5 files changed, 32 insertions, 12 deletions

diff --git a/crates/ra_analysis/src/imp.rs b/crates/ra_analysis/src/imp.rs
index b01382808..e054227a9 100644
--- a/crates/ra_analysis/src/imp.rs
+++ b/crates/ra_analysis/src/imp.rs
@@ -3,7 +3,7 @@ use std::{
     sync::Arc,
 };
 
-use ra_editor::{self, find_node_at_offset, FileSymbol, LineIndex, LocalEdit};
+use ra_editor::{self, find_node_at_offset, FileSymbol, LineIndex, LocalEdit, Severity};
 use ra_syntax::{
     ast::{self, ArgListOwner, Expr, NameOwner},
     AstNode, SourceFileNode,
@@ -364,6 +364,7 @@ impl AnalysisImpl {
             .map(|d| Diagnostic {
                 range: d.range,
                 message: d.msg,
+                severity: d.severity,
                 fix: None,
             })
             .collect::<Vec<_>>();
@@ -385,6 +386,7 @@ impl AnalysisImpl {
                         Diagnostic {
                             range: name_node.range(),
                             message: "unresolved module".to_string(),
+                            severity: Some(Severity::Error),
                             fix: Some(fix),
                         }
                     }
@@ -407,6 +409,7 @@ impl AnalysisImpl {
                         Diagnostic {
                             range: name_node.range(),
                             message: "can't declare module at this location".to_string(),
+                            severity: Some(Severity::Error),
                             fix: Some(fix),
                         }
                     }
diff --git a/crates/ra_analysis/src/lib.rs b/crates/ra_analysis/src/lib.rs
index 85df9c089..8ab6334a7 100644
--- a/crates/ra_analysis/src/lib.rs
+++ b/crates/ra_analysis/src/lib.rs
@@ -34,6 +34,7 @@ pub use crate::{
 };
 pub use ra_editor::{
     FileSymbol, Fold, FoldKind, HighlightedRange, LineIndex, Runnable, RunnableKind, StructureNode,
+    Severity
 };
 pub use hir::FnSignatureInfo;
 
@@ -198,6 +199,7 @@ pub struct Diagnostic {
     pub message: String,
     pub range: TextRange,
     pub fix: Option<SourceChange>,
+    pub severity: Option<Severity>,
 }
 
 #[derive(Debug)]
diff --git a/crates/ra_analysis/tests/tests.rs b/crates/ra_analysis/tests/tests.rs
index 938ca797a..2313e35f5 100644
--- a/crates/ra_analysis/tests/tests.rs
+++ b/crates/ra_analysis/tests/tests.rs
@@ -82,7 +82,8 @@ fn test_unresolved_module_diagnostic() {
                 label: "create module",
                 source_file_edits: [],
                 file_system_edits: [CreateFile { source_root: SourceRootId(0), path: "foo.rs" }],
-                cursor_position: None }) }]"#,
+                cursor_position: None }),
+                severity: Some(Error) }]"#,
         &diagnostics,
     );
 }
diff --git a/crates/ra_editor/src/lib.rs b/crates/ra_editor/src/lib.rs
index 48676f2e8..399bb8fe8 100644
--- a/crates/ra_editor/src/lib.rs
+++ b/crates/ra_editor/src/lib.rs
@@ -34,14 +34,16 @@ pub struct HighlightedRange {
 #[derive(Debug, Copy, Clone)]
 pub enum Severity {
     Error,
-    Warning
+    Warning,
+    Information,
+    Hint,
 }
 
 #[derive(Debug)]
 pub struct Diagnostic {
     pub range: TextRange,
     pub msg: String,
-    pub severity: Severity,
+    pub severity: Option<Severity>,
 }
 
 #[derive(Debug)]
@@ -104,12 +106,13 @@ pub fn diagnostics(file: &SourceFileNode) -> Vec<Diagnostic> {
         }
     }
 
-    let mut errors: Vec<Diagnostic> = file.errors()
+    let mut errors: Vec<Diagnostic> = file
+        .errors()
         .into_iter()
         .map(|err| Diagnostic {
             range: location_to_range(err.location()),
             msg: format!("Syntax Error: {}", err),
-            severity: Severity::Error,
+            severity: Some(Severity::Error),
         })
         .collect();
 
@@ -127,7 +130,7 @@ fn check_unnecessary_braces_in_use_statement(file: &SourceFileNode) -> Vec<Diagn
                 diagnostics.push(Diagnostic {
                     range: use_tree_list.syntax().range(),
                     msg: format!("Unnecessary braces in use statement"),
-                    severity: Severity::Warning,
+                    severity: Some(Severity::Warning),
                 })
             }
         }
@@ -249,9 +252,9 @@ fn main() {}
         );
         let diagnostics = check_unnecessary_braces_in_use_statement(&file);
         assert_eq_dbg(
-            r#"[Diagnostic { range: [12; 15), msg: "Unnecessary braces in use statement", severity: Warning },
-                Diagnostic { range: [24; 27), msg: "Unnecessary braces in use statement", severity: Warning },
-                Diagnostic { range: [61; 64), msg: "Unnecessary braces in use statement", severity: Warning }]"#,
+            r#"[Diagnostic { range: [12; 15), msg: "Unnecessary braces in use statement", severity: Some(Warning) },
+                Diagnostic { range: [24; 27), msg: "Unnecessary braces in use statement", severity: Some(Warning) },
+                Diagnostic { range: [61; 64), msg: "Unnecessary braces in use statement", severity: Some(Warning) }]"#,
             &diagnostics,
         )
     }
diff --git a/crates/ra_lsp_server/src/main_loop/handlers.rs b/crates/ra_lsp_server/src/main_loop/handlers.rs
index 252d1ba3e..8e859e8d4 100644
--- a/crates/ra_lsp_server/src/main_loop/handlers.rs
+++ b/crates/ra_lsp_server/src/main_loop/handlers.rs
@@ -8,7 +8,7 @@ use languageserver_types::{
     PrepareRenameResponse, RenameParams, SymbolInformation, TextDocumentIdentifier, TextEdit,
     WorkspaceEdit, ParameterInformation, ParameterLabel, SignatureInformation, Hover, HoverContents,
 };
-use ra_analysis::{FileId, FoldKind, Query, RunnableKind, FilePosition};
+use ra_analysis::{FileId, FoldKind, Query, RunnableKind, FilePosition, Severity};
 use ra_syntax::{TextUnit, text_utils::intersect};
 use ra_text_edit::text_utils::contains_offset_nonstrict;
 use rustc_hash::FxHashMap;
@@ -650,7 +650,7 @@ pub fn publish_diagnostics(
         .into_iter()
         .map(|d| Diagnostic {
             range: d.range.conv_with(&line_index),
-            severity: Some(DiagnosticSeverity::Error),
+            severity: d.severity.map(to_diagnostic_severity),
             code: None,
             source: Some("rust-analyzer".to_string()),
             message: d.message,
@@ -684,3 +684,14 @@ fn highlight(world: &ServerWorld, file_id: FileId) -> Result<Vec<Decoration>> {
         .collect();
     Ok(res)
 }
+
+fn to_diagnostic_severity(severity: Severity) -> DiagnosticSeverity {
+    use ra_analysis::Severity::*;
+
+    match severity {
+        Error => DiagnosticSeverity::Error,
+        Warning => DiagnosticSeverity::Warning,
+        Information => DiagnosticSeverity::Information,
+        Hint => DiagnosticSeverity::Hint,
+    }
+}