X-Git-Url: https://git.phdru.name/?a=blobdiff_plain;f=sqlconvert%2Fprocess_tokens.py;h=414c5ca5a024bd783205655526897e87aa872ddf;hb=2c347af7a3bdfb0e23ba96b28150d4e83485cf74;hp=8cf1fe5e73ffd005a717115fdbf8c114ffe24783;hpb=406e4920528c81461e2cbaff6f1c36c29b8167f5;p=sqlconvert.git

diff --git a/sqlconvert/process_tokens.py b/sqlconvert/process_tokens.py
index 8cf1fe5..414c5ca 100644
--- a/sqlconvert/process_tokens.py
+++ b/sqlconvert/process_tokens.py
@@ -1,4 +1,5 @@
 
+from sqlparse.sql import Comment
 from sqlobject.converters import sqlrepr
 from sqlparse import parse
 from sqlparse.compat import PY3
@@ -13,6 +14,12 @@ def find_error(token_list):
     return False
 
 
+def is_comment_or_space(token):
+    return isinstance(token, Comment) or \
+        token.ttype in (T.Comment, T.Comment.Single, T.Comment.Multiline,
+                        T.Newline, T.Whitespace)
+
+
 def is_newline_statement(statement):
     for token in statement.tokens[:]:
         if token.ttype is not T.Newline:
@@ -47,11 +54,12 @@ 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]
-            if token.ttype in (T.Comment.Single, T.Comment.Multiline,
-                               T.Newline, T.Whitespace):
+            if is_comment_or_space(token):
                 continue
             if token.ttype is T.Punctuation and token.value == ';':
                 break  # The last statement is complete
@@ -71,8 +79,9 @@ class StatementGrouper(object):
             return
         tokens = parse(''.join(self.lines), encoding=self.encoding)
         for token in tokens:
-            if (token.ttype not in (T.Comment.Single, T.Comment.Multiline,
-                                    T.Newline, T.Whitespace)):
+            if not is_comment_or_space(token):
                 raise ValueError("Incomplete SQL statement: %s" %
                                  tokens)
+        self.lines = []
+        self.statements = []
         return tokens