diff options
Diffstat (limited to 'html/076duplex_list.mu.html')
| -rw-r--r-- | html/076duplex_list.mu.html | 498 |
1 files changed, 253 insertions, 245 deletions
diff --git a/html/076duplex_list.mu.html b/html/076duplex_list.mu.html index 5b3e3b78..aebf00dd 100644 --- a/html/076duplex_list.mu.html +++ b/html/076duplex_list.mu.html @@ -36,42 +36,38 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color <span class="muData">container</span> duplex-list:_elem [ value:_elem - next:address:shared:duplex-list:_elem - prev:address:shared:duplex-list:_elem + next:address:duplex-list:_elem + prev:address:duplex-list:_elem ] <span class="Comment"># should I say in/contained-in:result, allow ingredients to refer to products?</span> -<span class="muRecipe">def</span> push x:_elem, in:address:shared:duplex-list:_elem<span class="muRecipe"> -> </span>in:address:shared:duplex-list:_elem [ +<span class="muRecipe">def</span> push x:_elem, in:address:duplex-list:_elem<span class="muRecipe"> -> </span>in:address:duplex-list:_elem [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> - result:address:shared:duplex-list:_elem<span class="Special"> <- </span>new <span class="Delimiter">{</span>(duplex-list _elem): type<span class="Delimiter">}</span> - val:address:_elem<span class="Special"> <- </span>get-address *result, <span class="Constant">value:offset</span> - *val<span class="Special"> <- </span>copy x - next:address:address:shared:duplex-list:_elem<span class="Special"> <- </span>get-address *result, <span class="Constant">next:offset</span> - *next<span class="Special"> <- </span>copy in + result:address:duplex-list:_elem<span class="Special"> <- </span>new <span class="Delimiter">{</span>(duplex-list _elem): type<span class="Delimiter">}</span> + *result<span class="Special"> <- </span>merge x, in, <span class="Constant">0</span> <span class="Delimiter">{</span> <span class="muControl">break-unless</span> in - prev:address:address:shared:duplex-list:_elem<span class="Special"> <- </span>get-address *in, <span class="Constant">prev:offset</span> - *prev<span class="Special"> <- </span>copy result + *in<span class="Special"> <- </span>put *in, <span class="Constant">prev:offset</span>, result <span class="Delimiter">}</span> <span class="muControl">return</span> result <span class="Comment"># needed explicitly because we need to replace 'in' with 'result'</span> ] -<span class="muRecipe">def</span> first in:address:shared:duplex-list:_elem<span class="muRecipe"> -> </span>result:_elem [ +<span class="muRecipe">def</span> first in:address:duplex-list:_elem<span class="muRecipe"> -> </span>result:_elem [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> <span class="muControl">return-unless</span> in, <span class="Constant">0</span> result<span class="Special"> <- </span>get *in, <span class="Constant">value:offset</span> ] -<span class="muRecipe">def</span> next in:address:shared:duplex-list:_elem<span class="muRecipe"> -> </span>result:address:shared:duplex-list:_elem/contained-in:in [ +<span class="muRecipe">def</span> next in:address:duplex-list:_elem<span class="muRecipe"> -> </span>result:address:duplex-list:_elem/contained-in:in [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> <span class="muControl">return-unless</span> in, <span class="Constant">0</span> result<span class="Special"> <- </span>get *in, <span class="Constant">next:offset</span> ] -<span class="muRecipe">def</span> prev in:address:shared:duplex-list:_elem<span class="muRecipe"> -> </span>result:address:shared:duplex-list:_elem/contained-in:in [ +<span class="muRecipe">def</span> prev in:address:duplex-list:_elem<span class="muRecipe"> -> </span>result:address:duplex-list:_elem/contained-in:in [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> <span class="muControl">return-unless</span> in, <span class="Constant">0</span> @@ -84,24 +80,24 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color <span class="Comment"># reserve locations 0, 1 and 2 to check for missing null check</span> <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span> <span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span> - <span class="Constant">3</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> - <span class="Constant">3</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">3</span>:address:shared:duplex-list:character - <span class="Constant">3</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">3</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:address:shared:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">3</span>:address:shared:duplex-list:character - <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">4</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">4</span>:address:shared:duplex-list:character - <span class="Constant">6</span>:character<span class="Special"> <- </span>first <span class="Constant">4</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">4</span>:address:shared:duplex-list:character - <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">4</span>:address:shared:duplex-list:character - <span class="Constant">8</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">4</span>:address:shared:duplex-list:character - <span class="Constant">9</span>:character<span class="Special"> <- </span>first <span class="Constant">8</span>:address:shared:duplex-list:character - <span class="Constant">10</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">8</span>:address:shared:duplex-list:character - <span class="Constant">11</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">8</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">4</span>:address:shared:duplex-list:character - <span class="Constant">12</span>:character<span class="Special"> <- </span>first <span class="Constant">4</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">4</span>:address:shared:duplex-list:character - <span class="Constant">13</span>:character<span class="Special"> <- </span>first <span class="Constant">4</span>:address:shared:duplex-list:character - <span class="Constant">14</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">3</span>:address:shared:duplex-list:character, <span class="Constant">4</span>:address:shared:duplex-list:character + <span class="Constant">3</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> + <span class="Constant">3</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">3</span>:address:duplex-list:character + <span class="Constant">3</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">3</span>:address:duplex-list:character + <span class="Constant">4</span>:address:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">3</span>:address:duplex-list:character + <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">4</span>:address:duplex-list:character + <span class="Constant">4</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">4</span>:address:duplex-list:character + <span class="Constant">6</span>:character<span class="Special"> <- </span>first <span class="Constant">4</span>:address:duplex-list:character + <span class="Constant">4</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">4</span>:address:duplex-list:character + <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">4</span>:address:duplex-list:character + <span class="Constant">8</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">4</span>:address:duplex-list:character + <span class="Constant">9</span>:character<span class="Special"> <- </span>first <span class="Constant">8</span>:address:duplex-list:character + <span class="Constant">10</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">8</span>:address:duplex-list:character + <span class="Constant">11</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">8</span>:address:duplex-list:character + <span class="Constant">4</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">4</span>:address:duplex-list:character + <span class="Constant">12</span>:character<span class="Special"> <- </span>first <span class="Constant">4</span>:address:duplex-list:character + <span class="Constant">4</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">4</span>:address:duplex-list:character + <span class="Constant">13</span>:character<span class="Special"> <- </span>first <span class="Constant">4</span>:address:duplex-list:character + <span class="Constant">14</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">3</span>:address:duplex-list:character, <span class="Constant">4</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">0</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># no modifications to null pointers</span> @@ -121,52 +117,43 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color ] <span class="Comment"># insert 'x' after 'in'</span> -<span class="muRecipe">def</span> insert x:_elem, in:address:shared:duplex-list:_elem<span class="muRecipe"> -> </span>in:address:shared:duplex-list:_elem [ +<span class="muRecipe">def</span> insert x:_elem, in:address:duplex-list:_elem<span class="muRecipe"> -> </span>in:address:duplex-list:_elem [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> - new-node:address:shared:duplex-list:_elem<span class="Special"> <- </span>new <span class="Delimiter">{</span>(duplex-list _elem): type<span class="Delimiter">}</span> - val:address:_elem<span class="Special"> <- </span>get-address *new-node, <span class="Constant">value:offset</span> - *val<span class="Special"> <- </span>copy x - next-node:address:shared:duplex-list:_elem<span class="Special"> <- </span>get *in, <span class="Constant">next:offset</span> - <span class="Comment"># in.next = new-node</span> - y:address:address:shared:duplex-list:_elem<span class="Special"> <- </span>get-address *in, <span class="Constant">next:offset</span> - *y<span class="Special"> <- </span>copy new-node - <span class="Comment"># new-node.prev = in</span> - y<span class="Special"> <- </span>get-address *new-node, <span class="Constant">prev:offset</span> - *y<span class="Special"> <- </span>copy in - <span class="Comment"># new-node.next = next-node</span> - y<span class="Special"> <- </span>get-address *new-node, <span class="Constant">next:offset</span> - *y<span class="Special"> <- </span>copy next-node - <span class="Comment"># if next-node is not null</span> + new-node:address:duplex-list:_elem<span class="Special"> <- </span>new <span class="Delimiter">{</span>(duplex-list _elem): type<span class="Delimiter">}</span> + *new-node<span class="Special"> <- </span>put *new-node, <span class="Constant">value:offset</span>, x + <span class="Comment"># save old next before changing it</span> + next-node:address:duplex-list:_elem<span class="Special"> <- </span>get *in, <span class="Constant">next:offset</span> + *in<span class="Special"> <- </span>put *in, <span class="Constant">next:offset</span>, new-node + *new-node<span class="Special"> <- </span>put *new-node, <span class="Constant">prev:offset</span>, in + *new-node<span class="Special"> <- </span>put *new-node, <span class="Constant">next:offset</span>, next-node <span class="muControl">return-unless</span> next-node - <span class="Comment"># next-node.prev = new-node</span> - y<span class="Special"> <- </span>get-address *next-node, <span class="Constant">prev:offset</span> - *y<span class="Special"> <- </span>copy new-node + *next-node<span class="Special"> <- </span>put *next-node, <span class="Constant">prev:offset</span>, new-node ] <span class="muScenario">scenario</span> inserting-into-duplex-list [ run [ - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:shared:duplex-list:character <span class="Comment"># 2 points inside list</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>insert <span class="Constant">6</span>, <span class="Constant">2</span>:address:shared:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character <span class="Comment"># 2 points inside list</span> + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>insert <span class="Constant">6</span>, <span class="Constant">2</span>:address:duplex-list:character <span class="Comment"># check structure like before</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">3</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">6</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">8</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">9</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">10</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">2</span>:address:shared:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">3</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">6</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">8</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">9</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">10</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">2</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">5</span> <span class="Comment"># scanning next</span> @@ -182,28 +169,28 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color <span class="muScenario">scenario</span> inserting-at-end-of-duplex-list [ run [ - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:shared:duplex-list:character <span class="Comment"># 2 points inside list</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character <span class="Comment"># now at end of list</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>insert <span class="Constant">6</span>, <span class="Constant">2</span>:address:shared:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character <span class="Comment"># 2 points inside list</span> + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character <span class="Comment"># now at end of list</span> + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>insert <span class="Constant">6</span>, <span class="Constant">2</span>:address:duplex-list:character <span class="Comment"># check structure like before</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">3</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">6</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">8</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">9</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">10</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">2</span>:address:shared:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">3</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">6</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">8</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">9</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">10</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">2</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">5</span> <span class="Comment"># scanning next</span> @@ -219,26 +206,26 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color <span class="muScenario">scenario</span> inserting-after-start-of-duplex-list [ run [ - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>insert <span class="Constant">6</span>, <span class="Constant">1</span>:address:shared:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>insert <span class="Constant">6</span>, <span class="Constant">1</span>:address:duplex-list:character <span class="Comment"># check structure like before</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">3</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">6</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">8</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">9</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">10</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">2</span>:address:shared:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">3</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">6</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">8</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">9</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">10</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">2</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">5</span> <span class="Comment"># scanning next</span> @@ -256,53 +243,49 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color <span class="Comment">#</span> <span class="Comment"># Returns null if and only if list is empty. Beware: in that case any other</span> <span class="Comment"># pointers to the head are now invalid.