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authorNadrieril2019-08-13 19:31:23 +0200
committerNadrieril2019-08-13 19:31:23 +0200
commit5895c3aa6552f75d7e5202be561f9734fe8945e7 (patch)
tree80c4258ce94e82af29bf6a09f483c38601a16b34
parentcbd62bb57bcc94e0133c57437488a5af22a0b1c2 (diff)
No need to track the absence of `Span`s at the type level
-rw-r--r--dhall/src/phase/binary.rs45
-rw-r--r--dhall/src/phase/mod.rs10
-rw-r--r--dhall/src/phase/parse.rs4
-rw-r--r--dhall/src/phase/typecheck.rs16
-rw-r--r--dhall_syntax/src/core/expr.rs131
-rw-r--r--dhall_syntax/src/core/visitor.rs40
-rw-r--r--dhall_syntax/src/parser.rs39
-rw-r--r--dhall_syntax/src/printer.rs12
-rw-r--r--serde_dhall/src/serde.rs9
9 files changed, 126 insertions, 180 deletions
diff --git a/dhall/src/phase/binary.rs b/dhall/src/phase/binary.rs
index f4a9cc1..3292617 100644
--- a/dhall/src/phase/binary.rs
+++ b/dhall/src/phase/binary.rs
@@ -631,14 +631,12 @@ where
ImportLocation::Remote(url) => {
match &url.headers {
None => ser_seq.serialize_element(&Null)?,
- Some(location_hashed) => {
- ser_seq.serialize_element(&self::Serialize::Expr(
- &SubExpr::from_expr_no_note(ExprF::Embed(Import {
- mode: ImportMode::Code,
- location_hashed: location_hashed.as_ref().clone(),
- })),
- ))?
- }
+ Some(location_hashed) => ser_seq.serialize_element(
+ &self::Serialize::Expr(&rc(ExprF::Embed(Import {
+ mode: ImportMode::Code,
+ location_hashed: location_hashed.as_ref().clone(),
+ }))),
+ )?,
};
ser_seq.serialize_element(&url.authority)?;
for p in &url.path {
@@ -689,13 +687,13 @@ impl<'a> serde::ser::Serialize for Serialize<'a> {
}
}
-fn collect_nested_applications<'a, N, E>(
- e: &'a SubExpr<N, E>,
-) -> (&'a SubExpr<N, E>, Vec<&'a SubExpr<N, E>>) {
- fn go<'a, N, E>(
- e: &'a SubExpr<N, E>,
- vec: &mut Vec<&'a SubExpr<N, E>>,
- ) -> &'a SubExpr<N, E> {
+fn collect_nested_applications<'a, E>(
+ e: &'a SubExpr<E>,
+) -> (&'a SubExpr<E>, Vec<&'a SubExpr<E>>) {
+ fn go<'a, E>(
+ e: &'a SubExpr<E>,
+ vec: &mut Vec<&'a SubExpr<E>>,
+ ) -> &'a SubExpr<E> {
match e.as_ref() {
ExprF::App(f, a) => {
vec.push(a);
@@ -709,16 +707,15 @@ fn collect_nested_applications<'a, N, E>(
(e, vec)
}
-type LetBinding<'a, N, E> =
- (&'a Label, &'a Option<SubExpr<N, E>>, &'a SubExpr<N, E>);
+type LetBinding<'a, E> = (&'a Label, &'a Option<SubExpr<E>>, &'a SubExpr<E>);
-fn collect_nested_lets<'a, N, E>(
- e: &'a SubExpr<N, E>,
-) -> (&'a SubExpr<N, E>, Vec<LetBinding<'a, N, E>>) {
- fn go<'a, N, E>(
- e: &'a SubExpr<N, E>,
- vec: &mut Vec<LetBinding<'a, N, E>>,
- ) -> &'a SubExpr<N, E> {
+fn collect_nested_lets<'a, E>(
+ e: &'a SubExpr<E>,
+) -> (&'a SubExpr<E>, Vec<LetBinding<'a, E>>) {
+ fn go<'a, E>(
+ e: &'a SubExpr<E>,
+ vec: &mut Vec<LetBinding<'a, E>>,
