32 lines
789 B
Factor
32 lines
789 B
Factor
! Copyright (C) 2006 Chris Double.
|
|
! See http://factorcode.org/license.txt for BSD license.
|
|
USING: kernel strings math sequences lazy-lists words
|
|
math.parser promises ;
|
|
IN: parser-combinators
|
|
|
|
LAZY: 'any-char' ( -- parser )
|
|
[ drop t ] satisfy ;
|
|
|
|
: 'digit' ( -- parser )
|
|
[ digit? ] satisfy [ digit> ] <@ ;
|
|
|
|
: 'integer' ( -- parser )
|
|
'digit' <!+> [ 0 [ swap 10 * + ] reduce ] <@ ;
|
|
|
|
: 'string' ( -- parser )
|
|
[ CHAR: " = ] satisfy
|
|
[ CHAR: " = not ] satisfy <*> &>
|
|
[ CHAR: " = ] satisfy <& [ >string ] <@ ;
|
|
|
|
: 'bold' ( -- parser )
|
|
"*" token
|
|
[ CHAR: * = not ] satisfy <*> [ >string ] <@ &>
|
|
"*" token <& ;
|
|
|
|
: 'italic' ( -- parser )
|
|
"_" token
|
|
[ CHAR: _ = not ] satisfy <*> [ >string ] <@ &>
|
|
"_" token <& ;
|
|
|
|
: comma-list ( element -- parser )
|
|
"," token list-of ; |