/// <summary>
/// Emit the end cases for a short-circuit
/// </summary>
/// <param name="info"></param>
/// <param name="ilg"></param>
/// <param name="endLabel"></param>
private static void EmitTerminals(ShortCircuitInfo info, FleeILGenerator ilg, Label endLabel)
{
// Emit the false case if it was used
if (info.HasLabel(OurFalseTerminalKey) == true)
{
Label falseLabel = info.FindLabel(OurFalseTerminalKey);
// Mark the label and note its position
ilg.MarkLabel(falseLabel);
ilg.Emit(OpCodes.Ldc_I4_0);
// If we also have a true terminal, then skip over it
if (info.HasLabel(OurTrueTerminalKey) == true)
{
// only 1-3 opcodes, always a short branch
ilg.Emit(OpCodes.Br_S, endLabel);
}
}
// Emit the true case if it was used
if (info.HasLabel(OurTrueTerminalKey) == true)
{
Label trueLabel = info.FindLabel(OurTrueTerminalKey);
// Mark the label and note its position
ilg.MarkLabel(trueLabel);
ilg.Emit(OpCodes.Ldc_I4_1);
}
}
private static Label GetLabel(object key, FleeILGenerator ilg, ShortCircuitInfo info)
{
if (info.HasLabel(key))
{
return(info.FindLabel(key));
}
return(info.AddLabel(key, ilg.DefineLabel()));
}
private static void EmitOperand(ExpressionElement operand, ShortCircuitInfo info, FleeILGenerator ilg, IServiceProvider services)
{
// Is this operand the target of a label?
if (info.HasLabel(operand) == true)
{
// Yes, so mark it
Label leftLabel = info.FindLabel(operand);
ilg.MarkLabel(leftLabel);
}
// Emit the operand
operand.Emit(ilg, services);
}
