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fiber/libs/extension/scripts/GenerateHeaders.py
Oliver Kowalke 39ec793737 initial checkin
2011-02-09 18:41:35 +01:00

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16 KiB
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# Boost.Extension - GenerateHeaders script
# Use for generation of factory.h and shared_library.h
#
# Copyright 2007 Jeremy Pack
#
# See http://www.boost.org/ for latest version.
#
import sys
class header_generator:
def __init__(self, max_params):
self.max_params = max_params
def generate(self):
self.generate_factory_hpp()
self.generate_counted_factory_hpp()
self.generate_shared_library_hpp()
self.generate_factory_map_hpp("factory", "", "", "", """
factory_container() {}
// factory_container(basic_factory_map & z)
// :std::list<factory<Interface, Info, Param1, Param2, Param3, Param4, Param5, Param6> >(z.get<Interface, Param1, Param2, Param3, Param4, Param5, Param6>()){}
virtual ~factory_container(){}
""")
self.generate_factory_map_hpp("counted_factory",
"\n f.set_library(current_library_.c_str());\n f.set_counter(current_counter_);",
"\n std::string current_library_;\n int default_counter_;\n int * current_counter_;",
"\n virtual bool remove_library(const char * library_name) = 0;", """
int * counter_;
factory_container(int * counter) : counter_(counter) {++(*counter_);}
virtual ~factory_container() {--(*counter_);}
virtual bool remove_library(const char * library_name)
{
for (typename std::list<counted_factory<Interface, Info, Param1, Param2, Param3,
Param4, Param5, Param6> >::iterator it = this->begin();
it != this->end();)
{
if (strcmp(it->library(), library_name) == 0)
this->erase(it++);
else
++it;
}
return this->size() == 0;
}""",
"\n basic_counted_factory_map() : default_counter_(0), current_counter_(&default_counter_){}",
"current_counter_")
def template_header(self, start_string, start, count, add_void):
if add_void:
v = " = void"
else:
v = ""
center = ", ".join(start + ["class Param" + str(i) + v
for i in range(1, count + 1)])
out_str = "".join([start_string, center, ">\n"])
return out_str
def nameless_param_list(self, count, start):
return ", ".join(start + ["Param" + str(i) for i in range(1, count+1)])
def param_names(self, count, start):
return ", ".join(start + ["p" + str(i) for i in range(1, count+1)])
def named_param_list(self, count, start):
return ", ".join(start + ["".join(["Param", str(i), " p", str(i)])
for i in range(1, count+1)])
def generate_factory_hpp(self):
out = open('../../../boost/extension/factory.hpp', mode='w')
out.write("""/* (C) Copyright Jeremy Pack 2007
* Distributed under 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)
*/
#ifndef BOOST_EXTENSION_FACTORY_HPP
#define BOOST_EXTENSION_FACTORY_HPP
#include <string>
namespace boost{namespace extensions{
""")
for i in range(self.max_params, -1, -1):
out.write(self.template_header('template <',
['class Interface', 'class Info'],
i, i == self.max_params))
if i != self.max_params:
factory_template = ("".join(["<",
self.nameless_param_list(i, ["Interface", "Info"]),
">\n"]))
else:
factory_template = "\n"
out.write("".join(["class factory",
factory_template,
"""{
protected:
class generic_factory_function
{
public:
virtual ~generic_factory_function(){}
virtual Interface * operator()(""",
self.nameless_param_list(i, []),
""") = 0;
virtual generic_factory_function * copy() const = 0;
};
template <class T>
class factory_function : public generic_factory_function
{
public:
virtual ~factory_function(){}
virtual Interface * operator()
(""",
self.named_param_list(i, []),
""")
{return new T(""",
self.param_names(i, []),
""");}
virtual generic_factory_function * copy() const {return new factory_function<T>;}
};
std::auto_ptr<generic_factory_function> factory_func_ptr_;
Info info_;
public:
template <class Actual>
void set_type_special(Actual *){factory_func_ptr_.reset(new factory_function<Actual>());}
template <class Actual>
void set_type(){factory_func_ptr_ = new factory_function<Actual>();}
factory(Info info)
:factory_func_ptr_(0),
info_(info)
{}
factory(const factory & first)
:factory_func_ptr_(first.factory_func_ptr_->copy()),
info_(first.info_)
{}
Interface * operator()(""",
self.named_param_list(i, []),
""")
{return create(""",
self.param_names(i, []),
""");}
Interface * create(""",
self.named_param_list(i, []),
"""){return (*factory_func_ptr_)
(""",
self.param_names(i, []),
""");}
Info & get_info(){return info_;}
};
"""]))
