def buildDictionaryUnpacking(provider, node, source_ref): helper_args = buildDictionaryUnpackingArgs(provider, node.keys, node.values, source_ref) result = ExpressionFunctionCall( function = ExpressionFunctionCreation( function_ref = ExpressionFunctionRef( function_body = getDictUnpackingHelper(), source_ref = source_ref ), code_object = None, defaults = (), kw_defaults = None, annotations = None, source_ref = source_ref ), values = ( ExpressionMakeTuple( helper_args, source_ref ), ), source_ref = source_ref, ) result.setCompatibleSourceReference(helper_args[-1].getCompatibleSourceReference()) return result
def _buildSetUnpacking(provider, elements, source_ref): helper_args = [] for element in elements: # We could be a lot cleverer about the tuples for non-starred # arguments, but lets get this to work first. And then rely on # future optimization to inline the list unpacking helper in a # way that has the same effect. if getKind(element) == "Starred": helper_args.append(buildNode(provider, element.value, source_ref)) else: helper_args.append( ExpressionMakeTuple( elements=(buildNode(provider, element, source_ref), ), source_ref=source_ref, )) result = ExpressionFunctionCall( function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef( function_body=getSetUnpackingHelper(), source_ref=source_ref), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref, ), values=(ExpressionMakeTuple(helper_args, source_ref), ), source_ref=source_ref, ) result.setCompatibleSourceReference( helper_args[-1].getCompatibleSourceReference()) return result
def _buildSetUnpacking(provider, elements, source_ref): helper_args = [] for element in elements: # TODO: We could be a lot cleverer about the tuples for non-starred # arguments, but lets get this to work first. if getKind(element) == "Starred": helper_args.append(buildNode(provider, element.value, source_ref)) else: helper_args.append( ExpressionMakeTuple(elements=(buildNode(provider, element, source_ref),), source_ref=source_ref) ) result = ExpressionFunctionCall( function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef(function_body=getSetUnpackingHelper(), source_ref=source_ref), code_object=None, defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref, ), values=(ExpressionMakeTuple(helper_args, source_ref),), source_ref=source_ref, ) result.setCompatibleSourceReference(helper_args[-1].getCompatibleSourceReference()) return result
def buildDictionaryUnpacking(provider, node, source_ref): helper_args = [] for key, value in zip(node.keys, node.values): # TODO: We could be a lot cleverer about the dictionaries for non-starred # arguments, but lets get this to work first. if key is None: helper_args.append(buildNode(provider, value, source_ref), ) else: helper_args.append( ExpressionMakeDict( pairs=(ExpressionKeyValuePair( key=buildNode(provider, key, source_ref), value=buildNode(provider, value, source_ref), source_ref=source_ref), ), source_ref=source_ref, lazy_order=False, )) result = ExpressionFunctionCall( function=ExpressionFunctionCreation(function_ref=ExpressionFunctionRef( function_body=getDictUnpackingHelper(), source_ref=source_ref), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=(ExpressionMakeTuple(helper_args, source_ref), ), source_ref=source_ref, ) result.setCompatibleSourceReference( helper_args[-1].getCompatibleSourceReference()) return result
def buildDictionaryUnpacking(provider, node, source_ref): helper_args = [] for key, value in zip(node.keys, node.values): # TODO: We could be a lot cleverer about the dictionaries for non-starred # arguments, but lets get this to work first. if key is None: helper_args.append( buildNode(provider, value, source_ref), ) else: helper_args.append( ExpressionMakeDict( pairs = ( ExpressionKeyValuePair( key = buildNode(provider, key, source_ref), value = buildNode(provider, value, source_ref), source_ref = source_ref ), ), source_ref = source_ref, lazy_order = False, ) ) result = ExpressionFunctionCall( function = ExpressionFunctionCreation( function_ref = ExpressionFunctionRef( function_body = getDictUnpackingHelper(), source_ref = source_ref ), defaults = (), kw_defaults = None, annotations = None, source_ref = source_ref ), values = ( ExpressionMakeTuple( helper_args, source_ref ), ), source_ref = source_ref, ) result.setCompatibleSourceReference(helper_args[-1].getCompatibleSourceReference()) return result
def _buildSetUnpacking(provider, elements, source_ref): helper_args = [] for element in elements: # TODO: We could be a lot cleverer about the tuples for non-starred # arguments, but lets get this to work first. if getKind(element) == "Starred": helper_args.append( buildNode(provider, element.value, source_ref), ) else: helper_args.append( ExpressionMakeTuple( elements = ( buildNode(provider, element, source_ref), ), source_ref = source_ref ) ) result = ExpressionFunctionCall( function = ExpressionFunctionCreation( function_ref = ExpressionFunctionRef( function_body = getSetUnpackingHelper(), source_ref = source_ref ), code_object = None, defaults = (), kw_defaults = None, annotations = None, source_ref = source_ref ), values = ( ExpressionMakeTuple( helper_args, source_ref ), ), source_ref = source_ref, ) result.setCompatibleSourceReference(helper_args[-1].getCompatibleSourceReference()) return result
def buildListUnpacking(provider, elements, source_ref): helper_args = [] for element in elements: # We could be a lot cleverer about the tuples for non-starred # arguments, but lets get this to work first. And then rely on # future optimization to inline the list unpacking helper in a # way that has the same effect. if getKind(element) == "Starred": helper_args.append(buildNode(provider, element.value, source_ref)) else: helper_args.append( ExpressionMakeTuple( elements=(buildNode(provider, element, source_ref),), source_ref=source_ref, ) ) result = ExpressionFunctionCall( function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef( function_body=getListUnpackingHelper(), source_ref=source_ref ), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref, ), values=(ExpressionMakeTuple(helper_args, source_ref),), source_ref=source_ref, ) result.setCompatibleSourceReference(helper_args[-1].getCompatibleSourceReference()) return result
def _makeCallNode(called, positional_args, keys, values, list_star_arg, dict_star_arg, source_ref): # Many variables, but only to cover the many complex call cases. # pylint: disable=R0914 if list_star_arg is None and dict_star_arg is None: result = makeExpressionCall( called = called, args = makeSequenceCreationOrConstant( sequence_kind = "tuple", elements = positional_args, source_ref = source_ref ), kw = makeDictCreationOrConstant( keys = keys, values = values, lazy_order = True, source_ref = source_ref ), source_ref = source_ref, ) if values: result.setCompatibleSourceReference( source_ref = values[-1].getCompatibleSourceReference() ) elif positional_args: result.setCompatibleSourceReference( source_ref = positional_args[-1].getCompatibleSourceReference() ) return result else: # Dispatch to complex helper function for each case. These do # re-formulation of complex calls according to developer manual. key = ( len(positional_args) > 0, len(keys) > 0, list_star_arg is not None, dict_star_arg is not None ) from .ComplexCallHelperFunctions import ( getFunctionCallHelperPosKeywordsStarList, getFunctionCallHelperPosStarList, getFunctionCallHelperKeywordsStarList, getFunctionCallHelperStarList, getFunctionCallHelperPosKeywordsStarDict, getFunctionCallHelperPosStarDict, getFunctionCallHelperKeywordsStarDict, getFunctionCallHelperStarDict, getFunctionCallHelperPosKeywordsStarListStarDict, getFunctionCallHelperPosStarListStarDict, getFunctionCallHelperKeywordsStarListStarDict, getFunctionCallHelperStarListStarDict, ) table = { (True, True, True, False) : getFunctionCallHelperPosKeywordsStarList, (True, False, True, False) : getFunctionCallHelperPosStarList, (False, True, True, False) : getFunctionCallHelperKeywordsStarList, (False, False, True, False) : getFunctionCallHelperStarList, (True, True, False, True) : getFunctionCallHelperPosKeywordsStarDict, (True, False, False, True) : getFunctionCallHelperPosStarDict, (False, True, False, True) : getFunctionCallHelperKeywordsStarDict, (False, False, False, True) : getFunctionCallHelperStarDict, (True, True, True, True) : getFunctionCallHelperPosKeywordsStarListStarDict, (True, False, True, True) : getFunctionCallHelperPosStarListStarDict, (False, True, True, True) : getFunctionCallHelperKeywordsStarListStarDict, (False, False, True, True) : getFunctionCallHelperStarListStarDict, } get_helper = table[ key ] helper_args = [called] if positional_args: helper_args.append( makeSequenceCreationOrConstant( sequence_kind = "tuple", elements = positional_args, source_ref = source_ref ) ) if python_version >= 350 and list_star_arg is not None: helper_args.append(list_star_arg) if keys: helper_args.append( makeDictCreationOrConstant( keys = keys, values = values, lazy_order = True, source_ref = source_ref ) ) if python_version < 350 and list_star_arg is not None: helper_args.append(list_star_arg) if dict_star_arg is not None: helper_args.append(dict_star_arg) result = ExpressionFunctionCall( function = ExpressionFunctionCreation( function_ref = ExpressionFunctionRef( function_body = get_helper(), source_ref = source_ref ), defaults = (), kw_defaults = None, annotations = None, source_ref = source_ref ), values = helper_args, source_ref = source_ref, ) result.setCompatibleSourceReference( source_ref = helper_args[-1].getCompatibleSourceReference() ) return result
def buildClassNode3(provider, node, source_ref): # Many variables, due to the huge re-formulation that is going on here, # which just has the complexity and optimization checks: # pylint: disable=I0021,too-many-branches,too-many-locals,too-many-statements # This function is the Python3 special case with special re-formulation as # according to developer manual. class_statement_nodes, class_doc = extractDocFromBody(node) # We need a scope for the temporary variables, and they might be closured. temp_scope = provider.allocateTempScope(name="class_creation") tmp_class_decl_dict = provider.allocateTempVariable(temp_scope=temp_scope, name="class_decl_dict") tmp_metaclass = provider.allocateTempVariable(temp_scope=temp_scope, name="metaclass") tmp_prepared = provider.allocateTempVariable(temp_scope=temp_scope, name="prepared") class_creation_function = ExpressionClassBody(provider=provider, name=node.name, doc=class_doc, source_ref=source_ref) class_locals_scope = class_creation_function.getLocalsScope() # Only local variable, for provision to methods. class_variable = class_locals_scope.getLocalVariable( owner=class_creation_function, variable_name="__class__") class_locals_scope.registerProvidedVariable(class_variable) class_variable_ref = ExpressionVariableRef(variable=class_variable, source_ref=source_ref) parent_module = provider.getParentModule() code_object = CodeObjectSpec( co_name=node.name, co_kind="Class", co_varnames=(), co_freevars=(), co_argcount=0, co_posonlyargcount=0, co_kwonlyargcount=0, co_has_starlist=False, co_has_stardict=False, co_filename=parent_module.getRunTimeFilename(), co_lineno=source_ref.getLineNumber(), future_spec=parent_module.getFutureSpec(), ) body = buildFrameNode( provider=class_creation_function, nodes=class_statement_nodes, code_object=code_object, source_ref=source_ref, ) source_ref_orig = source_ref if body is not None: # The frame guard has nothing to tell its line number to. body.source_ref = source_ref locals_scope = class_creation_function.getLocalsScope() statements = [ StatementSetLocals( locals_scope=locals_scope, new_locals=ExpressionTempVariableRef(variable=tmp_prepared, source_ref=source_ref), source_ref=source_ref, ), StatementAssignmentVariableName( provider=class_creation_function, variable_name="__module__", source=ExpressionModuleAttributeNameRef( variable=provider.getParentModule().getVariableForReference( "__name__"), source_ref=source_ref, ), source_ref=source_ref, ), ] if class_doc is not None: statements.append( StatementAssignmentVariableName( provider=class_creation_function, variable_name="__doc__", source=makeConstantRefNode(constant=class_doc, source_ref=source_ref, user_provided=True), source_ref=source_ref, )) # The "__qualname__" attribute is new in Python3. qualname = class_creation_function.getFunctionQualname() if python_version < 0x340: qualname_ref = makeConstantRefNode(constant=qualname, source_ref=source_ref, user_provided=True) else: qualname_ref = ExpressionFunctionQualnameRef( function_body=class_creation_function, source_ref=source_ref) statements.append( StatementLocalsDictOperationSet( locals_scope=locals_scope, variable_name="__qualname__", value=qualname_ref, source_ref=source_ref, )) if python_version >= 0x340: qualname_assign = statements[-1] if python_version >= 0x360 and class_creation_function.needsAnnotationsDictionary( ): statements.append( StatementLocalsDictOperationSet( locals_scope=locals_scope, variable_name="__annotations__", value=makeConstantRefNode(constant={}, source_ref=source_ref, user_provided=True), source_ref=source_ref, )) statements.append(body) if node.bases: tmp_bases = provider.allocateTempVariable(temp_scope=temp_scope, name="bases") if python_version >= 0x370: tmp_bases_orig = provider.allocateTempVariable( temp_scope=temp_scope, name="bases_orig") def makeBasesRef(): return ExpressionTempVariableRef(variable=tmp_bases, source_ref=source_ref) else: def makeBasesRef(): return makeConstantRefNode(constant=(), source_ref=source_ref) if python_version >= 0x370 and node.bases: statements.append( makeStatementConditional( condition=makeComparisonExpression( comparator="NotEq", left=ExpressionTempVariableRef(variable=tmp_bases, source_ref=source_ref), right=ExpressionTempVariableRef(variable=tmp_bases_orig, source_ref=source_ref), source_ref=source_ref, ), yes_branch=StatementLocalsDictOperationSet( locals_scope=locals_scope, variable_name="__orig_bases__", value=ExpressionTempVariableRef(variable=tmp_bases_orig, source_ref=source_ref), source_ref=source_ref, ), no_branch=None, source_ref=source_ref, )) statements += ( StatementAssignmentVariable( variable=class_variable, source=makeExpressionCall( called=ExpressionTempVariableRef(variable=tmp_metaclass, source_ref=source_ref), args=makeExpressionMakeTuple( elements=( makeConstantRefNode( constant=node.name, source_ref=source_ref, user_provided=True, ), makeBasesRef(), ExpressionBuiltinLocalsRef(locals_scope=locals_scope, source_ref=source_ref), ), source_ref=source_ref, ), kw=ExpressionTempVariableRef(variable=tmp_class_decl_dict, source_ref=source_ref), source_ref=source_ref, ), source_ref=source_ref, ), StatementReturn(expression=class_variable_ref, source_ref=source_ref), ) body = makeStatementsSequenceFromStatement( statement=makeTryFinallyStatement( provider=class_creation_function, tried=mergeStatements(statements, True), final=StatementReleaseLocals(locals_scope=locals_scope, source_ref=source_ref), source_ref=source_ref, )) # The class body is basically a function that implicitly, at the end # returns its locals and cannot have other return statements contained. class_creation_function.setChild("body", body) # The class body is basically a function that implicitly, at the end # returns its created class and cannot have other return statements # contained. decorated_body = class_creation_function for decorator in buildNodeList(provider, reversed(node.decorator_list), source_ref): decorated_body = makeExpressionCall( called=decorator, args=makeExpressionMakeTuple(elements=(decorated_body, ), source_ref=source_ref), kw=None, source_ref=decorator.getSourceReference(), ) if node.keywords and node.keywords[-1].arg is None: keywords = node.keywords[:-1] else: keywords = node.keywords statements = [] if node.bases: statements.append( StatementAssignmentVariable( variable=tmp_bases if python_version < 0x370 else tmp_bases_orig, source=_buildBasesTupleCreationNode(provider=provider, elements=node.bases, source_ref=source_ref), source_ref=source_ref, )) if python_version >= 0x370: bases_conversion = ExpressionFunctionCall( function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef( function_body=getClassBasesMroConversionHelper(), source_ref=source_ref, ), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref, ), values=(ExpressionTempVariableRef(variable=tmp_bases_orig, source_ref=source_ref), ), source_ref=source_ref, ) statements.append( StatementAssignmentVariable(variable=tmp_bases, source=bases_conversion, source_ref=source_ref)) statements.append( StatementAssignmentVariable( variable=tmp_class_decl_dict, source=makeDictCreationOrConstant2( keys=[keyword.arg for keyword in keywords], values=[ buildNode(provider, keyword.value, source_ref) for keyword in keywords ], source_ref=source_ref, ), source_ref=source_ref, )) if node.keywords and node.keywords[-1].arg is None: statements.append( StatementDictOperationUpdate( dict_arg=ExpressionVariableRef(variable=tmp_class_decl_dict, source_ref=source_ref), value=buildNode(provider, node.keywords[-1].value, source_ref), source_ref=source_ref, )) # Check if there are bases, and if there are, go with the type of the # first base class as a metaclass unless it was specified in the class # decl dict of course. if node.bases: unspecified_metaclass_expression = ExpressionBuiltinType1( value=ExpressionSubscriptLookup( expression=ExpressionTempVariableRef(variable=tmp_bases, source_ref=source_ref), subscript=makeConstantRefNode(constant=0, source_ref=source_ref, user_provided=True), source_ref=source_ref, ), source_ref=source_ref, ) # Might become empty behind our back during conversion, therefore make the # check at run time for 3.7 or higher. if python_version >= 0x370: unspecified_metaclass_expression = ExpressionConditional( condition=ExpressionTempVariableRef(variable=tmp_bases, source_ref=source_ref), expression_yes=unspecified_metaclass_expression, expression_no=makeExpressionBuiltinTypeRef( builtin_name="type", source_ref=source_ref), source_ref=source_ref, ) else: unspecified_metaclass_expression = makeExpressionBuiltinTypeRef( builtin_name="type", source_ref=source_ref) call_prepare = StatementAssignmentVariable( variable=tmp_prepared, source=makeExpressionCall( called=ExpressionAttributeLookup( expression=ExpressionTempVariableRef(variable=tmp_metaclass, source_ref=source_ref), attribute_name="__prepare__", source_ref=source_ref, ), args=makeExpressionMakeTuple( elements=( makeConstantRefNode(constant=node.name, source_ref=source_ref, user_provided=True), makeBasesRef(), ), source_ref=source_ref, ), kw=ExpressionTempVariableRef(variable=tmp_class_decl_dict, source_ref=source_ref), source_ref=source_ref, ), source_ref=source_ref, ) if python_version >= 0x364: call_prepare = makeStatementsSequenceFromStatements( call_prepare, makeStatementConditional( condition=ExpressionAttributeCheck( expression=ExpressionTempVariableRef( variable=tmp_prepared, source_ref=source_ref), attribute_name="__getitem__", source_ref=source_ref, ), yes_branch=None, no_branch=makeRaiseExceptionExpressionFromTemplate( exception_type="TypeError", template="%s.__prepare__() must return a mapping, not %s", template_args=( ExpressionBuiltinGetattr( expression=ExpressionTempVariableRef( variable=tmp_metaclass, source_ref=source_ref), name=makeConstantRefNode(constant="__name__", source_ref=source_ref), default=makeConstantRefNode(constant="<metaclass>", source_ref=source_ref), source_ref=source_ref, ), ExpressionAttributeLookup( expression=ExpressionBuiltinType1( value=ExpressionTempVariableRef( variable=tmp_prepared, source_ref=source_ref), source_ref=source_ref, ), attribute_name="__name__", source_ref=source_ref, ), ), source_ref=source_ref, ).asStatement(), source_ref=source_ref, ), ) statements += ( StatementAssignmentVariable( variable=tmp_metaclass, source=ExpressionSelectMetaclass( metaclass=ExpressionConditional( condition=ExpressionDictOperationIn( key=makeConstantRefNode( constant="metaclass", source_ref=source_ref, user_provided=True, ), dict_arg=ExpressionTempVariableRef( variable=tmp_class_decl_dict, source_ref=source_ref), source_ref=source_ref, ), expression_yes=ExpressionDictOperationGet( dict_arg=ExpressionTempVariableRef( variable=tmp_class_decl_dict, source_ref=source_ref), key=makeConstantRefNode( constant="metaclass", source_ref=source_ref, user_provided=True, ), source_ref=source_ref, ), expression_no=unspecified_metaclass_expression, source_ref=source_ref, ), bases=makeBasesRef(), source_ref=source_ref, ), source_ref=source_ref_orig, ), makeStatementConditional( condition=ExpressionDictOperationIn( key=makeConstantRefNode(constant="metaclass", source_ref=source_ref, user_provided=True), dict_arg=ExpressionTempVariableRef( variable=tmp_class_decl_dict, source_ref=source_ref), source_ref=source_ref, ), no_branch=None, yes_branch=StatementDictOperationRemove( dict_arg=ExpressionTempVariableRef( variable=tmp_class_decl_dict, source_ref=source_ref), key=makeConstantRefNode(constant="metaclass", source_ref=source_ref, user_provided=True), source_ref=source_ref, ), source_ref=source_ref, ), makeStatementConditional( condition=ExpressionAttributeCheck( expression=ExpressionTempVariableRef(variable=tmp_metaclass, source_ref=source_ref), attribute_name="__prepare__", source_ref=source_ref, ), yes_branch=call_prepare, no_branch=StatementAssignmentVariable( variable=tmp_prepared, source=makeConstantRefNode(constant={}, source_ref=source_ref, user_provided=True), source_ref=source_ref, ), source_ref=source_ref, ), StatementAssignmentVariableName( provider=provider, variable_name=mangleName(node.name, provider), source=decorated_body, source_ref=source_ref, ), ) if python_version >= 0x340: class_creation_function.qualname_setup = node.name, qualname_assign final = [tmp_class_decl_dict, tmp_metaclass, tmp_prepared] if node.bases: final.insert(0, tmp_bases) if python_version >= 0x370: final.insert(0, tmp_bases_orig) return makeTryFinallyStatement( provider=provider, tried=statements, final=tuple( StatementReleaseVariable(variable=variable, source_ref=source_ref) for variable in final), source_ref=source_ref, )
