Restoring authorship annotation for <shadchin@yandex-team.ru>. Commit 1 of 2.

1 files changed, 1045 insertions, 1045 deletions

diff --git a/contrib/python/Jinja2/py3/jinja2/compiler.py b/contrib/python/Jinja2/py3/jinja2/compiler.py
index 52fd5b83e20..a9e86395d8b 100644
--- a/contrib/python/Jinja2/py3/jinja2/compiler.py
+++ b/contrib/python/Jinja2/py3/jinja2/compiler.py
@@ -1,147 +1,147 @@
-"""Compiles nodes from the parser into Python code."""
-import typing as t
-from contextlib import contextmanager
-from functools import update_wrapper
-from io import StringIO
+"""Compiles nodes from the parser into Python code.""" 
+import typing as t 
+from contextlib import contextmanager 
+from functools import update_wrapper 
+from io import StringIO 
 from itertools import chain
 from keyword import iskeyword as is_python_keyword
 
-from markupsafe import escape
-from markupsafe import Markup
-
-from . import nodes
-from .exceptions import TemplateAssertionError
-from .idtracking import Symbols
-from .idtracking import VAR_LOAD_ALIAS
-from .idtracking import VAR_LOAD_PARAMETER
-from .idtracking import VAR_LOAD_RESOLVE
-from .idtracking import VAR_LOAD_UNDEFINED
-from .nodes import EvalContext
-from .optimizer import Optimizer
-from .utils import _PassArg
-from .utils import concat
-from .visitor import NodeVisitor
-
-if t.TYPE_CHECKING:
-    import typing_extensions as te
-    from .environment import Environment
-
-F = t.TypeVar("F", bound=t.Callable[..., t.Any])
-
+from markupsafe import escape 
+from markupsafe import Markup 
+
+from . import nodes 
+from .exceptions import TemplateAssertionError 
+from .idtracking import Symbols 
+from .idtracking import VAR_LOAD_ALIAS 
+from .idtracking import VAR_LOAD_PARAMETER 
+from .idtracking import VAR_LOAD_RESOLVE 
+from .idtracking import VAR_LOAD_UNDEFINED 
+from .nodes import EvalContext 
+from .optimizer import Optimizer 
+from .utils import _PassArg 
+from .utils import concat 
+from .visitor import NodeVisitor 
+ 
+if t.TYPE_CHECKING: 
+    import typing_extensions as te 
+    from .environment import Environment 
+ 
+F = t.TypeVar("F", bound=t.Callable[..., t.Any]) 
+ 
 operators = {
-    "eq": "==",
-    "ne": "!=",
-    "gt": ">",
-    "gteq": ">=",
-    "lt": "<",
-    "lteq": "<=",
-    "in": "in",
-    "notin": "not in",
+    "eq": "==", 
+    "ne": "!=", 
+    "gt": ">", 
+    "gteq": ">=", 
+    "lt": "<", 
+    "lteq": "<=", 
+    "in": "in", 
+    "notin": "not in", 
 }
 
 
-def optimizeconst(f: F) -> F:
-    def new_func(
-        self: "CodeGenerator", node: nodes.Expr, frame: "Frame", **kwargs: t.Any
-    ) -> t.Any:
+def optimizeconst(f: F) -> F: 
+    def new_func( 
+        self: "CodeGenerator", node: nodes.Expr, frame: "Frame", **kwargs: t.Any 
+    ) -> t.Any: 
         # Only optimize if the frame is not volatile
-        if self.optimizer is not None and not frame.eval_ctx.volatile:
+        if self.optimizer is not None and not frame.eval_ctx.volatile: 
             new_node = self.optimizer.visit(node, frame.eval_ctx)
-
+ 
             if new_node != node:
                 return self.visit(new_node, frame)
-
+ 
         return f(self, node, frame, **kwargs)
-
-    return update_wrapper(t.cast(F, new_func), f)
-
-
-def _make_binop(op: str) -> t.Callable[["CodeGenerator", nodes.BinExpr, "Frame"], None]:
-    @optimizeconst
-    def visitor(self: "CodeGenerator", node: nodes.BinExpr, frame: Frame) -> None:
-        if (
-            self.environment.sandboxed
-            and op in self.environment.intercepted_binops  # type: ignore
-        ):
-            self.write(f"environment.call_binop(context, {op!r}, ")
-            self.visit(node.left, frame)
-            self.write(", ")
-            self.visit(node.right, frame)
-        else:
-            self.write("(")
-            self.visit(node.left, frame)
-            self.write(f" {op} ")
-            self.visit(node.right, frame)
-
-        self.write(")")
-
-    return visitor
-
-
-def _make_unop(
-    op: str,
-) -> t.Callable[["CodeGenerator", nodes.UnaryExpr, "Frame"], None]:
-    @optimizeconst
-    def visitor(self: "CodeGenerator", node: nodes.UnaryExpr, frame: Frame) -> None:
-        if (
-            self.environment.sandboxed
-            and op in self.environment.intercepted_unops  # type: ignore
-        ):
-            self.write(f"environment.call_unop(context, {op!r}, ")
-            self.visit(node.node, frame)
-        else:
-            self.write("(" + op)
-            self.visit(node.node, frame)
-
-        self.write(")")
-
-    return visitor
-
-
-def generate(
-    node: nodes.Template,
-    environment: "Environment",
-    name: t.Optional[str],
-    filename: t.Optional[str],
-    stream: t.Optional[t.TextIO] = None,
-    defer_init: bool = False,
-    optimized: bool = True,
-) -> t.Optional[str]:
+ 
+    return update_wrapper(t.cast(F, new_func), f) 
+
+
+def _make_binop(op: str) -> t.Callable[["CodeGenerator", nodes.BinExpr, "Frame"], None]: 
+    @optimizeconst 
+    def visitor(self: "CodeGenerator", node: nodes.BinExpr, frame: Frame) -> None: 
+        if ( 
+            self.environment.sandboxed 
+            and op in self.environment.intercepted_binops  # type: ignore 
+        ): 
+            self.write(f"environment.call_binop(context, {op!r}, ") 
+            self.visit(node.left, frame) 
+            self.write(", ") 
+            self.visit(node.right, frame) 
+        else: 
+            self.write("(") 
+            self.visit(node.left, frame) 
+            self.write(f" {op} ") 
+            self.visit(node.right, frame) 
+ 
+        self.write(")") 
+ 
+    return visitor 
+ 
+ 
+def _make_unop( 
+    op: str, 
+) -> t.Callable[["CodeGenerator", nodes.UnaryExpr, "Frame"], None]: 
+    @optimizeconst 
+    def visitor(self: "CodeGenerator", node: nodes.UnaryExpr, frame: Frame) -> None: 
+        if ( 
+            self.environment.sandboxed 
+            and op in self.environment.intercepted_unops  # type: ignore 
+        ): 
+            self.write(f"environment.call_unop(context, {op!r}, ") 
+            self.visit(node.node, frame) 
+        else: 
+            self.write("(" + op) 
+            self.visit(node.node, frame) 
+ 
+        self.write(")") 
+ 
+    return visitor 
+ 
+ 
+def generate( 
+    node: nodes.Template, 
+    environment: "Environment", 
+    name: t.Optional[str], 
+    filename: t.Optional[str], 
+    stream: t.Optional[t.TextIO] = None, 
+    defer_init: bool = False, 
+    optimized: bool = True, 
+) -> t.Optional[str]: 
     """Generate the python source for a node tree."""
     if not isinstance(node, nodes.Template):
-        raise TypeError("Can't compile non template nodes")
-
-    generator = environment.code_generator_class(
-        environment, name, filename, stream, defer_init, optimized
-    )
+        raise TypeError("Can't compile non template nodes") 
+ 
+    generator = environment.code_generator_class( 
+        environment, name, filename, stream, defer_init, optimized 
+    ) 
     generator.visit(node)
-
+ 
     if stream is None:
-        return generator.stream.getvalue()  # type: ignore
+        return generator.stream.getvalue()  # type: ignore 
 
-    return None
+    return None 
 
-
-def has_safe_repr(value: t.Any) -> bool:
+ 
+def has_safe_repr(value: t.Any) -> bool: 
     """Does the node have a safe representation?"""
     if value is None or value is NotImplemented or value is Ellipsis:
         return True
-
-    if type(value) in {bool, int, float, complex, range, str, Markup}:
+ 
+    if type(value) in {bool, int, float, complex, range, str, Markup}: 
         return True
-
-    if type(value) in {tuple, list, set, frozenset}:
-        return all(has_safe_repr(v) for v in value)
-
-    if type(value) is dict:
-        return all(has_safe_repr(k) and has_safe_repr(v) for k, v in value.items())
-
+ 
+    if type(value) in {tuple, list, set, frozenset}: 
+        return all(has_safe_repr(v) for v in value) 
+ 
+    if type(value) is dict: 
+        return all(has_safe_repr(k) and has_safe_repr(v) for k, v in value.items()) 
+ 
     return False
 
 
-def find_undeclared(
-    nodes: t.Iterable[nodes.Node], names: t.Iterable[str]
-) -> t.Set[str]:
+def find_undeclared( 
+    nodes: t.Iterable[nodes.Node], names: t.Iterable[str] 
+) -> t.Set[str]: 
     """Check if the names passed are accessed undeclared.  The return value
     is a set of all the undeclared names from the sequence of names found.
     """
@@ -154,50 +154,50 @@ def find_undeclared(
     return visitor.undeclared
 
 
-class MacroRef:
-    def __init__(self, node: t.Union[nodes.Macro, nodes.CallBlock]) -> None:
+class MacroRef: 
+    def __init__(self, node: t.Union[nodes.Macro, nodes.CallBlock]) -> None: 
         self.node = node
         self.accesses_caller = False
         self.accesses_kwargs = False
         self.accesses_varargs = False
 
 
-class Frame:
+class Frame: 
     """Holds compile time information for us."""
 
-    def __init__(
-        self,
-        eval_ctx: EvalContext,
-        parent: t.Optional["Frame"] = None,
-        level: t.Optional[int] = None,
-    ) -> None:
+    def __init__( 
+        self, 
+        eval_ctx: EvalContext, 
+        parent: t.Optional["Frame"] = None, 
+        level: t.Optional[int] = None, 
+    ) -> None: 
         self.eval_ctx = eval_ctx
 
-        # the parent of this frame
-        self.parent = parent
-
-        if parent is None:
-            self.symbols = Symbols(level=level)
-
-            # in some dynamic inheritance situations the compiler needs to add
-            # write tests around output statements.
-            self.require_output_check = False
-
-            # inside some tags we are using a buffer rather than yield statements.
-            # this for example affects {% filter %} or {% macro %}.  If a frame
-            # is buffered this variable points to the name of the list used as
-            # buffer.
-            self.buffer: t.Optional[str] = None
-
-            # the name of the block we're in, otherwise None.
-            self.block: t.Optional[str] = None
-
-        else:
-            self.symbols = Symbols(parent.symbols, level=level)
-            self.require_output_check = parent.require_output_check
-            self.buffer = parent.buffer
-            self.block = parent.block
-
+        # the parent of this frame 
+        self.parent = parent 
+ 
+        if parent is None: 
+            self.symbols = Symbols(level=level) 
+ 
+            # in some dynamic inheritance situations the compiler needs to add 
+            # write tests around output statements. 
+            self.require_output_check = False 
+ 
+            # inside some tags we are using a buffer rather than yield statements. 
+            # this for example affects {% filter %} or {% macro %}.  If a frame 
+            # is buffered this variable points to the name of the list used as 
+            # buffer. 
+            self.buffer: t.Optional[str] = None 
+ 
+            # the name of the block we're in, otherwise None. 
+            self.block: t.Optional[str] = None 
+ 
+        else: 
+            self.symbols = Symbols(parent.symbols, level=level) 
+            self.require_output_check = parent.require_output_check 
+            self.buffer = parent.buffer 
+            self.block = parent.block 
+ 
         # a toplevel frame is the root + soft frames such as if conditions.
         self.toplevel = False
 
@@ -206,40 +206,40 @@ class Frame:
         # situations.
         self.rootlevel = False
 
-        # variables set inside of loops and blocks should not affect outer frames,
-        # but they still needs to be kept track of as part of the active context.
-        self.loop_frame = False
-        self.block_frame = False
+        # variables set inside of loops and blocks should not affect outer frames, 
+        # but they still needs to be kept track of as part of the active context. 
+        self.loop_frame = False 
+        self.block_frame = False 
 
-        # track whether the frame is being used in an if-statement or conditional
-        # expression as it determines which errors should be raised during runtime
-        # or compile time.
-        self.soft_frame = False
+        # track whether the frame is being used in an if-statement or conditional 
+        # expression as it determines which errors should be raised during runtime 
+        # or compile time. 
+        self.soft_frame = False 
 
-    def copy(self) -> "Frame":
+    def copy(self) -> "Frame": 
         """Create a copy of the current one."""
-        rv = t.cast(Frame, object.__new__(self.__class__))
+        rv = t.cast(Frame, object.__new__(self.__class__)) 
         rv.__dict__.update(self.__dict__)
         rv.symbols = self.symbols.copy()
         return rv
 
-    def inner(self, isolated: bool = False) -> "Frame":
+    def inner(self, isolated: bool = False) -> "Frame": 
         """Return an inner frame."""
         if isolated:
             return Frame(self.eval_ctx, level=self.symbols.level + 1)
         return Frame(self.eval_ctx, self)
 
-    def soft(self) -> "Frame":
+    def soft(self) -> "Frame": 
         """Return a soft frame.  A soft frame may not be modified as
         standalone thing as it shares the resources with the frame it
         was created of, but it's not a rootlevel frame any longer.
 
