1 files changed, 85 insertions, 0 deletions
diff --git a/src/components/script/dom/bindings/proxyhandler.rs b/src/components/script/dom/bindings/proxyhandler.rs
new file mode 100644
index 00000000000..f073f54d8c1
--- /dev/null
+++ b/src/components/script/dom/bindings/proxyhandler.rs
@@ -0,0 +1,85 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use js::jsapi::{JSContext, jsid, JSPropertyDescriptor, JSObject, JSString, jschar};
+use js::jsapi::bindgen::{JS_GetPropertyDescriptorById, JS_NewUCString, JS_malloc, JS_free};
+use js::glue::bindgen::{RUST_JSVAL_IS_VOID, RUST_JSVAL_TO_OBJECT, GetProxyExtra};
+use js::glue::bindgen::{GetObjectProto};
+
+use core::sys::size_of;
+
+type c_bool = libc::c_int;
+
+pub extern fn getPropertyDescriptor(cx: *JSContext, proxy: *JSObject, id: jsid,
+                                set: c_bool, desc: *mut JSPropertyDescriptor) -> c_bool {
+  unsafe {
+    if _getOwnPropertyDescriptor(cx, proxy, id, set, desc) == 0 {
+        return 0;
+    }
+    if (*desc).obj.is_not_null() {
+        return 1;
+    }
+
+    //let proto = JS_GetPrototype(proxy);
+    let proto = GetObjectProto(proxy);
+    if proto.is_null() {
+        (*desc).obj = ptr::null();
+        return 1;
+    }
+
+    JS_GetPropertyDescriptorById(cx, proto, id, 0x01 /*JSRESOLVE_QUALIFIED*/,
+                                 cast::transmute(desc))
+  }
+}
+
+fn _getOwnPropertyDescriptor(cx: *JSContext, proxy: *JSObject, id: jsid,
+                             _set: c_bool, desc: *mut JSPropertyDescriptor) -> c_bool {
+  unsafe {
+    let v = GetProxyExtra(proxy, 0 /*JSPROXYSLOT_EXPANDO*/);
+    if RUST_JSVAL_IS_VOID(v) == 0 {
+        let expando = RUST_JSVAL_TO_OBJECT(v);
+        if JS_GetPropertyDescriptorById(cx, expando, id, 0x01 /*JSRESOLVE_QUALIFIED*/,
+                                        cast::transmute(desc)) == 0 {
+            return 0;
+        }
+        if (*desc).obj.is_not_null() {
+            (*desc).obj = proxy;
+            return 1;
+        }
+    }
+    (*desc).obj = ptr::null();
+    1
+  }
+}
+
+pub extern fn getOwnPropertyDescriptor(cx: *JSContext, proxy: *JSObject, id: jsid,
+                                   set: c_bool, desc: *mut JSPropertyDescriptor) -> c_bool {
+    _getOwnPropertyDescriptor(cx, proxy, id, set, desc)
+}
+
+pub fn _obj_toString(cx: *JSContext, className: *libc::c_char) -> *JSString {
+  unsafe {
+    let name = str::raw::from_buf(className as *u8);
+    let nchars = "[object ]".len() + name.len();
+    let chars: *mut jschar = cast::transmute(JS_malloc(cx, (nchars + 1) as u64 * (size_of::<jschar>() as u64)));
+    if chars.is_null() {
+        return ptr::null();
+    }
+
+    let result = ~"[object " + name + ~"]";
+    for result.each_chari |i, c| {
+      *chars.offset(i) = c as jschar;
+    }
+    *chars.offset(nchars) = 0;
+    let jsstr = JS_NewUCString(cx, cast::transmute(chars), nchars as u64);
+    if jsstr.is_null() {
+        JS_free(cx, cast::transmute(chars));
+    }
+    jsstr
+  }
+}
+
+pub fn GetExpandoObject(_proxy: *JSObject) -> *JSObject {
+    ptr::null()
+}
+\ No newline at end of file