Adding arena helpers

modules/common/chowdsp_core/DataStructures/chowdsp_StringHelpers.h

@@ -8,5 +8,10 @@ inline juce::String toString (const std::string_view& sv) noexcept
 {
     return juce::String::fromUTF8 (sv.data(), (int) sv.size());
 }
+
+inline std::string_view toStringView (const juce::String& str) noexcept
+{
+    return { str.toRawUTF8(), str.getNumBytesAsUTF8() };
+}
 #endif
 } // namespace chowdsp

modules/common/chowdsp_data_structures/Helpers/chowdsp_ArenaHelpers.h

@@ -0,0 +1,26 @@
+#pragma once
+
+namespace chowdsp::arena
+{
+template <typename T, typename I, typename Arena>
+std::span<T> make_span (Arena& arena, I size, size_t alignment = alignof (T))
+{
+  return { arena.template allocate<T> (size, alignment), static_cast<size_t> (size) };
+}
+
+template <typename Arena>
+std::string_view alloc_string (Arena& arena, const std::string_view& str)
+{
+  auto* data = arena.template allocate<char> (str.size());
+  std::copy (str.begin(), str.end(), data);
+  return std::string_view { data, str.size() }; // NOLINT
+};
+
+#if CHOWDSP_USING_JUCE
+template <typename Arena>
+std::string_view alloc_string (Arena& arena, const juce::String& str)
+{
+  return alloc_string (arena, toStringView (str));
+}
+#endif
+}

modules/common/chowdsp_data_structures/chowdsp_data_structures.h

@@ -46,6 +46,7 @@ BEGIN_JUCE_MODULE_DECLARATION
 #include "Allocators/chowdsp_ArenaAllocator.h"
 #include "Allocators/chowdsp_ChainedArenaAllocator.h"
 #include "Allocators/chowdsp_STLArenaAllocator.h"
+#include "Helpers/chowdsp_ArenaHelpers.h"
 
 #include "Structures/chowdsp_BucketArray.h"
 #include "Structures/chowdsp_AbstractTree.h"