aubiodefvalue = {    # we have some clean up to do    'buf_size': 'Py_default_vector_length',    'win_s': 'Py_default_vector_length',    # and here too    'hop_size': 'Py_default_vector_length / 2',    'hop_s': 'Py_default_vector_length / 2',    # these should be alright    'samplerate': 'Py_aubio_default_samplerate',    # now for the non obvious ones    'n_filters': '40',    'n_coeffs': '13',    'nelems': '10',    'flow': '0.',    'fhig': '1.',    'ilow': '0.',    'ihig': '1.',    'thrs': '0.5',    'ratio': '0.5',    'method': '"default"',    'uri': '"none"',    } member_types = {        'name': 'type',        'char_t*': 'T_STRING',        'uint_t': 'T_INT',        'smpl_t': 'T_FLOAT',        } pyfromtype_fn = {        'smpl_t': 'PyFloat_FromDouble',        'uint_t': 'PyLong_FromLong', # was: 'PyInt_FromLong',        'fvec_t*': 'PyAubio_CFvecToArray',        'fmat_t*': 'PyAubio_CFmatToArray',        } pytoaubio_fn = {        'fvec_t*': 'PyAubio_ArrayToCFvec',        'cvec_t*': 'PyAubio_ArrayToCCvec',        'fmat_t*': 'PyAubio_ArrayToCFmat',        } pyfromaubio_fn = {        'fvec_t*': 'PyAubio_CFvecToArray',        'cvec_t*': 'PyAubio_CCvecToArray',        'fmat_t*': 'PyAubio_CFmatToArray',        } newfromtype_fn = {        'fvec_t*': 'new_fvec',        'fmat_t*': 'new_fmat',        'cvec_t*': 'new_cvec',        } delfromtype_fn = {        'fvec_t*': 'del_fvec',        'fmat_t*': 'del_fmat',        'cvec_t*': 'del_cvec',        } param_init = {        'char_t*': 'NULL',        'uint_t': '0',        'sint_t': 0,        'smpl_t': 0.,        'lsmp_t': 0.,        } pyargparse_chars = {        'smpl_t': 'f',        'uint_t': 'I',        'sint_t': 'I',        'char_t*': 's',        'fmat_t*': 'O',        'fvec_t*': 'O',        } objoutsize = {        'onset': '1',        'pitch': '1',        'wavetable': 'self->hop_size',        'sampler': 'self->hop_size',        'mfcc': 'self->n_coeffs',        'specdesc': '1',        'tempo': '1',        'filterbank': 'self->n_filters',        } def get_name(proto):    name = proto.replace(' *', '* ').split()[1].split('(')[0]    name = name.replace('*','')    if name == '': raise ValueError(proto + "gave empty name")    return name def get_return_type(proto):    import re    paramregex = re.compile('(\w+ ?\*?).*')    outputs = paramregex.findall(proto)    assert len(outputs) == 1    return outputs[0].replace(' ', '') def split_type(arg):    """ arg = 'foo *name'         return ['foo*', 'name'] """    l = arg.split()    type_arg = {'type': l[0], 'name': l[1]}    # ['foo', '*name'] -> ['foo*', 'name']    if l[-1].startswith('*'):        #return [l[0]+'*', l[1][1:]]        type_arg['type'] = l[0] + '*'        type_arg['name'] = l[1][1:]    # ['foo', '*', 'name'] -> ['foo*', 'name']    if len(l) == 3:        #return [l[0]+l[1], l[2]]        type_arg['type'] = l[0]+l[1]        type_arg['name'] = l[2]    else:        #return l        pass    return type_arg def get_params(proto):    """ get the list of parameters from a function prototype    example: proto = "int main (int argc, char ** argv)"    returns: ['int argc', 'char ** argv']    """    import re    paramregex = re.compile('[\(, ](\w+ \*?\*? ?\w+)[, \)]')    return paramregex.findall(proto) def get_params_types_names(proto):    """ get the list of parameters from a function prototype    example: proto = "int main (int argc, char ** argv)"    returns: [['int', 'argc'], ['char **','argv']]    """    return list(map(split_type, get_params(proto)))  class MappedObject(object):     def __init__(self, prototypes):        self.prototypes = prototypes         self.shortname = prototypes['shortname']        self.longname = prototypes['longname']        self.new_proto = prototypes['new'][0]        self.del_proto = prototypes['del'][0]        self.do_proto = prototypes['do'][0]        self.input_params = get_params_types_names(self.new_proto)        self.input_params_list = "; ".join(get_params(self.new_proto))        self.outputs = get_params_types_names(self.do_proto)[2:]        self.outputs_flat = get_params(self.do_proto)[2:]        self.output_results = ", ".join(self.outputs_flat)     def gen_code(self):        out = ""        out += self.gen_struct()        out += self.gen_doc()        out += self.gen_new()        out += self.gen_init()        out += self.gen_del()        out += self.gen_do()        out += self.gen_memberdef()        out += self.gen_set()        out += self.gen_get()        out += self.gen_methodef()        out += self.gen_typeobject()        return out     def gen_struct(self):        out = """// {shortname} structuretypedef struct{{    PyObject_HEAD    // pointer to aubio object    {longname} *o;    // input parameters    {input_params_list};    // output results    {output_results};}} Py_{shortname};"""        return out.format(**self.