import sys, os, string
import getopt, traceback, keyword
import defsparser, argtypes, override
def exc_info():
#traceback.print_exc()
etype, value, tb = sys.exc_info()
ret = ""
try:
sval = str(value)
if etype == KeyError:
ret = "No ArgType for %s" % (sval,)
else:
ret = sval
finally:
del etype, value, tb
return ret
def fixname(name):
if keyword.iskeyword(name):
return name + '_'
return name
class FileOutput:
'''Simple wrapper for file object, that makes writing #line
statements easier.''' # "
def __init__(self, fp, filename=None):
self.fp = fp
self.lineno = 1
if filename:
self.filename = filename
else:
self.filename = self.fp.name
# handle writing to the file, and keep track of the line number ...
def write(self, str):
self.fp.write(str)
self.lineno = self.lineno + string.count(str, '\n')
def writelines(self, sequence):
for line in sequence:
self.write(line)
def close(self):
self.fp.close()
def flush(self):
self.fp.flush()
def setline(self, linenum, filename):
'''writes out a #line statement, for use by the C
preprocessor.''' # "
self.write('#line %d "%s"\n' % (linenum, filename))
def resetline(self):
'''resets line numbering to the original file'''
self.setline(self.lineno + 1, self.filename)
class Wrapper:
type_tmpl = \
'PyTypeObject Py%(typename)s_Type = {\n' \
' PyObject_HEAD_INIT(NULL)\n' \
' 0, /* ob_size */\n' \
' "%(classname)s", /* tp_name */\n' \
' sizeof(%(tp_basicsize)s), /* tp_basicsize */\n' \
' 0, /* tp_itemsize */\n' \
' /* methods */\n' \
' (destructor)0, /* tp_dealloc */\n' \
' (printfunc)0, /* tp_print */\n' \
' (getattrfunc)%(tp_getattr)s, /* tp_getattr */\n' \
' (setattrfunc)%(tp_setattr)s, /* tp_setattr */\n' \
' (cmpfunc)%(tp_compare)s, /* tp_compare */\n' \
' (reprfunc)%(tp_repr)s, /* tp_repr */\n' \
' (PyNumberMethods*)%(tp_as_number)s, /* tp_as_number */\n' \
' (PySequenceMethods*)%(tp_as_sequence)s, /* tp_as_sequence */\n' \
' (PyMappingMethods*)%(tp_as_mapping)s, /* tp_as_mapping */\n' \
' (hashfunc)%(tp_hash)s, /* tp_hash */\n' \
' (ternaryfunc)%(tp_call)s, /* tp_call */\n' \
' (reprfunc)%(tp_str)s, /* tp_str */\n' \
' (getattrofunc)0, /* tp_getattro */\n' \
' (setattrofunc)0, /* tp_setattro */\n' \
' (PyBufferProcs*)%(tp_as_buffer)s, /* tp_as_buffer */\n' \
' Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */\n' \
' NULL, /* Documentation string */\n' \
' (traverseproc)0, /* tp_traverse */\n' \
' (inquiry)0, /* tp_clear */\n' \
' (richcmpfunc)%(tp_richcompare)s, /* tp_richcompare */\n' \
' %(tp_weaklistoffset)s, /* tp_weaklistoffset */\n' \
' (getiterfunc)%(tp_iter)s, /* tp_iter */\n' \
' (iternextfunc)%(tp_iternext)s, /* tp_iternext */\n' \
' %(tp_methods)s, /* tp_methods */\n' \
' 0, /* tp_members */\n' \
' %(tp_getset)s, /* tp_getset */\n' \
' NULL, /* tp_base */\n' \
' NULL, /* tp_dict */\n' \
' (descrgetfunc)%(tp_descr_get)s, /* tp_descr_get */\n' \
' (descrsetfunc)%(tp_descr_set)s, /* tp_descr_set */\n' \
' %(tp_dictoffset)s, /* tp_dictoffset */\n' \
' (initproc)%(tp_init)s, /* tp_init */\n' \
' (allocfunc)%(tp_alloc)s, /* tp_alloc */\n' \
' (newfunc)%(tp_new)s, /* tp_new */\n' \
' (freefunc)%(tp_free)s, /* tp_free */\n' \
' (inquiry)%(tp_is_gc)s /* tp_is_gc */\n' \
'};\n\n'
slots_list = ['tp_getattr', 'tp_setattr', 'tp_compare', 'tp_repr',
'tp_as_number', 'tp_as_sequence', 'tp_as_mapping', 'tp_hash',