+ ) -> &'a SubExpr<E> {
match e.as_ref() {
ExprF::Let(l, t, v, e) => {
vec.push((l, t, v));
diff --git a/dhall/src/phase/mod.rs b/dhall/src/phase/mod.rs
index 27a6901..8c93889 100644
--- a/dhall/src/phase/mod.rs
+++ b/dhall/src/phase/mod.rs
@@ -2,7 +2,7 @@ use std::borrow::Cow;
use std::fmt::Display;
use std::path::Path;
-use dhall_syntax::{Const, Import, Span, SubExpr, X};
+use dhall_syntax::{Const, Import, SubExpr, X};
use crate::core::thunk::{Thunk, TypedThunk};
use crate::core::value::Value;
@@ -17,10 +17,10 @@ pub(crate) mod parse;
pub(crate) mod resolve;
pub(crate) mod typecheck;
-pub type ParsedSubExpr = SubExpr<Span, Import>;
-pub type DecodedSubExpr = SubExpr<X, Import>;
-pub type ResolvedSubExpr = SubExpr<Span, Normalized>;
-pub type NormalizedSubExpr = SubExpr<X, X>;
+pub type ParsedSubExpr = SubExpr<Import>;
+pub type DecodedSubExpr = SubExpr<Import>;
+pub type ResolvedSubExpr = SubExpr<Normalized>;
+pub type NormalizedSubExpr = SubExpr<X>;
#[derive(Debug, Clone)]
pub struct Parsed(ParsedSubExpr, ImportRoot);
diff --git a/dhall/src/phase/parse.rs b/dhall/src/phase/parse.rs
index 734f6e1..9f3f2f4 100644
--- a/dhall/src/phase/parse.rs
+++ b/dhall/src/phase/parse.rs
@@ -25,7 +25,7 @@ pub fn parse_str(s: &str) -> Result<Parsed, Error> {
pub fn parse_binary(data: &[u8]) -> Result<Parsed, Error> {
let expr = crate::phase::binary::decode(data)?;
let root = ImportRoot::LocalDir(std::env::current_dir()?);
- Ok(Parsed(expr.note_absurd(), root))
+ Ok(Parsed(expr, root))
}
pub fn parse_binary_file(f: &Path) -> Result<Parsed, Error> {
@@ -33,5 +33,5 @@ pub fn parse_binary_file(f: &Path) -> Result<Parsed, Error> {
File::open(f)?.read_to_end(&mut buffer)?;
let expr = crate::phase::binary::decode(&buffer)?;
let root = ImportRoot::LocalDir(f.parent().unwrap().to_owned());
- Ok(Parsed(expr.note_absurd(), root))
+ Ok(Parsed(expr, root))
}
diff --git a/dhall/src/phase/typecheck.rs b/dhall/src/phase/typecheck.rs
index a19e1ca..ecf9793 100644
--- a/dhall/src/phase/typecheck.rs
+++ b/dhall/src/phase/typecheck.rs
@@ -1,8 +1,8 @@
use std::collections::HashMap;
use dhall_syntax::{
- rc, Builtin, Const, Expr, ExprF, InterpolatedTextContents, Label, Span,
- SubExpr, X,
+ rc, Builtin, Const, Expr, ExprF, InterpolatedTextContents, Label, SubExpr,
+ X,
};
use crate::core::context::{NormalizationContext, TypecheckContext};
@@ -214,7 +214,7 @@ macro_rules! make_type {
};
}
-fn type_of_builtin(b: Builtin) -> Expr<X, X> {
+fn type_of_builtin(b: Builtin) -> Expr<X> {
use dhall_syntax::Builtin::*;
match b {
Bool | Natural | Integer | Double | Text => make_type!(Type),
@@ -303,7 +303,7 @@ fn type_of_builtin(b: Builtin) -> Expr<X, X> {
/// and turn it into a type, typechecking it along the way.
