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FromDsl -> Namespace

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🪞👃🪞 2025-05-21 00:06:36 +03:00
parent 455d6d00d5
commit f714302f21
8 changed files with 33 additions and 32 deletions
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14
dsl/src/dsl_provide.rs
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@ -1,6 +1,6 @@
use crate::*;
pub trait Dsl<Other>: Sized {
pub trait Dsl<Other> {
fn take <'state, 'source: 'state> (
&'state self,
token: &mut TokenIter<'source>
@ -18,7 +18,7 @@ pub trait Dsl<Other>: Sized {
}
}
}
pub trait FromDsl<'source, State>: Sized {
pub trait Namespace<'source, State>: Sized {
fn take_from <'state> (state: &'state State, token: &mut TokenIter<'source>)
-> Perhaps<Self>;
fn take_from_or_fail <'state> (
@ -26,14 +26,14 @@ pub trait FromDsl<'source, State>: Sized {
token: &mut TokenIter<'source>,
error: impl Into<Box<dyn std::error::Error>>
) -> Usually<Self> {
if let Some(value) = FromDsl::<State>::take_from(state, token)? {
if let Some(value) = Namespace::<State>::take_from(state, token)? {
Ok(value)
} else {
Result::Err(error.into())
}
}
}
//impl<State: Dsl<T>, T> FromDsl<State> for T {
//impl<State: Dsl<T>, T> Namespace<State> for T {
//fn take_from <'state, 'source: 'state> (state: &'state State, token: &mut TokenIter<'source>)
//-> Perhaps<Self>
//{
@ -45,7 +45,7 @@ pub trait FromDsl<'source, State>: Sized {
/// specifying two types and providing an expression.
#[macro_export] macro_rules! from_dsl {
(@a: $T:ty: |$state:ident, $words:ident|$expr:expr) => {
impl<'source, State: Dsl<A>, A> FromDsl<'source, State> for $T {
impl<'source, State: Dsl<A>, A> Namespace<'source, State> for $T {
fn take_from <'state> (
$state: &'state State,
$words: &mut TokenIter<'source>,
@ -55,7 +55,7 @@ pub trait FromDsl<'source, State>: Sized {
}
};
(@ab: $T:ty: |$state:ident, $words:ident|$expr:expr) => {
impl<'source, State: Dsl<A> + Dsl<B>, A, B> FromDsl<'source, State> for $T {
impl<'source, State: Dsl<A> + Dsl<B>, A, B> Namespace<'source, State> for $T {
fn take_from <'state> (
$state: &'state State,
$words: &mut TokenIter<'source>,
@ -65,7 +65,7 @@ pub trait FromDsl<'source, State>: Sized {
}
};
($T:ty: |$state:ident:$S:ty, $words:ident|$expr:expr) => {
impl<'source> FromDsl<'source, $S> for $T {
impl<'source> Namespace<'source, $S> for $T {
fn take_from <'state> (
$state: &'state $S,
$words: &mut TokenIter<'source>,