public void Create(Type type)
{
if (!type.IsArray)
{
var constructor = type.GetConstructor(Type.EmptyTypes);
if (constructor == null)
{
throw new InvalidOperationException("Missing parameterless constructor for type '" + type + "'");
}
Il.Newobj(constructor);
}
else
{
var rank = type.GetArrayRank();
if (rank == 1)
{
Il.Ldc_I4(0);
Il.Newarr(type.GetElementType());
}
else
{
var constructor = type.GetConstructor(Enumerable.Repeat(typeof(int), rank).ToArray());
if (constructor == null)
{
throw new InvalidOperationException(string.Format("Missing constructor accepting {0} integers for type '{1}'", rank, type));
}
for (int i = 0; i < rank; ++i)
{
Il.Ldc_I4(0);
}
Il.Newobj(constructor);
}
}
}
/// <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
}
/// <summary>
/// Puts the specified type code at <c>result</c>[<c>index</c>]
/// </summary>
/// <param name="typeCode">Type code to put</param>
public void WriteTypeCode(GroBufTypeCode typeCode)
{
Il.Ldc_I4(1);
AssertLength();
GoToCurrentLocation(); // stack: [&result[index]]
Il.Ldc_I4((int)typeCode); // stack: [&result[index], typeCode]
Il.Stind(typeof(byte)); // result[index] = typeCode
IncreaseIndexBy1(); // index = index + 1
}
public void LoadCompiledLambda(CompiledLambda compiledLambda)
{
if (ParsedLambda.ConstantsParameter == null)
{
throw new InvalidOperationException("There is no constants parameter. Cannot load sublambda");
}
Type temp;
var delegatesAccessor = ParsedLambda.ConstantsBuilder.MakeAccess(ParsedLambda.ConstantsParameter, ParsedLambda.DelegatesFieldId);
ExpressionEmittersCollection.Emit(delegatesAccessor, this, out temp);
Il.Ldc_I4(compiledLambda.Index);
Il.Ldelem(typeof(Delegate));
}
public void AssertTypeCode(GroBufTypeCode expectedTypeCode)
{
Il.Ldloc(TypeCode); // stack: [typeCode]
Il.Ldc_I4((int)expectedTypeCode); // stack: [typeCode, expectedTypeCode]
var okLabel = Il.DefineLabel("ok");
Il.Beq(okLabel);
SkipValue();
Il.Ret();
Il.MarkLabel(okLabel);
}
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
}
