feat(command): implement --help output

1 files changed, 15 insertions, 1 deletions

diff --git a/crates/shirabe-external-packages/src/symfony/console/descriptor/descriptor_interface.rs b/crates/shirabe-external-packages/src/symfony/console/descriptor/descriptor_interface.rs
index be39ec3..be0e9ff 100644
--- a/crates/shirabe-external-packages/src/symfony/console/descriptor/descriptor_interface.rs
+++ b/crates/shirabe-external-packages/src/symfony/console/descriptor/descriptor_interface.rs
@@ -1,15 +1,29 @@
 //! ref: composer/vendor/symfony/console/Descriptor/DescriptorInterface.php
 
+use crate::symfony::console::application::Application;
+use crate::symfony::console::command::command::Command;
+use crate::symfony::console::input::input_argument::InputArgument;
+use crate::symfony::console::input::input_definition::InputDefinition;
+use crate::symfony::console::input::input_option::InputOption;
 use crate::symfony::console::output::output_interface::OutputInterface;
 use indexmap::IndexMap;
 use shirabe_php_shim::PhpMixed;
 
+/// The set of objects the descriptors know how to describe.
+pub enum DescribableObject {
+    InputArgument(InputArgument),
+    InputOption(InputOption),
+    InputDefinition(InputDefinition),
+    Command(std::rc::Rc<std::cell::RefCell<dyn Command>>),
+    Application(std::rc::Rc<std::cell::RefCell<dyn Application>>),
+}
+
 /// Descriptor interface.
 pub trait DescriptorInterface {
     fn describe(
         &mut self,
         output: std::rc::Rc<std::cell::RefCell<dyn OutputInterface>>,
-        object: PhpMixed,
+        object: DescribableObject,
         options: IndexMap<String, PhpMixed>,
     ) -> anyhow::Result<()>;
 }