def _makeCallNode(called, positional_args, keys, values, list_star_arg, dict_star_arg, source_ref): # Many variables, but only to cover the many complex call cases. # pylint: disable=R0914 if list_star_arg is None and dict_star_arg is None: result = ExpressionCall( called=called, args=makeSequenceCreationOrConstant(sequence_kind="tuple", elements=positional_args, source_ref=source_ref), kw=makeDictCreationOrConstant(keys=keys, values=values, lazy_order=True, source_ref=source_ref), source_ref=source_ref, ) if values: result.setCompatibleSourceReference( source_ref=values[-1].getCompatibleSourceReference()) elif positional_args: result.setCompatibleSourceReference( source_ref=positional_args[-1].getCompatibleSourceReference()) return result else: # Dispatch to complex helper function for each case. These do # re-formulation of complex calls according to developer manual. key = (len(positional_args) > 0, len(keys) > 0, list_star_arg is not None, dict_star_arg is not None) from .ComplexCallHelperFunctions import ( getFunctionCallHelperPosKeywordsStarList, getFunctionCallHelperPosStarList, getFunctionCallHelperKeywordsStarList, getFunctionCallHelperStarList, getFunctionCallHelperPosKeywordsStarDict, getFunctionCallHelperPosStarDict, getFunctionCallHelperKeywordsStarDict, getFunctionCallHelperStarDict, getFunctionCallHelperPosKeywordsStarListStarDict, getFunctionCallHelperPosStarListStarDict, getFunctionCallHelperKeywordsStarListStarDict, getFunctionCallHelperStarListStarDict, ) table = { (True, True, True, False): getFunctionCallHelperPosKeywordsStarList, (True, False, True, False): getFunctionCallHelperPosStarList, (False, True, True, False): getFunctionCallHelperKeywordsStarList, (False, False, True, False): getFunctionCallHelperStarList, (True, True, False, True): getFunctionCallHelperPosKeywordsStarDict, (True, False, False, True): getFunctionCallHelperPosStarDict, (False, True, False, True): getFunctionCallHelperKeywordsStarDict, (False, False, False, True): getFunctionCallHelperStarDict, (True, True, True, True): getFunctionCallHelperPosKeywordsStarListStarDict, (True, False, True, True): getFunctionCallHelperPosStarListStarDict, (False, True, True, True): getFunctionCallHelperKeywordsStarListStarDict, (False, False, True, True): getFunctionCallHelperStarListStarDict, } get_helper = table[key] helper_args = [called] if positional_args: helper_args.append( makeSequenceCreationOrConstant(sequence_kind="tuple", elements=positional_args, source_ref=source_ref)) if keys: helper_args.append( makeDictCreationOrConstant(keys=keys, values=values, lazy_order=True, source_ref=source_ref)) if list_star_arg is not None: helper_args.append(list_star_arg) if dict_star_arg is not None: helper_args.append(dict_star_arg) result = ExpressionFunctionCall( function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef(function_body=get_helper(), source_ref=source_ref), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=helper_args, source_ref=source_ref, ) result.setCompatibleSourceReference( source_ref=helper_args[-1].getCompatibleSourceReference()) return result
def _buildClassNode2(provider, node, source_ref): # This function is the Python2 special case with special re-formulation as # according to developer manual, and it's very detailed, pylint: disable=R0914 class_statement_nodes, class_doc = extractDocFromBody(node) function_body = ExpressionClassBody(provider=provider, name=node.name, doc=class_doc, flags=set(), source_ref=source_ref) code_object = CodeObjectSpec(co_name=node.name, co_kind="Class", co_varnames=(), co_argcount=0, co_kwonlyargcount=0, co_has_starlist=False, co_has_stardict=False) body = buildFrameNode(provider=function_body, nodes=class_statement_nodes, code_object=code_object, source_ref=source_ref) if body is not None: # The frame guard has nothing to tell its line number to. body.source_ref = source_ref.atInternal() # The class body is basically a function that implicitly, at the end # returns its locals and cannot have other return statements contained, and # starts out with a variables "__module__" and potentially "__doc__" set. statements = [ StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__module__", source_ref=source_ref), source=makeConstantRefNode( constant=provider.getParentModule().getFullName(), source_ref=source_ref, user_provided=True), source_ref=source_ref.atInternal()) ] if class_doc is not None: statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__doc__", source_ref=source_ref), source=makeConstantRefNode(constant=class_doc, source_ref=source_ref, user_provided=True), source_ref=source_ref.atInternal())) statements += [ body, StatementReturn( expression=ExpressionBuiltinLocals(source_ref=source_ref), source_ref=source_ref.atInternal()) ] body = makeStatementsSequence(statements=statements, allow_none=True, source_ref=source_ref) # The class body is basically a function that implicitly, at the end # returns its locals and cannot have other return statements contained. function_body.setBody(body) temp_scope = provider.allocateTempScope("class_creation") tmp_bases = provider.allocateTempVariable(temp_scope, "bases") tmp_class_dict = provider.allocateTempVariable(temp_scope, "class_dict") tmp_metaclass = provider.allocateTempVariable(temp_scope, "metaclass") tmp_class = provider.allocateTempVariable(temp_scope, "class") statements = [ StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_bases, source_ref=source_ref), source=makeSequenceCreationOrConstant(sequence_kind="tuple", elements=buildNodeList( provider, node.bases, source_ref), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_class_dict, source_ref=source_ref), source=ExpressionFunctionCall(function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef(function_body=function_body, source_ref=source_ref), code_object=None, defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=(), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_metaclass, source_ref=source_ref), source=ExpressionConditional( condition=ExpressionComparisonIn( left=makeConstantRefNode(constant="__metaclass__", source_ref=source_ref, user_provided=True), right=ExpressionTempVariableRef(variable=tmp_class_dict, source_ref=source_ref), source_ref=source_ref), expression_yes=ExpressionDictOperationGet( dict_arg=ExpressionTempVariableRef(variable=tmp_class_dict, source_ref=source_ref), key=makeConstantRefNode(constant="__metaclass__", source_ref=source_ref, user_provided=True), source_ref=source_ref), expression_no=ExpressionSelectMetaclass( metaclass=None, bases=ExpressionTempVariableRef(variable=tmp_bases, source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_class, source_ref=source_ref), source=ExpressionCallNoKeywords( called=ExpressionTempVariableRef(variable=tmp_metaclass, source_ref=source_ref), args=ExpressionMakeTuple( elements=(makeConstantRefNode(constant=node.name, source_ref=source_ref, user_provided=True), ExpressionTempVariableRef(variable=tmp_bases, source_ref=source_ref), ExpressionTempVariableRef( variable=tmp_class_dict, source_ref=source_ref)), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), ] for decorator in buildNodeList(provider, reversed(node.decorator_list), source_ref): statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_class, source_ref=source_ref), source=ExpressionCallNoKeywords( called=decorator, args=ExpressionMakeTuple( elements=(ExpressionTempVariableRef( variable=tmp_class, source_ref=source_ref), ), source_ref=source_ref), source_ref=decorator.getSourceReference()), source_ref=decorator.getSourceReference())) statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef(variable_name=node.name, source_ref=source_ref), source=ExpressionTempVariableRef(variable=tmp_class, source_ref=source_ref), source_ref=source_ref)) final = (StatementReleaseVariable(variable=tmp_class, source_ref=source_ref), StatementReleaseVariable(variable=tmp_bases, source_ref=source_ref), StatementReleaseVariable(variable=tmp_class_dict, source_ref=source_ref), StatementReleaseVariable(variable=tmp_metaclass, source_ref=source_ref)) return makeTryFinallyStatement(provider=function_body, tried=statements, final=final, source_ref=source_ref)
def _buildClassNode3(provider, node, source_ref): # Many variables, due to the huge re-formulation that is going on here, # which just has the complexity, pylint: disable=R0914,R0915 # This function is the Python3 special case with special re-formulation as # according to developer manual. class_statement_nodes, class_doc = extractDocFromBody(node) # We need a scope for the temporary variables, and they might be closured. temp_scope = provider.allocateTempScope(name="class_creation", allow_closure=True) tmp_bases = provider.allocateTempVariable(temp_scope=temp_scope, name="bases") tmp_class_decl_dict = provider.allocateTempVariable(temp_scope=temp_scope, name="class_decl_dict") tmp_metaclass = provider.allocateTempVariable(temp_scope=temp_scope, name="metaclass") tmp_prepared = provider.allocateTempVariable(temp_scope=temp_scope, name="prepared") class_creation_function = ExpressionClassBody(provider=provider, name=node.name, doc=class_doc, flags=set(), source_ref=source_ref) if python_version >= 340 and False: # TODO: Temporarily reverted: tmp_class = class_creation_function.allocateTempVariable( temp_scope=None, name="__class__") class_target_variable_ref = ExpressionTargetTempVariableRef( variable=tmp_class, source_ref=source_ref) class_variable_ref = ExpressionTempVariableRef(variable=tmp_class, source_ref=source_ref) else: class_variable = class_creation_function.getVariableForAssignment( "__class__") class_target_variable_ref = ExpressionTargetVariableRef( variable_name="__class__", variable=class_variable, source_ref=source_ref) class_variable_ref = ExpressionVariableRef(variable_name="__class__", variable=class_variable, source_ref=source_ref) code_object = CodeObjectSpec(co_name=node.name, co_kind="Class", co_varnames=(), co_argcount=0, co_kwonlyargcount=0, co_has_starlist=False, co_has_stardict=False) body = buildFrameNode(provider=class_creation_function, nodes=class_statement_nodes, code_object=code_object, source_ref=source_ref) source_ref_orig = source_ref if body is not None: # The frame guard has nothing to tell its line number to. body.source_ref = source_ref module_variable = class_creation_function.getVariableForAssignment( "__module__") statements = [ StatementSetLocals(new_locals=ExpressionTempVariableRef( variable=tmp_prepared, source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__module__", variable=module_variable, source_ref=source_ref), source=makeConstantRefNode( constant=provider.getParentModule().getFullName(), source_ref=source_ref, user_provided=True), source_ref=source_ref) ] if class_doc is not None: doc_variable = class_creation_function.getVariableForAssignment( "__doc__") statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__doc__", variable=doc_variable, source_ref=source_ref), source=makeConstantRefNode(constant=class_doc, source_ref=source_ref, user_provided=True), source_ref=source_ref)) # The "__qualname__" attribute is new in Python 3.3. if python_version >= 330: qualname = class_creation_function.getFunctionQualname() qualname_variable = class_creation_function.getVariableForAssignment( "__qualname__") if python_version < 340: qualname_ref = makeConstantRefNode(constant=qualname, source_ref=source_ref, user_provided=True) else: qualname_ref = ExpressionFunctionQualnameRef( function_body=class_creation_function, source_ref=source_ref, ) statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__qualname__", variable=qualname_variable, source_ref=source_ref), source=qualname_ref, source_ref=source_ref)) if