diff options
Diffstat (limited to 'sphinx/pycode/pgen2/parse.py')
| -rw-r--r-- | sphinx/pycode/pgen2/parse.py | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/sphinx/pycode/pgen2/parse.py b/sphinx/pycode/pgen2/parse.py index 60eec05ea..660a47e68 100644 --- a/sphinx/pycode/pgen2/parse.py +++ b/sphinx/pycode/pgen2/parse.py @@ -13,6 +13,10 @@ how this parsing engine works. # Local imports from sphinx.pycode.pgen2 import token +if False: + # For type annotation + from typing import Any, List, Set, Tuple # NOQA + class ParseError(Exception): """Exception to signal the parser is stuck.""" @@ -104,11 +108,12 @@ class Parser(object): # Each stack entry is a tuple: (dfa, state, node). # A node is a tuple: (type, value, context, children), # where children is a list of nodes or None, and context may be None. - newnode = (start, None, None, []) + newnode = (start, None, None, []) # type: Tuple[unicode, unicode, unicode, List] stackentry = (self.grammar.dfas[start], 0, newnode) self.stack = [stackentry] - self.rootnode = None - self.used_names = set() # Aliased to self.rootnode.used_names in pop() + self.rootnode = None # type: Any + self.used_names = set() # type: Set[unicode] + # Aliased to self.rootnode.used_names in pop() def addtoken(self, type, value, context): """Add a token; return True iff this is the end of the program.""" @@ -175,7 +180,7 @@ class Parser(object): def shift(self, type, value, newstate, context): """Shift a token. (Internal)""" dfa, state, node = self.stack[-1] - newnode = (type, value, context, None) + newnode = (type, value, context, None) # type: Tuple[unicode, unicode, unicode, List] newnode = self.convert(self.grammar, newnode) if newnode is not None: node[-1].append(newnode) @@ -184,7 +189,7 @@ class Parser(object): def push(self, type, newdfa, newstate, context): """Push a nonterminal. (Internal)""" dfa, state, node = self.stack[-1] - newnode = (type, None, context, []) + newnode = (type, None, context, []) # type: Tuple[unicode, unicode, unicode, List] self.stack[-1] = (dfa, newstate, node) self.stack.append((newdfa, 0, newnode)) |