From 9f27e956a8ede1a12b3c93cc3b647951ebd0c95e Mon Sep 17 00:00:00 2001
From: Rerumu <rerumu@protonmail.com>
Date: Mon, 22 Aug 2022 21:45:48 -0400
Subject: [PATCH] Add `load.string` to the runtime

---
 codegen/luajit/runtime/runtime.lua |  6 ++++++
 codegen/luau/runtime/runtime.lua   | 13 +++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/codegen/luajit/runtime/runtime.lua b/codegen/luajit/runtime/runtime.lua
index ba491ba..6fe6b83 100644
--- a/codegen/luajit/runtime/runtime.lua
+++ b/codegen/luajit/runtime/runtime.lua
@@ -706,6 +706,12 @@ do
 		return by_offset(memory.data, addr).f64
 	end
 
+	function load.string(memory, addr, len)
+		local start = cast(alias_t, memory.data) + addr
+
+		return ffi.string(start, len)
+	end
+
 	function store.i32_n8(memory, addr, value)
 		by_offset(memory.data, addr).i8 = value
 	end
diff --git a/codegen/luau/runtime/runtime.lua b/codegen/luau/runtime/runtime.lua
index 9fdce07..226bfb0 100644
--- a/codegen/luau/runtime/runtime.lua
+++ b/codegen/luau/runtime/runtime.lua
@@ -622,6 +622,7 @@ do
 	local math_floor = math.floor
 
 	local string_byte = string.byte
+	local string_char = string.char
 	local string_unpack = string.unpack
 
 	local reinterpret_f32_i32 = module.reinterpret.f32_i32
@@ -830,6 +831,18 @@ do
 		return reinterpret_f64_i64(raw)
 	end
 
+	function load.string(memory, addr, len)
+		local buffer = table.create(len)
+
+		for i = 1, len do
+			local raw = load_byte(memory.data, addr + i - 1)
+
+			buffer[i] = string_char(raw)
+		end
+
+		return table.concat(buffer)
+	end
+
 	function store.i32_n8(memory, addr, value)
 		store_byte(memory.data, addr, value)
 	end