Merge pull request #18418 from ChayimFriedman2/explicitly-disable

feat: Split `macro-error` diagnostic so users can ignore only parts of it

5 files changed, 77 insertions, 34 deletions

diff --git a/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/mod.rs b/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/mod.rs
index 450a15bd66e..d5b94f0ae44 100644
--- a/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/mod.rs
+++ b/src/tools/rust-analyzer/crates/hir-def/src/macro_expansion_tests/mod.rs
@@ -122,7 +122,7 @@ pub fn identity_when_valid(_attr: TokenStream, item: TokenStream) -> TokenStream
 
         let mut expn_text = String::new();
         if let Some(err) = exp.err {
-            format_to!(expn_text, "/* error: {} */", err.render_to_string(&db).0);
+            format_to!(expn_text, "/* error: {} */", err.render_to_string(&db).message);
         }
         let (parse, token_map) = exp.value;
         if expect_errors {
diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/lib.rs b/src/tools/rust-analyzer/crates/hir-expand/src/lib.rs
index 5d5f72490d0..7d2f556406d 100644
--- a/src/tools/rust-analyzer/crates/hir-expand/src/lib.rs
+++ b/src/tools/rust-analyzer/crates/hir-expand/src/lib.rs
@@ -165,40 +165,73 @@ pub enum ExpandErrorKind {
 }
 
 impl ExpandError {
-    pub fn render_to_string(&self, db: &dyn ExpandDatabase) -> (String, bool) {
+    pub fn render_to_string(&self, db: &dyn ExpandDatabase) -> RenderedExpandError {
         self.inner.0.render_to_string(db)
     }
 }
 
+pub struct RenderedExpandError {
+    pub message: String,
+    pub error: bool,
+    pub kind: &'static str,
+}
+
+impl RenderedExpandError {
+    const GENERAL_KIND: &str = "macro-error";
+}
+
 impl ExpandErrorKind {
-    pub fn render_to_string(&self, db: &dyn ExpandDatabase) -> (String, bool) {
+    pub fn render_to_string(&self, db: &dyn ExpandDatabase) -> RenderedExpandError {
         match self {
-            ExpandErrorKind::ProcMacroAttrExpansionDisabled => {
-                ("procedural attribute macro expansion is disabled".to_owned(), false)
-            }
-            ExpandErrorKind::MacroDisabled => {
-                ("proc-macro is explicitly disabled".to_owned(), false)
-            }
+            ExpandErrorKind::ProcMacroAttrExpansionDisabled => RenderedExpandError {
+                message: "procedural attribute macro expansion is disabled".to_owned(),
+                error: false,
+                kind: "proc-macros-disabled",
+            },
+            ExpandErrorKind::MacroDisabled => RenderedExpandError {
+                message: "proc-macro is explicitly disabled".to_owned(),
+                error: false,
+                kind: "proc-macro-disabled",
+            },
             &ExpandErrorKind::MissingProcMacroExpander(def_crate) => {
                 match db.proc_macros().get_error_for_crate(def_crate) {
-                    Some((e, hard_err)) => (e.to_owned(), hard_err),
-                    None => (
-                        format!(
-                            "internal error: proc-macro map is missing error entry for crate {def_crate:?}"
-                        ),
-                        true,
-                    ),
+                    Some((e, hard_err)) => RenderedExpandError {
+                        message: e.to_owned(),
+                        error: hard_err,
+                        kind: RenderedExpandError::GENERAL_KIND,
+                    },
+                    None => RenderedExpandError {
+                        message: format!("internal error: proc-macro map is missing error entry for crate {def_crate:?}"),
+                        error: true,
+                        kind: RenderedExpandError::GENERAL_KIND,
+                    },
                 }
             }
-            ExpandErrorKind::MacroDefinition => {
-                ("macro definition has parse errors".to_owned(), true)
-            }
-            ExpandErrorKind::Mbe(e) => (e.to_string(), true),
-            ExpandErrorKind::RecursionOverflow => {
-                ("overflow expanding the original macro".to_owned(), true)
-            }
-            ExpandErrorKind::Other(e) => ((**e).to_owned(), true),
-            ExpandErrorKind::ProcMacroPanic(e) => (format!("proc-macro panicked: {e}"), true),
+            ExpandErrorKind::MacroDefinition => RenderedExpandError {
+                message: "macro definition has parse errors".to_owned(),
+                error: true,
+                kind: RenderedExpandError::GENERAL_KIND,
+            },
+            ExpandErrorKind::Mbe(e) => RenderedExpandError {
+                message: e.to_string(),
+                error: true,
+                kind: RenderedExpandError::GENERAL_KIND,
+            },
+            ExpandErrorKind::RecursionOverflow => RenderedExpandError {
+                message: "overflow expanding the original macro".to_owned(),
+                error: true,
+                kind: RenderedExpandError::GENERAL_KIND,
+            },
+            ExpandErrorKind::Other(e) => RenderedExpandError {
+                message: (**e).to_owned(),
+                error: true,
+                kind: RenderedExpandError::GENERAL_KIND,
+            },
+            ExpandErrorKind::ProcMacroPanic(e) => RenderedExpandError {
+                message: format!("proc-macro panicked: {e}"),
+                error: true,
+                kind: RenderedExpandError::GENERAL_KIND,
+            },
         }
     }
 }
diff --git a/src/tools/rust-analyzer/crates/hir/src/diagnostics.rs b/src/tools/rust-analyzer/crates/hir/src/diagnostics.rs
index 2fedffe047d..8297acde857 100644
--- a/src/tools/rust-analyzer/crates/hir/src/diagnostics.rs
+++ b/src/tools/rust-analyzer/crates/hir/src/diagnostics.rs
@@ -165,6 +165,7 @@ pub struct MacroError {
     pub precise_location: Option<TextRange>,
     pub message: String,
     pub error: bool,
+    pub kind: &'static str,
 }
 