python_version >= 340: qualname_assign = statements[-1] if python_version >= 360 and \ class_creation_function.needsAnnotationsDictionary(): annotations_variable = class_creation_function.getVariableForAssignment( "__annotations__") statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__annotations__", variable=annotations_variable, source_ref=source_ref), source=makeConstantRefNode(constant={}, source_ref=source_ref, user_provided=True), source_ref=source_ref)) statements.append(body) statements += [ StatementAssignmentVariable( variable_ref=class_target_variable_ref, source=ExpressionCall( called=ExpressionTempVariableRef(variable=tmp_metaclass, source_ref=source_ref), args=makeSequenceCreationOrConstant( sequence_kind="tuple", elements=(makeConstantRefNode(constant=node.name, source_ref=source_ref, user_provided=True), ExpressionTempVariableRef(variable=tmp_bases, source_ref=source_ref), ExpressionBuiltinLocals(source_ref=source_ref)), source_ref=source_ref), kw=ExpressionTempVariableRef(variable=tmp_class_decl_dict, source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), StatementReturn(expression=class_variable_ref, source_ref=source_ref) ] body = makeStatementsSequence(statements=statements, allow_none=True, source_ref=source_ref) # The class body is basically a function that implicitly, at the end # returns its locals and cannot have other return statements contained. class_creation_function.setBody(body) class_creation_function.registerProvidedVariable(tmp_bases) class_creation_function.registerProvidedVariable(tmp_class_decl_dict) class_creation_function.registerProvidedVariable(tmp_metaclass) class_creation_function.registerProvidedVariable(tmp_prepared) # The class body is basically a function that implicitly, at the end # returns its created class and cannot have other return statements # contained. decorated_body = ExpressionFunctionCall( function=ExpressionFunctionCreation(function_ref=ExpressionFunctionRef( function_body=class_creation_function, source_ref=source_ref), code_object=code_object, defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=(), source_ref=source_ref) for decorator in buildNodeList(provider, reversed(node.decorator_list), source_ref): decorated_body = ExpressionCallNoKeywords( called=decorator, args=ExpressionMakeTuple(elements=(decorated_body, ), source_ref=source_ref), source_ref=decorator.getSourceReference()) statements = ( StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_bases, source_ref=source_ref), source=makeSequenceCreationOrConstant(sequence_kind="tuple", elements=buildNodeList( provider, node.bases, source_ref), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_class_decl_dict, source_ref=source_ref), source=makeDictCreationOrConstant(keys=[ makeConstantRefNode(constant=keyword.arg, source_ref=source_ref, user_provided=True) for keyword in node.keywords ], values=[ buildNode( provider, keyword.value, source_ref) for keyword in node.keywords ], source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_metaclass, source_ref=source_ref), source=ExpressionSelectMetaclass(metaclass=ExpressionConditional( condition=ExpressionComparisonIn( left=makeConstantRefNode(constant="metaclass", source_ref=source_ref, user_provided=True), right=ExpressionTempVariableRef( variable=tmp_class_decl_dict, source_ref=source_ref), source_ref=source_ref), expression_yes=ExpressionDictOperationGet( dict_arg=ExpressionTempVariableRef( variable=tmp_class_decl_dict, source_ref=source_ref), key=makeConstantRefNode(constant="metaclass", source_ref=source_ref, user_provided=True), source_ref=source_ref), expression_no=ExpressionConditional( condition=ExpressionTempVariableRef(variable=tmp_bases, source_ref=source_ref), expression_no=ExpressionBuiltinRef(builtin_name="type", source_ref=source_ref), expression_yes=ExpressionBuiltinType1( value=ExpressionSubscriptLookup( subscribed=ExpressionTempVariableRef( variable=tmp_bases, source_ref=source_ref), subscript=makeConstantRefNode( constant=0, source_ref=source_ref, user_provided=True), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), bases=ExpressionTempVariableRef( variable=tmp_bases, source_ref=source_ref), source_ref=source_ref), source_ref=source_ref_orig), StatementConditional( condition=ExpressionComparisonIn( left=makeConstantRefNode(constant="metaclass", source_ref=source_ref, user_provided=True), right=ExpressionTempVariableRef(variable=tmp_class_decl_dict, source_ref=source_ref), source_ref=source_ref), no_branch=None, yes_branch=makeStatementsSequenceFromStatement( statement=StatementDictOperationRemove( dict_arg=ExpressionTempVariableRef( variable=tmp_class_decl_dict, source_ref=source_ref), key=makeConstantRefNode(constant="metaclass", source_ref=source_ref, user_provided=True), source_ref=source_ref)), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_prepared, source_ref=source_ref), source=ExpressionConditional( condition=ExpressionBuiltinHasattr( # pylint: disable=E1120,E1123 object=ExpressionTempVariableRef(variable=tmp_metaclass, source_ref=source_ref), name=makeConstantRefNode(constant="__prepare__", source_ref=source_ref, user_provided=True), source_ref=source_ref), expression_no=makeConstantRefNode(constant={}, source_ref=source_ref, user_provided=True), expression_yes=ExpressionCall( called=ExpressionAttributeLookup( source=ExpressionTempVariableRef( variable=tmp_metaclass, source_ref=source_ref), attribute_name="__prepare__", source_ref=source_ref), args=ExpressionMakeTuple( elements=(makeConstantRefNode(constant=node.name, source_ref=source_ref, user_provided=True), ExpressionTempVariableRef( variable=tmp_bases, source_ref=source_ref)), source_ref=source_ref), kw=ExpressionTempVariableRef(variable=tmp_class_decl_dict, source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable(variable_ref=ExpressionTargetVariableRef( variable_name=node.name, source_ref=source_ref), source=decorated_body, source_ref=source_ref), ) if python_version >= 340: class_assign = statements[-1] class_creation_function.qualname_setup = class_assign, qualname_assign final = (StatementReleaseVariable(variable=tmp_bases, source_ref=source_ref), StatementReleaseVariable(variable=tmp_class_decl_dict, source_ref=source_ref), StatementReleaseVariable(variable=tmp_metaclass, source_ref=source_ref), StatementReleaseVariable(variable=tmp_prepared, source_ref=source_ref)) return makeTryFinallyStatement(provider=provider, tried=statements, final=final, source_ref=source_ref)
def _makeCallNode(called, positional_args, keys, values, list_star_arg, dict_star_arg, source_ref): # Many variables, but only to cover the many complex call cases. if list_star_arg is None and dict_star_arg is None: result = makeExpressionCall( called=called, args=makeSequenceCreationOrConstant(sequence_kind="tuple", elements=positional_args, source_ref=source_ref), kw=makeDictCreationOrConstant(keys=keys, values=values, source_ref=source_ref), source_ref=source_ref, ) # Bug compatible line numbers before Python 3.8 if python_version < 380: if values: result.setCompatibleSourceReference( source_ref=values[-1].getCompatibleSourceReference()) elif positional_args: result.setCompatibleSourceReference( source_ref=positional_args[-1]. getCompatibleSourceReference()) return result else: # Dispatch to complex helper function for each case. These do # re-formulation of complex calls according to developer manual. key = ( bool(positional_args), bool(keys), list_star_arg is not None, dict_star_arg is not None, ) table = { (True, True, True, False): getFunctionCallHelperPosKeywordsStarList, (True, False, True, False): getFunctionCallHelperPosStarList, (False, True, True, False): getFunctionCallHelperKeywordsStarList, (False, False, True, False): getFunctionCallHelperStarList, (True, True, False, True): getFunctionCallHelperPosKeywordsStarDict, (True, False, False, True): getFunctionCallHelperPosStarDict, (False, True, False, True): getFunctionCallHelperKeywordsStarDict, (False, False, False, True): getFunctionCallHelperStarDict, (True, True, True, True): getFunctionCallHelperPosKeywordsStarListStarDict, (True, False, True, True): getFunctionCallHelperPosStarListStarDict, (False, True, True, True): getFunctionCallHelperKeywordsStarListStarDict, (False, False, True, True): getFunctionCallHelperStarListStarDict, } get_helper = table[key] helper_args = [called] if positional_args: helper_args.append( makeSequenceCreationOrConstant( sequence_kind="tuple", elements=positional_args, source_ref=source_ref, )) # Order of evaluation changed in Python3.5. if python_version >= 350 and list_star_arg is not None: helper_args.append(list_star_arg) if keys: helper_args.append( makeDictCreationOrConstant(keys=keys, values=values, source_ref=source_ref)) # Order of evaluation changed in Python3.5. if python_version < 350 and list_star_arg is not None: helper_args.append(list_star_arg) if dict_star_arg is not None: helper_args.append(dict_star_arg) result = ExpressionFunctionCall( function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef(function_body=get_helper(), source_ref=source_ref), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref, ), values=helper_args, source_ref=source_ref, ) # Bug compatible line numbers before Python 3.8 if python_version < 380: result.setCompatibleSourceReference( source_ref=helper_args[-1].getCompatibleSourceReference()) return result
def buildCallNode(provider, node, source_ref): called = buildNode(provider, node.func, source_ref) if python_version >= 350: list_star_arg = None dict_star_arg = None positional_args = [] # For Python3.5 compatibility, the error handling with star argument last # is the old one, only with a starred argument before that, things use the # new unpacking code. for node_arg in node.args[:-1]: if getKind(node_arg) == "Starred": assert python_version >= 350 list_star_arg = buildListUnpacking(provider, node.args, source_ref) positional_args = [] break else: if node.args and getKind(node.args[-1]) == "Starred": assert python_version >= 350 list_star_arg = buildNode(provider, node.args[-1].value, source_ref) positional_args = buildNodeList(provider, node.args[:-1], source_ref) else: positional_args = buildNodeList(provider, node.args, source_ref) # Only the values of keyword pairs have a real source ref, and those only # really matter, so that makes sense. keys = [] values = [] for keyword in node.keywords[:-1]: if keyword.arg is None: assert python_version >= 350 outline_body = ExpressionOutlineBody(provider=provider, name="dict_unpacking_call", source_ref=source_ref) tmp_called = outline_body.allocateTempVariable(temp_scope=None, name="called") helper_args = [ ExpressionTempVariableRef(variable=tmp_called, source_ref=source_ref), ExpressionMakeTuple( elements=buildDictionaryUnpackingArgs( provider=provider, keys=(keyword.arg for keyword in node.keywords), values=(keyword.value for keyword in node.keywords), source_ref=source_ref, ), source_ref=source_ref, ), ] dict_star_arg = ExpressionFunctionCall( function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef( function_body=getFunctionCallHelperDictionaryUnpacking( ), source_ref=source_ref, ), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref, ), values=helper_args, source_ref=source_ref, ) outline_body.setBody( makeStatementsSequenceFromStatements( StatementAssignmentVariable(variable=tmp_called, source=called, source_ref=source_ref), StatementReturn( expression=_makeCallNode( called=ExpressionTempVariableRef( variable=tmp_called, source_ref=source_ref), positional_args=positional_args, keys=keys, values=values, list_star_arg=list_star_arg, dict_star_arg=dict_star_arg, source_ref=source_ref, ), source_ref=source_ref, ), )) return outline_body # For Python3.5 compatibility, the error handling with star argument last # is the old one, only with a starred argument before that, things use the # new unpacking code. if node.keywords and node.keywords[-1].arg is None: assert python_version >= 350 dict_star_arg = buildNode(provider, node.keywords[-1].value, source_ref) keywords = node.keywords[:-1] else: keywords = node.keywords for keyword in keywords: keys.append( makeConstantRefNode(constant=keyword.arg, source_ref=source_ref, user_provided=True)) values.append(buildNode(provider, keyword.value, source_ref)) if python_version < 350: list_star_arg = buildNode(provider, node.starargs, source_ref, True) dict_star_arg = buildNode(provider, node.kwargs, source_ref, True) return _makeCallNode( called=called, positional_args=positional_args, keys=keys, values=values, list_star_arg=list_star_arg, dict_star_arg=dict_star_arg, source_ref=source_ref, )
