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| author | Kartik K. Agaram <vc@akkartik.com> | 2016-01-26 23:47:23 -0800 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2016-01-26 23:47:23 -0800 |
| commit | d009e158803956c76adbf8f58a62884c3e7affb3 (patch) | |
| tree | b88198e28d15cd1fc064f5300365a190decc4c50 /html/045closure_name.cc.html | |
| parent | 2da43c9462c7b7c1bb78d2f2826b3b97b4874973 (diff) | |
| download | mu-d009e158803956c76adbf8f58a62884c3e7affb3.tar.gz | |
2605
Diffstat (limited to 'html/045closure_name.cc.html')
| -rw-r--r-- | html/045closure_name.cc.html | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/html/045closure_name.cc.html b/html/045closure_name.cc.html new file mode 100644 index 00000000..ae93ad02 --- /dev/null +++ b/html/045closure_name.cc.html @@ -0,0 +1,185 @@ +<!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 - 045closure_name.cc</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v1"> +<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-family: monospace; color: #eeeeee; background-color: #080808; } +* { font-size: 1.05em; } +.traceContains { color: #008000; } +.Identifier { color: #804000; } +.cSpecial { color: #008000; } +.Constant { color: #00a0a0; } +.Comment { color: #9090ff; } +.Delimiter { color: #a04060; } +.Special { color: #ff6060; } +.CommentedCode { color: #6c6c6c; } +--> +</style> + +<script type='text/javascript'> +<!-- + +--> +</script> +</head> +<body> +<pre id='vimCodeElement'> +<span class="Comment">//: Writing to a literal (not computed) address of 0 in a recipe chains two</span> +<span class="Comment">//: spaces together. When a variable has a property of /space:1, it looks up</span> +<span class="Comment">//: the variable in the chained/surrounding space. /space:2 looks up the</span> +<span class="Comment">//: surrounding space of the surrounding space, etc.</span> + +<span class="Delimiter">:(scenario closure)</span> +recipe main [ + default-space:address:shared:array:location<span class="Special"> <- </span>new location:type<span class="Delimiter">,</span> <span class="Constant">30</span> + <span class="Constant">1</span>:address:shared:array:location/names:new-counter<span class="Special"> <- </span>new-counter + <span class="Constant">2</span>:number/<span class="Special">raw <- </span>increment-counter <span class="Constant">1</span>:address:shared:array:location/names:new-counter + <span class="Constant">3</span>:number/<span class="Special">raw <- </span>increment-counter <span class="Constant">1</span>:address:shared:array:location/names:new-counter +] + +recipe new-counter [ + default-space:address:shared:array:location<span class="Special"> <- </span>new location:type<span class="Delimiter">,</span> <span class="Constant">30</span> + x:number<span class="Special"> <- </span>copy <span class="Constant">23</span> + y:number<span class="Special"> <- </span>copy <span class="Constant">3</span> <span class="Comment"># variable that will be incremented</span> + reply default-space:address:shared:array:location +] + +recipe increment-counter [ + default-space:address:shared:array:location<span class="Special"> <- </span>new location:type<span class="Delimiter">,</span> <span class="Constant">30</span> + <span class="Constant">0</span>:address:shared:array:location/names:new-counter<span class="Special"> <- </span>next-ingredient <span class="Comment"># outer space must be created by 'new-counter' above</span> + y:number/space:<span class="Constant">1</span><span class="Special"> <- </span>add y:number/space:<span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">1</span> <span class="Comment"># increment</span> + y:number<span class="Special"> <- </span>copy <span class="Constant">234</span> <span class="Comment"># dummy</span> + reply y:number/space:<span class="Constant">1</span> +] + +<span class="traceContains">+name: lexically surrounding space for recipe increment-counter comes from new-counter</span> +<span class="traceContains">+mem: storing 5 in location 3</span> + +<span class="Comment">//: To make this work, compute the recipe that provides names for the</span> +<span class="Comment">//: surrounding space of each recipe.</span> + +<span class="Delimiter">:(before "End Globals")</span> +map<recipe_ordinal<span class="Delimiter">,</span> recipe_ordinal> Surrounding_space<span class="Delimiter">;</span> + +<span class="Delimiter">:(before "Transform.push_back(transform_names)")</span> +Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>collect_surrounding_spaces<span class="Delimiter">);</span> <span class="Comment">// idempotent</span> + +<span class="Delimiter">:(code)</span> +void collect_surrounding_spaces<span class="Delimiter">(</span>const recipe_ordinal r<span class="Delimiter">)</span> <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">"--- collect surrounding spaces for recipe "</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name << end<span class="Delimiter">();</span> +<span class="CommentedCode">//? cerr << "--- collect surrounding spaces for recipe " << get(Recipe, r).name << '\n';</span> + for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> + const instruction& inst = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> + if <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>is_label<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> + for <span class="Delimiter">(</span>long long int j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span> + if <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> + if <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>name != <span class="Constant">"0"</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> + type_tree* type = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>type<span class="Delimiter">;</span> + if <span class="Delimiter">(</span>!type + || type<span class="Delimiter">-></span>value != get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"address"</span><span