__dict__)     def gen_doc(self):        out = """// TODO: add documentationstatic char Py_{shortname}_doc[] = \"undefined\";    """        return out.format(**self.__dict__)     def gen_new(self):        out = """// new {shortname}static PyObject *Py_{shortname}_new (PyTypeObject * pytype, PyObject * args, PyObject * kwds){{    Py_{shortname} *self;""".format(**self.__dict__)        params = self.input_params        for p in params:            out += """    {type} {name} = {defval};""".format(defval = param_init[p['type']], **p)        plist = ", ".join(["\"%s\"" % p['name'] for p in params])        out += """    static char *kwlist[] = {{ {plist}, NULL }};""".format(plist = plist)        argchars = "".join([pyargparse_chars[p['type']] for p in params])        arglist = ", ".join(["&%s" % p['name'] for p in params])        out += """    if (!PyArg_ParseTupleAndKeywords (args, kwds, "|{argchars}", kwlist,              {arglist})) {{        return NULL;    }}""".format(argchars = argchars, arglist = arglist)        out += """    self = (Py_{shortname} *) pytype->tp_alloc (pytype, 0);    if (self == NULL) {{        return NULL;    }}""".format(**self.__dict__)        params = self.input_params        for p in params:            out += self.check_valid(p)         out += """    return (PyObject *)self;}"""        return out     def check_valid(self, p):        if p['type'] == 'uint_t':            return self.check_valid_uint(p)        if p['type'] == 'char_t*':            return self.check_valid_char(p)        else:            print ("ERROR, no idea how to check %s for validity" % p['type'])     def check_valid_uint(self, p):        name = p['name']        return """    self->{name} = {defval};    if ((sint_t){name} > 0) {{        self->{name} = {name};    }} else if ((sint_t){name} < 0) {{        PyErr_SetString (PyExc_ValueError, "can not use negative value for {name}");        return NULL;    }}""".format(defval = aubiodefvalue[name], name = name)     def check_valid_char(self, p):        name = p['name']        return """    self->{name} = {defval};    if ({name} != NULL) {{        self->{name} = {name};    }}""".format(defval = aubiodefvalue[name], name = name)     def gen_init(self):        out = """// init {shortname}static intPy_{shortname}_init (Py_{shortname} * self, PyObject * args, PyObject * kwds){{""".format(**self.__dict__)        new_name = get_name(self.new_proto)        new_params = ", ".join(["self->%s" % s['name'] for s in self.input_params])        out += """  self->o = {new_name}({new_params});""".format(new_name = new_name, new_params = new_params)        paramchars = "%s"        paramvals = "self->method"        out += """  // return -1 and set error string on failure  if (self->o == NULL) {{    //char_t errstr[30 + strlen(self->uri)];    //sprintf(errstr, "error creating {shortname} with params {paramchars}", {paramvals});    char_t errstr[60];    sprintf(errstr, "error creating {shortname} with given params");    PyErr_SetString (PyExc_Exception, errstr);    return -1;  }}""".format(paramchars = paramchars, paramvals = paramvals, **self.__dict__)        output_create = ""        for o in self.outputs:            output_create += """  self->{name} = {create_fn}({output_size});""".format(name = o['name'], create_fn = newfromtype_fn[o['type']], output_size = objoutsize[self.shortname])        out += """  // TODO get internal params after actual object creation?"""        out += """  // create outputs{output_create}""".format(output_create = output_create)        out += """  return 0;}"""        return out     def gen_memberdef(self):        out = """static PyMemberDef Py_{shortname}_members[] = {{""".format(**self.__dict__)        for p in get_params_types_names(self.new_proto):            tmp = "  {{\"{name}\", {ttype}, offsetof (Py_{shortname}, {name}), READONLY, \"TODO documentation\"}},\n"            pytype = member_types[p['type']]            out += tmp.format(name = p['name'], ttype = pytype, shortname = self.shortname)        out += """  {NULL}, // sentinel};"""        return out     def gen_del(self):        out = """// del {shortname}static voidPy_{shortname}_del  (Py_{shortname} * self, PyObject * unused){{""".format(**self.