internal static Selection VisitUnion(SyntacticModel.Union union, Boolean isMemoized, ParsnipModel model)
{
var selection = new Selection(new SelectionStep[0]);
foreach (var sequence in union.Sequences)
{
var func = VisitSequence(sequence, false, model);
var step = new SelectionStep(func, interfaceMethod: null);
selection = selection.AddingStep(step);
}
return(selection);
}
public ParsnipModel Visit(SyntacticModel.Rule target)
{
var oldRule = model.Rules.First(i => i.RuleIdentifier == target.Head.RuleIdentifier.Text);
var selection = new Selection(new SelectionStep[0]);
foreach (var choice in target.Body.Choices)
{
var func = VisitChoice(choice, false, model);
var step = new SelectionStep(func, interfaceMethod: null);
selection = selection.AddingStep(step);
}
var newRule = oldRule.WithParseFunction(selection);
return(model = model.ReplacingRule(oldRule, newRule));
}
public static Selection AddingStep(this Selection selection, SelectionStep step) => new Selection(selection.Steps.Appending(step));
