There's also a pattern matching implementation here.
"""
-# mypy: allow-untyped-defs
+# mypy: allow-untyped-defs, allow-incomplete-defs
from typing import (
Any,
Dict,
+ Iterable,
Iterator,
List,
Optional,
- Text,
+ Set,
Tuple,
TypeVar,
Union,
- Set,
- Iterable,
)
+
from blib2to3.pgen2.grammar import Grammar
__author__ = "Guido van Rossum <guido@python.org>"
HUGE: int = 0x7FFFFFFF # maximum repeat count, default max
-_type_reprs: Dict[int, Union[Text, int]] = {}
+_type_reprs: Dict[int, Union[str, int]] = {}
-def type_repr(type_num: int) -> Union[Text, int]:
+def type_repr(type_num: int) -> Union[str, int]:
global _type_reprs
if not _type_reprs:
from .pygram import python_symbols
_P = TypeVar("_P", bound="Base")
NL = Union["Node", "Leaf"]
-Context = Tuple[Text, Tuple[int, int]]
-RawNode = Tuple[int, Optional[Text], Optional[Context], Optional[List[NL]]]
-
+Context = Tuple[str, Tuple[int, int]]
+RawNode = Tuple[int, Optional[str], Optional[Context], Optional[List[NL]]]
-class Base(object):
+class Base:
"""
Abstract base class for Node and Leaf.
return self._eq(other)
@property
- def prefix(self) -> Text:
+ def prefix(self) -> str:
raise NotImplementedError
def _eq(self: _P, other: _P) -> bool:
return 0
return 1 + self.parent.depth()
- def get_suffix(self) -> Text:
+ def get_suffix(self) -> str:
"""
Return the string immediately following the invocant node. This is
effectively equivalent to node.next_sibling.prefix
class Node(Base):
-
"""Concrete implementation for interior nodes."""
fixers_applied: Optional[List[Any]]
- used_names: Optional[Set[Text]]
+ used_names: Optional[Set[str]]
def __init__(
self,
type: int,
children: List[NL],
context: Optional[Any] = None,
- prefix: Optional[Text] = None,
+ prefix: Optional[str] = None,
fixers_applied: Optional[List[Any]] = None,
) -> None:
"""
else:
self.fixers_applied = None
- def __repr__(self) -> Text:
+ def __repr__(self) -> str:
"""Return a canonical string representation."""
assert self.type is not None
- return "%s(%s, %r)" % (
+ return "{}({}, {!r})".format(
self.__class__.__name__,
type_repr(self.type),
self.children,
)
- def __str__(self) -> Text:
+ def __str__(self) -> str:
"""
Return a pretty string representation.
"""
return "".join(map(str, self.children))
- def _eq(self, other) -> bool:
+ def _eq(self, other: Base) -> bool:
"""Compare two nodes for equality."""
return (self.type, self.children) == (other.type, other.children)
yield from child.pre_order()
@property
- def prefix(self) -> Text:
+ def prefix(self) -> str:
"""
The whitespace and comments preceding this node in the input.
"""
return self.children[0].prefix
@prefix.setter
- def prefix(self, prefix) -> None:
+ def prefix(self, prefix: str) -> None:
if self.children:
self.children[0].prefix = prefix
class Leaf(Base):
-
"""Concrete implementation for leaf nodes."""
# Default values for instance variables
- value: Text
+ value: str
fixers_applied: List[Any]
bracket_depth: int
# Changed later in brackets.py
opening_bracket: Optional["Leaf"] = None
- used_names: Optional[Set[Text]]
+ used_names: Optional[Set[str]]
_prefix = "" # Whitespace and comments preceding this token in the input
lineno: int = 0 # Line where this token starts in the input
column: int = 0 # Column where this token starts in the input
+ # If not None, this Leaf is created by converting a block of fmt off/skip
+ # code, and `fmt_pass_converted_first_leaf` points to the first Leaf in the
+ # converted code.
+ fmt_pass_converted_first_leaf: Optional["Leaf"] = None
def __init__(
self,
type: int,
- value: Text,
+ value: str,
context: Optional[Context] = None,
- prefix: Optional[Text] = None,
+ prefix: Optional[str] = None,
fixers_applied: List[Any] = [],
opening_bracket: Optional["Leaf"] = None,
+ fmt_pass_converted_first_leaf: Optional["Leaf"] = None,
) -> None:
"""
Initializer.
self.fixers_applied: Optional[List[Any]] = fixers_applied[:]
self.children = []
self.opening_bracket = opening_bracket
+ self.fmt_pass_converted_first_leaf = fmt_pass_converted_first_leaf
def __repr__(self) -> str:
"""Return a canonical string representation."""
from .pgen2.token import tok_name
assert self.type is not None
- return "%s(%s, %r)" % (
+ return "{}({}, {!r})".format(
self.__class__.__name__,
tok_name.get(self.type, self.type),
self.value,
)
- def __str__(self) -> Text:
+ def __str__(self) -> str:
"""
Return a pretty string representation.
"""
return self._prefix + str(self.value)
- def _eq(self, other) -> bool:
+ def _eq(self, other: "Leaf") -> bool:
"""Compare two nodes for equality."""
return (self.type, self.value) == (other.type, other.value)
yield self
@property
- def prefix(self) -> Text:
+ def prefix(self) -> str:
"""
The whitespace and comments preceding this token in the input.
"""
return self._prefix
@prefix.setter
- def prefix(self, prefix) -> None:
+ def prefix(self, prefix: str) -> None:
self.changed()
self._prefix = prefix
return Leaf(type, value or "", context=context)
-_Results = Dict[Text, NL]
-
+_Results = Dict[str, NL]
-class BasePattern(object):
+class BasePattern:
"""
A pattern is a tree matching pattern.
type: Optional[int]
type = None # Node type (token if < 256, symbol if >= 256)
content: Any = None # Optional content matching pattern
- name: Optional[Text] = None # Optional name used to store match in results dict
+ name: Optional[str] = None # Optional name used to store match in results dict
def __new__(cls, *args, **kwds):
"""Constructor that prevents BasePattern from being instantiated."""
assert cls is not BasePattern, "Cannot instantiate BasePattern"
return object.__new__(cls)
- def __repr__(self) -> Text:
+ def __repr__(self) -> str:
assert self.type is not None
args = [type_repr(self.type), self.content, self.name]
while args and args[-1] is None:
del args[-1]
- return "%s(%s)" % (self.__class__.__name__, ", ".join(map(repr, args)))
+ return "{}({})".format(self.__class__.__name__, ", ".join(map(repr, args)))
def _submatch(self, node, results=None) -> bool:
raise NotImplementedError
def __init__(
self,
type: Optional[int] = None,
- content: Optional[Text] = None,
- name: Optional[Text] = None,
+ content: Optional[str] = None,
+ name: Optional[str] = None,
) -> None:
"""
Initializer. Takes optional type, content, and name.
self.content = content
self.name = name
- def match(self, node: NL, results=None):
+ def match(self, node: NL, results=None) -> bool:
"""Override match() to insist on a leaf node."""
if not isinstance(node, Leaf):
return False
class NodePattern(BasePattern):
-
wildcards: bool = False
def __init__(
self,
type: Optional[int] = None,
- content: Optional[Iterable[Text]] = None,
- name: Optional[Text] = None,
+ content: Optional[Iterable[str]] = None,
+ name: Optional[str] = None,
) -> None:
"""
Initializer. Takes optional type, content, and name.
if isinstance(item, WildcardPattern): # type: ignore[unreachable]
self.wildcards = True # type: ignore[unreachable]
self.type = type
- self.content = newcontent
+ self.content = newcontent # TODO: this is unbound when content is None
self.name = name
def _submatch(self, node, results=None) -> bool:
class WildcardPattern(BasePattern):
-
"""
A wildcard pattern can match zero or more nodes.
def __init__(
self,
- content: Optional[Text] = None,
+ content: Optional[str] = None,
min: int = 0,
max: int = HUGE,
- name: Optional[Text] = None,
+ name: Optional[str] = None,
) -> None:
"""
Initializer.
class NegatedPattern(BasePattern):
- def __init__(self, content: Optional[Any] = None) -> None:
+ def __init__(self, content: Optional[BasePattern] = None) -> None:
"""
Initializer.
# We only match an empty sequence of nodes in its entirety
return len(nodes) == 0
- def generate_matches(self, nodes) -> Iterator[Tuple[int, _Results]]:
+ def generate_matches(self, nodes: List[NL]) -> Iterator[Tuple[int, _Results]]:
if self.content is None:
# Return a match if there is an empty sequence
if len(nodes) == 0:
projects / etc / vim.git / blobdiff