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commit
91dc77cfea
16 changed files with 931 additions and 823 deletions
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@ -3,17 +3,178 @@
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#![feature(impl_trait_in_assoc_type)]
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pub(crate) use tengri_core::*;
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pub(crate) use std::marker::PhantomData;
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#[cfg(feature = "dsl")]
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pub(crate) use ::tengri_dsl::*;
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mod space; pub use self::space::*;
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mod ops; pub use self::ops::*;
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#[cfg(feature = "dsl")] mod ops_dsl;
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mod space; pub use self::space::*;
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mod ops; pub use self::ops::*;
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mod output; pub use self::output::*;
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#[cfg(test)] mod test;
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#[cfg(test)] pub use proptest_derive::Arbitrary;
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/// Enabling the `dsl` feature implements [FromDsl] for
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/// the layout elements that are provided by this crate.
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#[cfg(feature = "dsl")] mod ops_dsl {
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use crate::*;
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use ::tengri_dsl::*;
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/// The syntagm `(when :condition :content)` corresponds to a [When] layout element.
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impl<S, A> FromDsl<S> for When<A> where S: Eval<Ast, bool> + Eval<Ast, A> {
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fn try_provide (state: &S, source: DslValue<impl DslStr, impl DslExp>) -> Perhaps<Self> {
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source.exp_match("when", |_, tail|Ok(Some(Self(
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tail.eval(0, ||"no condition")?,
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tail.eval(1, ||"no content")?,
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))))
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}
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}
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/// The syntagm `(either :condition :content1 :content2)` corresponds to an [Either] layout element.
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impl<S, A, B> FromDsl<S> for Either<A, B> where S: Eval<Ast, bool> + Eval<Ast, A> + Eval<Ast, B> {
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fn try_provide (state: &S, source: DslValue<impl DslStr, impl DslExp>) -> Perhaps<Self> {
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source.exp_match("either", |_, tail|Ok(Some(Self(
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tail.eval(0, ||"no condition")?,
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tail.eval(1, ||"no content 1")?,
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tail.eval(2, ||"no content 2")?,
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))))
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}
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}
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/// The syntagm `(align/* :content)` corresponds to an [Align] layout element,
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/// where `*` specifies the direction of the alignment.
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impl<S, A> FromDsl<S> for Align<A> where S: Eval<Option<Ast>, A> {
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fn try_provide (state: &S, source: DslValue<impl DslStr, impl DslExp>) -> Perhaps<Self> {
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source.exp_match("align/", |head, tail|Ok(Some(match head {
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"c" => Self::c(tail.eval(0, ||"no content")?),
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"x" => Self::x(tail.eval(0, ||"no content")?),
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"y" => Self::y(tail.eval(0, ||"no content")?),
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"n" => Self::n(tail.eval(0, ||"no content")?),
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"s" => Self::s(tail.eval(0, ||"no content")?),
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"e" => Self::e(tail.eval(0, ||"no content")?),
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"w" => Self::w(tail.eval(0, ||"no content")?),
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"nw" => Self::nw(tail.eval(0, ||"no content")?),
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"ne" => Self::ne(tail.eval(0, ||"no content")?),
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"sw" => Self::sw(tail.eval(0, ||"no content")?),
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"se" => Self::se(tail.eval(0, ||"no content")?),
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_ => return Err("invalid align variant".into())
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})))
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}
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}
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/// The syntagm `(bsp/* :content1 :content2)` corresponds to a [Bsp] layout element,
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/// where `*` specifies the direction of the split.
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impl<S, A, B> FromDsl<S> for Bsp<A, B> where S: Eval<Option<Ast>, A> + Eval<Option<Ast>, B> {
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fn try_provide (state: &S, source: DslValue<impl DslStr, impl DslExp>) -> Perhaps<Self> {
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source.exp_match("bsp/", |head, tail|Ok(Some(match head {
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"n" => Self::n(tail.eval(0, ||"no content 1"), tail.eval(1, ||"no content 2")),
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"s" => Self::s(tail.eval(0, ||"no content 1"), tail.eval(1, ||"no content 2")),
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"e" => Self::e(tail.eval(0, ||"no content 1"), tail.eval(1, ||"no content 2")),
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"w" => Self::w(tail.eval(0, ||"no content 1"), tail.eval(1, ||"no content 2")),
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"a" => Self::a(tail.eval(0, ||"no content 1"), tail.eval(1, ||"no content 2")),
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"b" => Self::b(tail.eval(0, ||"no content 1"), tail.eval(1, ||"no content 2")),
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_ => return Ok(None),
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})))
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}
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}
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//#[cfg(feature = "dsl")] take!($Enum<A>, A|state, words|Ok(
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//if let Some(Token { value: Key(k), .. }) = words.peek() {
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//let mut base = words.clone();
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//let content = state.give_or_fail(words, ||format!("{k}: no content"))?;
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//return Ok(Some(match words.next() {
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//Some(Token{value: Key($x),..}) => Self::x(content),
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//Some(Token{value: Key($y),..}) => Self::y(content),
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//Some(Token{value: Key($xy),..}) => Self::xy(content),
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//_ => unreachable!()
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//}))
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//} else {
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//None
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//}));
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//#[cfg(feature = "dsl")] take!($Enum<U, A>, U, A|state, words|Ok(
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//if let Some(Token { value: Key($x|$y|$xy), .. }) = words.peek() {
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//let mut base = words.clone();
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//Some(match words.next() {
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//Some(Token { value: Key($x), .. }) => Self::x(
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//state.give_or_fail(words, ||"x: no unit")?,
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//state.give_or_fail(words, ||"x: no content")?,
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//),
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//Some(Token { value: Key($y), .. }) => Self::y(
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//state.give_or_fail(words, ||"y: no unit")?,
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//state.give_or_fail(words, ||"y: no content")?,
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//),
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//Some(Token { value: Key($x), .. }) => Self::xy(
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//state.give_or_fail(words, ||"xy: no unit x")?,
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//state.give_or_fail(words, ||"xy: no unit y")?,
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//state.give_or_fail(words, ||"xy: no content")?