'tp_call', 'tp_str', 'tp_as_buffer', 'tp_richcompare', 'tp_iter',
'tp_iternext', 'tp_descr_get', 'tp_descr_set', 'tp_init',
'tp_alloc', 'tp_new', 'tp_free', 'tp_is_gc']
getter_tmpl = \
'static PyObject *\n' \
'%(funcname)s(PyObject *self, void *closure)\n' \
'{\n' \
'%(varlist)s' \
' ret = %(field)s;\n' \
'%(codeafter)s\n' \
'}\n\n'
parse_tmpl = \
' if (!PyArg_ParseTupleAndKeywords(args, kwargs, "%(typecodes)s:%(name)s"%(parselist)s))\n' \
' return %(errorreturn)s;\n'
deprecated_tmpl = \
' if (PyErr_Warn(PyExc_DeprecationWarning, "%(deprecationmsg)s") < 0)\n' \
' return %(errorreturn)s;\n'
methdef_tmpl = ' { "%(name)s", (PyCFunction)%(cname)s, %(flags)s },\n'
noconstructor = \
'static int\n' \
'pygobject_no_constructor(PyObject *self, PyObject *args, PyObject *kwargs)\n' \
'{\n' \
' gchar buf[512];\n' \
'\n' \
' g_snprintf(buf, sizeof(buf), "%s is an abstract widget", self->ob_type->tp_name);\n' \
' PyErr_SetString(PyExc_NotImplementedError, buf);\n' \
' return -1;\n' \
'}\n\n'
function_tmpl = \
'static PyObject *\n' \
'_wrap_%(cname)s(PyObject *self%(extraparams)s)\n' \
'{\n' \
'%(varlist)s' \
'%(parseargs)s' \
'%(codebefore)s' \
' %(setreturn)s%(cname)s(%(arglist)s);\n' \
'%(codeafter)s\n' \
'}\n\n'
# template for method calls
constructor_tmpl = None
method_tmpl = None
def __init__(self, parser, objinfo, overrides, fp=FileOutput(sys.stdout)):
self.parser = parser
self.objinfo = objinfo
self.overrides = overrides
self.fp = fp
def get_lower_name(self):
return string.lower(string.replace(self.objinfo.typecode,
'_TYPE_', '_', 1))
def get_field_accessor(self, fieldname):
raise NotImplementedError
def get_initial_class_substdict(self): return {}
def get_initial_constructor_substdict(self, constructor):
return { 'name': '%s.__init__' % self.objinfo.c_name,
'errorreturn': '-1' }
def get_initial_method_substdict(self, method):
return { 'name': '%s.%s' % (self.objinfo.c_name, method.name) }
def write_class(self):
self.fp.write('\n/* ----------- ' + self.objinfo.c_name + ' ----------- */\n\n')
substdict = self.get_initial_class_substdict()
substdict['typename'] = self.objinfo.c_name
if self.overrides.modulename:
substdict['classname'] = '%s.%s' % (self.overrides.modulename,
self.objinfo.name)
else:
substdict['classname'] = self.objinfo.name
# Maybe this could be done in a nicer way, but I'll leave it as it is
# for now: -- Johan
if not self.overrides.slot_is_overriden('%s.tp_init' % self.objinfo.c_name):
substdict['tp_init'] = self.write_constructor()
substdict['tp_methods'] = self.write_methods()
substdict['tp_getset'] = self.write_getsets()
# handle slots ...
for slot in self.slots_list:
if substdict.has_key(slot) and substdict[slot] != '0':
continue
slotname = '%s.%s' % (self.objinfo.c_name, slot)
slotfunc = '_wrap_%s_%s' % (self.get_lower_name(), slot)
if slot[:6] == 'tp_as_':
slotfunc = '&' + slotfunc
if self.overrides.slot_is_overriden(slotname):
data = self.overrides.slot_override(slotname)
self.write_function(slotname, data)
substdict[slot] = slotfunc
else:
substdict[slot] = '0'
self.fp.write(self.type_tmpl % substdict)
def write_function_wrapper(self, function_obj, template,
handle_return=0, is_method=0, kwargs_needed=0,
substdict=None):
'''This function is the guts of all functions that generate
wrappers for functions, methods and constructors.'''
