def _makeCall(module_name, import_name, attribute_name, source_ref, *args): return ExpressionCallNoKeywords( called=ExpressionAttributeLookup( expression=ExpressionImportModuleNameHard( module_name=module_name, import_name=import_name, source_ref=source_ref ), attribute_name=attribute_name, source_ref=source_ref, ), args=makeExpressionMakeTuple(elements=args, source_ref=source_ref), source_ref=source_ref, )
def buildAssertNode(provider, node, source_ref): # Build assert statements. These are re-formulated as described in the # developer manual too. They end up as conditional statement with raises of # AssertionError exceptions. # Underlying assumption: # # Assert x, y is the same as: # if not x: # raise AssertionError, y # Therefore assert statements are really just conditional statements with a # static raise contained. # exception_value = buildNode(provider, node.msg, source_ref, True) if "no_asserts" in getPythonFlags(): return None if exception_value is not None and python_version >= 0x272: exception_value = makeExpressionMakeTuple(elements=(exception_value, ), source_ref=source_ref) raise_statement = StatementRaiseException( exception_type=ExpressionBuiltinExceptionRef( exception_name="AssertionError", source_ref=source_ref), exception_value=exception_value, exception_trace=None, exception_cause=None, source_ref=source_ref, ) return makeStatementConditional( condition=ExpressionOperationNot(operand=buildNode( provider, node.test, source_ref), source_ref=source_ref), yes_branch=raise_statement, no_branch=None, source_ref=source_ref, )
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), defaults=(), kw_defaults=None, annotations=None, source_ref=source_ref, ), values=(makeExpressionMakeTuple(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( makeExpressionMakeTupleOrConstant( elements=(buildNode(provider, element, source_ref), ), user_provided=True, 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=(makeExpressionMakeTuple(helper_args, source_ref), ), source_ref=source_ref, ) result.setCompatibleSourceReference( helper_args[-1].getCompatibleSourceReference()) return result
def getClassBasesMroConversionHelper(): helper_name = "_mro_entries_conversion" result = makeInternalHelperFunctionBody( name=helper_name, parameters=ParameterSpec( ps_name=helper_name, ps_normal_args=("bases", ), ps_pos_only_args=(), ps_list_star_arg=None, ps_dict_star_arg=None, ps_default_count=0, ps_kw_only_args=(), ), inline_const_args=False, # TODO: Allow this. ) temp_scope = None tmp_result_variable = result.allocateTempVariable(temp_scope, "list") tmp_iter_variable = result.allocateTempVariable(temp_scope, "iter") tmp_item_variable = result.allocateTempVariable(temp_scope, "base") args_variable = result.getVariableForAssignment(variable_name="bases") non_type_case = makeStatementConditional( condition=ExpressionAttributeCheck( expression=ExpressionTempVariableRef( variable=tmp_item_variable, source_ref=internal_source_ref), attribute_name="__mro_entries__", source_ref=internal_source_ref, ), yes_branch=StatementExpressionOnly( expression=ExpressionListOperationExtend( list_arg=ExpressionTempVariableRef( variable=tmp_result_variable, source_ref=internal_source_ref), value=makeExpressionCall( called=ExpressionAttributeLookup( expression=ExpressionTempVariableRef( variable=tmp_item_variable, source_ref=internal_source_ref), attribute_name="__mro_entries__", source_ref=internal_source_ref, ), args=makeExpressionMakeTuple( elements=(ExpressionVariableRef( variable=args_variable, source_ref=internal_source_ref), ), source_ref=internal_source_ref, ), kw=None, source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), no_branch=StatementListOperationAppend( list_arg=ExpressionTempVariableRef(variable=tmp_result_variable, source_ref=internal_source_ref), value=ExpressionTempVariableRef(variable=tmp_item_variable, source_ref=internal_source_ref), source_ref=internal_source_ref, ), source_ref=internal_source_ref, ) type_case = StatementListOperationAppend( list_arg=ExpressionTempVariableRef(variable=tmp_result_variable, source_ref=internal_source_ref), value=ExpressionTempVariableRef(variable=tmp_item_variable, source_ref=internal_source_ref), source_ref=internal_source_ref, ) loop_body = makeStatementsSequenceFromStatements( makeTryExceptSingleHandlerNode( tried=StatementAssignmentVariable( variable=tmp_item_variable, source=ExpressionBuiltinNext1( value=ExpressionTempVariableRef( variable=tmp_iter_variable, source_ref=internal_source_ref), source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), exception_name="StopIteration", handler_body=StatementLoopBreak(source_ref=internal_source_ref), source_ref=internal_source_ref, ), makeStatementConditional( condition=ExpressionConditionalAnd( left=ExpressionBuiltinIsinstance( instance=ExpressionTempVariableRef( variable=tmp_item_variable, source_ref=internal_source_ref), classes=makeConstantRefNode( constant=type, source_ref=internal_source_ref), source_ref=internal_source_ref, ), right=ExpressionBuiltinIssubclass( cls=ExpressionTempVariableRef( variable=tmp_item_variable, source_ref=internal_source_ref), classes=makeConstantRefNode( constant=type, source_ref=internal_source_ref), source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), yes_branch=type_case, no_branch=non_type_case, source_ref=internal_source_ref, ), ) final = ( StatementReleaseVariable(variable=args_variable, source_ref=internal_source_ref), StatementReleaseVariable(variable=tmp_result_variable, source_ref=internal_source_ref), StatementReleaseVariable(variable=tmp_iter_variable, source_ref=internal_source_ref), StatementReleaseVariable(variable=tmp_item_variable, source_ref=internal_source_ref), ) tried = makeStatementsSequenceFromStatements( StatementAssignmentVariable( variable=tmp_iter_variable, source=ExpressionBuiltinIter1( value=ExpressionVariableRef(variable=args_variable, source_ref=internal_source_ref), source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), StatementAssignmentVariable( variable=tmp_result_variable, source=makeConstantRefNode(constant=[], source_ref=internal_source_ref), source_ref=internal_source_ref, ), StatementLoop(loop_body=loop_body, source_ref=internal_source_ref), StatementReturn( expression=ExpressionBuiltinTuple( value=ExpressionTempVariableRef( variable=tmp_result_variable, source_ref=internal_source_ref), source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), ) result.setChild( "body", makeStatementsSequenceFromStatement( makeTryFinallyStatement( provider=result, tried=tried, final=final, source_ref=internal_source_ref, )), ) 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 buildCallNode(provider, node, source_ref): called = buildNode(provider, node.func, source_ref) if python_version >= 0x350: 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 >= 0x350 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 >= 0x350 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 >= 0x350 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), makeExpressionMakeTuple( 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.setChild( "body", 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 >= 0x350 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 < 0x350: 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 getDictUnpackingHelper(): helper_name = "_unpack_dict" result = makeInternalHelperFunctionBody( name=helper_name, parameters=ParameterSpec( ps_name=helper_name, ps_normal_args=(), ps_list_star_arg="args", ps_dict_star_arg=None, ps_default_count=0, ps_kw_only_args=(), ps_pos_only_args=(), ), ) temp_scope = None tmp_result_variable = result.allocateTempVariable(temp_scope, "dict") tmp_iter_variable = result.allocateTempVariable(temp_scope, "iter") tmp_item_variable = result.allocateTempVariable(temp_scope, "keys") loop_body = makeStatementsSequenceFromStatements( makeTryExceptSingleHandlerNode( tried=StatementAssignmentVariable( variable=tmp_item_variable, source=ExpressionBuiltinNext1( value=ExpressionTempVariableRef( variable=tmp_iter_variable, source_ref=internal_source_ref), source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), exception_name="StopIteration", handler_body=StatementLoopBreak(source_ref=internal_source_ref), source_ref=internal_source_ref, ), makeTryExceptSingleHandlerNode( tried=StatementDictOperationUpdate( dict_arg=ExpressionTempVariableRef( variable=tmp_result_variable, source_ref=internal_source_ref), value=ExpressionTempVariableRef( variable=tmp_item_variable, source_ref=internal_source_ref), source_ref=internal_source_ref, ), exception_name="AttributeError", handler_body=StatementRaiseException( exception_type=ExpressionBuiltinMakeException( exception_name="TypeError", args=(makeBinaryOperationNode( operator="Mod", left=makeConstantRefNode( constant="""\ '%s' object is not a mapping""", source_ref=internal_source_ref, user_provided=True, ), right=makeExpressionMakeTuple( elements=(ExpressionAttributeLookup( expression=ExpressionBuiltinType1( value=ExpressionTempVariableRef( variable=tmp_item_variable, source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), attribute_name="__name__", source_ref=internal_source_ref, ), ), source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), ), source_ref=internal_source_ref, ), exception_value=None, exception_trace=None, exception_cause=None, source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), ) args_variable = result.getVariableForAssignment(variable_name="args") final = ( StatementReleaseVariable(variable=tmp_result_variable, source_ref=internal_source_ref), StatementReleaseVariable(variable=tmp_iter_variable, source_ref=internal_source_ref), StatementReleaseVariable(variable=tmp_item_variable, source_ref=internal_source_ref), ) tried = makeStatementsSequenceFromStatements( StatementAssignmentVariable( variable=tmp_iter_variable, source=ExpressionBuiltinIter1( value=ExpressionVariableRef(variable=args_variable, source_ref=internal_source_ref), source_ref=internal_source_ref, ), source_ref=internal_source_ref, ), StatementAssignmentVariable( variable=tmp_result_variable, source=makeConstantRefNode(constant={}, source_ref=internal_source_ref), source_ref=internal_source_ref, ), StatementLoop(body=loop_body, source_ref=internal_source_ref), StatementReturn( expression=ExpressionTempVariableRef( variable=tmp_result_variable, source_ref=internal_source_ref), source_ref=internal_source_ref, ), ) result.setBody( makeStatementsSequenceFromStatement( makeTryFinallyStatement( provider=result, tried=tried, final=final, source_ref=internal_source_ref, ))) return result
def createPathAssignment(package, source_ref): if Options.getFileReferenceMode() == "original": path_value = makeConstantRefNode( constant=[os.path.dirname(source_ref.getFilename())], source_ref=source_ref, user_provided=True, ) else: elements = [ ExpressionCallNoKeywords( called=ExpressionAttributeLookup( expression=ExpressionImportModuleNameHard( module_name="os", import_name="path", source_ref=source_ref ), attribute_name="dirname", source_ref=source_ref, ), args=makeExpressionMakeTuple( elements=( ExpressionModuleAttributeFileRef( variable=package.getVariableForReference("__file__"), source_ref=source_ref, ), ), source_ref=source_ref, ), source_ref=source_ref, ) ] if package.canHaveExternalImports(): parts = package.getFullName().asString().split(".") for count in range(len(parts)): path_part = _makeCall( "os", "environ", "get", source_ref, makeConstantRefNode( constant="NUITKA_PACKAGE_%s" % "_".join(parts[: count + 1]), source_ref=source_ref, ), makeConstantRefNode(constant="/notexist", source_ref=source_ref), ) if parts[count + 1 :]: path_part = _makeCall( "os", "path", "join", source_ref, path_part, makeConstantRefNode( constant=os.path.join(*parts[count + 1 :]), source_ref=source_ref, ), ) elements.append(path_part) path_value = makeExpressionMakeList(elements=elements, source_ref=source_ref) return StatementAssignmentVariableName( provider=package, variable_name="__path__", source=path_value, source_ref=source_ref, )