pub fn mktype(
ctx: &TypecheckContext,
- e: SubExpr<Span, Normalized>,
+ e: SubExpr<Normalized>,
) -> Result<Type, TypeError> {
Ok(type_with(ctx, e)?.to_type())
}
@@ -326,7 +326,7 @@ enum Ret {
/// normalized as well.
fn type_with(
ctx: &TypecheckContext,
- e: SubExpr<Span, Normalized>,
+ e: SubExpr<Normalized>,
) -> Result<Typed, TypeError> {
use dhall_syntax::ExprF::{Annot, Embed, Lam, Let, Pi, Var};
@@ -1002,7 +1002,7 @@ fn type_last_layer(
/// `typeOf` is the same as `type_with` with an empty context, meaning that the
/// expression must be closed (i.e. no free variables), otherwise type-checking
/// will fail.
-fn type_of(e: SubExpr<Span, Normalized>) -> Result<Typed, TypeError> {
+fn type_of(e: SubExpr<Normalized>) -> Result<Typed, TypeError> {
let ctx = TypecheckContext::new();
let e = type_with(&ctx, e)?;
// Ensure `e` has a type (i.e. `e` is not `Sort`)
@@ -1015,8 +1015,8 @@ pub fn typecheck(e: Resolved) -> Result<Typed, TypeError> {
}
pub fn typecheck_with(e: Resolved, ty: &Type) -> Result<Typed, TypeError> {
- let expr: SubExpr<_, _> = e.0;
- let ty: SubExpr<_, _> = ty.to_expr().absurd();
+ let expr: SubExpr<_> = e.0;
+ let ty: SubExpr<_> = ty.to_expr().absurd();
type_of(expr.rewrap(ExprF::Annot(expr.clone(), ty)))
}
pub fn skip_typecheck(e: Resolved) -> Typed {
diff --git a/dhall_syntax/src/core/expr.rs b/dhall_syntax/src/core/expr.rs
index 6522cb1..0cbece3 100644
--- a/dhall_syntax/src/core/expr.rs
+++ b/dhall_syntax/src/core/expr.rs
@@ -19,6 +19,30 @@ pub fn trivial_result<T>(x: Result<T, X>) -> T {
}
}
+/// A location in the source text
+#[derive(Debug, Clone)]
+pub struct Span {
+ input: Rc<str>,
+ /// # Safety
+ ///
+ /// Must be a valid character boundary index into `input`.
+ start: usize,
+ /// # Safety
+ ///
+ /// Must be a valid character boundary index into `input`.
+ end: usize,
+}
+
+impl Span {
+ pub(crate) fn make(input: Rc<str>, sp: pest::Span) -> Self {
+ Span {
+ input,
+ start: sp.start(),
+ end: sp.end(),
+ }
+ }
+}
+
/// Double with bitwise equality
#[derive(Debug, Copy, Clone)]
pub struct NaiveDouble(f64);
@@ -137,23 +161,19 @@ pub enum Builtin {
TextShow,
}
-pub type ParsedExpr = SubExpr<X, Import>;
-pub type ResolvedExpr = SubExpr<X, X>;
-pub type DhallExpr = ResolvedExpr;
-
// Each node carries an annotation. In practice it's either X (no annotation) or a Span.
