diff options
Diffstat (limited to 'dhall/src/phase')
-rw-r--r-- | dhall/src/phase/mod.rs | 16 | ||||
-rw-r--r-- | dhall/src/phase/normalize.rs | 34 | ||||
-rw-r--r-- | dhall/src/phase/typecheck.rs | 40 |
3 files changed, 49 insertions, 41 deletions
diff --git a/dhall/src/phase/mod.rs b/dhall/src/phase/mod.rs index 0b05227..27a6901 100644 --- a/dhall/src/phase/mod.rs +++ b/dhall/src/phase/mod.rs @@ -4,7 +4,7 @@ use std::path::Path; use dhall_syntax::{Const, Import, Span, SubExpr, X}; -use crate::core::thunk::{Thunk, TypeThunk}; +use crate::core::thunk::{Thunk, TypedThunk}; use crate::core::value::Value; use crate::core::var::{AlphaVar, Shift, Subst}; use crate::error::{EncodeError, Error, ImportError, TypeError}; @@ -31,7 +31,7 @@ pub struct Resolved(ResolvedSubExpr); /// A typed expression #[derive(Debug, Clone)] -pub struct Typed(TypeThunk); +pub struct Typed(TypedThunk); /// A normalized expression. /// @@ -100,18 +100,18 @@ impl Typed { } pub fn from_thunk_and_type(th: Thunk, t: Type) -> Self { - Typed(TypeThunk::from_thunk_and_type(th, t)) + Typed(TypedThunk::from_thunk_and_type(th, t)) } pub fn from_thunk_untyped(th: Thunk) -> Self { - Typed(TypeThunk::from_thunk_untyped(th)) + Typed(TypedThunk::from_thunk_untyped(th)) } pub fn from_const(c: Const) -> Self { - Typed(TypeThunk::from_const(c)) + Typed(TypedThunk::from_const(c)) } pub fn from_value_untyped(v: Value) -> Self { - Typed(TypeThunk::from_value_untyped(v)) + Typed(TypedThunk::from_value_untyped(v)) } - pub fn from_typethunk(th: TypeThunk) -> Self { + pub fn from_typethunk(th: TypedThunk) -> Self { Typed(th) } @@ -135,7 +135,7 @@ impl Typed { pub fn into_type(self) -> Type { self } - pub fn into_typethunk(self) -> TypeThunk { + pub fn into_typethunk(self) -> TypedThunk { self.0 } pub fn to_normalized(&self) -> Normalized { diff --git a/dhall/src/phase/normalize.rs b/dhall/src/phase/normalize.rs index 405677a..644f98c 100644 --- a/dhall/src/phase/normalize.rs +++ b/dhall/src/phase/normalize.rs @@ -6,7 +6,7 @@ use dhall_syntax::{ }; use crate::core::context::NormalizationContext; -use crate::core::thunk::{Thunk, TypeThunk}; +use crate::core::thunk::{Thunk, TypedThunk}; use crate::core::value::Value; use crate::core::var::Subst; use crate::phase::{NormalizedSubExpr, ResolvedSubExpr, Typed}; @@ -22,7 +22,7 @@ pub fn apply_builtin(b: Builtin, args: Vec<Thunk>) -> Value { // Return Ok((unconsumed args, returned value)), or Err(()) if value could not be produced. let ret = match (b, args.as_slice()) { (OptionalNone, [t, r..]) => { - Ok((r, EmptyOptionalLit(TypeThunk::from_thunk(t.clone())))) + Ok((r, EmptyOptionalLit(TypedThunk::from_thunk(t.clone())))) } (NaturalIsZero, [n, r..]) => match &*n.as_value() { NaturalLit(n) => Ok((r, BoolLit(*n == 0))), @@ -144,10 +144,10 @@ pub fn apply_builtin(b: Builtin, args: Vec<Thunk>) -> Value { let mut kts = HashMap::new(); kts.insert( "index".into(), - TypeThunk::from_value(Value::from_builtin(Natural)), + TypedThunk::from_value(Value::from_builtin(Natural)), ); kts.insert("value".into(), t.clone()); - Ok((r, EmptyListLit(TypeThunk::from_value(RecordType(kts))))) + Ok((r, EmptyListLit(TypedThunk::from_value(RecordType(kts))))) } NEListLit(xs) => { let