txXPathNode& getContextNode() override { return mNode; }
+
+  uint32_t size() override { return 1; }
+
+  uint32_t position() override { return 1; }
+
+ private:
+  const txXPathNode& mNode;
+  txIMatchContext* mInner;
+};
+
+#endif  // __TX_XPATH_SINGLENODE_CONTEXT