Add serde

Cargo.toml

@@ -41,6 +41,7 @@ const_format = "0.2.22"
 owo-colors = "3.2.0"
 rpds = "0.10.0"
 wu-diff = "0.1.2"
+serde = { version = "1.0", features = ["derive"] }
 
 [dev-dependencies]
 pretty_assertions = "1.0.0"

src/lines.rs

@@ -1,6 +1,7 @@
 //! Manipulate lines of text and groups of lines.
 
 use crate::positions::SingleLineSpan;
+use serde::{Deserialize, Serialize};
 use std::{
     cmp::{max, Ordering},
     fmt,
@@ -10,7 +11,7 @@ use std::{
 /// other numerical data.
 ///
 /// Zero-indexed internally.
-#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[derive(Serialize, Deserialize, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct LineNumber(pub usize);
 
 impl LineNumber {

src/positions.rs

@@ -1,9 +1,10 @@
 //! Represents positions within a string.
 
 use crate::lines::LineNumber;
+use serde::{Deserialize, Serialize};
 
 /// A range within a single line of a string.
-#[derive(Debug, PartialEq, Clone, Copy, Eq, PartialOrd, Ord, Hash)]
+#[derive(Serialize, Deserialize, Debug, PartialEq, Clone, Copy, Eq, PartialOrd, Ord, Hash)]
 pub struct SingleLineSpan {
     /// All zero-indexed.
     pub line: LineNumber,

src/summary.rs

@@ -1,12 +1,13 @@
 use crate::syntax::MatchedPos;
+use serde::{Deserialize, Serialize};
 
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Deserialize, Serialize, Debug, PartialEq, Eq)]
 pub enum FileContent {
     Text(String),
     Binary(Vec<u8>),
 }
 
-#[derive(Debug)]
+#[derive(Serialize, Deserialize, Debug)]
 pub struct DiffResult {
     pub path: String,
     pub language: Option<String>,

src/syntax.rs

@@ -2,6 +2,7 @@
 
 #![allow(clippy::mutable_key_type)] // Hash for Syntax doesn't use mutable fields.
 
+use serde::{Deserialize, Serialize};
 use std::{
     cell::Cell,
     collections::HashMap,
@@ -552,7 +553,7 @@ impl<'a> Hash for Syntax<'a> {
     }
 }
 
-#[derive(PartialEq, Eq, Debug, Clone, Copy, Hash)]
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone, Copy, Hash)]
 pub enum AtomKind {
     Normal,
     String,
@@ -562,14 +563,14 @@ pub enum AtomKind {
 }
 
 /// Unlike atoms, tokens can be delimiters like `{`.
-#[derive(PartialEq, Eq, Debug, Clone, Copy)]
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone, Copy)]
 pub enum TokenKind {
     Delimiter,
     Atom(AtomKind),
 }
 
 /// A matched token (an atom, a delimiter, or a comment word).
-#[derive(PartialEq, Eq, Debug, Clone)]
+#[derive(Serialize, Deserialize, PartialEq, Eq, Debug, Clone)]
 pub enum MatchKind {
     UnchangedToken {
         highlight: TokenKind,
@@ -598,7 +599,7 @@ impl MatchKind {
     }
 }
 
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Deserialize, Serialize, Debug, Clone, PartialEq, Eq)]
 pub struct MatchedPos {
     pub kind: MatchKind,
     pub pos: SingleLineSpan,