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-rw-r--r--dhall/src/core/thunk.rs4
-rw-r--r--dhall/src/phase/parse.rs2
-rw-r--r--dhall/src/phase/typecheck.rs6
-rw-r--r--dhall_proc_macros/src/quote.rs10
-rw-r--r--dhall_syntax/src/core.rs40
-rw-r--r--dhall_syntax/src/visitor.rs84
6 files changed, 27 insertions, 119 deletions
diff --git a/dhall/src/core/thunk.rs b/dhall/src/core/thunk.rs
index 8775ce2..69c4347 100644
--- a/dhall/src/core/thunk.rs
+++ b/dhall/src/core/thunk.rs
@@ -126,7 +126,7 @@ impl Thunk {
}
pub(crate) fn from_normalized_expr(e: OutputSubExpr) -> Thunk {
- Thunk::new(NormalizationContext::new(), e.embed_absurd().note_absurd())
+ Thunk::new(NormalizationContext::new(), e.absurd())
}
// Normalizes contents to normal form; faster than `normalize_nf` if
@@ -253,7 +253,7 @@ impl TypeThunk {
TypeThunk::Type(t) => Ok(t.clone()),
TypeThunk::Thunk(th) => {
// TODO: rule out statically
- mktype(ctx, th.normalize_to_expr().embed_absurd().note_absurd())
+ mktype(ctx, th.normalize_to_expr().absurd())
}
}
}
diff --git a/dhall/src/phase/parse.rs b/dhall/src/phase/parse.rs
index 809faf4..6b426af 100644
--- a/dhall/src/phase/parse.rs
+++ b/dhall/src/phase/parse.rs
@@ -13,7 +13,7 @@ pub(crate) fn parse_file(f: &Path) -> Result<Parsed, Error> {
File::open(f)?.read_to_string(&mut buffer)?;
let expr = parse_expr(&*buffer)?;
let root = ImportRoot::LocalDir(f.parent().unwrap().to_owned());
- Ok(Parsed(expr.unnote().note_absurd(), root))
+ Ok(Parsed(expr, root))
}
pub(crate) fn parse_str(s: &str) -> Result<Parsed, Error> {
diff --git a/dhall/src/phase/typecheck.rs b/dhall/src/phase/typecheck.rs
index 3e6986f..32c1531 100644
--- a/dhall/src/phase/typecheck.rs
+++ b/dhall/src/phase/typecheck.rs
@@ -230,7 +230,7 @@ pub(crate) fn type_of_const(c: Const) -> Result<Type, TypeError> {
}
}
-fn type_of_builtin<E>(b: Builtin) -> Expr<X, E> {
+fn type_of_builtin(b: Builtin) -> Expr<X, X> {
use dhall_syntax::Builtin::*;
match b {
Bool | Natural | Integer | Double | Text => dhall::expr!(Type),
@@ -635,7 +635,7 @@ fn type_last_layer(
}
Const(c) => Ok(RetTyped(Typed::from_const(c))),
Builtin(b) => {
- Ok(RetType(mktype(ctx, rc(type_of_builtin(b)).note_absurd())?))
+ Ok(RetType(mktype(ctx, rc(type_of_builtin(b)).absurd())?))
}
BoolLit(_) => Ok(RetType(builtin_to_type(Bool)?)),
NaturalLit(_) => Ok(RetType(builtin_to_type(Natural)?)),
@@ -712,7 +712,7 @@ pub(crate) fn typecheck_with(
ty: &Type,
) -> Result<Typed, TypeError> {
let expr: SubExpr<_, _> = e.0;
- let ty: SubExpr<_, _> = ty.to_expr().embed_absurd().note_absurd();
+ let ty: SubExpr<_, _> = ty.to_expr().absurd();
type_of(expr.rewrap(ExprF::Annot(expr.clone(), ty)))
}
pub(crate) fn skip_typecheck(e: Resolved) -> Typed {
diff --git a/dhall_proc_macros/src/quote.rs b/dhall_proc_macros/src/quote.rs
index eaf4946..77ed5de 100644
--- a/dhall_proc_macros/src/quote.rs
+++ b/dhall_proc_macros/src/quote.rs
@@ -7,7 +7,7 @@ use std::collections::BTreeMap;
pub fn expr(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
let input_str = input.to_string();
- let expr: SubExpr<_, Import> = parse_expr(&input_str).unwrap().unnote();
+ let expr: SubExpr<_, Import> = parse_expr(&input_str).unwrap();
let no_import =
|_: &Import| -> X { panic!("Don't use import in dhall::expr!()") };
let expr = expr.map_embed(no_import);
@@ -17,7 +17,7 @@ pub fn expr(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
pub fn subexpr(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
let input_str = input.to_string();
- let expr: SubExpr<_, Import> = parse_expr(&input_str).unwrap().unnote();
+ let expr: SubExpr<_, Import> = parse_expr(&input_str).unwrap();
let no_import =
|_: &Import| -> X { panic!("Don't use import in dhall::subexpr!()") };
let expr = expr.map_embed(no_import);
@@ -94,8 +94,8 @@ where
// Returns an expression of type SubExpr<_, _>. Expects interpolated variables
// to be of type SubExpr<_, _>.
