/// <summary>
/// Increases <c>index</c> by 8
/// </summary>
public void IncreaseIndexBy8()
{
LoadIndexByRef(); // stack: [ref index]
LoadIndex(); // stack: [ref index, index]
Il.Ldc_I4(8); // stack: [ref index, index, 8]
Il.Add(); // stack: [ref index, index + 8]
Il.Stind(typeof(int)); // index = index + 8
}
public void SkipValue()
{
LoadIndexByRef(); // stack: [ref index]
LoadIndex(); // stack: [ref index, index]
// todo: сделать switch
Il.Ldloc(TypeCode); // stack: [ref index, index, TypeCode]
Il.Ldc_I4((int)GroBufTypeCode.DateTimeOld); // stack: [ref index, index, TypeCode, GroBufTypeCode.DateTimeOld]
var notDateTimeLabel = Il.DefineLabel("notDateTime");
Il.Bne_Un(notDateTimeLabel); // if(TypeCode != GroBufTypeCode.DateTimeOld) goto notDateTime; stack: [ref index, index]
Il.Ldc_I4(8); // stack: [ref index, index, 8]
AssertLength();
GoToCurrentLocation(); // stack: [ref index, index, &data[index]]
Il.Ldc_I4(4);
Il.Add();
Il.Ldind(typeof(int)); // stack: [ref index, index, (int)(&data[index])]
Il.Ldc_I4(31); // stack: [ref index, index, (int)&data[index], 31]
Il.Shr(true); // stack: [ref index, index, (int)&data[index] >> 31]
Il.Ldc_I4(8); // stack: [ref index, index, (int)&data[index] >> 31, 8]
Il.Add(); // stack: [ref index, index, (int)&data[index] >> 31 + 8]
var increaseLabel = Il.DefineLabel("increase");
Il.Br(increaseLabel);
Il.MarkLabel(notDateTimeLabel);
LoadField(Context.Lengths);
Il.Ldloc(TypeCode); // stack: [ref index, index, lengths, typeCode]
Il.Ldelem(typeof(int)); // stack: [ref index, index, lengths[typeCode]]
Il.Dup(); // stack: [ref index, index, lengths[typeCode], lengths[typeCode]]
Il.Ldc_I4(-1); // stack: [ref index, index, lengths[typeCode], lengths[typeCode], -1]
Il.Bne_Un(increaseLabel); // if(lengths[typeCode] != -1) goto increase;
Il.Ldc_I4(4);
AssertLength();
Il.Pop(); // stack: [ref index, index]
Il.Dup(); // stack: [ref index, index, index]
LoadData(); // stack: [ref index, index, index, pinnedData]
Il.Add(); // stack: [ref index, index, index + pinnedData]
Il.Ldind(typeof(uint)); // stack: [ref index, index, *(uint*)(pinnedData + index)]
Il.Ldc_I4(4); // stack: [ref index, index, *(uint*)(pinnedData + index), 4]
Il.Add(); // stack: [ref index, *(uint*)(pinnedData + index) + 4]
Il.MarkLabel(increaseLabel);
Il.Dup(); // stack: [ref index, length, length]
AssertLength(); // stack: [ref index, length]
Il.Add(); // stack: [ref index, index + length]
Il.Stind(typeof(int)); // index = index + length
}
/// <summary>
/// Asserts that the specified number of bytes can be read from <c>data</c> starting at <c>index</c>
/// <para></para>
/// The number of bytes must be pushed onto the evaluation stack
/// </summary>
public void AssertLength()
{
LoadIndex(); // stack: [length, index]
Il.Add(); // stack: [length + index]
LoadDataLength(); // stack: [length + index, dataLength]
var bigEnoughLabel = Il.DefineLabel("bigEnough");
Il.Ble(bigEnoughLabel, true);
Il.Ldstr("Unexpected end of data");
var constructor = typeof(DataCorruptedException).GetConstructor(new[] { typeof(string) });
if (constructor == null)
{
throw new MissingConstructorException(typeof(DataCorruptedException), typeof(string));
}
Il.Newobj(constructor);
Il.Throw();
Il.MarkLabel(bigEnoughLabel);
}
/// <summary>
/// Asserts that the specified number of bytes can be written to <c>result</c> starting at <c>index</c>
/// <para></para>
/// The number of bytes must be pushed onto the evaluation stack
/// </summary>
public void AssertLength()
{
LoadIndex(); // stack: [length, index]
Il.Add(); // stack: [length + index]
LoadResultLength(); // stack: [length + index, resultLength]
var bigEnoughLabel = Il.DefineLabel("bigEnough");
Il.Ble(bigEnoughLabel, true);
Il.Ldstr("Seems like the object being serialized has been changed during serialization");
var constructor = typeof(InvalidOperationException).GetConstructor(new[] { typeof(string) });
if (constructor == null)
{
throw new MissingConstructorException(typeof(InvalidOperationException), typeof(string));
}
Il.Newobj(constructor);
Il.Throw();
Il.MarkLabel(bigEnoughLabel);
}
/// <summary>
/// Loads &<c>data</c>[<c>index</c>] onto the evaluation stack
/// </summary>
public void GoToCurrentLocation()
{
LoadData(); // stack: [pinnedData]
LoadIndex(); // stack: [pinnedData, index]
Il.Add(); // stack: [pinnedData + index]
}
/// <summary>
/// Loads &<c>result</c>[<c>index</c>] onto the evaluation stack
/// </summary>
public void GoToCurrentLocation()
{
LoadResult(); // stack: [result]
LoadIndex(); // stack: [result, index]
Il.Add(); // stack: [result + index]
}
