Add help system with `#[help]` macro and `HelpRequest` trait

1 files changed, 10 insertions, 0 deletions

diff --git a/mingling_core/src/asset/help.rs b/mingling_core/src/asset/help.rs
new file mode 100644
index 0000000..ff2b3d4
--- /dev/null
+++ b/mingling_core/src/asset/help.rs
@@ -0,0 +1,10 @@
+use crate::RenderResult;
+
+/// Handles help rendering for command-line arguments
+pub trait HelpRequest {
+    /// The entry type
+    type Entry;
+
+    /// Process the previous value and write the result into the provided [`RenderResult`](./struct.RenderResult.html)
+    fn render_help(p: Self::Entry, r: &mut RenderResult);
+}