</span> -<span class="muRecipe">def</span> remove x:address:shared:duplex-list:_elem/contained-in:in, in:address:shared:duplex-list:_elem<span class="muRecipe"> -> </span>in:address:shared:duplex-list:_elem [ +<span class="muRecipe">def</span> remove x:address:duplex-list:_elem/contained-in:in, in:address:duplex-list:_elem<span class="muRecipe"> -> </span>in:address:duplex-list:_elem [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> <span class="Comment"># if 'x' is null, return</span> <span class="muControl">return-unless</span> x - next-node:address:shared:duplex-list:_elem<span class="Special"> <- </span>get *x, <span class="Constant">next:offset</span> - prev-node:address:shared:duplex-list:_elem<span class="Special"> <- </span>get *x, <span class="Constant">prev:offset</span> + next-node:address:duplex-list:_elem<span class="Special"> <- </span>get *x, <span class="Constant">next:offset</span> + prev-node:address:duplex-list:_elem<span class="Special"> <- </span>get *x, <span class="Constant">prev:offset</span> <span class="Comment"># null x's pointers</span> - tmp:address:address:shared:duplex-list:_elem<span class="Special"> <- </span>get-address *x, <span class="Constant">next:offset</span> - *tmp<span class="Special"> <- </span>copy <span class="Constant">0</span> - tmp<span class="Special"> <- </span>get-address *x, <span class="Constant">prev:offset</span> - *tmp<span class="Special"> <- </span>copy <span class="Constant">0</span> + *x<span class="Special"> <- </span>put *x, <span class="Constant">next:offset</span>, <span class="Constant">0</span> + *x<span class="Special"> <- </span>put *x, <span class="Constant">prev:offset</span>, <span class="Constant">0</span> <span class="Comment"># if next-node is not null, set its prev pointer</span> <span class="Delimiter">{</span> <span class="muControl">break-unless</span> next-node - tmp<span class="Special"> <- </span>get-address *next-node, <span class="Constant">prev:offset</span> - *tmp<span class="Special"> <- </span>copy prev-node + *next-node<span class="Special"> <- </span>put *next-node, <span class="Constant">prev:offset</span>, prev-node <span class="Delimiter">}</span> <span class="Comment"># if prev-node is not null, set its next pointer and return</span> <span class="Delimiter">{</span> <span class="muControl">break-unless</span> prev-node - tmp<span class="Special"> <- </span>get-address *prev-node, <span class="Constant">next:offset</span> - *tmp<span class="Special"> <- </span>copy next-node + *prev-node<span class="Special"> <- </span>put *prev-node, <span class="Constant">next:offset</span>, next-node <span class="muControl">return</span> <span class="Delimiter">}</span> - <span class="Comment"># if prev-node is null, then we removed the node at 'in'</span> + <span class="Comment"># if prev-node is null, then we removed the head node at 'in'</span> <span class="Comment"># return the new head rather than the old 'in'</span> <span class="muControl">return</span> next-node ] <span class="muScenario">scenario</span> removing-from-duplex-list [ run [ - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:shared:duplex-list:character <span class="Comment"># 2 points at second element</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>remove <span class="Constant">2</span>:address:shared:duplex-list:character, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">2</span>:address:shared:duplex-list:character, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character <span class="Comment"># 2 points at second element</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>remove <span class="Constant">2</span>:address:duplex-list:character, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">3</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">2</span>:address:duplex-list:character, <span class="Constant">0</span> <span class="Comment"># check structure like before</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">6</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">8</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">2</span>:address:shared:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">6</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">8</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">2</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># remove returned non-null</span> @@ -316,19 +299,19 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color <span class="muScenario">scenario</span> removing-from-start-of-duplex-list [ run [ - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>remove <span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">1</span>:address:shared:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>remove <span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">1</span>:address:duplex-list:character <span class="Comment"># check structure like before</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">3</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">5</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">6</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">7</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">2</span>:address:shared:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">3</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">5</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">6</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">7</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">2</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">4</span> <span class="Comment"># scanning next, skipping deleted element</span> @@ -341,23 +324,23 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color <span class="muScenario">scenario</span> removing-from-end-of-duplex-list [ run [ - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:shared:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">4</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">5</span>, <span class="Constant">1</span>:address:duplex-list:character <span class="Comment"># delete last element</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>remove <span class="Constant">2</span>:address:shared:duplex-list:character, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">3</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">2</span>:address:shared:duplex-list:character, <span