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// 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.
using System.Threading;
using System.Threading.Tasks;
using Thrift.Protocols.Entities;
namespace Thrift.Protocols.Utilities
{
// ReSharper disable once InconsistentNaming
public static class TProtocolUtil
{
public static async Task SkipAsync(TProtocol protocol, TType type, CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested)
{
await Task.FromCanceled(cancellationToken);
}
protocol.IncrementRecursionDepth();
try
{
switch (type)
{
case TType.Bool:
await protocol.ReadBoolAsync(cancellationToken);
break;
case TType.Byte:
await protocol.ReadByteAsync(cancellationToken);
break;
case TType.I16:
await protocol.ReadI16Async(cancellationToken);
break;
case TType.I32:
await protocol.ReadI32Async(cancellationToken);
break;
case TType.I64:
await protocol.ReadI64Async(cancellationToken);
break;
case TType.Double:
await protocol.ReadDoubleAsync(cancellationToken);
break;
case TType.String:
// Don't try to decode the string, just skip it.
await protocol.ReadBinaryAsync(cancellationToken);
break;
case TType.Struct:
await protocol.ReadStructBeginAsync(cancellationToken);
while (true)
{
var field = await protocol.ReadFieldBeginAsync(cancellationToken);
if (field.Type == TType.Stop)
{
break;
}
await SkipAsync(protocol, field.Type, cancellationToken);
await protocol.ReadFieldEndAsync(cancellationToken);
}
await protocol.ReadStructEndAsync(cancellationToken);
break;
case TType.Map:
var map = await protocol.ReadMapBeginAsync(cancellationToken);
for (var i = 0; i < map.Count; i++)
{
await SkipAsync(protocol, map.KeyType, cancellationToken);
await SkipAsync(protocol, map.ValueType, cancellationToken);
}
await protocol.ReadMapEndAsync(cancellationToken);
break;
case TType.Set:
var set = await protocol.ReadSetBeginAsync(cancellationToken);
for (var i = 0; i < set.Count; i++)
{
await SkipAsync(protocol, set.ElementType, cancellationToken);
}
await protocol.ReadSetEndAsync(cancellationToken);
break;
case TType.List:
var list = await protocol.ReadListBeginAsync(cancellationToken);
for (var i = 0; i < list.Count; i++)
{
await SkipAsync(protocol, list.ElementType, cancellationToken);
}
await protocol.ReadListEndAsync(cancellationToken);
break;
default:
throw new TProtocolException(TProtocolException.INVALID_DATA, "Unknown data type " + type.ToString("d"));
}
}
finally
{
protocol.DecrementRecursionDepth();
}
}
}
}
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