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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.use serde::Deserialize;
#[derive(Debug, Deserialize)]struct MathOp {  pub a: u64,  pub b: u64,  pub operator: Option<String>,}
fn main() {  let platform = v8::new_default_platform(0, false).make_shared();  v8::V8::initialize_platform(platform);  v8::V8::initialize();
  {    let isolate = &mut v8::Isolate::new(v8::CreateParams::default());    let handle_scope = &mut v8::HandleScope::new(isolate);    let context = v8::Context::new(handle_scope);    let scope = &mut v8::ContextScope::new(handle_scope, context);
    fn exec<'s>(      scope: &mut v8::HandleScope<'s>,      src: &str,    ) -> v8::Local<'s, v8::Value> {      let code = v8::String::new(scope, src).unwrap();      let script = v8::Script::compile(scope, code, None).unwrap();      script.run(scope).unwrap()    }
    let v = exec(scope, "32");    let x32: u64 = serde_v8::from_v8(scope, v).unwrap();    println!("x32 = {}", x32);
    let v = exec(scope, "({a: 1, b: 3, c: 'ignored'})");    let mop: MathOp = serde_v8::from_v8(scope, v).unwrap();    println!(      "mop = {{ a: {}, b: {}, operator: {:?} }}",      mop.a, mop.b, mop.operator    );
    let v = exec(scope, "[1,2,3,4,5]");    let arr: Vec<u64> = serde_v8::from_v8(scope, v).unwrap();    println!("arr = {:?}", arr);
    let v = exec(scope, "['hello', 'world']");    let hi: Vec<String> = serde_v8::from_v8(scope, v).unwrap();    println!("hi = {:?}", hi);
    let v: v8::Local<v8::Value> = v8::Number::new(scope, 12345.0).into();    let x: f64 = serde_v8::from_v8(scope, v).unwrap();    println!("x = {}", x);  }
  // SAFETY: all isolates have been destroyed, so we can now safely let V8 clean  // up its resources.  unsafe {    v8::V8::dispose();  }  v8::V8::dispose_platform();}