1 files changed, 50 insertions, 0 deletions
diff --git a/dom/xslt/xpath/txPredicatedNodeTest.cpp b/dom/xslt/xpath/txPredicatedNodeTest.cpp
new file mode 100644
index 0000000000..6c3fd33cf5
--- /dev/null
+++ b/dom/xslt/xpath/txPredicatedNodeTest.cpp
@@ -0,0 +1,50 @@
+/* -*- 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/. */
+
+#include "txExpr.h"
+#include "txExprResult.h"
+#include "txSingleNodeContext.h"
+
+txPredicatedNodeTest::txPredicatedNodeTest(txNodeTest* aNodeTest,
+                                           Expr* aPredicate)
+    : mNodeTest(aNodeTest), mPredicate(aPredicate) {
+  NS_ASSERTION(!mPredicate->isSensitiveTo(Expr::NODESET_CONTEXT),
+               "predicate must not be context-nodeset-sensitive");
+}
+
+nsresult txPredicatedNodeTest::matches(const txXPathNode& aNode,
+                                       txIMatchContext* aContext,
+                                       bool& aMatched) {
+  nsresult rv = mNodeTest->matches(aNode, aContext, aMatched);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (!aMatched) {
+    return NS_OK;
+  }
+
+  txSingleNodeContext context(aNode, aContext);
+  RefPtr<txAExprResult> res;
+  rv = mPredicate->evaluate(&context, getter_AddRefs(res));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  aMatched = res->booleanValue();
+  return NS_OK;
+}
+
+double txPredicatedNodeTest::getDefaultPriority() { return 0.5; }
+
+bool txPredicatedNodeTest::isSensitiveTo(Expr::ContextSensitivity aContext) {
+  return mNodeTest->isSensitiveTo(aContext) ||
+         mPredicate->isSensitiveTo(aContext);
+}
+
+#ifdef TX_TO_STRING
+void txPredicatedNodeTest::toString(nsAString& aDest) {
+  mNodeTest->toString(aDest);
+  aDest.Append(char16_t('['));
+  mPredicate->toString(aDest);
+  aDest.Append(char16_t(']'));
+}
+#endif