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Diffstat (limited to 'sandbox/004-programming-environment.mu')
| -rw-r--r-- | sandbox/004-programming-environment.mu | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/sandbox/004-programming-environment.mu b/sandbox/004-programming-environment.mu deleted file mode 100644 index 1454144b..00000000 --- a/sandbox/004-programming-environment.mu +++ /dev/null @@ -1,268 +0,0 @@ -## putting the environment together out of editors - -def! main [ - local-scope - open-console - clear-screen null/screen # non-scrolling app - env:&:environment <- new-programming-environment null/filesystem, null/screen - render-all null/screen, env, render - event-loop null/screen, null/console, env, null/filesystem -] - -container environment [ - current-sandbox:&:editor -] - -def new-programming-environment resources:&:resources, screen:&:screen, test-sandbox-editor-contents:text -> result:&:environment [ - local-scope - load-inputs - width:num <- screen-width screen - result <- new environment:type - # sandbox editor - current-sandbox:&:editor <- new-editor test-sandbox-editor-contents, 0/left, width/right - *result <- put *result, current-sandbox:offset, current-sandbox - <programming-environment-initialization> -] - -def event-loop screen:&:screen, console:&:console, env:&:environment, resources:&:resources -> screen:&:screen, console:&:console, env:&:environment, resources:&:resources [ - local-scope - load-inputs - current-sandbox:&:editor <- get *env, current-sandbox:offset - # if we fall behind we'll stop updating the screen, but then we have to - # render the entire screen when we catch up. - # todo: test this - render-all-on-no-more-events?:bool <- copy false - { - # looping over each (keyboard or touch) event as it occurs - +next-event - e:event, found?:bool, quit?:bool, console <- read-event console - loop-unless found? - break-if quit? # only in tests - trace 10, [app], [next-event] - <handle-event> - # check for global events that will trigger regardless of which editor has focus - { - k:num, is-keycode?:bool <- maybe-convert e:event, keycode:variant - break-unless is-keycode? - <global-keypress> - } - { - c:char, is-unicode?:bool <- maybe-convert e:event, text:variant - break-unless is-unicode? - <global-type> - } - # 'touch' event - { - t:touch-event, is-touch?:bool <- maybe-convert e:event, touch:variant - break-unless is-touch? - # ignore all but 'left-click' events for now - # todo: test this - touch-type:num <- get t, type:offset - is-left-click?:bool <- equal touch-type, 65513/mouse-left - loop-unless is-left-click?, +next-event - click-row:num <- get t, row:offset - click-column:num <- get t, column:offset - # later exceptions for non-editor touches will go here - <global-touch> - move-cursor current-sandbox, screen, t - screen <- update-cursor screen, current-sandbox, env - loop +next-event - } - # 'resize' event - redraw editor - # todo: test this after supporting resize in assume-console - { - r:resize-event, is-resize?:bool <- maybe-convert e:event, resize:variant - break-unless is-resize? - env, screen <- resize screen, env - screen <- render-all screen, env, render-without-moving-cursor - loop +next-event - } - # not global and not a touch event - { - render?:bool <- handle-keyboard-event screen, current-sandbox, e:event - # try to batch up rendering if there are more events queued up - render-all-on-no-more-events? <- or render-all-on-no-more-events?, render? - more-events?:bool <- has-more-events? console - { - break-if more-events? - break-unless render-all-on-no-more-events? - render-all-on-no-more-events? <- copy false - screen <- render-all screen, env, render - } - screen <- update-cursor screen, current-sandbox, env - } - loop - } -] - -def resize screen:&:screen, env:&:environment -> env:&:environment, screen:&:screen [ - local-scope - load-inputs - clear-screen screen # update screen dimensions - width:num <- screen-width screen - # update sandbox editor - current-sandbox:&:editor <- get *env, current-sandbox:offset - right:num <- subtract width, 1 - *current-sandbox <- put *current-sandbox right:offset, right - # reset cursor - *current-sandbox <- put *current-sandbox, cursor-row:offset, 1 - *current-sandbox <- put *current-sandbox, cursor-column:offset, 0 -] - -# Variant of 'render' that updates cursor-row and cursor-column based on -# before-cursor (rather than the other way around). If before-cursor moves -# off-screen, it resets cursor-row and cursor-column. -def render-without-moving-cursor screen:&:screen, editor:&:editor -> last-row:num, last-column:num, screen:&:screen, editor:&:editor [ - local-scope - load-inputs - return-unless editor, 1/top, 0/left - left:num <- get *editor, left:offset - screen-height:num <- screen-height screen - right:num <- get *editor, right:offset - curr:&:duplex-list:char <- get *editor, top-of-screen:offset - prev:&:duplex-list:char <- copy curr # just in case curr becomes null and we can't compute prev - curr <- next curr - color:num <- copy 7/white - row:num <- copy 1/top - column:num <- copy left - # save before-cursor - old-before-cursor:&:duplex-list:char <- get *editor, before-cursor:offset - # initialze cursor-row/cursor-column/before-cursor to the top of the screen - # by default - *editor <- put *editor, cursor-row:offset, row - *editor <- put *editor, cursor-column:offset, column - top-of-screen:&:duplex-list:char <- get *editor, top-of-screen:offset - *editor <- put *editor, before-cursor:offset, top-of-screen - screen <- move-cursor screen, row, column - { - +next-character - break-unless curr - off-screen?:bool <- greater-or-equal row, screen-height - break-if off-screen? - # if we find old-before-cursor still on the new resized screen, update - # editor.cursor-row and editor.cursor-column based on - # old-before-cursor - { - at-cursor?:bool <- equal old-before-cursor, prev - break-unless at-cursor? - *editor <- put *editor, cursor-row:offset, row - *editor <- put *editor, cursor-column:offset, column - *editor <- put *editor, before-cursor:offset, old-before-cursor - } - c:char <- get *curr, value:offset - <character-c-received> - { - # newline? move to left rather than 0 - newline?:bool <- equal c, 10/newline - break-unless newline? - # clear rest of line in this window - clear-line-until screen, right - # skip to next line - row <- add row, 1 - column <- copy left - screen <- move-cursor screen, row, column - curr <- next curr - prev <- next prev - loop +next-character - } - { - # at right? wrap. even if there's only one more letter left; we need - # room for clicking on the cursor after it. - at-right?:bool <- equal column, right - break-unless at-right? - # print wrap icon - wrap-icon:char <- copy 8617/loop-back-to-left - print screen, wrap-icon, 245/grey - column <- copy left - row <- add row, 1 - screen <- move-cursor screen, row, column - # don't increment curr - loop +next-character - } - print screen, c, color - curr <- next curr - prev <- next prev - column <- add column, 1 - loop - } - # save first character off-screen - *editor <- put *editor, bottom-of-screen:offset, curr - *editor <- put *editor, bottom:offset, row - return row, column -] - -type render-recipe = (recipe (address screen) (address editor) -> number number (address screen) (address editor)) - -def render-all screen:&:screen, env:&:environment, render-editor:render-recipe -> screen:&:screen, env:&:environment [ - local-scope - load-inputs - trace 10, [app], [render all] - # top menu - trace 11, [app], [render top menu] - width:num <- screen-width screen - draw-horizontal screen, 0, 0/left, width, 32/space, 0/black, 238/grey - button-start:num <- subtract width, 20 - button-on-screen?:bool <- greater-or-equal button-start, 0 - assert button-on-screen?, [screen too narrow for menu] - screen <- move-cursor screen, 0/row, button-start - print screen, [ run (F4) ], 255/white, 161/reddish - # - screen <- render-sandbox-side screen, env, render-editor - <end-render-components> # no early returns permitted - # - current-sandbox:&:editor <- get *env, current-sandbox:offset - screen <- update-cursor screen, current-sandbox, env -] - -# replaced in a later layer -def render-sandbox-side screen:&:screen, env:&:environment, render-editor:render-recipe -> screen:&:screen, env:&:environment [ - local-scope - load-inputs - trace 11, [app], [render sandboxes] - old-top-idx:num <- save-top-idx screen - current-sandbox:&:editor <- get *env, current-sandbox:offset - left:num <- get *current-sandbox, left:offset - right:num <- get *current-sandbox, right:offset - row:num, column:num, screen, current-sandbox <- call render-editor, screen, current-sandbox - # draw solid line after code (you'll see why in later layers) - draw-horizontal screen, row, left, right - row <- add row, 1 - clear-screen-from screen, row, left, left, right - # - assert-no-scroll screen, old-top-idx -] - -def update-cursor screen:&:screen, current-sandbox:&:editor, env:&:environment -> screen:&:screen [ - local-scope - load-inputs - <update-cursor-special-cases> - cursor-row:num <- get *current-sandbox, cursor-row:offset - cursor-column:num <- get *current-sandbox, cursor-column:offset - screen <- move-cursor screen, cursor-row, cursor-column -] - -scenario backspace-over-text [ - local-scope - trace-until 100/app # trace too long - assume-screen 50/width, 15/height - # recipes.mu is empty - assume-resources [ - ] - # sandbox editor contains an instruction without storing outputs - env:&:environment <- new-programming-environment resources, screen, [] - render-all screen, env, render - # run the code in the editors - assume-console [ - type [a] - press backspace - ] - run [ - event-loop screen, console, env, resources - 10:num/raw <- get *screen, cursor-row:offset - 11:num/raw <- get *screen, cursor-column:offset - ] - memory-should-contain [ - 10 <- 1 - 11 <- 0 - ] -] |