[lit] Avoid use of iterator .next() method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187858 91177308-0d34-0410-b5e6-96231b3b80d8

utils/lit/lit/ShUtil.py

@@ -174,16 +174,15 @@ class ShParser:
         self.tokens = ShLexer(data, win32Escapes = win32Escapes).lex()
     
     def lex(self):
-        try:
-            return self.tokens.next()
-        except StopIteration:
-            return None
+        for item in self.tokens:
+            return item
+        return None
     
     def look(self):
-        next = self.lex()
-        if next is not None:
-            self.tokens = itertools.chain([next], self.tokens)
-        return next
+        token = self.lex()
+        if token is not None:
+            self.tokens = itertools.chain([token], self.tokens)
+        return token
     
     def parse_command(self):
         tok = self.lex()

utils/lit/lit/main.py

@@ -94,10 +94,9 @@ class TestProvider:
         if self.canceled:
           self.lock.release()
           return None
-
-        try:
-            item = self.iter.next()
-        except StopIteration:
+        for item in self.iter:
+            break
+        else:
             item = None
         self.lock.release()
         return item