From 1ab9bba9da02884206a30bd710cc546be913702d Mon Sep 17 00:00:00 2001
From: kayomn <kayomn@kayomn.net>
Date: Sun, 7 May 2023 14:51:22 +0100
Subject: [PATCH] Implement null allocator

---
 source/coral/io.zig | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/source/coral/io.zig b/source/coral/io.zig
index 58fb24b..d52284f 100755
--- a/source/coral/io.zig
+++ b/source/coral/io.zig
@@ -164,13 +164,22 @@ pub fn equals(this: []const u8, that: []const u8) bool {
 
 var null_context = @as(usize, 0);
 
+pub const null_allocator = Allocator.bind(&null_context, struct {
+	fn reallocate(context: *usize, options: AllocationOptions) ?[]u8 {
+		debug.assert(context.* == 0);
+		debug.assert(options.allocation == null);
+
+		return null;
+	}
+});
+
 pub const null_writer = Writer.bind(&null_context, struct {
-	pub fn write(context: *usize, buffer: []const u8) usize {
+	fn write(context: *usize, buffer: []const u8) usize {
 		debug.assert(context.* == 0);
 
 		return buffer.len;
 	}
-});
+}.write);
 
 pub fn overlaps(pointer: [*]u8, memory_range: []u8) bool {
 	return (pointer >= memory_range.ptr) and (pointer < (memory_range.ptr + memory_range.len));