[REBOL] Re: Speeding up code
From: greggirwin:mindspring at: 13-Feb-2002 13:30
Hi Sunanda,
<< 02 -- Help Unit-timer in the original returns an "overview" plus help for
each refinement. If Unit-timer were an object, there'd be no obvious place
for the overview. And I don't know any easy way of getting help for a
function embedded in an object -- >>
I've started playing with an idea, just a rough one at this point, to make
it easier to get help for objects. Of course it could grow from there.
The idea is to provide a virtual base object (maybe "template" is a more
REBOLish term). I'm calling the draft version lib-kernel as my first target
is function LIBraries built as objects.
>> my-lib: make lib-kernel [
[ my-prn: :print
[ my-add: func [a b][a + b]
[ ]
>> my-lib/words
== [? help words help-words my-prn my-add]
>> my-lib/help
? [
"Shows help for the object."
/with "Means you want help for one, specific word."
word "The word you want help for."
/local value
]
------------------------------------------------------------------
help [
"Shows help for the object."
/with "Means you want help for one, specific word."
word "The word you want help for."
/local value
]
------------------------------------------------------------------
words []
------------------------------------------------------------------
help-words []
------------------------------------------------------------------
my-prn native
------------------------------------------------------------------
my-add [a b]
------------------------------------------------------------------
>> my-lib/help/with 'my-add
USAGE:
MY-ADD a b
DESCRIPTION:
(undocumented)
ARGUMENTS:
a -- (Type: any)
b -- (Type: any)
;--------------------------------------------
;-- lib-kernel.r source
;--------------------------------------------
REBOL [
Title: "lib-kernel"
Author: "Gregg Irwin"
Email: [greggirwin--acm--org]
Version: 0.0.1
]
lib-kernel: make object! [
;-- This is used to make the help functions in the sub-libraries.
; They can redefine it, of course, but this gives us a base of
; functionality.
?: help: func [
"Shows help for the object."
/with "Means you want help for one, specific word."
word "The word you want help for."
/local value
][
either with [
value: in get 'self :word
either none? :value
[print rejoin [:word " is not a word in library."]]
[system/words/help :value]
][
;?? It might be better to show just the interface for each
; function and/or an overview help text for the object.
foreach word help-words [
; a)
;value: in get 'self :word
;system/words/help :value
; b)
print either function? value: get in get 'self word [
[word mold third :value]
][
[word mold :value]
]
print to-string array/initial 66 "-"
]
]
]
;-- List of words defined in the object.
words: does [next first self]
;-- By default, help will return help for all words in the object.
; You can override this to show help for just a subset of words.
help-words: :words
]
--Gregg