class="Constant">0</span> + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>remove <span class="Constant">2</span>:address:duplex-list:character, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">3</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">2</span>:address:duplex-list:character, <span class="Constant">0</span> <span class="Comment"># check structure like before</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">6</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">8</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">2</span>:address:shared:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>copy <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">4</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">5</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">6</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>prev <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">7</span>:character<span class="Special"> <- </span>first <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">8</span>:boolean<span class="Special"> <- </span>equal <span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">2</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">3</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># remove returned non-null</span> @@ -371,58 +354,60 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color <span class="muScenario">scenario</span> removing-from-singleton-list [ run [ - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>remove <span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">1</span>:address:shared:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">3</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>remove <span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">1</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">1</span><span class="Special"> <- </span><span class="Constant">0</span> <span class="Comment"># back to an empty list</span> ] ] -<span class="Comment"># remove values between 'start' and 'end' (both exclusive)</span> -<span class="Comment"># also clear pointers back out from start/end for hygiene</span> -<span class="muRecipe">def</span> remove-between start:address:shared:duplex-list:_elem, end:address:shared:duplex-list:_elem/contained-in:start<span class="muRecipe"> -> </span>start:address:shared:duplex-list:_elem [ +<span class="Comment"># remove values between 'start' and 'end' (both exclusive).</span> +<span class="Comment"># also clear pointers back out from start/end for hygiene.</span> +<span class="Comment"># set end to 0 to delete everything past start.</span> +<span class="Comment"># can't set start to 0 to delete everything before end, because there's no</span> +<span class="Comment"># clean way to return the new head pointer.</span> +<span class="muRecipe">def</span> remove-between start:address:duplex-list:_elem, end:address:duplex-list:_elem/contained-in:start<span class="muRecipe"> -> </span>start:address:duplex-list:_elem [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> - <span class="muControl">return-unless</span> start + next:address:duplex-list:_elem<span class="Special"> <- </span>get *start, <span class="Constant">next:offset</span> + nothing-to-delete?:boolean<span class="Special"> <- </span>equal next, end + <span class="muControl">return-if</span> nothing-to-delete? + assert next, <span class="Constant">[malformed duplex list]</span> <span class="Comment"># start->next->prev = 0</span> <span class="Comment"># start->next = end</span> - next:address:address:shared:duplex-list:_elem<span class="Special"> <- </span>get-address *start, <span class="Constant">next:offset</span> - nothing-to-delete?:boolean<span class="Special"> <- </span>equal *next, end - <span class="muControl">return-if</span> nothing-to-delete? - prev:address:address:shared:duplex-list:_elem<span class="Special"> <- </span>get-address **next, <span class="Constant">prev:offset</span> - *prev<span class="Special"> <- </span>copy <span class="Constant">0</span> - *next<span class="Special"> <- </span>copy end + *next<span class="Special"> <- </span>put *next, <span class="Constant">prev:offset</span>, <span class="Constant">0</span> + *start<span class="Special"> <- </span>put *start, <span class="Constant">next:offset</span>, end <span class="muControl">return-unless</span> end <span class="Comment"># end->prev->next = 0</span> <span class="Comment"># end->prev = start</span> - prev<span class="Special"> <- </span>get-address *end, <span class="Constant">prev:offset</span> - next<span class="Special"> <- </span>get-address **prev, <span class="Constant">next:offset</span> - *next<span class="Special"> <- </span>copy <span class="Constant">0</span> - *prev<span class="Special"> <- </span>copy start + prev:address:duplex-list:_elem<span class="Special"> <- </span>get *end, <span class="Constant">prev:offset</span> + assert prev, <span class="Constant">[malformed duplex list - 2]</span> + *prev<span class="Special"> <- </span>put *prev, <span class="Constant">next:offset</span>, <span class="Constant">0</span> + *end<span class="Special"> <- </span>put *end, <span class="Constant">prev:offset</span>, start ] <span class="muScenario">scenario</span> remove-range [ <span class="Comment"># construct a duplex list with six elements [13, 14, 15, 16, 17, 18]</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">18</span>, <span class="Constant">0</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">17</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">16</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">15</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">14</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">13</span>, <span