1 ! Copyright (C) 2005, 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays ascii combinators
4 combinators.short-circuit compiler.units definitions help
5 help.markup help.topics kernel lexer math namespaces parser
6 sequences splitting strings strings.parser vocabs.parser words ;
11 :: parse-help-token ( end -- str/obj/f )
13 [ "syntax" lookup-word ]
14 [ "help.markup" lookup-word ]
15 [ dup ?last ":{[(" member-eq? [ search ] [ drop f ] if ]
17 { [ dup not ] [ drop ] }
18 { [ dup end eq? ] [ 2drop f ] }
19 { [ dup parsing-word? ] [
20 nip V{ } clone swap execute-parsing first
21 dup wrapper? [ wrapped>> \ $link swap 2array ] when ] }
25 : push-help-text ( accum sbuf obj -- accum sbuf' )
26 [ dup empty? [ >string suffix! SBUF" " clone ] unless ]
27 [ [ suffix! ] curry dip ] bi* ;
29 : help-block? ( word -- ? )
31 $description $heading $subheading $syntax
32 $class-description $error-description $var-description
33 $contract $notes $curious $deprecated $errors
34 $side-effects $content $warning $subsections $nl
35 $list $table $example $unchecked-example $code
38 : push-help-space ( accum sbuf -- accum sbuf )
41 pick ?last dup array? [ ?first ] when
44 dup last CHAR: \s eq? not
45 ] if [ CHAR: \s suffix! ] when ;
47 :: parse-help-text ( end -- seq )
48 V{ } clone SBUF" " clone [
50 end parse-help-token :> obj
53 obj string? n m - 1 > and [
54 { [ dup empty? not ] [ over ?last string? ] } 0||
55 [ \ $nl push-help-text ] when
61 dup ?first " .,;:" member? [
62 [ push-help-space ] dip
66 [ push-help-text ] bi*
70 ] loop [ >string suffix! ] unless-empty >array ; inline
72 : parse-help-values ( -- seq )
73 [ scan-token dup "}" = not ] [
75 drop \ } parse-until >array
77 ":" ?tail drop scan-object 2array
81 : code-lines ( str -- seq )
82 string-lines [ [ blank? ] trim ] map harvest ;
84 : make-example ( seq -- seq )
87 dup { [ array? ] [ length 1 > ] } 1&& [
88 dup length 1 - over [ unescape-string ] change-nth
93 : parse-help-examples ( -- seq )
94 \ } parse-until [ make-example ] { } map-as ;
96 : parse-help-code ( -- seq )
97 \ } parse-until dup { [ length 1 = ] [ first string? ] } 1&&
98 [ first code-lines ] [ >array ] if ;
100 : help-text? ( word -- ? )
102 $description $snippet $emphasis $strong $url $heading
103 $subheading $syntax $class-description
104 $error-description $var-description $contract $notes
105 $curious $deprecated $errors $side-effects $content
106 $slot $image $warning
109 : help-code? ( word -- ? )
110 { $example $unchecked-example $code } member-eq? ;
112 : help-values? ( word -- ? )
113 { $values $inputs $outputs } member-eq? ;
115 : help-examples? ( word -- ? )
116 { $examples } member-eq? ;
121 scan-object dup \ } eq? [ drop { } ] [
123 { [ dup help-text? ] [ \ } parse-help-text ] }
124 { [ dup help-code? ] [ parse-help-code ] }
125 { [ dup help-values? ] [ parse-help-values ] }
126 { [ dup help-examples? ] [ parse-help-examples ] }
127 [ \ } parse-until >array ]
132 H{ { "{" POSTPONE: HELP{ } } [
133 scan-word bootstrap-word
134 [ >link save-location ]
135 [ [ parse-array-def ] dip set-word-help ]
141 scan-object scan-object
142 \ ; parse-help-text <article>
143 over add-article >link
144 ] dip remember-definition ;
147 current-vocab scan-object >>help changed-definition ;