s/ExprF/ExprKind/

6 files changed, 61 insertions, 58 deletions

diff --git a/dhall/src/syntax/ast/expr.rs b/dhall/src/syntax/ast/expr.rs
index 5b9f401..7ac342d 100644
--- a/dhall/src/syntax/ast/expr.rs
+++ b/dhall/src/syntax/ast/expr.rs
@@ -1,5 +1,5 @@
 use crate::syntax::map::{DupTreeMap, DupTreeSet};
-use crate::syntax::visitor::{self, ExprFMutVisitor, ExprFVisitor};
+use crate::syntax::visitor::{self, ExprKindMutVisitor, ExprKindVisitor};
 use crate::syntax::*;
 
 pub type Integer = isize;
@@ -144,7 +144,7 @@ pub enum Builtin {
 #[derive(Debug, Clone)]
 pub struct Expr<Embed>(Box<(RawExpr<Embed>, Span)>);
 
-pub type RawExpr<Embed> = ExprF<Expr<Embed>, Embed>;
+pub type RawExpr<Embed> = ExprKind<Expr<Embed>, Embed>;
 
 impl<Embed: PartialEq> std::cmp::PartialEq for Expr<Embed> {
     fn eq(&self, other: &Self) -> bool {
@@ -168,7 +168,7 @@ impl<Embed: std::hash::Hash> std::hash::Hash for Expr<Embed> {
 // much more generic code and improves pattern-matching behind
 // smart pointers.
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
-pub enum ExprF<SubExpr, Embed> {
+pub enum ExprKind<SubExpr, Embed> {
     Const(Const),
     ///  `x`
     ///  `x@n`
@@ -231,12 +231,12 @@ pub enum ExprF<SubExpr, Embed> {
     Embed(Embed),
 }
 
-impl<SE, E> ExprF<SE, E> {
+impl<SE, E> ExprKind<SE, E> {
     pub fn traverse_ref_with_special_handling_of_binders<'a, SE2, Err>(
         &'a self,
         visit_subexpr: impl FnMut(&'a SE) -> Result<SE2, Err>,
         visit_under_binder: impl FnOnce(&'a Label, &'a SE) -> Result<SE2, Err>,
-    ) -> Result<ExprF<SE2, E>, Err>
+    ) -> Result<ExprKind<SE2, E>, Err>
     where
         E: Clone,
     {
@@ -250,7 +250,7 @@ impl<SE, E> ExprF<SE, E> {
     fn traverse_ref<'a, SE2, Err>(
         &'a self,
         visit_subexpr: impl FnMut(&'a SE) -> Result<SE2, Err>,
-    ) -> Result<ExprF<SE2, E>, Err>
+    ) -> Result<ExprKind<SE2, E>, Err>
     where
         E: Clone,
     {
@@ -268,7 +268,7 @@ impl<SE, E> ExprF<SE, E> {
         &'a self,
         mut map_subexpr: impl FnMut(&'a SE) -> SE2,
         mut map_under_binder: impl FnMut(&'a Label, &'a SE) -> SE2,
-    ) -> ExprF<SE2, E>
+    ) -> ExprKind<SE2, E>
     where
         E: Clone,
     {
@@ -281,7 +281,7 @@ impl<SE, E> ExprF<SE, E> {
     pub fn map_ref<'a, SE2>(
         &'a self,
         mut map_subexpr: impl FnMut(&'a SE) -> SE2,
-    ) -> ExprF<SE2, E>
+    ) -> ExprKind<SE2, E>
     where
         E: Clone,
     {
@@ -321,8 +321,8 @@ impl<E> Expr<E> {
         F1: FnMut(Import<Expr<E>>) -> Result<E, Err>,
     {
         match self.as_mut() {
-            ExprF::BinOp(BinOp::ImportAlt, l, r) => {
-                let garbage_expr = ExprF::BoolLit(false);
+            ExprKind::BinOp(BinOp::ImportAlt, l, r) => {
+                let garbage_expr = ExprKind::BoolLit(false);
                 let new_self = if l.traverse_resolve_mut(f).is_ok() {
                     l
                 } else {
@@ -334,7 +334,7 @@ impl<E> Expr<E> {
             }
             _ => {
                 self.as_mut().traverse_mut(|e| e.traverse_resolve_mut(f))?;
-                if let ExprF::Import(import) = self.as_mut() {
+                if let ExprKind::Import(import) = self.as_mut() {
                     let garbage_import = Import {
                         mode: ImportMode::Code,
                         location: ImportLocation::Missing,
@@ -342,7 +342,7 @@ impl<E> Expr<E> {
                     };
                     // Move out of &mut import
                     let import = std::mem::replace(import, garbage_import);
-                    *self.as_mut() = ExprF::Embed(f(import)?);
+                    *self.as_mut() = ExprKind::Embed(f(import)?);
                 }
             }
         }
diff --git a/dhall/src/syntax/ast/visitor.rs b/dhall/src/syntax/ast/visitor.rs
index b76d037..b557995 100644
--- a/dhall/src/syntax/ast/visitor.rs
+++ b/dhall/src/syntax/ast/visitor.rs
@@ -1,7 +1,7 @@
 use crate::syntax::*;
 use std::iter::FromIterator;
 
