1 files changed, 73 insertions, 0 deletions
diff --git a/qpid/cpp/src/qmf/Expression.h b/qpid/cpp/src/qmf/Expression.h
new file mode 100644
index 0000000000..6fbfdbc4ba
--- /dev/null
+++ b/qpid/cpp/src/qmf/Expression.h
@@ -0,0 +1,73 @@
+#ifndef _QMF_EXPRESSION_H_
+#define _QMF_EXPRESSION_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/types/Variant.h"
+#include <string>
+#include <list>
+#include <boost/shared_ptr.hpp>
+
+namespace qmf {
+
+    enum LogicalOp {
+    LOGICAL_ID  = 1,
+    LOGICAL_NOT = 2,
+    LOGICAL_AND = 3,
+    LOGICAL_OR  = 4
+    };
+
+    enum BooleanOp {
+    BOOL_EQ       = 1,
+    BOOL_NE       = 2,
+    BOOL_LT       = 3,
+    BOOL_LE       = 4,
+    BOOL_GT       = 5,
+    BOOL_GE       = 6,
+    BOOL_RE_MATCH = 7,
+    BOOL_EXISTS   = 8,
+    BOOL_TRUE     = 9,
+    BOOL_FALSE    = 10
+    };
+
+    class Expression {
+    public:
+        Expression(const qpid::types::Variant::List& expr);
+        bool evaluate(const qpid::types::Variant::Map& data) const;
+    private:
+        LogicalOp logicalOp;
+        BooleanOp boolOp;
+        int operandCount;
+        qpid::types::Variant operands[2];
+        bool quoted[2];
+        std::list<boost::shared_ptr<Expression> > expressionList;
+
+        bool boolEval(const qpid::types::Variant::Map& data) const;
+        bool lessThan(const qpid::types::Variant& left, const qpid::types::Variant& right) const;
+        bool lessEqual(const qpid::types::Variant& left, const qpid::types::Variant& right) const;
+        bool greaterThan(const qpid::types::Variant& left, const qpid::types::Variant& right) const;
+        bool greaterEqual(const qpid::types::Variant& left, const qpid::types::Variant& right) const;
+    };
+
+}
+
+#endif
+