diff options
| author | Nadrieril | 2019-11-11 17:20:48 +0000 |
|---|---|---|
| committer | Nadrieril | 2019-11-11 17:20:48 +0000 |
| commit | facd2c587d96510c5a808f19d37b40c1fc2d2618 (patch) | |
| tree | 4c64231fd014215b962cb294d4672d6785326372 /dhall_syntax/src/core | |
| parent | 84cd6f386d6f4c7952fbc1da87dcd754f26ee404 (diff) | |
Parse projection by expression
Diffstat (limited to 'dhall_syntax/src/core')
| -rw-r--r-- | dhall_syntax/src/core/expr.rs | 2 | ||||
| -rw-r--r-- | dhall_syntax/src/core/visitor.rs | 5 |
2 files changed, 7 insertions, 0 deletions
diff --git a/dhall_syntax/src/core/expr.rs b/dhall_syntax/src/core/expr.rs index 750b58b..131f97e 100644 --- a/dhall_syntax/src/core/expr.rs +++ b/dhall_syntax/src/core/expr.rs @@ -223,6 +223,8 @@ pub enum ExprF<SubExpr, Embed> { Field(SubExpr, Label), /// `e.{ x, y, z }` Projection(SubExpr, DupTreeSet<Label>), + /// `e.(t)` + ProjectionByExpr(SubExpr, SubExpr), /// `./some/path` Import(Import<SubExpr>), /// Embeds the result of resolving an import diff --git a/dhall_syntax/src/core/visitor.rs b/dhall_syntax/src/core/visitor.rs index 39a027f..6189f26 100644 --- a/dhall_syntax/src/core/visitor.rs +++ b/dhall_syntax/src/core/visitor.rs @@ -161,6 +161,7 @@ where } Field(e, l) => Field(v.visit_subexpr(e)?, l.clone()), Projection(e, ls) => Projection(v.visit_subexpr(e)?, ls.clone()), + ProjectionByExpr(e, x) => ProjectionByExpr(v.visit_subexpr(e)?, v.visit_subexpr(x)?), Assert(e) => Assert(v.visit_subexpr(e)?), Import(i) => Import(i.traverse_ref(|e| v.visit_subexpr(e))?), Embed(a) => Embed(v.visit_embed(a)?), @@ -274,6 +275,10 @@ where } Field(e, _) => v.visit_subexpr(e)?, Projection(e, _) => v.visit_subexpr(e)?, + ProjectionByExpr(e, x) => { + v.visit_subexpr(e)?; + v.visit_subexpr(x)?; + } Assert(e) => v.visit_subexpr(e)?, Import(i) => i.traverse_mut(|e| v.visit_subexpr(e))?, Embed(a) => v.visit_embed(a)?, |