class="Constant">1</span>:address:shared:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">18</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">17</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">16</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">15</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">14</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">13</span>, <span class="Constant">1</span>:address:duplex-list:character run [ <span class="Comment"># delete 16 onwards</span> <span class="Comment"># first pointer: to the third element</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>remove-between <span class="Constant">2</span>:address:shared:duplex-list:character, <span class="Constant">0</span> + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>remove-between <span class="Constant">2</span>:address:duplex-list:character, <span class="Constant">0</span> <span class="Comment"># now check the list</span> - <span class="Constant">4</span>:character<span class="Special"> <- </span>get *<span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">value:offset</span> - <span class="Constant">5</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">6</span>:character<span class="Special"> <- </span>get *<span class="Constant">5</span>:address:shared:duplex-list:character, <span class="Constant">value:offset</span> - <span class="Constant">7</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">5</span>:address:shared:duplex-list:character - <span class="Constant">8</span>:character<span class="Special"> <- </span>get *<span class="Constant">7</span>:address:shared:duplex-list:character, <span class="Constant">value:offset</span> - <span class="Constant">9</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">7</span>:address:shared:duplex-list:character + <span class="Constant">4</span>:character<span class="Special"> <- </span>get *<span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">5</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">6</span>:character<span class="Special"> <- </span>get *<span class="Constant">5</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">7</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">5</span>:address:duplex-list:character + <span class="Constant">8</span>:character<span class="Special"> <- </span>get *<span class="Constant">7</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">9</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">7</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">13</span> @@ -432,31 +417,31 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color ] ] -<span class="muScenario">scenario</span> remove-range-to-end [ +<span class="muScenario">scenario</span> remove-range-to-final [ <span class="Comment"># construct a duplex list with six elements [13, 14, 15, 16, 17, 18]</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">18</span>, <span class="Constant">0</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">17</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">16</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">15</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">14</span>, <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">13</span>, <span class="Constant">1</span>:address:shared:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">18</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">17</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">16</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">15</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">14</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">13</span>, <span class="Constant">1</span>:address:duplex-list:character run [ <span class="Comment"># delete 15, 16 and 17</span> - <span class="Comment"># first pointer: to the third element</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Comment"># second pointer: to the fifth element</span> - <span class="Constant">3</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:shared:duplex-list:character - <span class="Constant">3</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">3</span>:address:shared:duplex-list:character - <span class="Constant">3</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">3</span>:address:shared:duplex-list:character - <span class="Constant">3</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">3</span>:address:shared:duplex-list:character - remove-between <span class="Constant">2</span>:address:shared:duplex-list:character, <span class="Constant">3</span>:address:shared:duplex-list:character + <span class="Comment"># start pointer: to the second element</span> + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character + <span class="Comment"># end pointer: to the last (sixth) element</span> + <span class="Constant">3</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">2</span>:address:duplex-list:character + <span class="Constant">3</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">3</span>:address:duplex-list:character + <span class="Constant">3</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">3</span>:address:duplex-list:character + <span class="Constant">3</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">3</span>:address:duplex-list:character + remove-between <span class="Constant">2</span>:address:duplex-list:character, <span class="Constant">3</span>:address:duplex-list:character <span class="Comment"># now check the list</span> - <span class="Constant">4</span>:character<span