diff options
Diffstat (limited to 'html/edit/011-editor-undo.mu.html')
| -rw-r--r-- | html/edit/011-editor-undo.mu.html | 738 |
1 files changed, 369 insertions, 369 deletions
diff --git a/html/edit/011-editor-undo.mu.html b/html/edit/011-editor-undo.mu.html index 801ca648..d5d66d09 100644 --- a/html/edit/011-editor-undo.mu.html +++ b/html/edit/011-editor-undo.mu.html @@ -46,13 +46,13 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muData">container</span> insert-operation [ before-row:number before-column:number - before-top-of-screen:address:duplex-list:character + before-top-of-screen:address:shared:duplex-list:character after-row:number after-column:number - after-top-of-screen:address:duplex-list:character + after-top-of-screen:address:shared:duplex-list:character <span class="Comment"># inserted text is from 'insert-from' until 'insert-until'; list doesn't have to terminate</span> - insert-from:address:duplex-list:character - insert-until:address:duplex-list:character + insert-from:address:shared:duplex-list:character + insert-until:address:shared:duplex-list:character tag:number <span class="Comment"># event causing this operation; might be used to coalesce runs of similar events</span> <span class="Comment"># 0: no coalesce (enter+indent)</span> <span class="Comment"># 1: regular alphanumeric characters</span> @@ -61,10 +61,10 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muData">container</span> move-operation [ before-row:number before-column:number - before-top-of-screen:address:duplex-list:character + before-top-of-screen:address:shared:duplex-list:character after-row:number after-column:number - after-top-of-screen:address:duplex-list:character + after-top-of-screen:address:shared:duplex-list:character tag:number <span class="Comment"># event causing this operation; might be used to coalesce runs of similar events</span> <span class="Comment"># 0: no coalesce (touch events, etc)</span> <span class="Comment"># 1: left arrow</span> @@ -76,13 +76,13 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muData">container</span> delete-operation [ before-row:number before-column:number - before-top-of-screen:address:duplex-list:character + before-top-of-screen:address:shared:duplex-list:character after-row:number after-column:number - after-top-of-screen:address:duplex-list:character - deleted-text:address:duplex-list:character - delete-from:address:duplex-list:character - delete-until:address:duplex-list:character + after-top-of-screen:address:shared:duplex-list:character + deleted-text:address:shared:duplex-list:character + delete-from:address:shared:duplex-list:character + delete-until:address:shared:duplex-list:character tag:number <span class="Comment"># event causing this operation; might be used to coalesce runs of similar events</span> <span class="Comment"># 0: no coalesce (ctrl-k, ctrl-u)</span> <span class="Comment"># 1: backspace</span> @@ -91,8 +91,8 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Comment"># every editor accumulates a list of operations to undo/redo</span> <span class="muData">container</span> editor-data [ - undo:address:list:address:operation - redo:address:list:address:operation + undo:address:shared:list:address:shared:operation + redo:address:shared:list:address:shared:operation ] <span class="Comment"># ctrl-z - undo operation</span> @@ -100,11 +100,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Delimiter">{</span> undo?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">26/ctrl-z</span> <span class="muControl">break-unless</span> undo? - undo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + undo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> <span class="muControl">break-unless</span> *undo - op:address:operation<span class="Special"> <- </span>first *undo + op:address:shared:operation<span class="Special"> <- </span>first *undo *undo<span class="Special"> <- </span>rest *undo - redo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">redo:offset</span> + redo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">redo:offset</span> *redo<span class="Special"> <- </span>push op, *redo <span class="Constant"> <handle-undo></span> <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> @@ -116,11 +116,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Delimiter">{</span> redo?:boolean<span class="Special"> <- </span>equal *c, <span class="Constant">25/ctrl-y</span> <span class="muControl">break-unless</span> redo? - redo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">redo:offset</span> + redo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">redo:offset</span> <span class="muControl">break-unless</span> *redo - op:address:operation<span class="Special"> <- </span>first *redo + op:address:shared:operation<span class="Special"> <- </span>first *redo *redo<span class="Special"> <- </span>rest *redo - undo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + undo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> *undo<span class="Special"> <- </span>push op, *undo <span class="Constant"> <handle-redo></span> <span class="muControl">reply</span> screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>, <span class="Constant">1/go-render</span> @@ -132,19 +132,19 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-typing [ <span class="Comment"># create an editor and type a character</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data assume-console [ type <span class="Constant">[0]</span> ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># character should be gone</span> screen-should-contain [ @@ -158,7 +158,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -170,34 +170,34 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Comment"># save operation to undo</span> <span class="muRecipe">after</span> <span class="Constant"><insert-character-begin></span> [ - top-before:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> - cursor-before:address:duplex-list:character<span class="Special"> <- </span>copy *before-cursor + top-before:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + cursor-before:address:shared:duplex-list:character<span class="Special"> <- </span>copy *before-cursor ] <span class="muRecipe">before</span> <span class="Constant"><insert-character-end></span> [ - top-after:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> - undo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + top-after:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + undo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> <span class="Delimiter">{</span> <span class="Comment"># if previous operation was an insert, coalesce this operation with it</span> <span class="muControl">break-unless</span> *undo - op:address:operation<span class="Special"> <- </span>first *undo + op:address:shared:operation<span class="Special"> <- </span>first *undo typing:address:insert-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">typing:variant</span> <span class="muControl">break-unless</span> typing previous-coalesce-tag:number<span