3.8 "for" block ...

pysource: Tag older semantics for blocks with "expr" and "for_block"

uncompyle6/parser.py

@@ -747,6 +747,12 @@ def get_python_parser(
                 p = parse37.Python37Parser(debug_parser)
             else:
                 p = parse37.Python37ParserSingle(debug_parser)
+        elif version == 3.8:
+            import uncompyle6.parsers.parse38 as parse38
+            if compile_mode == 'exec':
+                p = parse38.Python38Parser(debug_parser)
+            else:
+                p = parse38.Python38ParserSingle(debug_parser)
         else:
             if compile_mode == 'exec':
                 p = parse3.Python3Parser(debug_parser)

uncompyle6/parsers/parse38.py

@@ -25,7 +25,10 @@ class Python38Parser(Python37Parser):
 
     def p_38misc(self, args):
         """
-        for               ::= expr get_iter store for_block JUMP_BACK
+        stmt              ::= for38
+        for38             ::= expr get_iter store for_block JUMP_BACK
+        for38             ::= expr for_iter store for_block JUMP_BACK
+
         forelsestmt       ::= expr for_iter store for_block POP_BLOCK else_suite
         forelselaststmt   ::= expr for_iter store for_block POP_BLOCK else_suitec
         forelselaststmtl  ::= expr for_iter store for_block POP_BLOCK else_suitel
@@ -40,6 +43,7 @@ class Python38Parser(Python37Parser):
         while1elsestmt    ::= l_stmts JUMP_BACK
         whileTruestmt     ::= l_stmts_opt JUMP_BACK NOP
         whileTruestmt     ::= l_stmts_opt JUMP_BACK POP_BLOCK NOP
+        for_block         ::= l_stmts_opt _come_from_loops JUMP_BACK
         """
 
     def __init__(self, debug_parser=PARSER_DEFAULT_DEBUG):
@@ -47,7 +51,6 @@ class Python38Parser(Python37Parser):
         self.customized = {}
 
     def customize_grammar_rules(self, tokens, customize):
-        from trepan.api import debug; debug()
         self.remove_rules("""
            for               ::= SETUP_LOOP expr for_iter store for_block POP_BLOCK
            forelsestmt       ::= SETUP_LOOP expr for_iter store for_block POP_BLOCK else_suite

uncompyle6/semantics/consts.py

@@ -276,13 +276,25 @@ TABLE_DIRECT = {
     'while1elsestmt':   ( '%|while 1:\n%+%c%-%|else:\n%+%c%-\n\n', 1, -2 ),
     'whileelsestmt':	( '%|while %c:\n%+%c%-%|else:\n%+%c%-\n\n', 1, 2, -2 ),
     'whileelselaststmt':	( '%|while %c:\n%+%c%-%|else:\n%+%c%-', 1, 2, -2 ),
-    'for':              ( '%|for %c in %c:\n%+%c%-\n\n', (3, 'store'), 1, 4 ),
+    'for':              ( '%|for %c in %c:\n%+%c%-\n\n',
+                          (3, 'store'),
+                          (1, 'expr'),
+                          (4, 'for_block') ),
     'forelsestmt':	    (
-        '%|for %c in %c:\n%+%c%-%|else:\n%+%c%-\n\n', (3, 'store'), 1, 4, -2 ),
+        '%|for %c in %c:\n%+%c%-%|else:\n%+%c%-\n\n',
+                          (3, 'store'),
+                          (1, 'expr'),
+                          (4, 'for_block'), -2 ),
     'forelselaststmt':	(
-        '%|for %c in %c:\n%+%c%-%|else:\n%+%c%-', (3, 'store'), 1, 4, -2 ),
+        '%|for %c in %c:\n%+%c%-%|else:\n%+%c%-',
+                          (3, 'store'),
+                          (1, 'expr'),
+                          (4, 'for_block'), -2 ),
     'forelselaststmtl':	(
-        '%|for %c in %c:\n%+%c%-%|else:\n%+%c%-\n\n', (3, 'store'), 1, 4, -2 ),
+        '%|for %c in %c:\n%+%c%-%|else:\n%+%c%-\n\n',
+                          (3, 'store'),
+                          (1, 'expr'),
+                          (4, 'for_block'), -2 ),
     'try_except':       ( '%|try:\n%+%c%-%c\n\n', 1, 3 ),
     'tryelsestmt':	    ( '%|try:\n%+%c%-%c%|else:\n%+%c%-\n\n', 1, 3, 4 ),
     'tryelsestmtc':	    ( '%|try:\n%+%c%-%c%|else:\n%+%c%-', 1, 3, 4 ),

uncompyle6/semantics/customize3.py

@@ -908,6 +908,10 @@ def customize_for_version3(self, version):
             self.n_return_closure = return_closure
 
             if version >= 3.7:
+                ########################
+                # Python 3.7+ Additions
+                #######################
+
                 PRECEDENCE['attribute37'] = 2
                 TABLE_DIRECT.update({
                     'attribute37':  ( '%c.%[1]{pattr}', 0 ),
@@ -928,7 +932,19 @@ def customize_for_version3(self, version):
                     'compare_chained2b_37': ( '%[1]{pattr.replace("-", " ")} %p', (0, 19)),
 
                     })
+                if version >= 3.8:
+                    ########################
+                    # Python 3.8+ Additions
+                    #######################
+                    TABLE_DIRECT.update({
+                        'for38':            ( '%|for %c in %c:\n%+%c%-\n\n',
+                                              (2, 'store'),
+                                              (0, 'expr'),
+                                              (3, 'for_block') ),
+                    })
+                    pass
                 pass
+
             pass # version >= 3.6
         pass # version >= 3.4
     return