<!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 - 037call_reply.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: 1em; } .traceContains { color: #008000; } .cSpecial { color: #008000; } .Constant { color: #008080; } .Comment { color: #8080ff; } .Delimiter { color: #c000c0; } .Special { color: #ff6060; } .CommentedCode { color: #6c6c6c; } .Identifier { color: #804000; } --> </style> <script type='text/javascript'> <!-- --> </script> </head> <body> <pre id='vimCodeElement'> <span class="Comment">//: Calls can also generate products, using 'reply'.</span> <span class="Delimiter">:(scenario reply)</span> recipe main [ <span class="Constant">1</span>:number<span class="Delimiter">,</span> <span class="Constant">2</span>:number<span class="Special"> <- </span>f <span class="Constant">34</span>:literal ] recipe f [ <span class="Constant">12</span>:number<span class="Special"> <- </span>next-ingredient <span class="Constant">13</span>:number<span class="Special"> <- </span>add <span class="Constant">1</span>:literal<span class="Delimiter">,</span> <span class="Constant">12</span>:number reply <span class="Constant">12</span>:number<span class="Delimiter">,</span> <span class="Constant">13</span>:number ] <span class="traceContains">+mem: storing 34 in location 1</span> <span class="traceContains">+mem: storing 35 in location 2</span> <span class="Delimiter">:(before "End Primitive Recipe Declarations")</span> REPLY<span class="Delimiter">,</span> <span class="Delimiter">:(before "End Primitive Recipe Numbers")</span> Recipe_number[<span class="Constant">"reply"</span>] = REPLY<span class="Delimiter">;</span> <span class="Delimiter">:(before "End Primitive Recipe Implementations")</span> case REPLY: <span class="Delimiter">{</span> const instruction& reply_inst = current_instruction<span class="Delimiter">();</span> <span class="Comment">// save pointer into recipe before pop</span> --Callstack_depth<span class="Delimiter">;</span> <span class="CommentedCode">//? if (tb_is_active()) { //? 1</span> <span class="CommentedCode">//? tb_clear(); //? 1</span> <span class="CommentedCode">//? cerr << Recipe[Current_routine->calls.front().running_recipe].name << ' ' << current_step_index() << '\n'; //? 1</span> <span class="CommentedCode">//? } //? 1</span> Current_routine<span class="Delimiter">-></span>calls<span class="Delimiter">.</span>pop_front<span class="Delimiter">();</span> <span class="Comment">// just in case 'main' returns a value, drop it for now</span> if <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>calls<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">goto</span> stop_running_current_routine<span class="Delimiter">;</span> const instruction& caller_instruction = current_instruction<span class="Delimiter">();</span> <span class="Comment">// make reply results available to caller</span> copy<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> ingredients<span class="Delimiter">.</span>end<span class="Delimiter">(),</span> inserter<span class="Delimiter">(</span>products<span class="Delimiter">,</span> products<span class="Delimiter">.</span>begin<span class="Delimiter">()));</span> <span class="Comment">// check that any reply ingredients with /same-as-ingredient connect up</span> <span class="Comment">// the corresponding ingredient and product in the caller.</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>caller_instruction<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> <span class="CommentedCode">//? cerr << Recipe[Current_routine->calls.front().running_recipe].name << '\n'; //? 1</span> trace<span class="Delimiter">(</span>Primitive_recipe_depth<span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"result "</span> << i << <span class="Constant">" is "</span> << to_string<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span> if <span class="Delimiter">(</span>has_property<span class="Delimiter">(</span>reply_inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> <span class="Constant">"same-as-ingredient"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span> vector<string> tmp = property<span class="Delimiter">(</span>reply_inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> <span class="Constant">"same-as-ingredient"</span><span class="Delimiter">);</span> assert<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>tmp<span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">);</span> long long int ingredient_index = to_integer<span class="Delimiter">(</span>tmp<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span> if <span class="Delimiter">(</span>caller_instruction<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>value != caller_instruction<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>ingredient_index<span class="Delimiter">).</span>value<span class="Delimiter">)</span> raise << <span class="Constant">"'same-as-ingredient' result "</span> << caller_instruction<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>value << <span class="Constant">" must be location "</span> << caller_instruction<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>ingredient_index<span class="Delimiter">).</span>value << <span class="cSpecial">'\n'</span><span class="Delimiter">;</span> <span class="Delimiter">}</span> <span class="Delimiter">}</span> <span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// continue to process rest of *caller* instruction</span> <span class="Delimiter">}</span> <span class="Comment">//: Products can include containers and exclusive containers, addresses and arrays.