Rework Map object (#2760)

This patch reworks the core of the builtin Map object.

Advantages:
 - Provide sublinear access time for the elements via Lcache and property hashmap
 - This implementation is suitable for the builtin Set object as well

Also add the missing 'forEach' routine for the builtin object as well.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu

jerry-core/ecma/builtin-objects/ecma-builtin-map-prototype.c

@@ -65,6 +65,24 @@ ecma_builtin_map_prototype_object_delete (ecma_value_t this_arg, /**< this argum
   return ecma_op_map_delete (this_arg, key_arg);
 } /* ecma_builtin_map_prototype_object_delete */
 
+/**
+ * The Map.prototype object's 'forEach' routine
+ *
+ * See also:
+ *          ECMA-262 v6, 23.1.3.5
+ *
+ * @return ecma value
+ *         Returned value must be freed with ecma_free_value.
+ */
+static ecma_value_t
+ecma_builtin_map_prototype_object_foreach (ecma_value_t this_arg, /**< this argument */
+                                           ecma_value_t predicate, /**< callback function */
+                                           ecma_value_t predicate_this_arg) /**< this argument for
+                                                                             *   invoke predicate */
+{
+  return ecma_op_map_foreach (this_arg, predicate, predicate_this_arg);
+} /* ecma_builtin_map_prototype_object_foreach */
+
 /**
  * The Map.prototype object's 'get' routine
  *

jerry-core/ecma/builtin-objects/ecma-builtin-map-prototype.inc.h

@@ -40,6 +40,7 @@ STRING_VALUE (LIT_GLOBAL_SYMBOL_TO_STRING_TAG,
  *  (property name, C routine name, arguments number or NON_FIXED, value of the routine's length property) */
 ROUTINE (LIT_MAGIC_STRING_CLEAR, ecma_builtin_map_prototype_object_clear, 0, 0)
 ROUTINE (LIT_MAGIC_STRING_DELETE, ecma_builtin_map_prototype_object_delete, 1, 1)
+ROUTINE (LIT_MAGIC_STRING_FOR_EACH_UL, ecma_builtin_map_prototype_object_foreach, 2, 1)
 ROUTINE (LIT_MAGIC_STRING_GET, ecma_builtin_map_prototype_object_get, 1, 1)
 ROUTINE (LIT_MAGIC_STRING_HAS, ecma_builtin_map_prototype_object_has, 1, 1)
 ROUTINE (LIT_MAGIC_STRING_SET, ecma_builtin_map_prototype_object_set, 2, 2)