/// <summary>
/// Creates a new <see cref="Pattern"/> by transforming notes in the specified pattern.
/// </summary>
/// <param name="pattern">Pattern to transform notes of.</param>
/// <param name="noteTransformation">Transformation to apply to notes of the <paramref name="pattern"/>.</param>
/// <param name="recursive">A value indicating whether nested patterns should be processed or not. The
/// default value is <c>true</c>.</param>
/// <returns><see cref="Pattern"/> that created by transforming notes of the <paramref name="pattern"/>.</returns>
/// <exception cref="ArgumentNullException">
/// <para>One of the following errors occured:</para>
/// <list type="bullet">
/// <item>
/// <description><paramref name="pattern"/> is <c>null</c>.</description>
/// </item>
/// <item>
/// <description><paramref name="noteTransformation"/> is <c>null</c>.</description>
/// </item>
/// </list>
/// </exception>
public static Pattern TransformNotes(this Pattern pattern, NoteTransformation noteTransformation, bool recursive = true)
{
ThrowIfArgument.IsNull(nameof(pattern), pattern);
ThrowIfArgument.IsNull(nameof(noteTransformation), noteTransformation);
return(TransformNotes(pattern, AllNotesSelection, noteTransformation, recursive));
}
public static Pattern TransformNotes(this Pattern pattern, NoteTransformation noteTransformation, bool recursive = true)
{
ThrowIfArgument.IsNull(nameof(pattern), pattern);
ThrowIfArgument.IsNull(nameof(noteTransformation), noteTransformation);
return(new Pattern(pattern.Actions.Select(a =>
{
var addNoteAction = a as AddNoteAction;
if (addNoteAction != null)
{
var noteDescriptor = noteTransformation(addNoteAction.NoteDescriptor);
return new AddNoteAction(noteDescriptor);
}
var addPatternAction = a as AddPatternAction;
if (addPatternAction != null && recursive)
{
return new AddPatternAction(addPatternAction.Pattern.TransformNotes(noteTransformation));
}
return a;
})
.ToList()));
}
/// <summary>
/// Creates a new <see cref="Pattern"/> by transforming notes in the specified pattern using predicate
/// to select notes to transform.
/// </summary>
/// <param name="pattern">Pattern to transform notes of.</param>
/// <param name="noteSelection">Predicate to select notes to transform.</param>
/// <param name="noteTransformation">Transformation to apply to notes of the <paramref name="pattern"/>.</param>
/// <param name="recursive">A value indicating whether nested patterns should be processed or not. The
/// default value is <c>true</c>.</param>
/// <returns><see cref="Pattern"/> that created by transforming notes of the <paramref name="pattern"/>.</returns>
/// <exception cref="ArgumentNullException">
/// <para>One of the following errors occured:</para>
/// <list type="bullet">
/// <item>
/// <description><paramref name="pattern"/> is <c>null</c>.</description>
/// </item>
/// <item>
/// <description><paramref name="noteSelection"/> is <c>null</c>.</description>
/// </item>
/// <item>
/// <description><paramref name="noteTransformation"/> is <c>null</c>.</description>
/// </item>
/// </list>
/// </exception>
public static Pattern TransformNotes(this Pattern pattern, NoteSelection noteSelection, NoteTransformation noteTransformation, bool recursive = true)
{
ThrowIfArgument.IsNull(nameof(pattern), pattern);
ThrowIfArgument.IsNull(nameof(noteSelection), noteSelection);
ThrowIfArgument.IsNull(nameof(noteTransformation), noteTransformation);
var noteIndexWrapper = new ObjectWrapper <int>();
return(TransformNotes(pattern, noteIndexWrapper, noteSelection, noteTransformation, recursive));
}
private static Pattern TransformNotes(Pattern pattern, ObjectWrapper <int> noteIndexWrapper, NoteSelection noteSelection, NoteTransformation noteTransformation, bool recursive)
{
return(new Pattern(pattern.Actions.Select(a =>
{
var addNoteAction = a as AddNoteAction;
if (addNoteAction != null && noteSelection(noteIndexWrapper.Object++, addNoteAction.NoteDescriptor))
{
var noteDescriptor = noteTransformation(addNoteAction.NoteDescriptor);
return new AddNoteAction(noteDescriptor);
}
var addPatternAction = a as AddPatternAction;
if (addPatternAction != null && recursive)
{
return new AddPatternAction(TransformNotes(addPatternAction.Pattern, noteIndexWrapper, noteSelection, noteTransformation, recursive));
}
return a.Clone();
})
.ToList()));
}
