From a5ad2cd03ce8ecd101f0c5b57fbf50fa99f98cbe Mon Sep 17 00:00:00 2001
From: Sunli <scott_s829@163.com>
Date: Fri, 12 Aug 2022 12:48:01 +0800
Subject: [PATCH] Update build.rs

---
 CHANGELOG.md    | 4 ++++
 parser/build.rs | 5 ++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a07805ad..ee821ef3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ 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).
 
+# [4.0.8] 2022-08-12
+
+- Add tracing to dataloader methods when the tracing feature is enabled. [#996](https://github.com/async-graphql/async-graphql/pull/996)
+
 # [4.0.7] 2022-08-09
 
 - Limit parser recursion depth to `64`.
diff --git a/parser/build.rs b/parser/build.rs
index e9bdd8a2..1d580660 100644
--- a/parser/build.rs
+++ b/parser/build.rs
@@ -24,6 +24,9 @@ struct GraphQLParser;
     let tokens = pest_generator::derive_parser(input, false);
     let new = tokens.to_string();
     let code = format!("{}\n{}", PREAMBLE, &new);
-    fs::write("./src/parse/generated.rs", code).unwrap();
+    let current_code = fs::read_to_string("./src/parse/generated.rs").unwrap();
+    if current_code != code {
+        fs::write("./src/parse/generated.rs", code).unwrap();
+    }
     Ok(())
 }