jinx/python-uncompyle6
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Start to DRY Python2 and Python3 grammars

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Separate out 3.2, and 3.5+ specific grammar code
This commit is contained in:
rocky
2016-05-01 07:13:36 -04:00
parent fa48c9fc61
commit dc80b140c6
3 changed files with 113 additions and 123 deletions
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83
uncompyle6/parser.py
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@@ -192,6 +192,51 @@ class PythonParser(GenericASTBuilder):
load_attrs ::= load_attrs LOAD_ATTR
'''
def p_list_comprehension(self, args):
"""
expr ::= list_compr
list_compr ::= BUILD_LIST_0 list_iter
list_iter ::= list_for
list_iter ::= list_if
list_iter ::= list_if_not
list_iter ::= lc_body
_come_from ::= COME_FROM
_come_from ::=
list_if ::= expr jmp_false list_iter
list_if_not ::= expr jmp_true list_iter
lc_body ::= expr LIST_APPEND
"""
def p_setcomp(self, args):
"""
expr ::= setcomp
setcomp ::= LOAD_SETCOMP MAKE_FUNCTION_0 expr GET_ITER CALL_FUNCTION_1
stmt ::= setcomp_func
setcomp_func ::= BUILD_SET_0 LOAD_FAST FOR_ITER designator comp_iter
JUMP_BACK RETURN_VALUE RETURN_LAST
comp_iter ::= comp_if
comp_iter ::= comp_ifnot
comp_iter ::= comp_for
comp_iter ::= comp_body
comp_body ::= set_comp_body
comp_body ::= gen_comp_body
comp_body ::= dict_comp_body
set_comp_body ::= expr SET_ADD
gen_comp_body ::= expr YIELD_VALUE POP_TOP
dict_comp_body ::= expr expr MAP_ADD
comp_if ::= expr jmp_false comp_iter
comp_ifnot ::= expr jmp_true comp_iter
"""
def parse(p, tokens, customize):
p.add_custom_rules(tokens, customize)
@@ -201,12 +246,11 @@ def parse(p, tokens, customize):
def get_python_parser(version, debug_parser, compile_mode='exec'):
"""
Returns parser object for Python version 2 or 3
depending on the parameter passed. *compile_mode*
is either 'exec', 'eval', or 'single'. See
https://docs.python.org/3.6/library/functions.html#compile for an explanation
of the different modes.
"""Returns parser object for Python version 2 or 3, 3.2, 3.5on,
etc., depending on the parameters passed. *compile_mode* is either
'exec', 'eval', or 'single'. See
https://docs.python.org/3.6/library/functions.html#compile for an
explanation of the different modes.
"""
if version < 3.0:
@@ -217,13 +261,34 @@ def get_python_parser(version, debug_parser, compile_mode='exec'):
p = parse2.Python2ParserSingle(debug_parser)
else:
import uncompyle6.parsers.parse3 as parse3
if compile_mode == 'exec':
p = parse3.Python3Parser(debug_parser)
if version == 3.2:
if compile_mode == 'exec':
p = parse3.Python32Parser(debug_parser)
else:
p = parse3.Python32ParserSingle(debug_parser)
elif version >= 3.5:
if compile_mode == 'exec':
p = parse3.Python35onParser(debug_parser)
else:
p = parse3.Python35onParserSingle(debug_parser)
else:
p = parse3.Python3ParserSingle(debug_parser)
if compile_mode == 'exec':
p = parse3.Python3Parser(debug_parser)
else:
p = parse3.Python3ParserSingle(debug_parser)
p.version = version
return p
class PythonParserSingle(PythonParser):
def p_call_stmt(self, args):
'''
# single-mode compilation. Eval-mode interactive compilation
# drops the last rule.
call_stmt ::= expr POP_TOP
call_stmt ::= expr PRINT_EXPR
'''
def python_parser(version, co, out=sys.stdout, showasm=False,
parser_debug=PARSER_DEFAULT_DEBUG):
assert iscode(co)