def _buildContractionNode(provider, node, name, emit_class, start_value, assign_provider, source_ref): # The contraction nodes are reformulated to function bodies, with loops as # described in the developer manual. They use a lot of temporary names, # nested blocks, etc. and so a lot of variable names. # Note: The assign_provider is only to cover Python2 list contractions, # assigning one of the loop variables to the outside scope. if assign_provider: function_body = ExpressionOutlineBody( provider=provider, name=name, body=None, # later source_ref=source_ref) iter_tmp = function_body.allocateTempVariable(temp_scope=None, name=".0") else: function_body = ExpressionFunctionBody(provider=provider, name=name, doc=None, parameters=ParameterSpec( name="contraction", normal_args=(".0", ), list_star_arg=None, dict_star_arg=None, default_count=0, kw_only_args=()), is_class=False, source_ref=source_ref) iter_tmp = function_body.getVariableForAssignment(variable_name=".0") assert iter_tmp.isParameterVariable() if start_value is not None: container_tmp = function_body.allocateTempVariable( temp_scope=None, name="contraction_result") else: container_tmp = None statements, release_statements = _buildContractionBodyNode( function_body=function_body, assign_provider=assign_provider, provider=provider, node=node, emit_class=emit_class, iter_tmp=iter_tmp, temp_scope=None, start_value=start_value, container_tmp=container_tmp, source_ref=source_ref, ) if start_value is not None: statements.append( StatementReturn(expression=ExpressionTempVariableRef( variable=container_tmp, source_ref=source_ref), source_ref=source_ref)) statements = (makeTryFinallyStatement( provider=function_body, tried=statements, final=release_statements, source_ref=source_ref.atInternal()), ) function_body.setBody( makeStatementsSequenceFromStatement(statement=StatementsFrame( statements=mergeStatements(statements, False), guard_mode="pass_through" if emit_class is not ExpressionYield else "generator", var_names=(), arg_count=0, kw_only_count=0, has_starlist=False, has_stardict=False, code_name="contraction", source_ref=source_ref))) if not assign_provider: return ExpressionFunctionCall(function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef(function_body=function_body, source_ref=source_ref), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=(ExpressionBuiltinIter1( value=buildNode( provider=provider, node=node.generators[0].iter, source_ref=source_ref), source_ref=source_ref), ), source_ref=source_ref) else: return function_body
def buildFunctionWithParsing(provider, function_kind, name, function_doc, flags, node, source_ref): # This contains a complex re-formulation for nested parameter functions. # pylint: disable=R0914 kind = getKind(node) assert kind in ("FunctionDef", "Lambda", "AsyncFunctionDef"), "unsupported for kind " + kind def extractArg(arg): if arg is None: return None elif type(arg) is str: return mangleName(arg, provider) elif getKind(arg) == "Name": return mangleName(arg.id, provider) elif getKind(arg) == "arg": return mangleName(arg.arg, provider) elif getKind(arg) == "Tuple": # These are to be re-formulated on the outside. assert False else: assert False, getKind(arg) special_args = {} def extractNormalArgs(args): normal_args = [] for arg in args: if type(arg) is not str and getKind(arg) == "Tuple": special_arg_name = ".%d" % (len(special_args) + 1) special_args[special_arg_name] = arg.elts normal_args.append(special_arg_name) else: normal_args.append(extractArg(arg)) return normal_args normal_args = extractNormalArgs(node.args.args) parameters = ParameterSpec( ps_name=name, ps_normal_args=normal_args, ps_kw_only_args=[extractArg(arg) for arg in node.args.kwonlyargs] if python_version >= 300 else [], ps_list_star_arg=extractArg(node.args.vararg), ps_dict_star_arg=extractArg(node.args.kwarg), ps_default_count=len(node.args.defaults)) message = parameters.checkValid() if message is not None: SyntaxErrors.raiseSyntaxError(message, source_ref) code_object = CodeObjectSpec( co_name=name, co_kind=function_kind, co_varnames=parameters.getParameterNames(), co_argcount=parameters.getArgumentCount(), co_kwonlyargcount=parameters.getKwOnlyParameterCount(), co_has_starlist=parameters.getStarListArgumentName() is not None, co_has_stardict=parameters.getStarDictArgumentName() is not None) outer_body = ExpressionFunctionBody(provider=provider, name=name, flags=flags, doc=function_doc, parameters=parameters, source_ref=source_ref) if special_args: inner_name = name.strip("<>") + "$inner" inner_arg_names = [] iter_vars = [] values = [] statements = [] def unpackFrom(source, arg_names): accesses = [] sub_special_index = 0 iter_var = outer_body.allocateTempVariable( None, "arg_iter_%d" % len(iter_vars)) iter_vars.append(iter_var) statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=iter_var, source_ref=source_ref), source=ExpressionBuiltinIter1(value=source, source_ref=source_ref), source_ref=source_ref)) for element_index, arg_name in enumerate(arg_names): if getKind(arg_name) == "Name": inner_arg_names.append(arg_name.id) arg_var = outer_body.allocateTempVariable( None, "tmp_" + arg_name.id) statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=arg_var, source_ref=source_ref), source=ExpressionSpecialUnpack( value=ExpressionTempVariableRef( variable=iter_var, source_ref=source_ref), count=element_index + 1, expected=len(arg_names), source_ref=source_ref), source_ref=source_ref)) accesses.append( ExpressionTempVariableRef(variable=arg_var, source_ref=source_ref)) elif getKind(arg_name) == "Tuple": accesses.extend( unpackFrom(source=ExpressionSpecialUnpack( value=ExpressionTempVariableRef( variable=iter_var, source_ref=source_ref), count=element_index + 1, expected=len(arg_names), source_ref=source_ref), arg_names=arg_name.elts)) sub_special_index += 1 else: assert False, arg_name statements.append( StatementSpecialUnpackCheck(iterator=ExpressionTempVariableRef( variable=iter_var, source_ref=source_ref), count=len(arg_names), source_ref=source_ref)) return accesses for arg_name in parameters.getParameterNames(): if arg_name.startswith('.'): source = ExpressionVariableRef(variable_name=arg_name, source_ref=source_ref) values.extend(unpackFrom(source, special_args[arg_name])) else: values.append( ExpressionVariableRef(variable_name=arg_name, source_ref=source_ref)) inner_arg_names.append(arg_name) inner_parameters = ParameterSpec(ps_name=inner_name, ps_normal_args=inner_arg_names, ps_kw_only_args=(), ps_list_star_arg=None, ps_dict_star_arg=None, ps_default_count=None) function_body = ExpressionFunctionBody(provider=outer_body, name=inner_name, flags=flags, doc=function_doc, parameters=inner_parameters, source_ref=source_ref) statements.append( StatementReturn(ExpressionFunctionCall( function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef( function_body=function_body, source_ref=source_ref), code_object=code_object, defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=values, source_ref=source_ref), source_ref=source_ref)) outer_body.setBody( makeStatementsSequenceFromStatement( statement=makeTryFinallyStatement( provider, tried=statements, final=[ StatementReleaseVariable(variable=variable, source_ref=source_ref) for variable in outer_body.getTempVariables() ], source_ref=source_ref, public_exc=False))) else: function_body = outer_body return outer_body, function_body, code_object
def _makeCallNode( provider, called, positional_args, pairs, list_star_arg, dict_star_arg, source_ref ): # Many variables, but only to cover the many complex call cases. # pylint: disable=R0914 if list_star_arg is None and dict_star_arg is None: return ExpressionCall( called = called, args = ExpressionMakeTuple( elements = positional_args, source_ref = source_ref ), kw = ExpressionMakeDict( pairs = pairs, source_ref = source_ref ), source_ref = source_ref, ) else: # Dispatch to complex helper function for each case. These do # re-formulation of complex calls according to developer manual. key = len( positional_args ) > 0, len( pairs ) > 0, list_star_arg is not None, dict_star_arg is not None from .ComplexCallHelperFunctions import ( getFunctionCallHelperPosKeywordsStarList, getFunctionCallHelperPosStarList, getFunctionCallHelperKeywordsStarList, getFunctionCallHelperStarList, getFunctionCallHelperPosKeywordsStarDict, getFunctionCallHelperPosStarDict, getFunctionCallHelperKeywordsStarDict, getFunctionCallHelperStarDict, getFunctionCallHelperPosKeywordsStarListStarDict, getFunctionCallHelperPosStarListStarDict, getFunctionCallHelperKeywordsStarListStarDict, getFunctionCallHelperStarListStarDict, ) table = { ( True, True, True, False ) : getFunctionCallHelperPosKeywordsStarList, ( True, False, True, False ) : getFunctionCallHelperPosStarList, ( False, True, True, False ) : getFunctionCallHelperKeywordsStarList, ( False, False, True, False ) : getFunctionCallHelperStarList, ( True, True, False, True ) : getFunctionCallHelperPosKeywordsStarDict, ( True, False, False, True ) : getFunctionCallHelperPosStarDict, ( False, True, False, True ) : getFunctionCallHelperKeywordsStarDict, ( False, False, False, True ) : getFunctionCallHelperStarDict, ( True, True, True, True ) : getFunctionCallHelperPosKeywordsStarListStarDict, ( True, False, True, True ) : getFunctionCallHelperPosStarListStarDict, ( False, True, True, True ) : getFunctionCallHelperKeywordsStarListStarDict, ( False, False, True, True ) : getFunctionCallHelperStarListStarDict, } get_helper = table[ key ] helper_args = [ called ] if positional_args: helper_args.append( ExpressionMakeTuple( elements = positional_args, source_ref = source_ref ) ) if pairs: helper_args.append( ExpressionMakeDict( pairs = pairs, source_ref = source_ref ) ) if list_star_arg is not None: helper_args.append( list_star_arg ) if dict_star_arg is not None: helper_args.append( dict_star_arg ) return ExpressionFunctionCall( function = ExpressionFunctionCreation( function_ref = ExpressionFunctionRef( function_body = get_helper(), source_ref = source_ref ), defaults = (), kw_defaults = None, annotations = None, source_ref = source_ref ), values = helper_args, source_ref = source_ref, )
