# Environment for learning programming using mu.
recipe main [
new-default-space
open-console
initial-recipe:address:array:character <- new [recipe new-add [
x:number <- next-ingredient
y:number <- next-ingredient
z:number <- add x:number, y:number
reply z:number
]]
initial-sandbox:address:array:character <- new [new-add 2:literal, 3:literal]
env:address:programming-environment-data <- new-programming-environment 0:literal/screen, initial-recipe:address:array:character, initial-sandbox:address:array:character
render-all 0:literal/address, env:address:programming-environment-data
event-loop 0:literal/screen, 0:literal/console, env:address:programming-environment-data
]
container programming-environment-data [
recipes:address:editor-data
recipe-warnings:address:array:character
current-sandbox:address:editor-data
sandbox:address:sandbox-data
sandbox-in-focus?:boolean # false => focus in recipes; true => focus in current-sandbox
]
recipe new-programming-environment [
new-default-space
screen:address <- next-ingredient
initial-recipe-contents:address:array:character <- next-ingredient
initial-sandbox-contents:address:array:character <- next-ingredient
width:number <- screen-width screen:address
height:number <- screen-height screen:address
# top menu
result:address:programming-environment-data <- new programming-environment-data:type
draw-horizontal screen:address, 0:literal, 0:literal/left, width:number, 32:literal/space, 0:literal/black, 238:literal/grey
button-start:number <- subtract width:number, 20:literal
button-on-screen?:boolean <- greater-or-equal button-start:number, 0:literal
assert button-on-screen?:boolean, [screen too narrow for menu]
move-cursor screen:address, 0:literal/row, button-start:number/column
run-button:address:array:character <- new [ run (F10) ]
print-string screen:address, run-button:address:array:character, 255:literal/white, 161:literal/reddish
# dotted line down the middle
divider:number, _ <- divide-with-remainder width:number, 2:literal
draw-vertical screen:address, divider:number, 1:literal/top, height:number, 9482:literal/vertical-dotted
# recipe editor on the left
recipes:address:address:editor-data <- get-address result:address:programming-environment-data/deref, recipes:offset
recipes:address:address:editor-data/deref <- new-editor initial-recipe-contents:address:array:character, screen:address, 0:literal/left, divider:number/right
# sandbox editor on the right
new-left:number <- add divider:number, 1:literal
new-right:number <- add new-left:number, 5:literal
current-sandbox:address:address:editor-data <- get-address result:address:programming-environment-data/deref, current-sandbox:offset
current-sandbox:address:address:editor-data/deref <- new-editor initial-sandbox-contents:address:array:character, screen:address, new-left:number, width:number
# initialize cursor
update-cursor screen:address, recipes:address:address:editor-data/deref, current-sandbox:address:address:editor-data/deref, 0:literal/focus-in-recipes
reply result:address:programming-environment-data
]
scenario editor-initially-prints-string-to-screen [
assume-screen 10:literal/width, 5:literal/height
run [
1:address:array:character <- new [abc]
new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
]
screen-should-contain [
. .
.abc .
. .
]
]
## In which we introduce the editor data structure, and show how it displays
## text to the screen.
container editor-data [
# editable text: doubly linked list of characters (head contains a special sentinel)
data:address:duplex-list
# location before cursor inside data
before-cursor:address:duplex-list
# raw bounds of display area on screen
# always displays from row 1 and at most until bottom of screen
left:number
right:number
# raw screen coordinates of cursor
cursor-row:number
cursor-column:number
]
# editor:address, screen:address <- new-editor s:address:array:character, screen:address, left:number, right:number
# creates a new editor widget and renders its initial appearance to screen.
# top/left/right constrain the screen area available to the new editor.
# right is exclusive.
recipe new-editor [
new-default-space
s:address:array:character <- next-ingredient
screen:address <- next-ingredient
# no clipping of bounds
left:number <- next-ingredient
right:number <- next-ingredient
right:number <- subtract right:number, 1:literal
result:address:editor-data <- new editor-data:type
# initialize screen-related fields
x:address:number <- get-address result:address:editor-data/deref, left:offset
x:address:number/deref <- copy left:number
x:address:number <- get-address result:address:editor-data/deref, right:offset
x:address:number/deref <- copy right:number
# initialize cursor
x:address:number <- get-address result:address:editor-data/deref, cursor-row:offset
x:address:number/deref <- copy 1:literal/top
x:address:number <- get-address result:address:editor-data/deref, cursor-column:offset
x:address:number/deref <- copy left:number
init:address:address:duplex-list <- get-address result:address:editor-data/deref, data:offset
init:address:address:duplex-list/deref <- push-duplex 167:literal/§, 0:literal/tail
y:address:address:duplex-list <- get-address result:address:editor-data/deref, before-cursor:offset
y:address:address:duplex-list/deref <- copy init:address:address:duplex-list/deref
# early exit if s is empty
reply-unless s:address:array:character, result:address:editor-data
len:number <- length s:address:array:character/deref
reply-unless len:number, result:address:editor-data
idx:number <- copy 0:literal
# now we can start appending the rest, character by character
curr:address:duplex-list <- copy init:address:address:duplex-list/deref
{
done?:boolean <- greater-or-equal idx:number, len:number
break-if done?:boolean
c:character <- index s:address:array:character/deref, idx:number
insert-duplex c:character, curr:address:duplex-list
# next iter
curr:address:duplex-list <- next-duplex curr:address:duplex-list
idx:number <- add idx:number, 1:literal
loop
}
# initialize cursor to top of screen
y:address:address:duplex-list <- get-address result:address:editor-data/deref, before-cursor:offset
y:address:address:duplex-list/deref <- copy init:address:address:duplex-list/deref
# initial render to screen, just for some old tests
_, screen:address <- render screen:address, result:address:editor-data
reply result:address:editor-data
]
scenario editor-initializes-without-data [
assume-screen 5:literal/width, 3:literal/height
run [
1:address:editor-data <- new-editor 0:literal/data, screen:address, 2:literal/left, 5:literal/right
2:editor-data <- copy 1:address:editor-data/deref
]
memory-should-contain [
# 2 (data) <- just the § sentinel
# 3 (before cursor) <- the § sentinel
4 <- 2 # left
5 <- 4 # right (inclusive)
6 <- 1 # cursor row
7 <- 2 # cursor column
]
screen-should-contain [
. .
. .
. .
]
]
# bottom:number, screen:address <- render screen:address, editor:address:editor-data
recipe render [
new-default-space
screen:address <- next-ingredient
editor:address:editor-data <- next-ingredient
reply-unless editor:address:editor-data, 1:literal/top, screen:address/same-as-ingredient:0
left:number <- get editor:address:editor-data/deref, left:offset
screen-height:number <- screen-height screen:address
right:number <- get editor:address:editor-data/deref, right:offset
hide-screen screen:address
# traversing editor
curr:address:duplex-list <- get editor:address:editor-data/deref, data:offset
prev:address:duplex-list <- copy curr:address:duplex-list
curr:address:duplex-list <- next-duplex curr:address:duplex-list
# traversing screen
row:number <- copy 1:literal/top
column:number <- copy left:number
cursor-row:address:number <- get-address editor:address:editor-data/deref, cursor-row:offset
cursor-column:address:number <- get-address editor:address:editor-data/deref, cursor-column:offset
before-cursor:address:address:duplex-list <- get-address editor:address:editor-data/deref, before-cursor:offset