class="Special"> <- </span>get *<span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">value:offset</span> - <span class="Constant">5</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">6</span>:character<span class="Special"> <- </span>get *<span class="Constant">5</span>:address:shared:duplex-list:character, <span class="Constant">value:offset</span> - <span class="Constant">7</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">5</span>:address:shared:duplex-list:character - <span class="Constant">8</span>:character<span class="Special"> <- </span>get *<span class="Constant">7</span>:address:shared:duplex-list:character, <span class="Constant">value:offset</span> - <span class="Constant">9</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">7</span>:address:shared:duplex-list:character + <span class="Constant">4</span>:character<span class="Special"> <- </span>get *<span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">5</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">6</span>:character<span class="Special"> <- </span>get *<span class="Constant">5</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">7</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">5</span>:address:duplex-list:character + <span class="Constant">8</span>:character<span class="Special"> <- </span>get *<span class="Constant">7</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">9</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">7</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">13</span> @@ -467,19 +452,48 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color ] <span class="muScenario">scenario</span> remove-range-empty [ + <span class="Comment"># construct a duplex list with three elements [13, 14, 15]</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">15</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">14</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">13</span>, <span class="Constant">1</span>:address:duplex-list:character + run [ + <span class="Comment"># delete between first and second element (i.e. nothing)</span> + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character + remove-between <span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">2</span>:address:duplex-list:character + <span class="Comment"># now check the list</span> + <span class="Constant">4</span>:character<span class="Special"> <- </span>get *<span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">5</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">6</span>:character<span class="Special"> <- </span>get *<span class="Constant">5</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">7</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">5</span>:address:duplex-list:character + <span class="Constant">8</span>:character<span class="Special"> <- </span>get *<span class="Constant">7</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">9</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">7</span>:address:duplex-list:character + ] + <span class="Comment"># no change</span> + memory-should-contain [ + <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">13</span> + <span class="Constant">6</span><span class="Special"> <- </span><span class="Constant">14</span> + <span class="Constant">8</span><span class="Special"> <- </span><span class="Constant">15</span> + <span class="Constant">9</span><span class="Special"> <- </span><span class="Constant">0</span> + ] +] + +<span class="muScenario">scenario</span> remove-range-to-end [ <span class="Comment"># construct a duplex list with six elements [13, 14, 15, 16, 17, 18]</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">14</span>, <span class="Constant">0</span> - <span class="Constant">1</span>:address:shared:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">13</span>, <span class="Constant">1</span>:address:shared:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">18</span>, <span class="Constant">0</span> + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">17</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">16</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">15</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">14</span>, <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">1</span>:address:duplex-list:character<span class="Special"> <- </span>push <span class="Constant">13</span>, <span class="Constant">1</span>:address:duplex-list:character run [ - <span class="Comment"># delete 16 onwards</span> - <span class="Comment"># first pointer: to the third element</span> - <span class="Constant">2</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:shared:duplex-list:character - remove-between <span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">2</span>:address:shared:duplex-list:character + <span class="Comment"># remove the third element and beyond</span> + <span class="Constant">2</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character + remove-between <span class="Constant">2</span>:address:duplex-list:character, <span class="Constant">0</span> <span class="Comment"># now check the list</span> - <span class="Constant">4</span>:character<span class="Special"> <- </span>get *<span class="Constant">1</span>:address:shared:duplex-list:character, <span class="Constant">value:offset</span> - <span class="Constant">5</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:shared:duplex-list:character - <span class="Constant">6</span>:character<span class="Special"> <- </span>get *<span class="Constant">5</span>:address:shared:duplex-list:character, <span class="Constant">value:offset</span> - <span