add support for visibility in arg! macro

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "badargs"
-version = "0.1.2"
+version = "0.2.0"
 edition = "2018"
 license = "MIT"
 description = "Type safe zero-dependency argument parser"

src/lib.rs

@@ -5,29 +5,34 @@
 //!
 //! Declare your arguments with structs. You probably want to use the macro for that
 //! ```
-//! # use badargs::arg;
+//! use badargs::arg;
+//!
 //! arg!(Force: "force", 'f' -> bool);
 //! arg!(OutFile: "output", 'o' -> String);
 //! ```
-//! Then you call the [`badargs`] function with all of your declared arguments. You probably
-//! want to use a macro for that too.
 //!
-//! You can also use the [`badargs!`] macro if you have many arguments and don't want to nest
-//! the tuples manually
+//! The recommended way to use `badargs` is by invoking the macro [`badargs!`]
 //! ```
-//! # use badargs::arg;
-//! # arg!(Force: "force", 'f' -> bool);
-//! # arg!(OutFile: "output", 'o' -> String);
+//! use badargs::arg;
+//!
+//! arg!(Force: "force", 'f' -> bool);
+//! arg!(OutFile: "output", 'o' -> String);
+//!
 //! let args = badargs::badargs!(Force, OutFile);
 //! ```
-//! You can then get values using your declared arguments
+//!
+//! You can also invoke the [`badargs()`] function directly
+//!
+//! Getting the values is done using the [`BadArgs::get`] function
 //! ```
-//! # use badargs::arg;
-//! # arg!(Force: "force", 'f' -> bool);
-//! # arg!(OutFile: "output", 'o' -> String);
-//! # let args = badargs::badargs!(Force, OutFile);
+//! use badargs::arg;
+//! arg!(Force: "force", 'f' -> bool);
+//! arg!(OutFile: "output", 'o' -> String);
+//!
+//! let args = badargs::badargs!(Force, OutFile);
+//!
 //! let force: Option<&bool> = args.get::<Force>();
-//! let out_file: Option<&String> = args.get::<OutFile>();
+//! let out_file = args.get::<OutFile>();
 //! ```
 
 mod macros;
@@ -138,7 +143,9 @@ mod error {
     /// Invalid schema
     #[derive(Debug, Clone, Eq, PartialEq)]
     pub enum SchemaError {
+        /// The argument name was already provided for a different argument
         NameAlreadyExists(String),
+        /// Currently not used
         InvalidSchema(String),
     }
 

src/macros.rs

@@ -1,12 +1,25 @@
 ///
 /// Declare your arguments using this macro.
+///
+/// Possible patterns:
 /// ```
-/// # use badargs::arg;
+/// use badargs::arg;
+///
+/// arg!(LongOrShort: "long-or-short", 's' -> bool);
+/// arg!(OnlyLong: "only-long" -> bool);
+/// arg!(pub OtherModule: "other-module" -> bool);
+/// ```
+///
+///
+/// ```
+/// use badargs::arg;
+///
 /// arg!(Force: "force", 'f' -> bool);
 /// ```
 /// is a shorthand for
 /// ```
-/// # use badargs::{arg, CliArg};
+/// use badargs::{arg, CliArg};
+///
 /// struct Force;
 ///
 /// impl CliArg for Force {
@@ -23,15 +36,15 @@
 /// ```
 #[macro_export]
 macro_rules! arg {
-    ($name:ident: $long:literal, $short:literal -> $result:ty) => {
-        arg!(@$name: ($long, ::std::option::Option::Some($short)) -> $result);
+    ($vis:vis $name:ident: $long:literal, $short:literal -> $result:ty) => {
+        arg!(@$vis $name: ($long, ::std::option::Option::Some($short)) -> $result);
     };
-    ($name:ident: $long:literal -> $result:ty) => {
-        arg!(@$name: ($long, ::std::option::Option::None) -> $result);
+    ($vis:vis $name:ident: $long:literal -> $result:ty) => {
+        arg!(@$vis $name: ($long, ::std::option::Option::None) -> $result);
     };
-    (@$name:ident: ($long:literal, $short:expr) -> $result:ty) => {
+    (@$vis:vis $name:ident: ($long:literal, $short:expr) -> $result:ty) => {
         #[derive(Default)]
-        struct $name;
+        $vis struct $name;
 
         impl $crate::CliArg for $name {
             type Content = $result;
@@ -48,7 +61,8 @@ macro_rules! arg {
 }
 
 ///
-/// A shorthand for calling the [`badargs::badargs`] main function
+/// A shorthand for calling the [`badargs`](crate::badargs()) main function
+///
 /// This macro lets you specify your arguments in a flat list, and then converts them into
 /// nested tuples for you, since that's what's internally used.
 /// ```