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# interactive prompt for mu
recipe main [
default-space:address:array:location <- new location:type, 30:literal
switch-to-display
msg:address:array:character <- new [ready! type in an instruction, then hit enter. ctrl-d exits.
]
0:literal/real-screen <- print-string 0:literal/real-screen, msg:address:array:character
{
inst:address:array:character, 0:literal/real-keyboard, 0:literal/real-screen <- read-instruction 0:literal/real-keyboard, 0:literal/real-screen
break-unless inst:address:array:character
0:literal/real-screen <- print-string 0:literal/real-screen, inst:address:array:character
loop
}
return-to-console
]
# basic keyboard input; just text and enter
scenario read-instruction1 [
assume-screen 30:literal/width, 5:literal/height
assume-keyboard [x <- copy y
]
run [
1:address:array:character <- read-instruction keyboard:address, screen:address
2:address:array:character <- new [=> ]
print-string screen:address, 2:address:array:character
print-string screen:address, 1:address:array:character
]
screen-should-contain [
.x <- copy y .
.=> x <- copy y .
. .
]
screen-should-contain-in-color 7:literal/white, [
.x <- copy y .
.=> x <- copy y .
. .
]
]
recipe read-instruction [
default-space:address:array:location <- new location:type, 60:literal
k:address:keyboard <- next-ingredient
x:address:screen <- next-ingredient
result:address:buffer <- init-buffer 10:literal # string to maybe add to
# certain keys may trigger a change in the color
color:number <- copy 7:literal/white
# use this to track when backspace should reset color
current-color-count:number <- copy 0:literal
{
+next-character
# read character
c:character, k:address:keyboard <- wait-for-key k:address:keyboard
#? $print [next character: ], c:character, [
#? ] #? 2
# quit?
{
ctrl-d?:boolean <- equal c:character, 4:literal/ctrl-d/eof
break-unless ctrl-d?:boolean
reply 0:literal, k:address:keyboard/same-as-ingredient:0, x:address:screen/same-as-ingredient:1
}
{
null?:boolean <- equal c:character, 0:literal/null
break-unless null?:boolean
reply 0:literal, k:address:keyboard/same-as-ingredient:0, x:address:screen/same-as-ingredient:1
}
# comment?
{
comment?:boolean <- equal c:character, 35:literal/hash
break-unless comment?:boolean
color:number <- copy 4:literal/blue
# start new color count; don't need to save old color since it's guaranteed to be white
current-color-count:number <- copy 0:literal
# fall through
}
# print
print-character x:address:screen, c:character, color:number
# append
result:address:buffer <- buffer-append result:address:buffer, c:character
# backspace? decrement
{
backspace?:boolean <- equal c:character, 8:literal/backspace
break-unless backspace?:boolean
current-color-count:number <- subtract current-color-count:number, 1:literal
#? $print [decremented to ], current-color-count:number, [
#? ] #? 1
{
reset-color?:boolean <- lesser-or-equal current-color-count:number, 1:literal # last key we're about to backspace over in this iteration
break-unless reset-color?:boolean
#? $print [resetting color
#? ] #? 1
color:number <- copy 7:literal/white
current-color-count:number <- copy 0:literal # doesn't matter what count is when the color is white
}
loop +next-character:label
}
# otherwise increment
current-color-count:number <- add current-color-count:number, 1:literal
#? $print [incremented to ], current-color-count:number, [
#? ] #? 1
# done with this instruction?
done?:boolean <- equal c:character, 10:literal/newline
break-if done?:boolean
loop
}
result2:address:array:character <- buffer-to-array result:address:buffer
reply result2:address:array:character, k:address:keyboard, x:address:screen
]
scenario read-instruction-color-comment [
assume-screen 30:literal/width, 5:literal/height
assume-keyboard [# comment
]
run [
read-instruction keyboard:address, screen:address
]
screen-should-contain-in-color 4:literal/blue, [
.# comment .
. .
]
screen-should-contain-in-color 7:literal/white, [
. .
. .
]
]
scenario read-instruction-cancel-comment-on-backspace [
assume-screen 30:literal/width, 5:literal/height
assume-keyboard [#a<<z
]
# setup: replace '<'s with backspace key since we can't represent backspace in strings
run [
buf:address:array:character <- get keyboard:address:keyboard/deref, data:offset
first:address:character <- index-address buf:address:array:character/deref, 2:literal
first:address:character/deref <- copy 8:literal/backspace
second:address:character <- index-address buf:address:array:character/deref, 3:literal
second:address:character/deref <- copy 8:literal/backspace
]
run [
read-instruction keyboard:address, screen:address
]
screen-should-contain-in-color 4:literal/blue, [
. .
. .
]
screen-should-contain-in-color 7:literal/white, [
.z .
. .
]
]
scenario read-instruction-cancel-comment-on-backspace2 [
assume-screen 30:literal/width, 5:literal/height
assume-keyboard [#ab<<<z
]
# setup: replace '<'s with backspace key since we can't represent backspace in strings
run [
buf:address:array:character <- get keyboard:address:keyboard/deref, data:offset
first:address:character <- index-address buf:address:array:character/deref, 3:literal
first:address:character/deref <- copy 8:literal/backspace
second:address:character <- index-address buf:address:array:character/deref, 4:literal
second:address:character/deref <- copy 8:literal/backspace
third:address:character <- index-address buf:address:array:character/deref, 5:literal
third:address:character/deref <- copy 8:literal/backspace
]
run [
read-instruction keyboard:address, screen:address
]
screen-should-contain-in-color 4:literal/blue, [
. .
. .
]
screen-should-contain-in-color 7:literal/white, [
.z .
. .
]
]
|