Mercurial > cpython-lru_cache-weakref

annotate Lib/lib2to3/pygram.py @ 54294:dba767bc3155 legacy-trunk

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remove mention of old ctypes version
author Benjamin Peterson <benjamin@python.org>
date Sat, 23 May 2009 20:59:09 +0000
parents 21d3357dcbec
children 732f72cbaf7d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
45906
302625fa6a2a Import lib2to3.
Martin v. Löwis <martin@v.loewis.de>
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1 # Copyright 2006 Google, Inc. All Rights Reserved.
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2 # Licensed to PSF under a Contributor Agreement.
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3
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4 """Export the Python grammar and symbols."""
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5
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6 # Python imports
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7 import os
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8
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9 # Local imports
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10 from .pgen2 import token
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11 from .pgen2 import driver
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12 from . import pytree
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13
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14 # The grammar file
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15 _GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), "Grammar.txt")
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16
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17
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18 class Symbols(object):
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19
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20 def __init__(self, grammar):
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21 """Initializer.
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22
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23 Creates an attribute for each grammar symbol (nonterminal),
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24 whose value is the symbol's type (an int >= 256).
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25 """
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26 for name, symbol in grammar.symbol2number.iteritems():
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27 setattr(self, name, symbol)
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28
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29
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30 python_grammar = driver.load_grammar(_GRAMMAR_FILE)
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31 python_symbols = Symbols(python_grammar)