OpenSceneGraph/include/osgIntrospection/MethodInfo
2005-03-14 09:28:31 +00:00

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#ifndef OSGINTROSPECTION_METHODINFO_
#define OSGINTROSPECTION_METHODINFO_
#include <osgIntrospection/Export>
#include <osgIntrospection/CustomAttributeProvider>
#include <osgIntrospection/Value>
#include <osgIntrospection/Exceptions>
#include <osgIntrospection/ParameterInfo>
#include <cstdarg>
#include <string>
#include <vector>
namespace osgIntrospection
{
class Type;
/// Class MethodInfo stores information about a class method. It is an
/// abstract class, so it must be derived to provide the actual
/// implementation of isConst() and invoke(). Instances of this class
/// can't be modified after their creation.
class OSGINTROSPECTION_EXPORT MethodInfo: public CustomAttributeProvider
{
public:
/// Direct initialization constructor.
inline MethodInfo(const std::string &qname, const Type &decltype, const Type &rtype, const ParameterInfoList &plist);
/// Returns the Type object associated to the type that
/// declares the reflected method.
inline virtual const Type &getDeclaringType() const;
/// Returns the name of the reflected method.
inline virtual const std::string &getName() const;
/// Returns the return type of the reflected method.
inline const Type &getReturnType() const;
/// Returns a list of objects that describe the reflected
/// method's parameters.
inline const ParameterInfoList &getParameters() const;
/// Returns whether the reflected method is const or not.
virtual bool isConst() const = 0;
/// Invokes the reflected method dynamically on the given const
/// instance, passing it the arguments as a list of Value objects.
virtual Value invoke(const Value &instance, ValueList &args) const = 0;
/// Invokes the reflected method dynamically on the given instance,
/// passing it the arguments as a list of Value objects.
virtual Value invoke(Value &instance, ValueList &args) const = 0;
/// Invokes the reflected method dynamically on the given const
/// instance, without arguments.
inline Value invoke(const Value &instance) const;
/// Invokes the reflected method dynamically on the given
/// instance, without arguments.
inline Value invoke(Value &instance) const;
private:
inline std::string strip_namespace(const std::string &s) const;
virtual void getInheritedProviders(CustomAttributeProviderList &providers) const;
std::string name_;
const Type &decltype_;
const Type &rtype_;
ParameterInfoList params_;
};
// INLINE METHODS
inline MethodInfo::MethodInfo(const std::string &qname, const Type &decltype, const Type &rtype, const ParameterInfoList &plist)
: CustomAttributeProvider(),
decltype_(decltype),
rtype_(rtype),
params_(plist)
{
name_ = strip_namespace(qname);
}
inline std::string MethodInfo::strip_namespace(const std::string &s) const
{
std::string::size_type p = s.rfind("::");
if (p != std::string::npos)
return s.substr(p+2);
return s;
}
inline const std::string &MethodInfo::getName() const
{
return name_;
}
inline const Type &MethodInfo::getDeclaringType() const
{
return decltype_;
}
inline const Type &MethodInfo::getReturnType() const
{
return rtype_;
}
inline const ParameterInfoList &MethodInfo::getParameters() const
{
return params_;
}
inline Value MethodInfo::invoke(const Value &instance) const
{
ValueList args;
return invoke(instance, args);
}
inline Value MethodInfo::invoke(Value &instance) const
{
ValueList args;
return invoke(instance, args);
}
}
#endif