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Add with_func0 and with_func1

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This commit is contained in:
Sergey Pepyakin
2017-12-16 18:19:35 +03:00
parent 6ca98c1fa8
commit 8b58e9f814
1 changed files with 39 additions and 15 deletions
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54
src/interpreter/host.rs
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@@ -24,21 +24,45 @@ impl<St> HostModuleBuilder<St> {
}
}
// pub fn insert_func0<
// Cl: Fn(&mut St) -> Result<Option<Ret>, Error> + AnyFunc<St> + 'static,
// Ret: AsReturnVal + 'static,
// F: Into<Cl>,
// N: Into<String>,
// >(
// &mut self,
// name: N,
// f: Box<F>,
// ) {
// let func_type = FunctionType::new(vec![], Ret::value_type());
// let host_func = Rc::new(f) as Rc<AnyFunc<St>>;
// let func = FuncInstance::alloc_host(Rc::new(func_type), host_func);
// self.insert_func(name, func);
// }
pub fn with_func0<
Cl: Fn(&mut St) -> Result<Option<Ret>, Error> + 'static,
Ret: AsReturnVal + 'static,
N: Into<String>,
>(
&mut self,
name: N,
f: Cl,
) {
let func_type = FunctionType::new(vec![], Ret::value_type());
let host_func = Rc::new(move |state: &mut St, args: &[RuntimeValue]| -> Result<Option<RuntimeValue>, Error> {
let result = f(state);
result.map(|r| r.and_then(|r| r.as_return_val()))
});
let func = FuncInstance::alloc_host(Rc::new(func_type), host_func);
self.insert_func(name, func);
}
pub fn with_func1<
Cl: Fn(&mut St, P1) -> Result<Option<Ret>, Error> + 'static,
Ret: AsReturnVal + 'static,
P1: FromArg + 'static,
N: Into<String>,
>(
&mut self,
name: N,
f: Cl,
) {
let func_type = FunctionType::new(vec![P1::value_type()], Ret::value_type());
let host_func = Rc::new(move |state: &mut St, args: &[RuntimeValue]| -> Result<Option<RuntimeValue>, Error> {
let arg0 = P1::from_arg(&args[0]);
let result = f(state, arg0);
result.map(|r| r.and_then(|r| r.as_return_val()))
});
let func = FuncInstance::alloc_host(Rc::new(func_type), host_func);
self.insert_func(name, func);
}
pub fn with_func2<
Cl: Fn(&mut St, P1, P2) -> Result<Option<Ret>, Error> + 'static,