</span> <span class="Delimiter">:(scenario reply_container)</span> recipe main [ <span class="Constant">3</span>:point<span class="Special"> <- </span>f <span class="Constant">2</span>:literal ] recipe f [ <span class="Constant">12</span>:number<span class="Special"> <- </span>next-ingredient <span class="Constant">13</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>:literal reply <span class="Constant">12</span>:point/<span class="Special">raw</span> <span class="Comment"># unsafe</span> ] <span class="traceContains">+run: result 0 is [2, 35]</span> <span class="traceContains">+mem: storing 2 in location 3</span> <span class="traceContains">+mem: storing 35 in location 4</span> <span class="Comment">//: In mu we'd like to assume that any instruction doesn't modify its</span> <span class="Comment">//: ingredients unless they're also products. The /same-as-ingredient inside</span> <span class="Comment">//: the recipe's 'reply' will help catch accidental misuse of such</span> <span class="Comment">//: 'ingredient-results' (sometimes called in-out parameters in other languages).</span> <span class="Delimiter">:(scenario reply_same_as_ingredient)</span> <span class="Special">% Hide_warnings = true;</span> recipe main [ <span class="Constant">1</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>:literal <span class="Constant">2</span>:number<span class="Special"> <- </span>test1 <span class="Constant">1</span>:number <span class="Comment"># call with different ingredient and product</span> ] recipe test1 [ <span class="Constant">10</span>:address:number<span class="Special"> <- </span>next-ingredient reply <span class="Constant">10</span>:address:number/same-as-ingredient:<span class="Constant">0</span> ] <span class="traceContains">+warn: 'same-as-ingredient' result 2 must be location 1</span> <span class="Delimiter">:(code)</span> string to_string<span class="Delimiter">(</span>const vector<double>& in<span class="Delimiter">)</span> <span class="Delimiter">{</span> if <span class="Delimiter">(</span>in<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span> <span class="Constant">"[]"</span><span class="Delimiter">;</span> ostringstream out<span class="Delimiter">;</span> if <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>in<span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> out << in<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span> <span class="Delimiter">}</span> out << <span class="Constant">"["</span><span class="Delimiter">;</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>in<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span> if <span class="Delimiter">(</span>i > <span class="Constant">0</span><span class="Delimiter">)</span> out << <span class="Constant">", "</span><span class="Delimiter">;</span> out << in<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span> <span class="Delimiter">}</span> out << <span class="Constant">"]"</span><span class="Delimiter">;</span> <span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span> <span class="Delimiter">}</span> <span class="Comment">//: Conditional reply.</span> <span class="Delimiter">:(scenario reply_if)</span> recipe main [ <span class="Constant">1</span>:number<span class="Special"> <- </span>test1 ] recipe test1 [ reply-if <span class="Constant">0</span>:literal<span class="Delimiter">,</span> <span class="Constant">34</span>:literal reply <span class="Constant">35</span>:literal ] <span class="traceContains">+mem: storing 35 in location 1</span> <span class="Delimiter">:(scenario reply_if2)</span> recipe main [ <span class="Constant">1</span>:number<span class="Special"> <- </span>test1 ] recipe test1 [ reply-if <span class="Constant">1</span>:literal<span class="Delimiter">,</span> <span class="Constant">34</span>:literal reply <span class="Constant">35</span>:literal ] <span class="traceContains">+mem: storing 34 in location 1</span> <span class="Delimiter">:(before "End Rewrite Instruction(curr)")</span> <span class="Comment">// rewrite `reply-if a, b, c, ...` to</span> <span class="Comment">// ```</span> <span class="Comment">// jump-unless a, 1:offset</span> <span class="Comment">// reply b, c, ...</span> <span class="Comment">// ```</span> if <span class="Delimiter">(</span>curr<span class="Delimiter">.</span>name == <span class="Constant">"reply-if"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> assert<span class="Delimiter">(</span>curr<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">());</span> curr<span class="Delimiter">.</span>operation = Recipe_number[<span class="Constant">"jump-unless"</span>]<span class="Delimiter">;</span> vector<reagent> results<span class="Delimiter">;</span> copy<span class="Delimiter">(</span>++curr<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> curr<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>end<span class="Delimiter">(),</span> inserter<span class="Delimiter">(</span>results<span class="Delimiter">,</span> results<span class="Delimiter">.</span>end<span class="Delimiter">()));</span> curr<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span> curr<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span><span class="Constant">"1:offset"</span><span class="Delimiter">));</span> result<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>curr<span class="Delimiter">);</span> curr<span class="Delimiter">.</span>clear<span class="Delimiter">();</span> curr<span class="Delimiter">.</span>operation = Recipe_number[<span class="Constant">"reply"</span>]<span class="Delimiter">;</span> curr<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>swap<span class="Delimiter">(</span>results<span class="Delimiter">);</span> <span class="Delimiter">}</span> </pre> </body> </html> <!-- vim: set 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