class="Constant">7</span>:address:shared:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">5</span>:address:shared:duplex-list:character + <span class="Constant">4</span>:character<span class="Special"> <- </span>get *<span class="Constant">1</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">5</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">1</span>:address:duplex-list:character + <span class="Constant">6</span>:character<span class="Special"> <- </span>get *<span class="Constant">5</span>:address:duplex-list:character, <span class="Constant">value:offset</span> + <span class="Constant">7</span>:address:duplex-list:character<span class="Special"> <- </span>next <span class="Constant">5</span>:address:duplex-list:character ] memory-should-contain [ <span class="Constant">4</span><span class="Special"> <- </span><span class="Constant">13</span> @@ -489,49 +503,43 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color ] <span class="Comment"># insert list beginning at 'new' after 'in'</span> -<span class="muRecipe">def</span> insert-range in:address:shared:duplex-list:_elem, start:address:shared:duplex-list:_elem/contained-in:in<span class="muRecipe"> -> </span>in:address:shared:duplex-list:_elem [ +<span class="muRecipe">def</span> insert-range in:address:duplex-list:_elem, start:address:duplex-list:_elem/contained-in:in<span class="muRecipe"> -> </span>in:address:duplex-list:_elem [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> <span class="muControl">return-unless</span> in <span class="muControl">return-unless</span> start - end:address:shared:duplex-list:_elem<span class="Special"> <- </span>copy start + end:address:duplex-list:_elem<span class="Special"> <- </span>copy start <span class="Delimiter">{</span> - next:address:shared:duplex-list:_elem<span class="Special"> <- </span>next end/insert-range + next:address:duplex-list:_elem<span class="Special"> <- </span>next end/insert-range <span class="muControl">break-unless</span> next end<span class="Special"> <- </span>copy next <span class="muControl">loop</span> <span class="Delimiter">}</span> - next:address:shared:duplex-list:_elem<span class="Special"> <- </span>next in - dest:address:address:shared:duplex-list:_elem<span class="Special"> <- </span>get-address *end, <span class="Constant">next:offset</span> - *dest<span class="Special"> <- </span>copy next + next:address:duplex-list:_elem<span class="Special"> <- </span>next in + *end<span class="Special"> <- </span>put *end, <span class="Constant">next:offset</span>, next <span class="Delimiter">{</span> <span class="muControl">break-unless</span> next - dest<span class="Special"> <- </span>get-address *next, <span class="Constant">prev:offset</span> - *dest<span class="Special"> <- </span>copy end + *next<span class="Special"> <- </span>put *next, <span class="Constant">prev:offset</span>, end <span class="Delimiter">}</span> - dest<span class="Special"> <- </span>get-address *in, <span class="Constant">next:offset</span> - *dest<span class="Special"> <- </span>copy start - dest<span class="Special"> <- </span>get-address *start, <span class="Constant">prev:offset</span> - *dest<span class="Special"> <- </span>copy in + *in<span class="Special"> <- </span>put *in, <span class="Constant">next:offset</span>, start + *start<span class="Special"> <- </span>put *start, <span class="Constant">prev:offset</span>, in ] -<span class="muRecipe">def</span> append in:address:shared:duplex-list:_elem, new:address:shared:duplex-list:_elem/contained-in:in<span class="muRecipe"> -> </span>in:address:shared:duplex-list:_elem [ +<span class="muRecipe">def</span> append in:address:duplex-list:_elem, new:address:duplex-list:_elem/contained-in:in<span class="muRecipe"> -> </span>in:address:duplex-list:_elem [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> - last:address:shared:duplex-list:_elem<span class="Special"> <- </span>last in - dest:address:address:shared:duplex-list:_elem<span class="Special"> <- </span>get-address *last, <span class="Constant">next:offset</span> - *dest<span class="Special"> <- </span>copy new + last:address:duplex-list:_elem<span class="Special"> <- </span>last in + *last<span class="Special"> <- </span>put *last, <span class="Constant">next:offset</span>, new <span class="muControl">return-unless</span> new - dest<span class="Special"> <- </span>get-address *new, <span class="Constant">prev:offset</span> - *dest<span class="Special"> <- </span>copy last + *new<span class="Special"> <- </span>put *new, <span class="Constant">prev:offset</span>, last ] -<span class="muRecipe">def</span> last in:address:shared:duplex-list:_elem<span class="muRecipe"> -> </span>result:address:shared:duplex-list:_elem [ +<span class="muRecipe">def</span> last in:address:duplex-list:_elem<span class="muRecipe"> -> </span>result:address:duplex-list:_elem [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> result<span class="Special"> <- </span>copy in <span class="Delimiter">{</span> - next:address:shared:duplex-list:_elem<span class="Special"> <- </span>next result + next:address:duplex-list:_elem<span class="Special"> <- </span>next result <span class="muControl">break-unless</span> next result<span class="Special"> <- </span>copy next <span class="muControl">loop</span> @@ -539,7 +547,7 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color ] <span class="Comment"># helper for debugging</span> -<span class="muRecipe">def</span> dump-from x:address:shared:duplex-list:_elem [ +<span class="muRecipe">def</span> dump-from x:address:duplex-list:_elem [ <span class="Constant">local-scope</span> <span class="Constant">load-ingredients</span> $print x, <span class="Constant">[: ]</span> |