class="Special"> <- </span>get *typing, <span class="Constant">tag:offset</span> <span class="muControl">break-unless</span> previous-coalesce-tag - insert-until:address:address:duplex-list:character<span class="Special"> <- </span>get-address *typing, <span class="Constant">insert-until:offset</span> + insert-until:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *typing, <span class="Constant">insert-until:offset</span> *insert-until<span class="Special"> <- </span>next *before-cursor after-row:address:number<span class="Special"> <- </span>get-address *typing, <span class="Constant">after-row:offset</span> *after-row<span class="Special"> <- </span>copy *cursor-row after-column:address:number<span class="Special"> <- </span>get-address *typing, <span class="Constant">after-column:offset</span> *after-column<span class="Special"> <- </span>copy *cursor-column - after-top:address:address:duplex-list:character<span class="Special"> <- </span>get-address *typing, <span class="Constant">after-top-of-screen:offset</span> + after-top:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *typing, <span class="Constant">after-top-of-screen:offset</span> *after-top<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> <span class="muControl">break</span> <span class="Constant">+done-adding-insert-operation:label</span> <span class="Delimiter">}</span> <span class="Comment"># if not, create a new operation</span> - insert-from:address:duplex-list:character<span class="Special"> <- </span>next cursor-before - insert-to:address:duplex-list:character<span class="Special"> <- </span>next insert-from - op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + insert-from:address:shared:duplex-list:character<span class="Special"> <- </span>next cursor-before + insert-to:address:shared:duplex-list:character<span class="Special"> <- </span>next insert-from + op:address:shared:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> *op<span class="Special"> <- </span>merge <span class="Constant">0/insert-operation</span>, save-row/<span class="muRecipe">before</span>, save-column/<span class="muRecipe">before</span>, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, insert-from, insert-to, <span class="Constant">1/coalesce</span> editor<span class="Special"> <- </span>add-operation editor, op <span class="Constant"> +done-adding-insert-operation</span> @@ -207,15 +207,15 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muRecipe">after</span> <span class="Constant"><insert-enter-begin></span> [ cursor-row-before:number<span class="Special"> <- </span>copy *cursor-row cursor-column-before:number<span class="Special"> <- </span>copy *cursor-column - top-before:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> - cursor-before:address:duplex-list:character<span class="Special"> <- </span>copy *before-cursor + top-before:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + cursor-before:address:shared:duplex-list:character<span class="Special"> <- </span>copy *before-cursor ] <span class="muRecipe">before</span> <span class="Constant"><insert-enter-end></span> [ - top-after:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + top-after:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> <span class="Comment"># never coalesce</span> - insert-from:address:duplex-list:character<span class="Special"> <- </span>next cursor-before - insert-to:address:duplex-list:character<span class="Special"> <- </span>next *before-cursor - op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + insert-from:address:shared:duplex-list:character<span class="Special"> <- </span>next cursor-before + insert-to:address:shared:duplex-list:character<span class="Special"> <- </span>next *before-cursor + op:address:shared:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> *op<span class="Special"> <- </span>merge <span class="Constant">0/insert-operation</span>, cursor-row-before, cursor-column-before, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, insert-from, insert-to, <span class="Constant">0/never-coalesce</span> editor<span class="Special"> <- </span>add-operation editor, op ] @@ -224,12 +224,12 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Comment"># redo stack, because it's now obsolete.</span> <span class="Comment"># Beware: since we're counting cursor moves as operations, this means just</span> <span class="Comment"># moving the cursor can lose work on the undo stack.</span> -<span class="muRecipe">recipe</span> add-operation editor:address:editor-data, op:address:operation<span class="muRecipe"> -> </span>editor:address:editor-data [ +<span class="muRecipe">recipe</span> add-operation editor:address:shared:editor-data, op:address:shared:operation<span class="muRecipe"> -> </span>editor:address:shared:editor-data [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> - undo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + undo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> *undo<span class="Special"> <- </span>push op *undo - redo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">redo:offset</span> + redo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">redo:offset</span> *redo<span class="Special"> <- </span>copy <span class="Constant">0</span> <span class="muControl">reply</span> editor/same-as-ingredient:<span class="Constant">0</span> ] @@ -238,14 +238,14 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Delimiter">{</span> typing:address:insert-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">typing:variant</span> <span class="muControl">break-unless</span> typing - start:address:duplex-list:character<span class="Special"> <- </span>get *typing, <span class="Constant">insert-from:offset</span> - end:address:duplex-list:character<span class="Special"> <- </span>get *typing, <span class="Constant">insert-until:offset</span> + start:address:shared:duplex-list:character<span class="Special"> <- </span>get *typing, <span class="Constant">insert-from:offset</span> + end:address:shared:duplex-list:character<span class="Special"> <- </span>get *typing, <span class="Constant">insert-until:offset</span> <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> *before-cursor<span class="Special"> <- </span>prev start remove-between *before-cursor, end *cursor-row<span class="Special"> <- </span>get *typing, <span class="Constant">before-row:offset</span> *cursor-column<span class="Special"> <- </span>get *typing, <span class="Constant">before-column:offset</span> - top:address:address:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + top:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> *top<span class="Special"> <- </span>get *typing, <span class="Constant">before-top-of-screen:offset</span> <span class="Delimiter">}</span> ] @@ -253,19 +253,19 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-typing-multiple [ <span class="Comment"># create an editor and type multiple characters</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data assume-console [ type <span class="Constant">[012]</span> ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># all characters must be gone</span> screen-should-contain [ @@ -279,14 +279,14 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-typing-multiple-2 [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[a]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># type some characters</span> assume-console [ type <span class="Constant">[012]</span> ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> .012a .