move-cursor screen:address, row:number, column:number
{
+next-character
break-unless curr:address:duplex-list
off-screen?:boolean <- greater-or-equal row:number, screen-height:number
break-if off-screen?:boolean
# update editor-data.before-cursor
# Doing so at the start of each iteration ensures it stays one step behind
# the current character.
{
at-cursor-row?:boolean <- equal row:number, cursor-row:address:number/deref
break-unless at-cursor-row?:boolean
at-cursor?:boolean <- equal column:number, cursor-column:address:number/deref
break-unless at-cursor?:boolean
before-cursor:address:address:duplex-list/deref <- prev-duplex curr:address:duplex-list
}
c:character <- get curr:address:duplex-list/deref, value:offset
{
# newline? move to left rather than 0
newline?:boolean <- equal c:character, 10:literal/newline
break-unless newline?:boolean
# adjust cursor if necessary
{
at-cursor-row?:boolean <- equal row:number, cursor-row:address:number/deref
break-unless at-cursor-row?:boolean
left-of-cursor?:boolean <- lesser-than column:number, cursor-column:address:number/deref
break-unless left-of-cursor?:boolean
cursor-column:address:number/deref <- copy column:number
before-cursor:address:address:duplex-list/deref <- prev-duplex curr:address:duplex-list
}
# clear rest of line in this window
clear-line-delimited screen:address, column:number, right:number
# skip to next line
row:number <- add row:number, 1:literal
column:number <- copy left:number
move-cursor screen:address, row:number, column:number
curr:address:duplex-list <- next-duplex curr:address:duplex-list
prev:address:duplex-list <- next-duplex prev:address:duplex-list
loop +next-character:label
}
{
# at right? wrap. even if there's only one more letter left; we need
# room for clicking on the cursor after it.
at-right?:boolean <- equal column:number, right:number
break-unless at-right?:boolean
# print wrap icon
print-character screen:address, 8617:literal/loop-back-to-left, 245:literal/grey
column:number <- copy left:number
row:number <- add row:number, 1:literal
move-cursor screen:address, row:number, column:number
# don't increment curr
loop +next-character:label
}
print-character screen:address, c:character
curr:address:duplex-list <- next-duplex curr:address:duplex-list
prev:address:duplex-list <- next-duplex prev:address:duplex-list
column:number <- add column:number, 1:literal
loop
}
# is cursor to the right of the last line? move to end
{
at-cursor-row?:boolean <- equal row:number, cursor-row:address:number/deref
cursor-outside-line?:boolean <- lesser-or-equal column:number, cursor-column:address:number/deref
before-cursor-on-same-line?:boolean <- and at-cursor-row?:boolean, cursor-outside-line?:boolean
above-cursor-row?:boolean <- lesser-than row:number, cursor-row:address:number/deref
before-cursor?:boolean <- or before-cursor-on-same-line?:boolean, above-cursor-row?:boolean
break-unless before-cursor?:boolean
cursor-row:address:number/deref <- copy row:number
cursor-column:address:number/deref <- copy column:number
# line not wrapped but cursor outside bounds? wrap cursor
{
too-far-right?:boolean <- greater-than cursor-column:address:number/deref, right:number
break-unless too-far-right?:boolean
cursor-column:address:number/deref <- copy left:number
cursor-row:address:number/deref <- add cursor-row:address:number/deref, 1:literal
above-screen-bottom?:boolean <- lesser-than cursor-row:address:number/deref, screen-height:number
assert above-screen-bottom?:boolean, [unimplemented: wrapping cursor past bottom of screen]
}
before-cursor:address:address:duplex-list/deref <- copy prev:address:duplex-list
}
# clear rest of current line
clear-line-delimited screen:address, column:number, right:number
reply row:number, screen:address/same-as-ingredient:0
]
# row:number, screen:address <- render-string screen:address, s:address:array:character, left:number, right:number, color:number, row:number
# print a string 's' to 'editor' in 'color' starting at 'row'
# leave cursor at start of next line
recipe render-string [
new-default-space
screen:address <- next-ingredient
s:address:array:character <- next-ingredient
left:number <- next-ingredient
right:number <- next-ingredient
color:number <- next-ingredient
row:number <- next-ingredient
row:number <- add row:number, 1:literal
reply-unless s:address:array:character, row:number/same-as-ingredient:5, screen:address/same-as-ingredient:0
column:number <- copy left:number
move-cursor screen:address, row:number, column:number
screen-height:number <- screen-height screen:address
i:number <- copy 0:literal
len:number <- length s:address:array:character/deref
{
+next-character
done?:boolean <- greater-or-equal i:number, len:number
break-if done?:boolean
done?:boolean <- greater-or-equal row:number, screen-height:number
break-if done?:boolean
c:character <- index s:address:array:character/deref, i:number
{
# at right? wrap.
at-right?:boolean <- equal column:number, right:number
break-unless at-right?:boolean
# print wrap icon
print-character screen:address, 8617:literal/loop-back-to-left, 245:literal/grey
column:number <- copy left:number
row:number <- add row:number, 1:literal
move-cursor screen:address, row:number, column:number
loop +next-character:label # retry i
}
i:number <- add i:number, 1:literal
{
# newline? move to left rather than 0
newline?:boolean <- equal c:character, 10:literal/newline
break-unless newline?:boolean
# clear rest of line in this window
{
done?:boolean <- greater-than column:number, right:number
break-if done?:boolean
print-character screen:address, 32:literal/space
column:number <- add column:number, 1:literal
loop
}
row:number <- add row:number, 1:literal
column:number <- copy left:number
move-cursor screen:address, row:number, column:number
loop +next-character:label
}
print-character screen:address, c:character, color:number
column:number <- add column:number, 1:literal
loop
}
{
# clear rest of current line
line-done?:boolean <- greater-than column:number, right:number
break-if line-done?:boolean
print-character screen:address, 32:literal/space
column:number <- add column:number, 1:literal
loop
}
reply row:number/same-as-ingredient:5, screen:address/same-as-ingredient:0
]
recipe clear-line-delimited [
new-default-space
screen:address <- next-ingredient
left:number <- next-ingredient
right:number <- next-ingredient
column:number <- copy left:number
{
done?:boolean <- greater-than column:number, right:number
break-if done?:boolean
print-character screen:address, 32:literal/space
column:number <- add column:number, 1:literal
loop
}
]
scenario editor-initially-prints-multiple-lines [
assume-screen 5:literal/width, 5:literal/height
run [
s:address:array:character <- new [abc
def]
new-editor s:address:array:character, screen:address, 0:literal/left, 5:literal/right
]
screen-should-contain [
. .
.abc .
.def .
. .
]
]
scenario editor-initially-handles-offsets [
assume-screen 5:literal/width, 5:literal/height
run [
s:address:array:character <- new [abc]
new-editor s:address:array:character, screen:address, 1:literal/left, 5:literal/right
]
screen-should-contain [
. .
. abc .
. .
]
]
scenario editor-initially-prints-multiple-lines-at-offset [
assume-screen 5:literal/width, 5:literal/height
run [
s:address:array:character <- new [abc
def]
new-editor s:address:array:character, screen:address, 1:literal/left, 5:literal/right
]
screen-should-contain [
. .
. abc .
. def .
. .
]
]
scenario editor-initially-wraps-long-lines [
assume-screen 5:literal/width, 5:literal/height
run [
s:address:array:character <- new [abc def]
new-editor s:address:array:character, screen:address, 0:literal/left, 5:literal/right
]
screen-should-contain [
. .
.abc ↩.
.def .
. .
]
screen-should-contain-in-color, 245:literal/grey [
. .
. ↩.
. .
. .
]
]
scenario editor-initially-wraps-barely-long-lines [
assume-screen 5:literal/width, 5:literal/height
run [
s:address:array:character <- new [abcde]
new-editor s:address:array:character, screen:address, 0:literal/left, 5:literal/right
]
# still wrap, even though the line would fit. We need room to click on the
# end of the line
screen-should-contain [
. .
.abcd↩.
.e .
. .
]
screen-should-contain-in-color, 245:literal/grey [
. .
. ↩.
. .
. .
