config: Add merge!() macros to reduce boilerplate

1 files changed, 37 insertions, 0 deletions

diff --git a/niri-config/src/macros.rs b/niri-config/src/macros.rs
new file mode 100644
index 00000000..380111e2
--- /dev/null
+++ b/niri-config/src/macros.rs
@@ -0,0 +1,37 @@
+macro_rules! merge_clone_opt {
+    (($self:expr, $part:expr), $($field:ident),+ $(,)*) => {
+        $(
+            if $part.$field.is_some() {
+                $self.$field.clone_from(&$part.$field);
+            }
+        )+
+    };
+}
+
+macro_rules! merge_color_gradient_opt {
+    (($self:expr, $part:expr), $(($color:ident, $gradient:ident)),+ $(,)*) => {
+        $(
+            if let Some(x) = $part.$color {
+                $self.$color = Some(x);
+                $self.$gradient = None;
+            }
+            if let Some(x) = $part.$gradient {
+                $self.$gradient = Some(x);
+            }
+        )+
+    };
+}
+
+macro_rules! merge_on_off {
+    (($self:expr, $part:expr)) => {
+        if $part.off {
+            $self.off = true;
+            $self.on = false;
+        }
+
+        if $part.on {
+            $self.off = false;
+            $self.on = true;
+        }
+    };
+}