mirror of
https://github.com/Sneed-Group/Poodletooth-iLand
synced 2024-12-25 20:52:26 -06:00
41 lines
1.1 KiB
Python
41 lines
1.1 KiB
Python
|
# 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")
|
||
|
|
_PATTERN_GRAMMAR_FILE = os.path.join(os.path.dirname(__file__),
|
||
|
|
"PatternGrammar.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)
|
||
|
|
|
||
|
|
python_grammar_no_print_statement = python_grammar.copy()
|
||
|
|
del python_grammar_no_print_statement.keywords["print"]
|
||
|
|
|
||
|
|
pattern_grammar = driver.load_grammar(_PATTERN_GRAMMAR_FILE)
|
||
|
|
pattern_symbols = Symbols(pattern_grammar)
|