if not substdict: substdict = {}
info = argtypes.WrapperInfo()
substdict.setdefault('errorreturn', 'NULL')
# for methods, we want the leading comma
if is_method:
info.arglist.append('')
if function_obj.varargs:
raise ValueError, "varargs functions not supported"
for ptype, pname, pdflt, pnull in function_obj.params:
if pdflt and '|' not in info.parsestr:
info.add_parselist('|', [], [])
handler = argtypes.matcher.get(ptype)
handler.write_param(ptype, pname, pdflt, pnull, info)
substdict['setreturn'] = ''
if handle_return:
if function_obj.ret not in ('none', None):
substdict['setreturn'] = 'ret = '
handler = argtypes.matcher.get(function_obj.ret)
handler.write_return(function_obj.ret,
function_obj.caller_owns_return, info)
if function_obj.deprecated != None:
deprecated = self.deprecated_tmpl % {
'deprecationmsg': function_obj.deprecated,
'errorreturn': substdict['errorreturn'] }
else:
deprecated = ''
# if name isn't set, set it to function_obj.name
substdict.setdefault('name', function_obj.name)
if self.objinfo:
substdict['typename'] = self.objinfo.c_name
substdict['cname'] = function_obj.c_name
substdict['varlist'] = info.get_varlist()
substdict['typecodes'] = info.parsestr
substdict['parselist'] = info.get_parselist()
substdict['arglist'] = info.get_arglist()
substdict['codebefore'] = deprecated + \
string.replace(info.get_codebefore(),
'return NULL', 'return ' + substdict['errorreturn'])
substdict['codeafter'] = string.replace(info.get_codeafter(),
'return NULL', 'return ' + substdict['errorreturn'])
if info.parsestr or kwargs_needed:
substdict['parseargs'] = self.parse_tmpl % substdict
substdict['extraparams'] = ', PyObject *args, PyObject *kwargs'
flags = 'METH_VARARGS|METH_KEYWORDS'
# prepend the keyword list to the variable list
substdict['varlist'] = info.get_kwlist() + substdict['varlist']
else:
substdict['parseargs'] = ''
substdict['extraparams'] = ''
flags = 'METH_NOARGS'
return template % substdict, flags
def write_constructor(self):
initfunc = '0'
constructor = self.parser.find_constructor(self.objinfo,self.overrides)
if constructor:
funcname = constructor.c_name
try:
if self.overrides.is_overriden(funcname):
data = self.overrides.override(funcname)
self.write_function(funcname, data)
else:
# write constructor from template ...
code = self.write_function_wrapper(constructor,
self.constructor_tmpl,
handle_return=0, is_method=0, kwargs_needed=1,
substdict=self.get_initial_constructor_substdict(constructor))[0]
self.fp.write(code)
initfunc = '_wrap_' + funcname
except:
sys.stderr.write('Could not write constructor for %s: %s\n'
% (self.objinfo.c_name, exc_info()))
# this is a hack ...
if not hasattr(self.overrides, 'no_constructor_written'):
self.fp.write(self.noconstructor)
self.overrides.no_constructor_written = 1
initfunc = 'pygobject_no_constructor'
else:
# this is a hack ...
if not hasattr(self.overrides, 'no_constructor_written'):
self.fp.write(self.noconstructor)
self.overrides.no_constructor_written = 1
initfunc = 'pygobject_no_constructor'
return initfunc
def get_methflags(self, funcname):
if self.overrides.wants_kwargs(funcname):
return 'METH_VARARGS|METH_KEYWORDS'
elif self.overrides.wants_noargs(funcname):
return 'METH_NOARGS'
else:
return 'METH_VARARGS'
def write_function(self, funcname, data):
lineno, filename = self.overrides.getstartline(funcname)
self.fp.setline(lineno, filename)
self.fp.write(data)
self.fp.resetline()
self.fp.write('\n\n')
def write_methods(self):
methods = []
klass = self.objinfo.c_name
# First, get methods from the defs files
for meth in self.parser.find_methods(self.objinfo):
method_name = meth.c_name
if self.overrides.is_ignored(method_name):
continue
try:
if self.overrides.is_overriden(method_name):
if not self.overrides.is_already_included(method_name):
data = self.overrides.override(method_name)
self.write_function(method_name, data)
methflags = self.get_methflags(method_name)
else:
