add lang & time exts

api/system/README.md

@@ -6,16 +6,15 @@ High-level system API built on-top of [playdate-sys][].
 ## Usage
 
 ```rust
-use playdate_system::System;
-use playdate_sys::ffi::PDLanguage;
+use playdate_system::*;
 use playdate_sys::println;
 
 let system = System::new();
 
 match system.language() {
-	PDLanguage::kPDLanguageEnglish => println!("Hello"),
-	PDLanguage::kPDLanguageJapanese => println!("こんにちは"),
-	PDLanguage::kPDLanguageUnknown => println!("Привет"),
+	PDLanguage::English => println!("Hello"),
+	PDLanguage::Japanese => println!("こんにちは"),
+	PDLanguage::Unknown => println!("Привет"),
 }
 system.draw_fps(20, 20);
 ```

api/system/src/lang.rs

@@ -0,0 +1,11 @@
+pub use sys::ffi::PDLanguage;
+
+pub trait PDLanguageExt {
+	#![allow(non_upper_case_globals)]
+	const English: PDLanguage = PDLanguage::kPDLanguageEnglish;
+	const Japanese: PDLanguage = PDLanguage::kPDLanguageJapanese;
+	const Unknown: PDLanguage = PDLanguage::kPDLanguageUnknown;
+}
+
+
+impl PDLanguageExt for PDLanguage {}

api/system/src/lib.rs

@@ -10,11 +10,11 @@ use core::marker::PhantomData;
 use core::pin::Pin;
 use core::time::Duration;
 
-use sys::ffi::PDDateTime;
-use sys::ffi::PDLanguage;
-
-
 pub mod time;
+pub mod lang;
+
+pub use time::*;
+pub use lang::*;
 
 
 #[derive(Debug, Clone, Copy)]

api/system/src/time.rs

@@ -1,4 +1,4 @@
-use sys::ffi::PDDateTime;
+pub use sys::ffi::PDDateTime;
 
 use crate::api::Api;