lib/d/src/thrift/internal/traits.d

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
module thrift.internal.traits;

import std.traits;

/**
 * Adds »nothrow« to the type of the passed function pointer/delegate, if it
 * is not already present.
 *
 * Technically, assumeNothrow just performs a cast, but using it has the
 * advantage of being explicitly about the operation that is performed.
 */
auto assumeNothrow(T)(T t) if (isFunctionPointer!T || isDelegate!T) {
  enum attrs = functionAttributes!T | FunctionAttribute.nothrow_;
  return cast(SetFunctionAttributes!(T, functionLinkage!T, attrs)) t;
}