Rework function call. (#2414)

Furthermore add a construct flag, which disallows calling certain
functions without new. Constructing bound arrow functions correctly
throws error now.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

Author: zherczeg

jerry-core/ecma/builtin-objects/ecma-builtins.c

@@ -204,6 +204,22 @@ ecma_builtin_get (ecma_builtin_id_t builtin_id) /**< id of built-in to check on
   return JERRY_CONTEXT (ecma_builtin_objects)[builtin_id];
 } /* ecma_builtin_get */
 
+/**
+ * Get reference to the global object
+ *
+ * Note:
+ *   Does not increase the reference counter.
+ *
+ * @return pointer to the global object
+ */
+inline ecma_object_t * JERRY_ATTR_ALWAYS_INLINE
+ecma_builtin_get_global (void)
+{
+  JERRY_ASSERT (JERRY_CONTEXT (ecma_builtin_objects)[ECMA_BUILTIN_ID_GLOBAL] != NULL);
+
+  return JERRY_CONTEXT (ecma_builtin_objects)[ECMA_BUILTIN_ID_GLOBAL];
+} /* ecma_builtin_get_global */
+
 /**
  * Checks whether the given function is a built-in routine
  *

jerry-core/ecma/builtin-objects/ecma-builtins.h

@@ -96,6 +96,8 @@ bool
 ecma_builtin_is (ecma_object_t *obj_p, ecma_builtin_id_t builtin_id);
 ecma_object_t *
 ecma_builtin_get (ecma_builtin_id_t builtin_id);
+ecma_object_t *
+ecma_builtin_get_global (void);
 bool
 ecma_builtin_function_is_routine (ecma_object_t *func_obj_p);