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|
import sys # stderr
from utils import \
get_namespace, \
get_ext_name, \
_n_item, \
_ext, \
_reserved_keywords
from resource_classes import _resource_classes
_field_accessor_template_specialization = \
'''\
template<typename Connection>
template<>
%s
%s<Connection>::%s<%s>(void) const
{
return %s;
}\
'''
_templates = {}
_templates['field_accessor_template'] = \
'''\
template<typename ReturnType = %s, typename ... Parameter>
ReturnType
%s(Parameter && ... parameter) const
{
using make = xpp::generic::factory::make<Connection,
decltype((*this)->%s),
ReturnType,
Parameter ...>;
return make()(this->m_c,
(*this)->%s,
std::forward<Parameter>(parameter) ...);
}\
'''
def _field_accessor_template(c_type, method_name, member):
return _templates['field_accessor_template'] % \
( c_type
, method_name
, member
, member
)
_templates['event_dispatcher_class'] = \
'''\
namespace event {
template<typename Connection>
class dispatcher
{
public:
%s\
%s\
template<typename Handler>
bool
operator()(Handler%s,
const std::shared_ptr<xcb_generic_event_t> &%s) const
{\
%s
return false;
}
%s\
}; // class dispatcher
} // namespace event
'''
def _event_dispatcher_class(typedef, ctors, switch, members, has_events):
return _templates['event_dispatcher_class'] % \
( typedef
, ctors
, " handler" if has_events else ""
, " event" if has_events else ""
, switch if has_events else ""
, members
)
def event_dispatcher_class(namespace, cppevents):
ns = get_namespace(namespace)
ctor_name = "dispatcher"
typedef = []
ctors = []
members = []
opcode_switch = "event->response_type & ~0x80"
typedef = [ "typedef xpp::%s::extension extension;\n" % ns ]
members = \
[ "protected:"
, " Connection m_c;"
]
ctors = \
[ "template<typename C>"
, "%s(C && c)" % ctor_name
, " : m_c(std::forward<C>(c))"
, "{}"
]
# >>> if begin <<<
if namespace.is_ext:
# XXX: The xkb extension contains the sub-event in the member pad0
if ns == "xkb":
opcode_switch = "event->pad0"
else:
opcode_switch = "(event->response_type & ~0x80) - m_first_event"
members += [ " uint8_t m_first_event;" ]
ctors = \
[ "template<typename C>"
, "%s(C && c, uint8_t first_event)" % (ctor_name)
, " : m_c(std::forward<C>(c))"
, " , m_first_event(first_event)"
, "{}"
, ""
, "template<typename C>"
, "%s(C && c, const xpp::%s::extension & extension)" % (ctor_name, ns)
, " : %s(std::forward<C>(c), extension->first_event)" % ctor_name
, "{}"
]
# >>> if end <<<
if len(typedef) > 0:
typedef = "\n".join([" " + s for s in typedef]) + "\n"
else:
typedef = ""
if len(ctors) > 0:
ctors = "\n".join([(" " if len(s) > 0 else "") + s for s in ctors]) + "\n"
else:
ctors = ""
if len(members) > 0:
members = "\n".join([" " + s for s in members]) + "\n"
else:
members = ""
switch = event_switch_cases(cppevents, opcode_switch, "handler", "event", namespace)
return _event_dispatcher_class(typedef,
ctors,
switch,
members,
len(cppevents) > 0)
def event_switch_cases(cppevents, arg_switch, arg_handler, arg_event, ns):
cases = ""
first_event_arg = ", m_first_event" if ns.is_ext else ""
templ = [ " case %s:"
, " %s(" % arg_handler + "%s<Connection>" + "(m_c%s, %s));" % (first_event_arg, arg_event)
, " return true;"
, ""
, ""
]
distinct_events = [[]]
for e in cppevents:
done = False
for l in distinct_events:
if e in l:
continue
else:
l.append(e)
done = True
break
if not done:
distinct_events.append([e])
else:
continue
for l in distinct_events:
cases += "\n switch (%s) {\n\n" % arg_switch
for e in l:
cases += "\n".join(templ) % (e.opcode_name, e.scoped_name())
cases += " };\n"
return cases if len(cppevents) > 0 else ""
########## EVENT ##########
class CppEvent(object):
def __init__(self, opcode, opcode_name, c_name, namespace, name, fields):
self.opcode = opcode
self.opcode_name = opcode_name
self.c_name = c_name
