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-rw-r--r--dhall/src/semantics/core/context.rs20
1 files changed, 11 insertions, 9 deletions
diff --git a/dhall/src/semantics/core/context.rs b/dhall/src/semantics/core/context.rs
index c198e8e..5a0c320 100644
--- a/dhall/src/semantics/core/context.rs
+++ b/dhall/src/semantics/core/context.rs
@@ -13,29 +13,31 @@ enum CtxItem {
}
#[derive(Debug, Clone)]
-pub(crate) struct TypecheckContext(Vec<(Label, CtxItem)>);
+pub(crate) struct TypecheckContext {
+ ctx: Vec<(Label, CtxItem)>,
+}
impl TypecheckContext {
pub fn new() -> Self {
- TypecheckContext(Vec::new())
+ TypecheckContext { ctx: Vec::new() }
}
fn with_vec(&self, vec: Vec<(Label, CtxItem)>) -> Self {
- TypecheckContext(vec)
+ TypecheckContext { ctx: vec }
}
pub fn insert_type(&self, x: &Label, t: Value) -> Self {
- let mut vec = self.0.clone();
+ let mut vec = self.ctx.clone();
vec.push((x.clone(), CtxItem::Kept(x.into(), t.under_binder(x))));
self.with_vec(vec)
}
pub fn insert_value(&self, x: &Label, e: Value) -> Result<Self, TypeError> {
- let mut vec = self.0.clone();
+ let mut vec = self.ctx.clone();
vec.push((x.clone(), CtxItem::Replaced(e)));
Ok(self.with_vec(vec))
}
pub fn lookup(&self, var: &V<Label>) -> Option<Value> {
let mut var = var.clone();
let mut shift_map: HashMap<Label, _> = HashMap::new();
- for (l, i) in self.0.iter().rev() {
+ for (l, i) in self.ctx.iter().rev() {
match var.over_binder(l) {
None => {
let i = i.under_multiple_binders(&shift_map);
@@ -65,9 +67,9 @@ impl TypecheckContext {
mut f: impl FnMut(&AlphaVar, &CtxItem) -> Result<CtxItem, E>,
) -> Result<Self, E> {
let mut vec = Vec::new();
- vec.reserve(self.0.len());
+ vec.reserve(self.ctx.len());
let mut var = var.clone();
- let mut iter = self.0.iter().rev();
+ let mut iter = self.ctx.iter().rev();
for (l, i) in iter.by_ref() {
vec.push((l.clone(), f(&var, i)?));
if let CtxItem::Kept(_, _) = i {
@@ -89,7 +91,7 @@ impl TypecheckContext {
} else {
Some(
self.with_vec(
- self.0
+ self.ctx
.iter()
.map(|(l, i)| Ok((l.clone(), i.shift(delta, &var)?)))
.collect::<Result<_, _>>()?,