--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ossrv_pub/boost_apis/boost/dynamic_property_map.hpp Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,362 @@
+#ifndef DYNAMIC_PROPERTY_MAP_RG09302004_HPP
+#define DYNAMIC_PROPERTY_MAP_RG09302004_HPP
+
+// Copyright 2004-5 The Trustees of Indiana University.
+
+// Use, modification and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+// dynamic_property_map.hpp -
+// Support for runtime-polymorphic property maps. This header is factored
+// out of Doug Gregor's routines for reading GraphML files for use in reading
+// GraphViz graph files.
+
+// Authors: Doug Gregor
+// Ronald Garcia
+//
+
+
+#include <boost/config.hpp>
+#include <boost/property_map.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/any.hpp>
+#include <boost/function/function3.hpp>
+#include <boost/type_traits/is_convertible.hpp>
+#include <typeinfo>
+#include <boost/mpl/bool.hpp>
+#include <stdexcept>
+#include <sstream>
+#include <map>
+#include <boost/type.hpp>
+
+namespace boost {
+
+namespace detail {
+
+ // read_value -
+ // A wrapper around lexical_cast, which does not behave as
+ // desired for std::string types.
+ template<typename Value>
+ inline Value read_value(const std::string& value)
+ { return boost::lexical_cast<Value>(value); }
+
+ template<>
+ inline std::string read_value<std::string>(const std::string& value)
+ { return value; }
+
+}
+
+
+// dynamic_property_map -
+// This interface supports polymorphic manipulation of property maps.
+class dynamic_property_map
+{
+public:
+ virtual ~dynamic_property_map() { }
+
+ virtual boost::any get(const any& key) = 0;
+ virtual std::string get_string(const any& key) = 0;
+ virtual void put(const any& key, const any& value) = 0;
+ virtual const std::type_info& key() const = 0;
+ virtual const std::type_info& value() const = 0;
+};
+
+
+//////////////////////////////////////////////////////////////////////
+// Property map exceptions
+//////////////////////////////////////////////////////////////////////
+
+struct dynamic_property_exception : public std::exception {
+ virtual ~dynamic_property_exception() throw() {}
+ virtual const char* what() const throw() = 0;
+};
+
+struct property_not_found : public dynamic_property_exception {
+ std::string property;
+ mutable std::string statement;
+ property_not_found(const std::string& property) : property(property) {}
+ virtual ~property_not_found() throw() {}
+
+ const char* what() const throw() {
+ if(statement.empty())
+ statement =
+ std::string("Property not found: ") + property + ".";
+
+ return statement.c_str();
+ }
+};
+
+struct dynamic_get_failure : public dynamic_property_exception {
+ std::string property;
+ mutable std::string statement;
+ dynamic_get_failure(const std::string& property) : property(property) {}
+ virtual ~dynamic_get_failure() throw() {}
+
+ const char* what() const throw() {
+ if(statement.empty())
+ statement =
+ std::string(
+ "dynamic property get cannot retrieve value for property: ")
+ + property + ".";
+
+ return statement.c_str();
+ }
+};
+
+struct dynamic_const_put_error : public dynamic_property_exception {
+ virtual ~dynamic_const_put_error() throw() {}
+
+ const char* what() const throw() {
+ return "Attempt to put a value into a const property map: ";
+ }
+};
+
+
+namespace detail {
+
+//
+// dynamic_property_map_adaptor -
+// property-map adaptor to support runtime polymorphism.
+template<typename PropertyMap>
+class dynamic_property_map_adaptor : public dynamic_property_map
+{
+ typedef typename property_traits<PropertyMap>::key_type key_type;
+ typedef typename property_traits<PropertyMap>::value_type value_type;
+ typedef typename property_traits<PropertyMap>::category category;
+
+ // do_put - overloaded dispatches from the put() member function.
+ // Attempts to "put" to a property map that does not model
+ // WritablePropertyMap result in a runtime exception.
+
+ // in_value must either hold an object of value_type or a string that
+ // can be converted to value_type via iostreams.
+ void do_put(const any& in_key, const any& in_value, mpl::bool_<true>)
+ {
+#if !(defined(__GNUC__) && (__GNUC__ == 2) && (__GNUC_MINOR__ == 95))
+ using boost::put;
+#endif
+
+ key_type key = any_cast<key_type>(in_key);
+ if (in_value.type() == typeid(value_type)) {
+#if defined(__GNUC__) && (__GNUC__ == 2) && (__GNUC_MINOR__ == 95)
+ boost::put(property_map, key, any_cast<value_type>(in_value));
+#else
+ put(property_map, key, any_cast<value_type>(in_value));
+#endif
+ } else {
+ // if in_value is an empty string, put a default constructed value_type.
