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First step towards managing control flow decoding

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rocky
2016-09-21 21:30:57 -04:00
parent 4f83a87a00
commit b6dee24289
5 changed files with 79 additions and 15 deletions
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22
uncompyle6/parsers/parse3.py
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@@ -169,7 +169,7 @@ class Python3Parser(PythonParser):
# COME_FROM targets from the wrong places
trystmt ::= SETUP_EXCEPT suite_stmts_opt POP_BLOCK
try_middle _come_from
try_middle opt_come_from_except
# this is nested inside a trystmt
tryfinallystmt ::= SETUP_FINALLY suite_stmts_opt
@@ -187,8 +187,14 @@ class Python3Parser(PythonParser):
try_middle ::= jmp_abs COME_FROM except_stmts
END_FINALLY
try_middle ::= jmp_abs COME_FROM_EXCEPT except_stmts
END_FINALLY
# FIXME: remove this
try_middle ::= JUMP_FORWARD COME_FROM except_stmts
END_FINALLY COME_FROM
try_middle ::= JUMP_FORWARD COME_FROM except_stmts
END_FINALLY COME_FROM_EXCEPT
except_stmts ::= except_stmts except_stmt
except_stmts ::= except_stmt
@@ -242,17 +248,25 @@ class Python3Parser(PythonParser):
def p_misc3(self, args):
"""
try_middle ::= JUMP_FORWARD COME_FROM except_stmts END_FINALLY NOP COME_FROM
try_middle ::= JUMP_FORWARD COME_FROM_EXCEPT except_stmts END_FINALLY COME_FROM
for_block ::= l_stmts
iflaststmtl ::= testexpr c_stmts_opt
iflaststmt ::= testexpr c_stmts_opt34
c_stmts_opt34 ::= JUMP_BACK JUMP_ABSOLUTE c_stmts_opt
"""
def p_come_from3(self, args):
"""
opt_come_from_except ::= COME_FROM_EXCEPT
opt_come_from_except ::= come_froms
come_froms ::= come_froms COME_FROM
come_froms ::=
"""
def p_jump3(self, args):
"""
come_froms ::= come_froms COME_FROM
come_froms ::= COME_FROM
jmp_false ::= POP_JUMP_IF_FALSE
jmp_true ::= POP_JUMP_IF_TRUE