def get_default_assign(self, arg, func_arg):
if arg.rank > 0 :
return AliasAssign(arg, Nil())
elif func_arg.is_optional:
return AliasAssign(arg, Py_None)
elif isinstance(arg.dtype, (NativeReal, NativeInteger, NativeBool)):
return Assign(arg, func_arg.value)
elif isinstance(arg.dtype, PyccelPyObject):
return AliasAssign(arg, Py_None)
else:
raise NotImplementedError('Default values are not implemented for this datatype : {}'.format(func_arg.dtype))
def _print_FunctionDef(self, expr):
# Save all used names
used_names = set([a.name for a in expr.arguments] +
[r.name for r in expr.results] + [expr.name.name])
# Find a name for the wrapper function
wrapper_name = self._get_wrapper_name(used_names, expr)
used_names.add(wrapper_name)
# Collect local variables
wrapper_vars = {a.name: a for a in expr.arguments}
wrapper_vars.update({r.name: r for r in expr.results})
python_func_args = self.get_new_PyObject("args", used_names)
python_func_kwargs = self.get_new_PyObject("kwargs", used_names)
python_func_selfarg = self.get_new_PyObject("self", used_names)
# Collect arguments and results
wrapper_args = [
python_func_selfarg, python_func_args, python_func_kwargs
]
wrapper_results = [self.get_new_PyObject("result", used_names)]
if expr.is_private:
wrapper_func = FunctionDef(
name=wrapper_name,
arguments=wrapper_args,
results=wrapper_results,
body=[
PyErr_SetString(
'PyExc_NotImplementedError',
'"Private functions are not accessible from python"'),
AliasAssign(wrapper_results[0], Nil()),
Return(wrapper_results)
])
return CCodePrinter._print_FunctionDef(self, wrapper_func)
if any(isinstance(arg, FunctionAddress) for arg in expr.arguments):
wrapper_func = FunctionDef(
name=wrapper_name,
arguments=wrapper_args,
results=wrapper_results,
body=[
PyErr_SetString('PyExc_NotImplementedError',
'"Cannot pass a function as an argument"'),
AliasAssign(wrapper_results[0], Nil()),
Return(wrapper_results)
])
return CCodePrinter._print_FunctionDef(self, wrapper_func)
# Collect argument names for PyArgParse
arg_names = [a.name for a in expr.arguments]
keyword_list_name = self.get_new_name(used_names, 'kwlist')
keyword_list = PyArgKeywords(keyword_list_name, arg_names)
wrapper_body = [keyword_list]
wrapper_body_translations = []
parse_args = []
collect_vars = {}
for arg in expr.arguments:
collect_var, cast_func = self.get_PyArgParseType(used_names, arg)
collect_vars[arg] = collect_var
body, tmp_variable = self._body_management(used_names, arg,
collect_var, cast_func,
True)
if tmp_variable:
wrapper_vars[tmp_variable.name] = tmp_variable
# If the variable cannot be collected from PyArgParse directly
wrapper_vars[collect_var.name] = collect_var
# Save cast to argument variable
wrapper_body_translations.extend(body)
parse_args.append(collect_var)
# Write default values
if isinstance(arg, ValuedVariable):
wrapper_body.append(
self.get_default_assign(parse_args[-1], arg))
# Parse arguments
parse_node = PyArg_ParseTupleNode(python_func_args, python_func_kwargs,
expr.arguments, parse_args,
keyword_list)
wrapper_body.append(If((PyccelNot(parse_node), [Return([Nil()])])))
wrapper_body.extend(wrapper_body_translations)
# Call function
static_function, static_args, additional_body = self._get_static_function(
used_names, expr, collect_vars)
wrapper_body.extend(additional_body)
for var in static_args:
wrapper_vars[var.name] = var
if len(expr.results) == 0:
func_call = FunctionCall(static_function, static_args)
else:
results = expr.results if len(
expr.results) > 1 else expr.results[0]
func_call = Assign(results,
FunctionCall(static_function, static_args))
wrapper_body.append(func_call)
# Loop over results to carry out necessary casts and collect Py_BuildValue type string
res_args = []
for a in expr.results:
collect_var, cast_func = self.get_PyBuildValue(used_names, a)
if cast_func is not None:
wrapper_vars[collect_var.name] = collect_var
wrapper_body.append(AliasAssign(collect_var, cast_func))
res_args.append(
VariableAddress(collect_var) if collect_var.
