Bug 503395 - Ttcn3Parser: handle erroneous global template variable

Signed-off-by: earplov <arpad.lovassy@ericsson.com>

org.eclipse.titan.designer/src/org/eclipse/titan/designer/parsers/ttcn3parser/Ttcn3Parser.g4

@@ -631,7 +631,19 @@ pr_ModuleDef returns [List<Definition> definitions]
 (	(	m = pr_Visibility { modifier = $m.modifier; }	)?
 	(	d1 = pr_TypeDef { if($d1.def_type != null) { $definitions.add($d1.def_type); } }
 	|	d2 = pr_ConstDef { if($d2.array != null) { $definitions.addAll($d2.array); } }
-	|	d3 = pr_TemplateDef { if($d3.def_template != null) { $definitions.add($d3.def_template); } }
+	|	{	boolean isTemplateVar = false;	}
+		(	pr_VarKeyword	{	isTemplateVar = true;	}	)?
+		d3 = pr_TemplateDef
+		{
+			final Def_Template templateDef = $d3.def_template;
+			if ( isTemplateVar ) {
+				final String templateName = templateDef != null ? " `" + templateDef.getIdentifier() + "'" : "";
+				reportError( "Code generation for global template variable" + templateName + " is not supported", $start, $d3.stop );
+			}
+			else if ( $d3.def_template != null ) {
+				$definitions.add( $d3.def_template );
+			}
+		}
 	|	d4 = pr_FunctionDef { if($d4.def_func != null) { $definitions.add($d4.def_func); } }
 	|	d5 = pr_SignatureDef { if($d5.def_type != null) { $definitions.add($d5.def_type); } }
 	|	d6 = pr_TestcaseDef { if($d6.def_testcase != null) { $definitions.add($d6.def_testcase); } }