Required positional arguments must come before optional ones

andrey-zherikov · Nov 6, 2023 · 2eedcc4 · 2eedcc4
1 parent 74c9991
commit 2eedcc4
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/source/argparse/internal/command.d b/source/argparse/internal/command.d
@@ -291,6 +291,9 @@ package(argparse) Command createCommand(Config config, COMMAND_TYPE, CommandInfo
 
         static if(pos < positionalArgs.length - 1)
             static assert(info.minValuesCount.get == info.maxValuesCount.get, "Positional argument with index "~pos.stringof~" in "~COMMAND_TYPE.stringof~" has variable number of values.");
+
+        static if(i > 0 && info.required)
+            static assert(positionalArgs[i-1].required, "Required positional argument with index "~pos.stringof~" comes after optional positional argument");
     }}
 
     static foreach(info; argumentInfos)