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<span class="SalientComment">## running code from the editor and creating sandboxes</span>
<span class="Comment">#</span>
<span class="Comment"># Running code in the sandbox editor prepends its contents to a list of</span>
<span class="Comment"># (non-editable) sandboxes below the editor, showing the result and a maybe</span>
<span class="Comment"># few other things.</span>
<span class="Comment">#</span>
<span class="Comment"># This layer draws the menubar buttons non-editable sandboxes but they don't</span>
<span class="Comment"># do anything yet. Later layers implement each button.</span>
<span class="muRecipe">def!</span> main [
<span class="Constant">local-scope</span>
open-console
initial-recipe:text<span class="Special"> <- </span>restore <span class="Constant">[recipes.mu]</span>
initial-sandbox:text<span class="Special"> <- </span>new <span class="Constant">[]</span>
hide-screen <span class="Constant">0/screen</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment <span class="Constant">0/screen</span>, initial-recipe, initial-sandbox
env<span class="Special"> <- </span>restore-sandboxes env
render-all <span class="Constant">0/screen</span>, env, render
event-loop <span class="Constant">0/screen</span>, <span class="Constant">0/console</span>, env
<span class="Comment"># never gets here</span>
]
<span class="muData">container</span> environment [
sandbox:&:sandbox <span class="Comment"># list of sandboxes, from top to bottom</span>
render-from:num
number-of-sandboxes:num
]
<span class="muRecipe">after</span> <span class="Constant"><programming-environment-initialization></span> [
*result<span class="Special"> <- </span>put *result, <span class="Constant">render-from:offset</span>, <span class="Constant">-1</span>
]
<span class="muData">container</span> sandbox [
data:text
response:text
<span class="Comment"># coordinates to track clicks</span>
<span class="Comment"># constraint: will be 0 for sandboxes at positions before env.render-from</span>
starting-row-on-screen:num
code-ending-row-on-screen:num <span class="Comment"># past end of code</span>
screen:&:screen <span class="Comment"># prints in the sandbox go here</span>
next-sandbox:&:sandbox
]
<span class="muScenario">scenario</span> run-and-show-results [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">15/height</span>
<span class="Comment"># recipe editor is empty</span>
<span class="Comment"># sandbox editor contains an instruction without storing outputs</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[]</span>, <span class="Constant">[divide-with-remainder 11, 3]</span>
<span class="Comment"># run the code in the editors</span>
assume-console [
press F4
]
run [
event-loop screen, console, env
]
<span class="Comment"># check that screen prints the results</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎0 edit copy delete .</span>
<span class="Constant"> . ╎divide-with-remainder 11, 3 .</span>
<span class="Constant"> . ╎3 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
screen-should-contain-in-color <span class="Constant">7/white</span>, [
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
<span class="Constant"> . divide-with-remainder 11, 3 .</span>
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
]
screen-should-contain-in-color <span class="Constant">245/grey</span>, [
<span class="Constant"> . .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> . ╎3 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
<span class="Comment"># sandbox menu in reverse video</span>
screen-should-contain-in-color <span class="Constant">232/black</span>, [
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
<span class="Constant"> . 0 edit copy delete .</span>
]
<span class="Comment"># run another command</span>
assume-console [
left-click <span class="Constant">1</span>, <span class="Constant">80</span>
type <span class="Constant">[add 2, 2]</span>
press F4
]
run [
event-loop screen, console, env
]
<span class="Comment"># check that screen prints both sandboxes</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
<span class="Constant"> . ╎4 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎1 edit copy delete .</span>
<span class="Constant"> . ╎divide-with-remainder 11, 3 .</span>
<span class="Constant"> . ╎3 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="muRecipe">after</span> <span class="Constant"><global-keypress></span> [
<span class="Comment"># F4? load all code and run all sandboxes.</span>
<span class="Delimiter">{</span>
do-run?:bool<span class="Special"> <- </span>equal k, <span class="Constant">65532/F4</span>
<span class="muControl">break-unless</span> do-run?
screen<span class="Special"> <- </span>update-status screen, <span class="Constant">[running... ]</span>, <span class="Constant">245/grey</span>
error?:bool, env, screen<span class="Special"> <- </span>run-sandboxes env, screen
<span class="Comment"># F4 might update warnings and results on both sides</span>
screen<span class="Special"> <- </span>render-all screen, env, render
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> error?
screen<span class="Special"> <- </span>update-status screen, <span class="Constant">[ ]</span>, <span class="Constant">245/grey</span>
<span class="Delimiter">}</span>
screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, sandbox-in-focus?, env
<span class="muControl">loop</span> +next-event
<span class="Delimiter">}</span>
]
<span class="muRecipe">def</span> run-sandboxes env:&:environment, screen:&:screen<span class="muRecipe"> -> </span>errors-found?:bool, env:&:environment, screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
errors-found?:bool, env, screen<span class="Special"> <- </span>update-recipes env, screen
<span class="muControl">return-if</span> errors-found?