</span> @@ -298,7 +298,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># back to original text</span> screen-should-contain [ @@ -312,7 +312,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[3]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -325,15 +325,15 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-typing-enter [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[ abc]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[ abc]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># new line</span> assume-console [ left-click <span class="Constant">1</span>, <span class="Constant">8</span> press enter ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> . abc .</span> @@ -342,8 +342,8 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Constant"> . .</span> ] <span class="Comment"># line is indented</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> @@ -353,10 +353,10 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">5</span> @@ -373,7 +373,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -388,14 +388,14 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-redo-typing [ <span class="Comment"># create an editor, type something, undo</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[a]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data assume-console [ type <span class="Constant">[012]</span> press ctrl-z ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> .a .</span> @@ -407,7 +407,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># all characters must be back</span> screen-should-contain [ @@ -421,7 +421,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[3]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -435,13 +435,13 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Delimiter">{</span> typing:address:insert-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">typing:variant</span> <span class="muControl">break-unless</span> typing - insert-from:address:duplex-list:character<span class="Special"> <- </span>get *typing, <span class="Constant">insert-from:offset</span> <span class="Comment"># ignore insert-to because it's already been spliced away</span> + insert-from:address:shared:duplex-list:character<span class="Special"> <- </span>get *typing, <span class="Constant">insert-from:offset</span> <span class="Comment"># ignore insert-to because it's already been spliced away</span> <span class="Comment"># assert insert-to matches next(*before-cursor)</span> insert-range *before-cursor, insert-from <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> *cursor-row<span class="Special"> <- </span>get *typing, <span class="Constant">after-row:offset</span> *cursor-column<span class="Special"> <- </span>get *typing, <span class="Constant">after-column:offset</span> - top:address:address:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + top:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> *top<span class="Special"> <- </span>get *typing, <span class="Constant">after-top-of-screen:offset</span> <span class="Delimiter">}</span> ] @@ -449,14 +449,14 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-redo-typing-empty [ <span class="Comment"># create an editor, type something, undo</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data assume-console [ type <span class="Constant">[012]</span> press ctrl-z ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> . .</span> @@ -468,7 +468,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># all characters must be back</span> screen-should-contain [ @@ -482,7 +482,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[3]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -495,21 +495,21 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-work-clears-redo-stack [ <span class="Comment"># create an editor with some text, do some work, undo</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data assume-console [ type <span class="Constant">[1]</span> press ctrl-z ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># do some more work</span> assume-console [ type <span class="Constant">[0]</span> ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> .0abc .</span> @@ -522,7 +522,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># nothing should happen</span> screen-should-contain [ @@ -537,9 +537,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-redo-typing-and-enter-and-tab [ <span class="Comment"># create an editor</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># insert some text and tabs, hit enter, some more text and tabs</span> assume-console [ press tab @@ -550,7 +550,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press tab type <span class="Constant">[efg]</span> ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> . ab cd .</span> @@ -558,8 +558,8 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> <span class="Constant"> . .</span> ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">7</span> @@ -569,11 +569,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># typing in second line deleted, but not indent</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> @@ -590,11 +590,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># indent and newline deleted</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">8</span> @@ -610,11 +610,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># empty screen</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> @@ -630,11 +630,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># first line inserted</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">8</span> @@ -650,11 +650,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># newline and indent inserted</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> @@ -671,11 +671,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># indent and newline deleted</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">7</span> @@ -694,24 +694,24 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-touch [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># move the cursor</span> assume-console [ left-click <span class="Constant">3</span>, <span class="Constant">1</span> ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># click undone</span> memory-should-contain [ @@ -723,7 +723,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -737,19 +737,19 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muRecipe">after</span> <span class="Constant"><move-cursor-begin></span> [ before-cursor-row:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-row:offset</span> before-cursor-column:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-column:offset</span> - before-top-of-screen:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + before-top-of-screen:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> ] <span class="muRecipe">before</span> <span class="Constant"><move-cursor-end></span> [ after-cursor-row:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-row:offset</span> after-cursor-column:number<span class="Special"> <- </span>get *editor, <span class="Constant">cursor-column:offset</span> - after-top-of-screen:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + after-top-of-screen:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> <span class="Delimiter">{</span> <span class="muControl">break-unless</span> undo-coalesce-tag <span class="Comment"># if previous operation was also a move, and also had the same coalesce</span> <span class="Comment"># tag, coalesce with it</span> - undo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + undo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> <span class="muControl">break-unless</span> *undo - op:address:operation<span class="Special"> <- </span>first *undo + op:address:shared:operation<span class="Special"> <- </span>first *undo move:address:move-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">move:variant</span> <span class="muControl">break-unless</span> move previous-coalesce-tag:number<span class="Special"> <- </span>get *move, <span class="Constant">tag:offset</span> @@ -759,11 +759,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } *after-row<span class="Special"> <- </span>copy after-cursor-row after-column:address:number<span class="Special"> <- </span>get-address *move, <span class="Constant">after-column:offset</span> *after-column<span class="Special"> <- </span>copy after-cursor-column - after-top:address:address:duplex-list:character<span class="Special"> <- </span>get-address *move, <span class="Constant">after-top-of-screen:offset</span> + after-top:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *move, <span class="Constant">after-top-of-screen:offset</span> *after-top<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> <span class="muControl">break</span> <span class="Constant">+done-adding-move-operation:label</span> <span class="Delimiter">}</span> - op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + op:address:shared:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> *op<span class="Special"> <- </span>merge <span class="Constant">1/move-operation</span>, before-cursor-row, before-cursor-column, before-top-of-screen, after-cursor-row, after-cursor-column, after-top-of-screen, undo-coalesce-tag editor<span class="Special"> <- </span>add-operation editor, op <span class="Constant"> +done-adding-move-operation</span> @@ -774,7 +774,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } move:address:move-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">move:variant</span> <span class="muControl">break-unless</span> move <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> - top:address:address:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + top:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> *cursor-row<span class="Special"> <- </span>get *move, <span class="Constant">before-row:offset</span> *cursor-column<span class="Special"> <- </span>get *move, <span class="Constant">before-column:offset</span> *top<span class="Special"> <- </span>get *move, <span class="Constant">before-top-of-screen:offset</span> @@ -785,18 +785,18 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Comment"># screen has 1 line for menu + 3 lines</span> assume-screen <span class="Constant">5/width</span>, <span class="Constant">4/height</span> <span class="Comment"># editor contains a wrapped line</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> <span class="Constant">b</span> <span class="Constant">cdefgh]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">5/right</span> <span class="Comment"># position cursor at end of screen and try to move right</span> assume-console [ left-click <span class="Constant">3</span>, <span class="Constant">3</span> press right-arrow ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> <span class="Comment"># screen scrolls</span> screen-should-contain [ <span class="Constant"> . .</span> @@ -813,9 +813,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># cursor moved back</span> memory-should-contain [ @@ -834,7 +834,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -847,25 +847,25 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-left-arrow [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># move the cursor</span> assume-console [ left-click <span class="Constant">3</span>, <span class="Constant">1</span> press left-arrow ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># cursor moves back</span> memory-should-contain [ @@ -877,7 +877,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -891,19 +891,19 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-up-arrow [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># move the cursor</span> assume-console [ left-click <span class="Constant">3</span>, <span class="Constant">1</span> press up-arrow ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> @@ -913,9 +913,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># cursor moves back</span> memory-should-contain [ @@ -927,7 +927,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -941,25 +941,25 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-down-arrow [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># move the cursor</span> assume-console [ left-click <span class="Constant">2</span>, <span class="Constant">1</span> press down-arrow ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># cursor moves back</span> memory-should-contain [ @@ -971,7 +971,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -985,27 +985,27 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-ctrl-f [ <span class="Comment"># create an editor with multiple pages of text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> <span class="Constant">b</span> <span class="Constant">c</span> <span class="Constant">d</span> <span class="Constant">e</span> <span class="Constant">f]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># scroll the page</span> assume-console [ press ctrl-f ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># screen should again show page 1</span> screen-should-contain [ @@ -1020,27 +1020,27 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-page-down [ <span class="Comment"># create an editor with multiple pages of text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> <span class="Constant">b</span> <span class="Constant">c</span> <span class="Constant">d</span> <span class="Constant">e</span> <span class="Constant">f]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># scroll the page</span> assume-console [ press page-down ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># screen should again show