Start parsing imports

4 files changed, 14 insertions, 5 deletions

diff --git a/dhall/src/imports.rs b/dhall/src/imports.rs
new file mode 100644
index 0000000..32ddfd7
--- /dev/null
+++ b/dhall/src/imports.rs
@@ -0,0 +1,11 @@
+use dhall_core::{Expr, Import, ImportLocation, ImportMode, FilePrefix, X};
+
+
+// fn resolve_import(import: Import) -> Expr<X, Import> {
+
+// }
+
+pub fn resolve_imports<'i, S: Clone>(expr: &Expr<'i, S, Import>) -> Expr<'i, S, X> {
+    let no_import = |_: &Import| -> X { panic!("ahhh import") };
+    expr.map_embed(&no_import)
+}
diff --git a/dhall/src/lib.rs b/dhall/src/lib.rs
index 58b29a3..54f0983 100644
--- a/dhall/src/lib.rs
+++ b/dhall/src/lib.rs
@@ -5,4 +5,4 @@
 mod normalize;
 pub use crate::normalize::*;
 pub mod typecheck;
-
+pub mod imports;
diff --git a/dhall/src/main.rs b/dhall/src/main.rs
index 3e8aca4..43d03ce 100644
--- a/dhall/src/main.rs
+++ b/dhall/src/main.rs
@@ -91,9 +91,7 @@ fn main() {
         }
     };
 
-    /*
-    expr' <- load expr
-    */
+    let expr = imports::resolve_imports(&expr);
 
     let type_expr = match typecheck::type_of(&expr) {
         Err(e) => {
diff --git a/dhall/src/normalize.rs b/dhall/src/normalize.rs
index ec594da..b46722a 100644
--- a/dhall/src/normalize.rs
+++ b/dhall/src/normalize.rs
@@ -145,7 +145,7 @@ where
         },
 
         // Normalize everything else before matching
-        e => match e.map_shallow(normalize, |_| unreachable!()) {
+        e => match e.map_shallow(normalize, |_| unreachable!(), |x| x.clone()) {
             BinOp(BoolAnd, box BoolLit(x), box BoolLit(y)) => BoolLit(x && y),
             BinOp(BoolOr, box BoolLit(x), box BoolLit(y)) => BoolLit(x || y),
             BinOp(BoolEQ, box BoolLit(x), box BoolLit(y)) => BoolLit(x == y),