def _buildContractionNode(provider, node, name, emit_class, start_value, assign_provider, source_ref): # The contraction nodes are reformulated to function bodies, with loops as # described in the developer manual. They use a lot of temporary names, # nested blocks, etc. and so a lot of variable names. There is no good way # around that, and we deal with many cases, due to having generator # expressions sharing this code, pylint: disable=R0912,R0914 # Note: The assign_provider is only to cover Python2 list contractions, # assigning one of the loop variables to the outside scope. assert provider.isParentVariableProvider(), provider function_body = ExpressionFunctionBody(provider=provider, name=name, doc=None, parameters=ParameterSpec( name="contraction", normal_args=("__iterator", ), list_star_arg=None, dict_star_arg=None, default_count=0, kw_only_args=()), source_ref=source_ref) if start_value is not None: container_tmp = function_body.allocateTempVariable( temp_scope=None, name="contraction_result") else: container_tmp = None outer_iter_ref = ExpressionVariableRef(variable_name="__iterator", source_ref=source_ref) statements, del_statements = _buildContractionBodyNode( function_body=function_body, assign_provider=assign_provider, provider=provider, node=node, emit_class=emit_class, outer_iter_ref=outer_iter_ref, temp_scope=None, start_value=start_value, container_tmp=container_tmp, source_ref=source_ref, ) if start_value is not None: statements.append( StatementReturn(expression=ExpressionTempVariableRef( variable=container_tmp.makeReference(function_body), source_ref=source_ref), source_ref=source_ref)) statements = (makeTryFinallyStatement( tried=statements, final=del_statements, source_ref=source_ref.atInternal()), ) function_body.setBody( StatementsFrame(statements=statements, guard_mode="pass_through" if emit_class is not ExpressionYield else "generator", var_names=(), arg_count=0, kw_only_count=0, has_starlist=False, has_stardict=False, code_name="contraction", source_ref=source_ref)) return ExpressionFunctionCall(function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef(function_body=function_body, source_ref=source_ref), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=(ExpressionBuiltinIter1( value=buildNode( provider=provider, node=node.generators[0].iter, source_ref=source_ref), source_ref=source_ref), ), source_ref=source_ref)
def _buildContractionNode(provider, node, name, emit_class, start_value, assign_provider, source_ref): # The contraction nodes are reformulated to function bodies, with loops as # described in the developer manual. They use a lot of temporary names, # nested blocks, etc. and so a lot of variable names. There is no good way # around that, and we deal with many cases, due to having generator # expressions sharing this code, pylint: disable=R0912,R0914 # Note: The assign_provider is only to cover Python2 list contractions, # assigning one of the loop variables to the outside scope. assert provider.isParentVariableProvider(), provider function_body = ExpressionFunctionBody( provider=provider, name=name, doc=None, parameters=make_contraction_parameters, source_ref=source_ref) if start_value is not None: container_tmp = function_body.allocateTempVariable(None, "result") statements = [ StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=container_tmp.makeReference(function_body), source_ref=source_ref), source=start_value, source_ref=source_ref.atInternal()) ] else: statements = [] if hasattr(node, "elt"): if start_value is not None: current_body = emit_class(ExpressionTempVariableRef( variable=container_tmp.makeReference(function_body), source_ref=source_ref), buildNode(provider=function_body, node=node.elt, source_ref=source_ref), source_ref=source_ref) else: assert emit_class is ExpressionYield function_body.markAsGenerator() current_body = emit_class(buildNode(provider=function_body, node=node.elt, source_ref=source_ref), source_ref=source_ref) else: assert emit_class is ExpressionDictOperationSet current_body = emit_class(ExpressionTempVariableRef( variable=container_tmp.makeReference(function_body), source_ref=source_ref), key=buildNode( provider=function_body, node=node.key, source_ref=source_ref, ), value=buildNode( provider=function_body, node=node.value, source_ref=source_ref, ), source_ref=source_ref) current_body = StatementExpressionOnly(expression=current_body, source_ref=source_ref) for count, qual in enumerate(reversed(node.generators)): tmp_iter_variable = function_body.allocateTempVariable( temp_scope=None, name="contraction_iter_%d" % count) tmp_value_variable = function_body.allocateTempVariable( temp_scope=None, name="iter_value_%d" % count) # The first iterated value is to be calculated outside of the function # and will be given as a parameter "_iterated", the others are built # inside the function. if qual is node.generators[0]: value_iterator = ExpressionVariableRef(variable_name="__iterator", source_ref=source_ref) else: value_iterator = ExpressionBuiltinIter1(value=buildNode( provider=function_body, node=qual.iter, source_ref=source_ref), source_ref=source_ref) # First create the iterator and store it, next should be loop body nested_statements = [ StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_iter_variable.makeReference(function_body), source_ref=source_ref), source=value_iterator, source_ref=source_ref) ] loop_statements = [ makeTryExceptSingleHandlerNode( tried=makeStatementsSequenceFromStatement( statement=StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_value_variable.makeReference( function_body), source_ref=source_ref), source=ExpressionBuiltinNext1( value=ExpressionTempVariableRef( variable=tmp_iter_variable.makeReference( function_body), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref)), exception_name="StopIteration", handler_body=makeStatementsSequenceFromStatement( statement=StatementBreakLoop( source_ref=source_ref.atInternal())), source_ref=source_ref), buildAssignmentStatements( provider=provider if assign_provider else function_body, temp_provider=function_body, node=qual.target, source=ExpressionTempVariableRef( variable=tmp_value_variable.makeReference(function_body), source_ref=source_ref), source_ref=source_ref) ] conditions = buildNodeList(provider=function_body, nodes=qual.ifs, source_ref=source_ref) if len(conditions) == 1: loop_statements.append( StatementConditional( condition=conditions[0], yes_branch=makeStatementsSequenceFromStatement( statement=current_body), no_branch=None, source_ref=source_ref)) elif len(conditions) > 1: loop_statements.append( StatementConditional( condition=buildAndNode(provider=function_body, values=conditions, source_ref=source_ref), yes_branch=makeStatementsSequenceFromStatement( statement=current_body), no_branch=None, source_ref=source_ref)) else: loop_statements.append(current_body) nested_statements.append( StatementLoop(body=StatementsSequence( statements=mergeStatements(loop_statements), source_ref=source_ref), source_ref=source_ref)) nested_statements.append( StatementDelVariable(variable_ref=ExpressionTargetTempVariableRef( variable=tmp_iter_variable.makeReference(function_body), source_ref=source_ref), tolerant=False, source_ref=source_ref)) current_body = StatementsSequence(statements=nested_statements, source_ref=source_ref) statements.append(current_body) if start_value is not None: statements.append( StatementReturn(expression=ExpressionTempVariableRef( variable=container_tmp.makeReference(function_body), source_ref=source_ref), source_ref=source_ref)) function_body.setBody( StatementsFrame(statements=mergeStatements(statements), guard_mode="pass_through" if emit_class is not ExpressionYield else "generator", var_names=(), arg_count=0, kw_only_count=0, has_starlist=False, has_stardict=False, code_name="contraction", source_ref=source_ref)) return ExpressionFunctionCall(function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef(function_body=function_body, source_ref=source_ref), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=(ExpressionBuiltinIter1( value=buildNode( provider=provider, node=node.generators[0].iter, source_ref=source_ref), source_ref=source_ref), ), source_ref=source_ref)
def _buildClassNode3(provider, node, source_ref): # Many variables, due to the huge re-formulation that is going on here, which just has # the complexity, pylint: disable=R0914 # This function is the Python3 special case with special re-formulation as according # to developer manual. class_statements, class_doc = extractDocFromBody(node) # The result will be a temp block that holds the temporary variables. result = StatementTempBlock(source_ref=source_ref) tmp_bases = result.getTempVariable("bases") tmp_class_decl_dict = result.getTempVariable("class_decl_dict") tmp_metaclass = result.getTempVariable("metaclass") tmp_prepared = result.getTempVariable("prepared") class_creation_function = ExpressionFunctionBody( provider=provider, is_class=True, parameters=make_class_parameters, name=node.name, doc=class_doc, source_ref=source_ref) # Hack: class_creation_function.parent = provider body = buildStatementsNode(provider=class_creation_function, nodes=class_statements, frame=True, source_ref=source_ref) if body is not None: # The frame guard has nothing to tell its line number to. body.source_ref = source_ref.atInternal() statements = [ StatementSetLocals(new_locals=ExpressionTempVariableRef( variable=tmp_prepared.makeReference(result), source_ref=source_ref), source_ref=source_ref.atInternal()), StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__module__", source_ref=source_ref), source=ExpressionConstantRef( constant=provider.getParentModule().getName(), source_ref=source_ref), source_ref=source_ref.atInternal()) ] if class_doc is not None: statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__doc__", source_ref=source_ref), source=ExpressionConstantRef(constant=class_doc, source_ref=source_ref), source_ref=source_ref.atInternal())) if Utils.python_version >= 330: if provider.isExpressionFunctionBody(): qualname = provider.getName() + ".