From 43b2cff5b7dc2d6ba90e7314ce7fd04f803c2860 Mon Sep 17 00:00:00 2001
From: Alejandro Mery <amery@jpi.io>
Date: Mon, 28 Aug 2023 22:56:11 +0000
Subject: [PATCH] lexer: introduce Position.Next()/Position.NextLine()
 factories

Signed-off-by: Alejandro Mery <amery@jpi.io>
---
 lexer/position.go | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/lexer/position.go b/lexer/position.go
index d350eb7..8431306 100644
--- a/lexer/position.go
+++ b/lexer/position.go
@@ -84,3 +84,29 @@ func (p *Position) Add(rel Position) {
 		p.Column += rel.Column - 1
 	}
 }
+
+// Next returns a new Position one rune forward
+// on the line
+func (p Position) Next() Position {
+	if p.Line == 0 {
+		p.Reset()
+	}
+
+	return Position{
+		Line:   p.Line,
+		Column: p.Column + 1,
+	}
+}
+
+// NextLine returns a new Position at the beginning of the next
+// line.
+func (p Position) NextLine() Position {
+	if p.Line == 0 {
+		p.Reset()
+	}
+
+	return Position{
+		Line:   p.Line + 1,
+		Column: 1,
+	}
+}