From 4d69be06334bee81a10625b215d0b97c206b44c3 Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Sat, 6 Jul 2024 23:36:02 +0100
Subject: [PATCH] posts: gap-buffer: add accessors

---
 content/posts/2024-07-06-gap-buffer/index.md | 27 ++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/content/posts/2024-07-06-gap-buffer/index.md b/content/posts/2024-07-06-gap-buffer/index.md
index 2b02dc4..a90e8a4 100644
--- a/content/posts/2024-07-06-gap-buffer/index.md
+++ b/content/posts/2024-07-06-gap-buffer/index.md
@@ -72,3 +72,30 @@ class GapBuffer:
         self._gap_start = 0
         self._gap_end = initial_capacity
 ```
+
+### Accessors
+
+I'm mostly adding these for exposition, and making it easier to write `assert`s
+later.
+
+```python
+@property
+def capacity(self) -> int:
+  return len(self._buf)
+
+@property
+def gap_length(self) -> int:
+  return self._gap_end - self._gap_start
+
+@property
+def string_length(self) -> int:
+  return self.capacity - self.gap_length
+
+@property
+def prefix_length(self) -> int:
+  return self._gap_start
+
+@property
+def suffix_length(self) -> int:
+  return self.capacity - self._gap_end
+```