From f6b71341feb71730e7ab416f5733b774f620374c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20Ankarstr=C3=B6m?= <john@ankarstrom.se>
Date: Fri, 26 Aug 2022 15:21:54 +0200
Subject: FileView: Add move constructor, assignment operator.

---
 c/data.h | 32 ++++++++++++++++++++++++++------
 1 file changed, 26 insertions(+), 6 deletions(-)

(limited to 'c/data.h')

diff --git a/c/data.h b/c/data.h
index 4fbf3e4..7ca5e6c 100644
--- a/c/data.h
+++ b/c/data.h
@@ -93,11 +93,29 @@ struct FileView
 				memcpy(fv+i, &t, sizeof(T));
 		}
 
-		return { filename, c };
+		return {filename, c};
 	}
 
 	FileView(FileView<T>&) = delete;
-	FileView(FileView<T>&& fv) = delete;
+	FileView<T>& operator =(const FileView<unsigned char>&) = delete;
+
+	FileView(FileView<T>&& other)
+	{
+		hf = other.hf;
+		hm = other.hf;
+		view = other.view;
+		c = other.c;
+		other.view = nullptr;
+	}
+	FileView<T>& operator =(FileView<unsigned char>&& other)
+	{
+		hf = other.hf;
+		hm = other.hf;
+		view = other.view;
+		c = other.c;
+		other.view = nullptr;
+		return *this;
+	}
 
 	FileView(const wchar_t* filename, size_t c) : c(c)
 	{
@@ -131,10 +149,12 @@ struct FileView
 
 	~FileView()
 	{
-		FlushViewOfFile(view, 0);
-		UnmapViewOfFile(view);
-		CloseHandle(hm);
-		CloseHandle(hf);
+		if (view) {
+			FlushViewOfFile(view, 0);
+			UnmapViewOfFile(view);
+			CloseHandle(hm);
+			CloseHandle(hf);
+		}
 	}
 
 	/* Access element by index, performing bounds check and, if
-- 
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