diff options
Diffstat (limited to 'python/helpers/pydev/third_party/pep8/lib2to3/lib2to3/pygram.py')
-rw-r--r-- | python/helpers/pydev/third_party/pep8/lib2to3/lib2to3/pygram.py | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/python/helpers/pydev/third_party/pep8/lib2to3/lib2to3/pygram.py b/python/helpers/pydev/third_party/pep8/lib2to3/lib2to3/pygram.py new file mode 100644 index 000000000000..621ff24c9547 --- /dev/null +++ b/python/helpers/pydev/third_party/pep8/lib2to3/lib2to3/pygram.py @@ -0,0 +1,40 @@ +# 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) |