Second pass idLib integration.

source/shared/idlib/containers/array.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <cassert>
+
+// All 82 recovered instantiations are exactly a fixed C array named ptr.
+template<typename type, int count>
+class idArray {
+public:
+    static_assert(count > 0, "idArray requires a positive element count");
+    type ptr[count];
+
+    constexpr int Num() const { return count; }
+    type* Ptr() { return ptr; }
+    const type* Ptr() const { return ptr; }
+    type& operator[](const int index) {
+        assert(index >= 0 && index < count); return ptr[index];
+    }
+    const type& operator[](const int index) const {
+        assert(index >= 0 && index < count); return ptr[index];
+    }
+    type* begin() { return ptr; }
+    const type* begin() const { return ptr; }
+    type* end() { return ptr + count; }
+    const type* end() const { return ptr + count; }
+};
+
+static_assert(sizeof(idArray<int, 4>) == sizeof(int) * 4,
+    "Recovered idArray ABI changed");
+