Piece table

A piece table is a data structure typically used to represent a series of edits on a (potentially) read-only text document. An initial reference (or 'span') to the whole of the original file is created, with subsequent inserts and deletes being created as combinations of one, two, or three references to sections of either the original document or of the spans associated with earlier inserts.

References

• http://www.cs.unm.edu/~crowley/papers/sds/node15.html#SECTION00064000000000000000