<span class="Comment"># check contents of right editor (sandbox)</span>
<span class="Constant"> <run-sandboxes-begin></span>
current-sandbox:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span>
<span class="Delimiter">{</span>
sandbox-contents:text<span class="Special"> <- </span>editor-contents current-sandbox
<span class="muControl">break-unless</span> sandbox-contents
<span class="Comment"># if contents exist, first save them</span>
<span class="Comment"># run them and turn them into a new sandbox</span>
new-sandbox:&:sandbox<span class="Special"> <- </span>new <span class="Constant">sandbox:type</span>
*new-sandbox<span class="Special"> <- </span>put *new-sandbox, <span class="Constant">data:offset</span>, sandbox-contents
<span class="Comment"># push to head of sandbox list</span>
dest:&:sandbox<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span>
*new-sandbox<span class="Special"> <- </span>put *new-sandbox, <span class="Constant">next-sandbox:offset</span>, dest
*env<span class="Special"> <- </span>put *env, <span class="Constant">sandbox:offset</span>, new-sandbox
<span class="Comment"># update sandbox count</span>
sandbox-count:num<span class="Special"> <- </span>get *env, <span class="Constant">number-of-sandboxes:offset</span>
sandbox-count<span class="Special"> <- </span>add sandbox-count, <span class="Constant">1</span>
*env<span class="Special"> <- </span>put *env, <span class="Constant">number-of-sandboxes:offset</span>, sandbox-count
<span class="Comment"># clear sandbox editor</span>
init:&:duplex-list:char<span class="Special"> <- </span>push <span class="Constant">167/§</span>, <span class="Constant">0/tail</span>
*current-sandbox<span class="Special"> <- </span>put *current-sandbox, <span class="Constant">data:offset</span>, init
*current-sandbox<span class="Special"> <- </span>put *current-sandbox, <span class="Constant">top-of-screen:offset</span>, init
<span class="Delimiter">}</span>
<span class="Comment"># save all sandboxes before running, just in case we die when running</span>
save-sandboxes env
<span class="Comment"># run all sandboxes</span>
curr:&:sandbox<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span>
idx:num<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> curr
curr<span class="Special"> <- </span>update-sandbox curr, env, idx
curr<span class="Special"> <- </span>get *curr, <span class="Constant">next-sandbox:offset</span>
idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
<span class="Constant"> <run-sandboxes-end></span>
]
<span class="Comment"># copy code from recipe editor, persist to disk, load</span>
<span class="Comment"># replaced in a later layer (whereupon errors-found? will actually be set)</span>
<span class="muRecipe">def</span> update-recipes env:&:environment, screen:&:screen<span class="muRecipe"> -> </span>errors-found?:bool, env:&:environment, screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
recipes:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span>
in:text<span class="Special"> <- </span>editor-contents recipes
save <span class="Constant">[recipes.mu]</span>, in <span class="Comment"># newlayer: persistence</span>
reload in
errors-found?<span class="Special"> <- </span>copy <span class="Constant">0/false</span>
]
<span class="Comment"># replaced in a later layer</span>
<span class="muRecipe">def!</span> update-sandbox sandbox:&:sandbox, env:&:environment, idx:num<span class="muRecipe"> -> </span>sandbox:&:sandbox, env:&:environment [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
data:text<span class="Special"> <- </span>get *sandbox, <span class="Constant">data:offset</span>
response:text, _, fake-screen:&:screen<span class="Special"> <- </span>run-sandboxed data
*sandbox<span class="Special"> <- </span>put *sandbox, <span class="Constant">response:offset</span>, response
*sandbox<span class="Special"> <- </span>put *sandbox, <span class="Constant">screen:offset</span>, fake-screen
]
<span class="muRecipe">def</span> update-status screen:&:screen, msg:text, color:num<span class="muRecipe"> -> </span>screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
screen<span class="Special"> <- </span>move-cursor screen, <span class="Constant">0</span>, <span class="Constant">2</span>
screen<span class="Special"> <- </span>print screen, msg, color, <span class="Constant">238/grey/background</span>
]
<span class="muRecipe">def</span> save-sandboxes env:&:environment [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
current-sandbox:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span>
<span class="Comment"># first clear previous versions, in case we deleted some sandbox</span>
$system <span class="Constant">[rm lesson/[0-9]</span>* >/dev/null <span class="Constant">2</span>>/dev/null] <span class="Comment"># some shells can't handle '>&'</span>
curr:&:sandbox<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span>
idx:num<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> curr
data:text<span class="Special"> <- </span>get *curr, <span class="Constant">data:offset</span>
filename:text<span class="Special"> <- </span>to-text idx
save filename, data
<span class="Constant"> <end-save-sandbox></span>
idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span>
curr<span class="Special"> <- </span>get *curr, <span class="Constant">next-sandbox:offset</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
]
<span class="muRecipe">def!</span> render-sandbox-side screen:&:screen, env:&:environment, <span class="Delimiter">{</span>render-editor: (recipe (address screen) (address editor)<span class="muRecipe"> -> </span>number number (address screen) (address editor))<span class="Delimiter">}</span><span class="muRecipe"> -> </span>screen:&:screen, env:&:environment [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
trace <span class="Constant">11</span>, <span class="Constant">[app]</span>, <span class="Constant">[render sandbox side]</span>
current-sandbox:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span>
row:num, column:num<span class="Special"> <- </span>copy <span class="Constant">1</span>, <span class="Constant">0</span>
left:num<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">left:offset</span>
right:num<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">right:offset</span>
<span class="Comment"># render sandbox editor</span>
render-from:num<span class="Special"> <- </span>get *env, <span class="Constant">render-from:offset</span>
<span class="Delimiter">{</span>
render-current-sandbox?:bool<span class="Special"> <- </span>equal render-from, <span class="Constant">-1</span>
<span class="muControl">break-unless</span> render-current-sandbox?
row, column, screen, current-sandbox<span class="Special"> <- </span>call render-editor, screen, current-sandbox
clear-screen-from screen, row, column, left, right
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
<span class="Delimiter">}</span>
<span class="Comment"># render sandboxes</span>
draw-horizontal screen, row, left, right
sandbox:&:sandbox<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span>
row, screen<span class="Special"> <- </span>render-sandboxes screen, sandbox, left, right, row, render-from
clear-rest-of-screen screen, row, left, right
]
<span class="muRecipe">def</span> render-sandboxes screen:&:screen, sandbox:&:sandbox, left:num, right:num, row:num, render-from:num, idx:num<span class="muRecipe"> -> </span>row:num, screen:&:screen, sandbox:&:sandbox [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="muControl">return-unless</span> sandbox
screen-height:num<span class="Special"> <- </span>screen-height screen
at-bottom?:bool<span class="Special"> <- </span>greater-or-equal row, screen-height
<span class="muControl">return-if</span> at-bottom?:bool
hidden?:bool<span class="Special"> <- </span>lesser-than idx, render-from
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> hidden?
<span class="Comment"># render sandbox menu</span>
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
screen<span class="Special"> <- </span>move-cursor screen, row, left
screen<span class="Special"> <- </span>render-sandbox-menu screen, idx, left, right
<span class="Comment"># save menu row so we can detect clicks to it later</span>
*sandbox<span class="Special"> <- </span>put *sandbox, <span class="Constant">starting-row-on-screen:offset</span>, row
<span class="Comment"># render sandbox contents</span>
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
screen<span class="Special"> <- </span>move-cursor screen, row, left
sandbox-data:text<span class="Special"> <- </span>get *sandbox, <span class="Constant">data:offset</span>
row, screen<span class="Special"> <- </span>render-code screen, sandbox-data, left, right, row
*sandbox<span class="Special"> <- </span>put *sandbox, <span class="Constant">code-ending-row-on-screen:offset</span>, row
<span class="Comment"># render sandbox warnings, screen or response, in that order</span>
sandbox-response:text<span class="Special"> <- </span>get *sandbox, <span class="Constant">response:offset</span>
<span class="Constant"> <render-sandbox-results></span>
<span class="Delimiter">{</span>
sandbox-screen:&:screen<span class="Special"> <- </span>get *sandbox, <span class="Constant">screen:offset</span>
empty-screen?:bool<span class="Special"> <- </span>fake-screen-is-empty? sandbox-screen
<span class="muControl">break-if</span> empty-screen?
row, screen<span class="Special"> <- </span>render-screen screen, sandbox-screen, left, right, row
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> empty-screen?
<span class="Constant"> <render-sandbox-response></span>
row, screen<span class="Special"> <- </span>render-text screen, sandbox-response, left, right, <span class="Constant">245/grey</span>, row
<span class="Delimiter">}</span>
<span class="Constant"> +render-sandbox-end</span>
at-bottom?:bool<span class="Special"> <- </span>greater-or-equal row, screen-height
<span class="muControl">return-if</span> at-bottom?
<span class="Comment"># draw solid line after sandbox</span>
draw-horizontal screen, row, left, right
<span class="Delimiter">}</span>
<span class="Comment"># if hidden, reset row attributes</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> hidden?
*sandbox<span class="Special"> <- </span>put *sandbox, <span class="Constant">starting-row-on-screen:offset</span>, <span class="Constant">0</span>
*sandbox<span class="Special"> <- </span>put *sandbox, <span class="Constant">code-ending-row-on-screen:offset</span>, <span class="Constant">0</span>
<span class="Constant"> <end-render-sandbox-reset-hidden></span>
<span class="Delimiter">}</span>
<span class="Comment"># draw next sandbox</span>
next-sandbox:&:sandbox<span class="Special"> <- </span>get *sandbox, <span class="Constant">next-sandbox:offset</span>
next-idx:num<span class="Special"> <- </span>add idx, <span class="Constant">1</span>
row, screen<span class="Special"> <- </span>render-sandboxes screen, next-sandbox, left, right, row, render-from, next-idx
]
<span class="muRecipe">def</span> render-sandbox-menu screen:&:screen, sandbox-index:num, left:num, right:num<span class="muRecipe"> -> </span>screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
move-cursor-to-column screen, left
edit-button-left:num, edit-button-right:num, copy-button-left:num, copy-button-right:num, delete-button-left:num<span class="Special"> <- </span>sandbox-menu-columns left, right
print screen, sandbox-index, <span class="Constant">232/dark-grey</span>, <span class="Constant">245/grey</span>
start-buttons:num<span class="Special"> <- </span>subtract edit-button-left, <span class="Constant">1</span>
clear-line-until screen, start-buttons, <span class="Constant">245/grey</span>
print screen, <span class="Constant">[edit]</span>, <span class="Constant">232/black</span>, <span class="Constant">94/background-orange</span>
clear-line-until screen, edit-button-right, <span class="Constant">94/background-orange</span>
_, col:num<span class="Special"> <- </span>cursor-position screen
at-start-of-copy-button?:bool<span class="Special"> <- </span>equal col, copy-button-left
assert at-start-of-copy-button?, <span class="Constant">[aaa]</span>
print screen, <span class="Constant">[copy]</span>, <span class="Constant">232/black</span>, <span class="Constant">58/background-green</span>
clear-line-until screen, copy-button-right, <span class="Constant">58/background-green</span>
_, col:num<span class="Special"> <- </span>cursor-position screen
at-start-of-delete-button?:bool<span class="Special"> <- </span>equal col, delete-button-left
assert at-start-of-delete-button?, <span class="Constant">[bbb]</span>