page 1</span> screen-should-contain [ @@ -1055,28 +1055,28 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-ctrl-b [ <span class="Comment"># create an editor with multiple pages of text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> <span class="Constant">b</span> <span class="Constant">c</span> <span class="Constant">d</span> <span class="Constant">e</span> <span class="Constant">f]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># scroll the page down and up</span> assume-console [ press page-down press ctrl-b ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># screen should again show page 2</span> screen-should-contain [ @@ -1091,28 +1091,28 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-page-up [ <span class="Comment"># create an editor with multiple pages of text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[a</span> <span class="Constant">b</span> <span class="Constant">c</span> <span class="Constant">d</span> <span class="Constant">e</span> <span class="Constant">f]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># scroll the page down and up</span> assume-console [ press page-down press page-up ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># screen should again show page 2</span> screen-should-contain [ @@ -1127,25 +1127,25 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-ctrl-a [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># move the cursor, then to start of line</span> assume-console [ left-click <span class="Constant">2</span>, <span class="Constant">1</span> press ctrl-a ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># cursor moves back</span> memory-should-contain [ @@ -1157,7 +1157,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -1171,25 +1171,25 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-home [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># move the cursor, then to start of line</span> assume-console [ left-click <span class="Constant">2</span>, <span class="Constant">1</span> press home ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># cursor moves back</span> memory-should-contain [ @@ -1201,7 +1201,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -1215,25 +1215,25 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-ctrl-e [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># move the cursor, then to start of line</span> assume-console [ left-click <span class="Constant">2</span>, <span class="Constant">1</span> press ctrl-e ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># cursor moves back</span> memory-should-contain [ @@ -1245,7 +1245,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -1259,25 +1259,25 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-end [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># move the cursor, then to start of line</span> assume-console [ left-click <span class="Constant">2</span>, <span class="Constant">1</span> press end ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># undo</span> assume-console [ press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># cursor moves back</span> memory-should-contain [ @@ -1289,7 +1289,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -1303,17 +1303,17 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-separates-undo-insert-from-undo-cursor-move [ <span class="Comment"># create an editor, type some text, move the cursor, type some more text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data assume-console [ type <span class="Constant">[abc]</span> left-click <span class="Constant">1</span>, <span class="Constant">1</span> type <span class="Constant">[d]</span> ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> .adbc .</span> @@ -1329,9 +1329,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># last letter typed is deleted</span> screen-should-contain [ @@ -1349,9 +1349,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># no change to screen; cursor moves</span> screen-should-contain [ @@ -1369,9 +1369,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># screen empty</span> screen-should-contain [ @@ -1389,9 +1389,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># first insert</span> screen-should-contain [ @@ -1409,9 +1409,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># cursor moves</span> screen-should-contain [ @@ -1429,9 +1429,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># second insert</span> screen-should-contain [ @@ -1449,11 +1449,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-multiple-arrows-in-the-same-direction [ <span class="Comment"># create an editor with some text</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># move the cursor</span> assume-console [ left-click <span class="Constant">2</span>, <span class="Constant">1</span> @@ -1461,9 +1461,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press right-arrow press up-arrow ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> @@ -1473,9 +1473,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># up-arrow is undone</span> memory-should-contain [ @@ -1487,9 +1487,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># both right-arrows are undone</span> memory-should-contain [ @@ -1503,24 +1503,24 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-redo-touch [ <span class="Comment"># create an editor with some text, click on a character, undo</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def</span> <span class="Constant">ghi]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data assume-console [ left-click <span class="Constant">3</span>, <span class="Constant">1</span> press ctrl-z ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># redo</span> assume-console [ press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> ] <span class="Comment"># cursor moves to left-click</span> memory-should-contain [ @@ -1532,7 +1532,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -1550,7 +1550,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> *cursor-row<span class="Special"> <- </span>get *move, <span class="Constant">after-row:offset</span> *cursor-column<span class="Special"> <- </span>get *move, <span class="Constant">after-column:offset</span> - top:address:address:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + top:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> *top<span class="Special"> <- </span>get *move, <span class="Constant">after-top-of-screen:offset</span> <span class="Delimiter">}</span> ] @@ -1560,24 +1560,24 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-and-redo-backspace [ <span class="Comment"># create an editor</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># insert some text and hit backspace</span> assume-console [ type <span class="Constant">[abc]</span> press backspace press backspace ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> .a .</span> <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> <span class="Constant"> . .