diff options
Diffstat (limited to 'dhall/src')
| -rw-r--r-- | dhall/src/semantics/nze/normalize.rs | 94 |
1 files changed, 92 insertions, 2 deletions
diff --git a/dhall/src/semantics/nze/normalize.rs b/dhall/src/semantics/nze/normalize.rs index fbb3647..a00b7ff 100644 --- a/dhall/src/semantics/nze/normalize.rs +++ b/dhall/src/semantics/nze/normalize.rs @@ -185,6 +185,7 @@ fn apply_binop<'a>( } Ret::ValueKind(RecordLit(kvs)) } + (RightBiasedRecordMerge, _, _) if x == y => Ret::ValueRef(y), (RecursiveRecordMerge, _, RecordLit(kvs)) if kvs.is_empty() => { Ret::ValueRef(x) @@ -244,8 +245,8 @@ pub(crate) fn normalize_one_layer( ) -> ValueKind { use ValueKind::{ BoolLit, DoubleLit, EmptyListLit, EmptyOptionalLit, IntegerLit, - NEListLit, NEOptionalLit, NaturalLit, RecordLit, RecordType, - UnionConstructor, UnionLit, UnionType, + NEListLit, NEOptionalLit, NaturalLit, PartialExpr, RecordLit, + RecordType, UnionConstructor, UnionLit, UnionType, }; let ret = match expr { @@ -331,6 +332,13 @@ pub(crate) fn normalize_one_layer( .filter_map(|l| kvs.get(l).map(|x| (l.clone(), x.clone()))) .collect(), )), + PartialExpr(ExprKind::Projection(v2, _)) => { + return normalize_one_layer( + ExprKind::Projection(v2.clone(), ls.clone()), + ty, + env, + ) + } _ => Ret::Expr(expr), }, ExprKind::Field(ref v, ref l) => match v.kind() { @@ -343,6 +351,88 @@ pub(crate) fn normalize_one_layer( kts.clone(), v.get_type().unwrap(), )), + PartialExpr(ExprKind::BinOp( + BinOp::RightBiasedRecordMerge, + x, + y, + )) => match (x.kind(), y.kind()) { + (_, RecordLit(kvs)) => match kvs.get(l) { + Some(r) => Ret::Value(r.clone()), + None => { + return normalize_one_layer( + ExprKind::Field(x.clone(), l.clone()), + ty, + env, + ) + } + }, + (RecordLit(kvs), _) => match kvs.get(l) { + Some(r) => Ret::Expr(ExprKind::Field( + Value::from_kind_and_type( + PartialExpr(ExprKind::BinOp( + BinOp::RightBiasedRecordMerge, + Value::from_kind_and_type( + RecordLit({ + let mut kvs = HashMap::new(); + kvs.insert(l.clone(), r.clone()); + kvs + }), + Value::from_kind_and_type( + RecordType({ + let mut kvs = HashMap::new(); + kvs.insert( + l.clone(), + r.get_type_not_sort(), + ); + kvs + }), + r.get_type_not_sort() + .get_type_not_sort(), + ), + ), + y.clone(), + )), + v.get_type_not_sort(), + ), + l.clone(), + )), + None => { + return normalize_one_layer( + ExprKind::Field(y.clone(), l.clone()), + ty, + env, + ) + } + }, + _ => Ret::Expr(expr), + }, + PartialExpr(ExprKind::BinOp( + BinOp::RecursiveRecordTypeMerge, + x, + y, + )) => match (x.kind(), y.kind()) { + (RecordLit(kvs), _) => match kvs.get(l) { + Some(_) => Ret::Expr(expr), + None => { + return normalize_one_layer( + ExprKind::Field(y.clone(), l.clone()), + ty, + env, + ) + } + }, + (_, RecordLit(kvs)) => match kvs.get(l) { + Some(_) => Ret::Expr(expr), + None => { + return normalize_one_layer( + ExprKind::Field(x.clone(), l.clone()), + ty, + env, + ) + } + }, + _ => Ret::Expr(expr), + }, _ => Ret::Expr(expr), }, ExprKind::ProjectionByExpr(_, _) => { |