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3.x Grammar reduction of custom rules...

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by looking for token patterns GET_ITER CALL_FUNCTION_1
This commit is contained in:
rocky
2017-11-23 07:47:38 -05:00
parent d8a3c2708e
commit 1823513841
6 changed files with 35 additions and 18 deletions
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BIN
test/bytecode_3.3/01_ops.pyc Normal file
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16
test/simple_source/bug30/01_ops.py Normal file
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@@ -0,0 +1,16 @@
# Statements to beef up grammar coverage rules
# Force "inplace" ops
y = +10 # UNARY_POSITIVE
y /= 1 # INPLACE_DIVIDE
y %= 4 # INPLACE_MODULO
y **= 1 # INPLACE POWER
y >>= 2 # INPLACE_RSHIFT
y <<= 2 # INPLACE_LSHIFT
y //= 1 # INPLACE_TRUE_DIVIDE
y &= 1 # INPLACE_AND
y ^= 1 # INPLACE_XOR
# Beef up augassign and STORE_SLICE+3
x = [1,2,3,4,5]
x[0:1] = 1
x[0:3] += 1, 2, 3

1
uncompyle6/parser.py
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@@ -506,7 +506,6 @@ class PythonParser(GenericASTBuilder):
expr ::= conditional
conditional ::= expr jmp_false expr JUMP_FORWARD expr COME_FROM
conditional ::= expr jmp_false expr JUMP_ABSOLUTE expr
expr ::= conditionalTrue
conditionalTrue ::= expr JUMP_FORWARD expr COME_FROM

2
uncompyle6/parsers/parse2.py
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@@ -201,6 +201,8 @@ class Python2Parser(PythonParser):
# In Python 3, DUP_TOPX_2 is DUP_TOP_TWO
binary_subscr2 ::= expr expr DUP_TOPX_2 BINARY_SUBSCR
conditional ::= expr jmp_false expr JUMP_ABSOLUTE expr
"""
def p_slice2(self, args):

8
uncompyle6/parsers/parse3.py
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@@ -279,8 +279,6 @@ class Python3Parser(PythonParser):
for_block ::= l_stmts_opt opt_come_from_loop JUMP_BACK
for_block ::= l_stmts
iflaststmtl ::= testexpr c_stmts_opt
iflaststmt ::= testexpr c_stmts_opt33
c_stmts_opt33 ::= JUMP_BACK JUMP_ABSOLUTE c_stmts_opt
"""
def p_def_annotations3(self, args):
@@ -421,7 +419,6 @@ class Python3Parser(PythonParser):
def p_expr3(self, args):
"""
expr ::= conditionalnot
conditional ::= expr jmp_false expr jump_forward_else expr COME_FROM
conditionalnot ::= expr jmp_true expr jump_forward_else expr COME_FROM
# a JUMP_FORWARD to another JUMP_FORWARD can get turned into
@@ -862,7 +859,7 @@ class Python3Parser(PythonParser):
('kwarg '* args_kw),
opname))
self.add_make_function_rule(rule_pat, opname, token.attr, customize)
if seen_LOAD_LISTCOMP:
if seen_LOAD_LISTCOMP and has_get_iter_call_function1:
rule_pat = ("listcomp ::= %sLOAD_LISTCOMP %%s%s expr "
"GET_ITER CALL_FUNCTION_1" % ('expr ' * args_pos, opname))
self.add_make_function_rule(rule_pat, opname, token.attr, customize)
@@ -872,6 +869,7 @@ class Python3Parser(PythonParser):
else:
args_pos, args_kw, annotate_args, closure = token.attr
if has_get_iter_call_function1:
rule_pat = ("genexpr ::= %sload_genexpr %%s%s expr "
"GET_ITER CALL_FUNCTION_1" % ('pos_arg '* args_pos, opname))
self.add_make_function_rule(rule_pat, opname, token.attr, customize)
@@ -880,6 +878,8 @@ class Python3Parser(PythonParser):
('kwarg '* args_kw),
opname))
self.add_make_function_rule(rule_pat, opname, token.attr, customize)
if seen_LOAD_LISTCOMP and has_get_iter_call_function1:
rule_pat = ("listcomp ::= %sLOAD_LISTCOMP %%s%s expr "
"GET_ITER CALL_FUNCTION_1" % ('expr ' * args_pos, opname))
self.add_make_function_rule(rule_pat, opname, token.attr, customize)

10
uncompyle6/parsers/parse32.py
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@@ -1,4 +1,4 @@
# Copyright (c) 2016 Rocky Bernstein
# Copyright (c) 2016-2017 Rocky Bernstein
"""
spark grammar differences over Python 3 for Python 3.2.
"""
@@ -10,15 +10,15 @@ from uncompyle6.parsers.parse3 import Python3Parser
class Python32Parser(Python3Parser):
def p_32to35(self, args):
"""
conditional ::= expr jmp_false expr jump_forward_else expr COME_FROM
# Store locals is only in Python 3.0 to 3.3
stmt ::= store_locals
store_locals ::= LOAD_FAST STORE_LOCALS
# Python < 3.5 no POP BLOCK
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK
COME_FROM_LOOP
whileTruestmt ::= SETUP_LOOP return_stmts
COME_FROM_LOOP
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK COME_FROM_LOOP
whileTruestmt ::= SETUP_LOOP return_stmts COME_FROM_LOOP
try_middle ::= JUMP_FORWARD COME_FROM_EXCEPT except_stmts
END_FINALLY