34 lines
636 B
Rust
34 lines
636 B
Rust
use crate::namespace::Namespace;
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use crate::types::core::{ExprResult, Expression};
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#[derive(Debug, Eq, PartialEq, Clone)]
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pub struct List<T>
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where
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for<'a> T: Expression<'a>,
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{
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first: Box<T>,
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rest: Box<T>,
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}
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impl<T> List<T>
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where
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for<'a> T: Expression<'a>,
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{
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pub fn new<S>(first: Box<S>, rest: Box<S>) -> List<S>
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where
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for<'a> S: Expression<'a>,
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{
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List { first, rest }
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}
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}
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impl<'a, T> Expression<'a> for List<T>
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where
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for<'b> T: Expression<'b>,
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{
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fn eval() {}
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fn code_gen(&self, ns: &Namespace) -> ExprResult<'a> {
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Err("Not implemented on list".to_string())
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}
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}
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