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3.8 async for/with...

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More is needed though.
This commit is contained in:
rocky
2019-04-13 22:22:37 -04:00
parent f89ba40147
commit 400943bb6a
3 changed files with 54 additions and 16 deletions
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2
uncompyle6/parsers/parse35.py
View File

@@ -160,7 +160,7 @@ class Python35Parser(Python34Parser):
call_token = tokens[i+1]
rule = 'call ::= expr unmapexpr ' + call_token.kind
self.addRule(rule, nop_func)
elif opname == 'BEFORE_ASYNC_WITH':
elif opname == 'BEFORE_ASYNC_WITH' and self.version < 3.8:
# Some Python 3.5+ async additions
rules_str = """
async_with_stmt ::= expr

49
uncompyle6/parsers/parse38.py
View File

@@ -35,21 +35,40 @@ class Python38Parser(Python37Parser):
stmt ::= try_except38
stmt ::= whilestmt38
stmt ::= whileTruestmt38
stmt ::= call
# FIXME this should be restricted to being inside a try block
stmt ::= except_ret38
async_for_stmt38 ::= expr
GET_AITER
SETUP_FINALLY
GET_ANEXT
LOAD_CONST
YIELD_FROM
POP_BLOCK
store for_block
COME_FROM_FINALLY
END_ASYNC_FOR
# FIXME this should be added only when seeing GET_AITER or YIELD_FROM
async_for_stmt38 ::= expr
GET_AITER
SETUP_FINALLY
GET_ANEXT
LOAD_CONST
YIELD_FROM
POP_BLOCK
store for_block
COME_FROM_FINALLY
END_ASYNC_FOR
async_with_stmt ::= expr BEFORE_ASYNC_WITH GET_AWAITABLE LOAD_CONST YIELD_FROM
SETUP_ASYNC_WITH POP_TOP
suite_stmts
POP_TOP POP_BLOCK
BEGIN_FINALLY
WITH_CLEANUP_START
GET_AWAITABLE LOAD_CONST YIELD_FROM
WITH_CLEANUP_FINISH END_FINALLY
async_with_as_stmt ::= expr BEFORE_ASYNC_WITH GET_AWAITABLE LOAD_CONST YIELD_FROM
SETUP_ASYNC_WITH store
suite_stmts
POP_TOP POP_BLOCK
BEGIN_FINALLY
WITH_CLEANUP_START
GET_AWAITABLE LOAD_CONST YIELD_FROM
WITH_CLEANUP_FINISH END_FINALLY
return ::= ret_expr ROT_TWO POP_TOP RETURN_VALUE
@@ -132,7 +151,8 @@ class Python38Parser(Python37Parser):
END_FINALLY for_block COME_FROM
POP_TOP POP_TOP POP_TOP POP_EXCEPT
POP_TOP POP_BLOCK
COME_FROM_LOOP
COME_FROM_LOOP
for ::= SETUP_LOOP expr for_iter store for_block POP_BLOCK
for ::= SETUP_LOOP expr for_iter store for_block POP_BLOCK NOP
@@ -154,6 +174,7 @@ class Python38Parser(Python37Parser):
""")
super(Python37Parser, self).customize_grammar_rules(tokens, customize)
self.check_reduce['ifstmt'] = 'tokens'
self.check_reduce['whileTruestmt38'] = 'tokens'
def reduce_is_invalid(self, rule, ast, tokens, first, last):
invalid = super(Python38Parser,
@@ -178,6 +199,12 @@ class Python38Parser(Python37Parser):
pass
pass
pass
elif rule[0] == 'whileTruestmt38':
t = tokens[last-1]
if t.kind == 'JUMP_BACK':
return t.attr != tokens[first].offset
pass
return False
class Python38ParserSingle(Python38Parser, PythonParserSingle):

19
uncompyle6/semantics/customize3.py
View File

@@ -285,14 +285,16 @@ def customize_for_version3(self, version):
'await_expr': ( 'await %c', 0),
'await_stmt': ( '%|%c\n', 0),
'async_for_stmt': (
'%|async for %c in %c:\n%+%c%-\n\n', 9, 1, 25 ),
'%|async for %c in %c:\n%+%|%c%-\n\n', 9, 1, 25 ),
'async_forelse_stmt': (
'%|async for %c in %c:\n%+%c%-%|else:\n%+%c%-\n\n',
9, 1, 25, (27, 'else_suite') ),
'async_with_stmt': (
'%|async with %c:\n%+%c%-', 0, 7),
'%|async with %c:\n%+%|%c%-',
(0, 'expr'), 7 ),
'async_with_as_stmt': (
'%|async with %c as %c:\n%+%c%-', 0, 6, 7),
'%|async with %c as %c:\n%+%|%c%-',
(0, 'expr'), (6, 'store'), 7),
'unmap_dict': ( '{**%C}', (0, -1, ', **') ),
# 'unmapexpr': ( '{**%c}', 0), # done by n_unmapexpr
@@ -952,7 +954,16 @@ def customize_for_version3(self, version):
TABLE_DIRECT.update({
'async_for_stmt38': (
'%|async for %c in %c:\n%+%c%-%-\n\n',
(0, 'expr'), (7, 'store'), (8, 'for_block') ),
(7, 'store'), (0, 'expr'), (8, 'for_block') ),
'async_with_stmt38': (
'%|async with %c:\n%+%|%c%-',
(0, 'expr'), 7),
'async_with_as_stmt38': (
'%|async with %c as %c:\n%+%|%c%-',
(0, 'expr'), (6, 'store'),
(7, 'suite_stmts') ),
'except_handler38a': (
'%c', (-2, 'stmts') ),