#[derive(Debug)]
-pub struct SubExpr<Note, Embed>(Rc<(Expr<Note, Embed>, Option<Note>)>);
+pub struct SubExpr<Embed>(Rc<(Expr<Embed>, Option<Span>)>);
-impl<Note, Embed: PartialEq> std::cmp::PartialEq for SubExpr<Note, Embed> {
+impl<Embed: PartialEq> std::cmp::PartialEq for SubExpr<Embed> {
fn eq(&self, other: &Self) -> bool {
self.0.as_ref().0 == other.0.as_ref().0
}
}
-impl<Note, Embed: Eq> std::cmp::Eq for SubExpr<Note, Embed> {}
+impl<Embed: Eq> std::cmp::Eq for SubExpr<Embed> {}
-pub type Expr<Note, Embed> = ExprF<SubExpr<Note, Embed>, Embed>;
+pub type Expr<Embed> = ExprF<SubExpr<Embed>, Embed>;
/// Syntax tree for expressions
// Having the recursion out of the enum definition enables writing
@@ -293,31 +313,22 @@ impl<SE, E> ExprF<SE, E> {
}
}
-impl<N, E> Expr<N, E> {
+impl<E> Expr<E> {
fn traverse_embed<E2, Err>(
&self,
visit_embed: impl FnMut(&E) -> Result<E2, Err>,
- ) -> Result<Expr<N, E2>, Err>
- where
- N: Clone,
- {
+ ) -> Result<Expr<E2>, Err> {
self.visit(&mut visitor::TraverseEmbedVisitor(visit_embed))
}
- fn map_embed<E2>(&self, mut map_embed: impl FnMut(&E) -> E2) -> Expr<N, E2>
- where
- N: Clone,
- {
+ fn map_embed<E2>(&self, mut map_embed: impl FnMut(&E) -> E2) -> Expr<E2> {
trivial_result(self.traverse_embed(|x| Ok(map_embed(x))))
}
pub fn traverse_resolve<E2, Err>(
&self,
visit_embed: impl FnMut(&E) -> Result<E2, Err>,
- ) -> Result<Expr<N, E2>, Err>
- where
- N: Clone,
- {
+ ) -> Result<Expr<E2>, Err> {
self.traverse_resolve_with_visitor(&mut visitor::ResolveVisitor(
visit_embed,
))
@@ -326,9 +337,8 @@ impl<N, E> Expr<N, E> {
pub(crate) fn traverse_resolve_with_visitor<E2, Err, F1>(
&self,
visitor: &mut visitor::ResolveVisitor<F1>,
- ) -> Result<Expr<N, E2>, Err>
+ ) -> Result<Expr<E2>, Err>
where
- N: Clone,
F1: FnMut(&E) -> Result<E2, Err>,
{
match self {
@@ -341,59 +351,44 @@ impl<N, E> Expr<N, E> {
}
}
-impl Expr<X, X> {
- pub fn absurd<N, E>(&self) -> Expr<N, E> {
+impl Expr<X> {
+ pub fn absurd<E>(&self) -> Expr<E> {
self.visit(&mut visitor::AbsurdVisitor)
}
}
-impl<E: Clone> Expr<X, E> {
- pub fn note_absurd<N>(&self) -> Expr<N, E> {
- self.visit(&mut visitor::NoteAbsurdVisitor)
- }
-}
-
-impl<N, E> SubExpr<N, E> {
- pub fn as_ref(&self) -> &Expr<N, E> {
+impl<E> SubExpr<E> {
+ pub fn as_ref(&self) -> &Expr<E> {
&self.0.as_ref().0
}
- pub fn new(x: Expr<N, E>, n: N) -> Self {
+ pub fn new(x: Expr<E>, n: Span) -> Self {
SubExpr(Rc::new((x, Some(n))))
}
- pub fn from_expr_no_note(x: Expr<N, E>) -> Self {
+ pub fn from_expr_no_span(x: Expr<E>) -> Self {
SubExpr(Rc::new((x, None)))
}
pub fn from_builtin(b: Builtin) -> Self {
- SubExpr::from_expr_no_note(ExprF::Builtin(b))
+ SubExpr::from_expr_no_span(ExprF::Builtin(b))
}
- pub fn rewrap<E2>(&self, x: Expr<N, E2>) -> SubExpr<N, E2>
- where
- N: Clone,
- {
+ pub fn rewrap<E2>(&self, x: Expr<E2>) -> SubExpr<E2> {
SubExpr(Rc::new((x, (self.0).1.clone())))
}
pub fn traverse_embed<E2, Err>(
&self,
visit_embed: impl FnMut(&E) -> Result<E2, Err>,
- ) -> Result<SubExpr<N, E2>, Err>
- where
- N: Clone,
- {
+ ) -> Result<SubExpr<E2>, Err> {
Ok(self.rewrap(self.as_ref().traverse_embed(visit_embed)?))