]
]
scenario editor-initializes-empty-text [
assume-screen 5:literal/width, 5:literal/height
run [
1:address:array:character <- new []
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
screen-should-contain [
. .
. .
. .
]
memory-should-contain [
3 <- 1 # cursor row
4 <- 0 # cursor column
]
]
## handling events from the keyboard, mouse, touch screen, ...
recipe event-loop [
new-default-space
screen:address <- next-ingredient
console:address <- next-ingredient
env:address:programming-environment-data <- next-ingredient
recipes:address:editor-data <- get env:address:programming-environment-data/deref, recipes:offset
current-sandbox:address:editor-data <- get env:address:programming-environment-data/deref, current-sandbox:offset
sandbox-in-focus?:address:boolean <- get-address env:address:programming-environment-data/deref, sandbox-in-focus?:offset
{
# looping over each (keyboard or touch) event as it occurs
+next-event
e:event, console:address, found?:boolean, quit?:boolean <- read-event console:address
loop-unless found?:boolean
break-if quit?:boolean # only in tests
trace [app], [next-event]
# check for global events that will trigger regardless of which editor has focus
{
k:address:number <- maybe-convert e:event, keycode:variant
break-unless k:address:number
# F10? load all code and run all sandboxes.
{
do-run?:boolean <- equal k:address:number/deref, 65526:literal/F10
break-unless do-run?:boolean
run-sandboxes env:address:programming-environment-data
jump +continue:label
}
}
# 'touch' event - send to both editors
{
t:address:touch-event <- maybe-convert e:event, touch:variant
break-unless t:address:touch-event
_ <- move-cursor-in-editor screen:address, recipes:address:editor-data, t:address:touch-event/deref
sandbox-in-focus?:address:boolean/deref <- move-cursor-in-editor screen:address, current-sandbox:address:editor-data, t:address:touch-event/deref
jump +continue:label
}
# if it's not global, send to appropriate editor
{
{
break-if sandbox-in-focus?:address:boolean/deref
handle-event screen:address, console:address, recipes:address:editor-data, e:event
}
{
break-unless sandbox-in-focus?:address:boolean/deref
handle-event screen:address, console:address, current-sandbox:address:editor-data, e:event
}
}
+continue
# if no more events currently left to process, render
# todo: test this
{
more-events?:boolean <- has-more-events? console:address
break-if more-events?:boolean
render-all screen:address, env:address:programming-environment-data
}
loop
}
]
# helper for testing a single editor
recipe editor-event-loop [
new-default-space
screen:address <- next-ingredient
console:address <- next-ingredient
editor:address:editor-data <- next-ingredient
{
# looping over each (keyboard or touch) event as it occurs
+next-event
e:event, console:address, found?:boolean, quit?:boolean <- read-event console:address
loop-unless found?:boolean
break-if quit?:boolean # only in tests
trace [app], [next-event]
# 'touch' event - send to both editors
{
t:address:touch-event <- maybe-convert e:event, touch:variant
break-unless t:address:touch-event
move-cursor-in-editor screen:address, editor:address:editor-data, t:address:touch-event/deref
jump +continue:label
}
# other events - send to appropriate editor
handle-event screen:address, console:address, editor:address:editor-data, e:event
+continue
row:number, screen:address <- render screen:address, editor:address:editor-data
# clear next line, in case we just processed a backspace
left:number <- get editor:address:editor-data/deref, left:offset
right:number <- get editor:address:editor-data/deref, right:offset
row:number <- add row:number, 1:literal
move-cursor screen:address, row:number, left:number
clear-line-delimited screen:address, left:number, right:number
loop
}
]
recipe handle-event [
new-default-space
screen:address <- next-ingredient
console:address <- next-ingredient
editor:address:editor-data <- next-ingredient
e:event <- next-ingredient
reply-unless editor:address:editor-data
# typing a character
{
c:address:character <- maybe-convert e:event, text:variant
break-unless c:address:character
# unless it's a backspace
{
backspace?:boolean <- equal c:address:character/deref, 8:literal/backspace
break-unless backspace?:boolean
delete-before-cursor editor:address:editor-data
reply
}
insert-at-cursor editor:address:editor-data, c:address:character/deref, screen:address
reply
}
# otherwise it's a special key to control the editor
k:address:number <- maybe-convert e:event, keycode:variant
assert k:address:number, [event was of unknown type; neither keyboard nor mouse]
d:address:duplex-list <- get editor:address:editor-data/deref, data:offset
before-cursor:address:address:duplex-list <- get-address editor:address:editor-data/deref, before-cursor:offset
cursor-row:address:number <- get-address editor:address:editor-data/deref, cursor-row:offset
cursor-column:address:number <- get-address editor:address:editor-data/deref, cursor-column:offset
screen-height:number <- screen-height screen:address
left:number <- get editor:address:editor-data/deref, left:offset
right:number <- get editor:address:editor-data/deref, right:offset
# arrows; update cursor-row and cursor-column, leave before-cursor to 'render'.
# right arrow
{
move-to-next-character?:boolean <- equal k:address:number/deref, 65514:literal/right-arrow
break-unless move-to-next-character?:boolean
# if not at end of text
old-cursor:address:duplex-list <- next-duplex before-cursor:address:address:duplex-list/deref
break-unless old-cursor:address:duplex-list
# scan to next character
before-cursor:address:address:duplex-list/deref <- copy old-cursor:address:duplex-list
# if crossed a newline, move cursor to start of next row
{
old-cursor-character:character <- get before-cursor:address:address:duplex-list/deref/deref, value:offset
was-at-newline?:boolean <- equal old-cursor-character:character, 10:literal/newline
break-unless was-at-newline?:boolean
cursor-row:address:number/deref <- add cursor-row:address:number/deref, 1:literal
cursor-column:address:number/deref <- copy left:number
# todo: what happens when cursor is too far down?
screen-height:number <- screen-height screen:address
above-screen-bottom?:boolean <- lesser-than cursor-row:address:number/deref, screen-height:number
assert above-screen-bottom?:boolean, [unimplemented: moving past bottom of screen]
reply
}
# if the line wraps, move cursor to start of next row
{
# if we're at the column just before the wrap indicator
wrap-column:number <- subtract right:number, 1:literal
at-wrap?:boolean <- equal cursor-column:address:number/deref, wrap-column:number
break-unless at-wrap?:boolean
# and if next character isn't newline
new-cursor:address:duplex-list <- next-duplex old-cursor:address:duplex-list
break-unless new-cursor:address:duplex-list
next-character:character <- get new-cursor:address:duplex-list/deref, value:offset
newline?:boolean <- equal next-character:character, 10:literal/newline
break-if newline?:boolean
cursor-row:address:number/deref <- add cursor-row:address:number/deref, 1:literal
cursor-column:address:number/deref <- copy left:number
# todo: what happens when cursor is too far down?
above-screen-bottom?:boolean <- lesser-than cursor-row:address:number/deref, screen-height:number
assert above-screen-bottom?:boolean, [unimplemented: moving past bottom of screen]
reply
}
# otherwise move cursor one character right
cursor-column:address:number/deref <- add cursor-column:address:number/deref, 1:literal
}
# left arrow
{
move-to-previous-character?:boolean <- equal k:address:number/deref, 65515:literal/left-arrow
break-unless move-to-previous-character?:boolean
#? trace [app], [left arrow] #? 1
# if not at start of text (before-cursor at § sentinel)
prev:address:duplex-list <- prev-duplex before-cursor:address:address:duplex-list/deref
break-unless prev:address:duplex-list
# if cursor not at left margin, move one character left
{
at-left-margin?:boolean <- equal cursor-column:address:number/deref, 0:literal
break-if at-left-margin?:boolean
#? trace [app], [decrementing] #? 1
cursor-column:address:number/deref <- subtract cursor-column:address:number/deref, 1:literal
reply
}
# if at left margin, there's guaranteed to be a previous line, since we're
# not at start of text
{
# if before-cursor is at newline, figure out how long the previous line is
prevc:character <- get before-cursor:address:address:duplex-list/deref/deref, value:offset
previous-character-is-newline?:boolean <- equal prevc:character, 10:literal/newline
break-unless previous-character-is-newline?:boolean
#? trace [app], [previous line] #? 1
# compute length of previous line
end-of-line:number <- previous-line-length before-cursor:address:address:duplex-list/deref, d:address:duplex-list
cursor-row:address:number/deref <- subtract cursor-row:address:number/deref, 1:literal
cursor-column:address:number/deref <- copy end-of-line:number
reply
}
# if before-cursor is not at newline, we're just at a wrapped line
assert cursor-row:address:number/deref, [unimplemented: moving cursor above top of screen]
cursor-row:address:number/deref <- subtract cursor-row:address:number/deref, 1:literal
cursor-column:address:number/deref <- subtract right:number, 1:literal # leave room for wrap icon
}
# down arrow
{
move-to-next-line?:boolean <- equal k:address:number/deref, 65516:literal/down-arrow
break-unless move-to-next-line?:boolean
# todo: support scrolling
already-at-bottom?:boolean <- greater-or-equal cursor-row:address:number/deref, screen-height:number
break-if already-at-bottom?:boolean
#? $print [moving down
#? ] #? 1
cursor-row:address:number/deref <- add cursor-row:address:number/deref, 1:literal
# that's it; render will adjust cursor-column as necessary
}
# up arrow
{
move-to-previous-line?:boolean <- equal k:address:number/deref, 65517:literal/up-arrow
break-unless move-to-previous-line?:boolean
# todo: support scrolling
already-at-top?:boolean <- lesser-or-equal cursor-row:address:number/deref, 1:literal/top
break-if already-at-top?:boolean
#? $print [moving up
#? ] #? 1
cursor-row:address:number/deref <- subtract cursor-row:address:number/deref, 1:literal
# that's it; render will adjust cursor-column as necessary
}
]
# process click, return if it was on current editor
# todo: ignores menu bar (for now just displays shortcuts)
recipe move-cursor-in-editor [
new-default-space
screen:address <- next-ingredient
editor:address:editor-data <- next-ingredient
t:touch-event <- next-ingredient
reply-unless editor:address:editor-data, 0:literal/false
click-column:number <- get t:touch-event, column:offset
left:number <- get editor:address:editor-data/deref, left:offset
too-far-left?:boolean <- lesser-than click-column:number, left:number
reply-if too-far-left?:boolean, 0:literal/false
right:number <- get editor:address:editor-data/deref, right:offset
too-far-right?:boolean <- greater-than click-column:number, right:number
reply-if too-far-right?:boolean, 0:literal/false
# update cursor
cursor-row:address:number <- get-address editor:address:editor-data/deref, cursor-row:offset
cursor-row:address:number/deref <- get t:touch-event, row:offset
cursor-column:address:number <- get-address editor:address:editor-data/deref, cursor-column:offset
cursor-column:address:number/deref <- get t:touch-event, column:offset
render screen:address, editor:address:editor-data
# gain focus
reply 1:literal/true
]
recipe insert-at-cursor [
new-default-space
editor:address:editor-data <- next-ingredient
c:character <- next-ingredient
screen:address <- next-ingredient
#? $print [insert ], c:character, [
#? ] #? 1
before-cursor:address:address:duplex-list <- get-address editor:address:editor-data/deref, before-cursor:offset
d:address:duplex-list <- get editor:address:editor-data/deref, data:offset
insert-duplex c:character, before-cursor:address:address:duplex-list/deref
before-cursor:address:address:duplex-list/deref <- next-duplex before-cursor:address:address:duplex-list/deref
cursor-row:address:number <- get-address editor:address:editor-data/deref, cursor-row:offset
cursor-column:address:number <- get-address editor:address:editor-data/deref, cursor-column:offset
left:number <- get editor:address:editor-data/deref, left:offset
right:number <- get editor:address:editor-data/deref, right:offset
# update cursor: if newline, move cursor to start of next line
# todo: bottom of screen
{
newline?:boolean <- equal c:character, 10:literal/newline
break-unless newline?:boolean
cursor-row:address:number/deref <- add cursor-row:address:number/deref, 1:literal
cursor-column:address:number/deref <- copy left:number
reply
}
# if the line wraps at the cursor, move cursor to start of next row
{
# if we're at the column just before the wrap indicator
wrap-column:number <- subtract right:number, 1:literal
#? $print [wrap? ], cursor-column:address:number/deref, [ vs ], wrap-column:number, [
#? ] #? 1
at-wrap?:boolean <- greater-or-equal cursor-column:address:number/deref, wrap-column:number
break-unless at-wrap?:boolean
#? $print [wrap!
#? ] #? 1
cursor-column:address:number/deref <- subtract cursor-column:address:number/deref, wrap-column:number
cursor-row:address:number/deref <- add cursor-row:address:number/deref, 1:literal
# todo: what happens when cursor is too far down?
screen-height:number <- screen-height screen:address
above-screen-bottom?:boolean <- lesser-than cursor-row:address:number/deref, screen-height:number
assert above-screen-bottom?:boolean, [unimplemented: typing past bottom of screen]
#? $print [return
#? ] #? 1
reply
}
# otherwise move cursor right
cursor-column:address:number/deref <- add cursor-column:address:number/deref, 1:literal
]
recipe delete-before-cursor [
new-default-space
editor:address:editor-data <- next-ingredient
before-cursor:address:address:duplex-list <- get-address editor:address:editor-data/deref, before-cursor:offset
d:address:duplex-list <- get editor:address:editor-data/deref, data:offset
# unless already at start
at-start?:boolean <- equal before-cursor:address:address:duplex-list/deref, d:address:duplex-list
reply-if at-start?:boolean
# delete character
prev:address:duplex-list <- prev-duplex before-cursor:address:address:duplex-list/deref
remove-duplex before-cursor:address:address:duplex-list/deref
# update cursor
before-cursor:address:address:duplex-list/deref <- copy prev:address:duplex-list
cursor-column:address:number <- get-address editor:address:editor-data/deref, cursor-column:offset
cursor-column:address:number/deref <- subtract cursor-column:address:number/deref, 1:literal
#? $print [delete-before-cursor: ], cursor-column:address:number/deref, [
#? ] #? 1
]
# takes a pointer 'curr' into the doubly-linked list and its sentinel, counts
# the length of the previous line before the 'curr' pointer.
recipe previous-line-length [
new-default-space
curr:address:duplex-list <- next-ingredient
start:address:duplex-list <- next-ingredient
result:number <- copy 0:literal
reply-unless curr:address:duplex-list, result:number
at-start?:boolean <- equal curr:address:duplex-list, start:address:duplex-list
reply-if at-start?:boolean, result:number
{
curr:address:duplex-list <- prev-duplex curr:address:duplex-list
break-unless curr:address:duplex-list
at-start?:boolean <- equal curr:address:duplex-list, start:address:duplex-list
break-if at-start?:boolean
c:character <- get curr:address:duplex-list/deref, value:offset
at-newline?:boolean <- equal c:character 10:literal/newline
break-if at-newline?:boolean
result:number <- add result:number, 1:literal
loop
}
reply result:number
]
recipe render-all [
new-default-space
screen:address <- next-ingredient
env:address:programming-environment-data <- next-ingredient
recipes:address:editor-data <- get env:address:programming-environment-data/deref, recipes:offset
current-sandbox:address:editor-data <- get env:address:programming-environment-data/deref, current-sandbox:offset
sandbox-in-focus?:boolean <- get env:address:programming-environment-data/deref, sandbox-in-focus?:offset
# render recipes, along with any warnings
left:number <- get recipes:address:editor-data/deref, left:offset
right:number <- get recipes:address:editor-data/deref, right:offset
row:number, screen:address <- render screen:address, recipes:address:editor-data
recipe-warnings:address:array:character <- get env:address:programming-environment-data/deref, recipe-warnings:offset
{
break-unless recipe-warnings:address:array:character
row:number, screen:address <- render-string screen:address, recipe-warnings:address:array:character, left:number, right:number, 1:literal/red, row:number
}
{
# no warnings? move to next lin
break-if recipe-warnings:address:array:character
row:number <- add row:number, 1:literal
}
# draw dotted line after recipes
draw-horizontal screen:address, row:number, left:number, right:number, 9480:literal/horizontal-dotted
# clear next line, in case we just processed a backspace
row:number <- add row:number, 1:literal
move-cursor screen:address, row:number, left:number
clear-line-delimited screen:address, left:number, right:number
# render sandboxes along with warnings for each
left:number <- get current-sandbox:address:editor-data/deref, left:offset
right:number <- get current-sandbox:address:editor-data/deref, right:offset
row:number, screen:address <- render screen:address, current-sandbox:address:editor-data
row:number <- add row:number, 1:literal
draw-horizontal screen:address, row:number, left:number, right:number, 9473:literal/horizontal-double
sandbox:address:sandbox-data <- get env:address:programming-environment-data/deref, sandbox:offset
row:number, screen:address <- render-sandboxes screen:address, sandbox:address:sandbox-data, left:number, right:number, row:number
# clear next line, in case we just processed a backspace
row:number <- add row:number, 1:literal
move-cursor screen:address, row:number, left:number
clear-line-delimited screen:address, left:number, right:number
update-cursor screen:address, recipes:address:editor-data, current-sandbox:address:editor-data, sandbox-in-focus?:boolean
show-screen screen:address
reply screen:address/same-as-ingredient:0
]
recipe render-sandboxes [
new-default-space
screen:address <- next-ingredient
sandbox:address:sandbox-data <- next-ingredient
left:number <- next-ingredient
right:number <- next-ingredient
row:number <- next-ingredient
reply-unless sandbox:address:sandbox-data, row:number/same-as-ingredient:4, screen:address/same-as-ingredient:0
screen-height:number <- screen-width screen:address
at-bottom?:boolean <- greater-or-equal row:number screen-height:number
reply-if at-bottom?:boolean, row:number/same-as-ingredient:4, screen:address/same-as-ingredient:0
# render sandbox contents
sandbox-data:address:array:character <- get sandbox:address:sandbox-data/deref, data:offset
row:number, screen:address <- render-string screen:address, sandbox-data:address:array:character, left:number, right:number, 7:literal/white, row:number
# render sandbox warnings or response, in that order
sandbox-response:address:array:character <- get sandbox:address:sandbox-data/deref, response:offset
sandbox-warnings:address:array:character <- get sandbox:address:sandbox-data/deref, warnings:offset
{
break-unless sandbox-warnings:address:array:character
row:number, screen:address <- render-string screen:address, sandbox-warnings:address:array:character, left:number, right:number, 1:literal/red, row:number
}
{
break-if sandbox-warnings:address:array:character
row:number, screen:address <- render-string screen:address, sandbox-response:address:array:character, left:number, right:number, 245:literal/grey, row:number
}
# draw solid line after sandbox
draw-horizontal screen:address, row:number, left:number, right:number, 9473:literal/horizontal-double
# draw next sandbox
next-sandbox:address:sandbox-data <- get sandbox:address:sandbox-data/deref, next-sandbox:offset
row:number, screen:address <- render-sandboxes screen:address, next-sandbox:address:sandbox-data, left:number, right:number, row:number
reply row:number/same-as-ingredient:4, screen:address/same-as-ingredient:0
]
recipe update-cursor [
new-default-space
screen:address <- next-ingredient
recipes:address:editor-data <- next-ingredient
current-sandbox:address:editor-data <- next-ingredient
sandbox-in-focus?:boolean <- next-ingredient
{
break-if sandbox-in-focus?:boolean
#? $print [recipes in focus
#? ] #? 1
cursor-row:number <- get recipes:address:editor-data/deref, cursor-row:offset
cursor-column:number <- get recipes:address:editor-data/deref, cursor-column:offset
}
{
break-unless sandbox-in-focus?:boolean
#? $print [sandboxes in focus
#? ] #? 1
cursor-row:number <- get current-sandbox:address:editor-data/deref, cursor-row:offset
cursor-column:number <- get current-sandbox:address:editor-data/deref, cursor-column:offset
}
move-cursor screen:address, cursor-row:number, cursor-column:number
]
scenario editor-handles-empty-event-queue [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console []
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abc .
. .
]
]
scenario editor-handles-mouse-clicks [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 1, 1 # on the 'b'
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
screen-should-contain [
. .
.abc .
. .
]
memory-should-contain [
3 <- 1 # cursor is at row 0..
4 <- 1 # ..and column 1
]
]
scenario editor-handles-mouse-clicks-outside-text [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 1, 7 # last line, to the right of text
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
3 <- 1 # cursor row
4 <- 3 # cursor column
]
]
scenario editor-handles-mouse-clicks-outside-text-2 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
def]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 1, 7 # interior line, to the right of text
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
3 <- 1 # cursor row
4 <- 3 # cursor column
]
]
scenario editor-handles-mouse-clicks-outside-text-3 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
def]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 3, 7 # below text
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
3 <- 2 # cursor row
4 <- 3 # cursor column
]
]
scenario editor-handles-mouse-clicks-outside-column [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
# editor occupies only left half of screen
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
assume-console [
# click on right half of screen
left-click 3, 8
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
screen-should-contain [
. .
.abc .
. .
]
memory-should-contain [
3 <- 1 # no change to cursor row
4 <- 0 # ..or column
]
]
scenario editor-inserts-characters-into-empty-editor [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new []
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
assume-console [
type [abc]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abc .
. .
]
]
scenario editor-inserts-characters-at-cursor [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
type [0]
left-click 1, 2
type [d]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.0adbc .
. .
]
]
scenario editor-inserts-characters-at-cursor-2 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 1, 5 # right of last line
type [d] # should append
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abcd .
. .
]
]
scenario editor-inserts-characters-at-cursor-3 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 3, 5 # below all text
type [d] # should append
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abcd .
. .
]
]
scenario editor-inserts-characters-at-cursor-4 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
d]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 3, 5 # below all text
type [e] # should append
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abc .
.de .
. .
]
]
scenario editor-inserts-characters-at-cursor-5 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
d]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 3, 5 # below all text
type [ef] # should append multiple characters in order
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abc .
.def .
. .
]
]
scenario editor-wraps-line-on-insert [
assume-screen 5:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
# type a letter
assume-console [
type [e]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
# no wrap yet
screen-should-contain [
. .
.eabc .
. .
. .
]
# type a second letter
assume-console [
type [f]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
# now wrap
screen-should-contain [
. .
.efab↩.
.c .
. .
]
]
scenario editor-moves-cursor-after-inserting-characters [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [ab]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
assume-console [
type [01]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.01ab .
. .
]
]
scenario editor-wraps-cursor-after-inserting-characters [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abcde]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
assume-console [
left-click 1, 4 # line is full; no wrap icon yet
type [f]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
screen-should-contain [
. .
.abcd↩ .
.fe .
. .
]
memory-should-contain [
3 <- 2 # cursor row
4 <- 1 # cursor column
]
]
scenario editor-wraps-cursor-after-inserting-characters-2 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abcde]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
assume-console [
left-click 1, 3 # right before the wrap icon
type [f]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
screen-should-contain [
. .
.abcf↩ .
.de .
. .
