From 319f38aee3ebe44d106df343004c62d93a7dff04 Mon Sep 17 00:00:00 2001
From: arslee07 <mail@arslee.me>
Date: Wed, 15 May 2024 13:10:57 +0900
Subject: [PATCH] Fixed arrays scanning; sped up byte array scanning

---
 format/nbt/load.ha | 32 ++++++++++++++++++++++----------
 1 file changed, 22 insertions(+), 10 deletions(-)

diff --git a/format/nbt/load.ha b/format/nbt/load.ha
index 3ce23df..a5dce4c 100644
--- a/format/nbt/load.ha
+++ b/format/nbt/load.ha
@@ -61,22 +61,24 @@ fn scan_double(h: io::handle) (f64 | error) = {
 
 fn scan_byte_array(h: io::handle) ([]i8 | error) = {
 	let length = scan_int(h)?: size;
-	let buf = alloc([0i8...], length);
-	for (let i = 0z; i < length; i += 1) {
-		match (scan_byte(h)) {
-		case let err: error => {
-			free(buf);
-			return err;
-		};
-		case let val: i8 =>
-			buf[i] = val;
-		};
+
+	if (length == 0) {
+		return []: []i8;
 	};
+
+	let buf = alloc([0i8...], length);
+	scan_buf(h, buf: []u8)?;
+
 	return buf;
 };
 
 fn scan_int_array(h: io::handle) ([]i32 | error) = {
 	let length = scan_int(h)?: size;
+
+	if (length == 0) {
+		return []: []i32;
+	};
+
 	let buf = alloc([0i32...], length);
 	for (let i = 0z; i < length; i += 1) {
 		match (scan_int(h)) {
@@ -93,6 +95,11 @@ fn scan_int_array(h: io::handle) ([]i32 | error) = {
 
 fn scan_long_array(h: io::handle) ([]i64 | error) = {
 	let length = scan_int(h)?: size;
+
+	if (length == 0) {
+		return []: []i64;
+	};
+
 	let buf = alloc([0i64...], length);
 	
 	for (let i = 0z; i < length; i += 1) {
@@ -112,6 +119,11 @@ fn scan_long_array(h: io::handle) ([]i64 | error) = {
 fn scan_list(h: io::handle) (list | error) = {
 	let typ = scan_type(h)?;
 	let length = scan_int(h)?: size;
+
+	if (length == 0) {
+		return (tagtype::END, []: []payload);
+	};
+
 	let list: []payload = alloc([end...], length);
 
 	for (let i = 0z; i < length; i += 1) {
-- 
2.45.2