field signatures

src/librustc_save_analysis/data.rs

@@ -387,6 +387,7 @@ pub struct VariableData {
     pub type_value: String,
     pub visibility: Visibility,
     pub docs: String,
+    pub sig: Option<Signature>,
 }
 
 #[derive(Debug, RustcEncodable)]

src/librustc_save_analysis/dump_visitor.rs

@@ -372,6 +372,7 @@ fn process_formals(&mut self, formals: &'l [ast::Arg], qualname: &str) {
                         parent: None,
                         visibility: Visibility::Inherited,
                         docs: String::new(),
+                        sig: None,
                     }.lower(self.tcx));
                 }
             }
@@ -587,6 +588,7 @@ fn process_assoc_const(&mut self,
                 parent: Some(parent_id),
                 visibility: vis,
                 docs: docs_for_attrs(attrs),
+                sig: None,
             }.lower(self.tcx));
         }
 
@@ -1072,6 +1074,7 @@ fn process_var_decl(&mut self, p: &'l ast::Pat, value: String) {
                     parent: None,
                     visibility: Visibility::Inherited,
                     docs: String::new(),
+                    sig: None,
                 }.lower(self.tcx));
             }
         }
@@ -1521,6 +1524,7 @@ fn visit_arm(&mut self, arm: &'l ast::Arm) {
                             parent: None,
                             visibility: Visibility::Inherited,
                             docs: String::new(),
+                            sig: None,
                         }.lower(self.tcx));
                     }
                 }

src/librustc_save_analysis/external_data.rs

@@ -658,6 +658,7 @@ pub struct VariableData {
     pub parent: Option<DefId>,
     pub visibility: Visibility,
     pub docs: String,
+    pub sig: Option<Signature>,
 }
 
 impl Lower for data::VariableData {
@@ -676,6 +677,7 @@ fn lower(self, tcx: TyCtxt) -> VariableData {
             parent: self.parent,
             visibility: self.visibility,
             docs: self.docs,
+            sig: self.sig.map(|s| s.lower(tcx)),
         }
     }
 }

src/librustc_save_analysis/json_api_dumper.rs

@@ -419,7 +419,7 @@ fn from(data: VariableData) -> Option<Def> {
                 parent: data.parent.map(|id| From::from(id)),
                 decl_id: None,
                 docs: data.docs,
-                sig: None,
+                sig: data.sig,
             }),
             _ => None,
         }

src/librustc_save_analysis/json_dumper.rs

@@ -379,7 +379,7 @@ fn from(data: MacroData) -> Def {
             children: vec![],
             decl_id: None,
             docs: data.docs,
-            sig: None,
+            sig: data.sig,
         }
     }
 }

src/librustc_save_analysis/lib.rs

@@ -179,6 +179,7 @@ pub fn get_item_data(&self, item: &ast::Item) -> Option<Data> {
                     type_value: ty_to_string(&typ),
                     visibility: From::from(&item.vis),
                     docs: docs_for_attrs(&item.attrs),
+                    sig: None,
                 }))
             }
             ast::ItemKind::Const(ref typ, ref expr) => {
@@ -197,6 +198,7 @@ pub fn get_item_data(&self, item: &ast::Item) -> Option<Data> {
                     type_value: ty_to_string(&typ),
                     visibility: From::from(&item.vis),
                     docs: docs_for_attrs(&item.attrs),
+                    sig: None,
                 }))
             }
             ast::ItemKind::Mod(ref m) => {
@@ -287,18 +289,39 @@ pub fn get_item_data(&self, item: &ast::Item) -> Option<Data> {
         }
     }
 
-    pub fn get_field_data(&self, field: &ast::StructField,
-                          scope: NodeId) -> Option<VariableData> {
+    pub fn get_field_data(&self,
+                          field: &ast::StructField,
+                          scope: NodeId)
+                          -> Option<VariableData> {
         if let Some(ident) = field.ident {
+            let name = ident.to_string();
             let qualname = format!("::{}::{}", self.tcx.node_path_str(scope), ident);
-            let def_id = self.tcx.map.local_def_id(field.id);
-            let typ = self.tcx.item_type(def_id).to_string();
             let sub_span = self.span_utils.sub_span_before_token(field.span, token::Colon);
             filter!(self.span_utils, sub_span, field.span, None);
+            let def_id = self.tcx.map.local_def_id(field.id);
+            let typ = self.tcx.item_type(def_id).to_string();
+
+            let span = field.span;
+            let text = self.span_utils.snippet(field.span);
+            let ident_start = text.find(&name).unwrap();
+            let ident_end = ident_start + name.len();
+            // TODO refs
+            let sig = Signature {
+                span: span,
+                text: text,
+                ident_start: ident_start,
+                ident_end: ident_end,
+                defs: vec![SigElement {
+                    id: def_id,
+                    start: ident_start,
+                    end: ident_end,
+                }],
+                refs: vec![],
+            };
             Some(VariableData {
                 id: field.id,
                 kind: VariableKind::Field,
-                name: ident.to_string(),
+                name: name,
                 qualname: qualname,
                 span: sub_span.unwrap(),
                 scope: scope,
@@ -307,6 +330,7 @@ pub fn get_field_data(&self, field: &ast::StructField,
                 type_value: typ,
                 visibility: From::from(&field.vis),
                 docs: docs_for_attrs(&field.attrs),
+                sig: Some(sig),
             })
         } else {
             None