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- # Copyright 2006 Google, Inc. All Rights Reserved.
- # Licensed to PSF under a Contributor Agreement.
-
- """Export the Python grammar and symbols."""
-
- # Python imports
- import os
-
- # Local imports
- from .pgen2 import token
- from .pgen2 import driver
- from . import pytree
-
- # The grammar file
- _GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), "Grammar.txt")
-
-
- class Symbols(object):
-
- def __init__(self, grammar):
- """Initializer.
-
- Creates an attribute for each grammar symbol (nonterminal),
- whose value is the symbol's type (an int >= 256).
- """
- for name, symbol in grammar.symbol2number.iteritems():
- setattr(self, name, symbol)
-
-
- python_grammar = driver.load_grammar(_GRAMMAR_FILE)
- python_symbols = Symbols(python_grammar)
-