From d7750999b3b1c5edefe6a70d00ae934045cdf562 Mon Sep 17 00:00:00 2001
From: Linus Groh <mail@linusgroh.de>
Date: Sun, 27 Jun 2021 20:57:39 +0100
Subject: [PATCH] LibJS: Implement the TypedArray [[ContentType]] internal slot

---
 Userland/Libraries/LibJS/Runtime/TypedArray.cpp | 4 ++++
 Userland/Libraries/LibJS/Runtime/TypedArray.h   | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/Userland/Libraries/LibJS/Runtime/TypedArray.cpp b/Userland/Libraries/LibJS/Runtime/TypedArray.cpp
index 8a2f0ee895..f42bc1fa3b 100644
--- a/Userland/Libraries/LibJS/Runtime/TypedArray.cpp
+++ b/Userland/Libraries/LibJS/Runtime/TypedArray.cpp
@@ -204,6 +204,10 @@ void TypedArrayBase::visit_edges(Visitor& visitor)
     ClassName::ClassName(u32 length, Object& prototype)                                                                                \
         : TypedArray(length, prototype)                                                                                                \
     {                                                                                                                                  \
+        if constexpr (StringView { #ClassName }.is_one_of("BigInt64Array", "BigUint64Array"))                                          \
+            m_content_type = ContentType::BigInt;                                                                                      \
+        else                                                                                                                           \
+            m_content_type = ContentType::Number;                                                                                      \
     }                                                                                                                                  \
                                                                                                                                        \
     ClassName::~ClassName() { }                                                                                                        \
diff --git a/Userland/Libraries/LibJS/Runtime/TypedArray.h b/Userland/Libraries/LibJS/Runtime/TypedArray.h
index c84a5cbe69..0ea87b77d5 100644
--- a/Userland/Libraries/LibJS/Runtime/TypedArray.h
+++ b/Userland/Libraries/LibJS/Runtime/TypedArray.h
@@ -17,9 +17,15 @@ class TypedArrayBase : public Object {
     JS_OBJECT(TypedArrayBase, Object);
 
 public:
+    enum class ContentType {
+        BigInt,
+        Number,
+    };
+
     u32 array_length() const { return m_array_length; }
     u32 byte_length() const { return m_byte_length; }
     u32 byte_offset() const { return m_byte_offset; }
+    ContentType content_type() const { return m_content_type; }
     ArrayBuffer* viewed_array_buffer() const { return m_viewed_array_buffer; }
 
     void set_array_length(u32 length) { m_array_length = length; }
@@ -39,6 +45,7 @@ protected:
     u32 m_array_length { 0 };
     u32 m_byte_length { 0 };
     u32 m_byte_offset { 0 };
+    ContentType m_content_type { ContentType::Number };
     ArrayBuffer* m_viewed_array_buffer { nullptr };
 
 private: