/// <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>
/// Checks TypeCode and throws Exception if it is invalid
/// </summary>
public void CheckTypeCode()
{
LoadField(Context.Lengths);
Il.Ldloc(TypeCode); // stack: [lengths, typeCode]
Il.Ldelem(typeof(int)); // stack: [lengths[typeCode]]
var okLabel = Il.DefineLabel("ok");
Il.Brtrue(okLabel); // if(lengths[typeCode] != 0) goto ok;
Il.Ldstr("Unknown type code: ");
Il.Ldloca(TypeCode);
Il.Call(HackHelpers.GetMethodDefinition <int>(x => x.ToString()), typeof(int));
Il.Call(HackHelpers.GetMethodDefinition <string>(s => s + "zzz"));
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(okLabel);
}
