Fix implementation of command-setter.

    * include/CMakeLists.txt,
    * include/dynamic-graph/command-setter.h: new,
    * include/dynamic-graph/command-setter.t.cpp: new,
    * include/dynamic-graph/value.h.

include/CMakeLists.txt

@@ -68,7 +68,8 @@ tracer-real-time.h
 
 command.h
 value.h
-parameter.h
+command-setter.h
+command-setter.t.cpp
 )
 
 # Recreate correct path for the headers

include/dynamic-graph/command-setter.h

+//
+// Copyright 2010 CNRS
+//
+// Author: Florent Lamiraux
+//
+// This file is part of dynamic-graph.
+// dynamic-graph is free software: you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+// dynamic-graph is distributed in the hope that it will be
+// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Lesser General Public License for more details.  You should
+// have received a copy of the GNU Lesser General Public License along
+// with dynamic-graph.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef DYNAMIC_GRAPH_COMMAND_SETTER_H
+#define DYNAMIC_GRAPH_COMMAND_SETTER_H
+
+#include "dynamic-graph/command.h"
+
+namespace dynamicgraph {
+  namespace command {
+
+    ///
+    /// Command that calls a parameter setter function
+    ///
+    template <class E, typename T>
+    class Setter : public Command {
+    public:
+      /// Pointer to method that sets paramter of type T
+      typedef void (E::*SetterMethod) (const T&);
+      /// Constructor
+      Setter(E& entity, SetterMethod);
+      
+    protected:
+      virtual Value doExecute();
+
+    private:
+      static const std::vector<Value::Type> typeVector();
+      SetterMethod setterMethod_;
+    };
+  } // namespace command
+} // namespace dynamicgraph
+
+#include "dynamic-graph/command-setter.t.cpp"
+#endif //DYNAMIC_GRAPH_COMMAND_SETTER_H
+

include/dynamic-graph/command-setter.t.cpp

+//
+// Copyright 2010 CNRS
+//
+// Author: Florent Lamiraux
+//
+// This file is part of dynamic-graph.
+// dynamic-graph is free software: you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+// dynamic-graph is distributed in the hope that it will be
+// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Lesser General Public License for more details.  You should
+// have received a copy of the GNU Lesser General Public License along
+// with dynamic-graph.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef DYNAMIC_GRAPH_COMMAND_SETTER_T_CPP
+#define DYNAMIC_GRAPH_COMMAND_SETTER_T_CPP
+
+#include <sstream>
+
+namespace dynamicgraph {
+  class Entity;
+  namespace command {
+
+    template <class E, typename T>
+    const std::vector<Value::Type>  Setter<E, T>::typeVector()
+    {
+      std::vector<Value::Type> result;
+      if (typeid(T) == typeid(int)) {
+	result.push_back(Value::INT);
+      } else if (typeid(T) == typeid(double)) {
+	result.push_back(Value::DOUBLE);
+      } else if (typeid(T) == typeid(std::string)) {
+	result.push_back(Value::STRING);
+      } else {
+	std::stringstream ss;
+	ss << "Type " << typeid(T).name() << " not supported.";
+	throw ExceptionAbstract(ExceptionAbstract::TOOLS,
+				ss.str());
+      }
+      return result;
+    }
+
+    template <class E, typename T>
+    Setter<E, T>::Setter(E& entity, SetterMethod setterMethod) :
+      Command(entity, typeVector()),
+      setterMethod_(setterMethod)
+    {
+    }
+
+    template <class E, typename T>
+    Value Setter<E, T>::doExecute()
+    {
+      const std::vector<Value>& values = getParameterValues();
+      // Get parameter
+      T value = values[0].value();
+      E& entity = static_cast<E&>(owner());
+      (entity.*setterMethod_)(value);
+      return Value();
+    }
+  } // namespace command
+} // namespace dynamicgraph
+
+#endif // DYNAMIC_GRAPH_COMMAND_SETTER_T_CPP

include/dynamic-graph/value.h

@@ -58,7 +58,16 @@ namespace dynamicgraph {
       Type type() const;
 
       /// Return the value as a castable value into the approriate type
-      /// double x = value();
+      ///
+      /// For instance,
+      /// \code
+      /// Value v1(5.0); // v1 is of type double
+      /// Value v2(3);   // v2 is of type int
+      /// double x1 = v1.value();
+      /// double x2 = v2.value();
+      /// \endcode
+      /// The first assignment will succeed, while the second one will throw
+      /// an exception.
       const AnyType value () const;
       /// Return the name of the type
       static std::string typeName(Type type);