 #[derive(Debug, Clone, Eq, PartialEq)]
diff --git a/src/tools/rust-analyzer/crates/hir/src/lib.rs b/src/tools/rust-analyzer/crates/hir/src/lib.rs
index 4a18795e7d6..f9b51b65709 100644
--- a/src/tools/rust-analyzer/crates/hir/src/lib.rs
+++ b/src/tools/rust-analyzer/crates/hir/src/lib.rs
@@ -58,7 +58,8 @@ use hir_def::{
     TypeOrConstParamId, TypeParamId, UnionId,
 };
 use hir_expand::{
-    attrs::collect_attrs, proc_macro::ProcMacroKind, AstId, MacroCallKind, ValueResult,
+    attrs::collect_attrs, proc_macro::ProcMacroKind, AstId, MacroCallKind, RenderedExpandError,
+    ValueResult,
 };
 use hir_ty::{
     all_super_traits, autoderef, check_orphan_rules,
@@ -838,7 +839,7 @@ fn macro_call_diagnostics(
         let file_id = loc.kind.file_id();
         let node =
             InFile::new(file_id, db.ast_id_map(file_id).get_erased(loc.kind.erased_ast_id()));
-        let (message, error) = err.render_to_string(db.upcast());
+        let RenderedExpandError { message, error, kind } = err.render_to_string(db.upcast());
         let precise_location = if err.span().anchor.file_id == file_id {
             Some(
                 err.span().range
@@ -850,7 +851,7 @@ fn macro_call_diagnostics(
         } else {
             None
         };
-        acc.push(MacroError { node, precise_location, message, error }.into());
+        acc.push(MacroError { node, precise_location, message, error, kind }.into());
     }
 
     if !parse_errors.is_empty() {
@@ -916,13 +917,14 @@ fn emit_def_diagnostic_(
 
         DefDiagnosticKind::MacroError { ast, path, err } => {
             let item = ast.to_ptr(db.upcast());
-            let (message, error) = err.render_to_string(db.upcast());
+            let RenderedExpandError { message, error, kind } = err.render_to_string(db.upcast());
             acc.push(
                 MacroError {
                     node: InFile::new(ast.file_id, item.syntax_node_ptr()),
                     precise_location: None,
                     message: format!("{}: {message}", path.display(db.upcast(), edition)),
                     error,
+                    kind,
                 }
                 .into(),
             )
@@ -1811,7 +1813,8 @@ impl DefWithBody {
                     InactiveCode { node: *node, cfg: cfg.clone(), opts: opts.clone() }.into()
                 }
                 BodyDiagnostic::MacroError { node, err } => {
-                    let (message, error) = err.render_to_string(db.upcast());
+                    let RenderedExpandError { message, error, kind } =
+                        err.render_to_string(db.upcast());
 
                     let precise_location = if err.span().anchor.file_id == node.file_id {
                         Some(
@@ -1829,6 +1832,7 @@ impl DefWithBody {
                         precise_location,
                         message,
                         error,
+                        kind,
                     }
                     .into()
                 }
diff --git a/src/tools/rust-analyzer/crates/ide-diagnostics/src/handlers/macro_error.rs b/src/tools/rust-analyzer/crates/ide-diagnostics/src/handlers/macro_error.rs
index 6a976697c80..e177b72e4d4 100644
--- a/src/tools/rust-analyzer/crates/ide-diagnostics/src/handlers/macro_error.rs
+++ b/src/tools/rust-analyzer/crates/ide-diagnostics/src/handlers/macro_error.rs
@@ -3,14 +3,19 @@ use crate::{Diagnostic, DiagnosticCode, DiagnosticsContext, Severity};
 // Diagnostic: macro-error
 //
 // This diagnostic is shown for macro expansion errors.
+
+// Diagnostic: proc-macros-disabled
+//
+// This diagnostic is shown for proc macros where proc macros have been disabled.
+
+// Diagnostic: proc-macro-disabled
+//
+// This diagnostic is shown for proc macros that has been specifically disabled via `rust-analyzer.procMacro.ignored`.
 pub(crate) fn macro_error(ctx: &DiagnosticsContext<'_>, d: &hir::MacroError) -> Diagnostic {
     // Use more accurate position if available.
     let display_range = ctx.resolve_precise_location(&d.node, d.precise_location);
     Diagnostic::new(
-        DiagnosticCode::Ra(
-            "macro-error",
-            if d.error { Severity::Error } else { Severity::WeakWarning },
-        ),
+        DiagnosticCode::Ra(d.kind, if d.error { Severity::Error } else { Severity::WeakWarning }),
         d.message.clone(),
         display_range,
     )