Clean up Pointer

1 files changed, 6 insertions, 3 deletions

diff --git a/nodes.go b/nodes.go
index c51db6f..410fa7e 100644
--- a/nodes.go
+++ b/nodes.go
@@ -1,5 +1,7 @@
 package parsec
 
+import "fmt"
+
 type Node interface {
 	Pos() int
 }
@@ -16,11 +18,12 @@ func NewToken(pos int, value string) Token {
 }
 
 type Error struct {
-	pos   int
-	Error string
+	pos     int
+	Message string
 }
 
-func (e Error) Pos() int { return e.pos }
+func (e Error) Pos() int      { return e.pos }
+func (e Error) Error() string { return fmt.Sprintf("offset %d: %s", e.pos, e.Message) }
 
 func NewError(pos int, message string) Error {
 	return Error{pos, message}