private static Label GetShortCircuitLabel(AndOrElement current, ShortCircuitInfo info, FleeIlGenerator ilg)
{
var cloneOperands = (Stack)info.Operands.Clone();
var cloneOperators = (Stack)info.Operators.Clone();
current.PopRightChild(cloneOperands, cloneOperators);
Label getShortCircuitLabel;
while (cloneOperators.Count > 0)
{
var top = (AndOrElement)cloneOperators.Pop();
var flag = top.myOperation != current.myOperation;
if (flag)
{
var nextOperand = RuntimeHelpers.GetObjectValue(cloneOperands.Pop());
getShortCircuitLabel = GetLabel(RuntimeHelpers.GetObjectValue(nextOperand), ilg, info);
return(getShortCircuitLabel);
}
top.PopRightChild(cloneOperands, cloneOperators);
}
var flag2 = current.myOperation == AndOrOperation.And;
if (flag2)
{
getShortCircuitLabel = GetLabel(RuntimeHelpers.GetObjectValue(ourFalseTerminalKey), ilg, info);
return(getShortCircuitLabel);
}
getShortCircuitLabel = GetLabel(RuntimeHelpers.GetObjectValue(ourTrueTerminalKey), ilg, info);
return(getShortCircuitLabel);
}
private static void EmitBranch(AndOrElement op, FleeIlGenerator ilg, Label target, ShortCircuitInfo info)
{
var isTemp = ilg.IsTemp;
if (isTemp)
{
info.Branches.AddBranch(ilg, target);
var shortBranch = GetBranchOpcode(op, false);
ilg.Emit(shortBranch, target);
}
else
{
var longBranch = info.Branches.IsLongBranch(ilg, target);
var brOpcode = GetBranchOpcode(op, longBranch);
ilg.Emit(brOpcode, target);
}
}
private static OpCode GetBranchOpcode(AndOrElement op, bool longBranch)
{
var flag = op.myOperation == AndOrOperation.And;
OpCode getBranchOpcode;
if (flag)
{
getBranchOpcode = longBranch ? OpCodes.Brfalse : OpCodes.Brfalse_S;
}
else if (longBranch)
{
getBranchOpcode = OpCodes.Brtrue;
}
else
{
getBranchOpcode = OpCodes.Brtrue_S;
}
return(getBranchOpcode);
}