is_pointer else collect_var)
# Call PyBuildNode
wrapper_body.append(
AliasAssign(wrapper_results[0], PyBuildValueNode(res_args)))
# Call free function for python type
wrapper_body += [
FunctionCall(Py_DECREF, [i]) for i in self._to_free_PyObject_list
]
self._to_free_PyObject_list.clear()
#Return
wrapper_body.append(Return(wrapper_results))
# Create FunctionDef and write using classic method
wrapper_func = FunctionDef(name=wrapper_name,
arguments=wrapper_args,
results=wrapper_results,
body=wrapper_body,
local_vars=wrapper_vars.values())
return CCodePrinter._print_FunctionDef(self, wrapper_func)
def _print_Interface(self, expr):
# Collecting all functions
funcs = expr.functions
# Save all used names
used_names = set(n.name for n in funcs)
# Find a name for the wrapper function
wrapper_name = self._get_wrapper_name(used_names, expr)
self._global_names.add(wrapper_name)
# Collect local variables
python_func_args = self.get_new_PyObject("args", used_names)
python_func_kwargs = self.get_new_PyObject("kwargs", used_names)
python_func_selfarg = self.get_new_PyObject("self", used_names)
# Collect wrapper arguments and results
wrapper_args = [
python_func_selfarg, python_func_args, python_func_kwargs
]
wrapper_results = [self.get_new_PyObject("result", used_names)]
# Collect parser arguments
wrapper_vars = {}
# Collect argument names for PyArgParse
arg_names = [a.name for a in funcs[0].arguments]
keyword_list_name = self.get_new_name(used_names, 'kwlist')
keyword_list = PyArgKeywords(keyword_list_name, arg_names)
wrapper_body = [keyword_list]
wrapper_body_translations = []
body_tmp = []
# To store the mini function responsible of collecting value and calling interfaces functions and return the builded value
funcs_def = []
default_value = {
} # dict to collect all initialisation needed in the wrapper
check_var = Variable(dtype=NativeInteger(),
name=self.get_new_name(used_names, "check"))
wrapper_vars[check_var.name] = check_var
types_dict = OrderedDict(
(a, set()) for a in funcs[0].arguments
) #dict to collect each variable possible type and the corresponding flags
# collect parse arg
parse_args = [
Variable(dtype=PyccelPyArrayObject(),
is_pointer=True,
rank=a.rank,
order=a.order,
name=self.get_new_name(used_names, a.name +
"_tmp")) if a.rank > 0 else
Variable(dtype=PyccelPyObject(),
name=self.get_new_name(used_names, a.name + "_tmp"),
is_pointer=True) for a in funcs[0].arguments
]
# Managing the body of wrapper
for func in funcs:
mini_wrapper_func_body = []
res_args = []
mini_wrapper_func_vars = {a.name: a for a in func.arguments}
flags = 0
collect_vars = {}
# Loop for all args in every functions and create the corresponding condition and body
for p_arg, f_arg in zip(parse_args, func.arguments):
collect_vars[f_arg] = p_arg
body, tmp_variable = self._body_management(
used_names, f_arg, p_arg, None)
if tmp_variable:
mini_wrapper_func_vars[tmp_variable.name] = tmp_variable
# get check type function
check = self._get_check_type_statement(f_arg, p_arg)
# If the variable cannot be collected from PyArgParse directly
wrapper_vars[p_arg.name] = p_arg
# Save the body
wrapper_body_translations.extend(body)
# Write default values
if isinstance(f_arg, ValuedVariable):
wrapper_body.append(
self.get_default_assign(parse_args[-1], f_arg))
flag_value = flags_registry[(f_arg.dtype, f_arg.precision)]
