godoc: initial support for showing popup information

for identifiers in Go source code

- at the moment just show identifier kind (var, func, etc.) and name
  (eventually should show declaration, type, etc.)
- JavaScript parts by adg

R=rsc
CC=adg, golang-dev
http://codereview.appspot.com/578042

1 files changed, 13 insertions, 0 deletions

diff --git a/src/pkg/go/ast/scope.go b/src/pkg/go/ast/scope.go
index 28e4f8db0..32b9d9d9f 100644
--- a/src/pkg/go/ast/scope.go
+++ b/src/pkg/go/ast/scope.go
@@ -19,6 +19,19 @@ const (
 )
 
 
+var objKindStrings = [...]string{
+	Err: "<unknown object kind>",
+	Pkg: "package",
+	Con: "const",
+	Typ: "type",
+	Var: "var",
+	Fun: "func",
+}
+
+
+func (kind ObjKind) String() string { return objKindStrings[kind] }
+
+
 // An Object describes a language entity such as a package,
 // constant, type, variable, or function (incl. methods).
 //