1 files changed, 93 insertions, 0 deletions
diff --git a/third_party/rust/winreg/examples/serialization.rs b/third_party/rust/winreg/examples/serialization.rs
new file mode 100644
index 0000000000..462813291a
--- /dev/null
+++ b/third_party/rust/winreg/examples/serialization.rs
@@ -0,0 +1,93 @@
+// Copyright 2015, Igor Shaula
+// Licensed under the MIT License <LICENSE or
+// http://opensource.org/licenses/MIT>. This file
+// may not be copied, modified, or distributed
+// except according to those terms.
+#[macro_use]
+extern crate serde_derive;
+extern crate winreg;
+use std::collections::HashMap;
+use std::error::Error;
+use winreg::enums::*;
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+struct Coords {
+    x: u32,
+    y: u32,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+struct Size {
+    w: u32,
+    h: u32,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+struct Rectangle {
+    coords: Coords,
+    size: Size,
+}
+
+#[derive(Debug, Serialize, Deserialize, PartialEq)]
+struct Test {
+    t_bool: bool,
+    t_u8: u8,
+    t_u16: u16,
+    t_u32: u32,
+    t_u64: u64,
+    t_usize: usize,
+    t_struct: Rectangle,
+    t_map: HashMap<String, u32>,
+    t_string: String,
+    #[serde(rename = "")] // empty name becomes the (Default) value in the registry
+    t_char: char,
+    t_i8: i8,
+    t_i16: i16,
+    t_i32: i32,
+    t_i64: i64,
+    t_isize: isize,
+    t_f64: f64,
+    t_f32: f32,
+}
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let hkcu = winreg::RegKey::predef(HKEY_CURRENT_USER);
+    let (key, _disp) = hkcu.create_subkey("Software\\RustEncode")?;
+
+    let mut map = HashMap::new();
+    map.insert("".to_owned(), 0); // empty name becomes the (Default) value in the registry
+    map.insert("v1".to_owned(), 1);
+    map.insert("v2".to_owned(), 2);
+    map.insert("v3".to_owned(), 3);
+
+    let v1 = Test {
+        t_bool: false,
+        t_u8: 127,
+        t_u16: 32768,
+        t_u32: 123_456_789,
+        t_u64: 123_456_789_101_112,
+        t_usize: 1_234_567_891,
+        t_struct: Rectangle {
+            coords: Coords { x: 55, y: 77 },
+            size: Size { w: 500, h: 300 },
+        },
+        t_map: map,
+        t_string: "test 123!".to_owned(),
+        t_char: 'a',
+        t_i8: -123,
+        t_i16: -2049,
+        t_i32: 20100,
+        t_i64: -12_345_678_910,
+        t_isize: -1_234_567_890,
+        t_f64: -0.01,
+        t_f32: 3.15,
+    };
+
+    key.encode(&v1)?;
+
+    let v2: Test = key.decode()?;
+    println!("Decoded {:?}", v2);
+
+    println!("Equal to encoded: {:?}", v1 == v2);
+    Ok(())
+}