-/// A visitor trait that can be used to traverse `ExprF`s. We need this pattern so that Rust lets
+/// A visitor trait that can be used to traverse `ExprKind`s. We need this pattern so that Rust lets
 /// us have as much mutability as we can.
 /// For example, `traverse_ref_with_special_handling_of_binders` cannot be made using only
 /// `traverse_ref`, because `traverse_ref` takes a `FnMut` so we would need to pass multiple
@@ -9,7 +9,7 @@ use std::iter::FromIterator;
 /// preventing exactly this ! So we have to be more clever. The visitor pattern allows us to have
 /// only one mutable thing the whole time: the visitor itself. The visitor can then carry around
 /// multiple closures or just one, and Rust is ok with either. See for example TraverseRefVisitor.
-pub trait ExprFVisitor<'a, SE1, SE2, E1, E2>: Sized {
+pub trait ExprKindVisitor<'a, SE1, SE2, E1, E2>: Sized {
     type Error;
 
     fn visit_subexpr(&mut self, subexpr: &'a SE1) -> Result<SE2, Self::Error>;
@@ -25,14 +25,14 @@ pub trait ExprFVisitor<'a, SE1, SE2, E1, E2>: Sized {
 
     fn visit(
         self,
-        input: &'a ExprF<SE1, E1>,
-    ) -> Result<ExprF<SE2, E2>, Self::Error> {
+        input: &'a ExprKind<SE1, E1>,
+    ) -> Result<ExprKind<SE2, E2>, Self::Error> {
         visit_ref(self, input)
     }
 }
 
-/// Like `ExprFVisitor`, but by mutable reference
-pub trait ExprFMutVisitor<'a, SE, E>: Sized {
+/// Like `ExprKindVisitor`, but by mutable reference
+pub trait ExprKindMutVisitor<'a, SE, E>: Sized {
     type Error;
 
     fn visit_subexpr(&mut self, subexpr: &'a mut SE)
@@ -49,17 +49,17 @@ pub trait ExprFMutVisitor<'a, SE, E>: Sized {
         self.visit_subexpr(subexpr)
     }
 
-    fn visit(self, input: &'a mut ExprF<SE, E>) -> Result<(), Self::Error> {
+    fn visit(self, input: &'a mut ExprKind<SE, E>) -> Result<(), Self::Error> {
         visit_mut(self, input)
     }
 }
 
 fn visit_ref<'a, V, SE1, SE2, E1, E2>(
     mut v: V,
-    input: &'a ExprF<SE1, E1>,
-) -> Result<ExprF<SE2, E2>, V::Error>
+    input: &'a ExprKind<SE1, E1>,
+) -> Result<ExprKind<SE2, E2>, V::Error>
 where
-    V: ExprFVisitor<'a, SE1, SE2, E1, E2>,
+    V: ExprKindVisitor<'a, SE1, SE2, E1, E2>,
 {
     fn vec<'a, T, U, Err, F: FnMut(&'a T) -> Result<U, Err>>(
         x: &'a [T],
@@ -83,7 +83,7 @@ where
     where
         SE1: 'a,
         T: FromIterator<(Label, SE2)>,
-        V: ExprFVisitor<'a, SE1, SE2, E1, E2>,
+        V: ExprKindVisitor<'a, SE1, SE2, E1, E2>,
     {
         x.into_iter()
             .map(|(k, x)| Ok((k.clone(), v.visit_subexpr(x)?)))
@@ -96,7 +96,7 @@ where
     where
         SE1: 'a,
         T: FromIterator<(Label, Option<SE2>)>,
-        V: ExprFVisitor<'a, SE1, SE2, E1, E2>,
+        V: ExprKindVisitor<'a, SE1, SE2, E1, E2>,
     {
         x.into_iter()
             .map(|(k, x)| {
@@ -111,7 +111,7 @@ where
             .collect()
     }
 
