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// **********************************************************************
//
// Copyright (c) 2003-2017 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Diagnostics;
namespace IceInternal
{
public interface IPatcher
{
void patch(Ice.Object v);
string type();
}
public abstract class Patcher : IPatcher, Ice.ReadObjectCallback
{
public Patcher(string type)
{
_type = type;
}
public abstract void patch(Ice.Object v);
public virtual string type()
{
return _type;
}
public virtual void invoke(Ice.Object v)
{
patch(v);
}
private string _type;
}
public sealed class ParamPatcher<T> : Patcher
{
public ParamPatcher(string type) : base(type)
{
}
public override void patch(Ice.Object v)
{
if(v != null && !typeof(T).IsAssignableFrom(v.GetType()))
{
IceInternal.Ex.throwUOE(type(), v.ice_id());
}
value = (T)v;
}
public T value;
}
public sealed class CustomSeqPatcher<T> : Patcher
{
public CustomSeqPatcher(string type, IEnumerable<T> seq, int index) : base(type)
{
_seq = seq;
_seqType = seq.GetType();
_index = index;
setInvokeInfo(_seqType);
}
public override void patch(Ice.Object v)
{
if(v != null && !typeof(T).IsAssignableFrom(v.GetType()))
{
IceInternal.Ex.throwUOE(type(), v.ice_id());
}
InvokeInfo info = getInvokeInfo(_seqType);
int count = info.getCount(_seq);
if(_index >= count) // Need to grow the sequence.
{
for(int i = count; i < _index; i++)
{
info.invokeAdd(_seq, default(T));
}
info.invokeAdd(_seq, (T)v);
}
else
{
info.invokeSet(_seq, _index, (T)v);
}
}
private static InvokeInfo getInvokeInfo(Type t)
{
lock(_methodTable)
{
try
{
return _methodTable[t];
}
catch(KeyNotFoundException)
{
throw new Ice.MarshalException("No invoke record for type " + t.ToString());
}
}
}
private static void setInvokeInfo(Type t)
{
lock(_methodTable)
{
if(_methodTable.ContainsKey(t))
{
return;
}
MethodInfo am = t.GetMethod("Add", _params);
if(am == null)
{
throw new Ice.MarshalException("Cannot patch a collection without an Add() method");
}
PropertyInfo pi = t.GetProperty("Item");
if(pi == null)
{
throw new Ice.MarshalException("Cannot patch a collection without an indexer");
}
MethodInfo sm = pi.GetSetMethod();
if(sm == null)
{
throw new Ice.MarshalException("Cannot patch a collection without an indexer to set a value");
}
pi = t.GetProperty("Count");
if(pi == null)
{
throw new Ice.MarshalException("Cannot patch a collection without a Count property");
}
MethodInfo cm = pi.GetGetMethod();
if(cm == null)
{
throw new Ice.MarshalException("Cannot patch a collection without a readable Count property");
}
_methodTable.Add(t, new InvokeInfo(am, sm, cm));
}
}
private class InvokeInfo
{
public InvokeInfo(MethodInfo am, MethodInfo sm, MethodInfo cm)
{
_addMethod = am;
_setMethod = sm;
_countMethod = cm;
}
internal int getCount(System.Collections.IEnumerable seq)
{
try
{
return (int)_countMethod.Invoke(seq, null);
}
catch(Exception ex)
{
throw new Ice.MarshalException("Could not read Count property during patching", ex);
}
}
internal void invokeAdd(System.Collections.IEnumerable seq, T v)
{
try
{
object[] arg = new object[] { v };
_addMethod.Invoke(seq, arg);
}
catch(Exception ex)
{
throw new Ice.MarshalException("Could not invoke Add method during patching", ex);
}
}
internal void invokeSet(System.Collections.IEnumerable seq, int index, T v)
{
try
{
object[] args = new object[] { index, v };
_setMethod.Invoke(seq, args);
}
catch(Exception ex)
{
throw new Ice.MarshalException("Could not call indexer during patching", ex);
}
}
private MethodInfo _addMethod;
private MethodInfo _setMethod;
private MethodInfo _countMethod;
}
private static Type[] _params = new Type[] { typeof(T) };
private static Dictionary<Type, InvokeInfo> _methodTable = new Dictionary<Type, InvokeInfo>();
private IEnumerable<T> _seq;
private Type _seqType;
private int _index; // The index at which to patch the sequence.
}
public sealed class ArrayPatcher<T> : Patcher
{
public ArrayPatcher(string type, T[] seq, int index) : base(type)
{
_seq = seq;
_index = index;
}
public override void patch(Ice.Object v)
{
if(v != null && !typeof(T).IsAssignableFrom(v.GetType()))
{
IceInternal.Ex.throwUOE(type(), v.ice_id());
}
_seq[_index] = (T)v;
}
private T[] _seq;
private int _index; // The index at which to patch the array.
}
public sealed class SequencePatcher<T> : Patcher
{
public SequencePatcher(string type, IceInternal.CollectionBase<T> seq, int index) : base(type)
{
_seq = seq;
_index = index;
}
public override void patch(Ice.Object v)
{
if(v != null && !typeof(T).IsAssignableFrom(v.GetType()))
{
IceInternal.Ex.throwUOE(type(), v.ice_id());
}
int count = _seq.Count;
if(_index >= count) // Need to grow the sequence.
{
for(int i = count; i < _index; i++)
{
_seq.Add(default(T));
}
_seq.Add((T)v);
}
else
{
_seq[_index] = (T)v;
}
}
private IceInternal.CollectionBase<T> _seq;
private int _index; // The index at which to patch the sequence.
}
public sealed class ListPatcher<T> : Patcher
{
public ListPatcher(string type, List<T> seq, int index) : base(type)
{
_seq = seq;
_index = index;
}
public override void patch(Ice.Object v)
{
if(v != null && !typeof(T).IsAssignableFrom(v.GetType()))
{
IceInternal.Ex.throwUOE(type(), v.ice_id());
}
int count = _seq.Count;
if(_index >= count) // Need to grow the sequence.
{
for(int i = count; i < _index; i++)
{
_seq.Add(default(T));
}
_seq.Add((T)v);
}
else
{
_seq[_index] = (T)v;
}
}
private List<T> _seq;
private int _index; // The index at which to patch the sequence.
}
}
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