1 files changed, 103 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/amqp/ListReader.h b/qpid/cpp/src/qpid/amqp/ListReader.h
new file mode 100644
index 0000000000..fafe2a1f9c
--- /dev/null
+++ b/qpid/cpp/src/qpid/amqp/ListReader.h
@@ -0,0 +1,103 @@
+#ifndef QPID_AMQP_LISTREADER_H
+#define QPID_AMQP_LISTREADER_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 "Reader.h"
+
+namespace qpid {
+namespace amqp {
+
+/**
+ * Utility to assist in reading AMQP encoded lists
+ */
+class ListReader : public Reader
+{
+  public:
+    ListReader() : index(0), level(0) {}
+    virtual ~ListReader() {}
+    virtual void onNull(const Descriptor* descriptor) { getReader().onNull(descriptor); }
+    virtual void onBoolean(bool v, const Descriptor* descriptor) { getReader().onBoolean(v, descriptor); }
+    virtual void onUByte(uint8_t v, const Descriptor* descriptor) { getReader().onUByte(v, descriptor); }
+    virtual void onUShort(uint16_t v, const Descriptor* descriptor) { getReader().onUShort(v, descriptor); }
+    virtual void onUInt(uint32_t v, const Descriptor* descriptor) { getReader().onUInt(v, descriptor); }
+    virtual void onULong(uint64_t v, const Descriptor* descriptor) { getReader().onULong(v, descriptor); }
+    virtual void onByte(int8_t v, const Descriptor* descriptor) { getReader().onByte(v, descriptor); }
+    virtual void onShort(int16_t v, const Descriptor* descriptor) { getReader().onShort(v, descriptor); }
+    virtual void onInt(int32_t v, const Descriptor* descriptor) { getReader().onInt(v, descriptor); }
+    virtual void onLong(int64_t v, const Descriptor* descriptor) { getReader().onLong(v, descriptor); }
+    virtual void onFloat(float v, const Descriptor* descriptor) { getReader().onFloat(v, descriptor); }
+    virtual void onDouble(double v, const Descriptor* descriptor) { getReader().onDouble(v, descriptor); }
+    virtual void onUuid(const CharSequence& v, const Descriptor* descriptor) { getReader().onUuid(v, descriptor); }
+    virtual void onTimestamp(int64_t v, const Descriptor* descriptor) { getReader().onTimestamp(v, descriptor); }
+
+    virtual void onBinary(const CharSequence& v, const Descriptor* descriptor) { getReader().onBinary(v, descriptor); }
+    virtual void onString(const CharSequence& v, const Descriptor* descriptor) { getReader().onString(v, descriptor); }
+    virtual void onSymbol(const CharSequence& v, const Descriptor* descriptor) { getReader().onSymbol(v, descriptor); }
+
+    virtual bool onStartList(uint32_t count, const CharSequence& elements, const CharSequence& all, const Descriptor* descriptor)
+    {
+        ++level;
+        getReader().onStartList(count, elements, all, descriptor);
+        return false;
+    }
+    virtual void onEndList(uint32_t count, const Descriptor* descriptor)
+    {
+        --level;
+        getReader().onEndList(count, descriptor);
+    }
+    virtual bool onStartMap(uint32_t count, const CharSequence& elements, const CharSequence& all, const Descriptor* descriptor)
+    {
+        ++level;
+        getReader().onStartMap(count, elements, all, descriptor);
+        return false;
+    }
+    virtual void onEndMap(uint32_t count, const Descriptor* descriptor)
+    {
+        --level;
+        getReader().onEndList(count, descriptor);
+    }
+    virtual bool onStartArray(uint32_t count, const CharSequence& v, const Constructor& c, const Descriptor* descriptor)
+    {
+        ++level;
+        getReader().onStartArray(count, v, c, descriptor);
+        return false;
+    }
+    virtual void onEndArray(uint32_t count, const Descriptor* descriptor)
+    {
+        --level;
+        getReader().onEndList(count, descriptor);
+    }
+  private:
+    size_t index;
+    size_t level;
+    Reader& getReader()
+    {
+        Reader& r = getReader(index);
+        if (level == 0) ++index;
+        return r;
+    }
+  protected:
+    virtual Reader& getReader(size_t i) = 0;
+};
+}} // namespace qpid::amqp
+
+#endif  /*!QPID_AMQP_LISTREADER_H*/