-    use crate::syntax::ExprF::*;
+    use crate::syntax::ExprKind::*;
     Ok(match input {
         Var(v) => Var(v.clone()),
         Lam(l, t, e) => {
@@ -172,14 +172,14 @@ where
 
 fn visit_mut<'a, V, SE, E>(
     mut v: V,
-    input: &'a mut ExprF<SE, E>,
+    input: &'a mut ExprKind<SE, E>,
 ) -> Result<(), V::Error>
 where
-    V: ExprFMutVisitor<'a, SE, E>,
+    V: ExprKindMutVisitor<'a, SE, E>,
 {
     fn vec<'a, V, SE, E>(v: &mut V, x: &'a mut Vec<SE>) -> Result<(), V::Error>
     where
-        V: ExprFMutVisitor<'a, SE, E>,
+        V: ExprKindMutVisitor<'a, SE, E>,
     {
         for x in x {
             v.visit_subexpr(x)?;
@@ -191,7 +191,7 @@ where
         x: &'a mut Option<SE>,
     ) -> Result<(), V::Error>
     where
-        V: ExprFMutVisitor<'a, SE, E>,
+        V: ExprKindMutVisitor<'a, SE, E>,
     {
         if let Some(x) = x {
             v.visit_subexpr(x)?;
@@ -204,7 +204,7 @@ where
     ) -> Result<(), V::Error>
     where
         SE: 'a,
-        V: ExprFMutVisitor<'a, SE, E>,
+        V: ExprKindMutVisitor<'a, SE, E>,
     {
         for (_, x) in x {
             v.visit_subexpr(x)?;
@@ -217,7 +217,7 @@ where
     ) -> Result<(), V::Error>
     where
         SE: 'a,
-        V: ExprFMutVisitor<'a, SE, E>,
+        V: ExprKindMutVisitor<'a, SE, E>,
     {
         for (_, x) in x {
             opt(&mut v, x)?;
@@ -225,7 +225,7 @@ where
         Ok(())
     }
 
-    use crate::syntax::ExprF::*;
+    use crate::syntax::ExprKind::*;
     match input {
         Var(_) | Const(_) | Builtin(_) | BoolLit(_) | NaturalLit(_)
         | IntegerLit(_) | DoubleLit(_) => {}
@@ -293,7 +293,7 @@ pub struct TraverseRefWithBindersVisitor<F1, F2> {
     pub visit_under_binder: F2,
 }
 
-impl<'a, SE, E, SE2, Err, F1, F2> ExprFVisitor<'a, SE, SE2, E, E>
+impl<'a, SE, E, SE2, Err, F1, F2> ExprKindVisitor<'a, SE, SE2, E, E>
     for TraverseRefWithBindersVisitor<F1, F2>
 where
     SE: 'a,
@@ -322,7 +322,7 @@ pub struct TraverseRefVisitor<F1> {
     pub visit_subexpr: F1,
 }
 
-impl<'a, SE, E, SE2, Err, F1> ExprFVisitor<'a, SE, SE2, E, E>
+impl<'a, SE, E, SE2, Err, F1> ExprKindVisitor<'a, SE, SE2, E, E>
     for TraverseRefVisitor<F1>
 where
     SE: 'a,
@@ -343,7 +343,8 @@ pub struct TraverseMutVisitor<F1> {
     pub visit_subexpr: F1,
 }
 
-impl<'a, SE, E, Err, F1> ExprFMutVisitor<'a, SE, E> for TraverseMutVisitor<F1>
+impl<'a, SE, E, Err, F1> ExprKindMutVisitor<'a, SE, E>
+    for TraverseMutVisitor<F1>
 where
     SE: 'a,
     E: 'a,
diff --git a/dhall/src/syntax/binary/decode.rs b/dhall/src/syntax/binary/decode.rs
index f452666..8b73e46 100644
--- a/dhall/src/syntax/binary/decode.rs
+++ b/dhall/src/syntax/binary/decode.rs
@@ -6,7 +6,7 @@ use crate::error::DecodeError;
 use crate::semantics::phase::DecodedExpr;
 use crate::syntax;
 use crate::syntax::{
-    Expr, ExprF, FilePath, FilePrefix, Hash, ImportLocation, ImportMode,
+    Expr, ExprKind, FilePath, FilePrefix, Hash, ImportLocation, ImportMode,
     Integer, InterpolatedText, Label, Natural, RawExpr, Scheme, Span, URL, V,
 };
 
