ideal • runtime • patterns • base

Code shared by patterns: split, more in the futurte.

abstract class base pattern[readonly value element type]

implements validatable, pattern[element type]

extends debuggable

implement immutable list[immutable list[element type]] split(immutable list[element type] the list)

result : base list[immutable list[element type]] • new()

var index : 0

loop

match : find first(the list, index)

if match is_not null

assert match • is not empty

result • append(the list • slice(index, match • begin))

index = match • end

else

result • append(the list • skip(index))

break

return result • frozen copy()