remove serde from deps

Signed-off-by: Benjamin Coenen <[email protected]>

Author: bnjjj

Cargo.lock

@@ -19,6 +19,4 @@ ungrammar = "1.1.3"
 walkdir = "2.3.1"
 write-json =  "0.1.0"
 fs-err = "2.3"
-serde = { version = "1.0", features = ["derive"] }
-serde_json = "1.0"
 # Avoid adding more dependencies to this crate

crates/ide/src/completion/generated_lint_completions.rs

@@ -2,11 +2,12 @@
 use std::{
     collections::HashMap,
     fs::File,
+    io::BufReader,
+    io::Read,
     path::{Path, PathBuf},
 };
 
 use quote::quote;
-use serde::Deserialize;
 use walkdir::WalkDir;
 
 use crate::{
@@ -65,18 +66,43 @@ fn generate_descriptor(src_dir: PathBuf) -> Result<proc_macro2::TokenStream> {
     Ok(ts)
 }
 
-#[derive(Deserialize)]
+#[derive(Default)]
 struct ClippyLint {
-    docs: HashMap<String, String>,
+    help: String,
     id: String,
 }
 
 fn generate_descriptor_clippy(uri: &str) -> Result<proc_macro2::TokenStream> {
-    let file = File::open(uri)?;
-    let clippy_lints: Vec<ClippyLint> = serde_json::from_reader(file)?;
-    let definitions = clippy_lints.into_iter().map(|mut clippy_lint| {
+    let mut file = File::open(uri)?;
+    let mut file_content = String::new();
+    file.read_to_string(&mut file_content)?;
+    let mut clippy_lints: Vec<ClippyLint> = vec![];
+
+    for line in file_content.lines().map(|line| line.trim()) {
+        if line.starts_with(r#""id":"#) {
+            let clippy_lint = ClippyLint {
+                id: line
+                    .strip_prefix(r#""id": ""#)
+                    .expect("should be prefixed by id")
+                    .strip_suffix(r#"","#)
+                    .expect("should be suffixed by comma")
+                    .into(),
+                help: String::new(),
+            };
+            clippy_lints.push(clippy_lint)
+        } else if line.starts_with(r#""What it does":"#) {
+            clippy_lints.last_mut().expect("clippy lint must already exist").help = line
+                .strip_prefix(r#""What it does": ""#)
+                .expect("should be prefixed by what it does")
+                .strip_suffix(r#"","#)
+                .expect("should be suffixed by comma")
+                .into();
+        }
+    }
+
+    let definitions = clippy_lints.into_iter().map(|clippy_lint| {
         let lint_ident = format!("clippy::{}", clippy_lint.id);
-        let doc = clippy_lint.docs.remove("What it does").unwrap_or_default();
+        let doc = clippy_lint.help;
 
         quote! { LintCompletion { label: #lint_ident, description: #doc } }
     });