print screen, <span class="Constant">[delete]</span>, <span class="Constant">232/black</span>, <span class="Constant">52/background-red</span>
clear-line-until screen, right, <span class="Constant">52/background-red</span>
]
<span class="Comment"># divide up the menu bar for a sandbox into 3 segments, for edit/copy/delete buttons</span>
<span class="Comment"># delete-button-right == right</span>
<span class="Comment"># all left/right pairs are inclusive</span>
<span class="muRecipe">def</span> sandbox-menu-columns left:num, right:num<span class="muRecipe"> -> </span>edit-button-left:num, edit-button-right:num, copy-button-left:num, copy-button-right:num, delete-button-left:num [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
start-buttons:num<span class="Special"> <- </span>add left, <span class="Constant">4/space-for-sandbox-index</span>
buttons-space:num<span class="Special"> <- </span>subtract right, start-buttons
button-width:num<span class="Special"> <- </span>divide-with-remainder buttons-space, <span class="Constant">3</span> <span class="Comment"># integer division</span>
buttons-wide-enough?:bool<span class="Special"> <- </span>greater-or-equal button-width, <span class="Constant">8</span>
assert buttons-wide-enough?, <span class="Constant">[sandbox must be at least 30 or so characters wide]</span>
edit-button-left:num<span class="Special"> <- </span>copy start-buttons
copy-button-left:num<span class="Special"> <- </span>add start-buttons, button-width
edit-button-right:num<span class="Special"> <- </span>subtract copy-button-left, <span class="Constant">1</span>
delete-button-left:num<span class="Special"> <- </span>subtract right, button-width
copy-button-right:num<span class="Special"> <- </span>subtract delete-button-left, <span class="Constant">1</span>
]
<span class="Comment"># print a text 's' to 'editor' in 'color' starting at 'row'</span>
<span class="Comment"># clear rest of last line, move cursor to next line</span>
<span class="muRecipe">def</span> render-text screen:&:screen, s:text, left:num, right:num, color:num, row:num<span class="muRecipe"> -> </span>row:num, screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="muControl">return-unless</span> s
column:num<span class="Special"> <- </span>copy left
screen<span class="Special"> <- </span>move-cursor screen, row, column
screen-height:num<span class="Special"> <- </span>screen-height screen
i:num<span class="Special"> <- </span>copy <span class="Constant">0</span>
len:num<span class="Special"> <- </span>length *s
<span class="Delimiter">{</span>
<span class="Constant"> +next-character</span>
done?:bool<span class="Special"> <- </span>greater-or-equal i, len
<span class="muControl">break-if</span> done?
done?<span class="Special"> <- </span>greater-or-equal row, screen-height
<span class="muControl">break-if</span> done?
c:char<span class="Special"> <- </span>index *s, i
<span class="Delimiter">{</span>
<span class="Comment"># at right? wrap.</span>
at-right?:bool<span class="Special"> <- </span>equal column, right
<span class="muControl">break-unless</span> at-right?
<span class="Comment"># print wrap icon</span>
wrap-icon:char<span class="Special"> <- </span>copy <span class="Constant">8617/loop-back-to-left</span>
print screen, wrap-icon, <span class="Constant">245/grey</span>
column<span class="Special"> <- </span>copy left
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
screen<span class="Special"> <- </span>move-cursor screen, row, column
<span class="muControl">loop</span> +next-character <span class="Comment"># retry i</span>
<span class="Delimiter">}</span>
i<span class="Special"> <- </span>add i, <span class="Constant">1</span>
<span class="Delimiter">{</span>
<span class="Comment"># newline? move to left rather than 0</span>
newline?:bool<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span>
<span class="muControl">break-unless</span> newline?
<span class="Comment"># clear rest of line in this window</span>
<span class="Delimiter">{</span>
done?:bool<span class="Special"> <- </span>greater-than column, right
<span class="muControl">break-if</span> done?
space:char<span class="Special"> <- </span>copy <span class="Constant">32/space</span>
print screen, space
column<span class="Special"> <- </span>add column, <span class="Constant">1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
column<span class="Special"> <- </span>copy left
screen<span class="Special"> <- </span>move-cursor screen, row, column
<span class="muControl">loop</span> +next-character
<span class="Delimiter">}</span>
print screen, c, color
column<span class="Special"> <- </span>add column, <span class="Constant">1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
was-at-left?:bool<span class="Special"> <- </span>equal column, left
clear-line-until screen, right
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> was-at-left?
