Add SimpleValue type to facilitate deserialization

1 files changed, 29 insertions, 0 deletions

diff --git a/dhall/src/simple.rs b/dhall/src/simple.rs
new file mode 100644
index 0000000..6457291
--- /dev/null
+++ b/dhall/src/simple.rs
@@ -0,0 +1,29 @@
+use std::collections::BTreeMap;
+
+use crate::syntax::LitKind;
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct SimpleValue {
+    kind: Box<SValKind>,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum SValKind {
+    Lit(LitKind),
+    Optional(Option<SimpleValue>),
+    List(Vec<SimpleValue>),
+    Record(BTreeMap<String, SimpleValue>),
+    Union(String, Option<SimpleValue>),
+    Text(String),
+}
+
+impl SimpleValue {
+    pub(crate) fn new(kind: SValKind) -> Self {
+        SimpleValue {
+            kind: Box::new(kind),
+        }
+    }
+    pub fn kind(&self) -> &SValKind {
+        self.kind.as_ref()
+    }
+}