</span> ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> @@ -1587,10 +1587,10 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">3</span> @@ -1606,10 +1606,10 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> @@ -1624,38 +1624,38 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Comment"># save operation to undo</span> <span class="muRecipe">after</span> <span class="Constant"><backspace-character-begin></span> [ - top-before:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + top-before:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> ] <span class="muRecipe">before</span> <span class="Constant"><backspace-character-end></span> [ <span class="Delimiter">{</span> <span class="muControl">break-unless</span> backspaced-cell <span class="Comment"># backspace failed; don't add an undo operation</span> - top-after:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> - undo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + top-after:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + undo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> <span class="Delimiter">{</span> <span class="Comment"># if previous operation was an insert, coalesce this operation with it</span> <span class="muControl">break-unless</span> *undo - op:address:operation<span class="Special"> <- </span>first *undo + op:address:shared:operation<span class="Special"> <- </span>first *undo deletion:address:delete-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">delete:variant</span> <span class="muControl">break-unless</span> deletion previous-coalesce-tag:number<span class="Special"> <- </span>get *deletion, <span class="Constant">tag:offset</span> coalesce?:boolean<span class="Special"> <- </span>equal previous-coalesce-tag, <span class="Constant">1/coalesce-backspace</span> <span class="muControl">break-unless</span> coalesce? - delete-from:address:address:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">delete-from:offset</span> + delete-from:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">delete-from:offset</span> *delete-from<span class="Special"> <- </span>copy *before-cursor - backspaced-so-far:address:address:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">deleted-text:offset</span> + backspaced-so-far:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">deleted-text:offset</span> insert-range backspaced-cell, *backspaced-so-far *backspaced-so-far<span class="Special"> <- </span>copy backspaced-cell after-row:address:number<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-row:offset</span> *after-row<span class="Special"> <- </span>copy *cursor-row after-column:address:number<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-column:offset</span> *after-column<span class="Special"> <- </span>copy *cursor-column - after-top:address:address:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-top-of-screen:offset</span> + after-top:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-top-of-screen:offset</span> *after-top<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> <span class="muControl">break</span> <span class="Constant">+done-adding-backspace-operation:label</span> <span class="Delimiter">}</span> <span class="Comment"># if not, create a new operation</span> - op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> - deleted-until:address:duplex-list:character<span class="Special"> <- </span>next *before-cursor + op:address:shared:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + deleted-until:address:shared:duplex-list:character<span class="Special"> <- </span>next *before-cursor *op<span class="Special"> <- </span>merge <span class="Constant">2/delete-operation</span>, save-row/<span class="muRecipe">before</span>, save-column/<span class="muRecipe">before</span>, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, backspaced-cell/deleted, *before-cursor/delete-from, deleted-until, <span class="Constant">1/coalesce-backspace</span> editor<span class="Special"> <- </span>add-operation editor, op <span class="Constant"> +done-adding-backspace-operation</span> @@ -1666,17 +1666,17 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Delimiter">{</span> deletion:address:delete-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">delete:variant</span> <span class="muControl">break-unless</span> deletion - start2:address:address:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">data:offset</span> - anchor:address:duplex-list:character<span class="Special"> <- </span>get *deletion, <span class="Constant">delete-from:offset</span> + start2:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">data:offset</span> + anchor:address:shared:duplex-list:character<span class="Special"> <- </span>get *deletion, <span class="Constant">delete-from:offset</span> <span class="muControl">break-unless</span> anchor - deleted:address:duplex-list:character<span class="Special"> <- </span>get *deletion, <span class="Constant">deleted-text:offset</span> - old-cursor:address:duplex-list:character<span class="Special"> <- </span>last deleted + deleted:address:shared:duplex-list:character<span class="Special"> <- </span>get *deletion, <span class="Constant">deleted-text:offset</span> + old-cursor:address:shared:duplex-list:character<span class="Special"> <- </span>last deleted insert-range anchor, deleted <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> *before-cursor<span class="Special"> <- </span>copy old-cursor *cursor-row<span class="Special"> <- </span>get *deletion, <span class="Constant">before-row:offset</span> *cursor-column<span class="Special"> <- </span>get *deletion, <span class="Constant">before-column:offset</span> - top:address:address:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + top:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> *top<span class="Special"> <- </span>get *deletion, <span class="Constant">before-top-of-screen:offset</span> <span class="Delimiter">}</span> ] @@ -1685,13 +1685,13 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Delimiter">{</span> deletion:address:delete-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">delete:variant</span> <span class="muControl">break-unless</span> deletion - start:address:duplex-list:character<span class="Special"> <- </span>get *deletion, <span class="Constant">delete-from:offset</span> - end:address:duplex-list:character<span class="Special"> <- </span>get *deletion, <span class="Constant">delete-until:offset</span> + start:address:shared:duplex-list:character<span class="Special"> <- </span>get *deletion, <span class="Constant">delete-from:offset</span> + end:address:shared:duplex-list:character<span class="Special"> <- </span>get *deletion, <span class="Constant">delete-until:offset</span> remove-between start, end <span class="Comment"># assert cursor-row/cursor-column/top-of-screen match after-row/after-column/after-top-of-screen</span> *cursor-row<span class="Special"> <- </span>get *deletion, <span class="Constant">after-row:offset</span> *cursor-column<span class="Special"> <- </span>get *deletion, <span class="Constant">after-column:offset</span> - top:address:address:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> + top:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *editor, <span class="Constant">top-of-screen:offset</span> *top<span class="Special"> <- </span>get *deletion, <span class="Constant">after-top-of-screen:offset</span> <span class="Delimiter">}</span> ] @@ -1701,9 +1701,9 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-and-redo-delete [ <span class="Comment"># create an editor</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># insert some text and hit delete and backspace a few times</span> assume-console [ type <span class="Constant">[abcdef]</span> @@ -1713,15 +1713,15 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press delete press delete ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> .af .