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Python 3.0 chained comparisions

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rocky
2018-06-23 07:37:47 -04:00
parent fb31fe1f35
commit c148e49670
6 changed files with 25 additions and 12 deletions
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18
uncompyle6/parsers/parse30.py
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@@ -14,8 +14,6 @@ class Python30Parser(Python31Parser):
assert ::= assert_expr jmp_true LOAD_ASSERT RAISE_VARARGS_1 POP_TOP
return_if_lambda ::= RETURN_END_IF_LAMBDA POP_TOP
compare_chained1 ::= expr DUP_TOP ROT_THREE COMPARE_OP
JUMP_IF_FALSE POP_TOP compare_chained2
compare_chained2 ::= expr COMPARE_OP RETURN_END_IF_LAMBDA
# FIXME: combine with parse3.2
@@ -72,6 +70,7 @@ class Python30Parser(Python31Parser):
_jump POP_TOP
jump_except ::= JUMP_FORWARD POP_TOP
################################################################################
# In many ways 3.0 is like 2.6. The below rules in fact are the same or similar.
jmp_true ::= JUMP_IF_TRUE POP_TOP
@@ -87,6 +86,13 @@ class Python30Parser(Python31Parser):
JUMP_BACK POP_TOP POP_BLOCK COME_FROM_LOOP
whilestmt ::= SETUP_LOOP testexpr returns
POP_TOP POP_BLOCK COME_FROM_LOOP
# compare_chained is like x <= y <= z
compare_chained1 ::= expr DUP_TOP ROT_THREE COMPARE_OP
jmp_false compare_chained1 _come_froms
compare_chained1 ::= expr DUP_TOP ROT_THREE COMPARE_OP
jmp_false compare_chained2 _come_froms
"""
def customize_grammar_rules(self, tokens, customize):
@@ -104,9 +110,15 @@ class Python30Parser(Python31Parser):
POP_BLOCK COME_FROM_LOOP
assert ::= assert_expr jmp_true LOAD_ASSERT RAISE_VARARGS_1
return_if_lambda ::= RETURN_END_IF_LAMBDA
compare_chained1 ::= expr DUP_TOP ROT_THREE COMPARE_OP JUMP_IF_FALSE_OR_POP compare_chained2 COME_FROM
except_handler ::= jmp_abs COME_FROM_EXCEPT except_stmts END_FINALLY
except_suite ::= c_stmts POP_EXCEPT jump_except
# No JUMP_IF_FALSE_OR_POP
compare_chained1 ::= expr DUP_TOP ROT_THREE COMPARE_OP JUMP_IF_FALSE_OR_POP
compare_chained1 COME_FROM
compare_chained1 ::= expr DUP_TOP ROT_THREE COMPARE_OP JUMP_IF_FALSE_OR_POP
compare_chained2 COME_FROM
""")
return