All patches and comments are welcome. Please squash your changes to logical
commits before using git-format-patch and git-send-email to
patches@git.madduck.net.
If you'd read over the Git project's submission guidelines and adhered to them,
I'd be especially grateful.
1 # Copyright 2006 Google, Inc. All Rights Reserved.
2 # Licensed to PSF under a Contributor Agreement.
4 """Export the Python grammar and symbols."""
8 from typing import Union
11 from .pgen2 import driver
12 from .pgen2.grammar import Grammar
14 # Moved into initialize because mypyc can't handle __file__ (XXX bug)
16 # _GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), "Grammar.txt")
17 # _PATTERN_GRAMMAR_FILE = os.path.join(os.path.dirname(__file__),
18 # "PatternGrammar.txt")
22 def __init__(self, grammar: Grammar) -> None:
25 Creates an attribute for each grammar symbol (nonterminal),
26 whose value is the symbol's type (an int >= 256).
28 for name, symbol in grammar.symbol2number.items():
29 setattr(self, name, symbol)
32 class _python_symbols(Symbols):
120 testlist_star_expr: int
145 class _pattern_symbols(Symbols):
155 python_grammar: Grammar
156 python_grammar_no_print_statement: Grammar
157 python_grammar_no_print_statement_no_exec_statement: Grammar
158 python_grammar_no_print_statement_no_exec_statement_async_keywords: Grammar
159 python_grammar_no_exec_statement: Grammar
160 pattern_grammar: Grammar
161 python_grammar_soft_keywords: Grammar
163 python_symbols: _python_symbols
164 pattern_symbols: _pattern_symbols
167 def initialize(cache_dir: Union[str, "os.PathLike[str]", None] = None) -> None:
168 global python_grammar
169 global python_grammar_no_print_statement
170 global python_grammar_no_print_statement_no_exec_statement
171 global python_grammar_no_print_statement_no_exec_statement_async_keywords
172 global python_grammar_soft_keywords
173 global python_symbols
174 global pattern_grammar
175 global pattern_symbols
178 _GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), "Grammar.txt")
179 _PATTERN_GRAMMAR_FILE = os.path.join(
180 os.path.dirname(__file__), "PatternGrammar.txt"
184 python_grammar = driver.load_packaged_grammar("blib2to3", _GRAMMAR_FILE, cache_dir)
185 python_grammar.version = (2, 0)
187 soft_keywords = python_grammar.soft_keywords.copy()
188 python_grammar.soft_keywords.clear()
190 python_symbols = _python_symbols(python_grammar)
192 # Python 2 + from __future__ import print_function
193 python_grammar_no_print_statement = python_grammar.copy()
194 del python_grammar_no_print_statement.keywords["print"]
197 python_grammar_no_print_statement_no_exec_statement = python_grammar.copy()
198 del python_grammar_no_print_statement_no_exec_statement.keywords["print"]
199 del python_grammar_no_print_statement_no_exec_statement.keywords["exec"]
200 python_grammar_no_print_statement_no_exec_statement.version = (3, 0)
203 python_grammar_no_print_statement_no_exec_statement_async_keywords = (
204 python_grammar_no_print_statement_no_exec_statement.copy()
206 python_grammar_no_print_statement_no_exec_statement_async_keywords.async_keywords = (
209 python_grammar_no_print_statement_no_exec_statement_async_keywords.version = (3, 7)
212 python_grammar_soft_keywords = (
213 python_grammar_no_print_statement_no_exec_statement_async_keywords.copy()
215 python_grammar_soft_keywords.soft_keywords = soft_keywords
216 python_grammar_soft_keywords.version = (3, 10)
218 pattern_grammar = driver.load_packaged_grammar(
219 "blib2to3", _PATTERN_GRAMMAR_FILE, cache_dir
221 pattern_symbols = _pattern_symbols(pattern_grammar)