# write constructor from template ...
code, methflags = self.write_function_wrapper(meth,
self.method_tmpl, handle_return=1, is_method=1,
substdict=self.get_initial_method_substdict(meth))
self.fp.write(code)
methods.append(self.methdef_tmpl %
{ 'name': fixname(meth.name),
'cname': '_wrap_' + method_name,
'flags': methflags})
except:
sys.stderr.write('Could not write method %s.%s: %s\n'
% (klass, meth.name, exc_info()))
# Now try to see if there are any defined in the override
for method_name in self.overrides.get_defines_for(klass):
c_name = override.class2cname(klass, method_name)
if self.overrides.is_already_included(method_name):
continue
try:
data = self.overrides.define(klass, method_name)
self.write_function(method_name, data)
self.get_methflags(method_name)
methods.append(self.methdef_tmpl %
{ 'name': method_name,
'cname': '_wrap_' + c_name,
'flags': methflags})
except:
sys.stderr.write('Could not write method %s.%s: %s\n'
% (klass, meth.name, exc_info()))
if methods:
methoddefs = '_Py%s_methods' % self.objinfo.c_name
# write the PyMethodDef structure
methods.append(' { NULL, NULL, 0 }\n')
self.fp.write('static PyMethodDef %s[] = {\n' % methoddefs)
self.fp.write(string.join(methods, ''))
self.fp.write('};\n\n')
else:
methoddefs = 'NULL'
return methoddefs
def write_getsets(self):
lower_name = self.get_lower_name()
getsets_name = lower_name + '_getsets'
getterprefix = '_wrap_' + lower_name + '__get_'
setterprefix = '_wrap_' + lower_name + '__set_'
# no overrides for the whole function. If no fields, don't write a func
if not self.objinfo.fields:
return '0'
getsets = []
for ftype, fname in self.objinfo.fields:
gettername = '0'
settername = '0'
attrname = self.objinfo.c_name + '.' + fname
if self.overrides.attr_is_overriden(attrname):
code = self.overrides.attr_override(attrname)
self.write_function(attrname, code)
if string.find(code, getterprefix + fname) >= 0:
gettername = getterprefix + fname
if string.find(code, setterprefix + fname) >= 0:
settername = setterprefix + fname
if gettername == '0':
try:
funcname = getterprefix + fname
info = argtypes.WrapperInfo()
handler = argtypes.matcher.get(ftype)
# for attributes, we don't own the "return value"
handler.write_return(ftype, 0, info)
self.fp.write(self.getter_tmpl %
{ 'funcname': funcname,
'varlist': info.varlist,
'field': self.get_field_accessor(fname),
'codeafter': info.get_codeafter() })
gettername = funcname
except:
sys.stderr.write("Could not write getter for %s.%s: %s\n"
% (self.objinfo.c_name, fname, exc_info()))
if gettername != '0' or settername != '0':
getsets.append(' { "%s", (getter)%s, (setter)%s },\n' %
(fixname(fname), gettername, settername))
if not getsets:
return '0'
self.fp.write('static PyGetSetDef %s[] = {\n' % getsets_name)
for getset in getsets:
self.fp.write(getset)
self.fp.write(' { NULL, (getter)0, (setter)0 },\n')
self.fp.write('};\n\n')
return getsets_name
def write_functions(self, prefix):
self.fp.write('\n/* ----------- functions ----------- */\n\n')
functions = []
# First, get methods from the defs files
for func in self.parser.find_functions():
funcname = func.c_name
if self.overrides.is_ignored(funcname):
continue
try:
if self.overrides.is_overriden(funcname):
data = self.overrides.override(funcname)
self.write_function(funcname, data)
methflags = self.get_methflags(funcname)
else:
