def getArgs(func_el):
#
# Returns a list with one dict per argument.
# Each dict contains the following keywords:
#
# 'name', 'type', 'kw', 'id', 'native', 'fundamental', 'enumeration', 'loaded_class',
# 'known_class', 'type_namespaces', 'default', 'function_pointer'
#
args = []
argc = 1
for sub_el in func_el.getchildren():
if sub_el.tag == 'Argument':
arg_dict = OrderedDict()
if 'name' in sub_el.keys():
arg_dict['name'] = sub_el.get('name')
else:
arg_dict['name'] = 'arg_' + str(argc)
argc += 1
arg_type_dict = utils.findType(sub_el)
pointerness = arg_type_dict['pointerness']
is_ref = arg_type_dict['is_reference']
arg_kw = arg_type_dict['cv_qualifiers']
arg_id = arg_type_dict['id']
arg_type_el = arg_type_dict['el']
is_func_ptr = arg_type_dict['is_function_pointer']
arg_type = arg_type_dict['name'] + '*'*pointerness + '&'*is_ref
arg_dict['type'] = arg_type
arg_dict['kw'] = arg_kw
arg_dict['id'] = arg_id
arg_dict['function_pointer'] = is_func_ptr
arg_dict['native'] = utils.isNative(arg_type_el)
arg_dict['fundamental'] = utils.isFundamental(arg_type_el)
arg_dict['enumeration'] = utils.isEnumeration(arg_type_el)
arg_dict['loaded_class'] = utils.isLoadedClass(arg_type_el)
arg_dict['known_class'] = utils.isKnownClass(arg_type_el)
arg_dict['type_namespaces'] = utils.getNamespaces(arg_type_el)
if 'default' in sub_el.keys():
arg_dict['default'] = True
else:
arg_dict['default'] = False
args.append(arg_dict)
return args
def usesLoadedType(func_el):
uses_loaded_type = False
return_type_dict = utils.findType(func_el)
return_is_loaded = utils.isLoadedClass( return_type_dict['el'] )
args = getArgs(func_el)
is_arg_loaded = [arg_dict['loaded_class'] for arg_dict in args]
if (return_is_loaded) or (True in is_arg_loaded):
uses_loaded_type = True
return uses_loaded_type
def usesNativeType(func_el):
uses_native_type = False
return_type_dict = utils.findType(func_el)
return_is_native = utils.isNative( return_type_dict['el'] )
args = getArgs(func_el)
is_arg_native = [arg_dict['native'] for arg_dict in args]
if (return_is_native) or (True in is_arg_native):
uses_native_type = True
return uses_native_type
def getFunctionNameDict(func_el):
func_name = OrderedDict()
# Check that the 'name' XML entry exists.
xml_id = func_el.get('id')
if 'name' not in func_el.keys():
raise KeyError('XML element %s does not contain the key "name".' %
(xml_id))
# Get information about the return type.
return_type_dict = utils.findType(func_el)
return_el = return_type_dict['el']
pointerness = return_type_dict['pointerness']
is_ref = return_type_dict['is_reference']
return_kw = return_type_dict['cv_qualifiers']
return_kw_str = ' '.join(return_kw) + ' ' * bool(len(return_kw))
return_type = return_type_dict['name'] + '*' * pointerness + '&' * is_ref
# Get information about the arguments
args = getArgs(func_el)
#
# Start filling the name dict
#
func_name['short_templ'] = func_el.get('name')
namespaces_list = utils.getNamespaces(func_el, include_self=True)
func_name['long_templ'] = '::'.join(namespaces_list)
func_name['short'], template_bracket = utils.removeTemplateBracket(
func_name['short_templ'], return_bracket=True)
func_name['long'], template_bracket = utils.removeTemplateBracket(
func_name['long_templ'], return_bracket=True)
# Construct argument bracket
args_bracket = constrArgsBracket(args,
include_arg_name=False,
include_arg_type=True,
include_namespace=True)
func_name['long_templ_args'] = func_name['long_templ'] + args_bracket
# Add return type
func_name['long_templ_return_args'] = return_type + ' ' + func_name[
'long_templ_args']
return func_name
def constrExternFuncDecl(func_el):
extern_decl = ''
return_type_dict = utils.findType( gb.id_dict[func_el.get('returns')] )
return_type = return_type_dict['name'] + '*'*return_type_dict['pointerness'] + '&'*return_type_dict['is_reference']
func_name = getFunctionNameDict(func_el)
namespaces = utils.getNamespaces(func_el)
n_indents = len(namespaces)
