From a083052bf637aadf878cb6271f81cd749f850b67 Mon Sep 17 00:00:00 2001
From: Sebastien Binet <binet@cern.ch>
Date: Tue, 28 Jul 2015 14:35:59 +0200
Subject: [PATCH] bind/utils: helper to check wether a func is 'func String()
 string'

---
 bind/utils.go | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/bind/utils.go b/bind/utils.go
index 47471f3..e524909 100644
--- a/bind/utils.go
+++ b/bind/utils.go
@@ -11,3 +11,35 @@ import (
 func isErrorType(typ types.Type) bool {
 	return typ == types.Universe.Lookup("error").Type()
 }
+
+func isStringer(obj types.Object) bool {
+	switch obj := obj.(type) {
+	case *types.Func:
+		if obj.Name() != "String" {
+			return false
+		}
+		sig, ok := obj.Type().(*types.Signature)
+		if !ok {
+			return false
+		}
+		if sig.Recv() == nil {
+			return false
+		}
+		if sig.Params().Len() != 0 {
+			return false
+		}
+		res := sig.Results()
+		if res.Len() != 1 {
+			return false
+		}
+		ret := res.At(0).Type()
+		if ret != types.Universe.Lookup("string").Type() {
+			return false
+		}
+		return true
+	default:
+		return false
+	}
+
+	return false
+}