]
memory-should-contain [
3 <- 2 # cursor row
4 <- 0 # cursor column
]
]
scenario editor-moves-cursor-down-after-inserting-newline [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
type [0
1]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.0 .
.1abc .
. .
]
]
scenario editor-moves-cursor-down-after-inserting-newline-2 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 1:literal/left, 10:literal/right
assume-console [
type [0
1]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
. 0 .
. 1abc .
. .
]
]
scenario editor-clears-previous-line-completely-after-inserting-newline [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abcde]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
# press just a 'newline'
assume-console [
type [
]
]
screen-should-contain [
. .
.abcd↩ .
.e .
. .
. .
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
# line should be fully cleared
screen-should-contain [
. .
. .
.abcd↩ .
.e .
. .
]
]
scenario editor-handles-backspace-key [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 1, 1
type [«]
]
3:event/backspace <- merge 0:literal/text, 8:literal/backspace, 0:literal/dummy, 0:literal/dummy
replace-in-console 171:literal/«, 3:event/backspace
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
4:number <- get 2:address:editor-data/deref, cursor-row:offset
5:number <- get 2:address:editor-data/deref, cursor-column:offset
]
screen-should-contain [
. .
.bc .
. .
]
memory-should-contain [
4 <- 1
5 <- 0
]
]
scenario editor-clears-last-line-on-backspace [
assume-screen 10:literal/width, 5:literal/height
# just one character in final line
1:address:array:character <- new [ab
cd]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
assume-console [
left-click 2, 0 # cursor at only character in final line
type [«]
]
3:event/backspace <- merge 0:literal/text, 8:literal/backspace, 0:literal/dummy, 0:literal/dummy
replace-in-console 171:literal/«, 3:event/backspace
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abcd .
. .
]
]
scenario editor-moves-cursor-right-with-key [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
press 65514 # right arrow
type [0]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.a0bc .
. .
]
]
scenario editor-moves-cursor-to-next-line-with-right-arrow [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
d]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
press 65514 # right arrow
press 65514 # right arrow
press 65514 # right arrow
press 65514 # right arrow - next line
type [0]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abc .
.0d .
. .
]
]
scenario editor-moves-cursor-to-next-line-with-right-arrow-2 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
d]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 1:literal/left, 10:literal/right
assume-console [
press 65514 # right arrow
press 65514 # right arrow
press 65514 # right arrow
press 65514 # right arrow - next line
type [0]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
. abc .
. 0d .
. .
]
]
scenario editor-moves-cursor-to-next-wrapped-line-with-right-arrow [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abcdef]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
assume-console [
left-click 1, 3
press 65514 # right arrow
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
screen-should-contain [
. .
.abcd↩ .
.ef .
. .
]
memory-should-contain [
3 <- 2
4 <- 0
]
]
scenario editor-moves-cursor-to-next-wrapped-line-with-right-arrow-2 [
assume-screen 10:literal/width, 5:literal/height
# line just barely wrapping
1:address:array:character <- new [abcde]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
# position cursor at last character before wrap and hit right-arrow
assume-console [
left-click 1, 3
press 65514 # right arrow
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
3 <- 2
4 <- 0
]
# now hit right arrow again
assume-console [
press 65514
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
3 <- 2
4 <- 1
]
]
scenario editor-moves-cursor-to-next-wrapped-line-with-right-arrow-3 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abcdef]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 1:literal/left, 6:literal/right
assume-console [
left-click 1, 4
press 65514 # right arrow
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
screen-should-contain [
. .
. abcd↩ .
. ef .
. .
]
memory-should-contain [
3 <- 2
4 <- 1
]
]
scenario editor-moves-cursor-to-next-line-with-right-arrow-at-end-of-line [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
d]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 1, 3
press 65514 # right arrow - next line
type [0]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abc .
.0d .
. .
]
]
scenario editor-moves-cursor-left-with-key [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 1, 2
press 65515 # left arrow
type [0]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.a0bc .
. .
]
]
scenario editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line [
assume-screen 10:literal/width, 5:literal/height
# initialize editor with two lines
1:address:array:character <- new [abc
d]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
# position cursor at start of second line (so there's no previous newline)
assume-console [
left-click 2, 0
press 65515 # left arrow
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
3 <- 1
4 <- 3
]
]
scenario editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line-2 [
assume-screen 10:literal/width, 5:literal/height
# initialize editor with three lines
1:address:array:character <- new [abc
def
g]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
# position cursor further down (so there's a newline before the character at
# the cursor)
assume-console [
left-click 3, 0
press 65515 # left arrow
type [0]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abc .
.def0 .
.g .
. .
]
]
scenario editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line-3 [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
def
g]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
# position cursor at start of text
assume-console [
left-click 1, 0
press 65515 # left arrow should have no effect
type [0]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.0abc .
.def .
.g .
. .
]
]
scenario editor-moves-cursor-to-previous-line-with-left-arrow-at-start-of-line-4 [
assume-screen 10:literal/width, 5:literal/height
# initialize editor with text containing an empty line
1:address:array:character <- new [abc
d]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
# position cursor right after empty line
assume-console [
left-click 3, 0
press 65515 # left arrow
type [0]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
]
screen-should-contain [
. .
.abc .
.0 .
.d .
. .
]
]
scenario editor-moves-across-screen-lines-across-wrap-with-left-arrow [
assume-screen 10:literal/width, 5:literal/height
# initialize editor with text containing an empty line
1:address:array:character <- new [abcdef]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 5:literal/right
screen-should-contain [
. .
.abcd↩ .
.ef .
. .
]
# position cursor right after empty line
assume-console [
left-click 2, 0
press 65515 # left arrow
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
3 <- 1 # previous row
4 <- 3 # end of wrapped line
]
]
scenario editor-moves-to-previous-line-with-up-arrow [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
def]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 2, 1
press 65517 # up arrow
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
3 <- 1
4 <- 1
]
]
scenario editor-moves-to-next-line-with-down-arrow [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
def]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
# cursor starts out at (1, 0)
assume-console [
press 65516 # down arrow
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
# ..and ends at (2, 0)
memory-should-contain [
3 <- 2
4 <- 0
]
]
scenario editor-adjusts-column-at-previous-line [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [ab
def]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 2, 3
press 65517 # up arrow
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
3 <- 1
4 <- 2
]
]
scenario editor-adjusts-column-at-next-line [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc
de]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 1, 3
press 65516 # down arrow
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:number <- get 2:address:editor-data/deref, cursor-row:offset
4:number <- get 2:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
3 <- 2
4 <- 2
]
]
scenario point-at-multiple-editors [
assume-screen 30:literal/width, 5:literal/height
# initialize both halves of screen
1:address:array:character <- new [abc]
2:address:array:character <- new [def]
3:address:programming-environment-data <- new-programming-environment screen:address, 1:address:array:character, 2:address:array:character
# focus on both sides
assume-console [
left-click 1, 1
left-click 1, 17
]
# check cursor column in each
run [
event-loop screen:address, console:address, 3:address:programming-environment-data
4:address:editor-data <- get 3:address:programming-environment-data/deref, recipes:offset
5:number <- get 4:address:editor-data/deref, cursor-column:offset
6:address:editor-data <- get 3:address:programming-environment-data/deref, current-sandbox:offset
7:number <- get 6:address:editor-data/deref, cursor-column:offset
]
memory-should-contain [
5 <- 1
7 <- 17
]
]
scenario edit-multiple-editors [
assume-screen 30:literal/width, 5:literal/height
# initialize both halves of screen
1:address:array:character <- new [abc]
2:address:array:character <- new [def]
3:address:programming-environment-data <- new-programming-environment screen:address, 1:address:array:character, 2:address:array:character
# type one letter in each of them
assume-console [
left-click 1, 1
type [0]
left-click 1, 17
type [1]
]
run [
event-loop screen:address, console:address, 3:address:programming-environment-data
4:address:editor-data <- get 3:address:programming-environment-data/deref, recipes:offset
5:number <- get 4:address:editor-data/deref, cursor-column:offset
6:address:editor-data <- get 3:address:programming-environment-data/deref, current-sandbox:offset
7:number <- get 6:address:editor-data/deref, cursor-column:offset
]
screen-should-contain [
. run (F10) . # this line has a different background, but we don't test that yet
.a0bc ┊d1ef .
.┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.
. ┊ .
]
memory-should-contain [
5 <- 2 # cursor column of recipe editor
7 <- 18 # cursor column of sandbox editor
]
# show the cursor at the right window
run [
screen:address <- print-character screen:address, 9251:literal/␣
]
screen-should-contain [
. run (F10) .
.a0bc ┊d1␣f .
.┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.
. ┊ .
]
]
scenario multiple-editors-cover-only-their-own-areas [
assume-screen 60:literal/width, 10:literal/height
run [
1:address:array:character <- new [abc]
2:address:array:character <- new [def]
3:address:programming-environment-data <- new-programming-environment screen:address, 1:address:array:character, 2:address:array:character
]
# divider isn't messed up
screen-should-contain [
. run (F10) .
.abc ┊def .
. ┊ .
. ┊ .
. ┊ .
]
]
scenario editor-in-focus-keeps-cursor [
assume-screen 30:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:array:character <- new [def]
# initialize programming environment and highlight cursor
assume-console []
run [
3:address:programming-environment-data <- new-programming-environment screen:address, 1:address:array:character, 2:address:array:character
event-loop screen:address, console:address, 3:address:programming-environment-data
screen:address <- print-character screen:address, 9251:literal/␣
]
# is cursor at the right place?
screen-should-contain [
. run (F10) .
.␣bc ┊def .
# artifact of fake console: no events = no render
# .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.
. ┊ .
]
# now try typing a letter
assume-console [
type [z]
]
run [
3:address:programming-environment-data <- new-programming-environment screen:address, 1:address:array:character, 2:address:array:character
event-loop screen:address, console:address, 3:address:programming-environment-data
screen:address <- print-character screen:address, 9251:literal/␣
]
# cursor should still be right
screen-should-contain [
. run (F10) .
.z␣bc ┊def .
.┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━.
. ┊ .
]
]
## Running code from the editors
container sandbox-data [
data:address:array:character
response:address:array:character
warnings:address:array:character
next-sandbox:address:sandbox-data
]
scenario run-and-show-results [
$close-trace # trace too long for github
assume-screen 100:literal/width, 12:literal/height
# recipe editor is empty
1:address:array:character <- new []
# sandbox editor contains an instruction without storing outputs
2:address:array:character <- new [divide-with-remainder 11:literal, 3:literal]
3:address:programming-environment-data <- new-programming-environment screen:address, 1:address:array:character, 2:address:array:character
# run the code in the editors
assume-console [
press 65526 # F10
]
run [
event-loop screen:address, console:address, 3:address:programming-environment-data
]
# check that screen prints the results
screen-should-contain [
. run (F10) .
. ┊ .
.┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊divide-with-remainder 11:literal, 3:literal .
. ┊3 .
. ┊2 .
. ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊ .
]
screen-should-contain-in-color 7:literal/white, [
. .
. .
. .
. divide-with-remainder 11:literal, 3:literal .
. .
. .
. .
. .
]
screen-should-contain-in-color, 245:literal/grey, [
. .
. ┊ .
.┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊ .
. ┊3 .
. ┊2 .
. ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊ .
]
# run another command
assume-console [
left-click 1, 80
type [add 2:literal, 2:literal]
press 65526 # F10
]
run [
event-loop screen:address, console:address, 3:address:programming-environment-data
]
# check that screen prints the results
screen-should-contain [
. run (F10) .
. ┊ .
.┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊add 2:literal, 2:literal .
. ┊4 .
. ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊divide-with-remainder 11:literal, 3:literal .
. ┊3 .
. ┊2 .
. ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊ .
]
]
recipe run-sandboxes [
new-default-space
env:address:programming-environment-data <- next-ingredient
recipes:address:editor-data <- get env:address:programming-environment-data/deref, recipes:offset
current-sandbox:address:editor-data <- get env:address:programming-environment-data/deref, current-sandbox:offset
# load code from recipe editor, save any warnings
in:address:array:character <- editor-contents recipes:address:editor-data
recipe-warnings:address:address:array:character <- get-address env:address:programming-environment-data/deref, recipe-warnings:offset
recipe-warnings:address:address:array:character/deref <- reload in:address:array:character
# check contents of right editor (sandbox)
{
sandbox-contents:address:array:character <- editor-contents current-sandbox:address:editor-data
break-unless sandbox-contents:address:array:character
# if contents exist, run them and turn them into a new sandbox-data
new-sandbox:address:sandbox-data <- new sandbox-data:type
data:address:address:array:character <- get-address new-sandbox:address:sandbox-data/deref, data:offset
data:address:address:array:character/deref <- copy sandbox-contents:address:array:character
# push to head of sandbox list
dest:address:address:sandbox-data <- get-address env:address:programming-environment-data/deref, sandbox:offset
next:address:address:sandbox-data <- get-address new-sandbox:address:sandbox-data/deref, next-sandbox:offset
next:address:address:sandbox-data/deref <- copy dest:address:address:sandbox-data/deref
dest:address:address:sandbox-data/deref <- copy new-sandbox:address:sandbox-data
# clear sandbox editor
init:address:address:duplex-list <- get-address current-sandbox:address:editor-data/deref, data:offset
init:address:address:duplex-list/deref <- push-duplex 167:literal/§, 0:literal/tail
}
# rerun other sandboxes
curr:address:sandbox-data <- get env:address:programming-environment-data/deref, sandbox:offset
{
break-unless curr:address:sandbox-data
data:address:address:array:character <- get-address curr:address:sandbox-data/deref, data:offset
response:address:address:array:character <- get-address curr:address:sandbox-data/deref, response:offset
warnings:address:address:array:character <- get-address curr:address:sandbox-data/deref, warnings:offset
response:address:address:array:character/deref, warnings:address:address:array:character/deref <- run-interactive data:address:address:array:character/deref
curr:address:sandbox-data <- get curr:address:sandbox-data/deref, next-sandbox:offset
loop
}
]
scenario run-updates-results [
$close-trace # trace too long for github
assume-screen 100:literal/width, 12:literal/height
# define a recipe (no indent for the 'add' line below so column numbers are more obvious)
1:address:array:character <- new [
recipe foo [
z:number <- add 2:literal, 2:literal
]]
# sandbox editor contains an instruction without storing outputs
2:address:array:character <- new [foo]
3:address:programming-environment-data <- new-programming-environment screen:address, 1:address:array:character, 2:address:array:character
# run the code in the editors
assume-console [
press 65526 # F10
]
run [
event-loop screen:address, console:address, 3:address:programming-environment-data
]
# check that screen prints the results
screen-should-contain [
. run (F10) .
. ┊ .
.recipe foo [ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
.z:number <- add 2:literal, 2:literal ┊foo .
.] ┊4 .
.┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊ .
]
# make a change (incrementing one of the args to 'add'), then rerun
assume-console [
left-click 3, 28 # one past the value of the second arg
type [«3] # replace
press 65526 # F10
]
4:event/backspace <- merge 0:literal/text, 8:literal/backspace, 0:literal/dummy, 0:literal/dummy
replace-in-console 171:literal/«, 4:event/backspace
run [
event-loop screen:address, console:address, 3:address:programming-environment-data
]
# check that screen updates the result on the right
screen-should-contain [
. run (F10) .
. ┊ .
.recipe foo [ ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
.z:number <- add 2:literal, 3:literal ┊foo .
.] ┊5 .
.┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊ .
]
]
scenario run-instruction-and-print-warnings [
$close-trace # trace too long for github
assume-screen 100:literal/width, 10:literal/height
# left editor is empty
1:address:array:character <- new []
# right editor contains an illegal instruction
2:address:array:character <- new [get 1234:number, foo:offset]
3:address:programming-environment-data <- new-programming-environment screen:address, 1:address:array:character, 2:address:array:character
# run the code in the editors
assume-console [
press 65526 # F10
]
run [
event-loop screen:address, console:address, 3:address:programming-environment-data
]
# check that screen prints error message in red
screen-should-contain [
. run (F10) .
. ┊ .
.┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊get 1234:number, foo:offset .
. ┊unknown element foo in container number .
. ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊ .
]
screen-should-contain-in-color 7:literal/white, [
. .
. .
. .
. get 1234:number, foo:offset .
. .
. .
. .
]
screen-should-contain-in-color, 1:literal/red, [
. .
. .
. .
. .
. unknown element foo in container number .
. .
]
screen-should-contain-in-color, 245:literal/grey, [
. .
. ┊ .
.┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊ .
. ┊ .
. ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
. ┊ .
]
]
recipe editor-contents [
new-default-space
editor:address:editor-data <- next-ingredient
buf:address:buffer <- new-buffer 80:literal
curr:address:duplex-list <- get editor:address:editor-data/deref, data:offset
# skip § sentinel
assert curr:address:duplex-list, [editor without data is illegal; must have at least a sentinel]
curr:address:duplex-list <- next-duplex curr:address:duplex-list
reply-unless curr:address:duplex-list, 0:literal
{
break-unless curr:address:duplex-list
c:character <- get curr:address:duplex-list/deref, value:offset
buffer-append buf:address:buffer, c:character
curr:address:duplex-list <- next-duplex curr:address:duplex-list
loop
}
result:address:array:character <- buffer-to-array buf:address:buffer
reply result:address:array:character
]
scenario editor-provides-edited-contents [
assume-screen 10:literal/width, 5:literal/height
1:address:array:character <- new [abc]
2:address:editor-data <- new-editor 1:address:array:character, screen:address, 0:literal/left, 10:literal/right
assume-console [
left-click 1, 2
type [def]
]
run [
editor-event-loop screen:address, console:address, 2:address:editor-data
3:address:array:character <- editor-contents 2:address:editor-data
4:array:character <- copy 3:address:array:character/deref
]
memory-should-contain [
4:string <- [abdefc]
]
]
## helpers for drawing editor borders
recipe draw-box [
new-default-space
screen:address <- next-ingredient
top:number <- next-ingredient
left:number <- next-ingredient
bottom:number <- next-ingredient
right:number <- next-ingredient
color:number, color-found?:boolean <- next-ingredient
{
# default color to white
break-if color-found?:boolean
color:number <- copy 245:literal/grey
}
# top border
draw-horizontal screen:address, top:number, left:number, right:number, color:number
draw-horizontal screen:address, bottom:number, left:number, right:number, color:number
draw-vertical screen:address, left:number, top:number, bottom:number, color:number
draw-vertical screen:address, right:number, top:number, bottom:number, color:number
draw-top-left screen:address, top:number, left:number, color:number
draw-top-right screen:address, top:number, right:number, color:number
draw-bottom-left screen:address, bottom:number, left:number, color:number
draw-bottom-right screen:address, bottom:number, right:number, color:number
# position cursor inside box
move-cursor screen:address, top:number, left:number
cursor-down screen:address
cursor-right screen:address
]
recipe draw-horizontal [
new-default-space
screen:address <- next-ingredient
row:number <- next-ingredient
x:number <- next-ingredient
right:number <- next-ingredient
style:character, style-found?:boolean <- next-ingredient
{
break-if style-found?:boolean
style:character <- copy 9472:literal/horizontal
}
color:number, color-found?:boolean <- next-ingredient
{
# default color to white
break-if color-found?:boolean
color:number <- copy 245:literal/grey
}
bg-color:number, bg-color-found?:boolean <- next-ingredient
{
break-if bg-color-found?:boolean
bg-color:number <- copy 0:literal/black
}
move-cursor screen:address, row:number, x:number
{
continue?:boolean <- lesser-or-equal x:number, right:number # right is inclusive, to match editor-data semantics
break-unless continue?:boolean
print-character screen:address, style:character, color:number, bg-color:number
x:number <- add x:number, 1:literal
loop
}
]
recipe draw-vertical [
new-default-space
screen:address <- next-ingredient
col:number <- next-ingredient
x:number <- next-ingredient
bottom:number <- next-ingredient
style:character, style-found?:boolean <- next-ingredient
{
break-if style-found?:boolean
style:character <- copy 9474:literal/vertical
}
color:number, color-found?:boolean <- next-ingredient
{
# default color to white
break-if color-found?:boolean
color:number <- copy 245:literal/grey
}
{
continue?:boolean <- lesser-than x:number, bottom:number
break-unless continue?:boolean
move-cursor screen:address, x:number, col:number
print-character screen:address, style:character, color:number
x:number <- add x:number, 1:literal
loop
}
]
recipe draw-top-left [
new-default-space
screen:address <- next-ingredient
top:number <- next-ingredient
left:number <- next-ingredient
color:number, color-found?:boolean <- next-ingredient
{
# default color to white
break-if color-found?:boolean
color:number <- copy 245:literal/grey
}
move-cursor screen:address, top:number, left:number
print-character screen:address, 9484:literal/down-right, color:number
]
recipe draw-top-right [
new-default-space
screen:address <- next-ingredient
top:number <- next-ingredient
right:number <- next-ingredient
color:number, color-found?:boolean <- next-ingredient
{
# default color to white
break-if color-found?:boolean
color:number <- copy 245:literal/grey
}
move-cursor screen:address, top:number, right:number
print-character screen:address, 9488:literal/down-left, color:number
]
recipe draw-bottom-left [
new-default-space
screen:address <- next-ingredient
bottom:number <- next-ingredient
left:number <- next-ingredient
color:number, color-found?:boolean <- next-ingredient
{
# default color to white
break-if color-found?:boolean
color:number <- copy 245:literal/grey
}
move-cursor screen:address, bottom:number, left:number
print-character screen:address, 9492:literal/up-right, color:number
]
recipe draw-bottom-right [
new-default-space
screen:address <- next-ingredient
bottom:number <- next-ingredient
right:number <- next-ingredient
color:number, color-found?:boolean <- next-ingredient
{
# default color to white
break-if color-found?:boolean
color:number <- copy 245:literal/grey
}
move-cursor screen:address, bottom:number, right:number
print-character screen:address, 9496:literal/up-left, color:number
]
recipe print-string-with-gradient-background [
new-default-space
x:address:screen <- next-ingredient
s:address:array:character <- next-ingredient
color:number <- next-ingredient
bg-color1:number <- next-ingredient
bg-color2:number <- next-ingredient
len:number <- length s:address:array:character/deref
color-range:number <- subtract bg-color2:number, bg-color1:number
color-quantum:number <- divide color-range:number, len:number
#? close-console #? 2
#? $print len:number, [, ], color-range:number, [, ], color-quantum:number, [
#? ] #? 2
#? #? $exit #? 3
bg-color:number <- copy bg-color1:number
i:number <- copy 0:literal
{
done?:boolean <- greater-or-equal i:number, len:number
break-if done?:boolean
c:character <- index s:address:array:character/deref, i:number
print-character x:address:screen, c:character, color:number, bg-color:number
i:number <- add i:number, 1:literal
bg-color:number <- add bg-color:number, color-quantum:number
#? $print [=> ], bg-color:number, [
#? ] #? 1
loop
}
#? $exit #? 1
reply x:address:screen/same-as-ingredient:0
]