Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibJS/Runtime/Symbol.cpp

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
+ * Copyright (c) 2022-2023, Linus Groh <linusg@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Heap/Heap.h>
+#include <LibJS/Runtime/Symbol.h>
+#include <LibJS/Runtime/VM.h>
+
+namespace JS {
+
+JS_DEFINE_ALLOCATOR(Symbol);
+
+Symbol::Symbol(Optional<String> description, bool is_global)
+    : m_description(move(description))
+    , m_is_global(is_global)
+{
+}
+
+NonnullGCPtr<Symbol> Symbol::create(VM& vm, Optional<String> description, bool is_global)
+{
+    return vm.heap().allocate_without_realm<Symbol>(move(description), is_global);
+}
+
+// 20.4.3.3.1 SymbolDescriptiveString ( sym ), https://tc39.es/ecma262/#sec-symboldescriptivestring
+ErrorOr<String> Symbol::descriptive_string() const
+{
+    // 1. Let desc be sym's [[Description]] value.
+    // 2. If desc is undefined, set desc to the empty String.
+    // 3. Assert: desc is a String.
+    auto description = m_description.value_or(String {});
+
+    // 4. Return the string-concatenation of "Symbol(", desc, and ")".
+    return String::formatted("Symbol({})", description);
+}
+
+// 20.4.5.1 KeyForSymbol ( sym ), https://tc39.es/ecma262/#sec-keyforsymbol
+Optional<String> Symbol::key() const
+{
+    // 1. For each element e of the GlobalSymbolRegistry List, do
+    //    a. If SameValue(e.[[Symbol]], sym) is true, return e.[[Key]].
+    if (m_is_global) {
+        // NOTE: Global symbols should always have a description string
+        VERIFY(m_description.has_value());
+        return m_description;
+    }
+
+    // 2. Assert: GlobalSymbolRegistry does not currently contain an entry for sym.
+    // 3. Return undefined.
+    return {};
+}
+
+}