Fix some 2.5 parsing bugs

Author: rocky

test/bytecode_2.5/06_if_and_bugs.pyc

@@ -0,0 +1,18 @@
+# 2.5 Bug is from nose/plugins/cover.py
+def wantFile(self, file, package=None):
+    if self.coverInclusive:
+        if file.endswith(".py"):
+            if package and self.coverPackages:
+                for want in self.coverPackages:
+                    if package.startswith(want):
+                        return True
+            else:
+                return True
+    return None
+
+
+# 2.5 bug is from nose/plugins/doctests.py
+def wantFile2(self, file):
+    if self and (self.conf or [exc.search(file) for exc in self.conf]):
+        return True
+    return None

test/simple_source/bug25/06_if_and_bugs.py

@@ -62,6 +62,11 @@ def p_misc25(self, args):
         kv     ::= DUP_TOP expr ROT_TWO expr STORE_SUBSCR
 
         _ifstmts_jump ::= c_stmts_opt COME_FROM JUMP_ABSOLUTE COME_FROM POP_TOP
+
+
+        # "and_then" is a hack around the fact we have THEN detection.
+        and_then ::= expr JUMP_IF_FALSE THEN POP_TOP expr JUMP_IF_FALSE THEN POP_TOP
+        testexpr_then ::= and_then
         """
 
     def customize_grammar_rules(self, tokens, customize):

uncompyle6/parsers/parse25.py

@@ -33,6 +33,7 @@ def customize_for_version25(self, version):
             # Note: It is safe to put the variables after "as" in parenthesis,
             # and sometimes it is needed.
             "with": ("%|with %c:\n%+%c%-", 0, 3),
+            "and_then": ("%c and %c", (0, "expr"), (4, "expr")),
         }
     )