expose typeof via emscripten::val

4 files changed, 28 insertions, 1 deletions

diff --git a/src/embind/emval.js b/src/embind/emval.js
index 4007701a..ebec3881 100644
--- a/src/embind/emval.js
+++ b/src/embind/emval.js
@@ -286,3 +286,8 @@ function __emval_has_function(handle, name) {
     name = getStringOrSymbol(name);
     return handle[name] instanceof Function;
 }
+
+function __emval_typeof(handle) {
+    handle = requireHandle(handle);
+    return __emval_register(typeof handle);
+}
diff --git a/system/include/emscripten/val.h b/system/include/emscripten/val.h
index e217c959..bfd8610a 100644
--- a/system/include/emscripten/val.h
+++ b/system/include/emscripten/val.h
@@ -62,6 +62,7 @@ namespace emscripten {
             bool _emval_has_function(
                 EM_VAL value,
                 const char* methodName);
+            EM_VAL _emval_typeof(EM_VAL value);
         }
 
         template<const char* address> 
@@ -254,7 +255,6 @@ namespace emscripten {
         // * delete
         // * in
         // * instanceof
-        // * typeof
         // * ! ~ - + ++ --
         // * * / %
         // * + -
@@ -411,6 +411,10 @@ namespace emscripten {
             return fromGenericWireType<T>(result);
         }
 
+        val typeof() const {
+            return val(_emval_typeof(handle));
+        }
+
     private:
         // takes ownership, assumes handle already incref'd
         explicit val(internal::EM_VAL handle)
diff --git a/tests/embind/embind.test.js b/tests/embind/embind.test.js
index 3ded811a..53d3988a 100644
--- a/tests/embind/embind.test.js
+++ b/tests/embind/embind.test.js
@@ -2030,6 +2030,16 @@ module({
             assert.equal(65538, instance.c);
         });
     });
+
+    BaseFixture.extend("typeof", function() {
+        test("typeof", function() {
+            assert.equal("object", cm.getTypeOfVal(null));
+            assert.equal("object", cm.getTypeOfVal({}));
+            assert.equal("function", cm.getTypeOfVal(function(){}));
+            assert.equal("number", cm.getTypeOfVal(1));
+            assert.equal("string", cm.getTypeOfVal("hi"));
+        });
+    });
 });
 
 /* global run_all_tests */
diff --git a/tests/embind/embind_test.cpp b/tests/embind/embind_test.cpp
index 5a83903a..52103bbb 100644
--- a/tests/embind/embind_test.cpp
+++ b/tests/embind/embind_test.cpp
@@ -2368,3 +2368,11 @@ EMSCRIPTEN_BINDINGS(val_new_) {
     function("construct_with_memory_view", &construct_with_memory_view);
     function("construct_with_ints_and_float", &construct_with_ints_and_float);
 }
+
+std::string getTypeOfVal(const val& v) {
+    return v.typeof().as<std::string>();
+}
+
+EMSCRIPTEN_BINDINGS(typeof) {
+    function("getTypeOfVal", &getTypeOfVal);
+}