| # Copyright 2006 Google, Inc. All Rights Reserved. |
| # Licensed to PSF under a Contributor Agreement. |
| """Export the Python grammar and symbols.""" |
| from .pgen2 import driver |
| _GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), "Grammar.txt") |
| _PATTERN_GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), |
| def __init__(self, grammar): |
| 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) |