# write constructor from template ...
code, methflags = self.write_function_wrapper(func,
self.function_tmpl, handle_return=1, is_method=0)
self.fp.write(code)
functions.append(self.methdef_tmpl %
{ 'name': func.name,
'cname': '_wrap_' + funcname,
'flags': methflags })
except:
sys.stderr.write('Could not write function %s: %s\n'
% (func.name, exc_info()))
# Now try to see if there are any defined in the override
for funcname in self.overrides.get_functions():
try:
data = self.overrides.function(funcname)
self.write_function(funcname)
methflags = self.get_methflags(funcname)
functions.append(self.methdef_tmpl %
{ 'name': funcname,
'cname': '_wrap_' + funcname,
'flags': methflags })
except:
sys.stderr.write('Could not write function %s: %s\n'
% (funcname, exc_info()))
# write the PyMethodDef structure
functions.append(' { NULL, NULL, 0 }\n')
self.fp.write('PyMethodDef ' + prefix + '_functions[] = {\n')
self.fp.write(string.join(functions, ''))
self.fp.write('};\n\n')
class GObjectWrapper(Wrapper):
constructor_tmpl = \
'static int\n' \
'_wrap_%(cname)s(PyGObject *self%(extraparams)s)\n' \
'{\n' \
'%(varlist)s' \
'%(parseargs)s' \
'%(codebefore)s' \
' self->obj = (GObject *)%(cname)s(%(arglist)s);\n' \
'%(codeafter)s\n' \
' if (!self->obj) {\n' \
' PyErr_SetString(PyExc_RuntimeError, "could not create %(typename)s object");\n' \
' return -1;\n' \
' }\n' \
'%(aftercreate)s' \
' pygobject_register_wrapper((PyObject *)self);\n' \
' return 0;\n' \
'}\n\n'
method_tmpl = \
'static PyObject *\n' \
'_wrap_%(cname)s(PyGObject *self%(extraparams)s)\n' \
'{\n' \
'%(varlist)s' \
'%(parseargs)s' \
'%(codebefore)s' \
' %(setreturn)s%(cname)s(%(cast)s(self->obj)%(arglist)s);\n' \
'%(codeafter)s\n' \
'}\n\n'
def __init__(self, parser, objinfo, overrides, fp=FileOutput(sys.stdout)):
Wrapper.__init__(self, parser, objinfo, overrides, fp)
if self.objinfo:
self.castmacro = string.replace(self.objinfo.typecode,
'_TYPE_', '_', 1)
def get_initial_class_substdict(self):
return { 'tp_basicsize' : 'PyGObject',
'tp_weaklistoffset' : 'offsetof(PyGObject, weakreflist)',
'tp_dictoffset' : 'offsetof(PyGObject, inst_dict)' }
def get_field_accessor(self, fieldname):
castmacro = string.replace(self.objinfo.typecode, '_TYPE_', '_', 1)
return '%s(pygobject_get(self))->%s' % (castmacro, fieldname)
def get_initial_constructor_substdict(self, constructor):
substdict = Wrapper.get_initial_constructor_substdict(self, constructor)
if argtypes.matcher.object_is_a(self.objinfo.c_name, 'GtkWindow'):
substdict['aftercreate'] = " g_object_ref(self->obj); /* we don't own the first reference of windows */\n"
elif argtypes.matcher.object_is_a(self.objinfo.c_name, 'GtkInvisible'):
substdict['aftercreate'] = " g_object_ref(self->obj); /* we don't own the first reference of invisibles */\n"
else:
if not constructor.caller_owns_return:
substdict['aftercreate'] = " g_object_ref(self->obj);\n"
else:
substdict['aftercreate'] = ''
return substdict
def get_initial_method_substdict(self, method):
substdict = Wrapper.get_initial_method_substdict(self, method)
substdict['cast'] = string.replace(self.objinfo.typecode, '_TYPE_', '_', 1)
return substdict
## TODO : Add GstMiniObjectWrapper(Wrapper)
class GstMiniObjectWrapper(Wrapper):
constructor_tmpl = \
'static int\n' \
'_wrap_%(cname)s(PyGstMiniObject *self%(extraparams)s)\n' \
'{\n' \
'%(varlist)s' \
'%(parseargs)s' \
'%(codebefore)s' \
' self->obj = (GstMiniObject *)%(cname)s(%(arglist)s);\n' \
'%(codeafter)s\n' \
' if (!self->obj) {\n' \
' PyErr_SetString(PyExc_RuntimeError, "could not create %(typename)s miniobject");\n' \
' return -1;\n' \
' }\n' \
'%(aftercreate)s' \
' return 0;\n' \
'}\n\n'
method_tmpl = \
'static PyObject *\n' \
'_wrap_%(cname)s(PyGstMiniObject *self%(extraparams)s)\n' \
'{\n' \
'%(varlist)s' \
'%(parseargs)s' \
'%(codebefore)s' \
' %(setreturn)s%(cname)s(%(cast)s(self->obj)%(arglist)s);\n' \
'%(codeafter)s\n' \
'}\n\n'
def __init__(self, parser, objinfo, overrides, fp=FileOutput(sys.stdout)):
Wrapper.__init__(self, parser, objinfo, overrides, fp)
if self.objinfo:
self.castmacro = string.replace(self.objinfo.typecode,
'_TYPE_', '_', 1)
def get_initial_class_substdict(self):
return { 'tp_basicsize' : 'PyGstMiniObject',
'tp_weaklistoffset' : 'offsetof(PyGstMiniObject, weakreflist)',
'tp_dictoffset' : 'offsetof(PyGstMiniObject, inst_dict)' }
def get_field_accessor(self, fieldname):
castmacro = string.replace(self.objinfo.typecode, '_TYPE_', '_', 1)
return '%s(pygstminiobject_get(self))->%s' % (castmacro, fieldname)
def get_initial_constructor_substdict(self, constructor):
substdict = Wrapper.get_initial_constructor_substdict(self, constructor)
if not constructor.caller_owns_return:
substdict['aftercreate'] = " g_object_ref(self->obj);\n"
else:
substdict['aftercreate'] = ''
return substdict
def get_initial_method_substdict(self, method):
substdict = Wrapper.get_initial_method_substdict(self, method)
substdict['cast'] = string.replace(self.objinfo.typecode, '_TYPE_', '_', 1)
return substdict
class GInterfaceWrapper(GObjectWrapper):
def get_initial_class_substdict(self):
return { 'tp_basicsize' : 'PyObject',
'tp_weaklistoffset' : '0',
'tp_dictoffset' : '0'}
def write_constructor(self):
# interfaces have no constructors ...
return '0'
def write_getsets(self):
# interfaces have no fields ...
return '0'
class GBoxedWrapper(Wrapper):
constructor_tmpl = \
'static int\n' \
'_wrap_%(cname)s(PyGBoxed *self%(extraparams)s)\n' \
'{\n' \
'%(varlist)s' \
'%(parseargs)s' \
'%(codebefore)s' \
' self->gtype = %(typecode)s;\n' \
' self->free_on_dealloc = FALSE;\n' \
' self->boxed = %(cname)s(%(arglist)s);\n' \
'%(codeafter)s\n' \
' if (!self->boxed) {\n' \
' PyErr_SetString(PyExc_RuntimeError, "could not create %(typename)s object");\n' \
' return -1;\n' \
' }\n' \
' self->free_on_dealloc = TRUE;\n' \
' return 0;\n' \
'}\n\n'
method_tmpl = \
'static PyObject *\n' \
'_wrap_%(cname)s(PyObject *self%(extraparams)s)\n' \
'{\n' \
'%(varlist)s' \
'%(parseargs)s' \
'%(codebefore)s' \
' %(setreturn)s%(cname)s(pyg_boxed_get(self, %(typename)s)%(arglist)s);\n' \
'%(codeafter)s\n' \
'}\n\n'
def get_initial_class_substdict(self):
return { 'tp_basicsize' : 'PyGBoxed',
'tp_weaklistoffset' : '0',
'tp_dictoffset' : '0' }
def get_field_accessor(self, fieldname):
return 'pyg_boxed_get(self, %s)->%s' % (self.objinfo.c_name, fieldname)
def get_initial_constructor_substdict(self, constructor):
substdict = Wrapper.get_initial_constructor_substdict(self, constructor)
substdict['typecode'] = self.objinfo.typecode
return substdict
class GPointerWrapper(GBoxedWrapper):
constructor_tmpl = \
'static int\n' \
'_wrap_%(cname)s(PyGPointer *self%(extraparams)s)\n' \
'{\n' \
'%(varlist)s' \
'%(parseargs)s' \
'%(codebefore)s' \
' self->gtype = %(typecode)s;\n' \
' self->pointer = %(cname)s(%(arglist)s);\n' \
'%(codeafter)s\n' \
' if (!self->pointer) {\n' \
' PyErr_SetString(PyExc_RuntimeError, "could not create %(typename)s object");\n' \
' return -1;\n' \
' }\n' \
' return 0;\n' \
'}\n\n'
method_tmpl = \
'static PyObject *\n' \
'_wrap_%(cname)s(PyObject *self%(extraparams)s)\n' \
'{\n' \
'%(varlist)s' \
'%(parseargs)s' \
'%(codebefore)s' \
' %(setreturn)s%(cname)s(pyg_pointer_get(self, %(typename)s)%(arglist)s);\n' \
'%(codeafter)s\n' \
'}\n\n'
def get_initial_class_substdict(self):
return { 'tp_basicsize' : 'PyGPointer',
'tp_weaklistoffset' : '0',
'tp_dictoffset' : '0' }
def get_field_accessor(self, fieldname):
return 'pyg_pointer_get(self, %s)->%s' % (self.objinfo.c_name, fieldname)
def get_initial_constructor_substdict(self, constructor):
substdict = Wrapper.get_initial_constructor_substdict(self, constructor)
substdict['typecode'] = self.objinfo.typecode
return substdict
def write_headers(data, fp):
fp.write('/* -- THIS FILE IS GENERATE - DO NOT EDIT */')
fp.write('/* -*- Mode: C; c-basic-offset: 4 -*- */\n\n')
fp.write('#include <Python.h>\n\n\n')
fp.write(data)
fp.resetline()
fp.write('\n\n')
def write_imports(overrides, fp):
fp.write('/* ---------- types from other modules ---------- */\n')
for module, pyname, cname in overrides.get_imports():
fp.write('static PyTypeObject *_%s;\n' % cname)
fp.write('#define %s (*_%s)\n' % (cname, cname))
fp.write('\n\n')
def write_type_declarations(parser, fp):
fp.write('/* ---------- forward type declarations ---------- */\n')
for obj in parser.boxes:
fp.write('PyTypeObject Py' + obj.c_name + '_Type;\n')
for obj in parser.objects:
fp.write('PyTypeObject Py' + obj.c_name + '_Type;\n')
