Merge #9257

9257: internal: diagnostic code is mandatory r=matklad a=matklad

bors r+
🤖

Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>

crates/ide/src/diagnostics.rs

@@ -51,28 +51,26 @@ impl DiagnosticCode {
 
 #[derive(Debug)]
 pub struct Diagnostic {
-    // pub name: Option<String>,
+    pub code: DiagnosticCode,
     pub message: String,
     pub range: TextRange,
     pub severity: Severity,
-    pub fixes: Option<Vec<Assist>>,
     pub unused: bool,
-    pub code: Option<DiagnosticCode>,
     pub experimental: bool,
+    pub fixes: Option<Vec<Assist>>,
 }
 
 impl Diagnostic {
     fn new(code: &'static str, message: impl Into<String>, range: TextRange) -> Diagnostic {
         let message = message.into();
-        let code = Some(DiagnosticCode(code));
-        Self {
+        Diagnostic {
+            code: DiagnosticCode(code),
             message,
             range,
             severity: Severity::Error,
-            fixes: None,
             unused: false,
-            code,
             experimental: false,
+            fixes: None,
         }
     }
 
@@ -86,36 +84,14 @@ impl Diagnostic {
         self
     }
 
-    fn error(range: TextRange, message: String) -> Self {
-        Self {
-            message,
-            range,
-            severity: Severity::Error,
-            fixes: None,
-            unused: false,
-            code: None,
-            experimental: false,
-        }
+    fn with_fixes(mut self, fixes: Option<Vec<Assist>>) -> Diagnostic {
+        self.fixes = fixes;
+        self
     }
 
-    fn hint(range: TextRange, message: String) -> Self {
-        Self {
-            message,
-            range,
-            severity: Severity::WeakWarning,
-            fixes: None,
-            unused: false,
-            code: None,
-            experimental: false,
-        }
-    }
-
-    fn with_fixes(self, fixes: Option<Vec<Assist>>) -> Self {
-        Self { fixes, ..self }
-    }
-
-    fn with_unused(self, unused: bool) -> Self {
-        Self { unused, ..self }
+    fn with_unused(mut self, unused: bool) -> Diagnostic {
+        self.unused = unused;
+        self
     }
 }
 
@@ -150,11 +126,9 @@ pub(crate) fn diagnostics(
 
     // [#34344] Only take first 128 errors to prevent slowing down editor/ide, the number 128 is chosen arbitrarily.
     res.extend(
-        parse
-            .errors()
-            .iter()
-            .take(128)
-            .map(|err| Diagnostic::error(err.range(), format!("Syntax Error: {}", err))),
+        parse.errors().iter().take(128).map(|err| {
+            Diagnostic::new("syntax-error", format!("Syntax Error: {}", err), err.range())
+        }),
     );
 
     for node in parse.tree().syntax().descendants() {
@@ -205,15 +179,8 @@ pub(crate) fn diagnostics(
     }
 
     res.retain(|d| {
-        if let Some(code) = d.code {
-            if ctx.config.disabled.contains(code.as_str()) {
-                return false;
-            }
-        }
-        if ctx.config.disable_experimental && d.experimental {
-            return false;
-        }
-        true
+        !ctx.config.disabled.contains(d.code.as_str())
+            && !(ctx.config.disable_experimental && d.experimental)
     });
 
     res
@@ -244,7 +211,12 @@ fn check_unnecessary_braces_in_use_statement(
                 });
 
         acc.push(
-            Diagnostic::hint(use_range, "Unnecessary braces in use statement".to_string())
+            Diagnostic::new(
+                "unnecessary-braces",
+                "Unnecessary braces in use statement".to_string(),
+                use_range,
+            )
+            .severity(Severity::WeakWarning)
             .with_fixes(Some(vec![fix(
                 "remove_braces",
                 "Remove unnecessary braces",

crates/ide/src/diagnostics/field_shorthand.rs

@@ -5,7 +5,7 @@ use ide_db::{base_db::FileId, source_change::SourceChange};
 use syntax::{ast, match_ast, AstNode, SyntaxNode};
 use text_edit::TextEdit;
 
-use crate::{diagnostics::fix, Diagnostic};
+use crate::{diagnostics::fix, Diagnostic, Severity};
 
 pub(super) fn check(acc: &mut Vec<Diagnostic>, file_id: FileId, node: &SyntaxNode) {
     match_ast! {
@@ -46,7 +46,8 @@ fn check_expr_field_shorthand(
 
         let field_range = record_field.syntax().text_range();
         acc.push(
-            Diagnostic::hint(field_range, "Shorthand struct initialization".to_string())
+            Diagnostic::new("use-field-shorthand", "Shorthand struct initialization", field_range)
+                .severity(Severity::WeakWarning)
                 .with_fixes(Some(vec![fix(
                     "use_expr_field_shorthand",
                     "Use struct shorthand initialization",
@@ -85,14 +86,16 @@ fn check_pat_field_shorthand(
         let edit = edit_builder.finish();
 
         let field_range = record_pat_field.syntax().text_range();
-        acc.push(Diagnostic::hint(field_range, "Shorthand struct pattern".to_string()).with_fixes(
-            Some(vec![fix(
+        acc.push(
+            Diagnostic::new("use-field-shorthand", "Shorthand struct pattern", field_range)
+                .severity(Severity::WeakWarning)
+                .with_fixes(Some(vec![fix(
                     "use_pat_field_shorthand",
                     "Use struct field shorthand",
                     SourceChange::from_text_edit(file_id, edit),
                     field_range,
-            )]),
-        ));
+                )])),
+        );
     }
 }
 

crates/ide/src/diagnostics/unresolved_module.rs

@@ -65,9 +65,14 @@ mod baz {}
             expect![[r#"
                 [
                     Diagnostic {
+                        code: DiagnosticCode(
+                            "unresolved-module",
+                        ),
                         message: "unresolved module",
                         range: 0..8,
                         severity: Error,
+                        unused: false,
+                        experimental: false,
                         fixes: Some(
                             [
                                 Assist {
@@ -98,13 +103,6 @@ mod baz {}
                                 },
                             ],
                         ),
-                        unused: false,
-                        code: Some(
-                            DiagnosticCode(
-                                "unresolved-module",
-                            ),
-                        ),
-                        experimental: false,
                     },
                 ]
             "#]],

crates/rust-analyzer/src/handlers.rs

@@ -1229,14 +1229,13 @@ pub(crate) fn publish_diagnostics(
         .map(|d| Diagnostic {
             range: to_proto::range(&line_index, d.range),
             severity: Some(to_proto::diagnostic_severity(d.severity)),
-            code: d.code.map(|d| d.as_str().to_owned()).map(NumberOrString::String),
-            code_description: d.code.and_then(|code| {
-                lsp_types::Url::parse(&format!(
+            code: Some(NumberOrString::String(d.code.as_str().to_string())),
+            code_description: Some(lsp_types::CodeDescription {
+                href: lsp_types::Url::parse(&format!(
                     "https://rust-analyzer.github.io/manual.html#{}",
-                    code.as_str()
+                    d.code.as_str()
                 ))
-                .ok()
-                .map(|href| lsp_types::CodeDescription { href })
+                .unwrap(),
             }),
             source: Some("rust-analyzer".to_string()),
             message: d.message,