+ std::string v = any_cast<std::string>(in_value);
+ if (v.empty()) {
+#if defined(__GNUC__) && (__GNUC__ == 2) && (__GNUC_MINOR__ == 95)
+ boost::put(property_map, key, value_type());
+#else
+ put(property_map, key, value_type());
+#endif
+ } else {
+#if defined(__GNUC__) && (__GNUC__ == 2) && (__GNUC_MINOR__ == 95)
+ boost::put(property_map, key, detail::read_value<value_type>(v));
+#else
+ put(property_map, key, detail::read_value<value_type>(v));
+#endif
+ }
+ }
+ }
+
+ void do_put(const any&, const any&, mpl::bool_<false>)
+ {
+ throw dynamic_const_put_error();
+ }
+
+public:
+ explicit dynamic_property_map_adaptor(const PropertyMap& property_map)
+ : property_map(property_map) { }
+
+ virtual boost::any get(const any& key)
+ {
+#if defined(__GNUC__) && (__GNUC__ == 2) && (__GNUC_MINOR__ == 95)
+ return boost::get(property_map, any_cast<key_type>(key));
+#else
+ using boost::get;
+
+ return get(property_map, any_cast<key_type>(key));
+#endif
+ }
+
+ virtual std::string get_string(const any& key)
+ {
+#if defined(__GNUC__) && (__GNUC__ == 2) && (__GNUC_MINOR__ == 95)
+ std::ostringstream out;
+ out << boost::get(property_map, any_cast<key_type>(key));
+ return out.str();
+#else
+ using boost::get;
+
+ std::ostringstream out;
+ out << get(property_map, any_cast<key_type>(key));
+ return out.str();
+#endif
+ }
+
+ virtual void put(const any& in_key, const any& in_value)
+ {
+ do_put(in_key, in_value,
+ mpl::bool_<(is_convertible<category*,
+ writable_property_map_tag*>::value)>());
+ }
+
+ virtual const std::type_info& key() const { return typeid(key_type); }
+ virtual const std::type_info& value() const { return typeid(value_type); }
+
+ PropertyMap& base() { return property_map; }
+ const PropertyMap& base() const { return property_map; }
+
+private:
+ PropertyMap property_map;
+};
+
+} // namespace detail
+
+//
+// dynamic_properties -
+// container for dynamic property maps
+//
+struct dynamic_properties
+{
+ typedef std::multimap<std::string, dynamic_property_map*>
+ property_maps_type;
+ typedef boost::function3<std::auto_ptr<dynamic_property_map>,
+ const std::string&,
+ const boost::any&,
+ const boost::any&> generate_fn_type;
+public:
+
+ typedef property_maps_type::iterator iterator;
+ typedef property_maps_type::const_iterator const_iterator;
+
+ dynamic_properties() : generate_fn() { }
+ dynamic_properties(const generate_fn_type& g) : generate_fn(g) {}
+
+ ~dynamic_properties()
+ {
+ for (property_maps_type::iterator i = property_maps.begin();
+ i != property_maps.end(); ++i) {
+ delete i->second;
+ }
+ }
+
+ template<typename PropertyMap>
+ dynamic_properties&
+ property(const std::string& name, PropertyMap property_map)
+ {
+ // Tbd: exception safety
+ std::auto_ptr<dynamic_property_map> pm(
+ new detail::dynamic_property_map_adaptor<PropertyMap>(property_map));
+ property_maps_type::iterator i =
+ property_maps.insert(property_maps_type::value_type(name, 0));
+ i->second = pm.release();
+
+ return *this;
+ }
+
+ iterator begin() { return property_maps.begin(); }
+ const_iterator begin() const { return property_maps.begin(); }
+ iterator end() { return property_maps.end(); }
+ const_iterator end() const { return property_maps.end(); }
+
+ iterator lower_bound(const std::string& name)
+ { return property_maps.lower_bound(name); }
+
+ const_iterator lower_bound(const std::string& name) const
+ { return property_maps.lower_bound(name); }
+
+ void
+ insert(const std::string& name, std::auto_ptr<dynamic_property_map> pm)
+ {
+ property_maps.insert(property_maps_type::value_type(name, pm.release()));
+ }
+
+ template<typename Key, typename Value>
+ std::auto_ptr<dynamic_property_map>
+ generate(const std::string& name, const Key& key, const Value& value)
+ {
+ if(!generate_fn) {
+ throw property_not_found(name);
+ } else {
+ return generate_fn(name,key,value);
+ }
+ }
+
+private:
+ property_maps_type property_maps;
+ generate_fn_type generate_fn;
+};
+
+template<typename Key, typename Value>
+bool
+put(const std::string& name, dynamic_properties& dp, const Key& key,
+ const Value& value)
+{
+ for (dynamic_properties::iterator i = dp.lower_bound(name);
+ i != dp.end() && i->first == name; ++i) {
+ if (i->second->key() == typeid(key)) {
+ i->second->put(key, value);
+ return true;
+ }
+ }
+
+ std::auto_ptr<dynamic_property_map> new_map = dp.generate(name, key, value);
+ if (new_map.get()) {
+ new_map->put(key, value);
+ dp.insert(name, new_map);
+ return true;
+ } else {
+ return false;
+ }
+}
+
+#ifndef BOOST_NO_EXPLICIT_FUNCTION_TEMPLATE_ARGUMENTS
+template<typename Value, typename Key>
+Value
+get(const std::string& name, const dynamic_properties& dp, const Key& key)
+{
+ for (dynamic_properties::const_iterator i = dp.lower_bound(name);
+ i != dp.end() && i->first == name; ++i) {
+ if (i->second->key() == typeid(key))
+ return any_cast<Value>(i->second->get(key));
+ }
+
+ throw dynamic_get_failure(name);
+}
+#endif
+
+template<typename Value, typename Key>
+Value
+get(const std::string& name, const dynamic_properties& dp, const Key& key, type<Value>)
+{
+ for (dynamic_properties::const_iterator i = dp.lower_bound(name);
+ i != dp.end() && i->first == name; ++i) {
+ if (i->second->key() == typeid(key))
+ return any_cast<Value>(i->second->get(key));
+ }
+
+ throw dynamic_get_failure(name);
+}
+
+template<typename Key>
+std::string
+get(const std::string& name, const dynamic_properties& dp, const Key& key)
+{
+ for (dynamic_properties::const_iterator i = dp.lower_bound(name);
+ i != dp.end() && i->first == name; ++i) {
+ if (i->second->key() == typeid(key))
+ return i->second->get_string(key);
+ }
+
+ throw dynamic_get_failure(name);
+}
+
+
+}
+
+#endif // DYNAMIC_PROPERTY_MAP_RG09302004_HPP