/// <summary>
/// Creates a <see cref="ShapedStringSegment"/> structure with the same origin as this
/// string source but a different character range. This method only differs from
/// the <see cref="CreateShapedStringSegmentFromSubstring(Int32, Int32)"/> method if this
/// string source represents a substring of some other, larger string.
/// </summary>
/// <param name="start">The index of the first character in the created segment.</param>
/// <param name="length">The number of characters in the created segment.</param>
/// <returns>The <see cref="ShapedStringSegment"/> structure that was created.</returns>
public ShapedStringSegment CreateShapedStringSegmentFromSameOrigin(Int32 start, Int32 length)
{
switch (ValueType)
{
case StringSourceUnionValueType.String:
case StringSourceUnionValueType.StringBuilder:
case StringSourceUnionValueType.StringSegment:
throw new NotSupportedException();
case StringSourceUnionValueType.ShapedString:
return(ShapedStringSource.CreateShapedStringSegmentFromSameOrigin(start, length));
case StringSourceUnionValueType.ShapedStringBuilder:
return(ShapedStringBuilderSource.CreateShapedStringSegmentFromSameOrigin(start, length));
case StringSourceUnionValueType.ShapedStringSegment:
return(ShapedStringSegmentSource.CreateShapedStringSegmentFromSameOrigin(start, length));
default:
throw new InvalidOperationException();
}
}
/// <summary>
/// Creates a <see cref="ShapedStringSegment"/> structure that represents this string source.
/// </summary>
/// <returns>The <see cref="ShapedStringSegment"/> that was created.</returns>
public ShapedStringSegment CreateShapedStringSegment()
{
switch (ValueType)
{
case StringSourceUnionValueType.String:
case StringSourceUnionValueType.StringBuilder:
case StringSourceUnionValueType.StringSegment:
throw new NotSupportedException();
case StringSourceUnionValueType.ShapedString:
return(ShapedStringSource.CreateShapedStringSegment());
case StringSourceUnionValueType.ShapedStringBuilder:
return(ShapedStringBuilderSource.CreateShapedStringSegment());
case StringSourceUnionValueType.ShapedStringSegment:
return(ShapedStringSegmentSource.CreateShapedStringSegment());
default:
throw new InvalidOperationException();
}
}