flags = (flags << 4) + flag_value # shift by 4 to the left
types_dict[f_arg].add(
(f_arg, check,
flag_value)) # collect variable type for each arguments
mini_wrapper_func_body += body
# create the corresponding function call
static_function, static_args, additional_body = self._get_static_function(
used_names, func, collect_vars)
mini_wrapper_func_body.extend(additional_body)
for var in static_args:
mini_wrapper_func_vars[var.name] = var
if len(func.results) == 0:
func_call = FunctionCall(static_function, static_args)
else:
results = func.results if len(
func.results) > 1 else func.results[0]
func_call = Assign(results,
FunctionCall(static_function, static_args))
mini_wrapper_func_body.append(func_call)
# Loop for all res in every functions and create the corresponding body and cast
for r in func.results:
collect_var, cast_func = self.get_PyBuildValue(used_names, r)
mini_wrapper_func_vars[collect_var.name] = collect_var
if cast_func is not None:
mini_wrapper_func_vars[r.name] = r
mini_wrapper_func_body.append(
AliasAssign(collect_var, cast_func))
res_args.append(
VariableAddress(collect_var) if collect_var.
is_pointer else collect_var)
# Building PybuildValue and freeing the allocated variable after.
mini_wrapper_func_body.append(
AliasAssign(wrapper_results[0], PyBuildValueNode(res_args)))
mini_wrapper_func_body += [
FunctionCall(Py_DECREF, [i])
for i in self._to_free_PyObject_list
]
mini_wrapper_func_body.append(Return(wrapper_results))
self._to_free_PyObject_list.clear()
# Building Mini wrapper function
mini_wrapper_func_name = self.get_new_name(
used_names.union(self._global_names),
func.name.name + '_mini_wrapper')
self._global_names.add(mini_wrapper_func_name)
mini_wrapper_func_def = FunctionDef(
name=mini_wrapper_func_name,
arguments=parse_args,
results=wrapper_results,
body=mini_wrapper_func_body,
local_vars=mini_wrapper_func_vars.values())
funcs_def.append(mini_wrapper_func_def)
# append check condition to the functioncall
body_tmp.append((PyccelEq(check_var, LiteralInteger(flags)), [
AliasAssign(wrapper_results[0],
FunctionCall(mini_wrapper_func_def, parse_args))
]))
# Errors / Types management
# Creating check_type function
check_func_def = self._create_wrapper_check(check_var, parse_args,
types_dict, used_names,
funcs[0].name.name)
funcs_def.append(check_func_def)
# Create the wrapper body with collected informations
body_tmp = [((PyccelNot(check_var), [Return([Nil()])]))] + body_tmp
body_tmp.append((LiteralTrue(), [
PyErr_SetString('PyExc_TypeError',
'"Arguments combinations don\'t exist"'),
Return([Nil()])
]))
wrapper_body_translations = [If(*body_tmp)]
# Parsing Arguments
parse_node = PyArg_ParseTupleNode(python_func_args, python_func_kwargs,
funcs[0].arguments, parse_args,
keyword_list, True)
wrapper_body += list(default_value.values())
wrapper_body.append(If((PyccelNot(parse_node), [Return([Nil()])])))
#finishing the wrapper body
wrapper_body.append(
Assign(check_var, FunctionCall(check_func_def, parse_args)))
wrapper_body.extend(wrapper_body_translations)
wrapper_body.append(Return(wrapper_results)) # Return
# Create FunctionDef
funcs_def.append(
FunctionDef(name=wrapper_name,
arguments=wrapper_args,
results=wrapper_results,
body=wrapper_body,
local_vars=wrapper_vars.values()))
sep = self._print(SeparatorComment(40))
return sep + '\n'.join(
CCodePrinter._print_FunctionDef(self, f) for f in funcs_def)