Build(GHActions): Use `checkout@v4` instead of outdated `v2`

[sqlconvert.git] / sqlconvert / process_tokens.py

diff --git a/sqlconvert/process_tokens.py b/sqlconvert/process_tokens.py
index cb14467ccf958b478d888714ebaa6240e10fede2..886f36d46c02d1f824486593f3263bd06b3cb3b3 100644 (file)
--- a/sqlconvert/process_tokens.py
+++ b/sqlconvert/process_tokens.py
@@ -2,9 +2,13 @@
 from sqlparse.sql import Comment
 from sqlobject.converters import sqlrepr
 from sqlparse import parse
-from sqlparse.compat import PY3
 from sqlparse import tokens as T
 
+try:
+    xrange
+except NameError:
+    xrange = range
+
 
 def find_error(token_list):
     """Find an error"""
@@ -36,10 +40,6 @@ def escape_strings(token_list, dbname):
             token.normalized = token.value = value
 
 
-if PY3:
-    xrange = range
-
-
 class StatementGrouper(object):
     """Collect lines and reparse until the last statement is complete"""
 
@@ -54,6 +54,8 @@ class StatementGrouper(object):
 
     def process_lines(self):
         statements = parse(''.join(self.lines), encoding=self.encoding)
+        if not statements:
+            return
         last_stmt = statements[-1]
         for i in xrange(len(last_stmt.tokens) - 1, 0, -1):
             token = last_stmt.tokens[i]