-fn quote_subexpr(
- expr: &SubExpr<X, X>,
+fn quote_subexpr<N>(
+ expr: &SubExpr<N, X>,
ctx: &Context<Label, ()>,
) -> TokenStream {
use dhall_syntax::ExprF::*;
@@ -131,7 +131,7 @@ fn quote_subexpr(
// Returns an expression of type Expr<_, _>. Expects interpolated variables
// to be of type SubExpr<_, _>.
-fn quote_expr(expr: &Expr<X, X>, ctx: &Context<Label, ()>) -> TokenStream {
+fn quote_expr<N>(expr: &Expr<N, X>, ctx: &Context<Label, ()>) -> TokenStream {
use dhall_syntax::ExprF::*;
match expr.map_ref_with_special_handling_of_binders(
|e| quote_subexpr(e, ctx),
diff --git a/dhall_syntax/src/core.rs b/dhall_syntax/src/core.rs
index 7cdda64..2b76b9a 100644
--- a/dhall_syntax/src/core.rs
+++ b/dhall_syntax/src/core.rs
@@ -343,15 +343,11 @@ impl<N, E> Expr<N, E> {
{
trivial_result(self.traverse_embed(|x| Ok(map_embed(x))))
}
+}
- pub fn squash_embed<E2>(
- &self,
- f: impl FnMut(&E) -> SubExpr<N, E2>,
- ) -> SubExpr<N, E2>
- where
- N: Clone,
- {
- trivial_result(self.visit(&mut visitor::SquashEmbedVisitor(f)))
+impl Expr<X, X> {
+ pub fn absurd<N, E>(&self) -> Expr<N, E> {
+ self.visit(&mut visitor::AbsurdVisitor)
}
}
@@ -361,12 +357,6 @@ impl<E: Clone> Expr<X, E> {
}
}
-impl<N: Clone> Expr<N, X> {
- pub fn embed_absurd<E>(&self) -> Expr<N, E> {
- self.visit(&mut visitor::EmbedAbsurdVisitor)
- }
-}
-
impl<N, E> SubExpr<N, E> {
pub fn as_ref(&self) -> &Expr<N, E> {
&self.0.as_ref().0
@@ -380,17 +370,6 @@ impl<N, E> SubExpr<N, E> {
SubExpr(Rc::new((x, None)))
}
- pub fn unnote(&self) -> SubExpr<X, E>
- where
- E: Clone,
- {
- SubExpr::from_expr_no_note(
- self.as_ref().visit(&mut visitor::UnNoteVisitor),
- )
- }
-}
-
-impl<N: Clone, E> SubExpr<N, E> {
pub fn rewrap<E2>(&self, x: Expr<N, E2>) -> SubExpr<N, E2>
where
N: Clone,
@@ -422,7 +401,10 @@ impl<N: Clone, E> SubExpr<N, E> {
&'a self,
map_expr: impl FnMut(&'a Self) -> Self,
map_under_binder: impl FnMut(&'a Label, &'a Self) -> Self,
- ) -> Self {
+ ) -> Self
+ where
+ N: Clone,
+ {
match self.as_ref() {
ExprF::Embed(_) => SubExpr::clone(self),
// This calls ExprF::map_ref
@@ -436,9 +418,9 @@ impl<N: Clone, E> SubExpr<N, E> {
}
}
-impl<N: Clone> SubExpr<N, X> {
- pub fn embed_absurd<T>(&self) -> SubExpr<N, T> {
- self.rewrap(self.as_ref().embed_absurd())
+impl SubExpr<X, X> {
+ pub fn absurd<N: Clone, T>(&self) -> SubExpr<N, T> {
+ SubExpr::from_expr_no_note(self.as_ref().absurd())
}
}
diff --git a/dhall_syntax/src/visitor.rs b/dhall_syntax/src/visitor.rs
index 7fdf217..20bfc72 100644
--- a/dhall_syntax/src/visitor.rs
+++ b/dhall_syntax/src/visitor.rs
@@ -421,78 +421,6 @@ where
