diff options
Diffstat (limited to 'dhall')
| -rw-r--r-- | dhall/src/normalize.rs | 46 |
1 files changed, 32 insertions, 14 deletions
diff --git a/dhall/src/normalize.rs b/dhall/src/normalize.rs index 5c9cf5d..5766766 100644 --- a/dhall/src/normalize.rs +++ b/dhall/src/normalize.rs @@ -248,6 +248,7 @@ where enum WHNF { Closure(Closure), BoolLit(bool), + NaturalLit(Natural), EmptyListLit(NormalizationContext, InputSubExpr), NEListLit(Vec<(NormalizationContext, Vec<InputSubExpr>)>), RecordLit(NormalizationContext, BTreeMap<Label, InputSubExpr>), @@ -261,6 +262,7 @@ impl WHNF { match self { WHNF::Closure(c) => c.normalize_to_expr(), WHNF::BoolLit(b) => rc(ExprF::BoolLit(b)), + WHNF::NaturalLit(n) => rc(ExprF::NaturalLit(n)), WHNF::EmptyListLit(ctx, e) => rc(ExprF::EmptyListLit( normalize_whnf(&ctx, e).normalize_to_expr(), )), @@ -301,6 +303,7 @@ impl WHNF { WHNF::Closure(c) => WHNF::Closure(c.shift0(delta, label)), WHNF::Expr(e) => WHNF::Expr(shift0(delta, label, &e)), WHNF::BoolLit(b) => WHNF::BoolLit(b), + WHNF::NaturalLit(n) => WHNF::NaturalLit(n), WHNF::EmptyListLit(ctx, e) => { WHNF::EmptyListLit(ctx, shift0(delta, label, &e)) } @@ -518,6 +521,7 @@ fn reval(ctx: &NormalizationContext, expr: OutputSubExpr) -> WHNF { WHNF::Closure(Closure::AppliedBuiltin(ctx.clone(), b, vec![])) } ExprF::BoolLit(b) => WHNF::BoolLit(b), + ExprF::NaturalLit(n) => WHNF::NaturalLit(n), ExprF::EmptyListLit(e) => WHNF::EmptyListLit(ctx.clone(), e), ExprF::NEListLit(elts) => WHNF::NEListLit(vec![(ctx.clone(), elts)]), ExprF::RecordLit(kvs) => WHNF::RecordLit(ctx.clone(), kvs), @@ -549,6 +553,7 @@ fn normalize_whnf(ctx: &NormalizationContext, expr: InputSubExpr) -> WHNF { )) } ExprF::BoolLit(b) => return WHNF::BoolLit(*b), + ExprF::NaturalLit(n) => return WHNF::NaturalLit(*n), ExprF::EmptyListLit(e) => { return WHNF::EmptyListLit(ctx.clone(), e.clone()) } @@ -619,6 +624,23 @@ fn normalize_last_layer( return WHNF::BoolLit(x != y) } + BinOp(NaturalPlus, WHNF::NaturalLit(0), y) => return y, + BinOp(NaturalPlus, x, WHNF::NaturalLit(0)) => return x, + BinOp(NaturalTimes, WHNF::NaturalLit(0), _) => { + return WHNF::NaturalLit(0) + } + BinOp(NaturalTimes, _, WHNF::NaturalLit(0)) => { + return WHNF::NaturalLit(0) + } + BinOp(NaturalTimes, WHNF::NaturalLit(1), y) => return y, + BinOp(NaturalTimes, x, WHNF::NaturalLit(1)) => return x, + BinOp(NaturalPlus, WHNF::NaturalLit(x), WHNF::NaturalLit(y)) => { + return WHNF::NaturalLit(x + y) + } + BinOp(NaturalTimes, WHNF::NaturalLit(x), WHNF::NaturalLit(y)) => { + return WHNF::NaturalLit(x * y) + } + BinOp(ListAppend, WHNF::EmptyListLit(_, _), y) => return y, BinOp(ListAppend, x, WHNF::EmptyListLit(_, _)) => return x, BinOp(ListAppend, WHNF::NEListLit(xs), WHNF::NEListLit(ys)) => { @@ -689,12 +711,8 @@ fn normalize_last_layer( BinOp(BoolOr, BoolLit(_), BoolLit(_)) => unreachable!