FilePosition -- the class of all file positions

Description

FilePosition -- a type of list designed to represent a position in a file.

It's implemented as a list with 3, 5 or 7 elements. The first part is the file name, then each pair is a row/column position. A single pair is a position, two form a range. The last pair is the central point of interest in that range.

Functions and methods returning a file position :

locate -- locate source code
locate(Function) -- see locate -- locate source code
locate(FunctionBody) -- see locate -- locate source code
locate(Nothing) -- see locate -- locate source code
locate(Pseudocode) -- see locate -- locate source code
locate(Sequence) -- see locate -- locate source code
locate(Symbol) -- see locate -- locate source code

Methods that use a file position :

code(FilePosition) (missing documentation)

For the programmer

The object FilePosition is a type, with ancestor classes BasicList < Thing.