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Diffstat (limited to 'html/062rewrite_stash.cc.html')
| -rw-r--r-- | html/062rewrite_stash.cc.html | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/html/062rewrite_stash.cc.html b/html/062rewrite_stash.cc.html new file mode 100644 index 00000000..a5a67068 --- /dev/null +++ b/html/062rewrite_stash.cc.html @@ -0,0 +1,171 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - 062rewrite_stash.cc</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v2"> +<meta name="syntax" content="cpp"> +<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; } +body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 12pt; font-size: 1em; } +.Constant { color: #00a0a0; } +.cSpecial { color: #008000; } +.traceContains { color: #008000; } +.Comment { color: #9090ff; } +.Delimiter { color: #800080; } +.Special { color: #c00000; } +.Identifier { color: #fcb165; } +.Normal { color: #eeeeee; background-color: #080808; padding-bottom: 1px; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="Comment">//: when encountering other types, try to convert them to strings using</span> +<span class="Comment">//: 'to-text'</span> + +<span class="Delimiter">:(scenarios transform)</span> +<span class="Delimiter">:(scenario rewrite_stashes_to_text)</span> +recipe main [ + local-scope + <span class="Normal">n</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span> + stash n +] +<span class="traceContains">+transform: {stash_2_0: ("address" "array" "character")} <- to-text-line {n: "number"}</span> +<span class="traceContains">+transform: stash {stash_2_0: ("address" "array" "character")}</span> + +<span class="Comment">//: special case: rewrite attempts to stash contents of most arrays to avoid</span> +<span class="Comment">//: passing addresses around</span> + +<span class="Delimiter">:(scenario rewrite_stashes_of_arrays)</span> +recipe main [ + local-scope + <span class="Normal">n</span>:address:array:number<span class="Special"> <- </span><span class="Normal">new</span> number:type<span class="Delimiter">,</span> <span class="Constant">3</span> + stash *n +] +<span class="traceContains">+transform: {stash_2_0: ("address" "array" "character")} <- array-to-text-line {n: ("address" "array" "number")}</span> +<span class="traceContains">+transform: stash {stash_2_0: ("address" "array" "character")}</span> + +<span class="Delimiter">:(scenario ignore_stashes_of_static_arrays)</span> +recipe main [ + local-scope + <span class="Normal">n</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array + stash n +] +<span class="traceContains">+transform: stash {n: ("array" "number" "3")}</span> + +<span class="Delimiter">:(before "End Instruction Inserting/Deleting Transforms")</span> +Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>rewrite_stashes_to_text<span class="Delimiter">);</span> + +<span class="Delimiter">:(code)</span> +<span class="Normal">void</span> rewrite_stashes_to_text<span class="Delimiter">(</span>recipe_ordinal r<span class="Delimiter">)</span> <span class="Delimiter">{</span> + recipe& caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span> + trace<span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"--- rewrite 'stash' instructions in recipe "</span> << caller<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span> + <span class="Comment">// in recipes without named locations, 'stash' is still not extensible</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>contains_numeric_locations<span class="Delimiter">(</span>caller<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span> + check_or_set_types_by_name<span class="Delimiter">(</span>r<span class="Delimiter">);</span> <span class="Comment">// prerequisite</span> + rewrite_stashes_to_text<span class="Delimiter">(</span>caller<span class="Delimiter">);</span> +<span class="Delimiter">}</span> + +<span class="Normal">void</span> rewrite_stashes_to_text<span class="Delimiter">(</span>recipe& caller<span class="Delimiter">)</span> <span class="Delimiter">{</span> + vector<instruction> new_instructions<span class="Delimiter">;</span> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> + instruction& inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">"stash"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>type<span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Comment">// error; will be handled elsewhere</span> + <span class="Identifier">continue</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> + <span class="Comment">// don't try to extend static arrays</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>is_static_array<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> + instruction def<span class="Delimiter">;</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>is_lookup_of_address_of_array<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Delimiter">{</span> + def<span class="Delimiter">.