Use RAII checks for extensions and versions

[libs/gl.git] / source / extension.h

diff --git a/source/extension.h b/source/extension.h
index aec516e2766a3bce033f3bbd0e7942e04417c587..4410cc3c316e244ec7ecd934e4668befffb6126d 100644 (file)
--- a/source/extension.h
+++ b/source/extension.h
@@ -38,11 +38,27 @@ Checks that an extension is supported and throws if it isn't.
 */
 void require_extension(const std::string &);
 
+/**
+RAII version of require_extension.  Useful as a static local variable.
+*/
+struct RequireExtension
+{
+       RequireExtension(const std::string &e) { require_extension(e); }
+};
+
 /**
 Checks that the OpenGL version is at least a.b and throws if it isn't.
 */
 void require_version(unsigned a, unsigned b);
 
+/**
+RAII version of require_version.  Useful as a static local variable.
+*/
+struct RequireVersion
+{
+       RequireVersion(unsigned a, unsigned b) { require_version(a, b); }
+};
+
 /**
 Returns the address of an extension function.
 */