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from utils import \
get_namespace, \
get_ext_name, \
_n_item, \
_ext, \
_reserved_keywords
_templates = {}
_templates['error_dispatcher_class'] = \
'''\
namespace error {
class dispatcher
{
public:
%s\
%s\
void
operator()(const std::shared_ptr<xcb_generic_error_t> &%s) const
{
%s\
}
%s\
}; // class dispatcher
} // namespace error
'''
def _error_dispatcher_class(typedef, ctors, switch, members, has_errors):
return _templates['error_dispatcher_class'] % \
( typedef
, ctors
, " error" if has_errors else ""
, switch if has_errors else ""
, members
)
def error_dispatcher_class(namespace, cpperrors):
ns = get_namespace(namespace)
ctor_name = "dispatcher"
typedef = []
ctors = []
members = []
opcode_switch = "error->error_code"
typedef = [ "typedef xpp::%s::extension extension;\n" % ns ]
# >>> if begin <<<
if namespace.is_ext:
opcode_switch = "error->error_code - m_first_error"
members += \
[ "protected:"
, " uint8_t m_first_error;"
]
ctors = \
[ "%s(uint8_t first_error)" % (ctor_name)
, " : m_first_error(first_error)"
, "{}"
, ""
, "%s(const xpp::%s::extension & extension)" % (ctor_name, ns)
, " : %s(extension->first_error)" % 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 = error_switch_cases(cpperrors, opcode_switch, "error")
return _error_dispatcher_class(typedef,
ctors,
switch,
members,
len(cpperrors) > 0)
def error_switch_cases(cpperrors, arg_switch, arg_error):
cases = ""
errors = cpperrors
templ = [ " case %s: // %s"
, " throw %s" + "(%s);" % arg_error
, ""
, ""
]
cases += " switch (%s) {\n\n" % arg_switch
for e in errors:
cases += "\n".join(templ) % (e.opcode_name, e.opcode, e.scoped_name())
cases += " };\n"
return cases
class CppError(object):
def __init__(self, error, namespace, name, c_name, opcode, opcode_name):
self.error = error
self.namespace = namespace
self.c_name = c_name
self.opcode = opcode
self.opcode_name = opcode_name
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 get_name(self):
return _reserved_keywords.get(self.name, self.name)
def scoped_name(self):
ns = get_namespace(self.namespace)
return "xpp::" + ns + "::error::" + self.get_name()
def make_class(self):
ns = get_namespace(self.namespace)
typedef = []
members = []
opcode_accessor = \
[ "static uint8_t opcode(void)"
, "{"
, " return %s;" % self.opcode_name
, "}"
]
if self.namespace.is_ext:
opcode_accessor += \
[ ""
, "static uint8_t opcode(uint8_t first_error)"
, "{"
, " return first_error + opcode();"
, "}"
, ""
, "static uint8_t opcode(const xpp::%s::extension & extension)" % ns
, "{"
, " return opcode(extension->first_error);"
, "}"
]
members = \
[ "protected:"
, " uint8_t m_first_error;"
]
if len(opcode_accessor) > 0:
opcode_accessor = "\n".join([" " + s for s in opcode_accessor]) + "\n"
else:
opcode_accessor = ""
if len(members) > 0:
members = "\n" + "\n".join([" " + s for s in members]) + "\n"
else:
members = ""
if len(typedef) > 0:
typedef = "\n".join([" " + s for s in typedef]) + "\n\n"
else:
typedef = ""
name = self.name
if self.name in _reserved_keywords: name = self.name + "_"
return \
'''
namespace error {
class %s
: public xpp::generic::error<%s,
%s>
{
public:
%s\
using xpp::generic::error<%s, %s>::error;
virtual ~%s(void) {}
%s
static std::string description(void)
{
return std::string("%s");
}
%s\
}; // class %s
} // namespace error
''' % (self.get_name(), # class %s
self.get_name(), # : public xpp::generic::error<%s,
self.c_name, # %s>
typedef,
self.get_name(), self.c_name, # using xpp::generic::error<%s, %s>::error;
self.get_name(), # virtual ~%s(void) {}
opcode_accessor,
self.opcode_name, # static constexpr const char * opcode_literal
members,
self.get_name()) # // class %s
|
