1 files changed, 49 insertions, 0 deletions
diff --git a/searchsummary/src/tests/extractkeywords/simplequerystack.h b/searchsummary/src/tests/extractkeywords/simplequerystack.h
new file mode 100644
index 00000000000..7347c66c925
--- /dev/null
+++ b/searchsummary/src/tests/extractkeywords/simplequerystack.h
@@ -0,0 +1,49 @@
+// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+
+#pragma once
+
+#include "simplequerystackitem.h"
+#include <vespa/searchlib/util/rawbuf.h>
+#include <vespa/vespalib/stllike/string.h>
+
+namespace search {
+
+/**
+ * A stack of SimpleQueryStackItems.
+ *
+ * A simple stack consisting of a list of SimpleQueryStackItems.
+ * It is able to generate a binary encoding of itself
+ * to a RawBuf.
+ */
+class SimpleQueryStack
+{
+private:
+    /** The top of the stack. */
+    SimpleQueryStackItem *_stack;
+
+public:
+    SimpleQueryStack(const SimpleQueryStack &) = delete;
+    SimpleQueryStack& operator=(const SimpleQueryStack &) = delete;
+    /**
+     * Constructor for SimpleQueryStack.
+     */
+    SimpleQueryStack();
+    /**
+     * Destructor for SimpleQueryStack.
+     */
+    ~SimpleQueryStack();
+    /**
+     * Push an item on the stack.
+     * @param item The SimpleQueryStackItem to push.
+     */
+    void Push(SimpleQueryStackItem *item);
+
+    /**
+     * Encode the contents of the stack in a binary buffer.
+     * @param buf Pointer to a buffer containing the encoded contents.
+     */
+    void AppendBuffer(RawBuf *buf) const;
+};
+
+} // namespace search
+