# For loop over!
out.write("""}}
#endif
""")
def generate_counted_factory_hpp(self):
out = open('../../../boost/extension/counted_factory.hpp', mode='w')
out.write("""/* (C) Copyright Jeremy Pack 2007
* Distributed under 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)
*/
#ifndef BOOST_EXTENSION_COUNTED_FACTORY_HPP
#define BOOST_EXTENSION_COUNTED_FACTORY_HPP
#include <string>
namespace boost{namespace extensions{
""")
for i in range(self.max_params, -1, -1):
out.write(self.template_header('template <',
['class Interface', 'class Info'],
i, i == self.max_params))
if i != self.max_params:
factory_template = ("".join(["<",
self.nameless_param_list(i, ["Interface", "Info"]),
">\n"]))
else:
factory_template = "\n"
out.write("".join(["class counted_factory",
factory_template,
"""{
protected:
int * counter_;
std::string library_;
class generic_factory_function
{
public:
virtual ~generic_factory_function(){}
virtual Interface * operator()(""",
self.nameless_param_list(i, ["int * counter"]),
""") = 0;
virtual generic_factory_function * copy() const = 0;
};
template <class T>
class factory_function : public generic_factory_function
{
public:
class counted_object : public T
{
private:
int * counter_;
public:
counted_object(""",
self.named_param_list(i, ["int * counter"]),
""") : T(""",
self.param_names(i, []),"""),
counter_(counter)
{
++(*counter_);
}
~counted_object()
{
--(*counter_);
}
};
virtual ~factory_function(){}
virtual Interface * operator()
(""",
self.named_param_list(i, ["int * counter"]),
""")
{ // A compilation error here usually indicates that the
// class you are adding is not derived from the base class
// that you indicated.
return static_cast<Interface*>(new counted_object(""",
self.param_names(i, ["counter"]),
"""));}
virtual generic_factory_function * copy() const {return new factory_function<T>;}
};
std::auto_ptr<generic_factory_function> factory_func_ptr_;
Info info_;
public:
void set_library(const char * library_name)
{
library_ = library_name;
}
void set_counter(int * counter)
{
counter_ = counter;
}
const char * library()
{
return library_.c_str();
}
template <class Actual>
void set_type_special(Actual *){factory_func_ptr_.reset(new factory_function<Actual>());}
template <class Actual>
void set_type(){factory_func_ptr_ = new factory_function<Actual>();}
counted_factory(Info info)
:factory_func_ptr_(0),
info_(info)
{}
counted_factory(const counted_factory & first)
:counter_(first.counter_),
library_(first.library_),
factory_func_ptr_(first.factory_func_ptr_->copy()),
info_(first.info_)
{}
Interface * operator()(""",
self.named_param_list(i, ["int * counter"]),
""")
{return create(""",
self.param_names(i, ["counter"]),
""");}
Interface * create(""",
self.named_param_list(i, []),
"""){return (*factory_func_ptr_)
(""",
self.param_names(i, ["counter_"]),
""");}
Info & get_info(){return info_;}
};
"""]))
# For loop over!
out.write("""}}
#endif
""")
def generate_shared_library_hpp(self):
out = open('../../../boost/extension/shared_library.hpp', mode='w')
out.write("""/* (C) Copyright Jeremy Pack 2007
* Distributed under 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)
*/
#ifndef BOOST_EXTENSION_LINKED_LIBRARY_HPP
#define BOOST_EXTENSION_LINKED_LIBRARY_HPP
#include <boost/extension/impl/library_impl.hpp>
namespace boost{namespace extensions{
""")
for i in range(self.max_params, -1, -1):
out.write(self.template_header('template <',
['class ReturnValue'],
i, i == self.max_params))
if i != self.max_params:
functor_template = ("".join(["<",
self.nameless_param_list(i, ["ReturnValue"]),
">\n"]))
else:
functor_template = "\n"
out.write("".join(["class functor",
functor_template,
"""{
protected:
typedef ReturnValue (*FunctionType)(""",
self.nameless_param_list(i, []),
""");
FunctionType func_;
public:
bool is_valid(){return func_ != 0;}
functor(FunctionType func)
:func_(func)
{}
functor(generic_function_ptr func)
:func_(FunctionType(func))
{}
ReturnValue operator()(""",
self.named_param_list(i, []),
""")
{
return func_(""",
self.param_names(i, []),
""");
}
};
"""]))
# end for loop
out.write("""class shared_library
{
protected:
std::string location_;
library_handle handle_;
bool auto_close_;
public:
bool is_open(){return handle_ != 0;}
static bool is_linkable_library(const char * file_name){return is_library(file_name);}
bool open(){return (handle_ = load_shared_library(location_.c_str())) != 0;}
bool close(){return close_shared_library(handle_);}""")
for i in range(0, self.max_params + 1):
out.write(self.template_header(' template <',
['class ReturnValue'],
i, False))
functor_template = ("".join(["functor<",
self.nameless_param_list(i, ["ReturnValue"]),
">\n"]))
out.write("".join([" ",
functor_template,
" get_functor(",
"const char * function_name",
""")
{
return """,
functor_template,
""" (get_function(handle_, function_name));
}
"""]))
# end for loop
out.write("""shared_library(const char * location, bool auto_close = false)
:location_(location), handle_(0), auto_close_(auto_close){}
};
}}
#endif
""")
def generate_factory_map_hpp(self, factory_type, factory_type_add, new_members,
generic_factory_container_additions = "",
factory_container_contents = "", new_public_members = "",
factory_container_params = ""):
out = open(''.join(['../../../boost/extension/',factory_type,'_map.hpp']), mode='w')
out.write(''.join(["""/* (C) Copyright Jeremy Pack 2007
* Distributed under 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)
*/
#ifndef BOOST_EXTENSION_""",factory_type.upper(),"""_MAP_HPP
#define BOOST_EXTENSION_""",factory_type.upper(),"""_MAP_HPP
#include <list>
#include <memory>
#include <map>
#include <boost/extension/""",factory_type,""".hpp>
#include <boost/extension/extension.hpp>
#include <boost/extension/impl/typeinfo.hpp>
namespace boost{namespace extensions{
template <class TypeInfo>
class basic_""",factory_type,"""_map
{
protected:
class generic_factory_container
{
public:""", generic_factory_container_additions, """
virtual ~generic_factory_container(){}
};
template <class Interface, class Info, class Param1 = void, class Param2 = void, class Param3 = void, class Param4 = void, class Param5 = void, class Param6 = void>
class factory_container : public std::list<""",factory_type,"""<Interface, Info, Param1, Param2, Param3, Param4, Param5, Param6> >, public generic_factory_container
{
public:""", factory_container_contents, """
// factory_container() {}
// factory_container(basic_""", factory_type, """_map & z)
// :std::list<""",factory_type,"""<Interface, Info, Param1, Param2, Param3, Param4, Param5, Param6> >(z.get<Interface, Param1, Param2, Param3, Param4, Param5, Param6>()){}
//virtual ~factory_container(){}
};
typedef std::map<TypeInfo, generic_factory_container *> FactoryMap;
FactoryMap factories_;""", new_members,"""
public:""", new_public_members,"""
~basic_""", factory_type, """_map(){
for(typename FactoryMap::iterator it = factories_.begin(); it != factories_.end(); ++it)
delete it->second;
//TODO - test for memory leaks.
}
"""]))
for i in range(0, self.max_params + 1):
out.write("".join([self.template_header(' template <',
['class Interface', 'class Info'],
i, False),
"operator std::list<",factory_type,"<",
self.nameless_param_list(i, ["Interface", "Info"]),
"""> > & ()
{return this->get<""",
self.nameless_param_list(i, ["Interface", "Info"]),
""">();}
""",
self.template_header(' template <',
['class Interface', 'class Info'],
i, False),
"std::list<", factory_type, "<",
self.nameless_param_list(i, ["Interface", "Info"]),
"""> > & get()
{
TypeInfo current_type =
type_info_handler<TypeInfo, """, factory_type, """<""",
self.nameless_param_list(i, ["Interface", "Info"]),
"""> >::get_class_type();
typename FactoryMap::iterator it =
factories_.find(current_type);
if (it == factories_.end())
{
factory_container<""",
self.nameless_param_list(i, ["Interface", "Info"]),
"""> * ret =
new factory_container<""",
self.nameless_param_list(i, ["Interface", "Info"]),
""">(""",factory_container_params,""");
factories_[current_type] = ret;
return *ret;
}
else
{
// Change to dynamic if this fails
return static_cast<factory_container<""",
self.nameless_param_list(i, ["Interface", "Info"]),
"""> &>(*(it->second));
}
}
""",
self.template_header('template <',
['class Actual', 'class Interface', 'class Info'],
i, False),
"""void add(Info info)
{
typedef std::list<""",factory_type,"""<""",
self.nameless_param_list(i, ["Interface", "Info"]),
"""> > ListType;
ListType & s = this->get<""",
self.nameless_param_list(i, ["Interface", "Info"]),
""">();
""",factory_type,"""<""",
self.nameless_param_list(i, ["Interface", "Info"]),
"""> f(info);""",factory_type_add,"""
//f.set_type<Actual>();
f.set_type_special((Actual*)0);
s.push_back(f);
//it->set_type<Actual>();
}
"""]))
# end for loop
out.write(''.join(["""};
typedef basic_""",factory_type,"""_map<default_type_info> """,factory_type,"""_map;
}}
#endif
"""]))
def main(argv):
if len(argv) > 1:
max_params = int(argv[1])
else:
max_params = 6
gen = header_generator(max_params)
gen.generate()
if __name__=='__main__':
main(sys.argv)
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