From 23a4448862c55f9206c0054e30c8ca447dd7b850 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Thu, 3 Jun 2021 18:29:30 +0200
Subject: [PATCH] LibJS: Add formatting helper for Bytecode::Register

---
 Userland/Libraries/LibJS/Bytecode/Op.cpp     | 10 +++++-----
 Userland/Libraries/LibJS/Bytecode/Register.h | 10 +++++++++-
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/Userland/Libraries/LibJS/Bytecode/Op.cpp b/Userland/Libraries/LibJS/Bytecode/Op.cpp
index 017edd0f87..b1feea00e4 100644
--- a/Userland/Libraries/LibJS/Bytecode/Op.cpp
+++ b/Userland/Libraries/LibJS/Bytecode/Op.cpp
@@ -38,27 +38,27 @@ void SetVariable::execute(Bytecode::Interpreter& interpreter) const
 
 String Load::to_string() const
 {
-    return String::formatted("Load dst:r{}, value:{}", m_dst.index(), m_value.to_string_without_side_effects());
+    return String::formatted("Load dst:{}, value:{}", m_dst, m_value.to_string_without_side_effects());
 }
 
 String Add::to_string() const
 {
-    return String::formatted("Add dst:r{}, src1:r{}, src2:r{}", m_dst.index(), m_src1.index(), m_src2.index());
+    return String::formatted("Add dst:{}, src1:{}, src2:{}", m_dst, m_src1, m_src2);
 }
 
 String NewString::to_string() const
 {
-    return String::formatted("NewString dst:r{}, string:\"{}\"", m_dst.index(), m_string);
+    return String::formatted("NewString dst:{}, string:\"{}\"", m_dst, m_string);
 }
 
 String GetVariable::to_string() const
 {
-    return String::formatted("GetVariable dst:r{}, identifier:{}", m_dst.index(), m_identifier);
+    return String::formatted("GetVariable dst:{}, identifier:{}", m_dst, m_identifier);
 }
 
 String SetVariable::to_string() const
 {
-    return String::formatted("SetVariable identifier:{}, src:r{}", m_identifier, m_src.index());
+    return String::formatted("SetVariable identifier:{}, src:{}", m_identifier, m_src);
 }
 
 }
diff --git a/Userland/Libraries/LibJS/Bytecode/Register.h b/Userland/Libraries/LibJS/Bytecode/Register.h
index b3c8681fd9..d902a6ac86 100644
--- a/Userland/Libraries/LibJS/Bytecode/Register.h
+++ b/Userland/Libraries/LibJS/Bytecode/Register.h
@@ -6,7 +6,7 @@
 
 #pragma once
 
-#include <AK/Types.h>
+#include <AK/Format.h>
 
 namespace JS::Bytecode {
 
@@ -24,3 +24,11 @@ private:
 };
 
 }
+
+template<>
+struct AK::Formatter<JS::Bytecode::Register> : AK::Formatter<FormatString> {
+    void format(FormatBuilder& builder, JS::Bytecode::Register const& value)
+    {
+        return AK::Formatter<FormatString>::format(builder, "r{}", value.index());
+    }
+};