<locals>." + node.name else: qualname = node.name statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__qualname__", source_ref=source_ref), source=ExpressionConstantRef(constant=qualname, source_ref=source_ref), source_ref=source_ref.atInternal())) statements += [ body, StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef(variable_name="__class__", source_ref=source_ref), source=ExpressionCall( called=ExpressionTempVariableRef( variable=tmp_metaclass.makeReference(result), source_ref=source_ref), args=ExpressionMakeTuple( elements=(ExpressionConstantRef(constant=node.name, source_ref=source_ref), ExpressionTempVariableRef( variable=tmp_bases.makeReference(result), source_ref=source_ref), ExpressionBuiltinLocals(source_ref=source_ref)), source_ref=source_ref), kw=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(result), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref.atInternal()), StatementReturn(expression=ExpressionVariableRef( variable_name="__class__", source_ref=source_ref), source_ref=source_ref.atInternal()) ] body = makeStatementsSequence(statements=statements, allow_none=True, source_ref=source_ref) # The class body is basically a function that implicitely, at the end returns its # locals and cannot have other return statements contained. class_creation_function.setBody(body) # The class body is basically a function that implicitely, at the end returns its # created class and cannot have other return statements contained. decorated_body = ExpressionFunctionCall( function=ExpressionFunctionCreation(function_ref=ExpressionFunctionRef( function_body=class_creation_function, source_ref=source_ref), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=(), source_ref=source_ref) for decorator in buildNodeList(provider, reversed(node.decorator_list), source_ref): decorated_body = ExpressionCallNoKeywords( called=decorator, args=ExpressionMakeTuple(elements=(decorated_body, ), source_ref=source_ref), source_ref=decorator.getSourceReference()) statements = [ StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_bases.makeReference(result), source_ref=source_ref), source=ExpressionMakeTuple(elements=buildNodeList( provider, node.bases, source_ref), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_class_decl_dict.makeReference(result), source_ref=source_ref), source=ExpressionMakeDict(pairs=[ ExpressionKeyValuePair( key=ExpressionConstantRef(constant=keyword.arg, source_ref=source_ref), value=buildNode(provider, keyword.value, source_ref), source_ref=source_ref) for keyword in node.keywords ], source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_metaclass.makeReference(result), source_ref=source_ref), source=ExpressionSelectMetaclass( metaclass=ExpressionConditional( condition=ExpressionComparison( comparator="In", left=ExpressionConstantRef(constant="metaclass", source_ref=source_ref), right=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(result), source_ref=source_ref), source_ref=source_ref), yes_expression=ExpressionDictOperationGet( dicte=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(result), source_ref=source_ref), key=ExpressionConstantRef(constant="metaclass", source_ref=source_ref), source_ref=source_ref), no_expression=ExpressionConditional( condition=ExpressionTempVariableRef( variable=tmp_bases.makeReference(result), source_ref=source_ref), no_expression=ExpressionBuiltinRef( builtin_name="type", source_ref=source_ref), yes_expression=ExpressionBuiltinType1( value=ExpressionSubscriptLookup( expression=ExpressionTempVariableRef( variable=tmp_bases.makeReference(result), source_ref=source_ref), subscript=ExpressionConstantRef( constant=0, source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), bases=ExpressionTempVariableRef( variable=tmp_bases.makeReference(result), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), StatementConditional( condition=ExpressionComparison( comparator="In", left=ExpressionConstantRef(constant="metaclass", source_ref=source_ref), right=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(result), source_ref=source_ref), source_ref=source_ref), no_branch=None, yes_branch=makeStatementsSequenceFromStatement( statement=StatementDictOperationRemove( dicte=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(result), source_ref=source_ref), key=ExpressionConstantRef(constant="metaclass", source_ref=source_ref), source_ref=source_ref)), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_prepared.makeReference(result), source_ref=source_ref), source=ExpressionConditional( condition=ExpressionBuiltinHasattr( object=ExpressionTempVariableRef( variable=tmp_metaclass.makeReference(result), source_ref=source_ref), name=ExpressionConstantRef(constant="__prepare__", source_ref=source_ref), source_ref=source_ref), no_expression=ExpressionConstantRef(constant={}, source_ref=source_ref), yes_expression=ExpressionCall( called=ExpressionAttributeLookup( expression=ExpressionTempVariableRef( variable=tmp_metaclass.makeReference(result), source_ref=source_ref), attribute_name="__prepare__", source_ref=source_ref), args=ExpressionMakeTuple( elements=(ExpressionConstantRef(constant=node.name, source_ref=source_ref), ExpressionTempVariableRef( variable=tmp_bases.makeReference(result), source_ref=source_ref)), source_ref=source_ref), kw=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(result), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable(variable_ref=ExpressionTargetVariableRef( variable_name=node.name, source_ref=source_ref), source=decorated_body, source_ref=source_ref) ] result.setBody( StatementsSequence(statements=statements, source_ref=source_ref)) return result
def _buildClassNode2(provider, node, source_ref): class_statements, class_doc = extractDocFromBody(node) # This function is the Python3 special case with special re-formulation as according # to developer manual. # The result will be a temp block that holds the temporary variables. result = StatementTempBlock(source_ref=source_ref) tmp_bases = result.getTempVariable("bases") tmp_class_dict = result.getTempVariable("class_dict") tmp_metaclass = result.getTempVariable("metaclass") tmp_class = result.getTempVariable("class") class_creation_function = ExpressionFunctionBody( provider=provider, is_class=True, parameters=make_class_parameters, name=node.name, doc=class_doc, source_ref=source_ref) body = buildStatementsNode(provider=class_creation_function, nodes=class_statements, frame=True, source_ref=source_ref) if body is not None: # The frame guard has nothing to tell its line number to. body.source_ref = source_ref.atInternal() # The class body is basically a function that implicitely, at the end returns its # locals and cannot have other return statements contained, and starts out with a # variables "__module__" and potentially "__doc__" set. statements = [ StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__module__", source_ref=source_ref), source=ExpressionConstantRef( constant=provider.getParentModule().getName(), source_ref=source_ref), source_ref=source_ref.atInternal()) ] if class_doc is not None: statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__doc__", source_ref=source_ref), source=ExpressionConstantRef(constant=class_doc, source_ref=source_ref), source_ref=source_ref.atInternal())) statements += [ body, StatementReturn( expression=ExpressionBuiltinLocals(source_ref=source_ref), source_ref=source_ref.atInternal()) ] body = makeStatementsSequence(statements=statements, allow_none=True, source_ref=source_ref) # The class body is basically a function that implicitely, at the end returns its # locals and cannot have other return statements contained. class_creation_function.setBody(body) statements = [ StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_bases.makeReference(result), source_ref=source_ref), source=ExpressionMakeTuple(elements=buildNodeList( provider, node.bases, source_ref), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_class_dict.makeReference(result), source_ref=source_ref), source=ExpressionFunctionCall(function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef( function_body=class_creation_function, source_ref=source_ref), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=(), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_metaclass.makeReference(result), source_ref=source_ref), source=ExpressionConditional( condition=ExpressionComparison( comparator="In", left=ExpressionConstantRef(constant="__metaclass__", source_ref=source_ref), right=ExpressionTempVariableRef( variable=tmp_class_dict.makeReference(result), source_ref=source_ref), source_ref=source_ref), yes_expression=ExpressionDictOperationGet( dicte=ExpressionTempVariableRef( variable=tmp_class_dict.makeReference(result), source_ref=source_ref), key=ExpressionConstantRef(constant="__metaclass__", source_ref=source_ref), source_ref=source_ref), no_expression=ExpressionSelectMetaclass( metaclass=None, bases=ExpressionTempVariableRef( variable=tmp_bases.makeReference(result), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_class.makeReference(result), source_ref=source_ref), source=ExpressionCallNoKeywords( called=ExpressionTempVariableRef( variable=tmp_metaclass.makeReference(result), source_ref=source_ref), args=ExpressionMakeTuple(elements=( ExpressionConstantRef(constant=node.name, source_ref=source_ref), ExpressionTempVariableRef( variable=tmp_bases.makeReference(result), source_ref=source_ref), ExpressionTempVariableRef( variable=tmp_class_dict.makeReference(result), source_ref=source_ref)), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref) ] for decorator in buildNodeList(provider, reversed(node.decorator_list), source_ref): statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_class.makeReference(result), source_ref=source_ref), source=ExpressionCallNoKeywords( called=decorator, args=ExpressionMakeTuple( elements=(ExpressionTempVariableRef( variable=tmp_class.makeReference(result), source_ref=source_ref), ), source_ref=source_ref), source_ref=decorator.getSourceReference()), source_ref=decorator.getSourceReference())) statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef(variable_name=node.name, source_ref=source_ref), source=ExpressionTempVariableRef( variable=tmp_class.makeReference(result), source_ref=source_ref), source_ref=source_ref)) result.setBody( StatementsSequence(statements=statements, source_ref=source_ref)) return result
def _buildContractionNode(provider, node, name, emit_class, start_value, source_ref): # The contraction nodes are reformulated to function bodies, with loops as # described in the developer manual. They use a lot of temporary names, # nested blocks, etc. and so a lot of variable names. # TODO: No function ought to be necessary. function_body = ExpressionFunctionBody(provider=provider, name=name, doc=None, parameters=ParameterSpec( ps_name=name, ps_normal_args=(".0", ), ps_list_star_arg=None, ps_dict_star_arg=None, ps_default_count=0, ps_kw_only_args=()), flags=set(), source_ref=source_ref) iter_tmp = function_body.getVariableForAssignment(variable_name=".0") assert iter_tmp.isParameterVariable() code_object = CodeObjectSpec( co_name=name, co_kind="Generator" if emit_class is ExpressionYield else "Function", co_varnames=function_body.getParameters().getParameterNames(), co_argcount=len(function_body.getParameters().getParameterNames()), co_kwonlyargcount=0, co_has_starlist=False, co_has_stardict=False, ) if emit_class is ExpressionYield: code_body = ExpressionGeneratorObjectBody(provider=function_body, name="<genexpr>", flags=set(), source_ref=source_ref) iter_tmp = code_body.getVariableForReference(variable_name=".0") assert iter_tmp.isLocalVariable() function_body.setBody( makeStatementsSequenceFromStatement(statement=StatementReturn( expression=ExpressionMakeGeneratorObject( generator_ref=ExpressionFunctionRef( function_body=code_body, source_ref=source_ref), code_object=code_object, source_ref=source_ref), source_ref=source_ref))) else: code_body = function_body if start_value is not None: container_tmp = code_body.allocateTempVariable( temp_scope=None, name="contraction_result") else: container_tmp = None statements, release_statements = _buildContractionBodyNode( function_body=code_body, provider=provider, node=node, emit_class=emit_class, iter_tmp=iter_tmp, temp_scope=None, start_value=start_value, container_tmp=container_tmp, assign_provider=False, source_ref=source_ref, ) if start_value is not None: statements.append( StatementReturn(expression=ExpressionTempVariableRef( variable=container_tmp, source_ref=source_ref), source_ref=source_ref)) statements = (makeTryFinallyStatement( provider=function_body, tried=statements, final=release_statements, source_ref=source_ref.atInternal()), ) if emit_class is ExpressionYield: guard_mode = "generator" else: guard_mode = "full" code_body.setBody( makeStatementsSequenceFromStatement(statement=StatementsFrame( statements=mergeStatements(statements, False), guard_mode=guard_mode, code_object=code_object, source_ref=source_ref))) return ExpressionFunctionCall(function=ExpressionFunctionCreation( function_ref=ExpressionFunctionRef(function_body=function_body, source_ref=source_ref), code_object=code_object, defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=(ExpressionBuiltinIter1( value=buildNode( provider=provider, node=node.generators[0].iter, source_ref=source_ref), source_ref=source_ref), ), source_ref=source_ref)
