nothing : 'a -> 'b list * 'a
Trivial parser that parses nothing.
The parser nothing parses nothing: it returns the empty list as its parsed
item and all the input as its unparsed input.
- FAILURE CONDITIONS
This can be useful in alternations (`||') with other parsers producing a list
This is one of a suite of combinators for manipulating ``parsers''. A parser is
simply a function whose OCaml type is some instance of
:('a)list -> 'b * ('a)list. The function should take a list of objects of
type :'a (e.g. characters or tokens), parse as much of it as possible from
left to right, and return a pair consisting of the object derived from parsing
(e.g. a term or a special syntax tree) and the list of elements that were not
- SEE ALSO
++, ||, >>, a, atleast, elistof, finished, fix, leftbin, listof, many,
possibly, rightbin, some.