Clean up Pointer

1 files changed, 3 insertions, 67 deletions

diff --git a/pointer.go b/pointer.go
index 92b2bcb..7727833 100644
--- a/pointer.go
+++ b/pointer.go
@@ -1,18 +1,5 @@
 package parsec
 
-import (
-	"strings"
-	"unicode/utf8"
-)
-
-const (
-	EOF rune = -1
-)
-
-func Input(s string) Pointer {
-	return Pointer{s, 0}
-}
-
 type Pointer struct {
 	input string
 	pos   int
@@ -23,59 +10,8 @@ func (p Pointer) Advance(i int) Pointer {
 }
 
 func (p Pointer) Get() string {
-	return p.input[p.pos:]
-}
-
-func (p Pointer) Remaining() int {
-	remaining := len(p.input) - p.pos
-	if remaining < 0 {
-		return 0
-	}
-	return remaining
-}
-
-func (p Pointer) Next() (rune, Pointer) {
-	if int(p.pos) >= len(p.input) {
-		return EOF, p
-	}
-	r, w := utf8.DecodeRuneInString(p.input[p.pos:])
-	return r, p.Advance(w)
-}
-
-func (p Pointer) HasPrefix(s string) bool {
-	return strings.HasPrefix(p.input[p.pos:], s)
-}
-
-func (p Pointer) Accept(valid string) (string, Pointer) {
-	c, newP := p.Next()
-	if strings.ContainsRune(valid, c) {
-		return string(c), newP
-	}
-	return "", p
-}
-
-func (p Pointer) AcceptRun(valid string) (string, Pointer) {
-	matched := 0
-	for p.pos+matched < len(p.input) {
-		r, w := utf8.DecodeRuneInString(p.input[p.pos+matched:])
-		if !strings.ContainsRune(valid, r) {
-			break
-		}
-		matched += w
+	if p.pos > len(p.input) {
+		return ""
 	}
-
-	return p.input[p.pos : p.pos+matched], p.Advance(matched)
-}
-
-func (p Pointer) AcceptUntil(invalid string) (string, Pointer) {
-	matched := 0
-	for p.pos+matched < len(p.input) {
-		r, w := utf8.DecodeRuneInString(p.input[p.pos+matched:])
-		if strings.ContainsRune(invalid, r) {
-			break
-		}
-		matched += w
-	}
-
-	return p.input[p.pos : p.pos+matched], p.Advance(matched)
+	return p.input[p.pos:]
 }