def _buildClassNode3(provider, node, source_ref): # Many variables, due to the huge re-formulation that is going on here, # which just has the complexity, pylint: disable=R0914 # This function is the Python3 special case with special re-formulation as # according to developer manual. class_statements, class_doc = extractDocFromBody(node) # We need a scope for the temporary variables, and they might be closured. temp_scope = provider.allocateTempScope(name="class_creation", allow_closure=True) tmp_bases = provider.allocateTempVariable(temp_scope=temp_scope, name="bases") tmp_class_decl_dict = provider.allocateTempVariable(temp_scope=temp_scope, name="class_decl_dict") tmp_metaclass = provider.allocateTempVariable(temp_scope=temp_scope, name="metaclass") tmp_prepared = provider.allocateTempVariable(temp_scope=temp_scope, name="prepared") class_creation_function = ExpressionFunctionBody( provider=provider, is_class=True, parameters=make_class_parameters, name=node.name, doc=class_doc, source_ref=source_ref) # Hack: This allows some APIs to work although this is not yet officially a # child yet. class_creation_function.parent = provider body = buildStatementsNode(provider=class_creation_function, nodes=class_statements, frame=True, source_ref=source_ref) source_ref_orig = source_ref if body is not None: # The frame guard has nothing to tell its line number to. body.source_ref = source_ref module_variable = class_creation_function.getVariableForAssignment( "__module__") statements = [ StatementSetLocals(new_locals=ExpressionTempVariableRef( variable=tmp_prepared.makeReference(provider), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__module__", variable=module_variable, source_ref=source_ref), source=ExpressionConstantRef( constant=provider.getParentModule().getFullName(), source_ref=source_ref, user_provided=True), source_ref=source_ref) ] if class_doc is not None: doc_variable = class_creation_function.getVariableForAssignment( "__doc__") statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__doc__", variable=doc_variable, source_ref=source_ref), source=ExpressionConstantRef(constant=class_doc, source_ref=source_ref, user_provided=True), source_ref=source_ref)) # The "__qualname__" attribute is new in Python 3.3. if Utils.python_version >= 330: qualname = class_creation_function.getFunctionQualname() qualname_variable = class_creation_function.getVariableForAssignment( "__qualname__") statements.append( StatementAssignmentVariable( variable_ref=ExpressionTargetVariableRef( variable_name="__qualname__", variable=qualname_variable, source_ref=source_ref), source=ExpressionConstantRef(constant=qualname, source_ref=source_ref, user_provided=True), source_ref=source_ref)) if Utils.python_version >= 340 and False: # TODO: Temporarily reverted: tmp_class = class_creation_function.allocateTempVariable( temp_scope=None, name="__class__") class_target_variable_ref = ExpressionTargetTempVariableRef( variable=tmp_class.makeReference(class_creation_function), source_ref=source_ref) class_variable_ref = ExpressionTempVariableRef( variable=tmp_class.makeReference(class_creation_function), source_ref=source_ref) else: class_variable = class_creation_function.getVariableForAssignment( "__class__") class_target_variable_ref = ExpressionTargetVariableRef( variable_name="__class__", variable=class_variable, source_ref=source_ref) class_variable_ref = ExpressionVariableRef(variable_name="__class__", variable=class_variable, source_ref=source_ref) statements += [ body, StatementAssignmentVariable( variable_ref=class_target_variable_ref, source=ExpressionCall( called=ExpressionTempVariableRef( variable=tmp_metaclass.makeReference(provider), source_ref=source_ref), args=makeSequenceCreationOrConstant( sequence_kind="tuple", elements=(ExpressionConstantRef(constant=node.name, source_ref=source_ref, user_provided=True), ExpressionTempVariableRef( variable=tmp_bases.makeReference(provider), source_ref=source_ref), ExpressionBuiltinLocals(source_ref=source_ref)), source_ref=source_ref), kw=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(provider), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), StatementReturn(expression=class_variable_ref, source_ref=source_ref) ] body = makeStatementsSequence(statements=statements, allow_none=True, source_ref=source_ref) # The class body is basically a function that implicitely, at the end # returns its locals and cannot have other return statements contained. class_creation_function.setBody(body) # The class body is basically a function that implicitely, at the end # returns its created class and cannot have other return statements # contained. decorated_body = ExpressionFunctionCall( function=ExpressionFunctionCreation(function_ref=ExpressionFunctionRef( function_body=class_creation_function, source_ref=source_ref), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref), values=(), source_ref=source_ref) for decorator in buildNodeList(provider, reversed(node.decorator_list), source_ref): decorated_body = ExpressionCallNoKeywords( called=decorator, args=ExpressionMakeTuple(elements=(decorated_body, ), source_ref=source_ref), source_ref=decorator.getSourceReference()) statements = ( StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_bases.makeReference(provider), source_ref=source_ref), source=makeSequenceCreationOrConstant(sequence_kind="tuple", elements=buildNodeList( provider, node.bases, source_ref), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_class_decl_dict.makeReference(provider), source_ref=source_ref), source=makeDictCreationOrConstant(keys=[ ExpressionConstantRef(constant=keyword.arg, source_ref=source_ref, user_provided=True) for keyword in node.keywords ], values=[ buildNode( provider, keyword.value, source_ref) for keyword in node.keywords ], lazy_order=False, source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_metaclass.makeReference(provider), source_ref=source_ref), source=ExpressionSelectMetaclass(metaclass=ExpressionConditional( condition=ExpressionComparison( comparator="In", left=ExpressionConstantRef(constant="metaclass", source_ref=source_ref, user_provided=True), right=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(provider), source_ref=source_ref), source_ref=source_ref), yes_expression=ExpressionDictOperationGet( dicte=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(provider), source_ref=source_ref), key=ExpressionConstantRef(constant="metaclass", source_ref=source_ref, user_provided=True), source_ref=source_ref), no_expression=ExpressionConditional( condition=ExpressionTempVariableRef( variable=tmp_bases.makeReference(provider), source_ref=source_ref), no_expression=ExpressionBuiltinRef(builtin_name="type", source_ref=source_ref), yes_expression=ExpressionBuiltinType1( value=ExpressionSubscriptLookup( expression=ExpressionTempVariableRef( variable=tmp_bases.makeReference(provider), source_ref=source_ref), subscript=ExpressionConstantRef( constant=0, source_ref=source_ref, user_provided=True), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), bases=ExpressionTempVariableRef( variable=tmp_bases. makeReference(provider), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref_orig), StatementConditional( condition=ExpressionComparison( comparator="In", left=ExpressionConstantRef(constant="metaclass", source_ref=source_ref, user_provided=True), right=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(provider), source_ref=source_ref), source_ref=source_ref), no_branch=None, yes_branch=makeStatementsSequenceFromStatement( statement=StatementDictOperationRemove( dicte=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(provider), source_ref=source_ref), key=ExpressionConstantRef(constant="metaclass", source_ref=source_ref, user_provided=True), source_ref=source_ref)), source_ref=source_ref), StatementAssignmentVariable( variable_ref=ExpressionTargetTempVariableRef( variable=tmp_prepared.makeReference(provider), source_ref=source_ref), source=ExpressionConditional( condition=ExpressionBuiltinHasattr( object=ExpressionTempVariableRef( variable=tmp_metaclass.makeReference(provider), source_ref=source_ref), name=ExpressionConstantRef(constant="__prepare__", source_ref=source_ref, user_provided=True), source_ref=source_ref), no_expression=ExpressionConstantRef(constant={}, source_ref=source_ref, user_provided=True), yes_expression=ExpressionCall( called=ExpressionAttributeLookup( expression=ExpressionTempVariableRef( variable=tmp_metaclass.makeReference(provider), source_ref=source_ref), attribute_name="__prepare__", source_ref=source_ref), args=ExpressionMakeTuple(elements=( ExpressionConstantRef(constant=node.name, source_ref=source_ref, user_provided=True), ExpressionTempVariableRef( variable=tmp_bases.makeReference(provider), source_ref=source_ref)), source_ref=source_ref), kw=ExpressionTempVariableRef( variable=tmp_class_decl_dict.makeReference(provider), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), source_ref=source_ref), StatementAssignmentVariable(variable_ref=ExpressionTargetVariableRef( variable_name=node.name, source_ref=source_ref), source=decorated_body, source_ref=source_ref), ) final = (StatementDelVariable(variable_ref=ExpressionTargetTempVariableRef( variable=tmp_bases.makeReference(provider), source_ref=source_ref), tolerant=True, source_ref=source_ref), StatementDelVariable(variable_ref=ExpressionTargetTempVariableRef( variable=tmp_class_decl_dict.makeReference(provider), source_ref=source_ref), tolerant=True, source_ref=source_ref), StatementDelVariable(variable_ref=ExpressionTargetTempVariableRef( variable=tmp_metaclass.makeReference(provider), source_ref=source_ref), tolerant=True, source_ref=source_ref), StatementDelVariable(variable_ref=ExpressionTargetTempVariableRef( variable=tmp_prepared.makeReference(provider), source_ref=source_ref), tolerant=True, source_ref=source_ref)) return makeTryFinallyStatement(tried=statements, final=final, source_ref=source_ref)