1 files changed, 21 insertions, 0 deletions
diff --git a/mingling_picker/src/builtin/pick_flag.rs b/mingling_picker/src/builtin/pick_flag.rs
new file mode 100644
index 0000000..b642a9a
--- /dev/null
+++ b/mingling_picker/src/builtin/pick_flag.rs
@@ -0,0 +1,21 @@
+use crate::parselib::{FlagMatcher, Matcher};
+use crate::pickable_needed::*;
+use crate::value::Flag;
+
+impl<'a> Pickable<'a> for Flag {
+    fn get_attr(_: &'a PickerArg<'a, Self>) -> PickerArgAttr {
+        PickerArgAttr::Flag
+    }
+
+    fn tag(ctx: TagPhaseContext) -> Vec<usize> {
+        FlagMatcher::match_all(ctx.into())
+    }
+
+    fn pick(raw_strs: &[&str]) -> PickerArgResult<Self> {
+        if raw_strs.is_empty() {
+            PickerArgResult::Parsed(Flag::Inactive)
+        } else {
+            PickerArgResult::Parsed(Flag::Active)
+        }
+    }
+}