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
<span class="Delimiter">}</span>
move-cursor screen, row, left
]
<span class="Comment"># assumes programming environment has no sandboxes; restores them from previous session</span>
<span class="muRecipe">def</span> restore-sandboxes env:&:environment<span class="muRecipe"> -> </span>env:&:environment [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="Comment"># read all scenarios, pushing them to end of a list of scenarios</span>
idx:num<span class="Special"> <- </span>copy <span class="Constant">0</span>
curr:&:sandbox<span class="Special"> <- </span>copy <span class="Constant">0</span>
prev:&:sandbox<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Delimiter">{</span>
filename:text<span class="Special"> <- </span>to-text idx
contents:text<span class="Special"> <- </span>restore filename
<span class="muControl">break-unless</span> contents <span class="Comment"># stop at first error; assuming file didn't exist</span>
<span class="Comment"># todo: handle empty sandbox</span>
<span class="Comment"># create new sandbox for file</span>
curr<span class="Special"> <- </span>new <span class="Constant">sandbox:type</span>
*curr<span class="Special"> <- </span>put *curr, <span class="Constant">data:offset</span>, contents
<span class="Constant"> <end-restore-sandbox></span>
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> idx
*env<span class="Special"> <- </span>put *env, <span class="Constant">sandbox:offset</span>, curr
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> idx
*prev<span class="Special"> <- </span>put *prev, <span class="Constant">next-sandbox:offset</span>, curr
<span class="Delimiter">}</span>
idx<span class="Special"> <- </span>add idx, <span class="Constant">1</span>
prev<span class="Special"> <- </span>copy curr
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
<span class="Comment"># update sandbox count</span>
*env<span class="Special"> <- </span>put *env, <span class="Constant">number-of-sandboxes:offset</span>, idx
]
<span class="Comment"># print the fake sandbox screen to 'screen' with appropriate delimiters</span>
<span class="Comment"># leave cursor at start of next line</span>
<span class="muRecipe">def</span> render-screen screen:&:screen, sandbox-screen:&:screen, left:num, right:num, row:num<span class="muRecipe"> -> </span>row:num, screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="muControl">return-unless</span> sandbox-screen
<span class="Comment"># print 'screen:'</span>
row<span class="Special"> <- </span>render-text screen, <span class="Constant">[screen:]</span>, left, right, <span class="Constant">245/grey</span>, row
screen<span class="Special"> <- </span>move-cursor screen, row, left
<span class="Comment"># start printing sandbox-screen</span>
column:num<span class="Special"> <- </span>copy left
s-width:num<span class="Special"> <- </span>screen-width sandbox-screen
s-height:num<span class="Special"> <- </span>screen-height sandbox-screen
buf:&:@:screen-cell<span class="Special"> <- </span>get *sandbox-screen, <span class="Constant">data:offset</span>
stop-printing:num<span class="Special"> <- </span>add left, s-width, <span class="Constant">3</span>
max-column:num<span class="Special"> <- </span>min stop-printing, right
i:num<span class="Special"> <- </span>copy <span class="Constant">0</span>
len:num<span class="Special"> <- </span>length *buf
screen-height:num<span class="Special"> <- </span>screen-height screen
<span class="Delimiter">{</span>
done?:bool<span class="Special"> <- </span>greater-or-equal i, len
<span class="muControl">break-if</span> done?
done?<span class="Special"> <- </span>greater-or-equal row, screen-height
<span class="muControl">break-if</span> done?
column<span class="Special"> <- </span>copy left
screen<span class="Special"> <- </span>move-cursor screen, row, column
<span class="Comment"># initial leader for each row: two spaces and a '.'</span>
space:char<span class="Special"> <- </span>copy <span class="Constant">32/space</span>
print screen, space, <span class="Constant">245/grey</span>
print screen, space, <span class="Constant">245/grey</span>
full-stop:char<span class="Special"> <- </span>copy <span class="Constant">46/period</span>
print screen, full-stop, <span class="Constant">245/grey</span>
column<span class="Special"> <- </span>add left, <span class="Constant">3</span>
<span class="Delimiter">{</span>
<span class="Comment"># print row</span>
row-done?:bool<span class="Special"> <- </span>greater-or-equal column, max-column
<span class="muControl">break-if</span> row-done?
curr:screen-cell<span class="Special"> <- </span>index *buf, i
c:char<span class="Special"> <- </span>get curr, <span class="Constant">contents:offset</span>
color:num<span class="Special"> <- </span>get curr, <span class="Constant">color:offset</span>
<span class="Delimiter">{</span>
<span class="Comment"># damp whites down to grey</span>
white?:bool<span class="Special"> <- </span>equal color, <span class="Constant">7/white</span>
<span class="muControl">break-unless</span> white?
color<span class="Special"> <- </span>copy <span class="Constant">245/grey</span>
<span class="Delimiter">}</span>
print screen, c, color
column<span class="Special"> <- </span>add column, <span class="Constant">1</span>
i<span class="Special"> <- </span>add i, <span class="Constant">1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
<span class="Comment"># print final '.'</span>
print screen, full-stop, <span class="Constant">245/grey</span>
column<span class="Special"> <- </span>add column, <span class="Constant">1</span>
<span class="Delimiter">{</span>
<span class="Comment"># clear rest of current line</span>
line-done?:bool<span class="Special"> <- </span>greater-than column, right
<span class="muControl">break-if</span> line-done?
print screen, space
column<span class="Special"> <- </span>add column, <span class="Constant">1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
]
<span class="muScenario">scenario</span> run-updates-results [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">12/height</span>
<span class="Comment"># define a recipe (no indent for the 'add' line below so column numbers are more obvious)</span>
recipes:text<span class="Special"> <- </span>new <span class="Constant">[ </span>
<span class="Constant">recipe foo [</span>
<span class="Constant">local-scope</span>
<span class="Constant">z:num <- add 2, 2</span>
<span class="Constant">reply z</span>
<span class="Constant">]</span>]
<span class="Comment"># sandbox editor contains an instruction without storing outputs</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, recipes, <span class="Constant">[foo]</span>
<span class="Comment"># run the code in the editors</span>
assume-console [
press F4
]
event-loop screen, console, env
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> .recipe foo [ ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .local-scope ╎0 edit copy delete .</span>
<span class="Constant"> .z:num <- add 2, 2 ╎foo .</span>
<span class="Constant"> .reply z ╎4 .</span>
<span class="Constant"> .] ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎ .</span>
<span class="Constant"> . ╎ .</span>
]
<span class="Comment"># make a change (incrementing one of the args to 'add'), then rerun</span>
assume-console [
left-click <span class="Constant">4</span>, <span class="Constant">28</span> <span class="Comment"># one past the value of the second arg</span>
press backspace
type <span class="Constant">[3]</span>
press F4
]
run [
event-loop screen, console, env
]
<span class="Comment"># check that screen updates the result on the right</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> .recipe foo [ ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .local-scope ╎0 edit copy delete .</span>
<span class="Constant"> .z:num <- add 2, 3 ╎foo .</span>
<span class="Constant"> .reply z ╎5 .</span>
<span class="Constant"> .] ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎ .</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="muScenario">scenario</span> run-instruction-manages-screen-per-sandbox [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">20/height</span>
<span class="Comment"># left editor is empty</span>
<span class="Comment"># right editor contains an instruction</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[]</span>, <span class="Constant">[print-integer screen, 4]</span>
<span class="Comment"># run the code in the editor</span>
assume-console [
press F4
]
run [
event-loop screen, console, env
]
<span class="Comment"># check that it prints a little toy screen</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎0 edit copy delete .</span>
<span class="Constant"> . ╎print-integer screen, 4 .</span>
<span class="Constant"> . ╎screen: .</span>
<span class="Constant"> . ╎ .4 . .</span>
<span class="Constant"> . ╎ . . .</span>
<span class="Constant"> . ╎ . . .</span>
<span class="Constant"> . ╎ . . .</span>
<span class="Constant"> . ╎ . . .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="muRecipe">def</span> editor-contents editor:&:editor<span class="muRecipe"> -> </span>result:text [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
buf:&:buffer<span class="Special"> <- </span>new-buffer <span class="Constant">80</span>
curr:&:duplex-list:char<span class="Special"> <- </span>get *editor, <span class="Constant">data:offset</span>
<span class="Comment"># skip § sentinel</span>
assert curr, <span class="Constant">[editor without data is illegal; must have at least a sentinel]</span>
curr<span class="Special"> <- </span>next curr
<span class="muControl">return-unless</span> curr, <span class="Constant">0</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> curr
c:char<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span>
buf<span class="Special"> <- </span>append buf, c
curr<span class="Special"> <- </span>next curr
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
result<span class="Special"> <- </span>buffer-to-array buf
]
<span class="muScenario">scenario</span> editor-provides-edited-contents [
<span class="Constant">local-scope</span>
assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
e:&:editor<span class="Special"> <- </span>new-editor <span class="Constant">[abc]</span>, screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
assume-console [
left-click <span class="Constant">1</span>, <span class="Constant">2</span>
type <span class="Constant">[def]</span>
]
run [
editor-event-loop screen, console, e
s:text<span class="Special"> <- </span>editor-contents e
<span class="Constant">1</span>:@:char/<span class="Special">raw <- </span>copy *s
]
memory-should-contain [
<span class="Constant">1</span>:array:character<span class="Special"> <- </span><span class="Constant">[abdefc]</span>
]
]
<span class="Comment"># keep the bottom of recipes from scrolling off the screen</span>
<span class="muScenario">scenario</span> scrolling-down-past-bottom-of-recipe-editor [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[]</span>, <span class="Constant">[]</span>
render-all screen, env, render
assume-console [
press enter
press down-arrow
]
event-loop screen, console, env
<span class="Comment"># no scroll</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎ .</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="muScenario">scenario</span> cursor-down-in-recipe-editor [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[]</span>, <span class="Constant">[]</span>
render-all screen, env, render
assume-console [
press enter
press up-arrow
press down-arrow <span class="Comment"># while cursor isn't at bottom</span>
]
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
<span class="Comment"># cursor moves back to bottom</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> .␣ ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎ .</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="Comment"># we'll not use the recipe-editor's 'bottom' element directly, because later</span>
<span class="Comment"># layers will add other stuff to the left side below the editor (error messages)</span>
<span class="muData">container</span> environment [
recipe-bottom:num
]
<span class="muRecipe">after</span> <span class="Constant"><render-recipe-components-end></span> [
*env<span class="Special"> <- </span>put *env, <span class="Constant">recipe-bottom:offset</span>, row
]
<span class="muRecipe">after</span> <span class="Constant"><global-keypress></span> [
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> sandbox-in-focus?
down-arrow?:bool<span class="Special"> <- </span>equal k, <span class="Constant">65516/down-arrow</span>
<span class="muControl">break-unless</span> down-arrow?
recipe-editor:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span>
recipe-cursor-row:num<span class="Special"> <- </span>get *recipe-editor, <span class="Constant">cursor-row:offset</span>
recipe-editor-bottom:num<span class="Special"> <- </span>get *recipe-editor, <span class="Constant">bottom:offset</span>
at-bottom-of-editor?:bool<span class="Special"> <- </span>greater-or-equal recipe-cursor-row, recipe-editor-bottom
<span class="muControl">break-unless</span> at-bottom-of-editor?
more-to-scroll?:bool<span class="Special"> <- </span>more-to-scroll? env, screen
<span class="muControl">break-if</span> more-to-scroll?
<span class="muControl">loop</span> +next-event
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> sandbox-in-focus?
page-down?:bool<span class="Special"> <- </span>equal k, <span class="Constant">65518/page-down</span>
<span class="muControl">break-unless</span> page-down?
more-to-scroll?:bool<span class="Special"> <- </span>more-to-scroll? env, screen
<span class="muControl">break-if</span> more-to-scroll?
<span class="muControl">loop</span> +next-event
<span class="Delimiter">}</span>
]
<span class="muRecipe">after</span> <span class="Constant"><global-type></span> [
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> sandbox-in-focus?
page-down?:bool<span class="Special"> <- </span>equal k, <span class="Constant">6/ctrl-f</span>
<span class="muControl">break-unless</span> page-down?
more-to-scroll?:bool<span class="Special"> <- </span>more-to-scroll? env, screen
<span class="muControl">break-if</span> more-to-scroll?
