Implementation of general objects' [[GetOwnProperty]], [[GetProperty]], [[CanPut]], [[HasProperty]], [[Delete]]; partial implementation of general objects' [[Get]], [[Put]], [[DefineOwnProperty]].

src/libecmaoperations/ecma-conversion.c

@@ -74,6 +74,79 @@ ecma_op_check_object_coercible( ecma_value_t value) /**< ecma-value */
   return ecma_make_empty_completion_value();
 } /* ecma_op_check_object_coercible */
 
+/**
+ * SameValue operation.
+ *
+ * See also:
+ *          ECMA-262 v5, 9.12
+ *
+ * @return true - if the value are same according to ECMA-defined SameValue algorithm,
+ *         false - otherwise.
+ */
+bool
+ecma_op_same_value( ecma_value_t x, /**< ecma-value */
+                    ecma_value_t y) /**< ecma-value */
+{
+  const bool is_x_undefined = ecma_is_value_undefined( x);
+  const bool is_x_null = ecma_is_value_null( x);
+  const bool is_x_boolean = ecma_is_value_boolean( x);
+  const bool is_x_number = ( x.value_type == ECMA_TYPE_NUMBER );
+  const bool is_x_string = ( x.value_type == ECMA_TYPE_STRING );
+  const bool is_x_object = ( x.value_type == ECMA_TYPE_OBJECT );
+
+  const bool is_y_undefined = ecma_is_value_undefined( y);
+  const bool is_y_null = ecma_is_value_null( y);
+  const bool is_y_boolean = ecma_is_value_boolean( y);
+  const bool is_y_number = ( y.value_type == ECMA_TYPE_NUMBER );
+  const bool is_y_string = ( y.value_type == ECMA_TYPE_STRING );
+  const bool is_y_object = ( y.value_type == ECMA_TYPE_OBJECT );
+
+  const bool is_types_equal = ( ( is_x_undefined && is_y_undefined )
+                                || ( is_x_null && is_y_null )
+                                || ( is_x_boolean && is_y_boolean )
+                                || ( is_x_number && is_y_number )
+                                || ( is_x_string && is_y_string )
+                                || ( is_x_object && is_y_object ) );
+
+  if ( !is_types_equal )
+    {
+      return false;
+    }
+
+  if ( is_x_undefined
+       || is_x_null )
+    {
+      return true;
+    }
+
+  if ( is_x_number )
+    {
+      TODO( Implement according to ECMA );
+
+      ecma_number_t *x_num_p = (ecma_number_t*)ecma_get_pointer( x.value);
+      ecma_number_t *y_num_p = (ecma_number_t*)ecma_get_pointer( y.value);
+
+      return ( *x_num_p == *y_num_p );
+    }
+
+  if ( is_x_string )
+    {
+      ecma_array_first_chunk_t* x_str_p = (ecma_array_first_chunk_t*)( ecma_get_pointer(x.value) );
+      ecma_array_first_chunk_t* y_str_p = (ecma_array_first_chunk_t*)( ecma_get_pointer(y.value) );
+
+      return ecma_compare_ecma_string_to_ecma_string( x_str_p, y_str_p);  
+    }
+
+  if ( is_x_boolean )
+    {
+      return ( ecma_is_value_true( x) == ecma_is_value_true( y) );
+    }
+
+  JERRY_ASSERT( is_x_object );
+
+  return ( ecma_get_pointer( x.value) == ecma_get_pointer( y.value) );
+} /* ecma_op_same_value */
+
 /**
  * ToPrimitive operation.
  *