</span>name = <span class="Constant">"array-to-text-line"</span><span class="Delimiter">;</span> + reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> tmp = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span> + drop_one_lookup<span class="Delimiter">(</span>tmp<span class="Delimiter">);</span> + def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>tmp<span class="Delimiter">);</span> + <span class="Delimiter">}</span> + <span class="Normal">else</span> <span class="Delimiter">{</span> + def<span class="Delimiter">.</span>name = <span class="Constant">"to-text-line"</span><span class="Delimiter">;</span> + def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">));</span> + <span class="Delimiter">}</span> + ostringstream ingredient_name<span class="Delimiter">;</span> + ingredient_name << <span class="Constant">"stash_"</span> << i << <span class="Constant">'_'</span> << j << <span class="Constant">":address:array:character"</span><span class="Delimiter">;</span> + def<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span>ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">()));</span> + trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << to_string<span class="Delimiter">(</span>def<span class="Delimiter">)</span> << end<span class="Delimiter">();</span> + new_instructions<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>def<span class="Delimiter">);</span> + inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>clear<span class="Delimiter">();</span> <span class="Comment">// reclaim old memory</span> + inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)</span> = reagent<span class="Delimiter">(</span>ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">());</span> + <span class="Delimiter">}</span> + <span class="Delimiter">}</span> + trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << end<span class="Delimiter">();</span> + new_instructions<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">);</span> + <span class="Delimiter">}</span> + caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>swap<span class="Delimiter">(</span>new_instructions<span class="Delimiter">);</span> +<span class="Delimiter">}</span> + +<span class="Normal">bool</span> is_lookup_of_address_of_array<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> x<span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name != <span class="Constant">"address"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>!canonize_type<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> + <span class="Identifier">return</span> x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"array"</span><span class="Delimiter">;</span> +<span class="Delimiter">}</span> + +<span class="Normal">bool</span> is_static_array<span class="Delimiter">(</span><span class="Normal">const</span> reagent& x<span class="Delimiter">)</span> <span class="Delimiter">{</span> + <span class="Comment">// no canonize_type()</span> + <span class="Identifier">return</span> x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"array"</span><span class="Delimiter">;</span> +<span class="Delimiter">}</span> + +<span class="Comment">//: Make sure that the new system is strictly better than just the 'stash'</span> +<span class="Comment">//: primitive by itself.</span> + +<span class="Delimiter">:(scenarios run)</span> +<span class="Delimiter">:(scenario rewrite_stash_continues_to_fall_back_to_default_implementation)</span> +<span class="Comment"># type without a to-text implementation</span> +container foo [ + <span class="Normal">x</span>:number + <span class="Normal">y</span>:number +] +recipe main [ + local-scope + <span class="Normal">x</span>:foo<span class="Special"> <- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span> + stash x +] +<span class="traceContains">+app: 34 35</span> + +<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span> +TO_TEXT<span class="Delimiter">,</span> +<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span> +put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"to-text"</span><span class="Delimiter">,</span> TO_TEXT<span class="Delimiter">);</span> +<span class="Delimiter">:(before "End Primitive Recipe Checks")</span> +<span class="Normal">case</span> TO_TEXT: <span class="Delimiter">{</span> + <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> + raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'to-text' requires a single ingredient, but got '"</span> << to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> + <span class="Identifier">break</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + <span class="Comment">// can handle any type</span> + <span class="Identifier">break</span><span class="Delimiter">;</span> +<span class="Delimiter">}</span> +<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> +<span class="Normal">case</span> TO_TEXT: <span class="Delimiter">{</span> + products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span> + products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>new_mu_string<span class="Delimiter">(</span>print_mu<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">),</span> ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))));</span> + <span class="Identifier">break</span><span class="Delimiter">;</span> +<span class="Delimiter">}</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |