Move flow and function opcodes into their own file

src/opcodes/type.cpp

@@ -0,0 +1,25 @@
+/* This file is part of the sirit project.
+ * Copyright (c) 2018 ReinUsesLisp
+ * This software may be used and distributed according to the terms of the GNU
+ * General Public License version 2 or any later version.
+ */
+
+#include "sirit/sirit.h"
+#include "opcodes.h"
+
+namespace Sirit {
+
+const Op* Module::TypeVoid() {
+    return AddDeclaration(new Op(spv::Op::OpTypeVoid, bound));
+}
+
+const Op* Module::TypeFunction(const Op* return_type, const std::vector<const Op*>& arguments) {
+    Op* type_func{new Op(spv::Op::OpTypeFunction, bound)};
+    type_func->Add(return_type);
+    for (const Op* arg : arguments) {
+        type_func->Add(arg);
+    }
+    return AddDeclaration(type_func);
+}
+
+} // namespace Sirit