xs = xs @@ -179,10 +179,10 @@ pub fn apply_builtin(b: Builtin, args: Vec<Thunk>) -> Value { r, f.app_val(Value::from_builtin(List).app_thunk(t.clone())) .app_val(ListConsClosure( - TypeThunk::from_thunk(t.clone()), + TypedThunk::from_thunk(t.clone()), None, )) - .app_val(EmptyListLit(TypeThunk::from_thunk(t.clone()))), + .app_val(EmptyListLit(TypedThunk::from_thunk(t.clone()))), )), }, (ListFold, [_, l, _, cons, nil, r..]) => match &*l.as_value() { @@ -213,10 +213,10 @@ pub fn apply_builtin(b: Builtin, args: Vec<Thunk>) -> Value { _ => Ok(( r, f.app_val(Value::from_builtin(Optional).app_thunk(t.clone())) - .app_val(OptionalSomeClosure(TypeThunk::from_thunk( + .app_val(OptionalSomeClosure(TypedThunk::from_thunk( t.clone(), ))) - .app_val(EmptyOptionalLit(TypeThunk::from_thunk( + .app_val(EmptyOptionalLit(TypedThunk::from_thunk( t.clone(), ))), )), @@ -618,7 +618,7 @@ fn apply_binop<'a>(o: BinOp, x: &'a Thunk, y: &'a Thunk) -> Option<Ret<'a>> { } (RecursiveRecordTypeMerge, RecordType(kvs1), RecordType(kvs2)) => { let kvs = merge_maps(kvs1, kvs2, |v1, v2| { - TypeThunk::from_thunk(Thunk::from_partial_expr(ExprF::BinOp( + TypedThunk::from_thunk(Thunk::from_partial_expr(ExprF::BinOp( RecursiveRecordTypeMerge, v1.to_thunk(), v2.to_thunk(), @@ -628,8 +628,8 @@ fn apply_binop<'a>(o: BinOp, x: &'a Thunk, y: &'a Thunk) -> Option<Ret<'a>> { } (Equivalence, _, _) => Ret::Value(Value::Equivalence( - TypeThunk::from_thunk(x.clone()), - TypeThunk::from_thunk(y.clone()), + TypedThunk::from_thunk(x.clone()), + TypedThunk::from_thunk(y.clone()), )), _ => return None, @@ -649,12 +649,12 @@ pub fn normalize_one_layer(expr: ExprF<Thunk, X>) -> Value { ExprF::Annot(x, _) => Ret::Thunk(x), ExprF::Assert(_) => Ret::Expr(expr), ExprF::Lam(x, t, e) => { - Ret::Value(Lam(x.into(), TypeThunk::from_thunk(t), e)) + Ret::Value(Lam(x.into(), TypedThunk::from_thunk(t), e)) } ExprF::Pi(x, t, e) => Ret::Value(Pi( x.into(), - TypeThunk::from_thunk(t), - TypeThunk::from_thunk(e), + TypedThunk::from_thunk(t), + TypedThunk::from_thunk(e), )), ExprF::Let(x, _, v, b) => { let v = Typed::from_thunk_untyped(v); @@ -673,7 +673,7 @@ pub fn normalize_one_layer(expr: ExprF<Thunk, X>) -> Value { let t_borrow = t.as_value(); match &*t_borrow { AppliedBuiltin(Builtin::List, args) if args.len() == 1 => { - Ret::Value(EmptyListLit(TypeThunk::from_thunk( + Ret::Value(EmptyListLit(TypedThunk::from_thunk( args[0].clone(), ))) } @@ -691,12 +691,12 @@ pub fn normalize_one_layer(expr: ExprF<Thunk, X>) -> Value { } ExprF::RecordType(kts) => Ret::Value(RecordType( kts.into_iter() - .map(|(k, t)| (k, TypeThunk::from_thunk(t))) + .map(|(k, t)| (k, TypedThunk::from_thunk(t))) .collect(), )), ExprF::UnionType(kts) => Ret::Value(UnionType( kts.into_iter() - .map(|(k, t)| (k, t.map(|t| TypeThunk::from_thunk(t)))) + .map(|(k, t)| (k, t.map(|t| TypedThunk::from_thunk(t)))) .collect(), )), ExprF::TextLit(elts) => { diff --git a/dhall/src/phase/typecheck.rs b/dhall/src/phase/typecheck.rs index 299997a..a19e1ca 100644 --- a/dhall/src/phase/typecheck.rs +++ b/dhall/src/phase/typecheck.rs @@ -6,7 +6,7 @@ use dhall_syntax::{ }; use crate::core::context::{NormalizationContext, TypecheckContext}; -use