iterator being const when not needed

This commit is contained in:
🪞👃🪞 2025-01-18 23:58:18 +01:00
parent 67148a4aa4
commit a595e2e895
4 changed files with 36 additions and 46 deletions

View file

@ -1,7 +1,7 @@
use crate::*;
pub trait TryFromAtom<'a, T>: Sized {
fn try_from_atom (state: &'a T, value: Value<'a>) -> Option<Self> {
if let Value::Exp(0, iter) = value { return Self::try_from_expr(state, iter) }
if let Exp(0, iter) = value { return Self::try_from_expr(state, iter) }
None
}
fn try_from_expr (_state: &'a T, _iter: TokenIter<'a>) -> Option<Self> {
@ -43,10 +43,8 @@ impl<T: Context<U>, U> Context<U> for Option<T> {
impl Context<$type> for $State {
#[allow(unreachable_code)]
fn get (&$self, atom: &Value) -> Option<$type> {
Some(match atom {
$(Value::Sym($pat) => $expr,)*
_ => return None
})
use Value::*;
Some(match atom { $(Sym($pat) => $expr,)* _ => return None })
}
}
};
@ -55,10 +53,8 @@ impl<T: Context<U>, U> Context<U> for Option<T> {
impl<$lt> Context<$lt, $type> for $State {
#[allow(unreachable_code)]
fn get (&$lt $self, atom: &Value) -> Option<$type> {
Some(match atom {
$(Value::Sym($pat) => $expr,)*
_ => return None
})
use Value::*;
Some(match atom { $(Sym($pat) => $expr,)* _ => return None })
}
}
};
@ -71,11 +67,8 @@ impl<T: Context<U>, U> Context<U> for Option<T> {
($type:ty:|$self:ident:<$T:ident:$Trait:path>|{ $($pat:pat => $expr:expr),* $(,)? }) => {
impl<$T: $Trait> Context<$type> for $T {
fn get (&$self, atom: &Value) -> Option<$type> {
Some(match atom {
$(Value::Sym($pat) => $expr,)*
Value::Num(n) => *n as $type,
_ => return None
})
use Value::*;
Some(match atom { $(Sym($pat) => $expr,)* Num(n) => *n as $type, _ => return None })
}
}
};
@ -83,11 +76,8 @@ impl<T: Context<U>, U> Context<U> for Option<T> {
($type:ty:|$self:ident:$State:ty|{ $($pat:pat => $expr:expr),* $(,)? }) => {
impl Context<$type> for $State {
fn get (&$self, atom: &Value) -> Option<$type> {
Some(match atom {
$(Value::Sym($pat) => $expr,)*
Value::Num(n) => *n as $type,
_ => return None
})
use Value::*;
Some(match atom { $(Sym($pat) => $expr,)* Num(n) => *n as $type, _ => return None })
}
}
};
@ -100,11 +90,12 @@ impl<T: Context<U>, U> Context<U> for Option<T> {
($type:ty:|$self:ident:<$T:ident:$Trait:path>|{ $($pat:pat => $expr:expr),* $(,)? }) => {
impl<$T: $Trait> Context<$type> for $T {
fn get (&$self, atom: &Value) -> Option<$type> {
use Value::*;
Some(match atom {
Value::Num(n) => match *n { 0 => false, _ => true },
Value::Sym(":false") | Value::Sym(":f") => false,
Value::Sym(":true") | Value::Sym(":t") => true,
$(Value::Sym($pat) => $expr,)*
Num(n) => match *n { 0 => false, _ => true },
Sym(":false") | Sym(":f") => false,
Sym(":true") | Sym(":t") => true,
$(Sym($pat) => $expr,)*
_ => return Context::get(self, atom)
})
}
@ -114,11 +105,12 @@ impl<T: Context<U>, U> Context<U> for Option<T> {
($type:ty:|$self:ident:$State:ty|{ $($pat:pat => $expr:expr),* $(,)? }) => {
impl Context<$type> for $State {
fn get (&$self, atom: &Value) -> Option<$type> {
use Value::*;
Some(match atom {
Value::Num(n) => match *n { 0 => false, _ => true },
Value::Sym(":false") | Value::Sym(":f") => false,
Value::Sym(":true") | Value::Sym(":t") => true,
$(Value::Sym($pat) => $expr,)*
Num(n) => match *n { 0 => false, _ => true },
Sym(":false") | Sym(":f") => false,
Sym(":true") | Sym(":t") => true,
$(Sym($pat) => $expr,)*
_ => return None
})
}