bind/package: add lookup function

bind/package.go

@@ -28,6 +28,7 @@ func NewPackage(pkg *types.Package, doc *doc.Package) (*Package, error) {
 	p := &Package{
 		pkg:  pkg,
 		doc:  doc,
+		objs: map[string]Object{},
 	}
 	err := p.process()
 	if err != nil {
@@ -211,11 +212,11 @@ func (p *Package) process() error {
 			}
 			s.meths = append(s.meths, m)
 		}
-		p.structs = append(p.structs, s)
+		p.addStruct(s)
 	}
 
 	for _, fct := range funcs {
-		p.funcs = append(p.funcs, fct)
+		p.addFunc(fct)
 	}
 
 	return err
@@ -231,6 +232,22 @@ func (p *Package) addVar(obj *types.Var) {
 	panic(fmt.Errorf("not yet supported: %v (%T)", obj, obj))
 }
 
+func (p *Package) addStruct(s Struct) {
+	p.structs = append(p.structs, s)
+	p.objs[s.GoName()] = s
+}
+
+func (p *Package) addFunc(f Func) {
+	p.funcs = append(p.funcs, f)
+	p.objs[f.GoName()] = f
+}
+
+// Lookup returns the bind.Object corresponding to a types.Object
+func (p *Package) Lookup(o types.Object) (Object, bool) {
+	obj, ok := p.objs[o.Name()]
+	return obj, ok
+}
+
 // Struct collects informations about a go struct.
 type Struct struct {
 	pkg *Package