ircd::js: Add JS::CallArgs wrapper.

include/ircd/js/args.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2016 Charybdis Development Team
+ * Copyright (C) 2016 Jason Volk <jason@zemos.net>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice is present in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+#define HAVE_IRCD_JS_ARGS_H
+
+namespace ircd {
+namespace js   {
+
+struct args
+:JS::CallArgs
+{
+	value operator[](const size_t &at) const;
+
+	args(const unsigned &argc, JS::Value *const &argv);
+};
+
+inline
+args::args(const unsigned &argc,
+           JS::Value *const &argv)
+:JS::CallArgs{JS::CallArgsFromVp(argc, argv)}
+{
+}
+
+inline value
+args::operator[](const size_t &at)
+const
+{
+	if(unlikely(length() <= at))
+		throw range_error("Missing required argument #%zu", at);
+
+	return JS::CallArgs::operator[](at);
+}
+
+} // namespace js
+} // namespace ircd

include/ircd/js/js.h

@@ -76,4 +76,5 @@ inline JSVersion version(const char *const &v)   { return JS_StringToVersion(v);
 #include "del.h"
 #include "call.h"
 #include "for_each.h"
+#include "args.h"
 #include "trap.h"