for obj in parser.miniobjects:
fp.write('PyTypeObject Py' + obj.c_name + '_Type;\n')
for interface in parser.interfaces:
fp.write('PyTypeObject Py' + interface.c_name + '_Type;\n')
fp.write('\n')
def write_classes(parser, overrides, fp):
for klass, items in ((GBoxedWrapper, parser.boxes),
(GPointerWrapper, parser.pointers),
(GObjectWrapper, parser.objects),
(GstMiniObjectWrapper, parser.miniobjects),
(GInterfaceWrapper, parser.interfaces)):
for item in items:
instance = klass(parser, item, overrides, fp)
instance.write_class()
fp.write('\n')
def write_enums(parser, prefix, fp=sys.stdout):
if not parser.enums:
return
fp.write('\n/* ----------- enums and flags ----------- */\n\n')
fp.write('void\n' + prefix + '_add_constants(PyObject *module, const gchar *strip_prefix)\n{\n')
for enum in parser.enums:
if enum.typecode is None:
for nick, value in enum.values:
fp.write(' PyModule_AddIntConstant(module, pyg_constant_strip_prefix("%s", strip_prefix), %s);\n'
% (value, value))
else:
if enum.deftype == 'enum':
fp.write(' pyg_enum_add_constants(module, %s, strip_prefix);\n'
% (enum.typecode,))
else:
fp.write(' pyg_flags_add_constants(module, %s, strip_prefix);\n'
% (enum.typecode,))
fp.write('}\n\n')
def write_extension_init(overrides, prefix, fp):
fp.write('/* intialise stuff extension classes */\n')
fp.write('void\n' + prefix + '_register_classes(PyObject *d)\n{\n')
imports = overrides.get_imports()[:]
if imports:
bymod = {}
for module, pyname, cname in imports:
bymod.setdefault(module, []).append((pyname, cname))
fp.write(' PyObject *module;\n\n')
for module in bymod:
fp.write(' if ((module = PyImport_ImportModule("%s")) != NULL) {\n' % module)
fp.write(' PyObject *moddict = PyModule_GetDict(module);\n\n')
for pyname, cname in bymod[module]:
fp.write(' _%s = (PyTypeObject *)PyDict_GetItemString(moddict, "%s");\n' % (cname, pyname))
fp.write(' if (_%s == NULL) {\n' % cname)
fp.write(' PyErr_SetString(PyExc_ImportError,\n')
fp.write(' "cannot import name %s from %s");\n'
% (pyname, module))
fp.write(' return;\n')
fp.write(' }\n')
fp.write(' } else {\n')
fp.write(' PyErr_SetString(PyExc_ImportError,\n')
fp.write(' "could not import %s");\n' % module)
fp.write(' return;\n')
fp.write(' }\n')
fp.write('\n')
fp.write(overrides.get_init() + '\n')
fp.resetline()
def write_registers(parser, fp):
for boxed in parser.boxes:
fp.write(' pyg_register_boxed(d, "' + boxed.name +
'", ' + boxed.typecode + ', &Py' + boxed.c_name + '_Type);\n')
for pointer in parser.pointers:
fp.write(' pyg_register_pointer(d, "' + pointer.name +
'", ' + pointer.typecode + ', &Py' + pointer.c_name + '_Type);\n')
for interface in parser.interfaces:
fp.write(' pyg_register_interface(d, "' + interface.name +
'", '+ interface.typecode + ', &Py' + interface.c_name +
'_Type);\n')
objects = parser.objects[:]
pos = 0
while pos < len(objects):
parent = objects[pos].parent
for i in range(pos+1, len(objects)):
if objects[i].c_name == parent:
objects.insert(i+1, objects[pos])
del objects[pos]
break
else:
pos = pos + 1
for obj in objects:
bases = []
if obj.parent != None:
bases.append(obj.parent)
bases = bases + obj.implements
if bases:
fp.write(' pygobject_register_class(d, "' + obj.c_name +
'", ' + obj.typecode + ', &Py' + obj.c_name +