class="Delimiter">)</span> + || !type<span class="Delimiter">-></span>right + || type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>value != get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"shared"</span><span class="Delimiter">)</span> + || !type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right + || type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>value != get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"array"</span><span class="Delimiter">)</span> + || !type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right + || type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>value != get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"location"</span><span class="Delimiter">)</span> + || type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span> + raise_error << <span class="Constant">"slot 0 should always have type address:shared:array:location, but is "</span> << inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> + <span class="Identifier">continue</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + string_tree* s = property<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> <span class="Constant">"names"</span><span class="Delimiter">);</span> + if <span class="Delimiter">(</span>!s<span class="Delimiter">)</span> <span class="Delimiter">{</span> + raise_error << <span class="Constant">"slot 0 requires a /names property in recipe "</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name << end<span class="Delimiter">();</span> + <span class="Identifier">continue</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + if <span class="Delimiter">(</span>s<span class="Delimiter">-></span>right<span class="Delimiter">)</span> raise_error << <span class="Constant">"slot 0 should have a single value in /names, but got "</span> << inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> + const string& surrounding_recipe_name = s<span class="Delimiter">-></span>value<span class="Delimiter">;</span> + if <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Surrounding_space<span class="Delimiter">,</span> r<span class="Delimiter">)</span> + && Surrounding_space[r] != get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> surrounding_recipe_name<span class="Delimiter">))</span> <span class="Delimiter">{</span> + raise_error << <span class="Constant">"recipe "</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name << <span class="Constant">" can have only one 'surrounding' recipe but has "</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> Surrounding_space[r]<span class="Delimiter">).</span>name << <span class="Constant">" and "</span> << surrounding_recipe_name << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> + <span class="Identifier">continue</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">"name"</span><span class="Delimiter">)</span> << <span class="Constant">"lexically surrounding space for recipe "</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name << <span class="Constant">" comes from "</span> << surrounding_recipe_name << end<span class="Delimiter">();</span> +<span class="CommentedCode">//? cerr << "lexically surrounding space for recipe " << get(Recipe, r).name << " comes from " << surrounding_recipe_name << '\n';</span> + if <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> surrounding_recipe_name<span class="Delimiter">))</span> <span class="Delimiter">{</span> + raise << <span class="Constant">"can't find recipe providing surrounding space for "</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name << <span class="Constant">": "</span> << surrounding_recipe_name << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> + <span class="Identifier">continue</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + Surrounding_space[r] = get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> surrounding_recipe_name<span class="Delimiter">);</span> + <span class="Delimiter">}</span> + <span class="Delimiter">}</span> +<span class="Delimiter">}</span> + +<span class="Comment">//: Once surrounding spaces are available, transform_names uses them to handle</span> +<span class="Comment">//: /space properties.</span> + +<span class="Delimiter">:(replace{} "long long int lookup_name(const reagent& r, const recipe_ordinal default_recipe)")</span> +long long int lookup_name<span class="Delimiter">(</span>const reagent& x<span class="Delimiter">,</span> const recipe_ordinal default_recipe<span class="Delimiter">)</span> <span class="Delimiter">{</span> + if <span class="Delimiter">(</span>!has_property<span class="Delimiter">(</span>x<span class="Delimiter">,</span> <span class="Constant">"space"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> + if <span class="Delimiter">(</span>Name[default_recipe]<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> raise_error << <span class="Constant">"name not found: "</span> << x<span class="Delimiter">.</span>name << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> + <span class="Identifier">return</span> Name[default_recipe][x<span class="Delimiter">.</span>name]<span class="Delimiter">;</span> + <span class="Delimiter">}</span> + string_tree* p = property<span class="Delimiter">(</span>x<span class="Delimiter">,</span> <span class="Constant">"space"</span><span class="Delimiter">);</span> + if <span class="Delimiter">(</span>!p || p<span class="Delimiter">-></span>right<span class="Delimiter">)</span> raise_error << <span class="Constant">"/space property should have exactly one (non-negative integer) value</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> + long long int n = to_integer<span class="Delimiter">(</span>p<span class="Delimiter">-></span>value<span class="Delimiter">);</span> + assert<span class="Delimiter">(</span>n >= <span class="Constant">0</span><span class="Delimiter">);</span> + recipe_ordinal surrounding_recipe = lookup_surrounding_recipe<span class="Delimiter">(</span>default_recipe<span class="Delimiter">,</span> n<span class="Delimiter">);</span> + set<recipe_ordinal> done<span class="Delimiter">;</span> + vector<recipe_ordinal> path<span class="Delimiter">;</span> + <span class="Identifier">return</span> lookup_name<span class="Delimiter">(</span>x<span class="Delimiter">,</span> surrounding_recipe<span class="Delimiter">,</span> done<span class="Delimiter">,</span> path<span class="Delimiter">);</span> +<span class="Delimiter">}</span> + +<span class="Comment">// If the recipe we need to lookup this name in doesn't have names done yet,</span> +<span class="Comment">// recursively call transform_names on it.