extern_decl += utils.constrNamespace(namespaces, 'open')
extern_decl += ' '*cfg.indent*n_indents + 'extern ' + return_type + ' ' + func_name['short_templ_args'] + ';\n'
extern_decl += utils.constrNamespace(namespaces, 'close')
return extern_decl
def generateFunctionWrapperClassVersion(func_el, wr_func_name, namespaces,
n_overloads):
new_code = ''
# Check if this function makes use of any loaded types
uses_loaded_type = funcutils.usesLoadedType(func_el)
# Function name
func_name = func_el.get('name')
# Determine return type
return_type_dict = utils.findType(func_el)
return_el = return_type_dict['el']
pointerness = return_type_dict['pointerness']
is_ref = return_type_dict['is_reference']
return_type_kw = return_type_dict['cv_qualifiers']
return_kw_str = ' '.join(return_type_kw) + ' ' * bool(len(return_type_kw))
return_is_loaded = utils.isLoadedClass(return_el)
return_type = return_type_dict['name'] + '*' * pointerness + '&' * is_ref
# If return type is a known class, add '::' for absolute namespace.
if (not return_is_loaded) and utils.isKnownClass(return_el):
return_type = '::' + return_type
# If return-by-value, then a const qualifier on the return value is meaningless
# (will result in a compiler warning)
if (pointerness == 0) and (is_ref == False):
if 'const' in return_type_kw:
return_type_kw.remove('const')
# Arguments
args = funcutils.getArgs(func_el)
# One function for each set of default arguments
n_overloads = funcutils.numberOfDefaultArgs(func_el)
for remove_n_args in range(n_overloads + 1):
# Check that the function is acceptable
if funcutils.ignoreFunction(func_el,
limit_pointerness=True,
remove_n_args=remove_n_args):
continue
if remove_n_args == 0:
use_args = args
else:
use_args = args[:-remove_n_args]
# Argument bracket
args_bracket = funcutils.constrArgsBracket(use_args,
include_arg_name=True,
include_arg_type=True,
include_namespace=True,
use_wrapper_class=True)
# Name of original function to call
call_func_name = func_name
# Convert return type if loaded class
if utils.isLoadedClass(return_el):
wrapper_return_type = classutils.toWrapperType(
return_type, remove_reference=True)
else:
wrapper_return_type = return_type
# Write declaration line
new_code += return_kw_str + wrapper_return_type + ' ' + wr_func_name + args_bracket + '\n'
# Write function body
indent = ' ' * cfg.indent
new_code += '{\n'
if return_type == 'void':
new_code += indent
else:
new_code += indent + 'return '
# args_bracket_notypes = funcutils.constrArgsBracket(use_args, include_arg_name=True, include_arg_type=False, wrapper_to_pointer=True)
args_bracket_notypes = funcutils.constrArgsBracket(
use_args,
include_arg_name=True,
include_arg_type=False,
cast_to_original=True,
wrapper_to_pointer=True)
if return_is_loaded:
abs_return_type_simple = classutils.toAbstractType(
return_type,
include_namespace=True,
remove_reference=True,
remove_pointers=True)
wrapper_return_type_simple = wrapper_return_type.replace(
'*', '').replace('&', '')
if is_ref: # Return-by-reference
new_code += 'reference_returner< ' + wrapper_return_type_simple + ', ' + abs_return_type_simple + ' >( ' + call_func_name + args_bracket_notypes + ' );\n'
elif (not is_ref) and (pointerness > 0): # Return-by-pointer
new_code += 'pointer_returner< ' + wrapper_return_type_simple + ', ' + abs_return_type_simple + ' >( ' + call_func_name + args_bracket_notypes + ' );\n'
else: # Return-by-value
new_code += wrapper_return_type + '( ' + call_func_name + args_bracket_notypes + ' );\n'
else:
new_code += call_func_name + args_bracket_notypes + ';\n'
new_code += '}\n'
new_code += '\n'
# Add 'extern "C" {...}' block
new_code = 'extern "C"\n{\n' + new_code + '}\n'
return new_code
def ignoreFunction(func_el, limit_pointerness=False, remove_n_args=0, print_warning=True):
# TODO: When BOSS starts accepting template functions, add a check for the template arguments
import modules.classutils as classutils
func_name = getFunctionNameDict(func_el)
