1 files changed, 63 insertions, 1 deletions

diff --git a/crates/ra_ide_api/src/lib.rs b/crates/ra_ide_api/src/lib.rs
index f505959ce..65d21d899 100644
--- a/crates/ra_ide_api/src/lib.rs
+++ b/crates/ra_ide_api/src/lib.rs
@@ -33,7 +33,8 @@ mod syntax_highlighting;
 
 use std::{fmt, sync::Arc};
 
-use ra_syntax::{SmolStr, SourceFile, TreePtr, SyntaxKind, TextRange, TextUnit};
+use hir::{Def, ModuleSource, Name};
+use ra_syntax::{SmolStr, SourceFile, TreePtr, SyntaxKind, SyntaxNode, TextRange, TextUnit, AstNode};
 use ra_text_edit::TextEdit;
 use ra_db::{SyntaxDatabase, FilesDatabase, LocalSyntaxPtr, BaseDatabase};
 use rayon::prelude::*;
@@ -268,6 +269,67 @@ impl NavigationTarget {
         }
     }
 
+    fn from_syntax(name: Option<Name>, file_id: FileId, node: &SyntaxNode) -> NavigationTarget {
+        NavigationTarget {
+            file_id,
+            name: name.map(|n| n.to_string().into()).unwrap_or("".into()),
+            kind: node.kind(),
+            range: node.range(),
+            ptr: Some(LocalSyntaxPtr::new(node)),
+        }
+    }
+    // TODO once Def::Item is gone, this should be able to always return a NavigationTarget
+    fn from_def(db: &db::RootDatabase, def: Def) -> Cancelable<Option<NavigationTarget>> {
+        Ok(match def {
+            Def::Struct(s) => {
+                let (file_id, node) = s.source(db)?;
+                Some(NavigationTarget::from_syntax(
+                    s.name(db)?,
+                    file_id.original_file(db),
+                    node.syntax(),
+                ))
+            }
+            Def::Enum(e) => {
+                let (file_id, node) = e.source(db)?;
+                Some(NavigationTarget::from_syntax(
+                    e.name(db)?,
+                    file_id.original_file(db),
+                    node.syntax(),
+                ))
+            }
+            Def::EnumVariant(ev) => {
+                let (file_id, node) = ev.source(db)?;
+                Some(NavigationTarget::from_syntax(
+                    ev.name(db)?,
+                    file_id.original_file(db),
+                    node.syntax(),
+                ))
+            }
+            Def::Function(f) => {
+                let (file_id, node) = f.source(db)?;
+                let name = f.signature(db).name().clone();
+                Some(NavigationTarget::from_syntax(
+                    Some(name),
+                    file_id.original_file(db),
+                    node.syntax(),
+                ))
+            }
+            Def::Module(m) => {
+                let (file_id, source) = m.definition_source(db)?;
+                let name = m.name(db)?;
+                match source {
+                    ModuleSource::SourceFile(node) => {
+                        Some(NavigationTarget::from_syntax(name, file_id, node.syntax()))
+                    }
+                    ModuleSource::Module(node) => {
+                        Some(NavigationTarget::from_syntax(name, file_id, node.syntax()))
+                    }
+                }
+            }
+            Def::Item => None,
+        })
+    }
+
     pub fn name(&self) -> &SmolStr {
         &self.name
     }