internal SourceCodeStepRange(
List <ISourceCodeBuilderStep> list,
List <ISourceCodeBuilderStep> range,
SourceCodePlaceholder startPlaceholder,
SourceCodePlaceholder endPlaceholder)
{
OriginalList = list;
Range = range;
this.startPlaceholder = startPlaceholder;
this.endPlaceholder = endPlaceholder;
}
public static SourceCodeStepRange GetRange(
this List <ISourceCodeBuilderStep> steps,
SourceCodePlaceholder startPlaceholder,
SourceCodePlaceholder endPlaceholder)
{
int?startIndex = steps.FindIndex(startPlaceholder);
int?endIndex = steps.FindIndex(endPlaceholder);
if (!startIndex.HasValue && !endIndex.HasValue)
{
return(null);
}
int length = endIndex.Value - startIndex.Value;
if (length <= 0)
{
return(null);
}
return(new SourceCodeStepRange(steps, steps.GetRange(startIndex.Value, length), startPlaceholder, endPlaceholder));
}
internal static void AddPlaceholder(this List <ISourceCodeBuilderStep> steps, SourceCodePlaceholder placeholder)
{
steps.Add(new PlaceholderStep(placeholder));
}
public static int?FindIndex(this List <ISourceCodeBuilderStep> steps, SourceCodePlaceholder placeholder)
{
return(AsNullable(steps.FindIndex(GetPlaceholderPredicate(placeholder))));
}
private static Predicate <ISourceCodeBuilderStep> GetPlaceholderPredicate(SourceCodePlaceholder placeholder)
{
return(step => step is PlaceholderStep placeHolderStep && placeHolderStep.Placeholder == placeholder);
}
public PlaceholderStep(SourceCodePlaceholder placeholder)
{
Placeholder = placeholder;
}