Extract types into a separate module

src/types/history.rs

@@ -0,0 +1,29 @@
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+#[cfg(feature = "wasm")]
+use wasm_bindgen::prelude::*;
+
+#[cfg_attr(feature = "wasm", wasm_bindgen)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[cfg(feature = "wasm")]
+pub enum History {
+    Unchanged = "Unchanged",
+    AddedFromLeft = "AddedFromLeft",
+    AddedFromRight = "AddedFromRight",
+    RemovedFromLeft = "RemovedFromLeft",
+    RemovedFromRight = "RemovedFromRight",
+}
+
+/// Simple enum for describing the result of `reconcile` in a flat list.
+/// When compiled to WASM, the enum values are the same as their names.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[cfg(not(feature = "wasm"))]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+pub enum History {
+    Unchanged,
+    AddedFromLeft,
+    AddedFromRight,
+    RemovedFromLeft,
+    RemovedFromRight,
+}

src/types/side.rs

@@ -0,0 +1,22 @@
+use std::fmt::Display;
+
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
+/// Pretty-printable flag to tell which conflicting edit (side)
+/// an operation is associated with.
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Side {
+    Left,
+    Right,
+}
+
+impl Display for Side {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Side::Left => write!(f, "Left"),
+            Side::Right => write!(f, "Right"),
+        }
+    }
+}

src/types/text_with_history.rs

@@ -0,0 +1,26 @@
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+#[cfg(feature = "wasm")]
+use wasm_bindgen::prelude::*;
+
+use crate::types::history::History;
+
+/// Wrapper type to expose `(History, String)` to JS.
+#[cfg_attr(feature = "wasm", wasm_bindgen)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[derive(Debug, Clone, PartialEq)]
+pub struct TextWithHistory {
+    history: History,
+    text: String,
+}
+
+#[cfg_attr(feature = "wasm", wasm_bindgen)]
+impl TextWithHistory {
+    pub fn new(history: History, text: String) -> Self { TextWithHistory { history, text } }
+
+    #[must_use]
+    pub fn history(&self) -> History { self.history }
+
+    #[must_use]
+    pub fn text(&self) -> String { self.text.clone() }
+}