implement builder pattern for CliCommand

src/bin/pbs.rs

@@ -9,23 +9,19 @@ fn datastore_commands() -> CommandLineInterface {
 
     let mut cmd_def = HashMap::<String, CommandLineInterface>::new();
 
-    cmd_def.insert("list".to_owned(), CliCommand {
-        info: api3::config::datastore::get(),
-        arg_param: vec![],
-        fixed_param: vec![],
-    }.into());
+    use apitest::api3::config::datastore;
 
-    cmd_def.insert("create".to_owned(), CliCommand {
-        info: api3::config::datastore::post(),
-        arg_param: vec!["name", "path"],
-        fixed_param: vec![],
-    }.into());
+    cmd_def.insert("list".to_owned(), CliCommand::new(datastore::get()).into());
 
-    cmd_def.insert("remove".to_owned(), CliCommand {
-        info: api3::config::datastore::delete(),
-        arg_param: vec!["name"],
-        fixed_param: vec![],
-    }.into());
+    cmd_def.insert("create".to_owned(),
+                   CliCommand::new(datastore::post())
+                   .arg_param(vec!["name", "path"])
+                   .into());
+
+    cmd_def.insert("remove".to_owned(),
+                   CliCommand::new(api3::config::datastore::delete())
+                   .arg_param(vec!["name"])
+                   .into());
 
     cmd_def.into()
 }

src/cli/command.rs

@@ -99,6 +99,23 @@ pub struct CliCommand {
     pub fixed_param: Vec<&'static str>,
 }
 
+impl CliCommand {
+
+    pub fn new(info: ApiMethod) -> Self {
+        Self { info, arg_param: vec![], fixed_param: vec![] }
+    }
+
+    pub fn arg_param(mut self, names: Vec<&'static str>) -> Self {
+        self.arg_param = names;
+        self
+    }
+
+    pub fn fixed_param(mut self, args: Vec<&'static str>) -> Self {
+        self.fixed_param = args;
+        self
+    }
+}
+
 pub enum CommandLineInterface {
     Simple(CliCommand),
     Nested(HashMap<String, CommandLineInterface>),