# Should this function be ditched?
if func_name['long_templ_args'] in cfg.ditch:
return True
# Ignore templated functions (BOSS cannot deal with that yet...)
if utils.isTemplateFunction(func_el):
if print_warning:
reason = "Templated function. BOSS cannot deal with this yet."
infomsg.IgnoredFunction(func_name['long_templ_args'], reason).printMessage()
return True
# Check if this is an operator function
is_operator = False
if func_el.tag == 'OperatorMethod':
is_operator = True
# Check function return type
if 'returns' in func_el.keys():
return_type_dict = utils.findType(func_el)
return_type = return_type_dict['name'] + '*'*return_type_dict['pointerness'] + '&'*return_type_dict['is_reference']
return_el = return_type_dict['el']
if not utils.isAcceptedType(return_el):
if print_warning:
reason = "Non-accepted return type '%s'." % return_type
infomsg.IgnoredFunction(is_operator*'operator'+func_name['long_templ_args'], reason).printMessage()
return True
# Check argument types
arg_types_accepted = True
args = getArgs(func_el)
use_n_args = len(args) - remove_n_args
if remove_n_args > 0:
args = args[:-remove_n_args]
for arg_dict in args:
arg_type_name = arg_dict['type']
arg_el = gb.id_dict[arg_dict['id']]
# Find out if argument type is base type of any accepted type
is_parent_of_accepted= False
if utils.isNative(arg_el):
arg_class_name = classutils.getClassNameDict(arg_el)
if arg_class_name['long_templ'] in gb.parents_of_loaded_classes:
is_parent_of_accepted = True
if arg_dict['function_pointer']:
if print_warning:
reason = "Function pointer type argument, '%s'." % arg_dict['name']
infomsg.IgnoredFunction(is_operator*'operator'+func_name['long_templ_args'], reason).printMessage()
arg_types_accepted = False
break
if (not utils.isAcceptedType(arg_el)): # and (not is_parent_of_accepted):
if print_warning:
reason = "Non-accepted argument type '%s'." % arg_type_name
infomsg.IgnoredFunction(is_operator*'operator'+func_name['long_templ_args'], reason).printMessage()
arg_types_accepted = False
break
if limit_pointerness == True:
if utils.isLoadedClass(arg_el):
if ('**' in arg_type_name) or ('*&' in arg_type_name):
if print_warning:
reason = "Argument of type pointer-to-pointer/reference-to-pointer to loaded class, '%s'." % arg_type_name
infomsg.IgnoredFunction(is_operator*'operator'+func_name['long_templ_args'], reason).printMessage()
arg_types_accepted = False
break
if (not arg_types_accepted):
return True
# Function accepted (i.e. should *not* be ignored)
return False
def createFrontendHeader(function_xml_files_dict):
# Read all xml files
utils.xmlFilesToDicts(function_xml_files_dict.values())
#
# Generate typedefs for loaded classes, from ::BACKENDNAME_SAFE_VERSION::class_name
# to ::Gambit::Backends::BACKENDNAME_SAFE_VERSION::class_name
#
outer_namespace_list = ['Gambit', 'Backends', gb.gambit_backend_name_full]
typedef_code = ''
typedef_code += utils.constrNamespace(outer_namespace_list,
'open',
indent=cfg.indent)
# Loop over all classes
for class_name in gb.classes_done:
if not class_name['long'] in gb.factory_info.keys():
continue
else:
class_typedef_code = ''
class_namespace, class_name_short = utils.removeNamespace(
class_name['long'], return_namespace=True)
if class_namespace == '':
class_typedef_code += 'typedef ::' + gb.gambit_backend_name_full + '::' + class_name[
'long'] + ' ' + class_name['short'] + ';\n'
else:
class_namespace_list = class_namespace.split('::')
class_typedef_code += utils.constrNamespace(
class_namespace_list, 'open', indent=cfg.indent)
class_typedef_code += ' ' * cfg.indent * len(
class_namespace_list
) + 'typedef ::' + gb.gambit_backend_name_full + '::' + class_name[