@@ -25,10 +25,10 @@ fn rc<E>(x: RawExpr<E>) -> Expr<E> {
 fn cbor_value_to_dhall(data: &cbor::Value) -> Result<DecodedExpr, DecodeError> {
     use cbor::Value::*;
     use syntax::{BinOp, Builtin, Const};
-    use ExprF::*;
+    use ExprKind::*;
     Ok(rc(match data {
         String(s) => match Builtin::parse(s) {
-            Some(b) => ExprF::Builtin(b),
+            Some(b) => ExprKind::Builtin(b),
             None => match s.as_str() {
                 "True" => BoolLit(true),
                 "False" => BoolLit(false),
@@ -123,7 +123,7 @@ fn cbor_value_to_dhall(data: &cbor::Value) -> Result<DecodedExpr, DecodeError> {
             }
             [U64(4), t] => {
                 let t = cbor_value_to_dhall(&t)?;
-                EmptyListLit(rc(App(rc(ExprF::Builtin(Builtin::List)), t)))
+                EmptyListLit(rc(App(rc(ExprKind::Builtin(Builtin::List)), t)))
             }
             [U64(4), Null, rest @ ..] => {
                 let rest = rest
@@ -139,14 +139,14 @@ fn cbor_value_to_dhall(data: &cbor::Value) -> Result<DecodedExpr, DecodeError> {
             // Old-style optional literals
             [U64(5), t] => {
                 let t = cbor_value_to_dhall(&t)?;
-                App(rc(ExprF::Builtin(Builtin::OptionalNone)), t)
+                App(rc(ExprKind::Builtin(Builtin::OptionalNone)), t)
             }
             [U64(5), t, x] => {
                 let x = cbor_value_to_dhall(&x)?;
                 let t = cbor_value_to_dhall(&t)?;
                 Annot(
                     rc(SomeLit(x)),
-                    rc(App(rc(ExprF::Builtin(Builtin::Optional)), t)),
+                    rc(App(rc(ExprKind::Builtin(Builtin::Optional)), t)),
                 )
             }
             [U64(6), x, y] => {
diff --git a/dhall/src/syntax/binary/encode.rs b/dhall/src/syntax/binary/encode.rs
index c1e7c4c..25a545c 100644
--- a/dhall/src/syntax/binary/encode.rs
+++ b/dhall/src/syntax/binary/encode.rs
@@ -5,8 +5,8 @@ use crate::error::EncodeError;
 use crate::syntax;
 use crate::syntax::map::DupTreeMap;
 use crate::syntax::{
-    Expr, ExprF, FilePrefix, Hash, Import, ImportLocation, ImportMode, Label,
-    Scheme, V,
+    Expr, ExprKind, FilePrefix, Hash, Import, ImportLocation, ImportMode,
+    Label, Scheme, V,
 };
 
 /// Warning: will fail if `expr` contains an `Embed` node.
@@ -46,7 +46,7 @@ where
     use cbor::Value::{String, I64, U64};
     use std::iter::once;
     use syntax::Builtin;
-    use syntax::ExprF::*;
+    use syntax::ExprKind::*;
 
     use self::Serialize::{RecordMap, UnionMap};
     fn expr<E>(x: &Expr<E>) -> self::Serialize<'_, E> {
@@ -110,7 +110,9 @@ where
         SomeLit(x) => ser_seq!(ser; tag(5), null(), expr(x)),
         EmptyListLit(x) => match x.as_ref() {
             App(f, a) => match f.as_ref() {
-                ExprF::Builtin(Builtin::List) => ser_seq!(ser; tag(4), expr(a)),
+                ExprKind::Builtin(Builtin::List) => {
+                    ser_seq!(ser; tag(4), expr(a))
+                }
                 _ => ser_seq!(ser; tag(28), expr(x)),
             },
             _ => ser_seq!(ser; tag(28), expr(x)),
@@ -284,7 +286,7 @@ fn collect_nested_applications<'a, E>(
 ) -> (&'a Expr<E>, Vec<&'a Expr<E>>) {
     fn go<'a, E>(e: &'a Expr<E>, vec: &mut Vec<&'a Expr<E>>) -> &'a Expr<E> {
         match e.as_ref() {
-            ExprF::App(f, a) => {
+            ExprKind::App(f, a) => {
                 vec.push(a);
                 go(f, vec)
             }
@@ -306,7 +308,7 @@ fn collect_nested_lets<'a, E>(
         vec: &mut Vec<LetBinding<'a, E>>,
     ) -> &'a Expr<E> {
         match e.as_ref() {
-            ExprF::Let(l, t, v, e) => {
+            ExprKind::Let(l, t, v, e) => {
                 vec.push((l, t, v));
                 go(e, vec)
             }
diff --git a/dhall/src/syntax/text/parser.rs b/dhall/src/syntax/text/parser.rs
index 617348b..e1bb469 100644
--- a/dhall/src/syntax/text/parser.rs
+++ b/dhall/src/syntax/text/parser.rs
@@ -8,7 +8,7 @@ use pest_consume::{match_nodes, Parser};
 use crate::semantics::phase::Normalized;
 use crate::syntax;
 use crate::syntax::map::{DupTreeMap, DupTreeSet};
-use crate::syntax::ExprF::*;
+use crate::syntax::ExprKind::*;
 use crate::syntax::{
     Double, FilePath, FilePrefix, Hash, ImportLocation, ImportMode, Integer,
     InterpolatedText, InterpolatedTextContents, Label, NaiveDouble, Natural,
diff --git a/dhall/src/syntax/text/printer.rs b/dhall/src/syntax/text/printer.rs
index 7ccc708..75703d2 100644
--- a/dhall/src/syntax/text/printer.rs
+++ b/dhall/src/syntax/text/printer.rs
@@ -3,9 +3,9 @@ use itertools::Itertools;
 use std::fmt::{self, Display};
 