self.namespace = namespace
self.fields = fields
self.names = list(map(str.lower, _n_item(name[-1], True)))
self.name = "_".join(self.names)
self.nssopen = ""
self.nssclose = ""
self.scope = []
for name in self.names[0:-1]:
if name in _reserved_keywords: name += "_"
self.nssopen += " namespace %s {" % name
self.nssclose += " };"
self.scope.append(name)
def __cmp__(self, other):
if self.opcode == other.opcode:
return 0
elif self.opcode < other.opcode:
return -1
else:
return 1
def get_name(self):
return _reserved_keywords.get(self.name, self.name)
def scoped_name(self):
ns = get_namespace(self.namespace)
return "xpp::" + ns + "::event::" + self.get_name()
def make_class(self):
member_accessors = []
member_accessors_special = []
for field in self.fields:
if field.field_type[-1] in _resource_classes:
template_name = field.field_name.capitalize()
c_type = field.c_field_type
method_name = field.field_name.lower()
if (method_name == self.get_name()
or method_name in _reserved_keywords):
method_name += "_"
member = field.c_field_name
member_accessors.append(_field_accessor_template(c_type, method_name, member))
ns = get_namespace(self.namespace)
extension = "xpp::%s::extension" % ns
ctor = \
[ "template<typename C>"
, "%s(C && c," % self.get_name()
, (" " * len(self.get_name())) + " const std::shared_ptr<xcb_generic_event_t> & event)"
, " : base(event)"
, " , m_c(std::forward<C>(c))"
, "{}"
]
m_first_event = ""
typedef = [ "typedef xpp::%s::extension extension;" % ns ]
description = \
[ "static std::string description(void)"
, "{"
, " return std::string(\"%s\");" % self.opcode_name
, "}"
]
opcode_accessor = \
[ "static uint8_t opcode(void)"
, "{"
, " return %s;" % self.opcode_name
, "}"
]
first_event = []
if self.namespace.is_ext:
opcode_accessor += \
[ ""
, "static uint8_t opcode(uint8_t first_event)"
, "{"
, " return first_event + opcode();"
, "}"
, ""
, "static uint8_t opcode(const xpp::%s::extension & extension)" % ns
, "{"
, " return opcode(extension->first_event);"
, "}"
]
first_event = \
[ "uint8_t first_event(void)"
, "{"
, " return m_first_event;"
, "}"
]
ctor = \
[ "template<typename C>"
, "%s(C && c," % self.get_name()
, (" " * len(self.get_name())) + " uint8_t first_event,"
, (" " * len(self.get_name())) + " const std::shared_ptr<xcb_generic_event_t> & event)"
, " : base(event)"
, " , m_c(std::forward<C>(c))"
, " , m_first_event(first_event)"
, "{}"
]
m_first_event = " const uint8_t m_first_event;\n"
if len(opcode_accessor) > 0:
opcode_accessor = "\n".join([" " + s for s in opcode_accessor]) + "\n"
else:
opcode_accessor = ""
if len(ctor) > 0:
ctor = "\n".join([" " + s for s in ctor]) + "\n"
else:
ctor = ""
if len(typedef) > 0:
typedef = "\n".join([" " + s for s in typedef]) + "\n\n"
else:
typedef = ""
if len(member_accessors) > 0:
member_accessors = "\n" + "\n\n".join(member_accessors) + "\n\n"
member_accessors_special = "\n" + "\n\n".join(member_accessors_special) + "\n\n"
else:
member_accessors = ""
member_accessors_special = ""
if len(description) > 0:
description = "\n" + "\n".join([" " + s for s in description]) + "\n"
else:
description = ""
if len(first_event) > 0:
first_event = "\n" + "\n".join([" " + s for s in first_event]) + "\n"
else:
first_event = ""
return \
'''
namespace event {
template<typename Connection>
class %s
: public xpp::generic::event<%s>
{
public:
%s\
typedef xpp::generic::event<%s> base;
%s\
virtual ~%s(void) {}
%s\
%s\
%s\
%s\
protected:
Connection m_c;
%s\
}; // class %s
%s\
} // namespace event
''' % (self.get_name(), # class %s
self.c_name, # %s>
typedef,
self.c_name, # typedef xpp::generic::event<%s>::base;
ctor,
self.get_name(), # virtual ~%s(void) {}
opcode_accessor,
description,
first_event,
member_accessors,
m_first_event,
self.get_name(), # // class %s
member_accessors_special)
|
