added claims type

claims.go

@@ -0,0 +1,52 @@
+// Copyright (C) 2018 Marius Schellenberger
+
+package jwt
+
+// Claims is the claim type of the token
+type Claims map[string]interface{}
+
+// Get returns a value from the claims map
+func (c Claims) Get(key string) (v interface{}, ok bool) {
+	v, ok = c[key]
+	return
+}
+
+// GetString returns a string from the claims map
+func (c Claims) GetString(key string) (s string) {
+	if v, ok := c.Get(key); ok && v != nil {
+		s, _ = v.(string)
+	}
+	return
+}
+
+// GetBool returns a bool from the claims map
+func (c Claims) GetBool(key string) (b bool) {
+	if v, ok := c.Get(key); ok && v != nil {
+		b, _ = v.(bool)
+	}
+	return
+}
+
+// GetInt returns an int from the claims map
+func (c Claims) GetInt(key string) (i int) {
+	if v, ok := c.Get(key); ok && v != nil {
+		i, _ = v.(int)
+	}
+	return
+}
+
+// GetFloat returns a float from the claims map
+func (c Claims) GetFloat(key string) (f float64) {
+	if v, ok := c.Get(key); ok && v != nil {
+		f, _ = v.(float64)
+	}
+	return
+}
+
+// Set sets the value of key in the claims map, if not nil
+func (c Claims) Set(key string, v interface{}) {
+	if c == nil {
+		return
+	}
+	c[key] = v
+}