crate::core::thunk::{Thunk, TypeThunk}; +use crate::core::thunk::{Thunk, TypedThunk}; use crate::core::value::Value; use crate::core::var::{Shift, Subst}; use crate::error::{TypeError, TypeMessage}; @@ -44,8 +44,12 @@ fn tck_pi_type( let k = function_check(ka, kb); Ok(Typed::from_thunk_and_type( - Value::Pi(x.into(), TypeThunk::from_type(tx), TypeThunk::from_type(te)) - .into_thunk(), + Value::Pi( + x.into(), + TypedThunk::from_type(tx), + TypedThunk::from_type(te), + ) + .into_thunk(), Type::from_const(k), )) } @@ -77,7 +81,7 @@ fn tck_record_type( return Err(TypeError::new(ctx, RecordTypeDuplicateField)) } Entry::Vacant(_) => { - entry.or_insert_with(|| TypeThunk::from_type(t.clone())) + entry.or_insert_with(|| TypedThunk::from_type(t.clone())) } }; } @@ -119,7 +123,7 @@ fn tck_union_type( return Err(TypeError::new(ctx, UnionTypeDuplicateField)) } Entry::Vacant(_) => entry.or_insert_with(|| { - t.as_ref().map(|t| TypeThunk::from_type(t.clone())) + t.as_ref().map(|t| TypedThunk::from_type(t.clone())) }), }; } @@ -334,7 +338,7 @@ fn type_with( let b = type_with(&ctx2, b.clone())?; let v = Value::Lam( x.clone().into(), - TypeThunk::from_type(tx.clone()), + TypedThunk::from_type(tx.clone()), b.to_thunk(), ); let tb = b.get_type()?.into_owned(); @@ -658,8 +662,8 @@ fn type_last_layer( // records of records when merging. fn combine_record_types( ctx: &TypecheckContext, - kts_l: HashMap<Label, TypeThunk>, - kts_r: HashMap<Label, TypeThunk>, + kts_l: HashMap<Label, TypedThunk>, + kts_r: HashMap<Label, TypedThunk>, ) -> Result<Typed, TypeError> { use crate::phase::normalize::outer_join; @@ -667,8 +671,8 @@ fn type_last_layer( // are records themselves, then we hit the recursive case. // Otherwise we have a field collision. let combine = |k: &Label, - inner_l: &TypeThunk, - inner_r: &TypeThunk| + inner_l: &TypedThunk, + inner_r: &TypedThunk| -> Result<Typed, TypeError> { match (inner_l.to_value(), inner_r.to_value()) { ( @@ -686,7 +690,9 @@ fn type_last_layer( let kts: HashMap<Label, Result<Typed, TypeError>> = outer_join( |l| Ok(l.to_type()), |r| Ok(r.to_type()), - |k: &Label, l: &TypeThunk, r: &TypeThunk| combine(k, l, r), + |k: &Label, l: &TypedThunk, r: &TypedThunk| { + combine(k, l, r) + }, &kts_l, &kts_r, ); @@ -729,8 +735,8 @@ fn type_last_layer( // records of records when merging. fn combine_record_types( ctx: &TypecheckContext, - kts_l: HashMap<Label, TypeThunk>, - kts_r: HashMap<Label, TypeThunk>, + kts_l: HashMap<Label, TypedThunk>, + kts_r: HashMap<Label, TypedThunk>, ) -> Result<Typed, TypeError> { use crate::phase::normalize::intersection_with_key; @@ -738,8 +744,8 @@ fn type_last_layer( // are records themselves, then we hit the recursive case. // Otherwise we have a field collision. let combine = |k: &Label, - kts_l_inner: &TypeThunk, - kts_r_inner: &TypeThunk| + kts_l_inner: &TypedThunk, + kts_r_inner: &TypedThunk| -> Result<Typed, TypeError> { match (kts_l_inner.to_value(), kts_r_inner.to_value()) { ( @@ -755,7 +761,9 @@ fn type_last_layer( }; let kts = intersection_with_key( - |k: &Label, l: &TypeThunk, r: &TypeThunk| combine(k, l, r), + |k: &Label, l: &TypedThunk, r: &TypedThunk| { + combine(k, l, r) + }, &kts_l, &kts_r, ); |