<span class="muControl">loop</span> +next-event
<span class="Delimiter">}</span>
]
<span class="muRecipe">def</span> more-to-scroll? env:&:environment, screen:&:screen<span class="muRecipe"> -> </span>result:bool [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
recipe-bottom:num<span class="Special"> <- </span>get *env, <span class="Constant">recipe-bottom:offset</span>
height:num<span class="Special"> <- </span>screen-height screen
result<span class="Special"> <- </span>greater-or-equal recipe-bottom, height
]
<span class="muScenario">scenario</span> scrolling-down-past-bottom-of-recipe-editor-2 [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[]</span>, <span class="Constant">[]</span>
render-all screen, env, render
assume-console [
<span class="Comment"># add a line</span>
press enter
<span class="Comment"># cursor back to top line</span>
press up-arrow
<span class="Comment"># try to scroll</span>
press page-down <span class="Comment"># or ctrl-f</span>
]
event-loop screen, console, env
<span class="Comment"># no scroll, and cursor remains at top line</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎ .</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="muScenario">scenario</span> scrolling-down-past-bottom-of-recipe-editor-3 [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[]</span>, <span class="Constant">[ab</span>
<span class="Constant">cd]</span>
render-all screen, env, render
assume-console [
<span class="Comment"># add a line</span>
press enter
<span class="Comment"># switch to sandbox</span>
press ctrl-n
<span class="Comment"># move cursor</span>
press down-arrow
]
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
<span class="Comment"># no scroll on recipe side, cursor moves on sandbox side</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ab .</span>
<span class="Constant"> . ╎␣d .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="Comment"># scrolling through sandboxes</span>
<span class="muScenario">scenario</span> scrolling-down-past-bottom-of-sandbox-editor [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
<span class="Comment"># initialize sandbox side</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[]</span>, <span class="Constant">[add 2, 2]</span>
render-all screen, env, render
assume-console [
<span class="Comment"># create a sandbox</span>
press F4
]
event-loop screen, console, env
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
]
<span class="Comment"># switch to sandbox window and hit 'page-down'</span>
assume-console [
press ctrl-n
press page-down
]
run [
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
]
<span class="Comment"># sandbox editor hidden; first sandbox displayed</span>
<span class="Comment"># cursor moves to first sandbox</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎␣ edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
<span class="Constant"> . ╎4 .</span>
]
<span class="Comment"># hit 'page-up'</span>
assume-console [
press page-up
]
run [
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
]
<span class="Comment"># sandbox editor displays again, cursor is in editor</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎␣ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
]
]
<span class="Comment"># page-down on sandbox side updates render-from to scroll sandboxes</span>
<span class="muRecipe">after</span> <span class="Constant"><global-keypress></span> [
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> sandbox-in-focus?
page-down?:bool<span class="Special"> <- </span>equal k, <span class="Constant">65518/page-down</span>
<span class="muControl">break-unless</span> page-down?
sandbox:&:sandbox<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span>
<span class="muControl">break-unless</span> sandbox
<span class="Comment"># slide down if possible</span>
<span class="Delimiter">{</span>
render-from:num<span class="Special"> <- </span>get *env, <span class="Constant">render-from:offset</span>
number-of-sandboxes:num<span class="Special"> <- </span>get *env, <span class="Constant">number-of-sandboxes:offset</span>
max:num<span class="Special"> <- </span>subtract number-of-sandboxes, <span class="Constant">1</span>
at-end?:bool<span class="Special"> <- </span>greater-or-equal render-from, max
<span class="muControl">jump-if</span> at-end?, +finish-event <span class="Comment"># render nothing</span>
render-from<span class="Special"> <- </span>add render-from, <span class="Constant">1</span>
*env<span class="Special"> <- </span>put *env, <span class="Constant">render-from:offset</span>, render-from
<span class="Delimiter">}</span>
hide-screen screen
screen<span class="Special"> <- </span>render-sandbox-side screen, env, render
show-screen screen
<span class="muControl">jump</span> +finish-event
<span class="Delimiter">}</span>
]
<span class="Comment"># update-cursor takes render-from into account</span>
<span class="muRecipe">after</span> <span class="Constant"><update-cursor-special-cases></span> [
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> sandbox-in-focus?
render-from:num<span class="Special"> <- </span>get *env, <span class="Constant">render-from:offset</span>
scrolling?:bool<span class="Special"> <- </span>greater-or-equal render-from, <span class="Constant">0</span>
<span class="muControl">break-unless</span> scrolling?
cursor-column:num<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">left:offset</span>
screen<span class="Special"> <- </span>move-cursor screen, <span class="Constant">2/row</span>, cursor-column <span class="Comment"># highlighted sandbox will always start at row 2</span>
<span class="muControl">return</span>
<span class="Delimiter">}</span>
]
<span class="Comment"># 'page-up' on sandbox side is like 'page-down': updates render-from when necessary</span>
<span class="muRecipe">after</span> <span class="Constant"><global-keypress></span> [
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> sandbox-in-focus?
page-up?:bool<span class="Special"> <- </span>equal k, <span class="Constant">65519/page-up</span>
<span class="muControl">break-unless</span> page-up?
render-from:num<span class="Special"> <- </span>get *env, <span class="Constant">render-from:offset</span>
at-beginning?:bool<span class="Special"> <- </span>equal render-from, <span class="Constant">-1</span>
<span class="muControl">break-if</span> at-beginning?
