Changes to make this work on Python 3.8

Author: rocky

bin/spark-parser-coverage

@@ -25,8 +25,8 @@ def sort_profile_info(path, max_count=1000):
             used_rules.append((count, rule))
 
     for count, rule in used_rules:
-        if rule.find('\e_') > -1:
-            canonic_rule = rule.replace('\e_', '', 1000)
+        if rule.find("\\e_") > -1:
+            canonic_rule = rule.replace("\\e_", "", 1000)
             if canonic_rule in unused_rules:
                 unused_rules.remove(canonic_rule)
                 pass

spark_parser/ast.py

@@ -1,6 +1,7 @@
 import sys
 
 PYTHON3 = (sys.version_info >= (3, 0))
+PYTHON38 = (sys.version_info >= (3, 8))
 
 if PYTHON3:
     intern = sys.intern
@@ -17,6 +18,10 @@ def __init__(self, kind, kids=[]):
     def __getslice__(self, low, high):
         return self.data[low:high]
 
+    if PYTHON38:
+        def __getitem__(self, i):
+            return self.data[i]
+
     def __eq__(self, o):
         if isinstance(o, AST):
             return (self.kind == o.kind and