[pypy-commit] lang-js default: allow for loops with missing setup, condition and update

[stepahn]

Author: Stephan <step...@stzal.com>
Branch: 
Changeset: r76:e6b560437221
Date: 2011-05-18 17:48 +0200
http://bitbucket.org/pypy/lang-js/changeset/e6b560437221/

Log:    allow for loops with missing setup, condition and update

diff --git a/js/astbuilder.py b/js/astbuilder.py
--- a/js/astbuilder.py
+++ b/js/astbuilder.py
@@ -443,6 +443,16 @@
             condition = operations.Boolean(pos, True)
         update, i = self.get_next_expr(node, i)
         body, i = self.get_next_expr(node, i)
+
+        if setup is None:
+            setup = operations.EmptyExpression(pos)
+        if condition is None:
+            condition = operations.Boolean(pos, True)
+        if update is None:
+            update = operations.EmptyExpression(pos)
+        if body is None:
+            body = operations.EmptyExpression(pos)
+
         return operations.For(pos, setup, condition, update, body)
     visit_regularvarfor = visit_regularfor
 
diff --git a/js/test/test_interp.py b/js/test/test_interp.py
--- a/js/test/test_interp.py
+++ b/js/test/test_interp.py
@@ -808,3 +808,38 @@
       }
       n;
     """, 400
+
+def test_partial_for_loop():
+    yield assertv, """
+    var i = 0;
+    for(;;){
+      i++;
+      if(i == 2)
+          break;
+    }
+    i;
+    """, 2
+    yield assertv, """
+    var i = 0;
+    for(;;i++){
+      if(i == 2)
+          break;
+    }
+    i;
+    """, 2
+    yield assertv, """
+    var i = 0;
+    for(i = 2;;){
+      if(i == 2)
+          break;
+      i = 99;
+    }
+    i;
+    """, 2
+    yield assertv, """
+    var i = 0;
+    for(;i <= 1;){
+        i++;
+    }
+    i;
+    """, 2
_______________________________________________
pypy-commit mailing list
pypy-commit@python.org
http://mail.python.org/mailman/listinfo/pypy-commit