Need more precise "assert" for 3.8...

Add rule for ifelsestmtl which is needed in 3.8

uncompyle6/parsers/parse3.py

@@ -1532,7 +1532,7 @@ class Python3Parser(PythonParser):
         # FIXME: Put more in this table
         self.reduce_check_table = {
             "except_handler_else": except_handler_else,
-            # "ifstmt": ifstmt,
+            "ifstmt": ifstmt,
             "ifstmtl": ifstmt,
             "ifelsestmtc": ifstmt,
             "ifelsestmt": ifelsestmt,

uncompyle6/parsers/parse37.py

@@ -987,6 +987,7 @@ class Python37Parser(Python37BaseParser):
 
         stmt               ::= whileTruestmt
         ifelsestmt         ::= testexpr c_stmts_opt JUMP_FORWARD else_suite _come_froms
+        ifelsestmtl        ::= testexpr c_stmts_opt jump_forward_else else_suitec
 
         ifstmtl            ::= testexpr _ifstmts_jumpl
 

uncompyle6/parsers/reducecheck/ifelsestmt.py

@@ -87,10 +87,15 @@ def ifelsestmt(self, lhs, n, rule, ast, tokens, first, last):
     if rule not in IFELSE_STMT_RULES:
         return False
 
-    # Avoid if/else where the "then" is a "raise_stmt1". Parse this
-    # as an "assert" instead.
+    # Avoid if/else where the "then" is a "raise_stmt1" for an
+    # assert statemetn. Parse this as an "assert" instead.
     stmts = ast[1]
-    if stmts in ("c_stmts",) and len(stmts) == 1 and stmts[0] == "raise_stmt1":
+    if stmts in ("c_stmts",) and len(stmts) == 1:
+        raise_stmt1 = stmts[0]
+        if (
+                raise_stmt1 == "raise_stmt1" and
+                raise_stmt1[0] in ("LOAD_ASSERT",)
+        ):
             return True
 
     # Make sure all of the "come froms" offset at the