jinx/python-uncompyle6
1
Fork 0
mirror of https://github.com/rocky/python-uncompyle6.git synced 2025-08-04 01:09:52 +08:00
Code Issues Packages Projects Releases Wiki Activity

Fix parser slowness in decompiling 3.x locale.py..

Browse Source 
And remove grammar inefficiency in adding extraneous kwargs in <= 3.2
kwargs was nullable so it might not have been wasn't wrong, just inefficient.
This commit is contained in:
rocky
2018-03-23 11:59:04 -04:00
parent 1b2b45642b
commit 35a60e0274
4 changed files with 68 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
uncompyle6/parsers/parse3.py
View File

@@ -112,9 +112,10 @@ class Python3Parser(PythonParser):
continues ::= continue
kwarg ::= LOAD_CONST expr
kwargs ::= kwarg*
kwargs1 ::= kwarg+
kwarg ::= LOAD_CONST expr
kwargs ::= kwarg+
no_kwargs ::=
classdef ::= build_class store
@@ -527,7 +528,7 @@ class Python3Parser(PythonParser):
subclassing is, well, is pretty base. And we want it that way: lean and
mean so that parsing will go faster.
Here, we add additional grammra rules based on specific instructions
Here, we add additional grammar rules based on specific instructions
that are in the instruction/token stream. In classes that
inherit from from here and other versions, grammar rules may
also be removed.
@@ -656,9 +657,9 @@ class Python3Parser(PythonParser):
('dict ' * token.attr) +
'BUILD_MAP_UNPACK')
else:
rule = kvlist_n + ' ::= ' + 'expr ' * (token.attr*2)
rule = "%s ::= %s %s" % (kvlist_n, 'expr ' * (token.attr*2), opname)
self.add_unique_rule(rule, opname, token.attr, customize)
rule = "dict ::= %s %s" % (kvlist_n, opname)
rule = "dict ::= %s" % kvlist_n
else:
rule = kvlist_n + ' ::= ' + 'expr expr STORE_MAP ' * token.attr
self.add_unique_rule(rule, opname, token.attr, customize)
@@ -866,13 +867,13 @@ class Python3Parser(PythonParser):
opname, token.attr, customize)
if args_kw > 0:
kwargs_str = 'kwargs1 '
kwargs_str = 'kwargs '
else:
kwargs_str = ''
# Note order of kwargs and pos args changed between 3.3-3.4
if self.version <= 3.2:
rule = ('mkfunc ::= %s%sload_closure LOAD_CONST kwargs %s'
rule = ('mkfunc ::= %s%sload_closure LOAD_CONST %s'
% (kwargs_str, 'expr ' * args_pos, opname))
elif self.version == 3.3:
rule = ('mkfunc ::= %s%sload_closure LOAD_CONST LOAD_CONST %s'
@@ -980,29 +981,37 @@ class Python3Parser(PythonParser):
opname))
self.add_make_function_rule(rule_pat, opname, token.attr, customize)
if args_kw == 0:
kwargs = 'no_kwargs'
else:
kwargs = 'kwargs'
if self.version < 3.3:
# positional args after keyword args
rule = ('mkfunc ::= kwargs %s%s %s' %
rule = ('mkfunc ::= %s %s%s%s' %
(kwargs, 'pos_arg ' * args_pos, 'LOAD_CONST ',
opname))
self.add_unique_rule(rule, opname, token.attr, customize)
rule = ('mkfunc ::= %s%s%s' %
('pos_arg ' * args_pos, 'LOAD_CONST ',
opname))
elif self.version == 3.3:
# positional args after keyword args
rule = ('mkfunc ::= kwargs %s%s %s' %
('pos_arg ' * args_pos, 'LOAD_CONST '*2,
rule = ('mkfunc ::= %s %s%s%s' %
(kwargs, 'pos_arg ' * args_pos, 'LOAD_CONST '*2,
opname))
elif self.version > 3.5:
# positional args before keyword args
rule = ('mkfunc ::= %skwargs1 %s %s' %
('pos_arg ' * args_pos, 'LOAD_CONST '*2,
rule = ('mkfunc ::= %s%s %s%s' %
('pos_arg ' * args_pos, kwargs, 'LOAD_CONST '*2,
opname))
elif self.version > 3.3:
# positional args before keyword args
rule = ('mkfunc ::= %skwargs %s %s' %
('pos_arg ' * args_pos, 'LOAD_CONST '*2,
rule = ('mkfunc ::= %s%s %s%s' %
('pos_arg ' * args_pos, kwargs, 'LOAD_CONST '*2,
opname))
else:
rule = ('mkfunc ::= kwargs %sexpr %s' %
('pos_arg ' * args_pos, opname))
rule = ('mkfunc ::= %s%sexpr %s' %
(kwargs, 'pos_arg ' * args_pos, opname))
self.add_unique_rule(rule, opname, token.attr, customize)
if opname.startswith('MAKE_FUNCTION_A'):
if self.version >= 3.6: