Move CLAP version clamping to a function

src/common/serialization/clap/plugin.cpp

@@ -16,6 +16,8 @@
 
 #include "plugin.h"
 
+#include "version.h"
+
 namespace clap {
 namespace plugin {
 
@@ -46,14 +48,7 @@ descriptor::descriptor(const clap_plugin_descriptor_t& original)
 const clap_plugin_descriptor_t* descriptor::get() const {
     // This should be the minimum of yabridge's supported CLAP version and
     // the plugin's supported CLAP version
-    clap_version_t supported_clap_version = clap_version;
-    if (CLAP_VERSION_MAJOR < clap_version.major ||
-        (clap_version.major == CLAP_VERSION_MAJOR &&
-         (CLAP_VERSION_MINOR < clap_version.minor ||
-          (clap_version.minor == CLAP_VERSION_MINOR &&
-           CLAP_VERSION_REVISION < clap_version.revision)))) {
-        supported_clap_version = CLAP_VERSION;
-    }
+    clap_version_t supported_clap_version = clamp_clap_version(clap_version);
 
     // `features_ptrs` needs to be populated as an envp-style null terminated
     // array

src/common/serialization/clap/version.h

@@ -0,0 +1,37 @@
+// yabridge: a Wine plugin bridge
+// Copyright (C) 2020-2022 Robbert van der Helm
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <compare>
+
+#include <clap/version.h>
+
+/**
+ * Return the minimum of the given CLAP version and the CLAP version currently
+ * supported by the SDK.
+ */
+inline clap_version_t clamp_clap_version(clap_version_t version) {
+    if (CLAP_VERSION_MAJOR < version.major ||
+        (version.major == CLAP_VERSION_MAJOR &&
+         (CLAP_VERSION_MINOR < version.minor ||
+          (version.minor == CLAP_VERSION_MINOR &&
+           CLAP_VERSION_REVISION < version.revision)))) {
+        return CLAP_VERSION;
+    } else {
+        return version;
+    }
+}