def test_function_pointer(self):
"""
Test working with pointers and function pointers.
"""
decls = parser.parse([self.header], self.config)
global_ns = declarations.get_global_namespace(decls)
# Test on a function pointer
criteria = declarations.variable_matcher(name="func1")
variables = declarations.matcher.find(criteria, global_ns)
self.assertTrue(variables[0].name == "func1")
self.assertTrue(
isinstance(variables[0].decl_type, declarations.pointer_t))
self.assertTrue(
str(variables[0].decl_type) == "void (*)( int,double )")
self.assertTrue(
declarations.is_calldef_pointer(variables[0].decl_type))
self.assertTrue(
isinstance(declarations.remove_pointer(variables[0].decl_type),
declarations.free_function_type_t))
# Get the function (free_function_type_t) and test the return and
# argument types
function = variables[0].decl_type.base
self.assertTrue(isinstance(function.return_type, declarations.void_t))
self.assertTrue(
isinstance(function.arguments_types[0], declarations.int_t))
self.assertTrue(
isinstance(function.arguments_types[1], declarations.double_t))
# Test on a normal pointer
criteria = declarations.variable_matcher(name="myPointer")
variables = declarations.matcher.find(criteria, global_ns)
self.assertTrue(variables[0].name == "myPointer")
self.assertTrue(
isinstance(variables[0].decl_type, declarations.pointer_t))
self.assertFalse(
declarations.is_calldef_pointer(variables[0].decl_type))
self.assertTrue(
isinstance(declarations.remove_pointer(variables[0].decl_type),
declarations.volatile_t))
# Test on function pointer in struct (x8)
for d in global_ns.declarations:
if d.name == "x8":
self.assertTrue(
isinstance(d.decl_type, declarations.pointer_t))
self.assertTrue(declarations.is_calldef_pointer(d.decl_type))
self.assertTrue(
isinstance(
declarations.remove_pointer(d.decl_type),
declarations.member_function_type_t))
self.assertTrue(
str(declarations.remove_pointer(d.decl_type)) ==
"void ( ::some_struct_t::* )( )")
def test_function_pointer(self):
"""
Test working with pointers and function pointers.
"""
decls = parser.parse([self.header], self.config)
global_ns = declarations.get_global_namespace(decls)
# Test on a function pointer
criteria = declarations.variable_matcher(name="func1")
variables = declarations.matcher.find(criteria, global_ns)
self.assertTrue(variables[0].name == "func1")
self.assertTrue(
isinstance(variables[0].decl_type, declarations.pointer_t))
self.assertTrue(
str(variables[0].decl_type) == "void (*)( int,double )")
self.assertTrue(
declarations.is_calldef_pointer(variables[0].decl_type))
self.assertTrue(
isinstance(declarations.remove_pointer(variables[0].decl_type),
declarations.free_function_type_t))
# Get the function (free_function_type_t) and test the return and
# argument types
function = variables[0].decl_type.base
self.assertTrue(isinstance(function.return_type, declarations.void_t))
self.assertTrue(
isinstance(function.arguments_types[0], declarations.int_t))
self.assertTrue(
isinstance(function.arguments_types[1], declarations.double_t))
# Test on a normal pointer
criteria = declarations.variable_matcher(name="myPointer")
variables = declarations.matcher.find(criteria, global_ns)
self.assertTrue(variables[0].name == "myPointer")
self.assertTrue(
isinstance(variables[0].decl_type, declarations.pointer_t))
self.assertFalse(
declarations.is_calldef_pointer(variables[0].decl_type))
self.assertTrue(
isinstance(declarations.remove_pointer(variables[0].decl_type),
declarations.volatile_t))
# Test on function pointer in struct (x8)
for d in global_ns.declarations:
if d.name == "x8":
self.assertTrue(
isinstance(d.decl_type, declarations.pointer_t))
self.assertTrue(declarations.is_calldef_pointer(d.decl_type))
self.assertTrue(
isinstance(
declarations.remove_pointer(d.decl_type),
declarations.member_function_type_t))
self.assertTrue(
str(declarations.remove_pointer(d.decl_type)) ==
"void ( ::some_struct_t::* )( )")
def visit_pointer( self ):
no_ptr = declarations.remove_const( declarations.remove_pointer( self.user_type ) )
if declarations.is_same( declarations.char_t(), no_ptr ) and self.treat_char_ptr_as_binary_data == False:
return "ctypes.c_char_p"
elif declarations.is_same( declarations.wchar_t(), no_ptr ) and self.treat_char_ptr_as_binary_data == False:
return "ctypes.c_wchar_p"
elif declarations.is_same( declarations.void_t(), no_ptr ):
return "ctypes.c_void_p"
else:
base_visitor = self.create_converter( self.user_type.base )
internal_type_str = declarations.apply_visitor( base_visitor, base_visitor.user_type )
if declarations.is_calldef_pointer( self.user_type ):
return internal_type_str
else:
return "ctypes.POINTER( %s )" % internal_type_str
def select_problematics( calldef ):
"""Return list of problematic functions for function "calldef" """
if 1 != len( calldef.required_args ):
return []
arg_type = calldef.arguments[0].type
if declarations.is_calldef_pointer( arg_type ):
return []
problematics = []
for f in calldef.overloads:
if 1 != len( f.required_args ):
continue
if f.ignore:
continue
if None != registration_order.is_related( calldef.arguments[0].type, f.arguments[0].type ):
problematics.append( f )
return problematics
def select_problematics( calldef ):
"""Return list of problematic functions for function "calldef" """
if 1 != len( calldef.required_args ):
return []
arg_type = calldef.arguments[0].type
if declarations.is_calldef_pointer( arg_type ):
return []
problematics = []
for f in calldef.overloads:
if 1 != len( f.required_args ):
continue
if f.ignore:
continue
if None != registration_order.is_related( calldef.arguments[0].type, f.arguments[0].type ):
problematics.append( f )
return problematics
def visit_pointer(self):
no_ptr = declarations.remove_const(
declarations.remove_pointer(self.user_type))
if declarations.is_same(
declarations.char_t(),
no_ptr) and self.treat_char_ptr_as_binary_data == False:
return "ctypes.c_char_p"
elif declarations.is_same(
declarations.wchar_t(),
no_ptr) and self.treat_char_ptr_as_binary_data == False:
return "ctypes.c_wchar_p"
elif declarations.is_same(declarations.void_t(), no_ptr):
return "ctypes.c_void_p"
else:
base_visitor = self.create_converter(self.user_type.base)
internal_type_str = declarations.apply_visitor(
base_visitor, base_visitor.user_type)
if declarations.is_calldef_pointer(self.user_type):
return internal_type_str
else:
return "ctypes.POINTER( %s )" % internal_type_str
function_ptr = global_namespace.variables()[0] # Print the name of the function pointer print(function_ptr.name) # > myFuncPointer # Print the type of the declaration print(function_ptr.decl_type) # > void (*)( int,double ) # Print the real type of the declaration (it's just a pointer) print(type(function_ptr.decl_type)) # > <class 'pygccxml.declarations.cpptypes.pointer_t'> # Check if this is a function pointer print(declarations.is_calldef_pointer(function_ptr.decl_type)) # > True # Remove the pointer part, to access the function's type f_type = declarations.remove_pointer(function_ptr.decl_type) # Print the type print(type(f_type)) # > <class 'pygccxml.declarations.cpptypes.free_function_type_t'> # Print the return type and the arguments of the function print(f_type.return_type) # > void # Print the return type and the arguments print(str(f_type.arguments_types[0]), str(f_type.arguments_types[1]))
function_ptr = global_namespace.variables()[0] # Print the name of the function pointer print(function_ptr.name) # > myFuncPointer # Print the type of the declaration print(function_ptr.decl_type) # > void (*)( int,double ) # Print the real type of the declaration (it's just a pointer) print(type(function_ptr.decl_type)) # > <class 'pygccxml.declarations.cpptypes.pointer_t'> # Check if this is a function pointer print(declarations.is_calldef_pointer(function_ptr.decl_type)) # > True # Remove the pointer part, to access the function's type f_type = declarations.remove_pointer(function_ptr.decl_type) # Print the type print(type(f_type)) # > <class 'pygccxml.declarations.cpptypes.free_function_type_t'> # Print the return type and the arguments of the function print(f_type.return_type) # > void # Print the return type and the arguments print(str(f_type.arguments_types[0]), str(f_type.arguments_types[1]))
