From ca40e7c7b6de98f2e229037875a47f10367d78b2 Mon Sep 17 00:00:00 2001
From: Sergey Kosarevsky <sk@linderdaum.com>
Date: Sun, 23 Jul 2023 01:29:32 -0700
Subject: [PATCH] Added lvk::Span

---
 lvk/LVK.h | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/lvk/LVK.h b/lvk/LVK.h
index 63820ad133..58f4826816 100644
--- a/lvk/LVK.h
+++ b/lvk/LVK.h
@@ -514,6 +514,50 @@ enum ShaderStage : uint8_t {
   Stage_Comp,
 };
 
+template <typename T>
+class Span {
+ public:
+  Span() = default;
+  Span(T* data, size_t numElements) : data_(data), numElements_(numElements) {}
+  const T& operator[](size_t idx) const {
+    return data_[idx];
+  };
+  T& operator[](size_t idx) {
+    return data_[idx];
+  };
+  size_t size() const {
+    return numElements_;
+  }
+  size_t size_bytes() const {
+    return sizeof(T) * numElements_;
+  }
+  bool empty() const {
+    return numElements_ == 0;
+  }
+  T* data() {
+    return data_;
+  }
+  const T* data() const {
+    return data_;
+  }
+  T* begin() {
+    return data_;
+  }
+  const T* begin() const {
+    return data_;
+  }
+  T* end() {
+    return data_ + numElements_;
+  }
+  const T* end() const {
+    return data_ + numElements_;
+  }
+
+ private:
+  T* data_ = nullptr;
+  size_t numElements_ = 0;
+};
+
 struct VertexInput final {
   enum { LVK_VERTEX_ATTRIBUTES_MAX = 16 };
   enum { LVK_VERTEX_BUFFER_MAX = 16 };