+added function overriding support of the ITERATOR statement.

HISTORY

@@ -1,3 +1,6 @@
+Jul. 4 2017
+Added function overriding support of the ITERATOR statement
+
 Jul. 3 2017
 Fixed a disposing bug with non-referenced array
 

README.md

@@ -11,7 +11,7 @@
 [![Build status](https://travis-ci.org/paladin-t/my_basic.svg?branch=master)](https://travis-ci.org/paladin-t/my_basic)
 [![MIT license](http://img.shields.io/badge/license-MIT-brightgreen.svg)](http://opensource.org/licenses/MIT)
 
-[简体中文](https://github.com/paladin-t/my_basic/wiki/%E7%94%B1%E7%BA%AF-C-%E8%AF%AD%E8%A8%80%E7%BC%96%E5%86%99%E7%9A%84-BASIC-%E8%84%9A%E6%9C%AC%E8%A7%A3%E9%87%8A%E5%99%A8), [捐款](https://github.com/paladin-t/my_basic/wiki/%E7%94%B1%E7%BA%AF-C-%E8%AF%AD%E8%A8%80%E7%BC%96%E5%86%99%E7%9A%84-BASIC-%E8%84%9A%E6%9C%AC%E8%A7%A3%E9%87%8A%E5%99%A8#%E6%8D%90%E6%AC%BE)
+[简体中文](https://github.com/paladin-t/my_basic/wiki/%E7%94%B1%E7%BA%AF-C-%E8%AF%AD%E8%A8%80%E7%BC%96%E5%86%99%E7%9A%84-BASIC-%E8%84%9A%E6%9C%AC%E8%A7%A3%E9%87%8A%E5%99%A8)
 
 [开发日志](http://blog.sina.com.cn/s/articlelist_1584387113_12_1.html)
 
@@ -38,6 +38,8 @@ The prefix "MY-" in the name means either literally "My" or "Make Your", it's up
 
 It fits well on a large scale of Workstation, PC, Tablet, Pad, Mobile Phone, PDA, Video Game Console, Raspberry Pi, Intel Edison, Arduino and even MCU; totally portable to Windows, macOS, Unix, Linux, iOS, Android, RTOS, etc.
 
+May be used as an alternative of something like Lua.
+
 **For Arduino**
 
 There is a MY-BASIC interpreter porting of Arduino, with a totally rewritten shell and user manual. Please see [MY-BASIC ARDU](https://my-basic.github.io/my_basic_ardu/).

core/my_basic.c

@@ -10661,7 +10661,7 @@ static int _execute_ranged_for_loop(mb_interpreter_t* s, _ls_node_t** l, _var_t*
 	_object_t* old_val = 0;
 	_object_t range;
 	_ls_node_t* to_node = 0;
-	_object_t* range_ptr;
+	_object_t* range_ptr = 0;
 	_list_it_t* lit = 0;
 	_dict_it_t* dit = 0;
 	_list_it_t* tlit = 0;
@@ -18094,6 +18094,7 @@ static int _coll_iterator(mb_interpreter_t* s, void** l) {
 	_list_it_t* lit = 0;
 	_dict_it_t* dit = 0;
 	mb_value_t ret;
+	mb_meta_status_e os = MB_MS_NONE;
 
 	mb_assert(s && l);
 
@@ -18103,9 +18104,8 @@ static int _coll_iterator(mb_interpreter_t* s, void** l) {
 	_mb_check_mark_exit(mb_attempt_open_bracket(s, l), result, _exit);
 
 	_mb_check_mark_exit(mb_pop_value(s, l, &coll), result, _exit);
-
-	_mb_check_mark_exit(mb_attempt_close_bracket(s, l), result, _exit);
-
+	os = _try_overridden(s, l, &coll, _COLL_ID_ITERATOR, MB_MF_COLL);
+	if((os & MB_MS_DONE) == MB_MS_NONE) {
 		_MAKE_NIL(&ocoll);
 		switch(coll.type) {
 		case MB_DT_LIST:
@@ -18127,8 +18127,13 @@ static int _coll_iterator(mb_interpreter_t* s, void** l) {
 
 			break;
 		}
+	}
 
+	_mb_check_mark_exit(mb_attempt_close_bracket(s, l), result, _exit);
+
+	if((os & MB_MS_RETURNED) == MB_MS_NONE) {
 		_mb_check_mark_exit(mb_push_value(s, l, ret), result, _exit);
+	}
 
 _exit:
 	_assign_public_value(&coll, 0);

donate.html

@@ -84,10 +84,6 @@ DO NOT CHANGE THIS FILE.
                 <input type="image" src="https://www.paypalobjects.com/en_GB/i/btn/btn_paynowCC_LG.gif" border="0" name="submit" alt="PayPal – The safer, easier way to pay online!">
                 <img alt="" border="0" src="https://www.paypalobjects.com/zh_XC/i/scr/pixel.gif" width="1" height="1">
             </form>
-
-            <p>
-                中国用户可选择通过<a href="https://github.com/paladin-t/my_basic/wiki/%E7%94%B1%E7%BA%AF-C-%E8%AF%AD%E8%A8%80%E7%BC%96%E5%86%99%E7%9A%84-BASIC-%E8%84%9A%E6%9C%AC%E8%A7%A3%E9%87%8A%E5%99%A8#%E6%8D%90%E6%AC%BE">微信扫码</a>捐款。
-            </p>
             <hr />
 
             <h2>Questions</h2>