-        This is only used to implement if-statements and conditional
-        expressions.
+        This is only used to implement if-statements and conditional 
+        expressions. 
         """
         rv = self.copy()
         rv.rootlevel = False
-        rv.soft_frame = True
+        rv.soft_frame = True 
         return rv
 
     __copy__ = copy
@@ -252,19 +252,19 @@ class VisitorExit(RuntimeError):
 class DependencyFinderVisitor(NodeVisitor):
     """A visitor that collects filter and test calls."""
 
-    def __init__(self) -> None:
-        self.filters: t.Set[str] = set()
-        self.tests: t.Set[str] = set()
+    def __init__(self) -> None: 
+        self.filters: t.Set[str] = set() 
+        self.tests: t.Set[str] = set() 
 
-    def visit_Filter(self, node: nodes.Filter) -> None:
+    def visit_Filter(self, node: nodes.Filter) -> None: 
         self.generic_visit(node)
         self.filters.add(node.name)
 
-    def visit_Test(self, node: nodes.Test) -> None:
+    def visit_Test(self, node: nodes.Test) -> None: 
         self.generic_visit(node)
         self.tests.add(node.name)
 
-    def visit_Block(self, node: nodes.Block) -> None:
+    def visit_Block(self, node: nodes.Block) -> None: 
         """Stop visiting at blocks."""
 
 
@@ -274,19 +274,19 @@ class UndeclaredNameVisitor(NodeVisitor):
     not stop at closure frames.
     """
 
-    def __init__(self, names: t.Iterable[str]) -> None:
+    def __init__(self, names: t.Iterable[str]) -> None: 
         self.names = set(names)
-        self.undeclared: t.Set[str] = set()
+        self.undeclared: t.Set[str] = set() 
 
-    def visit_Name(self, node: nodes.Name) -> None:
-        if node.ctx == "load" and node.name in self.names:
+    def visit_Name(self, node: nodes.Name) -> None: 
+        if node.ctx == "load" and node.name in self.names: 
             self.undeclared.add(node.name)
             if self.undeclared == self.names:
                 raise VisitorExit()
         else:
             self.names.discard(node.name)
 
-    def visit_Block(self, node: nodes.Block) -> None:
+    def visit_Block(self, node: nodes.Block) -> None: 
         """Stop visiting a blocks."""
 
 
@@ -298,34 +298,34 @@ class CompilerExit(Exception):
 
 
 class CodeGenerator(NodeVisitor):
-    def __init__(
-        self,
-        environment: "Environment",
-        name: t.Optional[str],
-        filename: t.Optional[str],
-        stream: t.Optional[t.TextIO] = None,
-        defer_init: bool = False,
-        optimized: bool = True,
-    ) -> None:
+    def __init__( 
+        self, 
+        environment: "Environment", 
+        name: t.Optional[str], 
+        filename: t.Optional[str], 
+        stream: t.Optional[t.TextIO] = None, 
+        defer_init: bool = False, 
+        optimized: bool = True, 
+    ) -> None: 
         if stream is None:
-            stream = StringIO()
+            stream = StringIO() 
         self.environment = environment
         self.name = name
         self.filename = filename
         self.stream = stream
         self.created_block_context = False
         self.defer_init = defer_init
-        self.optimizer: t.Optional[Optimizer] = None
-
+        self.optimizer: t.Optional[Optimizer] = None 
+ 
         if optimized:
             self.optimizer = Optimizer(environment)
 
         # aliases for imports
-        self.import_aliases: t.Dict[str, str] = {}
+        self.import_aliases: t.Dict[str, str] = {} 
 
         # a registry for all blocks.  Because blocks are moved out
         # into the global python scope they are registered here
-        self.blocks: t.Dict[str, nodes.Block] = {}
+        self.blocks: t.Dict[str, nodes.Block] = {} 
 
         # the number of extends statements so far
         self.extends_so_far = 0
@@ -339,12 +339,12 @@ class CodeGenerator(NodeVisitor):
         self.code_lineno = 1
 
         # registry of all filters and tests (global, not block local)
-        self.tests: t.Dict[str, str] = {}
-        self.filters: t.Dict[str, str] = {}
+        self.tests: t.Dict[str, str] = {} 
+        self.filters: t.Dict[str, str] = {} 
 
         # the debug information
-        self.debug_info: t.List[t.Tuple[int, int]] = []
-        self._write_debug_info: t.Optional[int] = None
+        self.debug_info: t.List[t.Tuple[int, int]] = [] 
+        self._write_debug_info: t.Optional[int] = None 
 
         # the number of new lines before the next write()
         self._new_lines = 0
@@ -363,254 +363,254 @@ class CodeGenerator(NodeVisitor):
         self._indentation = 0
 
         # Tracks toplevel assignments
-        self._assign_stack: t.List[t.Set[str]] = []
+        self._assign_stack: t.List[t.Set[str]] = [] 
 
         # Tracks parameter definition blocks
-        self._param_def_block: t.List[t.Set[str]] = []
+        self._param_def_block: t.List[t.Set[str]] = [] 
 
         # Tracks the current context.
-        self._context_reference_stack = ["context"]
-
-    @property
-    def optimized(self) -> bool:
-        return self.optimizer is not None
+        self._context_reference_stack = ["context"] 
 
+    @property 
+    def optimized(self) -> bool: 
+        return self.optimizer is not None 
+ 
     # -- Various compilation helpers
 
-    def fail(self, msg: str, lineno: int) -> "te.NoReturn":
+    def fail(self, msg: str, lineno: int) -> "te.NoReturn": 
         """Fail with a :exc:`TemplateAssertionError`."""
         raise TemplateAssertionError(msg, lineno, self.name, self.filename)
 
-    def temporary_identifier(self) -> str:
+    def temporary_identifier(self) -> str: 
         """Get a new unique identifier."""
         self._last_identifier += 1
-        return f"t_{self._last_identifier}"
+        return f"t_{self._last_identifier}" 
 
-    def buffer(self, frame: Frame) -> None:
+    def buffer(self, frame: Frame) -> None: 
         """Enable buffering for the frame from that point onwards."""
         frame.buffer = self.temporary_identifier()
-        self.writeline(f"{frame.buffer} = []")
+        self.writeline(f"{frame.buffer} = []") 
 
-    def return_buffer_contents(
-        self, frame: Frame, force_unescaped: bool = False
-    ) -> None:
+    def return_buffer_contents( 
+        self, frame: Frame, force_unescaped: bool = False 
+    ) -> None: 
         """Return the buffer contents of the frame."""
         if not force_unescaped:
             if frame.eval_ctx.volatile:
-                self.writeline("if context.eval_ctx.autoescape:")
+                self.writeline("if context.eval_ctx.autoescape:") 
                 self.indent()
-                self.writeline(f"return Markup(concat({frame.buffer}))")
+                self.writeline(f"return Markup(concat({frame.buffer}))") 
                 self.outdent()
-                self.writeline("else:")
+                self.writeline("else:") 
                 self.indent()
-                self.writeline(f"return concat({frame.buffer})")
+                self.writeline(f"return concat({frame.buffer})") 
                 self.outdent()
                 return
             elif frame.eval_ctx.autoescape:
-                self.writeline(f"return Markup(concat({frame.buffer}))")
+                self.writeline(f"return Markup(concat({frame.buffer}))") 
                 return
-        self.writeline(f"return concat({frame.buffer})")
+        self.writeline(f"return concat({frame.buffer})") 
 
-    def indent(self) -> None:
+    def indent(self) -> None: 
         """Indent by one."""
         self._indentation += 1
 
-    def outdent(self, step: int = 1) -> None:
+    def outdent(self, step: int = 1) -> None: 
         """Outdent by step."""
         self._indentation -= step
 
-    def start_write(self, frame: Frame, node: t.Optional[nodes.Node] = None) -> None:
+    def start_write(self, frame: Frame, node: t.Optional[nodes.Node] = None) -> None: 
         """Yield or write into the frame buffer."""
         if frame.buffer is None:
-            self.writeline("yield ", node)
+            self.writeline("yield ", node) 
         else:
-            self.writeline(f"{frame.buffer}.append(", node)
+            self.writeline(f"{frame.buffer}.append(", node) 
 
-    def end_write(self, frame: Frame) -> None:
+    def end_write(self, frame: Frame) -> None: 
         """End the writing process started by `start_write`."""
         if frame.buffer is not None:
-            self.write(")")
+            self.write(")") 
 
-    def simple_write(
-        self, s: str, frame: Frame, node: t.Optional[nodes.Node] = None
-    ) -> None:
+    def simple_write( 
+        self, s: str, frame: Frame, node: t.Optional[nodes.Node] = None 
+    ) -> None: 
         """Simple shortcut for start_write + write + end_write."""
         self.start_write(frame, node)
         self.write(s)
         self.end_write(frame)
 
-    def blockvisit(self, nodes: t.Iterable[nodes.Node], frame: Frame) -> None:
+    def blockvisit(self, nodes: t.Iterable[nodes.Node], frame: Frame) -> None: 
         """Visit a list of nodes as block in a frame.  If the current frame
         is no buffer a dummy ``if 0: yield None`` is written automatically.
         """
         try:
-            self.writeline("pass")
+            self.writeline("pass") 
             for node in nodes:
                 self.visit(node, frame)
         except CompilerExit:
             pass
 
-    def write(self, x: str) -> None:
+    def write(self, x: str) -> None: 
         """Write a string into the output stream."""
         if self._new_lines:
             if not self._first_write:
-                self.stream.write("\n" * self._new_lines)
+                self.stream.write("\n" * self._new_lines) 
                 self.code_lineno += self._new_lines
                 if self._write_debug_info is not None:
-                    self.debug_info.append((self._write_debug_info, self.code_lineno))
+                    self.debug_info.append((self._write_debug_info, self.code_lineno)) 
                     self._write_debug_info = None
             self._first_write = False
-            self.stream.write("    " * self._indentation)
+            self.stream.write("    " * self._indentation) 
             self._new_lines = 0
         self.stream.write(x)
 
-    def writeline(
-        self, x: str, node: t.Optional[nodes.Node] = None, extra: int = 0
-    ) -> None:
+    def writeline( 
+        self, x: str, node: t.Optional[nodes.Node] = None, extra: int = 0 
+    ) -> None: 
         """Combination of newline and write."""
         self.newline(node, extra)
         self.write(x)
 
-    def newline(self, node: t.Optional[nodes.Node] = None, extra: int = 0) -> None:
+    def newline(self, node: t.Optional[nodes.Node] = None, extra: int = 0) -> None: 
         """Add one or more newlines before the next write."""
         self._new_lines = max(self._new_lines, 1 + extra)
         if node is not None and node.lineno != self._last_line:
             self._write_debug_info = node.lineno
             self._last_line = node.lineno
 
-    def signature(
-        self,
-        node: t.Union[nodes.Call, nodes.Filter, nodes.Test],
-        frame: Frame,
-        extra_kwargs: t.Optional[t.Mapping[str, t.Any]] = None,
-    ) -> None:
+    def signature( 
+        self, 
+        node: t.Union[nodes.Call, nodes.Filter, nodes.Test], 
+        frame: Frame, 
+        extra_kwargs: t.Optional[t.Mapping[str, t.Any]] = None, 
+    ) -> None: 
         """Writes a function call to the stream for the current node.
         A leading comma is added automatically.  The extra keyword
         arguments may not include python keywords otherwise a syntax
-        error could occur.  The extra keyword arguments should be given
+        error could occur.  The extra keyword arguments should be given 
         as python dict.
         """
         # if any of the given keyword arguments is a python keyword
         # we have to make sure that no invalid call is created.
-        kwarg_workaround = any(
-            is_python_keyword(t.cast(str, k))
-            for k in chain((x.key for x in node.kwargs), extra_kwargs or ())
-        )
+        kwarg_workaround = any( 
+            is_python_keyword(t.cast(str, k)) 
+            for k in chain((x.key for x in node.kwargs), extra_kwargs or ()) 
+        ) 
 
         for arg in node.args:
-            self.write(", ")
+            self.write(", ") 
             self.visit(arg, frame)
 
         if not kwarg_workaround:
             for kwarg in node.kwargs:
-                self.write(", ")
+                self.write(", ") 
                 self.visit(kwarg, frame)
             if extra_kwargs is not None:
-                for key, value in extra_kwargs.items():
-                    self.write(f", {key}={value}")
+                for key, value in extra_kwargs.items(): 
+                    self.write(f", {key}={value}") 
         if node.dyn_args:
-            self.write(", *")
+            self.write(", *") 
             self.visit(node.dyn_args, frame)
 
         if kwarg_workaround:
             if node.dyn_kwargs is not None:
-                self.write(", **dict({")
+                self.write(", **dict({") 
             else:
-                self.write(", **{")
+                self.write(", **{") 
             for kwarg in node.kwargs:
-                self.write(f"{kwarg.key!r}: ")
+                self.write(f"{kwarg.key!r}: ") 
                 self.visit(kwarg.value, frame)
-                self.write(", ")
+                self.write(", ") 
             if extra_kwargs is not None:
-                for key, value in extra_kwargs.items():
-                    self.write(f"{key!r}: {value}, ")
+                for key, value in extra_kwargs.items(): 
+                    self.write(f"{key!r}: {value}, ") 
             if node.dyn_kwargs is not None:
-                self.write("}, **")
+                self.write("}, **") 
                 self.visit(node.dyn_kwargs, frame)
-                self.write(")")
+                self.write(")") 
             else:
-                self.write("}")
+                self.write("}") 
 
         elif node.dyn_kwargs is not None:
-            self.write(", **")
+            self.write(", **") 
             self.visit(node.dyn_kwargs, frame)
 
-    def pull_dependencies(self, nodes: t.Iterable[nodes.Node]) -> None:
-        """Find all filter and test names used in the template and
-        assign them to variables in the compiled namespace. Checking
-        that the names are registered with the environment is done when
-        compiling the Filter and Test nodes. If the node is in an If or
-        CondExpr node, the check is done at runtime instead.
-
-        .. versionchanged:: 3.0
-            Filters and tests in If and CondExpr nodes are checked at
-            runtime instead of compile time.
-        """
+    def pull_dependencies(self, nodes: t.Iterable[nodes.Node]) -> None: 
+        """Find all filter and test names used in the template and 
+        assign them to variables in the compiled namespace. Checking 
+        that the names are registered with the environment is done when 
+        compiling the Filter and Test nodes. If the node is in an If or 
+        CondExpr node, the check is done at runtime instead. 
+ 
+        .. versionchanged:: 3.0 
+            Filters and tests in If and CondExpr nodes are checked at 
+            runtime instead of compile time. 
+        """ 
         visitor = DependencyFinderVisitor()
-
+ 
         for node in nodes:
             visitor.visit(node)
-
-        for id_map, names, dependency in (self.filters, visitor.filters, "filters"), (
-            self.tests,
-            visitor.tests,
-            "tests",
-        ):
-            for name in sorted(names):
-                if name not in id_map:
-                    id_map[name] = self.temporary_identifier()
-
-                # add check during runtime that dependencies used inside of executed
-                # blocks are defined, as this step may be skipped during compile time
-                self.writeline("try:")
-                self.indent()
-                self.writeline(f"{id_map[name]} = environment.{dependency}[{name!r}]")
-                self.outdent()
-                self.writeline("except KeyError:")
-                self.indent()
-                self.writeline("@internalcode")
-                self.writeline(f"def {id_map[name]}(*unused):")
-                self.indent()
-                self.writeline(
-                    f'raise TemplateRuntimeError("No {dependency[:-1]}'
-                    f' named {name!r} found.")'
-                )
-                self.outdent()
-                self.outdent()
-
-    def enter_frame(self, frame: Frame) -> None:
+ 
+        for id_map, names, dependency in (self.filters, visitor.filters, "filters"), ( 
+            self.tests, 
+            visitor.tests, 
+            "tests", 
+        ): 
+            for name in sorted(names): 
+                if name not in id_map: 
+                    id_map[name] = self.temporary_identifier() 
+ 
+                # add check during runtime that dependencies used inside of executed 
+                # blocks are defined, as this step may be skipped during compile time 
+                self.writeline("try:") 
+                self.indent() 
+                self.writeline(f"{id_map[name]} = environment.{dependency}[{name!r}]") 
+                self.outdent() 
+                self.writeline("except KeyError:") 
+                self.indent() 
+                self.writeline("@internalcode") 
+                self.writeline(f"def {id_map[name]}(*unused):") 
+                self.indent() 
+                self.writeline( 
+                    f'raise TemplateRuntimeError("No {dependency[:-1]}' 
+                    f' named {name!r} found.")' 
+                ) 
+                self.outdent() 
+                self.outdent() 
+
+    def enter_frame(self, frame: Frame) -> None: 
         undefs = []
-        for target, (action, param) in frame.symbols.loads.items():
+        for target, (action, param) in frame.symbols.loads.items(): 
             if action == VAR_LOAD_PARAMETER:
                 pass
             elif action == VAR_LOAD_RESOLVE:
-                self.writeline(f"{target} = {self.get_resolve_func()}({param!r})")
+                self.writeline(f"{target} = {self.get_resolve_func()}({param!r})") 
             elif action == VAR_LOAD_ALIAS:
-                self.writeline(f"{target} = {param}")
+                self.writeline(f"{target} = {param}") 
             elif action == VAR_LOAD_UNDEFINED:
                 undefs.append(target)
             else:
-                raise NotImplementedError("unknown load instruction")
+                raise NotImplementedError("unknown load instruction") 
         if undefs:
-            self.writeline(f"{' = '.join(undefs)} = missing")
+            self.writeline(f"{' = '.join(undefs)} = missing") 
 
-    def leave_frame(self, frame: Frame, with_python_scope: bool = False) -> None:
+    def leave_frame(self, frame: Frame, with_python_scope: bool = False) -> None: 
         if not with_python_scope:
             undefs = []
-            for target in frame.symbols.loads:
+            for target in frame.symbols.loads: 
                 undefs.append(target)
             if undefs:
-                self.writeline(f"{' = '.join(undefs)} = missing")
+                self.writeline(f"{' = '.join(undefs)} = missing") 
 
-    def choose_async(self, async_value: str = "async ", sync_value: str = "") -> str:
-        return async_value if self.environment.is_async else sync_value
+    def choose_async(self, async_value: str = "async ", sync_value: str = "") -> str: 
+        return async_value if self.environment.is_async else sync_value 
 
-    def func(self, name: str) -> str:
-        return f"{self.choose_async()}def {name}"
-
-    def macro_body(
-        self, node: t.Union[nodes.Macro, nodes.CallBlock], frame: Frame
-    ) -> t.Tuple[Frame, MacroRef]:
+    def func(self, name: str) -> str: 
+        return f"{self.choose_async()}def {name}" 
+ 
+    def macro_body( 
+        self, node: t.Union[nodes.Macro, nodes.CallBlock], frame: Frame 
+    ) -> t.Tuple[Frame, MacroRef]: 
         """Dump the function def of a macro or call block."""
         frame = frame.inner()
         frame.symbols.analyze_node(node)
@@ -619,18 +619,18 @@ class CodeGenerator(NodeVisitor):
         explicit_caller = None
         skip_special_params = set()
         args = []
-
+ 
         for idx, arg in enumerate(node.args):
-            if arg.name == "caller":
+            if arg.name == "caller": 
                 explicit_caller = idx
-            if arg.name in ("kwargs", "varargs"):
+            if arg.name in ("kwargs", "varargs"): 
                 skip_special_params.add(arg.name)
             args.append(frame.symbols.ref(arg.name))
 
-        undeclared = find_undeclared(node.body, ("caller", "kwargs", "varargs"))
+        undeclared = find_undeclared(node.body, ("caller", "kwargs", "varargs")) 
 
-        if "caller" in undeclared:
-            # In older Jinja versions there was a bug that allowed caller
+        if "caller" in undeclared: 
+            # In older Jinja versions there was a bug that allowed caller 
             # to retain the special behavior even if it was mentioned in
             # the argument list.  However thankfully this was only really
             # working if it was the last argument.  So we are explicitly
@@ -640,26 +640,26 @@ class CodeGenerator(NodeVisitor):
                 try:
                     node.defaults[explicit_caller - len(node.args)]
                 except IndexError:
-                    self.fail(
-                        "When defining macros or call blocks the "
-                        'special "caller" argument must be omitted '
-                        "or be given a default.",
-                        node.lineno,
-                    )
+                    self.fail( 
+                        "When defining macros or call blocks the " 
+                        'special "caller" argument must be omitted ' 
+                        "or be given a default.", 
+                        node.lineno, 
+                    ) 
             else:
-                args.append(frame.symbols.declare_parameter("caller"))
+                args.append(frame.symbols.declare_parameter("caller")) 
             macro_ref.accesses_caller = True
-        if "kwargs" in undeclared and "kwargs" not in skip_special_params:
-            args.append(frame.symbols.declare_parameter("kwargs"))
+        if "kwargs" in undeclared and "kwargs" not in skip_special_params: 
+            args.append(frame.symbols.declare_parameter("kwargs")) 
             macro_ref.accesses_kwargs = True
-        if "varargs" in undeclared and "varargs" not in skip_special_params:
-            args.append(frame.symbols.declare_parameter("varargs"))
+        if "varargs" in undeclared and "varargs" not in skip_special_params: 
+            args.append(frame.symbols.declare_parameter("varargs")) 
             macro_ref.accesses_varargs = True
 
         # macros are delayed, they never require output checks
         frame.require_output_check = False
         frame.symbols.analyze_node(node)
-        self.writeline(f"{self.func('macro')}({', '.join(args)}):", node)
+        self.writeline(f"{self.func('macro')}({', '.join(args)}):", node) 
         self.indent()
 
         self.buffer(frame)
@@ -668,17 +668,17 @@ class CodeGenerator(NodeVisitor):
         self.push_parameter_definitions(frame)
         for idx, arg in enumerate(node.args):
             ref = frame.symbols.ref(arg.name)
-            self.writeline(f"if {ref} is missing:")
+            self.writeline(f"if {ref} is missing:") 
             self.indent()
             try:
                 default = node.defaults[idx - len(node.args)]
             except IndexError:
-                self.writeline(
-                    f'{ref} = undefined("parameter {arg.name!r} was not provided",'
-                    f" name={arg.name!r})"
-                )
+                self.writeline( 
+                    f'{ref} = undefined("parameter {arg.name!r} was not provided",' 
+                    f" name={arg.name!r})" 
+                ) 
             else:
-                self.writeline(f"{ref} = ")
+                self.writeline(f"{ref} = ") 
                 self.visit(default, frame)
             self.mark_parameter_stored(ref)
             self.outdent()
@@ -691,45 +691,45 @@ class CodeGenerator(NodeVisitor):
 
         return frame, macro_ref
 
-    def macro_def(self, macro_ref: MacroRef, frame: Frame) -> None:
+    def macro_def(self, macro_ref: MacroRef, frame: Frame) -> None: 
         """Dump the macro definition for the def created by macro_body."""
-        arg_tuple = ", ".join(repr(x.name) for x in macro_ref.node.args)
-        name = getattr(macro_ref.node, "name", None)
+        arg_tuple = ", ".join(repr(x.name) for x in macro_ref.node.args) 
+        name = getattr(macro_ref.node, "name", None) 
         if len(macro_ref.node.args) == 1:
-            arg_tuple += ","
-        self.write(
-            f"Macro(environment, macro, {name!r}, ({arg_tuple}),"
-            f" {macro_ref.accesses_kwargs!r}, {macro_ref.accesses_varargs!r},"
-            f" {macro_ref.accesses_caller!r}, context.eval_ctx.autoescape)"
-        )
-
-    def position(self, node: nodes.Node) -> str:
+            arg_tuple += "," 
+        self.write( 
+            f"Macro(environment, macro, {name!r}, ({arg_tuple})," 
+            f" {macro_ref.accesses_kwargs!r}, {macro_ref.accesses_varargs!r}," 
+            f" {macro_ref.accesses_caller!r}, context.eval_ctx.autoescape)" 
+        ) 
+
+    def position(self, node: nodes.Node) -> str: 
         """Return a human readable position for the node."""
-        rv = f"line {node.lineno}"
+        rv = f"line {node.lineno}" 
         if self.name is not None:
-            rv = f"{rv} in {self.name!r}"
+            rv = f"{rv} in {self.name!r}" 
         return rv
 
-    def dump_local_context(self, frame: Frame) -> str:
-        items_kv = ", ".join(
-            f"{name!r}: {target}"
-            for name, target in frame.symbols.dump_stores().items()
-        )
-        return f"{{{items_kv}}}"
+    def dump_local_context(self, frame: Frame) -> str: 
+        items_kv = ", ".join( 
+            f"{name!r}: {target}" 
+            for name, target in frame.symbols.dump_stores().items() 
+        ) 
+        return f"{{{items_kv}}}" 
 
-    def write_commons(self) -> None:
+    def write_commons(self) -> None: 
         """Writes a common preamble that is used by root and block functions.
         Primarily this sets up common local helpers and enforces a generator
         through a dead branch.
         """
-        self.writeline("resolve = context.resolve_or_missing")
-        self.writeline("undefined = environment.undefined")
-        # always use the standard Undefined class for the implicit else of
-        # conditional expressions
-        self.writeline("cond_expr_undefined = Undefined")
-        self.writeline("if 0: yield None")
-
-    def push_parameter_definitions(self, frame: Frame) -> None:
+        self.writeline("resolve = context.resolve_or_missing") 
+        self.writeline("undefined = environment.undefined") 
+        # always use the standard Undefined class for the implicit else of 
+        # conditional expressions 
+        self.writeline("cond_expr_undefined = Undefined") 
+        self.writeline("if 0: yield None") 
+
+    def push_parameter_definitions(self, frame: Frame) -> None: 
         """Pushes all parameter targets from the given frame into a local
         stack that permits tracking of yet to be assigned parameters.  In
         particular this enables the optimization from `visit_Name` to skip
@@ -738,109 +738,109 @@ class CodeGenerator(NodeVisitor):
         """
         self._param_def_block.append(frame.symbols.dump_param_targets())
 
-    def pop_parameter_definitions(self) -> None:
+    def pop_parameter_definitions(self) -> None: 
         """Pops the current parameter definitions set."""
         self._param_def_block.pop()
 
-    def mark_parameter_stored(self, target: str) -> None:
+    def mark_parameter_stored(self, target: str) -> None: 
         """Marks a parameter in the current parameter definitions as stored.
         This will skip the enforced undefined checks.
         """
         if self._param_def_block:
             self._param_def_block[-1].discard(target)
 
-    def push_context_reference(self, target: str) -> None:
+    def push_context_reference(self, target: str) -> None: 
         self._context_reference_stack.append(target)
 
-    def pop_context_reference(self) -> None:
+    def pop_context_reference(self) -> None: 
         self._context_reference_stack.pop()
 
-    def get_context_ref(self) -> str:
+    def get_context_ref(self) -> str: 
         return self._context_reference_stack[-1]
 
-    def get_resolve_func(self) -> str:
+    def get_resolve_func(self) -> str: 
         target = self._context_reference_stack[-1]
-        if target == "context":
-            return "resolve"
-        return f"{target}.resolve"
+        if target == "context": 
+            return "resolve" 
+        return f"{target}.resolve" 
 
-    def derive_context(self, frame: Frame) -> str:
-        return f"{self.get_context_ref()}.derived({self.dump_local_context(frame)})"
+    def derive_context(self, frame: Frame) -> str: 
+        return f"{self.get_context_ref()}.derived({self.dump_local_context(frame)})" 
 
-    def parameter_is_undeclared(self, target: str) -> bool:
+    def parameter_is_undeclared(self, target: str) -> bool: 
         """Checks if a given target is an undeclared parameter."""
         if not self._param_def_block:
             return False
         return target in self._param_def_block[-1]
 
-    def push_assign_tracking(self) -> None:
+    def push_assign_tracking(self) -> None: 
         """Pushes a new layer for assignment tracking."""
         self._assign_stack.append(set())
 
-    def pop_assign_tracking(self, frame: Frame) -> None:
+    def pop_assign_tracking(self, frame: Frame) -> None: 
         """Pops the topmost level for assignment tracking and updates the
         context variables if necessary.
         """
         vars = self._assign_stack.pop()
-        if (
-            not frame.block_frame
-            and not frame.loop_frame
-            and not frame.toplevel
-            or not vars
-        ):
+        if ( 
+            not frame.block_frame 
+            and not frame.loop_frame 
+            and not frame.toplevel 
+            or not vars 
+        ): 
             return
-        public_names = [x for x in vars if x[:1] != "_"]
+        public_names = [x for x in vars if x[:1] != "_"] 
         if len(vars) == 1:
             name = next(iter(vars))
             ref = frame.symbols.ref(name)
-            if frame.loop_frame:
-                self.writeline(f"_loop_vars[{name!r}] = {ref}")
-                return
-            if frame.block_frame:
-                self.writeline(f"_block_vars[{name!r}] = {ref}")
-                return
-            self.writeline(f"context.vars[{name!r}] = {ref}")
+            if frame.loop_frame: 
+                self.writeline(f"_loop_vars[{name!r}] = {ref}") 
+                return 
+            if frame.block_frame: 
+                self.writeline(f"_block_vars[{name!r}] = {ref}") 
+                return 
+            self.writeline(f"context.vars[{name!r}] = {ref}") 
         else:
-            if frame.loop_frame:
-                self.writeline("_loop_vars.update({")
-            elif frame.block_frame:
-                self.writeline("_block_vars.update({")
-            else:
-                self.writeline("context.vars.update({")
+            if frame.loop_frame: 
+                self.writeline("_loop_vars.update({") 
+            elif frame.block_frame: 
+                self.writeline("_block_vars.update({") 
+            else: 
+                self.writeline("context.vars.update({") 
             for idx, name in enumerate(vars):
                 if idx:
-                    self.write(", ")
+                    self.write(", ") 
                 ref = frame.symbols.ref(name)
-                self.write(f"{name!r}: {ref}")
-            self.write("})")
-        if not frame.block_frame and not frame.loop_frame and public_names:
+                self.write(f"{name!r}: {ref}") 
+            self.write("})") 
+        if not frame.block_frame and not frame.loop_frame and public_names: 
             if len(public_names) == 1:
-                self.writeline(f"context.exported_vars.add({public_names[0]!r})")
+                self.writeline(f"context.exported_vars.add({public_names[0]!r})") 
             else:
-                names_str = ", ".join(map(repr, public_names))
-                self.writeline(f"context.exported_vars.update(({names_str}))")
+                names_str = ", ".join(map(repr, public_names)) 
+                self.writeline(f"context.exported_vars.update(({names_str}))") 
 
     # -- Statement Visitors
 
-    def visit_Template(
-        self, node: nodes.Template, frame: t.Optional[Frame] = None
-    ) -> None:
-        assert frame is None, "no root frame allowed"
+    def visit_Template( 
+        self, node: nodes.Template, frame: t.Optional[Frame] = None 
+    ) -> None: 
+        assert frame is None, "no root frame allowed" 
         eval_ctx = EvalContext(self.environment, self.name)
 
-        from .runtime import exported, async_exported
+        from .runtime import exported, async_exported 
 
         if self.environment.is_async:
-            exported_names = sorted(exported + async_exported)
-        else:
-            exported_names = sorted(exported)
-
-        self.writeline("from __future__ import generator_stop")  # Python < 3.7
-        self.writeline("from jinja2.runtime import " + ", ".join(exported_names))
+            exported_names = sorted(exported + async_exported) 
+        else: 
+            exported_names = sorted(exported) 
 
+        self.writeline("from __future__ import generator_stop")  # Python < 3.7 
+        self.writeline("from jinja2.runtime import " + ", ".join(exported_names)) 
+ 
         # if we want a deferred initialization we cannot move the
         # environment into a local name
-        envenv = "" if self.defer_init else ", environment=environment"
+        envenv = "" if self.defer_init else ", environment=environment" 
 
         # do we have an extends tag at all?  If not, we can save some
         # overhead by just not processing any inheritance code.
@@ -849,7 +849,7 @@ class CodeGenerator(NodeVisitor):
         # find all blocks
         for block in node.find_all(nodes.Block):
             if block.name in self.blocks:
-                self.fail(f"block {block.name!r} defined twice", block.lineno)
+                self.fail(f"block {block.name!r} defined twice", block.lineno) 
             self.blocks[block.name] = block
 
         # find all imports and import them
@@ -857,32 +857,32 @@ class CodeGenerator(NodeVisitor):
             if import_.importname not in self.import_aliases:
                 imp = import_.importname
                 self.import_aliases[imp] = alias = self.temporary_identifier()
-                if "." in imp:
-                    module, obj = imp.rsplit(".", 1)
-                    self.writeline(f"from {module} import {obj} as {alias}")
+                if "." in imp: 
+                    module, obj = imp.rsplit(".", 1) 
+                    self.writeline(f"from {module} import {obj} as {alias}") 
                 else:
-                    self.writeline(f"import {imp} as {alias}")
+                    self.writeline(f"import {imp} as {alias}") 
 
         # add the load name
-        self.writeline(f"name = {self.name!r}")
+        self.writeline(f"name = {self.name!r}") 
 
         # generate the root render function.
-        self.writeline(
-            f"{self.func('root')}(context, missing=missing{envenv}):", extra=1
-        )
+        self.writeline( 
+            f"{self.func('root')}(context, missing=missing{envenv}):", extra=1 
+        ) 
         self.indent()
         self.write_commons()
 
         # process the root
         frame = Frame(eval_ctx)
-        if "self" in find_undeclared(node.body, ("self",)):
-            ref = frame.symbols.declare_parameter("self")
-            self.writeline(f"{ref} = TemplateReference(context)")
+        if "self" in find_undeclared(node.body, ("self",)): 
+            ref = frame.symbols.declare_parameter("self") 
+            self.writeline(f"{ref} = TemplateReference(context)") 
         frame.symbols.analyze_node(node)
         frame.toplevel = frame.rootlevel = True
         frame.require_output_check = have_extends and not self.has_known_extends
         if have_extends:
-            self.writeline("parent_template = None")
+            self.writeline("parent_template = None") 
         self.enter_frame(frame)
         self.pull_dependencies(node.body)
         self.blockvisit(node.body, frame)
@@ -893,55 +893,55 @@ class CodeGenerator(NodeVisitor):
         if have_extends:
             if not self.has_known_extends:
                 self.indent()
-                self.writeline("if parent_template is not None:")
+                self.writeline("if parent_template is not None:") 
             self.indent()
-            if not self.environment.is_async:
-                self.writeline("yield from parent_template.root_render_func(context)")
+            if not self.environment.is_async: 
+                self.writeline("yield from parent_template.root_render_func(context)") 
             else:
-                self.writeline(
-                    "async for event in parent_template.root_render_func(context):"
-                )
+                self.writeline( 
+                    "async for event in parent_template.root_render_func(context):" 
+                ) 
                 self.indent()
-                self.writeline("yield event")
+                self.writeline("yield event") 
                 self.outdent()
             self.outdent(1 + (not self.has_known_extends))
 
         # at this point we now have the blocks collected and can visit them too.
-        for name, block in self.blocks.items():
-            self.writeline(
-                f"{self.func('block_' + name)}(context, missing=missing{envenv}):",
-                block,
-                1,
-            )
+        for name, block in self.blocks.items(): 
+            self.writeline( 
+                f"{self.func('block_' + name)}(context, missing=missing{envenv}):", 
+                block, 
+                1, 
+            ) 
             self.indent()
             self.write_commons()
             # It's important that we do not make this frame a child of the
             # toplevel template.  This would cause a variety of
             # interesting issues with identifier tracking.
             block_frame = Frame(eval_ctx)
-            block_frame.block_frame = True
-            undeclared = find_undeclared(block.body, ("self", "super"))
-            if "self" in undeclared:
-                ref = block_frame.symbols.declare_parameter("self")
-                self.writeline(f"{ref} = TemplateReference(context)")
-            if "super" in undeclared:
-                ref = block_frame.symbols.declare_parameter("super")
-                self.writeline(f"{ref} = context.super({name!r}, block_{name})")
+            block_frame.block_frame = True 
+            undeclared = find_undeclared(block.body, ("self", "super")) 
+            if "self" in undeclared: 
+                ref = block_frame.symbols.declare_parameter("self") 
+                self.writeline(f"{ref} = TemplateReference(context)") 
+            if "super" in undeclared: 
+                ref = block_frame.symbols.declare_parameter("super") 
+                self.writeline(f"{ref} = context.super({name!r}, block_{name})") 
             block_frame.symbols.analyze_node(block)
             block_frame.block = name
-            self.writeline("_block_vars = {}")
+            self.writeline("_block_vars = {}") 
             self.enter_frame(block_frame)
             self.pull_dependencies(block.body)
             self.blockvisit(block.body, block_frame)
             self.leave_frame(block_frame, with_python_scope=True)
             self.outdent()
 
-        blocks_kv_str = ", ".join(f"{x!r}: block_{x}" for x in self.blocks)
-        self.writeline(f"blocks = {{{blocks_kv_str}}}", extra=1)
-        debug_kv_str = "&".join(f"{k}={v}" for k, v in self.debug_info)
-        self.writeline(f"debug_info = {debug_kv_str!r}")
+        blocks_kv_str = ", ".join(f"{x!r}: block_{x}" for x in self.blocks) 
+        self.writeline(f"blocks = {{{blocks_kv_str}}}", extra=1) 
+        debug_kv_str = "&".join(f"{k}={v}" for k, v in self.debug_info) 
+        self.writeline(f"debug_info = {debug_kv_str!r}") 
 
-    def visit_Block(self, node: nodes.Block, frame: Frame) -> None:
+    def visit_Block(self, node: nodes.Block, frame: Frame) -> None: 
         """Call a block and register it for the template."""
         level = 0
         if frame.toplevel:
@@ -950,7 +950,7 @@ class CodeGenerator(NodeVisitor):
             if self.has_known_extends:
                 return
             if self.extends_so_far > 0:
-                self.writeline("if parent_template is None:")
+                self.writeline("if parent_template is None:") 
                 self.indent()
                 level += 1
 
@@ -959,35 +959,35 @@ class CodeGenerator(NodeVisitor):
         else:
             context = self.get_context_ref()
 
-        if node.required:
-            self.writeline(f"if len(context.blocks[{node.name!r}]) <= 1:", node)
-            self.indent()
-            self.writeline(
-                f'raise TemplateRuntimeError("Required block {node.name!r} not found")',
-                node,
-            )
-            self.outdent()
-
-        if not self.environment.is_async and frame.buffer is None:
-            self.writeline(
-                f"yield from context.blocks[{node.name!r}][0]({context})", node
-            )
+        if node.required: 
+            self.writeline(f"if len(context.blocks[{node.name!r}]) <= 1:", node) 
+            self.indent() 
+            self.writeline( 
+                f'raise TemplateRuntimeError("Required block {node.name!r} not found")', 
+                node, 
+            ) 
+            self.outdent() 
+ 
+        if not self.environment.is_async and frame.buffer is None: 
+            self.writeline( 
+                f"yield from context.blocks[{node.name!r}][0]({context})", node 
+            ) 
         else:
-            self.writeline(
-                f"{self.choose_async()}for event in"
-                f" context.blocks[{node.name!r}][0]({context}):",
-                node,
-            )
+            self.writeline( 
+                f"{self.choose_async()}for event in" 
+                f" context.blocks[{node.name!r}][0]({context}):", 
+                node, 
+            ) 
             self.indent()
-            self.simple_write("event", frame)
+            self.simple_write("event", frame) 
             self.outdent()
 
         self.outdent(level)
 
-    def visit_Extends(self, node: nodes.Extends, frame: Frame) -> None:
+    def visit_Extends(self, node: nodes.Extends, frame: Frame) -> None: 
         """Calls the extender."""
         if not frame.toplevel:
-            self.fail("cannot use extend from a non top-level scope", node.lineno)
+            self.fail("cannot use extend from a non top-level scope", node.lineno) 
 
         # if the number of extends statements in general is zero so
         # far, we don't have to add a check if something extended
@@ -999,9 +999,9 @@ class CodeGenerator(NodeVisitor):
             # time too, but i welcome it not to confuse users by throwing the
             # same error at different times just "because we can".
             if not self.has_known_extends:
-                self.writeline("if parent_template is not None:")
+                self.writeline("if parent_template is not None:") 
                 self.indent()
-            self.writeline('raise TemplateRuntimeError("extended multiple times")')
+            self.writeline('raise TemplateRuntimeError("extended multiple times")') 
 
             # if we have a known extends already we don't need that code here
             # as we know that the template execution will end here.
@@ -1010,12 +1010,12 @@ class CodeGenerator(NodeVisitor):
             else:
                 self.outdent()
 
-        self.writeline("parent_template = environment.get_template(", node)
+        self.writeline("parent_template = environment.get_template(", node) 
         self.visit(node.template, frame)
-        self.write(f", {self.name!r})")
-        self.writeline("for name, parent_block in parent_template.blocks.items():")
+        self.write(f", {self.name!r})") 
+        self.writeline("for name, parent_block in parent_template.blocks.items():") 
         self.indent()
-        self.writeline("context.blocks.setdefault(name, []).append(parent_block)")
+        self.writeline("context.blocks.setdefault(name, []).append(parent_block)") 
         self.outdent()
 
         # if this extends statement was in the root level we can take
@@ -1027,88 +1027,88 @@ class CodeGenerator(NodeVisitor):
         # and now we have one more
         self.extends_so_far += 1
 
-    def visit_Include(self, node: nodes.Include, frame: Frame) -> None:
+    def visit_Include(self, node: nodes.Include, frame: Frame) -> None: 
         """Handles includes."""
         if node.ignore_missing:
-            self.writeline("try:")
+            self.writeline("try:") 
             self.indent()
 
-        func_name = "get_or_select_template"
+        func_name = "get_or_select_template" 
         if isinstance(node.template, nodes.Const):
-            if isinstance(node.template.value, str):
-                func_name = "get_template"
+            if isinstance(node.template.value, str): 
+                func_name = "get_template" 
             elif isinstance(node.template.value, (tuple, list)):
-                func_name = "select_template"
+                func_name = "select_template" 
         elif isinstance(node.template, (nodes.Tuple, nodes.List)):
-            func_name = "select_template"
+            func_name = "select_template" 
 
-        self.writeline(f"template = environment.{func_name}(", node)
+        self.writeline(f"template = environment.{func_name}(", node) 
         self.visit(node.template, frame)
-        self.write(f", {self.name!r})")
+        self.write(f", {self.name!r})") 
         if node.ignore_missing:
             self.outdent()
-            self.writeline("except TemplateNotFound:")
+            self.writeline("except TemplateNotFound:") 
             self.indent()
-            self.writeline("pass")
+            self.writeline("pass") 
             self.outdent()
-            self.writeline("else:")
+            self.writeline("else:") 
             self.indent()
 
         skip_event_yield = False
         if node.with_context:
-            self.writeline(
-                f"{self.choose_async()}for event in template.root_render_func("
-                "template.new_context(context.get_all(), True,"
-                f" {self.dump_local_context(frame)})):"
-            )
+            self.writeline( 
+                f"{self.choose_async()}for event in template.root_render_func(" 
+                "template.new_context(context.get_all(), True," 
+                f" {self.dump_local_context(frame)})):" 
+            ) 
         elif self.environment.is_async:
-            self.writeline(
-                "for event in (await template._get_default_module_async())"
-                "._body_stream:"
-            )
+            self.writeline( 
+                "for event in (await template._get_default_module_async())" 
+                "._body_stream:" 
+            ) 
         else:
-            self.writeline("yield from template._get_default_module()._body_stream")
-            skip_event_yield = True
+            self.writeline("yield from template._get_default_module()._body_stream") 
+            skip_event_yield = True 
 
         if not skip_event_yield:
             self.indent()
-            self.simple_write("event", frame)
+            self.simple_write("event", frame) 
             self.outdent()
 
         if node.ignore_missing:
             self.outdent()
 
-    def _import_common(
-        self, node: t.Union[nodes.Import, nodes.FromImport], frame: Frame
-    ) -> None:
-        self.write(f"{self.choose_async('await ')}environment.get_template(")
+    def _import_common( 
+        self, node: t.Union[nodes.Import, nodes.FromImport], frame: Frame 
+    ) -> None: 
+        self.write(f"{self.choose_async('await ')}environment.get_template(") 
         self.visit(node.template, frame)
-        self.write(f", {self.name!r}).")
-
+        self.write(f", {self.name!r}).") 
+ 
         if node.with_context:
-            f_name = f"make_module{self.choose_async('_async')}"
-            self.write(
-                f"{f_name}(context.get_all(), True, {self.dump_local_context(frame)})"
-            )
+            f_name = f"make_module{self.choose_async('_async')}" 
+            self.write( 
+                f"{f_name}(context.get_all(), True, {self.dump_local_context(frame)})" 
+            ) 
         else:
-            self.write(f"_get_default_module{self.choose_async('_async')}(context)")
-
-    def visit_Import(self, node: nodes.Import, frame: Frame) -> None:
-        """Visit regular imports."""
-        self.writeline(f"{frame.symbols.ref(node.target)} = ", node)
-        if frame.toplevel:
-            self.write(f"context.vars[{node.target!r}] = ")
-
-        self._import_common(node, frame)
-
-        if frame.toplevel and not node.target.startswith("_"):
-            self.writeline(f"context.exported_vars.discard({node.target!r})")
-
-    def visit_FromImport(self, node: nodes.FromImport, frame: Frame) -> None:
+            self.write(f"_get_default_module{self.choose_async('_async')}(context)") 
+ 
+    def visit_Import(self, node: nodes.Import, frame: Frame) -> None: 
+        """Visit regular imports.""" 
+        self.writeline(f"{frame.symbols.ref(node.target)} = ", node) 
+        if frame.toplevel: 
+            self.write(f"context.vars[{node.target!r}] = ") 
+ 
+        self._import_common(node, frame) 
+ 
+        if frame.toplevel and not node.target.startswith("_"): 
+            self.writeline(f"context.exported_vars.discard({node.target!r})") 
+
+    def visit_FromImport(self, node: nodes.FromImport, frame: Frame) -> None: 
         """Visit named imports."""
         self.newline(node)
-        self.write("included_template = ")
-        self._import_common(node, frame)
+        self.write("included_template = ") 
+        self._import_common(node, frame) 
         var_names = []
         discarded_names = []
         for name in node.names:
@@ -1116,85 +1116,85 @@ class CodeGenerator(NodeVisitor):
                 name, alias = name
             else:
                 alias = name
-            self.writeline(
-                f"{frame.symbols.ref(alias)} ="
-                f" getattr(included_template, {name!r}, missing)"
-            )
-            self.writeline(f"if {frame.symbols.ref(alias)} is missing:")
+            self.writeline( 
+                f"{frame.symbols.ref(alias)} =" 
+                f" getattr(included_template, {name!r}, missing)" 
+            ) 
+            self.writeline(f"if {frame.symbols.ref(alias)} is missing:") 
             self.indent()
-            message = (
-                "the template {included_template.__name__!r}"
-                f" (imported on {self.position(node)})"
-                f" does not export the requested name {name!r}"
-            )
-            self.writeline(
-                f"{frame.symbols.ref(alias)} = undefined(f{message!r}, name={name!r})"
-            )
+            message = ( 
+                "the template {included_template.__name__!r}" 
+                f" (imported on {self.position(node)})" 
+                f" does not export the requested name {name!r}" 
+            ) 
+            self.writeline( 
+                f"{frame.symbols.ref(alias)} = undefined(f{message!r}, name={name!r})" 
+            ) 
             self.outdent()
             if frame.toplevel:
                 var_names.append(alias)
-                if not alias.startswith("_"):
+                if not alias.startswith("_"): 
                     discarded_names.append(alias)
 
         if var_names:
             if len(var_names) == 1:
                 name = var_names[0]
-                self.writeline(f"context.vars[{name!r}] = {frame.symbols.ref(name)}")
+                self.writeline(f"context.vars[{name!r}] = {frame.symbols.ref(name)}") 
             else:
-                names_kv = ", ".join(
-                    f"{name!r}: {frame.symbols.ref(name)}" for name in var_names
-                )
-                self.writeline(f"context.vars.update({{{names_kv}}})")
+                names_kv = ", ".join( 
+                    f"{name!r}: {frame.symbols.ref(name)}" for name in var_names 
+                ) 
+                self.writeline(f"context.vars.update({{{names_kv}}})") 
         if discarded_names:
             if len(discarded_names) == 1:
-                self.writeline(f"context.exported_vars.discard({discarded_names[0]!r})")
+                self.writeline(f"context.exported_vars.discard({discarded_names[0]!r})") 
             else:
-                names_str = ", ".join(map(repr, discarded_names))
-                self.writeline(
-                    f"context.exported_vars.difference_update(({names_str}))"
-                )
+                names_str = ", ".join(map(repr, discarded_names)) 
+                self.writeline( 
+                    f"context.exported_vars.difference_update(({names_str}))" 
+                ) 
 
-    def visit_For(self, node: nodes.For, frame: Frame) -> None:
+    def visit_For(self, node: nodes.For, frame: Frame) -> None: 
         loop_frame = frame.inner()
-        loop_frame.loop_frame = True
+        loop_frame.loop_frame = True 
         test_frame = frame.inner()
         else_frame = frame.inner()
 
         # try to figure out if we have an extended loop.  An extended loop
         # is necessary if the loop is in recursive mode if the special loop
-        # variable is accessed in the body if the body is a scoped block.
-        extended_loop = (
-            node.recursive
-            or "loop"
-            in find_undeclared(node.iter_child_nodes(only=("body",)), ("loop",))
-            or any(block.scoped for block in node.find_all(nodes.Block))
-        )
+        # variable is accessed in the body if the body is a scoped block. 
+        extended_loop = ( 
+            node.recursive 
+            or "loop" 
+            in find_undeclared(node.iter_child_nodes(only=("body",)), ("loop",)) 
+            or any(block.scoped for block in node.find_all(nodes.Block)) 
+        ) 
 
         loop_ref = None
         if extended_loop:
-            loop_ref = loop_frame.symbols.declare_parameter("loop")
+            loop_ref = loop_frame.symbols.declare_parameter("loop") 
 
-        loop_frame.symbols.analyze_node(node, for_branch="body")
+        loop_frame.symbols.analyze_node(node, for_branch="body") 
         if node.else_:
-            else_frame.symbols.analyze_node(node, for_branch="else")
+            else_frame.symbols.analyze_node(node, for_branch="else") 
 
         if node.test:
             loop_filter_func = self.temporary_identifier()
-            test_frame.symbols.analyze_node(node, for_branch="test")
-            self.writeline(f"{self.func(loop_filter_func)}(fiter):", node.test)
+            test_frame.symbols.analyze_node(node, for_branch="test") 
+            self.writeline(f"{self.func(loop_filter_func)}(fiter):", node.test) 
             self.indent()
             self.enter_frame(test_frame)
-            self.writeline(self.choose_async("async for ", "for "))
+            self.writeline(self.choose_async("async for ", "for ")) 
             self.visit(node.target, loop_frame)
-            self.write(" in ")
-            self.write(self.choose_async("auto_aiter(fiter)", "fiter"))
-            self.write(":")
+            self.write(" in ") 
+            self.write(self.choose_async("auto_aiter(fiter)", "fiter")) 
+            self.write(":") 
             self.indent()
-            self.writeline("if ", node.test)
+            self.writeline("if ", node.test) 
             self.visit(node.test, test_frame)
-            self.write(":")
+            self.write(":") 
             self.indent()
-            self.writeline("yield ")
+            self.writeline("yield ") 
             self.visit(node.target, loop_frame)
             self.outdent(3)
             self.leave_frame(test_frame, with_python_scope=True)
@@ -1203,9 +1203,9 @@ class CodeGenerator(NodeVisitor):
         # variables at that point.  Because loops can be nested but the loop
         # variable is a special one we have to enforce aliasing for it.
         if node.recursive:
-            self.writeline(
-                f"{self.func('loop')}(reciter, loop_render_func, depth=0):", node
-            )
+            self.writeline( 
+                f"{self.func('loop')}(reciter, loop_render_func, depth=0):", node 
+            ) 
             self.indent()
             self.buffer(loop_frame)
 
@@ -1215,58 +1215,58 @@ class CodeGenerator(NodeVisitor):
         # make sure the loop variable is a special one and raise a template
         # assertion error if a loop tries to write to loop
         if extended_loop:
-            self.writeline(f"{loop_ref} = missing")
+            self.writeline(f"{loop_ref} = missing") 
 
         for name in node.find_all(nodes.Name):
-            if name.ctx == "store" and name.name == "loop":
-                self.fail(
-                    "Can't assign to special loop variable in for-loop target",
-                    name.lineno,
-                )
+            if name.ctx == "store" and name.name == "loop": 
+                self.fail( 
+                    "Can't assign to special loop variable in for-loop target", 
+                    name.lineno, 
+                ) 
 
         if node.else_:
             iteration_indicator = self.temporary_identifier()
-            self.writeline(f"{iteration_indicator} = 1")
+            self.writeline(f"{iteration_indicator} = 1") 
 
-        self.writeline(self.choose_async("async for ", "for "), node)
+        self.writeline(self.choose_async("async for ", "for "), node) 
         self.visit(node.target, loop_frame)
         if extended_loop:
-            self.write(f", {loop_ref} in {self.choose_async('Async')}LoopContext(")
+            self.write(f", {loop_ref} in {self.choose_async('Async')}LoopContext(") 
         else:
-            self.write(" in ")
+            self.write(" in ") 
 
         if node.test:
-            self.write(f"{loop_filter_func}(")
+            self.write(f"{loop_filter_func}(") 
         if node.recursive:
-            self.write("reciter")
+            self.write("reciter") 
         else:
             if self.environment.is_async and not extended_loop:
-                self.write("auto_aiter(")
+                self.write("auto_aiter(") 
             self.visit(node.iter, frame)
             if self.environment.is_async and not extended_loop:
-                self.write(")")
+                self.write(")") 
         if node.test:
-            self.write(")")
+            self.write(")") 
 
         if node.recursive:
-            self.write(", undefined, loop_render_func, depth):")
+            self.write(", undefined, loop_render_func, depth):") 
         else:
-            self.write(", undefined):" if extended_loop else ":")
+            self.write(", undefined):" if extended_loop else ":") 
 
         self.indent()
         self.enter_frame(loop_frame)
 
