mypy.treetransform.TransformVisitor

class documentation

class TransformVisitor(NodeVisitor[Node]): (source)

Known subclasses: mypy.checker.TypeTransformVisitor, mypy.test.visitors.TypeAssertTransformVisitor

Transform a semantically analyzed AST (or subtree) to an identical copy.

Use the node() method to transform an AST node.

Subclass to perform a non-identity transform.

Notes:

This can only be used to transform functions or classes, not top-level statements, and/or modules as a whole.

Do not duplicate TypeInfo nodes. This would generally not be desirable.

Only update some name binding cross-references, but only those that refer to Var, Decorator or FuncDef nodes, not those targeting ClassDef or TypeInfo nodes.

Types are not transformed, but you can override type() to also perform type transformation.

TODO nested classes and functions have not been tested well enough

Method	`__init__`	Undocumented
Method	`block`	Undocumented
Method	`blocks`	Undocumented
Method	`copy_argument`	Undocumented
Method	`copy_function_attributes`	Undocumented
Method	`copy_ref`	Undocumented
Method	`duplicate_assignment`	Undocumented
Method	`duplicate_generator`	Undocumented
Method	`duplicate_name`	Undocumented
Method	`expr`	Undocumented
Method	`expressions`	Undocumented
Method	`mypyfile`	Undocumented
Method	`names`	Undocumented
Method	`node`	Undocumented
Method	`optional_block`	Undocumented
Method	`optional_expr`	Undocumented
Method	`optional_expressions`	Undocumented
Method	`optional_names`	Undocumented
Method	`optional_type`	Undocumented
Method	`statements`	Undocumented
Method	`stmt`	Undocumented
Method	`type`	Undocumented
Method	`types`	Undocumented
Method	`visit__promote_expr`	Undocumented
Method	`visit_assert_stmt`	Undocumented
Method	`visit_assignment_expr`	Undocumented
Method	`visit_assignment_stmt`	Undocumented
Method	`visit_await_expr`	Undocumented
Method	`visit_backquote_expr`	Undocumented
Method	`visit_block`	Undocumented
Method	`visit_break_stmt`	Undocumented
Method	`visit_bytes_expr`	Undocumented
Method	`visit_call_expr`	Undocumented
Method	`visit_cast_expr`	Undocumented
Method	`visit_class_def`	Undocumented
Method	`visit_comparison_expr`	Undocumented
Method	`visit_complex_expr`	Undocumented
Method	`visit_conditional_expr`	Undocumented
Method	`visit_continue_stmt`	Undocumented
Method	`visit_decorator`	Undocumented
Method	`visit_del_stmt`	Undocumented
Method	`visit_dict_expr`	Undocumented
Method	`visit_dictionary_comprehension`	Undocumented
Method	`visit_ellipsis`	Undocumented
Method	`visit_enum_call_expr`	Undocumented
Method	`visit_exec_stmt`	Undocumented
Method	`visit_expression_stmt`	Undocumented
Method	`visit_float_expr`	Undocumented
Method	`visit_for_stmt`	Undocumented
Method	`visit_func_def`	Undocumented
Method	`visit_generator_expr`	Undocumented
Method	`visit_global_decl`	Undocumented
Method	`visit_if_stmt`	Undocumented
Method	`visit_import`	Undocumented
Method	`visit_import_all`	Undocumented
Method	`visit_import_from`	Undocumented
Method	`visit_index_expr`	Undocumented
Method	`visit_int_expr`	Undocumented
Method	`visit_lambda_expr`	Undocumented
Method	`visit_list_comprehension`	Undocumented
Method	`visit_list_expr`	Undocumented
Method	`visit_member_expr`	Undocumented
Method	`visit_mypy_file`	Undocumented
Method	`visit_name_expr`	Undocumented
Method	`visit_namedtuple_expr`	Undocumented
Method	`visit_newtype_expr`	Undocumented
Method	`visit_nonlocal_decl`	Undocumented
Method	`visit_op_expr`	Undocumented
Method	`visit_operator_assignment_stmt`	Undocumented
Method	`visit_overloaded_func_def`	Undocumented
Method	`visit_paramspec_expr`	Undocumented
Method	`visit_pass_stmt`	Undocumented
Method	`visit_print_stmt`	Undocumented
Method	`visit_raise_stmt`	Undocumented
Method	`visit_return_stmt`	Undocumented
Method	`visit_reveal_expr`	Undocumented
Method	`visit_set_comprehension`	Undocumented
Method	`visit_set_expr`	Undocumented
Method	`visit_slice_expr`	Undocumented
Method	`visit_star_expr`	Undocumented
Method	`visit_str_expr`	Undocumented
Method	`visit_super_expr`	Undocumented
Method	`visit_temp_node`	Undocumented
Method	`visit_try_stmt`	Undocumented
Method	`visit_tuple_expr`	Undocumented
Method	`visit_type_alias_expr`	Undocumented
Method	`visit_type_application`	Undocumented
Method	`visit_type_var_expr`	Undocumented
Method	`visit_typeddict_expr`	Undocumented
Method	`visit_unary_expr`	Undocumented
Method	`visit_unicode_expr`	Undocumented
Method	`visit_var`	Undocumented
Method	`visit_while_stmt`	Undocumented
Method	`visit_with_stmt`	Undocumented
Method	`visit_yield_expr`	Undocumented
Method	`visit_yield_from_expr`	Undocumented
Instance Variable	`func_placeholder_map`	Undocumented
Instance Variable	`test_only`	Undocumented
Instance Variable	`var_map`	Undocumented

def __init__(self): (source)

overridden in mypy.checker.TypeTransformVisitor

Undocumented

def block(self, block): (source)

Undocumented

Parameters
block:`Block`	Undocumented
Returns
`Block`	Undocumented

def blocks(self, blocks): (source)

Undocumented

Parameters
blocks:`List[Block]`	Undocumented
Returns
`List[Block]`	Undocumented

def copy_argument(self, argument): (source)

Undocumented

Parameters
argument:`Argument`	Undocumented
Returns
`Argument`	Undocumented

def copy_function_attributes(self, new, original): (source)

Undocumented

Parameters
new:`FuncItem`	Undocumented
original:`FuncItem`	Undocumented

def copy_ref(self, new, original): (source)

Undocumented

Parameters
new:`RefExpr`	Undocumented
original:`RefExpr`	Undocumented

def duplicate_assignment(self, node): (source)

Undocumented

Parameters
node:`AssignmentStmt`	Undocumented
Returns
`AssignmentStmt`	Undocumented

def duplicate_generator(self, node): (source)

Undocumented

Parameters
node:`GeneratorExpr`	Undocumented
Returns
`GeneratorExpr`	Undocumented

def duplicate_name(self, node): (source)

Undocumented

Parameters
node:`NameExpr`	Undocumented
Returns
`NameExpr`	Undocumented

def expr(self, expr): (source)

Undocumented

Parameters
expr:`Expression`	Undocumented
Returns
`Expression`	Undocumented

def expressions(self, expressions): (source)

Undocumented

Parameters
expressions:`List[Expression]`	Undocumented
Returns
`List[Expression]`	Undocumented

def mypyfile(self, node): (source)

Undocumented

Parameters
node:`MypyFile`	Undocumented
Returns
`MypyFile`	Undocumented

def names(self, names): (source)

Undocumented

Parameters
names:`List[NameExpr]`	Undocumented
Returns
`List[NameExpr]`	Undocumented

def node(self, node): (source)

Undocumented

Parameters
node:`Node`	Undocumented
Returns
`Node`	Undocumented

def optional_block(self, block): (source)

Undocumented

Parameters
block:`Optional[Block]`	Undocumented
Returns
`Optional[Block]`	Undocumented

def optional_expr(self, expr): (source)

Undocumented

Parameters
expr:`Optional[Expression]`	Undocumented
Returns
`Optional[Expression]`	Undocumented

def optional_expressions(self, expressions): (source)

Undocumented

Parameters
expressions:`Iterable[Optional[Expression]]`	Undocumented
Returns
`List[Optional[Expression]]`	Undocumented

def optional_names(self, names): (source)

Undocumented

Parameters
names:`Iterable[Optional[NameExpr]]`	Undocumented
Returns
`List[Optional[NameExpr]]`	Undocumented

def optional_type(self, type): (source)

Undocumented

Parameters
type:`Optional[Type]`	Undocumented
Returns
`Optional[Type]`	Undocumented

def statements(self, statements): (source)

Undocumented

Parameters
statements:`List[Statement]`	Undocumented
Returns
`List[Statement]`	Undocumented

def stmt(self, stmt): (source)

Undocumented

Parameters
stmt:`Statement`	Undocumented
Returns
`Statement`	Undocumented

def type(self, type): (source)

overridden in mypy.checker.TypeTransformVisitor, mypy.test.visitors.TypeAssertTransformVisitor

Undocumented

Parameters
type:`Type`	Undocumented
Returns
`Type`	Undocumented

def types(self, types): (source)

Undocumented

Parameters
types:`List[Type]`	Undocumented
Returns
`List[Type]`	Undocumented

def visit__promote_expr(self, node): (source)

Undocumented

Parameters
node:`PromoteExpr`	Undocumented
Returns
`PromoteExpr`	Undocumented

def visit_assert_stmt(self, node): (source)

Undocumented

Parameters
node:`AssertStmt`	Undocumented
Returns
`AssertStmt`	Undocumented

def visit_assignment_expr(self, node): (source)

Undocumented

Parameters
node:`AssignmentExpr`	Undocumented
Returns
`AssignmentExpr`	Undocumented

def visit_assignment_stmt(self, node): (source)

Undocumented

Parameters
node:`AssignmentStmt`	Undocumented
Returns
`AssignmentStmt`	Undocumented

def visit_await_expr(self, node): (source)

Undocumented

Parameters
node:`AwaitExpr`	Undocumented
Returns
`AwaitExpr`	Undocumented

def visit_backquote_expr(self, node): (source)

Undocumented

Parameters
node:`BackquoteExpr`	Undocumented
Returns
`BackquoteExpr`	Undocumented

def visit_block(self, node): (source)

Undocumented

Parameters
node:`Block`	Undocumented
Returns
`Block`	Undocumented

def visit_break_stmt(self, node): (source)

Undocumented

Parameters
node:`BreakStmt`	Undocumented
Returns
`BreakStmt`	Undocumented

def visit_bytes_expr(self, node): (source)

Undocumented

Parameters
node:`BytesExpr`	Undocumented
Returns
`BytesExpr`	Undocumented

def visit_call_expr(self, node): (source)

Undocumented

Parameters
node:`CallExpr`	Undocumented
Returns
`CallExpr`	Undocumented

def visit_cast_expr(self, node): (source)

Undocumented

Parameters
node:`CastExpr`	Undocumented
Returns
`CastExpr`	Undocumented

def visit_class_def(self, node): (source)

Undocumented

Parameters
node:`ClassDef`	Undocumented
Returns
`ClassDef`	Undocumented

def visit_comparison_expr(self, node): (source)

Undocumented

Parameters
node:`ComparisonExpr`	Undocumented
Returns
`ComparisonExpr`	Undocumented

def visit_complex_expr(self, node): (source)

Undocumented

Parameters
node:`ComplexExpr`	Undocumented
Returns
`ComplexExpr`	Undocumented

def visit_conditional_expr(self, node): (source)

Undocumented

Parameters
node:`ConditionalExpr`	Undocumented
Returns
`ConditionalExpr`	Undocumented

def visit_continue_stmt(self, node): (source)

Undocumented

Parameters
node:`ContinueStmt`	Undocumented
Returns
`ContinueStmt`	Undocumented

def visit_decorator(self, node): (source)

Undocumented

Parameters
node:`Decorator`	Undocumented
Returns
`Decorator`	Undocumented

def visit_del_stmt(self, node): (source)

Undocumented

Parameters
node:`DelStmt`	Undocumented
Returns
`DelStmt`	Undocumented

def visit_dict_expr(self, node): (source)

Undocumented

Parameters
node:`DictExpr`	Undocumented
Returns
`DictExpr`	Undocumented

def visit_dictionary_comprehension(self, node): (source)

Undocumented

Parameters
node:`DictionaryComprehension`	Undocumented
Returns
`DictionaryComprehension`	Undocumented

def visit_ellipsis(self, node): (source)

Undocumented

Parameters
node:`EllipsisExpr`	Undocumented
Returns
`EllipsisExpr`	Undocumented

def visit_enum_call_expr(self, node): (source)

Undocumented

Parameters
node:`EnumCallExpr`	Undocumented
Returns
`EnumCallExpr`	Undocumented

def visit_exec_stmt(self, node): (source)

Undocumented

Parameters
node:`ExecStmt`	Undocumented
Returns
`ExecStmt`	Undocumented

def visit_expression_stmt(self, node): (source)

Undocumented

Parameters
node:`ExpressionStmt`	Undocumented
Returns
`ExpressionStmt`	Undocumented

def visit_float_expr(self, node): (source)

Undocumented

Parameters
node:`FloatExpr`	Undocumented
Returns
`FloatExpr`	Undocumented

def visit_for_stmt(self, node): (source)

Undocumented

Parameters
node:`ForStmt`	Undocumented
Returns
`ForStmt`	Undocumented

def visit_func_def(self, node): (source)

Undocumented

Parameters
node:`FuncDef`	Undocumented
Returns
`FuncDef`	Undocumented

def visit_generator_expr(self, node): (source)

Undocumented

Parameters
node:`GeneratorExpr`	Undocumented
Returns
`GeneratorExpr`	Undocumented

def visit_global_decl(self, node): (source)

Undocumented

Parameters
node:`GlobalDecl`	Undocumented
Returns
`GlobalDecl`	Undocumented

def visit_if_stmt(self, node): (source)

Undocumented

Parameters
node:`IfStmt`	Undocumented
Returns
`IfStmt`	Undocumented

def visit_import(self, node): (source)

Undocumented

Parameters
node:`Import`	Undocumented
Returns
`Import`	Undocumented

def visit_import_all(self, node): (source)

Undocumented

Parameters
node:`ImportAll`	Undocumented
Returns
`ImportAll`	Undocumented

def visit_import_from(self, node): (source)

Undocumented

Parameters
node:`ImportFrom`	Undocumented
Returns
`ImportFrom`	Undocumented

def visit_index_expr(self, node): (source)

Undocumented

Parameters
node:`IndexExpr`	Undocumented
Returns
`IndexExpr`	Undocumented

def visit_int_expr(self, node): (source)

Undocumented

Parameters
node:`IntExpr`	Undocumented
Returns
`IntExpr`	Undocumented

def visit_lambda_expr(self, node): (source)

Undocumented

Parameters
node:`LambdaExpr`	Undocumented
Returns
`LambdaExpr`	Undocumented

def visit_list_comprehension(self, node): (source)

Undocumented

Parameters
node:`ListComprehension`	Undocumented
Returns
`ListComprehension`	Undocumented

def visit_list_expr(self, node): (source)

Undocumented

Parameters
node:`ListExpr`	Undocumented
Returns
`ListExpr`	Undocumented

def visit_member_expr(self, node): (source)

Undocumented

Parameters
node:`MemberExpr`	Undocumented
Returns
`MemberExpr`	Undocumented

def visit_mypy_file(self, node): (source)

Undocumented

Parameters
node:`MypyFile`	Undocumented
Returns
`MypyFile`	Undocumented

def visit_name_expr(self, node): (source)

Undocumented

Parameters
node:`NameExpr`	Undocumented
Returns
`NameExpr`	Undocumented

def visit_namedtuple_expr(self, node): (source)

Undocumented

Parameters
node:`NamedTupleExpr`	Undocumented
Returns
`NamedTupleExpr`	Undocumented

def visit_newtype_expr(self, node): (source)

Undocumented

Parameters
node:`NewTypeExpr`	Undocumented
Returns
`NewTypeExpr`	Undocumented

def visit_nonlocal_decl(self, node): (source)

Undocumented

Parameters
node:`NonlocalDecl`	Undocumented
Returns
`NonlocalDecl`	Undocumented

def visit_op_expr(self, node): (source)

Undocumented

Parameters
node:`OpExpr`	Undocumented
Returns
`OpExpr`	Undocumented

def visit_operator_assignment_stmt(self, node): (source)

Undocumented

Parameters
node:`OperatorAssignmentStmt`	Undocumented
Returns
`OperatorAssignmentStmt`	Undocumented

def visit_overloaded_func_def(self, node): (source)

Undocumented

Parameters
node:`OverloadedFuncDef`	Undocumented
Returns
`OverloadedFuncDef`	Undocumented

def visit_paramspec_expr(self, node): (source)

Undocumented

Parameters
node:`ParamSpecExpr`	Undocumented
Returns
`ParamSpecExpr`	Undocumented

def visit_pass_stmt(self, node): (source)

Undocumented

Parameters
node:`PassStmt`	Undocumented
Returns
`PassStmt`	Undocumented

def visit_print_stmt(self, node): (source)

Undocumented

Parameters
node:`PrintStmt`	Undocumented
Returns
`PrintStmt`	Undocumented

def visit_raise_stmt(self, node): (source)

Undocumented

Parameters
node:`RaiseStmt`	Undocumented
Returns
`RaiseStmt`	Undocumented

def visit_return_stmt(self, node): (source)

Undocumented

Parameters
node:`ReturnStmt`	Undocumented
Returns
`ReturnStmt`	Undocumented

def visit_reveal_expr(self, node): (source)

Undocumented

Parameters
node:`RevealExpr`	Undocumented
Returns
`RevealExpr`	Undocumented

def visit_set_comprehension(self, node): (source)

Undocumented

Parameters
node:`SetComprehension`	Undocumented
Returns
`SetComprehension`	Undocumented

def visit_set_expr(self, node): (source)

Undocumented

Parameters
node:`SetExpr`	Undocumented
Returns
`SetExpr`	Undocumented

def visit_slice_expr(self, node): (source)

Undocumented

Parameters
node:`SliceExpr`	Undocumented
Returns
`SliceExpr`	Undocumented

def visit_star_expr(self, node): (source)

Undocumented

Parameters
node:`StarExpr`	Undocumented
Returns
`StarExpr`	Undocumented

def visit_str_expr(self, node): (source)

Undocumented

Parameters
node:`StrExpr`	Undocumented
Returns
`StrExpr`	Undocumented

def visit_super_expr(self, node): (source)

Undocumented

Parameters
node:`SuperExpr`	Undocumented
Returns
`SuperExpr`	Undocumented

def visit_temp_node(self, node): (source)

Undocumented

Parameters
node:`TempNode`	Undocumented
Returns
`TempNode`	Undocumented

def visit_try_stmt(self, node): (source)

Undocumented

Parameters
node:`TryStmt`	Undocumented
Returns
`TryStmt`	Undocumented

def visit_tuple_expr(self, node): (source)

Undocumented

Parameters
node:`TupleExpr`	Undocumented
Returns
`TupleExpr`	Undocumented

def visit_type_alias_expr(self, node): (source)

Undocumented

Parameters
node:`TypeAliasExpr`	Undocumented
Returns
`TypeAliasExpr`	Undocumented

def visit_type_application(self, node): (source)

Undocumented

Parameters
node:`TypeApplication`	Undocumented
Returns
`TypeApplication`	Undocumented

def visit_type_var_expr(self, node): (source)

Undocumented

Parameters
node:`TypeVarExpr`	Undocumented
Returns
`TypeVarExpr`	Undocumented

def visit_typeddict_expr(self, node): (source)

Undocumented

Parameters
node:`TypedDictExpr`	Undocumented
Returns
`Node`	Undocumented

def visit_unary_expr(self, node): (source)

Undocumented

Parameters
node:`UnaryExpr`	Undocumented
Returns
`UnaryExpr`	Undocumented

def visit_unicode_expr(self, node): (source)

Undocumented

Parameters
node:`UnicodeExpr`	Undocumented
Returns
`UnicodeExpr`	Undocumented

def visit_var(self, node): (source)

Undocumented

Parameters
node:`Var`	Undocumented
Returns
`Var`	Undocumented

def visit_while_stmt(self, node): (source)

Undocumented

Parameters
node:`WhileStmt`	Undocumented
Returns
`WhileStmt`	Undocumented

def visit_with_stmt(self, node): (source)

Undocumented

Parameters
node:`WithStmt`	Undocumented
Returns
`WithStmt`	Undocumented

def visit_yield_expr(self, node): (source)

Undocumented

Parameters
node:`YieldExpr`	Undocumented
Returns
`YieldExpr`	Undocumented

def visit_yield_from_expr(self, node): (source)

Undocumented

Parameters
node:`YieldFromExpr`	Undocumented
Returns
`YieldFromExpr`	Undocumented

func_placeholder_map: Dict[FuncDef, FuncDef] = (source)

Undocumented

test_only: bool = (source)

Undocumented

var_map: Dict[Var, Var] = (source)

Undocumented