</span> +long long int lookup_name<span class="Delimiter">(</span>const reagent& x<span class="Delimiter">,</span> const recipe_ordinal r<span class="Delimiter">,</span> set<recipe_ordinal>& done<span class="Delimiter">,</span> vector<recipe_ordinal>& path<span class="Delimiter">)</span> <span class="Delimiter">{</span> + if <span class="Delimiter">(</span>!Name[r]<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span> Name[r][x<span class="Delimiter">.</span>name]<span class="Delimiter">;</span> + if <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>done<span class="Delimiter">,</span> r<span class="Delimiter">))</span> <span class="Delimiter">{</span> + raise_error << <span class="Constant">"can't compute address of "</span> << x<span class="Delimiter">.</span>to_string<span class="Delimiter">()</span> << <span class="Constant">" because "</span> << end<span class="Delimiter">();</span> + for <span class="Delimiter">(</span>long long int i = <span class="Constant">1</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>path<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> + raise_error << path<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i-<span class="Constant">1</span><span class="Delimiter">)</span> << <span class="Constant">" requires computing names of "</span> << path<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> + <span class="Delimiter">}</span> + raise_error << path<span class="Delimiter">.</span>at<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>path<span class="Delimiter">)</span>-<span class="Constant">1</span><span class="Delimiter">)</span> << <span class="Constant">" requires computing names of "</span> << r << <span class="Constant">"..ad infinitum</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span> + <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + done<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>r<span class="Delimiter">);</span> + path<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>r<span class="Delimiter">);</span> + transform_names<span class="Delimiter">(</span>r<span class="Delimiter">);</span> <span class="Comment">// Not passing 'done' through. Might this somehow cause an infinite loop?</span> + assert<span class="Delimiter">(</span>!Name[r]<span class="Delimiter">.</span>empty<span class="Delimiter">());</span> + <span class="Identifier">return</span> Name[r][x<span class="Delimiter">.</span>name]<span class="Delimiter">;</span> +<span class="Delimiter">}</span> + +recipe_ordinal lookup_surrounding_recipe<span class="Delimiter">(</span>const recipe_ordinal r<span class="Delimiter">,</span> long long int n<span class="Delimiter">)</span> <span class="Delimiter">{</span> + if <span class="Delimiter">(</span>n == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">return</span> r<span class="Delimiter">;</span> + if <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Surrounding_space<span class="Delimiter">,</span> r<span class="Delimiter">))</span> <span class="Delimiter">{</span> + raise_error << <span class="Constant">"don't know surrounding recipe of "</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> + <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + assert<span class="Delimiter">(</span>Surrounding_space[r]<span class="Delimiter">);</span> + <span class="Identifier">return</span> lookup_surrounding_recipe<span class="Delimiter">(</span>Surrounding_space[r]<span class="Delimiter">,</span> n-<span class="Constant">1</span><span class="Delimiter">);</span> +<span class="Delimiter">}</span> + +<span class="Comment">//: weaken use-before-set detection just a tad</span> +<span class="Delimiter">:(replace{} "bool already_transformed(const reagent& r, const map<string, long long int>& names)")</span> +bool already_transformed<span class="Delimiter">(</span>const reagent& r<span class="Delimiter">,</span> const map<string<span class="Delimiter">,</span> long long int>& names<span class="Delimiter">)</span> <span class="Delimiter">{</span> + if <span class="Delimiter">(</span>has_property<span class="Delimiter">(</span>r<span class="Delimiter">,</span> <span class="Constant">"space"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> + string_tree* p = property<span class="Delimiter">(</span>r<span class="Delimiter">,</span> <span class="Constant">"space"</span><span class="Delimiter">);</span> + if <span class="Delimiter">(</span>!p || p<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span> + raise_error << <span class="Constant">"/space property should have exactly one (non-negative integer) value in "</span> << r<span class="Delimiter">.</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span> + <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + if <span class="Delimiter">(</span>p<span class="Delimiter">-></span>value != <span class="Constant">"0"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span> + <span class="Delimiter">}</span> + <span class="Identifier">return</span> contains_key<span class="Delimiter">(</span>names<span class="Delimiter">,</span> r<span class="Delimiter">.</span>name<span class="Delimiter">);</span> +<span class="Delimiter">}</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |