Remove unused internal code (#5041)

duriantaco · web-flow · commit c014b22a2d5e · 2026-03-11T08:53:00.000-07:00
diff --git a/src/black/mode.py b/src/black/mode.py
@@ -240,10 +240,6 @@ class Preview(Enum):
 }
 
 
-class Deprecated(UserWarning):
-    """Visible deprecation warning."""
-
-
 _MAX_CACHE_KEY_PART_LENGTH: Final = 32
 
 
diff --git a/src/black/nodes.py b/src/black/nodes.py
@@ -842,10 +842,6 @@ def is_parent_function_or_class(node: Node) -> bool:
     return node.parent.type in {syms.funcdef, syms.classdef}
 
 
-def is_function_or_class(node: Node) -> bool:
-    return node.type in {syms.funcdef, syms.classdef, syms.async_funcdef}
-
-
 def is_stub_suite(node: Node) -> bool:
     """Return True if `node` is a suite with a stub body."""
     if node.parent is not None and not is_parent_function_or_class(node):
diff --git a/src/black/parsing.py b/src/black/parsing.py
@@ -102,22 +102,6 @@ def lib2to3_parse(
     return result
 
 
-def matches_grammar(src_txt: str, grammar: Grammar) -> bool:
-    drv = driver.Driver(grammar)
-    try:
-        drv.parse_string(src_txt, False)
-    except (ParseError, TokenError, IndentationError):
-        return False
-    else:
-        return True
-
-
-def lib2to3_unparse(node: Node) -> str:
-    """Given a lib2to3 node, return its string representation."""
-    code = str(node)
-    return code
-
-
 class ASTSafetyError(Exception):
     """Raised when Black's generated code is not equivalent to the old AST."""
 

Original file line number	Diff line number	Diff line change
`@@ -240,10 +240,6 @@ class Preview(Enum):`
`240`	`240`	`}`
`241`	`241`
`242`	`242`
`243`		`-class Deprecated(UserWarning):`
`244`		`- """Visible deprecation warning."""`
`245`		`-`
`246`		`-`
`247`	`243`	`_MAX_CACHE_KEY_PART_LENGTH: Final = 32`
`248`	`244`
`249`	`245`