refactor: update to rust 2024 (#736)

* refactor: update to rust 2024

* chore: format code with rust 2024

Author: sunng87

Cargo.toml

@@ -10,7 +10,7 @@ homepage = "https://github.com/sunng87/handlebars-rust"
 repository = "https://github.com/sunng87/handlebars-rust"
 documentation = "https://docs.rs/crate/handlebars/"
 readme = "README.md"
-edition = "2021"
+edition = "2024"
 rust-version = "1.85"
 
 [lib]

benches/bench.rs

@@ -4,20 +4,20 @@ extern crate criterion;
 extern crate serde_derive;
 
 use criterion::Criterion;
-use handlebars::{to_json, Context, Handlebars, Template};
+use handlebars::{Context, Handlebars, Template, to_json};
 use serde_json::json;
 use serde_json::value::Value as Json;
 use std::collections::BTreeMap;
 
 #[cfg(unix)]
 use criterion::profiler::Profiler;
 #[cfg(unix)]
-use pprof::protos::Message;
-#[cfg(unix)]
 use pprof::ProfilerGuard;
+#[cfg(unix)]
+use pprof::protos::Message;
 
 #[cfg(unix)]
-use std::fs::{create_dir_all, File};
+use std::fs::{File, create_dir_all};
 #[cfg(unix)]
 use std::io::Write;
 #[cfg(unix)]

examples/block_helper_macro_let.rs

@@ -2,7 +2,7 @@ use handlebars::{
     BlockParamHolder, Context, Handlebars, Helper, Output, RenderContext, RenderError,
     RenderErrorReason,
 };
-use serde_json::{json, Value};
+use serde_json::{Value, json};
 
 // a custom block helper to bind a variable name to a value
 pub fn helper_let<'reg, 'rc>(

examples/decorator.rs

@@ -8,8 +8,8 @@ use std::error::Error;
 use serde_json::value::{Map, Value as Json};
 
 use handlebars::{
-    to_json, Context, Decorator, Handlebars, Helper, JsonRender, Output, RenderContext,
-    RenderError, RenderErrorReason,
+    Context, Decorator, Handlebars, Helper, JsonRender, Output, RenderContext, RenderError,
+    RenderErrorReason, to_json,
 };
 
 // default format helper

examples/dev_mode.rs

@@ -20,7 +20,9 @@ fn main() {
     let hbs = Arc::new(handlebars());
 
     let server = Server::http("127.0.0.1:3030").expect("Failed to start demo server.");
-    println!("Edit ./examples/dev_mode/template.hbs and request http://localhost:3030 to see the change on the fly.");
+    println!(
+        "Edit ./examples/dev_mode/template.hbs and request http://localhost:3030 to see the change on the fly."
+    );
 
     for req in server.incoming_requests() {
         let result = hbs

examples/helper_macro.rs

@@ -1,9 +1,9 @@
 use std::error::Error;
 
-use handlebars::{handlebars_helper, Handlebars, JsonRender};
-use serde_json::{json, Value};
-use time::format_description::parse;
+use handlebars::{Handlebars, JsonRender, handlebars_helper};
+use serde_json::{Value, json};
 use time::OffsetDateTime;
+use time::format_description::parse;
 
 // define a helper using helper
 // a date format helper accept an `OffsetDateTime` as parameter

examples/render.rs

@@ -9,8 +9,8 @@ use serde_json::value::{Map, Value as Json};
 use std::error::Error;
 
 use handlebars::{
-    to_json, Context, Handlebars, Helper, JsonRender, Output, RenderContext, RenderError,
-    RenderErrorReason,
+    Context, Handlebars, Helper, JsonRender, Output, RenderContext, RenderError, RenderErrorReason,
+    to_json,
 };
 
 // define a custom helper

examples/render_file.rs

@@ -13,8 +13,8 @@ use std::fs::File;
 use std::io::{Read, Write};
 
 use handlebars::{
-    to_json, Context, Handlebars, Helper, JsonRender, Output, RenderContext, RenderError,
-    RenderErrorReason,
+    Context, Handlebars, Helper, JsonRender, Output, RenderContext, RenderError, RenderErrorReason,
+    to_json,
 };
 
 // define a custom helper

rustfmt.toml

@@ -1 +1 @@
-format_strings = false
+

src/block.rs

@@ -2,9 +2,9 @@ use std::collections::BTreeMap;
 
 use serde_json::value::Value as Json;
 
+use crate::Template;
 use crate::error::RenderError;
 use crate::local_vars::LocalVars;
-use crate::Template;
 
 #[derive(Clone, Debug)]
 pub enum BlockParamHolder {