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=too-many-locals class_statement_nodes, class_doc = extractDocFromBody(node) function_body = ExpressionClassBody(provider=provider, name=node.name, doc=class_doc, 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=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() locals_scope = function_body.getLocalsScope() # 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 = [ StatementSetLocalsDictionary(locals_scope=locals_scope, source_ref=source_ref), StatementAssignmentVariableName( provider=function_body, variable_name="__module__", source=ExpressionModuleAttributeNameRef( variable=provider.getParentModule().getVariableForReference( "__name__"), source_ref=source_ref, ), source_ref=source_ref.atInternal(), ), ] if class_doc is not None: statements.append( StatementAssignmentVariableName( provider=function_body, variable_name="__doc__", source=makeConstantRefNode(constant=class_doc, source_ref=source_ref, user_provided=True), source_ref=source_ref.atInternal(), )) statements += ( body, StatementReturn( expression=ExpressionBuiltinLocalsRef(locals_scope=locals_scope, source_ref=source_ref), source_ref=source_ref, ), ) body = makeStatementsSequenceFromStatement( statement=makeTryFinallyStatement( provider=function_body, 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. 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") select_metaclass = ExpressionOutlineBody(provider=provider, name="select_metaclass", body=None, source_ref=source_ref) if node.bases: tmp_base = select_metaclass.allocateTempVariable(temp_scope=None, name="base") statements = ( StatementAssignmentVariable( variable=tmp_base, source=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, ), makeTryFinallyStatement( provider, tried=StatementTry( tried=makeStatementsSequenceFromStatement( statement=StatementReturn( expression=ExpressionAttributeLookup( expression=ExpressionTempVariableRef( variable=tmp_base, source_ref=source_ref), attribute_name="__class__", source_ref=source_ref, ), source_ref=source_ref, )), except_handler=makeStatementsSequenceFromStatement( statement=StatementReturn( expression=ExpressionBuiltinType1( value=ExpressionTempVariableRef( variable=tmp_base, source_ref=source_ref), source_ref=source_ref, ), source_ref=source_ref, )), break_handler=None, continue_handler=None, return_handler=None, source_ref=source_ref, ), final=StatementReleaseVariable(variable=tmp_base, source_ref=source_ref), source_ref=source_ref, public_exc=False, ), ) else: statements = ( StatementTry( tried=makeStatementsSequenceFromStatement( statement=StatementReturn( # TODO: Should avoid checking __builtins__ for this. expression=ExpressionVariableNameRef( variable_name="__metaclass__", provider=parent_module, source_ref=source_ref, ), source_ref=source_ref, )), except_handler=makeStatementsSequenceFromStatement( statement=StatementReturn( expression=ExpressionBuiltinAnonymousRef( builtin_name="classobj", source_ref=source_ref), source_ref=source_ref, )), break_handler=None, continue_handler=None, return_handler=None, source_ref=source_ref, ), ) select_metaclass.setBody( makeStatementsSequence(statements=statements, allow_none=False, source_ref=source_ref)) statements = [ StatementAssignmentVariable( variable=tmp_bases, source=makeExpressionMakeTupleOrConstant( elements=buildNodeList(provider=provider, nodes=node.bases, source_ref=source_ref), user_provided=True, source_ref=source_ref, ), source_ref=source_ref, ), StatementAssignmentVariable(variable=tmp_class_dict, source=function_body, source_ref=source_ref), StatementAssignmentVariable( variable=tmp_metaclass, source=ExpressionConditional( condition=ExpressionDictOperationIn( key=makeConstantRefNode( constant="__metaclass__", source_ref=source_ref, user_provided=True, ), dict_arg=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=select_metaclass, source_ref=source_ref, ), source_ref=source_ref, ), StatementAssignmentVariable( variable=tmp_class, 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, ), ExpressionTempVariableRef(variable=tmp_bases, source_ref=source_ref), ExpressionTempVariableRef(variable=tmp_class_dict, source_ref=source_ref), ), source_ref=source_ref, ), kw=None, source_ref=source_ref, ), source_ref=source_ref, ), ] for decorator in buildNodeList(provider, reversed(node.decorator_list), source_ref): statements.append( StatementAssignmentVariable( variable=tmp_class, source=makeExpressionCall( called=decorator, args=makeExpressionMakeTuple( elements=(ExpressionTempVariableRef( variable=tmp_class, source_ref=source_ref), ), source_ref=source_ref, ), kw=None, source_ref=decorator.getSourceReference(), ), source_ref=decorator.getSourceReference(), )) statements.append( StatementAssignmentVariableName( provider=provider, variable_name=mangleName(node.name, provider), 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 _buildWithNode(provider, context_expr, assign_target, body, sync, source_ref): # Many details, pylint: disable=too-many-locals with_source = buildNode(provider, context_expr, source_ref) if python_version < 380 and Options.is_fullcompat: source_ref = with_source.getCompatibleSourceReference() temp_scope = provider.allocateTempScope("with") tmp_source_variable = provider.allocateTempVariable(temp_scope=temp_scope, name="source") tmp_exit_variable = provider.allocateTempVariable(temp_scope=temp_scope, name="exit") tmp_enter_variable = provider.allocateTempVariable(temp_scope=temp_scope, name="enter") # Indicator variable, will end up with C bool type, and need not be released. tmp_indicator_variable = provider.allocateTempVariable( temp_scope=temp_scope, name="indicator", temp_type="bool") statements = ( buildAssignmentStatements( provider=provider, node=assign_target, allow_none=True, source=ExpressionTempVariableRef(variable=tmp_enter_variable, source_ref=source_ref), source_ref=source_ref, ), body, ) with_body = makeStatementsSequence(statements=statements, allow_none=True, source_ref=source_ref) if body: deepest = body while deepest.getVisitableNodes(): deepest = deepest.getVisitableNodes()[-1] if python_version < 370: body_lineno = deepest.getCompatibleSourceReference().getLineNumber( ) else: body_lineno = deepest.getSourceReference().getLineNumber() with_exit_source_ref = source_ref.atLineNumber(body_lineno) else: with_exit_source_ref = source_ref # The "__enter__" and "__exit__" were normal attribute lookups under # CPython2.6, but that changed with CPython2.7. if python_version < 270: attribute_lookup_class = ExpressionAttributeLookup else: attribute_lookup_class = ExpressionAttributeLookupSpecial enter_value = ExpressionCallEmpty( called=attribute_lookup_class( expression=ExpressionTempVariableRef(variable=tmp_source_variable, source_ref=source_ref), attribute_name="__enter__" if sync else "__aenter__", source_ref=source_ref, ), source_ref=source_ref, ) exit_value_exception = ExpressionCallNoKeywords( called=ExpressionTempVariableRef(variable=tmp_exit_variable, source_ref=with_exit_source_ref), args=makeExpressionMakeTuple( elements=( ExpressionCaughtExceptionTypeRef( source_ref=with_exit_source_ref), ExpressionCaughtExceptionValueRef( source_ref=with_exit_source_ref), ExpressionCaughtExceptionTracebackRef(source_ref=source_ref), ), source_ref=source_ref, ), source_ref=with_exit_source_ref, ) exit_value_no_exception = ExpressionCallNoKeywords( called=ExpressionTempVariableRef(variable=tmp_exit_variable, source_ref=source_ref), args=makeConstantRefNode(constant=(None, None, None), source_ref=source_ref), source_ref=with_exit_source_ref, ) # For "async with", await the entered value and exit value must be awaited. if not sync: enter_value = ExpressionYieldFromWaitable( expression=ExpressionAsyncWaitEnter(expression=enter_value, source_ref=source_ref), source_ref=source_ref, ) exit_value_exception = ExpressionYieldFromWaitable( expression=ExpressionAsyncWaitExit(expression=exit_value_exception, source_ref=source_ref), source_ref=source_ref, ) exit_value_no_exception = ExpressionYieldFromWaitable( ExpressionAsyncWaitExit(expression=exit_value_no_exception, source_ref=source_ref), source_ref=source_ref, ) statements = [ # First assign the with context to a temporary variable. StatementAssignmentVariable(variable=tmp_source_variable, source=with_source, source_ref=source_ref) ] attribute_assignments = [ # Next, assign "__enter__" and "__exit__" attributes to temporary # variables. StatementAssignmentVariable( variable=tmp_exit_variable, source=attribute_lookup_class( expression=ExpressionTempVariableRef( variable=tmp_source_variable, source_ref=source_ref), attribute_name="__exit__" if sync else "__aexit__", source_ref=source_ref, ), source_ref=source_ref, ), StatementAssignmentVariable(variable=tmp_enter_variable, source=enter_value, source_ref=source_ref), ] if python_version >= 360 and sync: attribute_assignments.reverse() statements += attribute_assignments statements.append( StatementAssignmentVariable( variable=tmp_indicator_variable, source=makeConstantRefNode(constant=True, source_ref=source_ref), source_ref=source_ref, )) statements += ( makeTryFinallyStatement( provider=provider, tried=makeTryExceptSingleHandlerNodeWithPublish( provider=provider, tried=with_body, exception_name="BaseException", handler_body=StatementsSequence( statements=( # Prevents final block from calling __exit__ as # well. StatementAssignmentVariable( variable=tmp_indicator_variable, source=makeConstantRefNode(constant=False, source_ref=source_ref), source_ref=source_ref, ), makeStatementConditional( condition=exit_value_exception, no_branch=makeReraiseExceptionStatement( source_ref=with_exit_source_ref), yes_branch=None, source_ref=with_exit_source_ref, ), ), source_ref=source_ref, ), public_exc=python_version >= 270, source_ref=source_ref, ), final=makeStatementConditional( condition=ExpressionComparisonIs( left=ExpressionTempVariableRef( variable=tmp_indicator_variable, source_ref=source_ref), right=makeConstantRefNode(constant=True, source_ref=source_ref), source_ref=source_ref, ), yes_branch=StatementExpressionOnly( expression=exit_value_no_exception, source_ref=source_ref), no_branch=None, source_ref=source_ref, ), source_ref=source_ref, ), ) return makeTryFinallyStatement( provider=provider, tried=statements, final=( StatementReleaseVariable(variable=tmp_source_variable, source_ref=with_exit_source_ref), StatementReleaseVariable(variable=tmp_enter_variable, source_ref=with_exit_source_ref), StatementReleaseVariable(variable=tmp_exit_variable, source_ref=with_exit_source_ref), ), source_ref=source_ref, )
def getNameSpacePathExpression(package, source_ref): """Create the __path__ expression for a package.""" reference_mode = Options.getFileReferenceMode() if reference_mode == "original": return makeConstantRefNode( constant=[package.getCompileTimeDirectory()], source_ref=source_ref, ) elif reference_mode == "frozen": return makeConstantRefNode( constant=[], source_ref=source_ref, ) else: elements = [ ExpressionCallNoKeywords( called=makeExpressionAttributeLookup( expression=makeExpressionImportModuleNameHard( module_name="os", import_name="path", source_ref=source_ref ), attribute_name="dirname", source_ref=source_ref, ), args=makeExpressionMakeTuple( elements=( ExpressionModuleAttributeFileRef( variable=package.getVariableForReference("__file__"), source_ref=source_ref, ), ), source_ref=source_ref, ), source_ref=source_ref, ) ] if package.canHaveExternalImports(): parts = package.getFullName().asString().split(".") for count in range(len(parts)): path_part = _makeCall( "os", "environ", "get", source_ref, makeConstantRefNode( constant="NUITKA_PACKAGE_%s" % "_".join(parts[: count + 1]), source_ref=source_ref, ), makeConstantRefNode(constant="/notexist", source_ref=source_ref), ) if parts[count + 1 :]: path_part = _makeCall( "os", "path", "join", source_ref, path_part, makeConstantRefNode( constant=os.path.join(*parts[count + 1 :]), source_ref=source_ref, ), ) elements.append(path_part) return makeExpressionMakeList(elements=elements, source_ref=source_ref)