}
pub fn map_embed<E2>(
&self,
map_embed: impl FnMut(&E) -> E2,
- ) -> SubExpr<N, E2>
- where
- N: Clone,
- {
+ ) -> SubExpr<E2> {
self.rewrap(self.as_ref().map_embed(map_embed))
}
@@ -401,10 +396,7 @@ impl<N, E> SubExpr<N, E> {
&'a self,
map_expr: impl FnMut(&'a Self) -> Self,
map_under_binder: impl FnMut(&'a Label, &'a Self) -> Self,
- ) -> Self
- where
- N: Clone,
- {
+ ) -> Self {
match self.as_ref() {
ExprF::Embed(_) => SubExpr::clone(self),
// This calls ExprF::map_ref
@@ -419,35 +411,38 @@ impl<N, E> SubExpr<N, E> {
pub fn traverse_resolve<E2, Err>(
&self,
visit_embed: impl FnMut(&E) -> Result<E2, Err>,
- ) -> Result<SubExpr<N, E2>, Err>
- where
- N: Clone,
- {
+ ) -> Result<SubExpr<E2>, Err> {
Ok(self.rewrap(self.as_ref().traverse_resolve(visit_embed)?))
}
}
-impl SubExpr<X, X> {
- pub fn absurd<N: Clone, T>(&self) -> SubExpr<N, T> {
- SubExpr::from_expr_no_note(self.as_ref().absurd())
- }
-}
-
-impl<E: Clone> SubExpr<X, E> {
- pub fn note_absurd<N>(&self) -> SubExpr<N, E> {
- SubExpr::from_expr_no_note(self.as_ref().note_absurd())
+impl SubExpr<X> {
+ pub fn absurd<T>(&self) -> SubExpr<T> {
+ SubExpr::from_expr_no_span(self.as_ref().absurd())
}
}
-impl<N, E> Clone for SubExpr<N, E> {
+impl<E> Clone for SubExpr<E> {
fn clone(&self) -> Self {
SubExpr(Rc::clone(&self.0))
}
}
// Should probably rename this
-pub fn rc<E>(x: Expr<X, E>) -> SubExpr<X, E> {
- SubExpr::from_expr_no_note(x)
+pub fn rc<E>(x: Expr<E>) -> SubExpr<E> {
+ SubExpr::from_expr_no_span(x)
+}
+
+pub(crate) fn spanned(
+ span: Span,
+ x: crate::parser::ParsedExpr,
+) -> crate::parser::ParsedSubExpr {
+ SubExpr::new(x, span)
+}
+pub(crate) fn unspanned(
+ x: crate::parser::ParsedExpr,
+) -> crate::parser::ParsedSubExpr {
+ SubExpr::from_expr_no_span(x)
}
/// Add an isize to an usize
diff --git a/dhall_syntax/src/core/visitor.rs b/dhall_syntax/src/core/visitor.rs
index 18f76d9..50ec68a 100644
--- a/dhall_syntax/src/core/visitor.rs
+++ b/dhall_syntax/src/core/visitor.rs
@@ -336,19 +336,18 @@ where
pub struct TraverseEmbedVisitor<F1>(pub F1);
-impl<'a, 'b, N, E, E2, Err, F1>
- ExprFFallibleVisitor<'a, SubExpr<N, E>, SubExpr<N, E2>, E, E2>
+impl<'a, 'b, E, E2, Err, F1>
+ ExprFFallibleVisitor<'a, SubExpr<E>, SubExpr<E2>, E, E2>
for &'b mut TraverseEmbedVisitor<F1>
where
- N: Clone + 'a,
F1: FnMut(&E) -> Result<E2, Err>,
{
type Error = Err;
fn visit_subexpr(
&mut self,
- subexpr: &'a SubExpr<N, E>,
- ) -> Result<SubExpr<N, E2>, Self::Error> {
+ subexpr: &'a SubExpr<E>,
+ ) -> Result<SubExpr<E2>, Self::Error> {
Ok(subexpr.rewrap(subexpr.as_ref().visit(&mut **self)?))
