From ae003d1854021bdbc3128b2752198761d06772fd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juan=20Manuel=20Tom=C3=A1s?= <jtomas1815@gmail.com>
Date: Wed, 22 Apr 2020 20:16:30 -0300
Subject: Refactor page structure

Changed the page's memory alignment to hopefully use less space.
Also renamed buffer to elements.
---
 page.c  | 14 +++++++-------
 point.c |  4 ++--
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/page.c b/page.c
index b945ef8..9a712ed 100644
--- a/page.c
+++ b/page.c
@@ -5,17 +5,17 @@
 #define PAGE_SIZE 4096
 
 struct page {
-	uint8_t *buffer;
+	uint8_t *elements;
+	struct page *next;
+	struct page *prev;
 	uint16_t gap_start;
 	uint16_t gap_end;
 	uint16_t element_count;
-	struct page *next;
-	struct page *prev;
 };
 
 struct page *new_page() {
 	struct page *result = malloc(sizeof(struct page));
-	result->buffer = malloc(PAGE_SIZE);
+	result->elements = malloc(PAGE_SIZE);
 	result->gap_start = 0;
 	result->gap_end = PAGE_SIZE;
 	result->next = 0;
@@ -26,7 +26,7 @@ struct page *new_page() {
 void split_page(struct page *back) {
 	struct page *front = new_page();
 
-	memcpy(front->buffer, back->buffer + PAGE_SIZE / 2, PAGE_SIZE / 2);
+	memcpy(front->elements, back->elements + PAGE_SIZE / 2, PAGE_SIZE / 2);
 
 	front->gap_start = PAGE_SIZE / 2;
 	front->gap_end = PAGE_SIZE;
@@ -55,7 +55,7 @@ void free_page(struct page *page) {
 }
 
 void move_gap_forward(struct page *page) {
-	page->buffer[page->gap_start] = page->buffer[page->gap_end];
+	page->elements[page->gap_start] = page->elements[page->gap_end];
 	page->gap_start++;
 	page->gap_end++;
 }
@@ -63,5 +63,5 @@ void move_gap_forward(struct page *page) {
 void move_gap_backward(struct page *page) {
 	page->gap_end--;
 	page->gap_start--;
-	page->buffer[page->gap_end] = page->buffer[page->gap_start];
+	page->elements[page->gap_end] = page->elements[page->gap_start];
 }
diff --git a/point.c b/point.c
index e9d6472..8413ad8 100644
--- a/point.c
+++ b/point.c
@@ -15,7 +15,7 @@ uint16_t index_to_offset(struct point *point) {
 }
 
 uint8_t element(struct point *point) {
-	return point->page->buffer[index_to_offset(point)];
+	return point->page->elements[index_to_offset(point)];
 }
 
 bool at_eof(struct point *point) {
@@ -60,7 +60,7 @@ void insert_at_point(struct point *point, uint8_t c) {
 		}
 	}
 	align_gap(point);
-	point->page->buffer[point->page->gap_start] = c;
+	point->page->elements[point->page->gap_start] = c;
 	point->page->gap_start++;
 	point->page->element_count++;
 	move_point_forward(point);
-- 
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