(), BinOp(BoolEQ, BoolLit(_), BoolLit(_)) => unreachable!(), BinOp(BoolNE, BoolLit(_), BoolLit(_)) => unreachable!(), - BinOp(NaturalPlus, NaturalLit(x), NaturalLit(y)) => { - Done(NaturalLit(x + y)) - } - BinOp(NaturalTimes, NaturalLit(x), NaturalLit(y)) => { - Done(NaturalLit(x * y)) - } + BinOp(NaturalPlus, NaturalLit(_), NaturalLit(_)) => unreachable!(), + BinOp(NaturalTimes, NaturalLit(_), NaturalLit(_)) => unreachable!(), BinOp(TextAppend, TextLit(x), TextLit(y)) => Done(TextLit(x + y)), BinOp(ListAppend, EmptyListLit(_), _) => unreachable!(), BinOp(ListAppend, _, EmptyListLit(_)) => unreachable!(), @@ -1013,19 +1031,19 @@ mod spec_tests { norm!(success_unit_OperatorOrNormalizeArguments, "unit/OperatorOrNormalizeArguments"); norm!(success_unit_OperatorOrRhsFalse, "unit/OperatorOrRhsFalse"); norm!(success_unit_OperatorOrRhsTrue, "unit/OperatorOrRhsTrue"); - // norm!(success_unit_OperatorPlusLhsZero, "unit/OperatorPlusLhsZero"); - // norm!(success_unit_OperatorPlusNormalizeArguments, "unit/OperatorPlusNormalizeArguments"); + norm!(success_unit_OperatorPlusLhsZero, "unit/OperatorPlusLhsZero"); + norm!(success_unit_OperatorPlusNormalizeArguments, "unit/OperatorPlusNormalizeArguments"); norm!(success_unit_OperatorPlusOneAndOne, "unit/OperatorPlusOneAndOne"); - // norm!(success_unit_OperatorPlusRhsZero, "unit/OperatorPlusRhsZero"); + norm!(success_unit_OperatorPlusRhsZero, "unit/OperatorPlusRhsZero"); // norm!(success_unit_OperatorTextConcatenateLhsEmpty, "unit/OperatorTextConcatenateLhsEmpty"); // norm!(success_unit_OperatorTextConcatenateNormalizeArguments, "unit/OperatorTextConcatenateNormalizeArguments"); // norm!(success_unit_OperatorTextConcatenateRhsEmpty, "unit/OperatorTextConcatenateRhsEmpty"); norm!(success_unit_OperatorTextConcatenateTextText, "unit/OperatorTextConcatenateTextText"); - // norm!(success_unit_OperatorTimesLhsOne, "unit/OperatorTimesLhsOne"); - // norm!(success_unit_OperatorTimesLhsZero, "unit/OperatorTimesLhsZero"); - // norm!(success_unit_OperatorTimesNormalizeArguments, "unit/OperatorTimesNormalizeArguments"); - // norm!(success_unit_OperatorTimesRhsOne, "unit/OperatorTimesRhsOne"); - // norm!(success_unit_OperatorTimesRhsZero, "unit/OperatorTimesRhsZero"); + norm!(success_unit_OperatorTimesLhsOne, "unit/OperatorTimesLhsOne"); + norm!(success_unit_OperatorTimesLhsZero, "unit/OperatorTimesLhsZero"); + norm!(success_unit_OperatorTimesNormalizeArguments, "unit/OperatorTimesNormalizeArguments"); + norm!(success_unit_OperatorTimesRhsOne, "unit/OperatorTimesRhsOne"); + norm!(success_unit_OperatorTimesRhsZero, "unit/OperatorTimesRhsZero"); norm!(success_unit_OperatorTimesTwoAndTwo, "unit/OperatorTimesTwoAndTwo"); norm!(success_unit_Optional, "unit/Optional"); norm!(success_unit_OptionalBuild, "unit/OptionalBuild"); |