}
fn visit_embed(self, embed: &'a E) -> Result<E2, Self::Error> {
@@ -358,19 +357,18 @@ where
pub struct ResolveVisitor<F1>(pub F1);
-impl<'a, 'b, N, E, E2, Err, F1>
- ExprFFallibleVisitor<'a, SubExpr<N, E>, SubExpr<N, E2>, E, E2>
+impl<'a, 'b, E, E2, Err, F1>
+ ExprFFallibleVisitor<'a, SubExpr<E>, SubExpr<E2>, E, E2>
for &'b mut ResolveVisitor<F1>
where
- N: Clone + 'a,
F1: FnMut(&E) -> Result<E2, Err>,
{
type Error = Err;
fn visit_subexpr(
&mut self,
- subexpr: &'a SubExpr<N, E>,
- ) -> Result<SubExpr<N, E2>, Self::Error> {
+ subexpr: &'a SubExpr<E>,
+ ) -> Result<SubExpr<E2>, Self::Error> {
Ok(subexpr.rewrap(
subexpr
.as_ref()
@@ -381,30 +379,14 @@ where
(self.0)(embed)
}
}
-pub struct NoteAbsurdVisitor;
-
-impl<'a, 'b, N, E>
- ExprFInFallibleVisitor<'a, SubExpr<X, E>, SubExpr<N, E>, E, E>
- for &'b mut NoteAbsurdVisitor
-where
- E: Clone + 'a,
-{
- fn visit_subexpr(&mut self, subexpr: &'a SubExpr<X, E>) -> SubExpr<N, E> {
- SubExpr::from_expr_no_note(subexpr.as_ref().visit(&mut **self))
- }
- fn visit_embed(self, embed: &'a E) -> E {
- E::clone(embed)
- }
-}
pub struct AbsurdVisitor;
-impl<'a, 'b, N, E>
- ExprFInFallibleVisitor<'a, SubExpr<X, X>, SubExpr<N, E>, X, E>
+impl<'a, 'b, E> ExprFInFallibleVisitor<'a, SubExpr<X>, SubExpr<E>, X, E>
for &'b mut AbsurdVisitor
{
- 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_subexpr(&mut self, subexpr: &'a SubExpr<X>) -> SubExpr<E> {
+ SubExpr::from_expr_no_span(subexpr.as_ref().visit(&mut **self))
}
fn visit_embed(self, embed: &'a X) -> E {
match *embed {}
diff --git a/dhall_syntax/src/parser.rs b/dhall_syntax/src/parser.rs
index 9ae6dc8..1ab6e6d 100644
--- a/dhall_syntax/src/parser.rs
+++ b/dhall_syntax/src/parser.rs
@@ -15,46 +15,15 @@ use crate::*;
// their own crate because they are quite general and useful. For now they
// are here and hopefully you can figure out how they work.
