forked from AbleScript/ablescript
implemented subtraction for built-in functios
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0ac507e3b3
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@ -635,7 +635,27 @@ impl ops::Sub for Value {
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)
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.into_functio(),
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},
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Functio::Builtin(_) => todo!(),
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Functio::Builtin(b) => {
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let arity = b.arity;
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let resulting_arity = arity.saturating_sub(rhs.into_i32() as usize);
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Functio::Builtin(BuiltinFunctio::new(
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move |args| {
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b.call(
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&args
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.iter()
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.cloned()
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.take(resulting_arity)
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.chain(std::iter::repeat_with(|| {
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Rc::new(RefCell::new(Value::Nul))
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}))
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.take(arity)
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.collect::<Vec<_>>(),
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)
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},
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resulting_arity,
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))
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}
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Functio::Chain { functios, .. } => {
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let rhs = rhs.into_functio();
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let (a, b) = *functios;
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