'long'] + ' ' + class_name['short'] + ';\n'
class_typedef_code += utils.constrNamespace(
class_namespace_list, 'close', indent=cfg.indent)
class_typedef_code = utils.addIndentation(class_typedef_code,
3 * cfg.indent)
typedef_code += class_typedef_code
typedef_code += utils.constrNamespace(outer_namespace_list,
'close',
indent=cfg.indent)
#
# Generate code for all the BE_FUNCTION macros
#
be_function_macro_code = ''
for i, func_name in enumerate(gb.functions_done):
# Set useful variables
xml_file = function_xml_files_dict[func_name['long_templ_args']]
# If new xml file, initialise global dicts
if xml_file != gb.xml_file_name:
gb.xml_file_name = xml_file
utils.initGlobalXMLdicts(xml_file, id_and_name_only=True)
# Get wrapper function element
tree = ET.parse(xml_file)
root = tree.getroot()
wr_func_el = None
for el in root.findall('Function'):
if el.get('name') == gb.wr_func_names[i]:
wr_func_el = el
if wr_func_el is None:
continue
# Get information about the return type.
return_type_dict = utils.findType(wr_func_el)
return_el = return_type_dict['el']
pointerness = return_type_dict['pointerness']
is_ref = return_type_dict['is_reference']
return_kw = return_type_dict['cv_qualifiers']
return_kw_str = ' '.join(return_kw) + ' ' * bool(len(return_kw))
return_type = return_type_dict[
'name'] + '*' * pointerness + '&' * is_ref
# Construct argument bracket
args = funcutils.getArgs(wr_func_el)
args_bracket = funcutils.constrArgsBracket(args,
include_arg_name=False,
include_arg_type=True,
include_namespace=True)
# Get mangled symbol
# symbol = wr_func_el.get('mangled')
symbol = wr_func_el.get('name')
be_function_macro_code += 'BE_FUNCTION('
be_function_macro_code += func_name['short'] + ', '
be_function_macro_code += return_type + ', '
be_function_macro_code += args_bracket + ', '
be_function_macro_code += '"' + symbol + '"' + ', '
be_function_macro_code += '"' + func_name['short'] + '"' + ')\n'
#
# Generate code for the frontend header
#
frontend_content = ''
# - Comment at beginning
backend_name_and_version = cfg.gambit_backend_name + ' ' + cfg.gambit_backend_version
frontend_content += '//\n'
frontend_content += '// Frontend header generated by BOSS for GAMBIT backend %s.\n' % (
backend_name_and_version)
frontend_content += '//\n'
# - Include statement for the identification header
frontend_content += '\n'
frontend_content += '#include "' + os.path.join(
gb.gambit_backend_incl_dir, gb.backend_types_basedir,
gb.gambit_backend_name_full, 'identification.hpp') + '"\n'
# - LOAD_LIBRARY macro
frontend_content += '\n'
frontend_content += 'LOAD_LIBRARY\n'
# - Class typedefs
frontend_content += '\n'
frontend_content += typedef_code
# - BE_FUNCTION macros
frontend_content += '\n'
frontend_content += '// Functions\n'
frontend_content += be_function_macro_code
# - Descriptions of different things that can go into a frontend header
frontend_content += '// Variables\n'
frontend_content += '\n'
frontend_content += '// Initialisation function (dependencies)\n'
frontend_content += '\n'
frontend_content += '// Convenience functions (registration)\n'
frontend_content += '\n'
frontend_content += '// Initialisation function (definition)\n'
frontend_content += 'BE_INI_FUNCTION{} END_BE_INI_FUNCTION\n'
frontend_content += '\n'
frontend_content += '// Convenience functions (definitions)\n'
# - Include statement for backend_undefs.hpp
frontend_content += '\n'
frontend_content += '// End\n'
frontend_content += '#include "' + os.path.join(
gb.gambit_backend_incl_dir, 'backend_undefs.hpp') + '"\n'
# Write to file
f = open(gb.frontend_path, 'w')
f.write(frontend_content)
f.close()