Add serde example

examples/serde.rs

@@ -0,0 +1,74 @@
+#[cfg(not(feature = "serde"))]
+fn main() {
+    println!("This example requires the feature `serde`. Use `cargo run --features serde --example serde`.");
+}
+
+#[cfg(feature = "serde")]
+fn main() {
+    example::ser();
+    println!();
+    example::de();
+}
+
+#[cfg(feature = "serde")]
+mod example {
+    use rhai::{de::from_dynamic, ser::to_dynamic};
+    use rhai::{Dynamic, Engine, Map};
+
+    #[derive(Debug, serde::Serialize, serde::Deserialize)]
+    struct Point {
+        x: f64,
+        y: f64,
+    }
+
+    #[derive(Debug, serde::Serialize, serde::Deserialize)]
+    struct MyStruct {
+        a: i64,
+        b: Vec<String>,
+        c: bool,
+        d: Point,
+    }
+
+    pub fn ser() {
+        let x = MyStruct {
+            a: 42,
+            b: vec!["hello".into(), "world".into()],
+            c: true,
+            d: Point {
+                x: 123.456,
+                y: 999.0,
+            },
+        };
+
+        println!("Source struct: {:#?}", x);
+
+        // Convert the 'MyStruct' into a 'Dynamic'
+        let map: Dynamic = to_dynamic(x).unwrap();
+
+        assert!(map.is::<Map>());
+        println!("Serialized to Dynamic: {:#?}", map);
+    }
+
+    pub fn de() {
+        let engine = Engine::new();
+        let result: Dynamic = engine
+            .eval(
+                r#"
+                    #{
+                        a: 42,
+                        b: [ "hello", "world" ],
+                        c: true,
+                        d: #{ x: 123.456, y: 999.0 }
+                    }
+                "#,
+            )
+            .unwrap();
+
+        println!("Source Dynamic: {:#?}", result);
+
+        // Convert the 'Dynamic' object map into 'MyStruct'
+        let x: MyStruct = from_dynamic(&result).unwrap();
+
+        println!("Deserialized to struct: {:#?}", x);
+    }
+}