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2.6 try statement (and below)

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They may neeed arbitrary come_froms for each except clause
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rocky
2016-10-13 19:37:38 -04:00
parent 20ba165e4a
commit 5703ccd8b8
3 changed files with 27 additions and 15 deletions
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7
uncompyle6/parsers/parse26.py
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@@ -22,10 +22,6 @@ class Python26Parser(Python2Parser):
except_cond3 ::= DUP_TOP expr COMPARE_OP
JUMP_IF_FALSE POP_TOP POP_TOP designator POP_TOP
# Might be a bug from when COME_FROM wasn't properly handled
try_middle ::= JUMP_FORWARD COME_FROM except_stmts
POP_TOP END_FINALLY come_froms
try_middle ::= JUMP_FORWARD COME_FROM except_stmts
come_from_pop END_FINALLY COME_FROM
@@ -43,6 +39,9 @@ class Python26Parser(Python2Parser):
trystmt ::= SETUP_EXCEPT suite_stmts_opt POP_BLOCK
try_middle
trystmt ::= SETUP_EXCEPT suite_stmts_opt POP_BLOCK
try_middle come_froms
tryelsestmt ::= SETUP_EXCEPT suite_stmts_opt POP_BLOCK
try_middle else_suite come_froms

16
uncompyle6/scanners/scanner2.py
View File

@@ -143,13 +143,19 @@ class Scanner2(scan.Scanner):
extended_arg = 0
for offset in self.op_range(0, n):
if offset in jump_targets:
k = 0
for j in jump_targets[offset]:
jump_idx = 0
# We want to process COME_FROMs to the same offset to be in *descending*
# offset order so we have the larger range or biggest instruction interval
# last. (I think they are sorted in increasing order, but for safety
# we sort them). That way, specific COME_FROM tags will match up
# properly. For example, a "loop" with an "if" nested in it should have the
# "loop" tag last so the grammar rule matches that properly.
for jump_offset in sorted(jump_targets[offset], reverse=True):
tokens.append(Token(
'COME_FROM', None, repr(j),
offset="%s_%d" % (offset, k),
'COME_FROM', None, repr(jump_offset),
offset="%s_%d" % (offset, jump_idx),
has_arg = True))
k += 1
jump_idx += 1
op = self.code[offset]
opname = self.opc.opname[op]

19
uncompyle6/scanners/scanner26.py
View File

@@ -169,12 +169,19 @@ class Scanner26(scan.Scanner2):
oparg = None; pattr = None
if offset in jump_targets:
k = 0
for j in jump_targets[offset]:
tokens.append(Token('COME_FROM', None, repr(j),
offset="%s_%d" % (offset, k),
has_arg = True))
k += 1
jump_idx = 0
# We want to process COME_FROMs to the same offset to be in *descending*
# offset order so we have the larger range or biggest instruction interval
# last. (I think they are sorted in increasing order, but for safety
# we sort them). That way, specific COME_FROM tags will match up
# properly. For example, a "loop" with an "if" nested in it should have the
# "loop" tag last so the grammar rule matches that properly.
for jump_offset in sorted(jump_targets[offset], reverse=True):
tokens.append(Token(
'COME_FROM', None, repr(jump_offset),
offset="%s_%d" % (offset, jump_idx),
has_arg = True))
jump_idx += 1
has_arg = (op >= self.opc.HAVE_ARGUMENT)
if has_arg: