Added removal of the null character.

Weird stuff that caused errors in parsing bracket notation in C++.

python_ast/parse_json.py

@@ -14,7 +14,9 @@ import json
 def print_tree(json_tree, index):
   print('{' + json_tree[index]['type'], end='')
   if 'value' in json_tree[index]:
-    print('{' + json_tree[index]['value'].replace('\r','').replace('\n','').replace('\t', '').strip().translate(str.maketrans({"{":  r"\{",
+    # \x00 is a null character (https://en.wikipedia.org/wiki/Null_character)
+    #      it caused endless loop / SEGFAULT while parsing a tree in bracket notation
+    print('{' + json_tree[index]['value'].replace('\r','').replace('\n','').replace('\t', '').replace('\x00', '').strip().translate(str.maketrans({"{":  r"\{",
                                                                                                             "}":  r"\}",
                                                                                                             "\\": r"\\"}))
               + '}', end='')