'_Type, Py_BuildValue("(' + 'O' * len(bases) + ')", ' +
string.join(map(lambda s: '&Py'+s+'_Type', bases), ', ') +
'));\n')
else:
fp.write(' pygobject_register_class(d, "' + obj.c_name +
'", ' + obj.typecode + ', &Py' + obj.c_name +
'_Type, NULL);\n')
#TODO: register mini-objects
miniobjects = parser.miniobjects[:]
for obj in miniobjects:
bases = []
if obj.parent != None:
bases.append(obj.parent)
bases = bases + obj.implements
if bases:
fp.write(' pygstminiobject_register_class(d, "' + obj.c_name +
'", ' + obj.typecode + ', &Py' + obj.c_name +
'_Type, Py_BuildValue("(' + 'O' * len(bases) + ')", ' +
string.join(map(lambda s: '&Py'+s+'_Type', bases), ', ') +
'));\n')
else:
fp.write(' pygstminiobject_register_class(d, "' + obj.c_name +
'", ' + obj.typecode + ', &Py' + obj.c_name +
'_Type, NULL);\n')
fp.write('}\n')
def write_source(parser, overrides, prefix, fp=FileOutput(sys.stdout)):
write_headers(overrides.get_headers(), fp)
write_imports(overrides, fp)
write_type_declarations(parser, fp)
write_classes(parser, overrides, fp)
wrapper = Wrapper(parser, None, overrides, fp)
wrapper.write_functions(prefix)
write_enums(parser, prefix, fp)
write_extension_init(overrides, prefix, fp)
write_registers(parser, fp)
def register_types(parser):
for boxed in parser.boxes:
argtypes.matcher.register_boxed(boxed.c_name, boxed.typecode)
for pointer in parser.pointers:
argtypes.matcher.register_pointer(pointer.c_name, pointer.typecode)
for obj in parser.objects:
argtypes.matcher.register_object(obj.c_name, obj.parent, obj.typecode)
for obj in parser.miniobjects:
argtypes.matcher.register_miniobject(obj.c_name, obj.parent, obj.typecode)
for obj in parser.interfaces:
argtypes.matcher.register_object(obj.c_name, None, obj.typecode)
for enum in parser.enums:
if enum.deftype == 'flags':
argtypes.matcher.register_flag(enum.c_name, enum.typecode)
else:
argtypes.matcher.register_enum(enum.c_name, enum.typecode)
usage = 'usage: codegen.py [-o overridesfile] [-p prefix] defsfile'
def main(argv):
o = override.Overrides()
prefix = 'pygtk'
outfilename = None
errorfilename = None
opts, args = getopt.getopt(argv[1:], "o:p:r:t:D:",
["override=", "prefix=", "register=", "outfilename=",
"load-types=", "errorfilename="])
defines = {} # -Dkey[=val] options
for opt, arg in opts:
if opt in ('-o', '--override'):
o = override.Overrides(arg)
elif opt in ('-p', '--prefix'):
prefix = arg
elif opt in ('-r', '--register'):
# Warning: user has to make sure all -D options appear before -r
p = defsparser.DefsParser(arg, defines)
p.startParsing()
register_types(p)
del p
elif opt == '--outfilename':
outfilename = arg
elif opt == '--errorfilename':
errorfilename = arg
elif opt in ('-t', '--load-types'):
globals = {}
execfile(arg, globals)
elif opt == '-D':
nameval = arg.split('=')
try:
defines[nameval[0]] = nameval[1]
except IndexError:
defines[nameval[0]] = None
if len(args) < 1:
print >> sys.stderr, usage
return 1
if errorfilename:
sys.stderr = open(errorfilename, "w")
p = defsparser.DefsParser(args[0], defines)
if not outfilename:
outfilename = os.path.splitext(args[0])[0] + '.c'
p.startParsing()
register_types(p)
write_source(p, o, prefix, FileOutput(sys.stdout, outfilename))
if __name__ == '__main__':
sys.exit(main(sys.argv))