1 files changed, 80 insertions, 0 deletions
diff --git a/cpp/src/qpid/amqp/Reader.h b/cpp/src/qpid/amqp/Reader.h
new file mode 100644
index 0000000000..64019d1521
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+++ b/cpp/src/qpid/amqp/Reader.h
@@ -0,0 +1,80 @@
+#ifndef QPID_AMQP_READER_H
+#define QPID_AMQP_READER_H
+
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+#include "qpid/sys/IntegerTypes.h"
+#include <stddef.h>
+
+namespace qpid {
+namespace amqp {
+struct CharSequence;
+struct Constructor;
+struct Descriptor;
+
+/**
+ * Allows an event-driven, callback-based approach to processing an
+ * AMQP encoded data stream. By sublassing and implementing the
+ * methods of interest, readers can be constructed for different
+ * contexts.
+ */
+class Reader
+{
+  public:
+    virtual ~Reader() {}
+    virtual void onNull(const Descriptor*) {}
+    virtual void onBoolean(bool, const Descriptor*) {}
+    virtual void onUByte(uint8_t, const Descriptor*) {}
+    virtual void onUShort(uint16_t, const Descriptor*) {}
+    virtual void onUInt(uint32_t, const Descriptor*) {}
+    virtual void onULong(uint64_t, const Descriptor*) {}
+    virtual void onByte(int8_t, const Descriptor*) {}
+    virtual void onShort(int16_t, const Descriptor*) {}
+    virtual void onInt(int32_t, const Descriptor*) {}
+    virtual void onLong(int64_t, const Descriptor*) {}
+    virtual void onFloat(float, const Descriptor*) {}
+    virtual void onDouble(double, const Descriptor*) {}
+    virtual void onUuid(const CharSequence&, const Descriptor*) {}
+    virtual void onTimestamp(int64_t, const Descriptor*) {}
+
+    virtual void onBinary(const CharSequence&, const Descriptor*) {}
+    virtual void onString(const CharSequence&, const Descriptor*) {}
+    virtual void onSymbol(const CharSequence&, const Descriptor*) {}
+
+    /**
+     * @return true to get elements of the compound value, false
+     * to skip over it
+     */
+    virtual bool onStartList(uint32_t /*count*/, const CharSequence&, const Descriptor*) { return true; }
+    virtual bool onStartMap(uint32_t /*count*/, const CharSequence&, const Descriptor*) { return true; }
+    virtual bool onStartArray(uint32_t /*count*/, const CharSequence&, const Constructor&, const Descriptor*) { return true; }
+    virtual void onEndList(uint32_t /*count*/, const Descriptor*) {}
+    virtual void onEndMap(uint32_t /*count*/, const Descriptor*) {}
+    virtual void onEndArray(uint32_t /*count*/, const Descriptor*) {}
+
+    virtual void onDescriptor(const Descriptor&, const char*) {}
+
+    virtual bool proceed() { return true; }
+  private:
+};
+}} // namespace qpid::amqp
+
+#endif  /*!QPID_AMQP_READER_H*/