}
}
-pub struct SquashEmbedVisitor<F1>(pub F1);
-
-impl<'a, 'b, N, E1, E2, F1>
- ExprFVeryGenericVisitor<'a, SubExpr<N, E2>, SubExpr<N, E1>, Label, E1>
- for &'b mut SquashEmbedVisitor<F1>
-where
- N: Clone + 'a,
- F1: FnMut(&E1) -> SubExpr<N, E2>,
-{
- type Error = X;
- type SE2 = SubExpr<N, E2>;
- type L2 = Label;
- type E2 = E2;
-
- fn visit_subexpr(
- &mut self,
- subexpr: &'a SubExpr<N, E1>,
- ) -> Result<Self::SE2, Self::Error> {
- Ok(subexpr.as_ref().visit(&mut **self)?)
- }
-
- fn visit_label(
- &mut self,
- label: &'a Label,
- ) -> Result<Self::L2, Self::Error> {
- Ok(Label::clone(label))
- }
-
- fn visit_binder(
- mut self,
- label: &'a Label,
- subexpr: &'a SubExpr<N, E1>,
- ) -> Result<(Self::L2, Self::SE2), Self::Error> {
- Ok((self.visit_label(label)?, self.visit_subexpr(subexpr)?))
- }
-
- fn visit_embed_squash(
- self,
- embed: &'a E1,
- ) -> Result<SubExpr<N, E2>, Self::Error> {
- Ok((self.0)(embed))
- }
-
- // Called with the result of the map, in the non-embed case.
- // Useful to change the result type, and/or avoid some loss of info
- fn visit_resulting_exprf(
- result: ExprF<Self::SE2, Self::L2, Self::E2>,
- ) -> Result<SubExpr<N, E2>, Self::Error> {
- // TODO: don't lose note
- Ok(SubExpr::from_expr_no_note(result))
- }
-}
-
-pub struct UnNoteVisitor;
-
-impl<'a, 'b, N, E>
- ExprFInFallibleVisitor<'a, SubExpr<N, E>, SubExpr<X, E>, Label, Label, E, E>
- for &'b mut UnNoteVisitor
-where
- E: Clone + 'a,
-{
- fn visit_subexpr(&mut self, subexpr: &'a SubExpr<N, E>) -> SubExpr<X, E> {
- SubExpr::from_expr_no_note(subexpr.as_ref().visit(&mut **self))
- }
- fn visit_embed(self, embed: &'a E) -> E {
- E::clone(embed)
- }
- fn visit_label(&mut self, label: &'a Label) -> Label {
- Label::clone(label)
- }
-}
-
pub struct NoteAbsurdVisitor;
impl<'a, 'b, N, E>
@@ -512,16 +440,14 @@ where
}
}
-pub struct EmbedAbsurdVisitor;
+pub struct AbsurdVisitor;
impl<'a, 'b, N, E>
- ExprFInFallibleVisitor<'a, SubExpr<N, X>, SubExpr<N, E>, Label, Label, X, E>
- for &'b mut EmbedAbsurdVisitor
-where
- N: Clone + 'a,
+ ExprFInFallibleVisitor<'a, SubExpr<X, X>, SubExpr<N, E>, Label, Label, X, E>
+ for &'b mut AbsurdVisitor
{
- fn visit_subexpr(&mut self, subexpr: &'a SubExpr<N, X>) -> SubExpr<N, E> {
- subexpr.rewrap(subexpr.as_ref().visit(&mut **self))
+ fn visit_subexpr(&mut self, subexpr: &'a SubExpr<X, X>) -> SubExpr<N, E> {
+ SubExpr::from_expr_no_note(subexpr.as_ref().visit(&mut **self))
}
fn visit_embed(self, embed: &'a X) -> E {
match *embed {}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-01 12:09:47 +0000