render-from<span class="Special"> <- </span>subtract render-from, <span class="Constant">1</span>
*env<span class="Special"> <- </span>put *env, <span class="Constant">render-from:offset</span>, render-from
hide-screen screen
screen<span class="Special"> <- </span>render-sandbox-side screen, env, render
show-screen screen
<span class="muControl">jump</span> +finish-event
<span class="Delimiter">}</span>
]
<span class="Comment"># sandbox belonging to 'env' whose next-sandbox is 'in'</span>
<span class="Comment"># return 0 if there's no such sandbox, either because 'in' doesn't exist in 'env', or because it's the first sandbox</span>
<span class="muRecipe">def</span> previous-sandbox env:&:environment, in:&:sandbox<span class="muRecipe"> -> </span>out:&:sandbox [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
curr:&:sandbox<span class="Special"> <- </span>get *env, <span class="Constant">sandbox:offset</span>
<span class="muControl">return-unless</span> curr, <span class="Constant">0/nil</span>
next:&:sandbox<span class="Special"> <- </span>get *curr, <span class="Constant">next-sandbox:offset</span>
<span class="Delimiter">{</span>
<span class="muControl">return-unless</span> next, <span class="Constant">0/nil</span>
found?:bool<span class="Special"> <- </span>equal next, in
<span class="muControl">break-if</span> found?
curr<span class="Special"> <- </span>copy next
next<span class="Special"> <- </span>get *curr, <span class="Constant">next-sandbox:offset</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
<span class="muControl">return</span> curr
]
<span class="muScenario">scenario</span> scrolling-down-on-recipe-side [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
<span class="Comment"># initialize sandbox side and create a sandbox</span>
recipes:text<span class="Special"> <- </span>new <span class="Constant">[ </span>
<span class="Constant">]</span>
<span class="Comment"># create a sandbox</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, recipes:text, <span class="Constant">[add 2, 2]</span>
render-all screen, env, render
assume-console [
press F4
]
event-loop screen, console, env
<span class="Comment"># hit 'down' in recipe editor</span>
assume-console [
press page-down
]
run [
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
]
<span class="Comment"># cursor moves down on recipe side</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> .␣ ╎ .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
]
]
<span class="muScenario">scenario</span> scrolling-through-multiple-sandboxes [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
<span class="Comment"># initialize environment</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[]</span>, <span class="Constant">[]</span>
render-all screen, env, render
<span class="Comment"># create 2 sandboxes</span>
assume-console [
press ctrl-n
type <span class="Constant">[add 2, 2]</span>
press F4
type <span class="Constant">[add 1, 1]</span>
press F4
]
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎␣ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 1, 1 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎1 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
<span class="Constant"> . ╎4 .</span>
]
<span class="Comment"># hit 'page-down'</span>
assume-console [
press page-down
]
run [
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
]
<span class="Comment"># sandbox editor hidden; first sandbox displayed</span>
<span class="Comment"># cursor moves to first sandbox</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎␣ edit copy delete .</span>
<span class="Constant"> . ╎add 1, 1 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎1 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
<span class="Constant"> . ╎4 .</span>
]
<span class="Comment"># hit 'page-down' again</span>
assume-console [
press page-down
]
run [
event-loop screen, console, env
]
<span class="Comment"># just second sandbox displayed</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎1 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
<span class="Constant"> . ╎4 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
<span class="Comment"># hit 'page-down' again</span>
assume-console [
press page-down
]
run [
event-loop screen, console, env
]
<span class="Comment"># no change</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎1 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
<span class="Constant"> . ╎4 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
<span class="Comment"># hit 'page-up'</span>
assume-console [
press page-up
]
run [
event-loop screen, console, env
]
<span class="Comment"># back to displaying both sandboxes without editor</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 1, 1 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎1 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
<span class="Constant"> . ╎4 .</span>
]
<span class="Comment"># hit 'page-up' again</span>
assume-console [
press page-up
]
run [
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
]
<span class="Comment"># back to displaying both sandboxes as well as editor</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎␣ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 1, 1 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎1 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
<span class="Constant"> . ╎4 .</span>
]
<span class="Comment"># hit 'page-up' again</span>
assume-console [
press page-up
]
run [
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
]
<span class="Comment"># no change</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎␣ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 1, 1 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎1 edit copy delete .</span>
<span class="Constant"> . ╎add 2, 2 .</span>
<span class="Constant"> . ╎4 .</span>
]
]
<span class="muScenario">scenario</span> scrolling-manages-sandbox-index-correctly [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">100/width</span>, <span class="Constant">10/height</span>
<span class="Comment"># initialize environment</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[]</span>, <span class="Constant">[]</span>
render-all screen, env, render
<span class="Comment"># create a sandbox</span>
assume-console [
press ctrl-n
type <span class="Constant">[add 1, 1]</span>
press F4
]
event-loop screen, console, env
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 1, 1 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
<span class="Comment"># hit 'page-down' and 'page-up' a couple of times. sandbox index should be stable</span>
assume-console [
press page-down
]
run [
event-loop screen, console, env
]
<span class="Comment"># sandbox editor hidden; first sandbox displayed</span>
<span class="Comment"># cursor moves to first sandbox</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 1, 1 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
<span class="Comment"># hit 'page-up' again</span>
assume-console [
press page-up
]
run [
event-loop screen, console, env
]
<span class="Comment"># back to displaying both sandboxes as well as editor</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 1, 1 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
<span class="Comment"># hit 'page-down'</span>
assume-console [
press page-down
]
run [
event-loop screen, console, env
]
<span class="Comment"># sandbox editor hidden; first sandbox displayed</span>
<span class="Comment"># cursor moves to first sandbox</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎0 edit copy delete .</span>
<span class="Constant"> . ╎add 1, 1 .</span>
<span class="Constant"> . ╎2 .</span>
<span class="Constant"> . ╎─────────────────────────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
]
]
</pre>
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