Fix for crash on "foo == bar == fo...

[Jon Snell]

This was causing javascriptlint to crash:

var foo = 1;
var bar = 2;

alert(foo == foo == 3);

This fixes it:

Index: javascriptlint/warnings.py

-- javascriptlint/warnings.py (revision 303)
+++ javascriptlint/warnings.py (working copy)
@@ -269,9 +269,16 @@

@lookfor(tok.EQOP,tok.RELOP)
def useless_comparison(node):
-    lvalue, rvalue = node.kids
-    if lvalue.is_equivalent(rvalue):
-        raise LintWarning, node
+    if (len(node.kids) > 2):
+        for i in range(0,len(node.kids)-1):
+            lvalue = node.kids_
+            rvalue = node.kids
+            if lvalue.is_equivalent(rvalue):
+                raise LintWarning, node
+    else:
+        lvalue, rvalue = node.kids
+        if lvalue.is_equivalent(rvalue):
+            raise LintWarning, node

@lookfor((tok.COLON, op.NAME))
def use_of_label(node):_

[Matthias Miller]

Good catch! Fixed in r315.