small improvements (#10)

Author: ModProg

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.4.0] - 2023-03-01
+### Changed
+- **Breaking Change**: Made error enums `non_exhaustive`
+- Added `Copy` implementation to `Trait` and `Formattable`
+
 ## [0.3.0] - 2023-03-01
 ### Added
 - `i` gained implicit format `({})` when none is specified `{:i}`
@@ -28,7 +33,8 @@ Fixed URLs in Cargo.toml
 ## [0.1.0] - 2023-02-27
 Initial release
 
-[unreleased]: https://github.com/ModProg/interpolator/compare/v0.3.0...HEAD
+[unreleased]: https://github.com/ModProg/interpolator/compare/v0.4.0...HEAD
+[0.4.0]: https://github.com/ModProg/interpolator/compare/v0.3.0...v0.4.0
 [0.3.0]: https://github.com/ModProg/interpolator/compare/v0.2.0...v0.3.0
 [0.2.0]: https://github.com/ModProg/interpolator/compare/v0.1.2...v0.2.0
 [0.1.2]: https://github.com/ModProg/interpolator/compare/v0.1.1...v0.1.2

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "interpolator"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 categories = ["template-engine", "value-formatting", "text-processing"]
 description = "runtime format strings, fully compatible with std's macros"

src/error.rs

@@ -1,7 +1,8 @@
 use super::*;
 
-#[derive(Debug, PartialEq, Clone)]
 /// Error returned by [`format()`].
+#[derive(Debug, PartialEq, Clone)]
+#[non_exhaustive]
 pub enum Error {
     /// Value was formatted with unimplemented trait.
     /// - `.0` the trait
@@ -66,9 +67,9 @@ impl Display for Error {
 
 impl StdError for Error {}
 
-#[derive(Debug, PartialEq, Clone)]
-#[non_exhaustive]
 /// The trait used to format.
+#[derive(Debug, PartialEq, Eq, Clone, Copy)]
+#[non_exhaustive]
 pub enum Trait {
     /// [`Binary`]
     #[cfg(feature = "number")]
@@ -101,8 +102,9 @@ pub enum Trait {
     Iter,
 }
 
-#[derive(Debug, PartialEq, Clone)]
 /// Error caused by invalid format string
+#[derive(Debug, PartialEq, Clone)]
+#[non_exhaustive]
 pub enum ParseError {
     /// Format spec at byte index is nether closed with a `}`
     FormatSpecUnclosed(usize),

src/formattable.rs

@@ -1,7 +1,7 @@
 use super::*;
 /// Utility struct holding references to the trait implementation of a value to
 /// enable runtime verification and execution of them
-#[derive(Default)]
+#[derive(Default, Clone, Copy)]
 #[must_use]
 pub struct Formattable<'a> {
     #[cfg(any(feature = "debug", feature = "number"))]