 /// Generic instance that delegates to subexpressions
-impl<SE: Display + Clone, E: Display> Display for ExprF<SE, E> {
+impl<SE: Display + Clone, E: Display> Display for ExprKind<SE, E> {
     fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-        use crate::syntax::ExprF::*;
+        use crate::syntax::ExprKind::*;
         match self {
             Lam(a, b, c) => {
                 write!(f, "λ({} : {}) → {}", a, b, c)?;
@@ -53,10 +53,10 @@ impl<SE: Display + Clone, E: Display> Display for ExprF<SE, E> {
             Assert(a) => {
                 write!(f, "assert : {}", a)?;
             }
-            ExprF::BinOp(op, a, b) => {
+            ExprKind::BinOp(op, a, b) => {
                 write!(f, "{} {} {}", a, op, b)?;
             }
-            ExprF::App(a, b) => {
+            ExprKind::App(a, b) => {
                 write!(f, "{} {}", a, b)?;
             }
             Field(a, b) => {
@@ -141,7 +141,7 @@ impl<A: Display + Clone> RawExpr<A> {
         f: &mut fmt::Formatter,
         phase: PrintPhase,
     ) -> Result<(), fmt::Error> {
-        use crate::syntax::ExprF::*;
+        use crate::syntax::ExprKind::*;
         use PrintPhase::*;
 
         let needs_paren = match self {
@@ -160,8 +160,8 @@ impl<A: Display + Clone> RawExpr<A> {
                 true
             }
             // Precedence is magically handled by the ordering of BinOps.
-            ExprF::BinOp(op, _, _) if phase > PrintPhase::BinOp(*op) => true,
-            ExprF::App(_, _) if phase > PrintPhase::App => true,
+            ExprKind::BinOp(op, _, _) if phase > PrintPhase::BinOp(*op) => true,
+            ExprKind::App(_, _) if phase > PrintPhase::App => true,
             Field(_, _) | Projection(_, _) | ProjectionByExpr(_, _)
                 if phase > PrintPhase::Import =>
             {
@@ -189,13 +189,13 @@ impl<A: Display + Clone> RawExpr<A> {
                 b.map(|x| x.phase(PrintPhase::App)),
             ),
             Annot(a, b) => Annot(a.phase(Operator), b),
-            ExprF::BinOp(op, a, b) => ExprF::BinOp(
+            ExprKind::BinOp(op, a, b) => ExprKind::BinOp(
                 op,
                 a.phase(PrintPhase::BinOp(op)),
                 b.phase(PrintPhase::BinOp(op)),
             ),
             SomeLit(e) => SomeLit(e.phase(PrintPhase::Import)),
-            ExprF::App(f, a) => ExprF::App(
+            ExprKind::App(f, a) => ExprKind::App(
                 f.phase(PrintPhase::Import),
                 a.phase(PrintPhase::Import),
             ),
@@ -209,7 +209,7 @@ impl<A: Display + Clone> RawExpr<A> {
             f.write_str("(")?;
         }
 
-        // Uses the ExprF<PhasedExpr<_>, _> instance
+        // Uses the ExprKind<PhasedExpr<_>, _> instance
         phased_self.fmt(f)?;
 
         if needs_paren {