</span> <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> <span class="Constant"> . .</span> ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> @@ -1731,10 +1731,10 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> @@ -1750,10 +1750,10 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> @@ -1769,10 +1769,10 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> @@ -1788,11 +1788,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># first line inserted</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> @@ -1808,11 +1808,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># first line inserted</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> @@ -1828,11 +1828,11 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># first line inserted</span> - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> @@ -1846,37 +1846,37 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } ] <span class="muRecipe">after</span> <span class="Constant"><delete-character-begin></span> [ - top-before:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + top-before:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> ] <span class="muRecipe">before</span> <span class="Constant"><delete-character-end></span> [ <span class="Delimiter">{</span> <span class="muControl">break-unless</span> deleted-cell <span class="Comment"># delete failed; don't add an undo operation</span> - top-after:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> - undo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + top-after:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + undo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> <span class="Delimiter">{</span> <span class="Comment"># if previous operation was an insert, coalesce this operation with it</span> <span class="muControl">break-unless</span> *undo - op:address:operation<span class="Special"> <- </span>first *undo + op:address:shared:operation<span class="Special"> <- </span>first *undo deletion:address:delete-operation<span class="Special"> <- </span>maybe-convert *op, <span class="Constant">delete:variant</span> <span class="muControl">break-unless</span> deletion previous-coalesce-tag:number<span class="Special"> <- </span>get *deletion, <span class="Constant">tag:offset</span> coalesce?:boolean<span class="Special"> <- </span>equal previous-coalesce-tag, <span class="Constant">2/coalesce-delete</span> <span class="muControl">break-unless</span> coalesce? - delete-until:address:address:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">delete-until:offset</span> + delete-until:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">delete-until:offset</span> *delete-until<span class="Special"> <- </span>next *before-cursor - deleted-so-far:address:address:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">deleted-text:offset</span> + deleted-so-far:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">deleted-text:offset</span> *deleted-so-far<span class="Special"> <- </span>append *deleted-so-far, deleted-cell after-row:address:number<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-row:offset</span> *after-row<span class="Special"> <- </span>copy *cursor-row after-column:address:number<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-column:offset</span> *after-column<span class="Special"> <- </span>copy *cursor-column - after-top:address:address:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-top-of-screen:offset</span> + after-top:address:address:shared:duplex-list:character<span class="Special"> <- </span>get-address *deletion, <span class="Constant">after-top-of-screen:offset</span> *after-top<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> <span class="muControl">break</span> <span class="Constant">+done-adding-delete-operation:label</span> <span class="Delimiter">}</span> <span class="Comment"># if not, create a new operation</span> - op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> - deleted-until:address:duplex-list:character<span class="Special"> <- </span>next *before-cursor + op:address:shared:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + deleted-until:address:shared:duplex-list:character<span class="Special"> <- </span>next *before-cursor *op<span class="Special"> <- </span>merge <span class="Constant">2/delete-operation</span>, save-row/<span class="muRecipe">before</span>, save-column/<span class="muRecipe">before</span>, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, deleted-cell/deleted, *before-cursor/delete-from, deleted-until, <span class="Constant">2/coalesce-delete</span> editor<span class="Special"> <- </span>add-operation editor, op <span class="Constant"> +done-adding-delete-operation</span> @@ -1888,16 +1888,16 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-and-redo-ctrl-k [ <span class="Comment"># create an editor</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># insert some text and hit delete and backspace a few times</span> assume-console [ left-click <span class="Constant">1</span>, <span class="Constant">1</span> press ctrl-k ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> .a .</span> @@ -1905,8 +1905,8 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> <span class="Constant"> . .</span> ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> @@ -1916,7 +1916,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -1925,8 +1925,8 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> <span class="Constant"> . .</span> ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> @@ -1936,7 +1936,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># first line inserted</span> screen-should-contain [ @@ -1946,8 +1946,8 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> <span class="Constant"> . .</span> ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">1</span> @@ -1957,7 +1957,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -1969,15 +1969,15 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } ] <span class="muRecipe">after</span> <span class="Constant"><delete-to-end-of-line-begin></span> [ - top-before:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + top-before:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> ] <span class="muRecipe">before</span> <span class="Constant"><delete-to-end-of-line-end></span> [ <span class="Delimiter">{</span> <span class="muControl">break-unless</span> deleted-cells <span class="Comment"># delete failed; don't add an undo operation</span> - top-after:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> - undo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> - op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> - deleted-until:address:duplex-list:character<span class="Special"> <- </span>next *before-cursor + top-after:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + undo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + op:address:shared:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + deleted-until:address:shared:duplex-list:character<span class="Special"> <- </span>next *before-cursor *op<span class="Special"> <- </span>merge <span class="Constant">2/delete-operation</span>, save-row/<span class="muRecipe">before</span>, save-column/<span class="muRecipe">before</span>, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, deleted-cells/deleted, *before-cursor/delete-from, deleted-until, <span class="Constant">0/never-coalesce</span> editor<span class="Special"> <- </span>add-operation editor, op <span class="Constant"> +done-adding-delete-operation</span> @@ -1989,16 +1989,16 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-and-redo-ctrl-u [ <span class="Comment"># create an editor</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span> <span class="Constant">def]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># insert some text and hit delete and backspace a few times</span> assume-console [ left-click <span class="Constant">1</span>, <span class="Constant">2</span> press ctrl-u ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> .c .</span> @@ -2006,8 +2006,8 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> <span class="Constant"> . .</span> ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> @@ -2017,7 +2017,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-z ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -2026,8 +2026,8 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> <span class="Constant"> . .</span> ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">2</span> @@ -2037,7 +2037,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } press ctrl-y ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] <span class="Comment"># first line inserted</span> screen-should-contain [ @@ -2047,8 +2047,8 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="Constant"> .┈┈┈┈┈┈┈┈┈┈.</span> <span class="Constant"> . .</span> ] - <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-row:offset</span> - <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:editor-data, <span class="Constant">cursor-column:offset</span> + <span class="Constant">3</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-row:offset</span> + <span class="Constant">4</span>:number<span class="Special"> <- </span>get *<span class="Constant">2</span>:address:shared:editor-data, <span class="Constant">cursor-column:offset</span> memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">1</span> <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">0</span> @@ -2058,7 +2058,7 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } type <span class="Constant">[1]</span> ] run [ - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data ] screen-should-contain [ <span class="Constant"> . .</span> @@ -2070,15 +2070,15 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } ] <span class="muRecipe">after</span> <span class="Constant"><delete-to-start-of-line-begin></span> [ - top-before:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + top-before:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> ] <span class="muRecipe">before</span> <span class="Constant"><delete-to-start-of-line-end></span> [ <span class="Delimiter">{</span> <span class="muControl">break-unless</span> deleted-cells <span class="Comment"># delete failed; don't add an undo operation</span> - top-after:address:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> - undo:address:address:list:address:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> - op:address:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> - deleted-until:address:duplex-list:character<span class="Special"> <- </span>next *before-cursor + top-after:address:shared:duplex-list:character<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span> + undo:address:address:shared:list:address:shared:operation<span class="Special"> <- </span>get-address *editor, <span class="Constant">undo:offset</span> + op:address:shared:operation<span class="Special"> <- </span>new <span class="Constant">operation:type</span> + deleted-until:address:shared:duplex-list:character<span class="Special"> <- </span>next *before-cursor *op<span class="Special"> <- </span>merge <span class="Constant">2/delete-operation</span>, save-row/<span class="muRecipe">before</span>, save-column/<span class="muRecipe">before</span>, top-before, *cursor-row/<span class="muRecipe">after</span>, *cursor-column/<span class="muRecipe">after</span>, top-after, deleted-cells/deleted, *before-cursor/delete-from, deleted-until, <span class="Constant">0/never-coalesce</span> editor<span class="Special"> <- </span>add-operation editor, op <span class="Constant"> +done-adding-delete-operation</span> @@ -2088,16 +2088,16 @@ body { font-family: monospace; color: #eeeeee; background-color: #080808; } <span class="muScenario">scenario</span> editor-can-undo-and-redo-ctrl-u-2 [ <span class="Comment"># create an editor</span> assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span> - <span class="Constant">1</span>:address:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> - <span class="Constant">2</span>:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:array:character, screen:address:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> - editor-render screen, <span class="Constant">2</span>:address:editor-data + <span class="Constant">1</span>:address:shared:array:character<span class="Special"> <- </span>new <span class="Constant">[]</span> + <span class="Constant">2</span>:address:shared:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">1</span>:address:shared:array:character, screen:address:shared:screen, <span class="Constant">0/left</span>, <span class="Constant">10/right</span> + editor-render screen, <span class="Constant">2</span>:address:shared:editor-data <span class="Comment"># insert some text and hit delete and backspace a few times</span> assume-console [ type <span class="Constant">[abc]</span> press ctrl-u press ctrl-z ] - editor-event-loop screen:address:screen, console:address:console, <span class="Constant">2</span>:address:editor-data + editor-event-loop screen:address:shared:screen, console:address:shared:console, <span class="Constant">2</span>:address:shared:editor-data screen-should-contain [ <span class="Constant"> . .</span> <span class="Constant"> .abc .</span> |