__dict__)        for o in self.outputs:            name = o['name']            del_out = delfromtype_fn[o['type']]            out += """    {del_out}(self->{name});""".format(del_out = del_out, name = name)        del_fn = get_name(self.del_proto)        out += """    {del_fn}(self->o);    Py_TYPE(self)->tp_free((PyObject *) self);}}""".format(del_fn = del_fn)        return out     def gen_do(self):        do_fn = get_name(self.do_proto)        input_param = get_params_types_names(self.do_proto)[1];        pytoaubio = pytoaubio_fn[input_param['type']]        output = self.outputs[0]        out = """// do {shortname}static PyObject*Py_{shortname}_do  (Py_{shortname} * self, PyObject * args){{    PyObject * in_obj;    {input_type} {input_name};     if (!PyArg_ParseTuple (args, "O", &in_obj)) {{        return NULL;    }}    {input_name} = {pytoaubio} (in_obj);     if ({input_name} == NULL) {{        return NULL;    }}     {do_fn}(self->o, {input_name}, {outputs});     return (PyObject *) {aubiotonumpy} ({outputs});}}"""        return out.format(do_fn = do_fn,                shortname = self.prototypes['shortname'],                input_name = input_param['name'],                input_type= input_param['type'],                pytoaubio = pytoaubio,                outputs = ", ".join(["self->%s" % p['name'] for p in self.outputs]),                aubiotonumpy = pyfromaubio_fn[output['type']],                 )     def gen_set(self):        out = """// {shortname} setters""".format(**self.__dict__)        for set_param in self.prototypes['set']:            params = get_params_types_names(set_param)[1]            paramtype = params['type']            method_name = get_name(set_param)            param = method_name.split('aubio_'+self.shortname+'_set_')[-1]            pyparamtype = pyargparse_chars[paramtype]            out += """static PyObject *Pyaubio_{shortname}_set_{param} (Py_{shortname} *self, PyObject *args){{  uint_t err = 0;  {paramtype} {param};   if (!PyArg_ParseTuple (args, "{pyparamtype}", &{param})) {{    return NULL;  }}  err = aubio_{shortname}_set_{param} (self->o, {param});   if (err > 0) {{    PyErr_SetString (PyExc_ValueError, "error running aubio_{shortname}_set_{param}");    return NULL;  }}  Py_RETURN_NONE;}}""".format(param = param, paramtype = paramtype, pyparamtype = pyparamtype, **self.__dict__)        return out     def gen_get(self):        out = """// {shortname} getters""".format(**self.__dict__)        for method in self.prototypes['get']:            params = get_params_types_names(method)            method_name = get_name(method)            assert len(params) == 1, \                "get method has more than one parameter %s" % params            param = method_name.split('aubio_'+self.shortname+'_get_')[-1]            paramtype = get_return_type(method)            ptypeconv = pyfromtype_fn[paramtype]            out += """static PyObject *Pyaubio_{shortname}_get_{param} (Py_{shortname} *self, PyObject *unused){{  {ptype} {param} = aubio_{shortname}_get_{param} (self->o);  return (PyObject *){ptypeconv} ({param});}}""".format(param = param, ptype = paramtype, ptypeconv = ptypeconv,        **self.__dict__)        return out     def gen_methodef(self):        out = """static PyMethodDef Py_{shortname}_methods[] = {{""".format(**self.__dict__)        for m in self.prototypes['set']:            name = get_name(m)            shortname = name.replace('aubio_%s_' % self.shortname, '')            out += """  {{"{shortname}", (PyCFunction) Py{name},    METH_VARARGS, ""}},""".format(name = name, shortname = shortname)        for m in self.prototypes['get']:            name = get_name(m)            shortname = name.replace('aubio_%s_' % self.shortname, '')            out += """  {{"{shortname}", (PyCFunction) Py{name},    METH_NOARGS, ""}},""".format(name = name, shortname = shortname)        out += """  {NULL} /* sentinel */};"""        return out     def gen_typeobject(self):        return """PyTypeObject Py_{shortname}Type = {{  //PyObject_HEAD_INIT (NULL)  //0,  PyVarObject_HEAD_INIT (NULL, 0)  "aubio.{shortname}",  sizeof (Py_{shortname}),  0,  (destructor) Py_{shortname}_del,  0,  0,  0,  0,  0,  0,  0,  0,  0,  (ternaryfunc)Py_{shortname}_do,  0,  0,  0,  0,  Py_TPFLAGS_DEFAULT,  Py_{shortname}_doc,  0,  0,  0,  0,  0,  0,  Py_{shortname}_methods,  Py_{shortname}_members,  0,  0,  0,  0,  0,  0,  (initproc) Py_{shortname}_init,  0,  Py_{shortname}_new,}};""".format(**self.__dict__)