[Python-checkins] r64917 - python/branches/tlee-ast-optimize/Python/optimize.c

[thomas.lee]

Author: thomas.lee
Date: Sun Jul 13 17:16:36 2008
New Revision: 64917

Log:
Added a comment describing the if/else translation for tests with a unary not.

Modified:
   python/branches/tlee-ast-optimize/Python/optimize.c

Modified: python/branches/tlee-ast-optimize/Python/optimize.c
==============================================================================
--- python/branches/tlee-ast-optimize/Python/optimize.c	(original)
+++ python/branches/tlee-ast-optimize/Python/optimize.c	Sun Jul 13 17:16:36 2008
@@ -1314,6 +1314,9 @@
     if (!optimize_stmt_seq(opt, &stmt->v.If.orelse))
         return 0;
 
+    /* BEFORE: if not <A>: <B>; else: <C>
+     * AFTER:  if <A>: <C>; else: <B>
+     */
     if (stmt->v.If.test->kind == UnaryOp_kind &&
             stmt->v.If.test->v.UnaryOp.op == Not) {
         asdl_seq* body = stmt->v.If.orelse;