-type ParsedExpr = Expr<Span, Import>;
-type ParsedSubExpr = SubExpr<Span, Import>;
-type ParsedText = InterpolatedText<SubExpr<Span, Import>>;
-type ParsedTextContents = InterpolatedTextContents<SubExpr<Span, Import>>;
+pub(crate) type ParsedExpr = Expr<Import>;
+pub(crate) type ParsedSubExpr = SubExpr<Import>;
+type ParsedText = InterpolatedText<SubExpr<Import>>;
+type ParsedTextContents = InterpolatedTextContents<SubExpr<Import>>;
pub type ParseError = pest::error::Error<Rule>;
pub type ParseResult<T> = Result<T, ParseError>;
-fn unspanned(x: ParsedExpr) -> ParsedSubExpr {
- SubExpr::from_expr_no_note(x)
-}
-
-#[derive(Debug, Clone)]
-pub struct Span {
- input: Rc<str>,
- /// # Safety
- ///
- /// Must be a valid character boundary index into `input`.
- start: usize,
- /// # Safety
- ///
- /// Must be a valid character boundary index into `input`.
- end: usize,
-}
-
-impl Span {
- fn make(input: Rc<str>, sp: pest::Span) -> Self {
- Span {
- input,
- start: sp.start(),
- end: sp.end(),
- }
- }
-}
-
-fn spanned(span: Span, x: ParsedExpr) -> ParsedSubExpr {
- SubExpr::new(x, span)
-}
-
#[derive(Debug)]
enum Either<A, B> {
Left(A),
diff --git a/dhall_syntax/src/printer.rs b/dhall_syntax/src/printer.rs
index 70b224e..95eafe5 100644
--- a/dhall_syntax/src/printer.rs
+++ b/dhall_syntax/src/printer.rs
@@ -111,21 +111,21 @@ enum PrintPhase {
// Wraps an Expr with a phase, so that phase selsction can be done
// separate from the actual printing
#[derive(Clone)]
-struct PhasedExpr<'a, S, A>(&'a SubExpr<S, A>, PrintPhase);
+struct PhasedExpr<'a, A>(&'a SubExpr<A>, PrintPhase);
-impl<'a, S: Clone, A: Display + Clone> Display for PhasedExpr<'a, S, A> {
+impl<'a, A: Display + Clone> Display for PhasedExpr<'a, A> {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
self.0.as_ref().fmt_phase(f, self.1)
}
}
-impl<'a, S: Clone, A: Display + Clone> PhasedExpr<'a, S, A> {
- fn phase(self, phase: PrintPhase) -> PhasedExpr<'a, S, A> {
+impl<'a, A: Display + Clone> PhasedExpr<'a, A> {
+ fn phase(self, phase: PrintPhase) -> PhasedExpr<'a, A> {
PhasedExpr(self.0, phase)
}
}
-impl<S: Clone, A: Display + Clone> Expr<S, A> {
+impl<A: Display + Clone> Expr<A> {
fn fmt_phase(
&self,
f: &mut fmt::Formatter,
@@ -196,7 +196,7 @@ impl<S: Clone, A: Display + Clone> Expr<S, A> {
}
}
-impl<S: Clone, A: Display + Clone> Display for SubExpr<S, A> {
+impl<A: Display + Clone> Display for SubExpr<A> {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
self.as_ref().fmt_phase(f, PrintPhase::Base)
}
diff --git a/serde_dhall/src/serde.rs b/serde_dhall/src/serde.rs
index 10d5a17..d891127 100644
--- a/serde_dhall/src/serde.rs
+++ b/serde_dhall/src/serde.rs
@@ -1,7 +1,10 @@
+use std::borrow::Cow;
+
+use dhall::phase::NormalizedSubExpr;
+use dhall_syntax::ExprF;
+
use crate::de::{Deserialize, Error, Result};
use crate::Value;
-use dhall_syntax::{ExprF, SubExpr, X};
-use std::borrow::Cow;
impl<'a, T> Deserialize for T
where
@@ -12,7 +15,7 @@ where
}
}
-struct Deserializer<'a>(Cow<'a, SubExpr<X, X>>);
+struct Deserializer<'a>(Cow<'a, NormalizedSubExpr>);
impl<'de: 'a, 'a> serde::de::IntoDeserializer<'de, Error> for Deserializer<'a> {
type Deserializer = Deserializer<'a>;