From 9fa202e6587bda29b56dffbe5f42a48b68a60862 Mon Sep 17 00:00:00 2001
From: Simon Warta <simon@warta.it>
Date: Sun, 10 Apr 2022 18:04:40 +0200
Subject: [PATCH] Add LibwasmvmVersion

---
 api/version.go      | 26 ++++++++++++++++++++++++++
 api/version_test.go | 13 +++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 api/version.go
 create mode 100644 api/version_test.go

diff --git a/api/version.go b/api/version.go
new file mode 100644
index 000000000..b0ad8baa3
--- /dev/null
+++ b/api/version.go
@@ -0,0 +1,26 @@
+package api
+
+// #include "bindings.h"
+import "C"
+
+import (
+	"fmt"
+)
+
+// LibwasmvmVersion returns the version of the loaded library
+// at runtime. This can be used to verify if the loaded version
+// matches the expected version.
+func LibwasmvmVersion() (string, error) {
+	version, err := C.version_number()
+	if err != nil {
+		return "", err
+	}
+	patch := version >> 0 & 0xFFFF
+	minor := version >> 16 & 0xFFFF
+	major := version >> 32 & 0xFFFF
+	error := version >> 48 & 0xFFFF
+	if error != 0 {
+		return "", fmt.Errorf("Error code from version_number call: %d", error)
+	}
+	return fmt.Sprintf("%d.%d.%d", major, minor, patch), nil
+}
diff --git a/api/version_test.go b/api/version_test.go
new file mode 100644
index 000000000..6760d3a2c
--- /dev/null
+++ b/api/version_test.go
@@ -0,0 +1,13 @@
+package api
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestLibwasmvmVersion(t *testing.T) {
+	version, err := LibwasmvmVersion()
+	require.NoError(t, err)
+	require.Equal(t, "1.0.0", version)
+}