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implement TokensIterator::peek

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🪞👃🪞 2025-01-18 03:47:18 +01:00
parent a949117017
commit 92fcb0af8f
7 changed files with 196 additions and 198 deletions
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29
output/src/op_bsp.rs
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@ -1,5 +1,4 @@
use crate::*;
use RefAtom::*;
pub use self::Direction::*;
/// A cardinal direction.
#[derive(Copy, Clone, PartialEq)]
@ -37,28 +36,28 @@ try_from_atoms!(<'a, E>: Bsp<RenderBox<'a, E>, RenderBox<'a, E>>: |state, atoms|
if head.kind() != TokenKind::Key { return None }
match head.text() {
"bsp/n" => return Some(Self::n(
state.get_content(atoms.next()?).expect("no south"),
state.get_content(atoms.next()?).expect("no north")
state.get_content(&atoms.next()?).expect("no south"),
state.get_content(&atoms.next()?).expect("no north")
)),
"bsp/s" => return Some(Self::s(
state.get_content(atoms.next()?).expect("no north"),
state.get_content(atoms.next()?).expect("no south")
state.get_content(&atoms.next()?).expect("no north"),
state.get_content(&atoms.next()?).expect("no south")
)),
"bsp/e" => return Some(Self::e(
state.get_content(atoms.next()?).expect("no west"),
state.get_content(atoms.next()?).expect("no east")
state.get_content(&atoms.next()?).expect("no west"),
state.get_content(&atoms.next()?).expect("no east")
)),
"bsp/w" => return Some(Self::w(
state.get_content(atoms.next()?).expect("no east"),
state.get_content(atoms.next()?).expect("no west")
state.get_content(&atoms.next()?).expect("no east"),
state.get_content(&atoms.next()?).expect("no west")
)),
"bsp/a" => return Some(Self::a(
state.get_content(atoms.next()?).expect("no above"),
state.get_content(atoms.next()?).expect("no below")
state.get_content(&atoms.next()?).expect("no above"),
state.get_content(&atoms.next()?).expect("no below")
)),
"bsp/b" => return Some(Self::b(
state.get_content(atoms.next()?).expect("no above"),
state.get_content(atoms.next()?).expect("no below")
state.get_content(&atoms.next()?).expect("no above"),
state.get_content(&atoms.next()?).expect("no below")
)),
_ => {}
}
@ -124,22 +123,18 @@ impl<E: Output, A: Content<E>, B: Content<E>> BspAreas<E, A, B> for Bsp<A, B> {
fn direction (&self) -> Direction { self.0 }
fn contents (&self) -> (&A, &B) { (&self.1, &self.2) }
}
/// Renders multiple things on top of each other,
#[macro_export] macro_rules! lay {
($($expr:expr),* $(,)?) => {{ let bsp = (); $(let bsp = Bsp::b(bsp, $expr);)*; bsp }}
}
/// Stack southward.
#[macro_export] macro_rules! col {
($($expr:expr),* $(,)?) => {{ let bsp = (); $(let bsp = Bsp::s(bsp, $expr);)*; bsp }};
}
/// Stack northward.
#[macro_export] macro_rules! col_up {
($($expr:expr),* $(,)?) => {{ let bsp = (); $(let bsp = Bsp::n(bsp, $expr);)*; bsp }}
}
/// Stack eastward.
#[macro_export] macro_rules! row {
($($expr:expr),* $(,)?) => {{ let bsp = (); $(let bsp = Bsp::e(bsp, $expr);)*; bsp }};