Trying to move derived get trap from builtins to global context.

src/proxy.js

Index: src/proxy.js
diff --git a/src/proxy.js b/src/proxy.js
index 01d48b485ac193a19c6cc681b4e88a1533f56945..13a4312d8894b8f900426fad7e60e778630f1aa2 100644
--- a/src/proxy.js
+++ b/src/proxy.js
@@ -63,3 +63,21 @@ $Proxy.create = function(handler, proto) {
   if (!IS_SPEC_OBJECT(proto)) proto = $Object.prototype
   return %CreateJSProxy(handler, proto)
 }
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// Builtins
+////////////////////////////////////////////////////////////////////////////////
+
+function DERIVED_GET_TRAP(receiver, name) {

[Mads Ager (chromium), 2011/05/18 13:11:33]

Let's change the naming here: DerivedGetTrap?

[rossberg, 2011/05/18 13:34:57]

Done.

+  var desc = this.getPropertyDescriptor(name)
+  if (IS_UNDEFINED(desc)) { return desc; }
+  if ('value' in desc) {
+    return desc.value
+  } else {
+    if (IS_UNDEFINED(desc.get)) { return desc.get; }
+    return desc.get().call(receiver)  // The proposal says so...

[Mads Ager (chromium), 2011/05/18 13:11:33]

Does the proposal even say to use Function.prototype.call? That one can get
overwritten by user code to do something else? If is just says to perform a call
you can use the %_CallFunction support in our natives to make this independent
of Function.prototype.call.

[rossberg, 2011/05/18 13:34:57]

Good question. The spec gives it literally in JS code, using `call' like here,
so it's not clear what the real intention is. I'm also puzzled about passing
`receiver'. I've put that on my list of questions regarding proxy semantics.

In any case, the extra () where a typo on my side. :)

+  }
+}