Scribunto: Fix script error 'NullPointerException' on a few en.w pages

400_xowa/src/gplx/langs/phps/Php_srl_parser.java

@@ -30,6 +30,7 @@ public class Php_srl_parser {
 		return rv;
 	}
 	Keyval Xto_kv(Php_srl_itm_kv itm) {
+		if (itm == null) return null;
 		Php_srl_itm itm_key = itm.Key();
 		Object key = itm_key == null ? null : itm_key.Val();
 		Php_srl_itm itm_val = itm.Val();
@@ -72,6 +73,13 @@ public class Php_srl_parser {
 		for (int i = 0; i < subs_len; i++) {
 			Php_srl_itm_kv kv = factory.Kv();
 			Php_srl_itm key_itm = Parse_itm(pos);
+
+			// handle null kv; PAGE:en.w:Abziri DATE:2017-11-29
+			if (	key_itm.Tid() == Php_srl_itm_.Tid_string 
+				&&	String_.Eq(Php_srl_parser.NULL_ARRAY_ITEM, (String)key_itm.Val())) {
+				rv.Subs_add(null);
+				continue;
+			} 
 			kv.Key_(key_itm);
 			Php_srl_itm val_itm = Parse_itm(pos);
 			kv.Val_(val_itm);
@@ -191,6 +199,7 @@ public class Php_srl_parser {
 		String msg = String_.Format(fmt, args) + " " + Int_.To_str(bgn) + " " + String_.new_u8__by_len(raw, bgn, 20);
 		return Err_.new_wo_type(msg);
 	}
+	public static final String NULL_ARRAY_ITEM = "NULL_ARRAY_ITEM";
 }
 class Php_srl_factory {
 	public Php_srl_itm		Nil()									{return Php_srl_itm_nil.Nil;}

400_xowa/src/gplx/xowa/parsers/tmpls/Xot_invk_mock.java

@@ -63,6 +63,10 @@ public class Xot_invk_mock implements Xot_invk {
 		int len = args.length;
 		for (int i = 0; i < len; i++) {
 			Keyval kv = args[i];
+
+			// handle null kv; PAGE:en.w:Abziri DATE:2017-11-29
+			if (kv == null) continue;
+
 			String kv_key_str = kv.Key();
 			Object kv_key_obj = kv.Key_as_obj();
 			Arg_nde_tkn_mock nde_tkn = null;

400_xowa/src/gplx/xowa/xtns/scribunto/Scrib_invoke_func_fxt.java

@@ -228,8 +228,13 @@ class Scrib_lua_rsp_bldr {
 		bfr.Add_str_a7("a:").Add_int_variable(len).Add_str_a7(":{");
 		for (int i = 0; i < len; i++) {
 			Keyval kv = ary[i];
-			Bld_obj(bfr, kv.Key_as_obj());
-			Bld_obj(bfr, kv.Val());
+			if (kv == null) { // handle null kv; PAGE:en.w:Abziri DATE:2017-11-29
+				Bld_obj(bfr, gplx.langs.phps.Php_srl_parser.NULL_ARRAY_ITEM);
+			}
+			else {
+				Bld_obj(bfr, kv.Key_as_obj());
+				Bld_obj(bfr, kv.Val());
+			}
 		}
 		bfr.Add_byte(Byte_ascii.Curly_end);
 	}

400_xowa/src/gplx/xowa/xtns/scribunto/libs/Scrib_lib_mw.java

@@ -388,6 +388,15 @@ class Scrib_lib_mw_callParserFunction_sorter implements gplx.core.lists.Comparer
 	public int compare(Object lhsObj, Object rhsObj) {
 		Keyval lhs = (Keyval)lhsObj;
 		Keyval rhs = (Keyval)rhsObj;
+
+		// handle null kv; PAGE:en.w:Abziri DATE:2017-11-29
+		if		(lhs == null && rhs == null)
+			return CompareAble_.Same;
+		else if (lhs == null)
+			return CompareAble_.More;
+		else if (rhs == null)
+			return CompareAble_.Less;
+
 		Object lhs_key = lhs.Key_as_obj();
 		Object rhs_key = rhs.Key_as_obj();
 		boolean lhs_is_int = Type_.Eq(lhs_key.getClass(), Int_.Cls_ref_type);

400_xowa/src/gplx/xowa/xtns/scribunto/libs/Scrib_lib_mw__invoke_tst.java

@@ -87,6 +87,10 @@ public class Scrib_lib_mw__invoke_tst {
 		fxt.Test_lib_proc_kv(lib, Scrib_lib_mw.Invk_callParserFunction, Scrib_kv_utl_.base1_many_ary_("current", "DISPLAYTITLE", "''a''"), "");
 		Tfds.Eq("<i>a</i>", String_.new_a7(fxt.Parser_fxt().Ctx().Page().Html_data().Display_ttl()));
 	}
+	@Test  public void CallParserFunction__null() {	// PURPOSE.fix: null arg should not fail; PAGE:en.w:Abziri DATE:2017-11-29
+		fxt.Init_page("{{#invoke:Mod_0|Prc_0}}");
+		fxt.Test_lib_proc_kv(lib, Scrib_lib_mw.Invk_callParserFunction, Scrib_kv_utl_.flat_many_(1, "current", 2, "#coordinates", 3, Keyval_.Ary(Keyval_.int_(1, "a"), Keyval_.int_(3, "b"), null)), "");// failed with NullPointerException
+	}
 	@Test  public void ExpandTemplate_tmpl() {
 		fxt.Init_page("{{#invoke:Mod_0|Prc_0}}");
 		fxt.Parser_fxt().Data_create("Template:A", "b{{{key1}}}c");