DRY Python3 grammar

uncompyle6/parsers/parse3.py

@@ -376,9 +376,7 @@ class Python3Parser(PythonParser):
         # Python 3.4+
         expr ::= LOAD_CLASSDEREF
 
-        binary_subscr2 ::= expr expr DUP_TOP_TWO BINARY_SUBSCR
         # Python3 drops slice0..slice3
-
         '''
 
     @staticmethod

uncompyle6/parsers/parse32.py

@@ -10,9 +10,6 @@ from uncompyle6.parsers.parse3 import Python3Parser
 class Python32Parser(Python3Parser):
     def p_32to35(self, args):
         """
-        # In Python 3.2+, DUP_TOPX is DUP_TOP_TWO
-        binary_subscr2 ::= expr expr DUP_TOP_TWO BINARY_SUBSCR
-
         # Store locals is only in Python 3.0 to 3.3
         stmt ::= store_locals
         store_locals ::= LOAD_FAST STORE_LOCALS

uncompyle6/parsers/parse33.py

@@ -19,7 +19,6 @@ class Python33Parser(Python32Parser):
         # actions that want c_stmts_opt at index 1
 
         iflaststmt    ::= testexpr c_stmts_opt33
-        iflaststmtl   ::= testexpr c_stmts_opt
         c_stmts_opt33 ::= JUMP_BACK JUMP_ABSOLUTE c_stmts_opt
         _ifstmts_jump ::= c_stmts_opt JUMP_FORWARD _come_from
 

uncompyle6/parsers/parse34.py

@@ -17,8 +17,6 @@ class Python34Parser(Python33Parser):
         """
         # Python 3.4+ optimizes the trailing two JUMPS away
 
-        for_block ::= l_stmts
-
         # Is this 3.4 only?
         yield_from ::= expr GET_ITER LOAD_CONST YIELD_FROM
         """

uncompyle6/parsers/parse35.py

@@ -45,13 +45,7 @@ class Python35Parser(Python34Parser):
         # Python 3.3+ also has yield from. 3.5 does it
         # differently than 3.3, 3.4
 
-        expr ::= yield_from
         yield_from ::= expr GET_YIELD_FROM_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 Python35ParserSingle(Python35Parser, PythonParserSingle):
     pass