Merge pull request #1126 from imvu/more_embind_updates

More embind updates

1 files changed, 26 insertions, 0 deletions

diff --git a/src/embind/embind.js b/src/embind/embind.js
index 988526b4..cadee700 100755
--- a/src/embind/embind.js
+++ b/src/embind/embind.js
@@ -1054,6 +1054,32 @@ function getInstanceTypeName(handle) {
     return handle.$$.ptrType.registeredClass.name;
 }
 
+ClassHandle.prototype.isAliasOf = function(other) {
+    if (!(this instanceof ClassHandle)) {
+        return false;
+    }
+    if (!(other instanceof ClassHandle)) {
+        return false;
+    }
+
+    var leftClass = this.$$.ptrType.registeredClass;
+    var left = this.$$.ptr;
+    var rightClass = other.$$.ptrType.registeredClass;
+    var right = other.$$.ptr;
+
+    while (leftClass.baseClass) {
+        left = leftClass.upcast(left);
+        leftClass = leftClass.baseClass;
+    }
+
+    while (rightClass.baseClass) {
+        right = rightClass.upcast(right);
+        rightClass = rightClass.baseClass;
+    }
+    
+    return leftClass === rightClass && left === right;
+};
+
 ClassHandle.prototype.clone = function() {
     if (!this.$$.ptr) {
         throwBindingError(getInstanceTypeName(this) + ' instance already deleted');