internal override PartialResult PartialEval(PartialEnvironment environment)
{
bool changed = false;
PartialResult [] ra = new PartialResult [this.components.Length];
for (int i = 0; i < this.components.Length; i++)
{
ra [i] = this.components [i].PartialEval(environment);
if (ra [i].Residual != this.components [i])
{
changed = true;
}
}
if (changed)
{
SCode [] components = new SCode [ra.Length];
for (int i = 0; i < ra.Length; i++)
{
components [i] = ra [i].Residual;
}
return(new PartialResult(new Combination(components)));
}
else
{
return(new PartialResult(this));
}
}
internal override PartialResult PartialEval(PartialEnvironment environment)
{
PartialResult pred = this.predicate.PartialEval(environment);
PartialResult alt = this.alternative.PartialEval(environment);
return(new PartialResult((pred.Residual == this.predicate &&
alt.Residual == this.alternative) ? this : Disjunction.Make(pred.Residual, alt.Residual)));
}
internal override PartialResult PartialEval(PartialEnvironment environment)
{
PartialResult rator = this.components [0].PartialEval(environment);
PartialResult rand0 = this.components [1].PartialEval(environment);
PartialResult rand1 = this.components [2].PartialEval(environment);
PartialResult rand2 = this.components [3].PartialEval(environment);
return(new PartialResult(rator.Residual == this.components [0] &&
rand0.Residual == this.components [1] &&
rand1.Residual == this.components [2] &&
rand2.Residual == this.components [3] ? this : Combination3.Make(rator.Residual, rand0.Residual, rand1.Residual, rand2.Residual)));
}
internal override PartialResult PartialEval(PartialEnvironment environment)
{
PartialResult po = this.Operator.PartialEval(environment);
return(new PartialResult((po.Residual == this.Operator) ? this : Combination0.Make(po.Residual)));
}