removing useless buffer, changing token type to int constants

token.go

@@ -4,28 +4,34 @@ import (
 	"fmt"
 )
 
+const (
+	URL = iota
+	TAG
+	DESCRIPTION
+)
+
 type Token struct {
-	Type  string
+	Type  int
 	Value string
 }
 
 func (t Token) String() string {
-	return fmt.Sprintf("%s : '%s'", t.Type, t.Value)
+	return fmt.Sprintf("%v : '%s'", t.Type, t.Value)
 }
 
 func Parse(t []Token) Feed {
 	var f Feed
 	for i := range t {
 		token := t[i]
-		if token.Type == "URL" {
+		if token.Type == URL {
 			f.URL = token.Value
 		}
 		
-		if token.Type == "DESC" {
+		if token.Type == DESCRIPTION {
 			f.Description = token.Value
 		}
 		
-		if token.Type == "TAG" {
+		if token.Type == TAG {
 			f.Tags = append(f.Tags, token.Value)
 		}
 	}