You've already forked python-uncompyle6
mirror of
https://github.com/rocky/python-uncompyle6.git
synced 2025-08-03 00:45:53 +08:00
59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
# Copyright (c) 2016 Rocky Bernstein
|
|
"""
|
|
spark grammar differences over Python3 for Python 3.4.2.
|
|
"""
|
|
|
|
from uncompyle6.parser import PythonParserSingle
|
|
from spark_parser import DEFAULT_DEBUG as PARSER_DEFAULT_DEBUG
|
|
from uncompyle6.parsers.parse3 import Python3Parser
|
|
|
|
class Python34Parser(Python3Parser):
|
|
|
|
def __init__(self, debug_parser=PARSER_DEFAULT_DEBUG):
|
|
super(Python34Parser, self).__init__(debug_parser)
|
|
self.customized = {}
|
|
|
|
def p_misc34(self, args):
|
|
"""
|
|
# Python 3.5+ optimizes the trailing two JUMPS away
|
|
|
|
for_block ::= l_stmts
|
|
|
|
iflaststmtl ::= testexpr c_stmts_opt
|
|
|
|
_ifstmts_jump ::= c_stmts_opt JUMP_FORWARD _come_from
|
|
|
|
# We do the grammar hackery below for semantics
|
|
# actions that want c_stmts_opt at index 1
|
|
iflaststmt ::= testexpr c_stmts_opt34
|
|
c_stmts_opt34 ::= JUMP_BACK JUMP_ABSOLUTE c_stmts_opt
|
|
|
|
# Python 3.3 added "yield from." Do it the same way as in
|
|
# 3.3
|
|
|
|
expr ::= yield_from
|
|
yield_from ::= expr expr YIELD_FROM
|
|
|
|
# Is this 3.4 only?
|
|
yield_from ::= expr GET_ITER LOAD_CONST YIELD_FROM
|
|
|
|
# Python 3.4+ has more loop optimization that removes
|
|
# JUMP_FORWARD in some cases, and hence we also don't
|
|
# see COME_FROM
|
|
_ifstmts_jump ::= c_stmts_opt
|
|
"""
|
|
class Python34ParserSingle(Python34Parser, PythonParserSingle):
|
|
pass
|
|
|
|
|
|
def info(args):
|
|
# Check grammar
|
|
# Should also add a way to dump grammar
|
|
p = Python34Parser()
|
|
p.checkGrammar()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
import sys
|
|
info(sys.argv)
|