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//),
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//_ => unreachable!(),
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//})
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//} else {
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//None
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//}));
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//if let Exp(_, exp) = source.value() {
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//let mut rest = exp.clone();
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//return Ok(Some(match rest.next().as_ref().and_then(|x|x.key()) {
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//Some("bsp/n") => Self::n(
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//state.eval(rest.next(), ||"bsp/n: no content 1")?,
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//state.eval(rest.next(), ||"bsp/n: no content 2")?,
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//),
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//Some("bsp/s") => Self::s(
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//state.eval(rest.next(), ||"bsp/s: no content 1")?,
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//state.eval(rest.next(), ||"bsp/s: no content 2")?,
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//),
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//Some("bsp/e") => Self::e(
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//state.eval(rest.next(), ||"bsp/e: no content 1")?,
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//state.eval(rest.next(), ||"bsp/e: no content 2")?,
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//),
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//Some("bsp/w") => Self::w(
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//state.eval(rest.next(), ||"bsp/w: no content 1")?,
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//state.eval(rest.next(), ||"bsp/w: no content 2")?,
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//),
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//Some("bsp/a") => Self::a(
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//state.eval(rest.next(), ||"bsp/a: no content 1")?,
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//state.eval(rest.next(), ||"bsp/a: no content 2")?,
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//),
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//Some("bsp/b") => Self::b(
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//state.eval(rest.next(), ||"bsp/b: no content 1")?,
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//state.eval(rest.next(), ||"bsp/b: no content 2")?,
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//),
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//_ => return Ok(None),
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//}))
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//}
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//Ok(None)
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//if let Exp(_, source) = source.value() {
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//let mut rest = source.clone();
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//return Ok(Some(match rest.next().as_ref().and_then(|x|x.key()) {
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//Some("align/c") => Self::c(state.eval(rest.next(), ||"align/c: no content")?),
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//Some("align/x") => Self::x(state.eval(rest.next(), ||"align/x: no content")?),
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//Some("align/y") => Self::y(state.eval(rest.next(), ||"align/y: no content")?),
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//Some("align/n") => Self::n(state.eval(rest.next(), ||"align/n: no content")?),
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//Some("align/s") => Self::s(state.eval(rest.next(), ||"align/s: no content")?),
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//Some("align/e") => Self::e(state.eval(rest.next(), ||"align/e: no content")?),
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//Some("align/w") => Self::w(state.eval(rest.next(), ||"align/w: no content")?),
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//Some("align/nw") => Self::nw(state.eval(rest.next(), ||"align/nw: no content")?),
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//Some("align/ne") => Self::ne(state.eval(rest.next(), ||"align/ne: no content")?),
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//Some("align/sw") => Self::sw(state.eval(rest.next(), ||"align/sw: no content")?),
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//Some("align/se") => Self::se(state.eval(rest.next(), ||"align/se: no content")?),
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//_ => return Ok(None),
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//}))
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//}
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//Ok(None)
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//Ok(match source.exp_head().and_then(|e|e.key()) {
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//Some("either") => Some(Self(
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//source.exp_tail().and_then(|t|t.get(0)).map(|x|state.eval(x, ||"when: no condition"))?,
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//source.exp_tail().and_then(|t|t.get(1)).map(|x|state.eval(x, ||"when: no content 1"))?,
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//source.exp_tail().and_then(|t|t.get(2)).map(|x|state.eval(x, ||"when: no content 2"))?,
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//)),
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//_ => None
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//})
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//if let Exp(_, mut exp) = source.value()
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//&& let Some(Ast(Key(id))) = exp.peek() && *id == *"either" {
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//let _ = exp.next();
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//return Ok(Some(Self(
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//state.eval(exp.next().unwrap(), ||"either: no condition")?,
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//state.eval(exp.next().unwrap(), ||"either: no content 1")?,
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//state.eval(exp.next().unwrap(), ||"either: no content 2")?,
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//)))
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//}
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//Ok(None)
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//Ok(match source.exp_head().and_then(|e|e.key()) {
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//Some("when") => Some(Self(
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//source.exp_tail().and_then(|t|t.get(0)).map(|x|state.eval(x, ||"when: no condition"))?,
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//source.exp_tail().and_then(|t|t.get(1)).map(|x|state.eval(x, ||"when: no content"))?,
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//)),
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//_ => None
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//})
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}
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