1 files changed, 121 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/broker/SelectorValue.h b/qpid/cpp/src/qpid/broker/SelectorValue.h
new file mode 100644
index 0000000000..3a731fd000
--- /dev/null
+++ b/qpid/cpp/src/qpid/broker/SelectorValue.h
@@ -0,0 +1,121 @@
+#ifndef QPID_BROKER_SELECTORVALUE_H
+#define QPID_BROKER_SELECTORVALUE_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 <iosfwd>
+#include <string>
+
+namespace qpid {
+namespace broker {
+
+enum BoolOrNone {
+    BN_FALSE = false,
+    BN_TRUE = true,
+    BN_UNKNOWN
+};
+
+// The user of the Value class for strings must ensure that
+// the string has a lifetime longer than the string used and
+// is responsible for managing its lifetime.
+class Value {
+public:
+    union {
+        bool               b;
+        int64_t            i;
+        double             x;
+        const std::string* s;
+    };
+    enum {
+        T_UNKNOWN,
+        T_BOOL,
+        T_STRING,
+        T_EXACT,
+        T_INEXACT
+    } type;
+
+    // Default copy contructor
+    // Default assignment operator
+    // Default destructor
+    Value() :
+        type(T_UNKNOWN)
+    {}
+
+    Value(const std::string& s0) :
+        s(&s0),
+        type(T_STRING)
+    {}
+
+    Value(const int64_t i0) :
+        i(i0),
+        type(T_EXACT)
+    {}
+
+    Value(const int32_t i0) :
+        i(i0),
+        type(T_EXACT)
+    {}
+
+    Value(const double x0) :
+        x(x0),
+        type(T_INEXACT)
+    {}
+
+    Value(bool b0) :
+        b(b0),
+        type(T_BOOL)
+    {}
+
+    Value(BoolOrNone bn) :
+        b(bn),
+        type(bn==BN_UNKNOWN ? T_UNKNOWN : T_BOOL)
+    {}
+};
+
+inline bool unknown(const Value& v) {
+    return v.type == Value::T_UNKNOWN;
+}
+
+inline bool numeric(const Value& v) {
+    return v.type == Value::T_EXACT || v.type == Value::T_INEXACT;
+}
+
+std::ostream& operator<<(std::ostream& os, const Value& v);
+
+bool operator==(const Value&, const Value&);
+bool operator!=(const Value&, const Value&);
+bool operator<(const Value&, const Value&);
+bool operator>(const Value&, const Value&);
+bool operator<=(const Value&, const Value&);
+bool operator>=(const Value&, const Value&);
+
+Value operator+(const Value&, const Value&);
+Value operator-(const Value&, const Value&);
+Value operator*(const Value&, const Value&);
+Value operator/(const Value&, const Value&);
+Value operator-(const Value&);
+
+}}
+
+#endif