-        self.writeline("_loop_vars = {}")
+        self.writeline("_loop_vars = {}") 
         self.blockvisit(node.body, loop_frame)
         if node.else_:
-            self.writeline(f"{iteration_indicator} = 0")
+            self.writeline(f"{iteration_indicator} = 0") 
         self.outdent()
-        self.leave_frame(
-            loop_frame, with_python_scope=node.recursive and not node.else_
-        )
+        self.leave_frame( 
+            loop_frame, with_python_scope=node.recursive and not node.else_ 
+        ) 
 
         if node.else_:
-            self.writeline(f"if {iteration_indicator}:")
+            self.writeline(f"if {iteration_indicator}:") 
             self.indent()
             self.enter_frame(else_frame)
             self.blockvisit(node.else_, else_frame)
@@ -1279,60 +1279,60 @@ class CodeGenerator(NodeVisitor):
             self.return_buffer_contents(loop_frame)
             self.outdent()
             self.start_write(frame, node)
-            self.write(f"{self.choose_async('await ')}loop(")
+            self.write(f"{self.choose_async('await ')}loop(") 
             if self.environment.is_async:
-                self.write("auto_aiter(")
+                self.write("auto_aiter(") 
             self.visit(node.iter, frame)
             if self.environment.is_async:
-                self.write(")")
-            self.write(", loop)")
+                self.write(")") 
+            self.write(", loop)") 
             self.end_write(frame)
 
-        # at the end of the iteration, clear any assignments made in the
-        # loop from the top level
-        if self._assign_stack:
-            self._assign_stack[-1].difference_update(loop_frame.symbols.stores)
-
-    def visit_If(self, node: nodes.If, frame: Frame) -> None:
+        # at the end of the iteration, clear any assignments made in the 
+        # loop from the top level 
+        if self._assign_stack: 
+            self._assign_stack[-1].difference_update(loop_frame.symbols.stores) 
+ 
+    def visit_If(self, node: nodes.If, frame: Frame) -> None: 
         if_frame = frame.soft()
-        self.writeline("if ", node)
+        self.writeline("if ", node) 
         self.visit(node.test, if_frame)
-        self.write(":")
+        self.write(":") 
         self.indent()
         self.blockvisit(node.body, if_frame)
         self.outdent()
         for elif_ in node.elif_:
-            self.writeline("elif ", elif_)
+            self.writeline("elif ", elif_) 
             self.visit(elif_.test, if_frame)
-            self.write(":")
+            self.write(":") 
             self.indent()
             self.blockvisit(elif_.body, if_frame)
             self.outdent()
         if node.else_:
-            self.writeline("else:")
+            self.writeline("else:") 
             self.indent()
             self.blockvisit(node.else_, if_frame)
             self.outdent()
 
-    def visit_Macro(self, node: nodes.Macro, frame: Frame) -> None:
+    def visit_Macro(self, node: nodes.Macro, frame: Frame) -> None: 
         macro_frame, macro_ref = self.macro_body(node, frame)
         self.newline()
         if frame.toplevel:
-            if not node.name.startswith("_"):
-                self.write(f"context.exported_vars.add({node.name!r})")
-            self.writeline(f"context.vars[{node.name!r}] = ")
-        self.write(f"{frame.symbols.ref(node.name)} = ")
+            if not node.name.startswith("_"): 
+                self.write(f"context.exported_vars.add({node.name!r})") 
+            self.writeline(f"context.vars[{node.name!r}] = ") 
+        self.write(f"{frame.symbols.ref(node.name)} = ") 
         self.macro_def(macro_ref, macro_frame)
 
-    def visit_CallBlock(self, node: nodes.CallBlock, frame: Frame) -> None:
+    def visit_CallBlock(self, node: nodes.CallBlock, frame: Frame) -> None: 
         call_frame, macro_ref = self.macro_body(node, frame)
-        self.writeline("caller = ")
+        self.writeline("caller = ") 
         self.macro_def(macro_ref, call_frame)
         self.start_write(frame, node)
         self.visit_Call(node.call, frame, forward_caller=True)
         self.end_write(frame)
 
-    def visit_FilterBlock(self, node: nodes.FilterBlock, frame: Frame) -> None:
+    def visit_FilterBlock(self, node: nodes.FilterBlock, frame: Frame) -> None: 
         filter_frame = frame.inner()
         filter_frame.symbols.analyze_node(node)
         self.enter_frame(filter_frame)
@@ -1343,227 +1343,227 @@ class CodeGenerator(NodeVisitor):
         self.end_write(frame)
         self.leave_frame(filter_frame)
 
-    def visit_With(self, node: nodes.With, frame: Frame) -> None:
+    def visit_With(self, node: nodes.With, frame: Frame) -> None: 
         with_frame = frame.inner()
         with_frame.symbols.analyze_node(node)
         self.enter_frame(with_frame)
-        for target, expr in zip(node.targets, node.values):
+        for target, expr in zip(node.targets, node.values): 
             self.newline()
             self.visit(target, with_frame)
-            self.write(" = ")
+            self.write(" = ") 
             self.visit(expr, frame)
         self.blockvisit(node.body, with_frame)
         self.leave_frame(with_frame)
 
-    def visit_ExprStmt(self, node: nodes.ExprStmt, frame: Frame) -> None:
+    def visit_ExprStmt(self, node: nodes.ExprStmt, frame: Frame) -> None: 
         self.newline(node)
         self.visit(node.node, frame)
 
-    class _FinalizeInfo(t.NamedTuple):
-        const: t.Optional[t.Callable[..., str]]
-        src: t.Optional[str]
-
-    @staticmethod
-    def _default_finalize(value: t.Any) -> t.Any:
-        """The default finalize function if the environment isn't
-        configured with one. Or, if the environment has one, this is
-        called on that function's output for constants.
-        """
-        return str(value)
-
-    _finalize: t.Optional[_FinalizeInfo] = None
-
-    def _make_finalize(self) -> _FinalizeInfo:
-        """Build the finalize function to be used on constants and at
-        runtime. Cached so it's only created once for all output nodes.
-
-        Returns a ``namedtuple`` with the following attributes:
-
-        ``const``
-            A function to finalize constant data at compile time.
-
-        ``src``
-            Source code to output around nodes to be evaluated at
-            runtime.
-        """
-        if self._finalize is not None:
-            return self._finalize
-
-        finalize: t.Optional[t.Callable[..., t.Any]]
-        finalize = default = self._default_finalize
-        src = None
-
+    class _FinalizeInfo(t.NamedTuple): 
+        const: t.Optional[t.Callable[..., str]] 
+        src: t.Optional[str] 
+
+    @staticmethod 
+    def _default_finalize(value: t.Any) -> t.Any: 
+        """The default finalize function if the environment isn't 
+        configured with one. Or, if the environment has one, this is 
+        called on that function's output for constants. 
+        """ 
+        return str(value) 
+ 
+    _finalize: t.Optional[_FinalizeInfo] = None 
+ 
+    def _make_finalize(self) -> _FinalizeInfo: 
+        """Build the finalize function to be used on constants and at 
+        runtime. Cached so it's only created once for all output nodes. 
+ 
+        Returns a ``namedtuple`` with the following attributes: 
+ 
+        ``const`` 
+            A function to finalize constant data at compile time. 
+ 
+        ``src`` 
+            Source code to output around nodes to be evaluated at 
+            runtime. 
+        """ 
+        if self._finalize is not None: 
+            return self._finalize 
+ 
+        finalize: t.Optional[t.Callable[..., t.Any]] 
+        finalize = default = self._default_finalize 
+        src = None 
+ 
         if self.environment.finalize:
-            src = "environment.finalize("
-            env_finalize = self.environment.finalize
-            pass_arg = {
-                _PassArg.context: "context",
-                _PassArg.eval_context: "context.eval_ctx",
-                _PassArg.environment: "environment",
-            }.get(
-                _PassArg.from_obj(env_finalize)  # type: ignore
-            )
-            finalize = None
-
-            if pass_arg is None:
-
-                def finalize(value: t.Any) -> t.Any:
-                    return default(env_finalize(value))
-
-            else:
-                src = f"{src}{pass_arg}, "
-
-                if pass_arg == "environment":
-
-                    def finalize(value: t.Any) -> t.Any:
-                        return default(env_finalize(self.environment, value))
-
-        self._finalize = self._FinalizeInfo(finalize, src)
-        return self._finalize
-
-    def _output_const_repr(self, group: t.Iterable[t.Any]) -> str:
-        """Given a group of constant values converted from ``Output``
-        child nodes, produce a string to write to the template module
-        source.
-        """
-        return repr(concat(group))
-
-    def _output_child_to_const(
-        self, node: nodes.Expr, frame: Frame, finalize: _FinalizeInfo
-    ) -> str:
-        """Try to optimize a child of an ``Output`` node by trying to
-        convert it to constant, finalized data at compile time.
-
-        If :exc:`Impossible` is raised, the node is not constant and
-        will be evaluated at runtime. Any other exception will also be
-        evaluated at runtime for easier debugging.
-        """
-        const = node.as_const(frame.eval_ctx)
-
-        if frame.eval_ctx.autoescape:
-            const = escape(const)
-
-        # Template data doesn't go through finalize.
-        if isinstance(node, nodes.TemplateData):
-            return str(const)
-
-        return finalize.const(const)  # type: ignore
-
-    def _output_child_pre(
-        self, node: nodes.Expr, frame: Frame, finalize: _FinalizeInfo
-    ) -> None:
-        """Output extra source code before visiting a child of an
-        ``Output`` node.
-        """
-        if frame.eval_ctx.volatile:
-            self.write("(escape if context.eval_ctx.autoescape else str)(")
-        elif frame.eval_ctx.autoescape:
-            self.write("escape(")
+            src = "environment.finalize(" 
+            env_finalize = self.environment.finalize 
+            pass_arg = { 
+                _PassArg.context: "context", 
+                _PassArg.eval_context: "context.eval_ctx", 
+                _PassArg.environment: "environment", 
+            }.get( 
+                _PassArg.from_obj(env_finalize)  # type: ignore 
+            ) 
+            finalize = None 
+ 
+            if pass_arg is None: 
+ 
+                def finalize(value: t.Any) -> t.Any: 
+                    return default(env_finalize(value)) 
+ 
+            else: 
+                src = f"{src}{pass_arg}, " 
+ 
+                if pass_arg == "environment": 
+ 
+                    def finalize(value: t.Any) -> t.Any: 
+                        return default(env_finalize(self.environment, value)) 
+ 
+        self._finalize = self._FinalizeInfo(finalize, src) 
+        return self._finalize 
+ 
+    def _output_const_repr(self, group: t.Iterable[t.Any]) -> str: 
+        """Given a group of constant values converted from ``Output`` 
+        child nodes, produce a string to write to the template module 
+        source. 
+        """ 
+        return repr(concat(group)) 
+ 
+    def _output_child_to_const( 
+        self, node: nodes.Expr, frame: Frame, finalize: _FinalizeInfo 
+    ) -> str: 
+        """Try to optimize a child of an ``Output`` node by trying to 
+        convert it to constant, finalized data at compile time. 
+ 
+        If :exc:`Impossible` is raised, the node is not constant and 
+        will be evaluated at runtime. Any other exception will also be 
+        evaluated at runtime for easier debugging. 
+        """ 
+        const = node.as_const(frame.eval_ctx) 
+ 
+        if frame.eval_ctx.autoescape: 
+            const = escape(const) 
+ 
+        # Template data doesn't go through finalize. 
+        if isinstance(node, nodes.TemplateData): 
+            return str(const) 
+ 
+        return finalize.const(const)  # type: ignore 
+ 
+    def _output_child_pre( 
+        self, node: nodes.Expr, frame: Frame, finalize: _FinalizeInfo 
+    ) -> None: 
+        """Output extra source code before visiting a child of an 
+        ``Output`` node. 
+        """ 
+        if frame.eval_ctx.volatile: 
+            self.write("(escape if context.eval_ctx.autoescape else str)(") 
+        elif frame.eval_ctx.autoescape: 
+            self.write("escape(") 
         else:
-            self.write("str(")
-
-        if finalize.src is not None:
-            self.write(finalize.src)
-
-    def _output_child_post(
-        self, node: nodes.Expr, frame: Frame, finalize: _FinalizeInfo
-    ) -> None:
-        """Output extra source code after visiting a child of an
-        ``Output`` node.
-        """
-        self.write(")")
-
-        if finalize.src is not None:
-            self.write(")")
-
-    def visit_Output(self, node: nodes.Output, frame: Frame) -> None:
-        # If an extends is active, don't render outside a block.
+            self.write("str(") 
+
+        if finalize.src is not None: 
+            self.write(finalize.src) 
+ 
+    def _output_child_post( 
+        self, node: nodes.Expr, frame: Frame, finalize: _FinalizeInfo 
+    ) -> None: 
+        """Output extra source code after visiting a child of an 
+        ``Output`` node. 
+        """ 
+        self.write(")") 
+ 
+        if finalize.src is not None: 
+            self.write(")") 
+ 
+    def visit_Output(self, node: nodes.Output, frame: Frame) -> None: 
+        # If an extends is active, don't render outside a block. 
         if frame.require_output_check:
-            # A top-level extends is known to exist at compile time.
-            if self.has_known_extends:
-                return
-
-            self.writeline("if parent_template is None:")
+            # A top-level extends is known to exist at compile time. 
+            if self.has_known_extends: 
+                return 
+ 
+            self.writeline("if parent_template is None:") 
             self.indent()
 
-        finalize = self._make_finalize()
-        body: t.List[t.Union[t.List[t.Any], nodes.Expr]] = []
-
-        # Evaluate constants at compile time if possible. Each item in
-        # body will be either a list of static data or a node to be
-        # evaluated at runtime.
+        finalize = self._make_finalize() 
+        body: t.List[t.Union[t.List[t.Any], nodes.Expr]] = [] 
+ 
+        # Evaluate constants at compile time if possible. Each item in 
+        # body will be either a list of static data or a node to be 
+        # evaluated at runtime. 
         for child in node.nodes:
             try:
-                if not (
-                    # If the finalize function requires runtime context,
-                    # constants can't be evaluated at compile time.
-                    finalize.const
-                    # Unless it's basic template data that won't be
-                    # finalized anyway.
-                    or isinstance(child, nodes.TemplateData)
-                ):
+                if not ( 
+                    # If the finalize function requires runtime context, 
+                    # constants can't be evaluated at compile time. 
+                    finalize.const 
+                    # Unless it's basic template data that won't be 
+                    # finalized anyway. 
+                    or isinstance(child, nodes.TemplateData) 
+                ): 
                     raise nodes.Impossible()
-
-                const = self._output_child_to_const(child, frame, finalize)
-            except (nodes.Impossible, Exception):
-                # The node was not constant and needs to be evaluated at
-                # runtime. Or another error was raised, which is easier
-                # to debug at runtime.
+ 
+                const = self._output_child_to_const(child, frame, finalize) 
+            except (nodes.Impossible, Exception): 
+                # The node was not constant and needs to be evaluated at 
+                # runtime. Or another error was raised, which is easier 
+                # to debug at runtime. 
                 body.append(child)
                 continue
-
+ 
             if body and isinstance(body[-1], list):
                 body[-1].append(const)
             else:
                 body.append([const])
 
-        if frame.buffer is not None:
-            if len(body) == 1:
-                self.writeline(f"{frame.buffer}.append(")
-            else:
-                self.writeline(f"{frame.buffer}.extend((")
-
-            self.indent()
-
-        for item in body:
-            if isinstance(item, list):
-                # A group of constant data to join and output.
-                val = self._output_const_repr(item)
-
-                if frame.buffer is None:
-                    self.writeline("yield " + val)
+        if frame.buffer is not None: 
+            if len(body) == 1: 
+                self.writeline(f"{frame.buffer}.append(") 
+            else: 
+                self.writeline(f"{frame.buffer}.extend((") 
+ 
+            self.indent() 
+ 
+        for item in body: 
+            if isinstance(item, list): 
+                # A group of constant data to join and output. 
+                val = self._output_const_repr(item) 
+ 
+                if frame.buffer is None: 
+                    self.writeline("yield " + val) 
                 else:
-                    self.writeline(val + ",")
-            else:
-                if frame.buffer is None:
-                    self.writeline("yield ", item)
+                    self.writeline(val + ",") 
+            else: 
+                if frame.buffer is None: 
+                    self.writeline("yield ", item) 
                 else:
-                    self.newline(item)
-
-                # A node to be evaluated at runtime.
-                self._output_child_pre(item, frame, finalize)
-                self.visit(item, frame)
-                self._output_child_post(item, frame, finalize)
-
-                if frame.buffer is not None:
-                    self.write(",")
-
-        if frame.buffer is not None:
+                    self.newline(item) 
+
+                # A node to be evaluated at runtime. 
+                self._output_child_pre(item, frame, finalize) 
+                self.visit(item, frame) 
+                self._output_child_post(item, frame, finalize) 
+ 
+                if frame.buffer is not None: 
+                    self.write(",") 
+ 
+        if frame.buffer is not None: 
             self.outdent()
-            self.writeline(")" if len(body) == 1 else "))")
+            self.writeline(")" if len(body) == 1 else "))") 
 
-        if frame.require_output_check:
+        if frame.require_output_check: 
             self.outdent()
 
-    def visit_Assign(self, node: nodes.Assign, frame: Frame) -> None:
+    def visit_Assign(self, node: nodes.Assign, frame: Frame) -> None: 
         self.push_assign_tracking()
         self.newline(node)
         self.visit(node.target, frame)
-        self.write(" = ")
+        self.write(" = ") 
         self.visit(node.node, frame)
         self.pop_assign_tracking(frame)
 
-    def visit_AssignBlock(self, node: nodes.AssignBlock, frame: Frame) -> None:
+    def visit_AssignBlock(self, node: nodes.AssignBlock, frame: Frame) -> None: 
         self.push_assign_tracking()
         block_frame = frame.inner()
         # This is a special case.  Since a set block always captures we
@@ -1576,21 +1576,21 @@ class CodeGenerator(NodeVisitor):
         self.blockvisit(node.body, block_frame)
         self.newline(node)
         self.visit(node.target, frame)
-        self.write(" = (Markup if context.eval_ctx.autoescape else identity)(")
+        self.write(" = (Markup if context.eval_ctx.autoescape else identity)(") 
         if node.filter is not None:
             self.visit_Filter(node.filter, block_frame)
         else:
-            self.write(f"concat({block_frame.buffer})")
-        self.write(")")
+            self.write(f"concat({block_frame.buffer})") 
+        self.write(")") 
         self.pop_assign_tracking(frame)
         self.leave_frame(block_frame)
 
     # -- Expression Visitors
 
-    def visit_Name(self, node: nodes.Name, frame: Frame) -> None:
-        if node.ctx == "store" and (
-            frame.toplevel or frame.loop_frame or frame.block_frame
-        ):
+    def visit_Name(self, node: nodes.Name, frame: Frame) -> None: 
+        if node.ctx == "store" and ( 
+            frame.toplevel or frame.loop_frame or frame.block_frame 
+        ): 
             if self._assign_stack:
                 self._assign_stack[-1].add(node.name)
         ref = frame.symbols.ref(node.name)
@@ -1598,329 +1598,329 @@ class CodeGenerator(NodeVisitor):
         # If we are looking up a variable we might have to deal with the
         # case where it's undefined.  We can skip that case if the load
         # instruction indicates a parameter which are always defined.
-        if node.ctx == "load":
+        if node.ctx == "load": 
             load = frame.symbols.find_load(ref)
-            if not (
-                load is not None
-                and load[0] == VAR_LOAD_PARAMETER
-                and not self.parameter_is_undeclared(ref)
-            ):
-                self.write(
-                    f"(undefined(name={node.name!r}) if {ref} is missing else {ref})"
-                )
+            if not ( 
+                load is not None 
+                and load[0] == VAR_LOAD_PARAMETER 
+                and not self.parameter_is_undeclared(ref) 
+            ): 
+                self.write( 
+                    f"(undefined(name={node.name!r}) if {ref} is missing else {ref})" 
+                ) 
                 return
 
         self.write(ref)
 
-    def visit_NSRef(self, node: nodes.NSRef, frame: Frame) -> None:
+    def visit_NSRef(self, node: nodes.NSRef, frame: Frame) -> None: 
         # NSRefs can only be used to store values; since they use the normal
         # `foo.bar` notation they will be parsed as a normal attribute access
         # when used anywhere but in a `set` context
         ref = frame.symbols.ref(node.name)
-        self.writeline(f"if not isinstance({ref}, Namespace):")
+        self.writeline(f"if not isinstance({ref}, Namespace):") 
         self.indent()
-        self.writeline(
-            "raise TemplateRuntimeError"
-            '("cannot assign attribute on non-namespace object")'
-        )
+        self.writeline( 
+            "raise TemplateRuntimeError" 
+            '("cannot assign attribute on non-namespace object")' 
+        ) 
         self.outdent()
-        self.writeline(f"{ref}[{node.attr!r}]")
+        self.writeline(f"{ref}[{node.attr!r}]") 
 
-    def visit_Const(self, node: nodes.Const, frame: Frame) -> None:
+    def visit_Const(self, node: nodes.Const, frame: Frame) -> None: 
         val = node.as_const(frame.eval_ctx)
         if isinstance(val, float):
             self.write(str(val))
         else:
             self.write(repr(val))
 
-    def visit_TemplateData(self, node: nodes.TemplateData, frame: Frame) -> None:
+    def visit_TemplateData(self, node: nodes.TemplateData, frame: Frame) -> None: 
         try:
             self.write(repr(node.as_const(frame.eval_ctx)))
         except nodes.Impossible:
-            self.write(
-                f"(Markup if context.eval_ctx.autoescape else identity)({node.data!r})"
-            )
+            self.write( 
+                f"(Markup if context.eval_ctx.autoescape else identity)({node.data!r})" 
+            ) 
 
-    def visit_Tuple(self, node: nodes.Tuple, frame: Frame) -> None:
-        self.write("(")
+    def visit_Tuple(self, node: nodes.Tuple, frame: Frame) -> None: 
+        self.write("(") 
         idx = -1
         for idx, item in enumerate(node.items):
             if idx:
-                self.write(", ")
+                self.write(", ") 
             self.visit(item, frame)
-        self.write(",)" if idx == 0 else ")")
+        self.write(",)" if idx == 0 else ")") 
 
-    def visit_List(self, node: nodes.List, frame: Frame) -> None:
-        self.write("[")
+    def visit_List(self, node: nodes.List, frame: Frame) -> None: 
+        self.write("[") 
         for idx, item in enumerate(node.items):
             if idx:
-                self.write(", ")
+                self.write(", ") 
             self.visit(item, frame)
-        self.write("]")
+        self.write("]") 
 
-    def visit_Dict(self, node: nodes.Dict, frame: Frame) -> None:
-        self.write("{")
+    def visit_Dict(self, node: nodes.Dict, frame: Frame) -> None: 
+        self.write("{") 
         for idx, item in enumerate(node.items):
             if idx:
-                self.write(", ")
+                self.write(", ") 
             self.visit(item.key, frame)
-            self.write(": ")
+            self.write(": ") 
             self.visit(item.value, frame)
-        self.write("}")
-
-    visit_Add = _make_binop("+")
-    visit_Sub = _make_binop("-")
-    visit_Mul = _make_binop("*")
-    visit_Div = _make_binop("/")
-    visit_FloorDiv = _make_binop("//")
-    visit_Pow = _make_binop("**")
-    visit_Mod = _make_binop("%")
-    visit_And = _make_binop("and")
-    visit_Or = _make_binop("or")
-    visit_Pos = _make_unop("+")
-    visit_Neg = _make_unop("-")
-    visit_Not = _make_unop("not ")
-
+        self.write("}") 
+
+    visit_Add = _make_binop("+") 
+    visit_Sub = _make_binop("-") 
+    visit_Mul = _make_binop("*") 
+    visit_Div = _make_binop("/") 
+    visit_FloorDiv = _make_binop("//") 
+    visit_Pow = _make_binop("**") 
+    visit_Mod = _make_binop("%") 
+    visit_And = _make_binop("and") 
+    visit_Or = _make_binop("or") 
+    visit_Pos = _make_unop("+") 
+    visit_Neg = _make_unop("-") 
+    visit_Not = _make_unop("not ") 
+ 
     @optimizeconst
-    def visit_Concat(self, node: nodes.Concat, frame: Frame) -> None:
+    def visit_Concat(self, node: nodes.Concat, frame: Frame) -> None: 
         if frame.eval_ctx.volatile:
-            func_name = "(markup_join if context.eval_ctx.volatile else str_join)"
+            func_name = "(markup_join if context.eval_ctx.volatile else str_join)" 
         elif frame.eval_ctx.autoescape:
-            func_name = "markup_join"
+            func_name = "markup_join" 
         else:
-            func_name = "str_join"
-        self.write(f"{func_name}((")
+            func_name = "str_join" 
+        self.write(f"{func_name}((") 
         for arg in node.nodes:
             self.visit(arg, frame)
-            self.write(", ")
-        self.write("))")
+            self.write(", ") 
+        self.write("))") 
 
     @optimizeconst
-    def visit_Compare(self, node: nodes.Compare, frame: Frame) -> None:
-        self.write("(")
+    def visit_Compare(self, node: nodes.Compare, frame: Frame) -> None: 
+        self.write("(") 
         self.visit(node.expr, frame)
         for op in node.ops:
             self.visit(op, frame)
-        self.write(")")
+        self.write(")") 
 
-    def visit_Operand(self, node: nodes.Operand, frame: Frame) -> None:
-        self.write(f" {operators[node.op]} ")
+    def visit_Operand(self, node: nodes.Operand, frame: Frame) -> None: 
+        self.write(f" {operators[node.op]} ") 
         self.visit(node.expr, frame)
 
     @optimizeconst
-    def visit_Getattr(self, node: nodes.Getattr, frame: Frame) -> None:
-        if self.environment.is_async:
-            self.write("(await auto_await(")
-
-        self.write("environment.getattr(")
+    def visit_Getattr(self, node: nodes.Getattr, frame: Frame) -> None: 
+        if self.environment.is_async: 
+            self.write("(await auto_await(") 
+ 
+        self.write("environment.getattr(") 
         self.visit(node.node, frame)
-        self.write(f", {node.attr!r})")
-
-        if self.environment.is_async:
-            self.write("))")
+        self.write(f", {node.attr!r})") 
 
+        if self.environment.is_async: 
+            self.write("))") 
+ 
     @optimizeconst
-    def visit_Getitem(self, node: nodes.Getitem, frame: Frame) -> None:
+    def visit_Getitem(self, node: nodes.Getitem, frame: Frame) -> None: 
         # slices bypass the environment getitem method.
         if isinstance(node.arg, nodes.Slice):
             self.visit(node.node, frame)
-            self.write("[")
+            self.write("[") 
             self.visit(node.arg, frame)
-            self.write("]")
+            self.write("]") 
         else:
-            if self.environment.is_async:
-                self.write("(await auto_await(")
-
-            self.write("environment.getitem(")
+            if self.environment.is_async: 
+                self.write("(await auto_await(") 
+ 
+            self.write("environment.getitem(") 
             self.visit(node.node, frame)
-            self.write(", ")
+            self.write(", ") 
             self.visit(node.arg, frame)
-            self.write(")")
-
-            if self.environment.is_async:
-                self.write("))")
+            self.write(")") 
 
-    def visit_Slice(self, node: nodes.Slice, frame: Frame) -> None:
+            if self.environment.is_async: 
+                self.write("))") 
+ 
+    def visit_Slice(self, node: nodes.Slice, frame: Frame) -> None: 
         if node.start is not None:
             self.visit(node.start, frame)
-        self.write(":")
+        self.write(":") 
         if node.stop is not None:
             self.visit(node.stop, frame)
         if node.step is not None:
-            self.write(":")
+            self.write(":") 
             self.visit(node.step, frame)
 
-    @contextmanager
-    def _filter_test_common(
-        self, node: t.Union[nodes.Filter, nodes.Test], frame: Frame, is_filter: bool
-    ) -> t.Iterator[None]:
+    @contextmanager 
+    def _filter_test_common( 
+        self, node: t.Union[nodes.Filter, nodes.Test], frame: Frame, is_filter: bool 
+    ) -> t.Iterator[None]: 
         if self.environment.is_async:
-            self.write("await auto_await(")
+            self.write("await auto_await(") 
 
-        if is_filter:
-            self.write(f"{self.filters[node.name]}(")
-            func = self.environment.filters.get(node.name)
+        if is_filter: 
+            self.write(f"{self.filters[node.name]}(") 
+            func = self.environment.filters.get(node.name) 
         else:
-            self.write(f"{self.tests[node.name]}(")
-            func = self.environment.tests.get(node.name)
-
-        # When inside an If or CondExpr frame, allow the filter to be
-        # undefined at compile time and only raise an error if it's
-        # actually called at runtime. See pull_dependencies.
-        if func is None and not frame.soft_frame:
-            type_name = "filter" if is_filter else "test"
-            self.fail(f"No {type_name} named {node.name!r}.", node.lineno)
-
-        pass_arg = {
-            _PassArg.context: "context",
-            _PassArg.eval_context: "context.eval_ctx",
-            _PassArg.environment: "environment",
-        }.get(
-            _PassArg.from_obj(func)  # type: ignore
-        )
-
-        if pass_arg is not None:
-            self.write(f"{pass_arg}, ")
-
-        # Back to the visitor function to handle visiting the target of
-        # the filter or test.
-        yield
-
+            self.write(f"{self.tests[node.name]}(") 
+            func = self.environment.tests.get(node.name) 
+ 
+        # When inside an If or CondExpr frame, allow the filter to be 
+        # undefined at compile time and only raise an error if it's 
+        # actually called at runtime. See pull_dependencies. 
+        if func is None and not frame.soft_frame: 
+            type_name = "filter" if is_filter else "test" 
+            self.fail(f"No {type_name} named {node.name!r}.", node.lineno) 
+ 
+        pass_arg = { 
+            _PassArg.context: "context", 
+            _PassArg.eval_context: "context.eval_ctx", 
+            _PassArg.environment: "environment", 
+        }.get( 
+            _PassArg.from_obj(func)  # type: ignore 
+        ) 
+ 
+        if pass_arg is not None: 
+            self.write(f"{pass_arg}, ") 
+ 
+        # Back to the visitor function to handle visiting the target of 
+        # the filter or test. 
+        yield 
+ 
         self.signature(node, frame)
-        self.write(")")
-
+        self.write(")") 
+ 
         if self.environment.is_async:
-            self.write(")")
+            self.write(")") 
 
     @optimizeconst
-    def visit_Filter(self, node: nodes.Filter, frame: Frame) -> None:
-        with self._filter_test_common(node, frame, True):
-            # if the filter node is None we are inside a filter block
-            # and want to write to the current buffer
-            if node.node is not None:
-                self.visit(node.node, frame)
-            elif frame.eval_ctx.volatile:
-                self.write(
-                    f"(Markup(concat({frame.buffer}))"
-                    f" if context.eval_ctx.autoescape else concat({frame.buffer}))"
-                )
-            elif frame.eval_ctx.autoescape:
-                self.write(f"Markup(concat({frame.buffer}))")
-            else:
-                self.write(f"concat({frame.buffer})")
+    def visit_Filter(self, node: nodes.Filter, frame: Frame) -> None: 
+        with self._filter_test_common(node, frame, True): 
+            # if the filter node is None we are inside a filter block 
+            # and want to write to the current buffer 
+            if node.node is not None: 
+                self.visit(node.node, frame) 
+            elif frame.eval_ctx.volatile: 
+                self.write( 
+                    f"(Markup(concat({frame.buffer}))" 
+                    f" if context.eval_ctx.autoescape else concat({frame.buffer}))" 
+                ) 
+            elif frame.eval_ctx.autoescape: 
+                self.write(f"Markup(concat({frame.buffer}))") 
+            else: 
+                self.write(f"concat({frame.buffer})") 
 
     @optimizeconst
-    def visit_Test(self, node: nodes.Test, frame: Frame) -> None:
-        with self._filter_test_common(node, frame, False):
-            self.visit(node.node, frame)
-
-    @optimizeconst
-    def visit_CondExpr(self, node: nodes.CondExpr, frame: Frame) -> None:
-        frame = frame.soft()
-
-        def write_expr2() -> None:
+    def visit_Test(self, node: nodes.Test, frame: Frame) -> None: 
+        with self._filter_test_common(node, frame, False): 
+            self.visit(node.node, frame) 
+ 
+    @optimizeconst 
+    def visit_CondExpr(self, node: nodes.CondExpr, frame: Frame) -> None: 
+        frame = frame.soft() 
+ 
+        def write_expr2() -> None: 
             if node.expr2 is not None:
-                self.visit(node.expr2, frame)
-                return
-
-            self.write(
-                f'cond_expr_undefined("the inline if-expression on'
-                f" {self.position(node)} evaluated to false and no else"
-                f' section was defined.")'
-            )
-
-        self.write("(")
+                self.visit(node.expr2, frame) 
+                return 
+ 
+            self.write( 
+                f'cond_expr_undefined("the inline if-expression on' 
+                f" {self.position(node)} evaluated to false and no else" 
+                f' section was defined.")' 
+            ) 
+
+        self.write("(") 
         self.visit(node.expr1, frame)
-        self.write(" if ")
+        self.write(" if ") 
         self.visit(node.test, frame)
-        self.write(" else ")
+        self.write(" else ") 
         write_expr2()
-        self.write(")")
+        self.write(")") 
 
     @optimizeconst
-    def visit_Call(
-        self, node: nodes.Call, frame: Frame, forward_caller: bool = False
-    ) -> None:
+    def visit_Call( 
+        self, node: nodes.Call, frame: Frame, forward_caller: bool = False 
+    ) -> None: 
         if self.environment.is_async:
-            self.write("await auto_await(")
+            self.write("await auto_await(") 
         if self.environment.sandboxed:
-            self.write("environment.call(context, ")
+            self.write("environment.call(context, ") 
         else:
-            self.write("context.call(")
+            self.write("context.call(") 
         self.visit(node.node, frame)
-        extra_kwargs = {"caller": "caller"} if forward_caller else None
-        loop_kwargs = {"_loop_vars": "_loop_vars"} if frame.loop_frame else {}
-        block_kwargs = {"_block_vars": "_block_vars"} if frame.block_frame else {}
-        if extra_kwargs:
-            extra_kwargs.update(loop_kwargs, **block_kwargs)
-        elif loop_kwargs or block_kwargs:
-            extra_kwargs = dict(loop_kwargs, **block_kwargs)
+        extra_kwargs = {"caller": "caller"} if forward_caller else None 
+        loop_kwargs = {"_loop_vars": "_loop_vars"} if frame.loop_frame else {} 
+        block_kwargs = {"_block_vars": "_block_vars"} if frame.block_frame else {} 
+        if extra_kwargs: 
+            extra_kwargs.update(loop_kwargs, **block_kwargs) 
+        elif loop_kwargs or block_kwargs: 
+            extra_kwargs = dict(loop_kwargs, **block_kwargs) 
         self.signature(node, frame, extra_kwargs)
-        self.write(")")
+        self.write(")") 
         if self.environment.is_async:
-            self.write(")")
+            self.write(")") 
 
-    def visit_Keyword(self, node: nodes.Keyword, frame: Frame) -> None:
-        self.write(node.key + "=")
+    def visit_Keyword(self, node: nodes.Keyword, frame: Frame) -> None: 
+        self.write(node.key + "=") 
         self.visit(node.value, frame)
 
     # -- Unused nodes for extensions
 
-    def visit_MarkSafe(self, node: nodes.MarkSafe, frame: Frame) -> None:
-        self.write("Markup(")
+    def visit_MarkSafe(self, node: nodes.MarkSafe, frame: Frame) -> None: 
+        self.write("Markup(") 
         self.visit(node.expr, frame)
-        self.write(")")
+        self.write(")") 
 
-    def visit_MarkSafeIfAutoescape(
-        self, node: nodes.MarkSafeIfAutoescape, frame: Frame
-    ) -> None:
-        self.write("(Markup if context.eval_ctx.autoescape else identity)(")
+    def visit_MarkSafeIfAutoescape( 
+        self, node: nodes.MarkSafeIfAutoescape, frame: Frame 
+    ) -> None: 
+        self.write("(Markup if context.eval_ctx.autoescape else identity)(") 
         self.visit(node.expr, frame)
-        self.write(")")
+        self.write(")") 
 
-    def visit_EnvironmentAttribute(
-        self, node: nodes.EnvironmentAttribute, frame: Frame
-    ) -> None:
-        self.write("environment." + node.name)
+    def visit_EnvironmentAttribute( 
+        self, node: nodes.EnvironmentAttribute, frame: Frame 
+    ) -> None: 
+        self.write("environment." + node.name) 
 
-    def visit_ExtensionAttribute(
-        self, node: nodes.ExtensionAttribute, frame: Frame
-    ) -> None:
-        self.write(f"environment.extensions[{node.identifier!r}].{node.name}")
+    def visit_ExtensionAttribute( 
+        self, node: nodes.ExtensionAttribute, frame: Frame 
+    ) -> None: 
+        self.write(f"environment.extensions[{node.identifier!r}].{node.name}") 
 
-    def visit_ImportedName(self, node: nodes.ImportedName, frame: Frame) -> None:
+    def visit_ImportedName(self, node: nodes.ImportedName, frame: Frame) -> None: 
         self.write(self.import_aliases[node.importname])
 
-    def visit_InternalName(self, node: nodes.InternalName, frame: Frame) -> None:
+    def visit_InternalName(self, node: nodes.InternalName, frame: Frame) -> None: 
         self.write(node.name)
 
-    def visit_ContextReference(
-        self, node: nodes.ContextReference, frame: Frame
-    ) -> None:
-        self.write("context")
-
-    def visit_DerivedContextReference(
-        self, node: nodes.DerivedContextReference, frame: Frame
-    ) -> None:
-        self.write(self.derive_context(frame))
+    def visit_ContextReference( 
+        self, node: nodes.ContextReference, frame: Frame 
+    ) -> None: 
+        self.write("context") 
 
-    def visit_Continue(self, node: nodes.Continue, frame: Frame) -> None:
-        self.writeline("continue", node)
+    def visit_DerivedContextReference( 
+        self, node: nodes.DerivedContextReference, frame: Frame 
+    ) -> None: 
+        self.write(self.derive_context(frame)) 
+ 
+    def visit_Continue(self, node: nodes.Continue, frame: Frame) -> None: 
+        self.writeline("continue", node) 
 
-    def visit_Break(self, node: nodes.Break, frame: Frame) -> None:
-        self.writeline("break", node)
+    def visit_Break(self, node: nodes.Break, frame: Frame) -> None: 
+        self.writeline("break", node) 
 
-    def visit_Scope(self, node: nodes.Scope, frame: Frame) -> None:
+    def visit_Scope(self, node: nodes.Scope, frame: Frame) -> None: 
         scope_frame = frame.inner()
         scope_frame.symbols.analyze_node(node)
         self.enter_frame(scope_frame)
         self.blockvisit(node.body, scope_frame)
         self.leave_frame(scope_frame)
 
-    def visit_OverlayScope(self, node: nodes.OverlayScope, frame: Frame) -> None:
+    def visit_OverlayScope(self, node: nodes.OverlayScope, frame: Frame) -> None: 
         ctx = self.temporary_identifier()
-        self.writeline(f"{ctx} = {self.derive_context(frame)}")
-        self.writeline(f"{ctx}.vars = ")
+        self.writeline(f"{ctx} = {self.derive_context(frame)}") 
+        self.writeline(f"{ctx}.vars = ") 
         self.visit(node.context, frame)
         self.push_context_reference(ctx)
 
@@ -1931,11 +1931,11 @@ class CodeGenerator(NodeVisitor):
         self.leave_frame(scope_frame)
         self.pop_context_reference()
 
-    def visit_EvalContextModifier(
-        self, node: nodes.EvalContextModifier, frame: Frame
-    ) -> None:
+    def visit_EvalContextModifier( 
+        self, node: nodes.EvalContextModifier, frame: Frame 
+    ) -> None: 
         for keyword in node.options:
-            self.writeline(f"context.eval_ctx.{keyword.key} = ")
+            self.writeline(f"context.eval_ctx.{keyword.key} = ") 
             self.visit(keyword.value, frame)
             try:
                 val = keyword.value.as_const(frame.eval_ctx)
@@ -1944,14 +1944,14 @@ class CodeGenerator(NodeVisitor):
             else:
                 setattr(frame.eval_ctx, keyword.key, val)
 
-    def visit_ScopedEvalContextModifier(
-        self, node: nodes.ScopedEvalContextModifier, frame: Frame
-    ) -> None:
+    def visit_ScopedEvalContextModifier( 
+        self, node: nodes.ScopedEvalContextModifier, frame: Frame 
+    ) -> None: 
         old_ctx_name = self.temporary_identifier()
         saved_ctx = frame.eval_ctx.save()
-        self.writeline(f"{old_ctx_name} = context.eval_ctx.save()")
+        self.writeline(f"{old_ctx_name} = context.eval_ctx.save()") 
         self.visit_EvalContextModifier(node, frame)
         for child in node.body:
             self.visit(child, frame)
         frame.eval_ctx.revert(saved_ctx)
-        self.writeline(f"context.eval_ctx.revert({old_ctx_name})")
+        self.writeline(f"context.eval_ctx.revert({old_ctx_name})")