diagnostics

crates/ra_ide_api/src/diagnostics.rs

@@ -3,7 +3,7 @@ use hir::{Problem, source_binder};
 use ra_db::SourceDatabase;
 use ra_syntax::{
     Location, SourceFile, SyntaxKind, TextRange, SyntaxNode,
-    ast::{self, AstNode},
+    ast::{self, AstNode, NameOwner},
 
 };
 use ra_text_edit::{TextEdit, TextEditBuilder};
@@ -134,6 +134,13 @@ fn check_module(
     file_id: FileId,
     module: hir::Module,
 ) {
+    for decl in module.declarations(db) {
+        match decl {
+            hir::ModuleDef::Function(f) => check_function(acc, db, f),
+            _ => (),
+        }
+    }
+
     let source_root = db.file_source_root(file_id);
     for (name_node, problem) in module.problems(db) {
         let diag = match problem {
@@ -153,6 +160,27 @@ fn check_module(
     }
 }
 
+fn check_function(acc: &mut Vec<Diagnostic>, db: &RootDatabase, function: hir::Function) {
+    let (_file_id, fn_def) = function.source(db);
+    let source_file = fn_def.syntax().ancestors().find_map(ast::SourceFile::cast).unwrap();
+    let source_map = function.body_source_map(db);
+    for d in function.diagnostics(db) {
+        match d {
+            hir::diagnostics::FunctionDiagnostic::NoSuchField { expr, field } => {
+                if let Some(field) = source_map.field_syntax(expr, field) {
+                    let field = field.to_node(&source_file);
+                    acc.push(Diagnostic {
+                        message: "no such field".into(),
+                        range: field.syntax().range(),
+                        severity: Severity::Error,
+                        fix: None,
+                    })
+                }
+            }
+        }
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use test_utils::assert_eq_text;