about summary refs log blame commit diff stats
path: root/html/027call_ingredient.cc.html
blob: 704fe99d468aef476c19f496da45abcf7421b9c6 (plain) (tree)
1
2
3
4
5
6
7
8
9
10



                                                                                          
                                         

                                                
                                  

                                                                                         

                       
                                                                                                 
                                                                                            

                                      
                             
                                  
                            



                                                                           

        





                               

       
                         



                                                                                                      
          
                                   
 
       
                                                                                            
                                                                                                                                                                                        
 


                                                                  
          

   
       
                                                                                                                              



                                                                    
                                                                                                                
                                                                 
                                                                                          

                                                                                            
 
                                                                          
                                                                                                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                                                     
                                                             
                                                                                                                                                                               
                                



                                                                                      

                                                                                                                                                                                                                            

                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  

                                                                         


                                                                                         
                                                                                  
                                                                                                                                                                         
                                                                                                                                                                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                    
                                                                          
                                                                                                                                                                                                                                          

                                                                                                                                 
                                                                                                                                                          
                                                                                                                                                                                                                                                                                                                                    
                                    
                                                                                                                                                                                           
                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                                                                                                                                                                                
                                                                             
                                    
                                                                                     
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                       
                                                                                                              
                                  

                                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
                                                                                                                                                                                                                                                                             
                                                                                                                                                  
                                                                                                 

                                                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                       



                                                                       

                                                                          
          

   
       

                                                                                            
                                                                                  
 
                                                             
          
                                   
 
       
                                                                                                                                               

                                                                                                                                                                                            
                                                                                                                                                                                                                               








                                                                                      

                                                                                                                                                                                                                                  
                                                                                     

                                                                       
                                                                                         
                                                                                     
                                                                                                                                            



                                                                       
          
                                                                                                   
 
       
                                                                                                                                                                                       
                                                                                                                                                                                                                                            






                                                                                      

                                                                                                                                                                                                                  

                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    

                                                                         
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            

                                                                         


                                                                                         
                                                                             
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
                                                                                                                                                                                                                                                                                                                              
                                                                                     
                                                                                                                                                                                                                                                  
                                                                                                                                                                                                                                                                                                                                                                                             
                                                                                                                                                                                                                                                       
                                                                                                              
                                  

                                                                                                                                                                                                                                                                                                          


                                                                                                                                                                                                                                                                                                                                                     



                                                                       











                                                                                                                                                                                                                                                                                                                                                      


       
                                     
<!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 - 027call_ingredient.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">//: Calls can take ingredients just like primitives. To access a recipe's</span>
<span class="Comment">//: ingredients, use 'next-ingredient'.</span>

<span class="Delimiter">:(scenario next_ingredient)</span>
def main [
  f <span class="Constant">2</span>
]
def f [
  <span class="Constant">12</span>:number<span class="Special"> &lt;- </span>next-ingredient
  <span class="Constant">13</span>:number<span class="Special"> &lt;- </span>add <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">12</span>:number
]
<span class="traceContains">+mem: storing 3 in location 13</span>

<span class="Delimiter">:(scenario next_ingredient_missing)</span>
def main [
  f
]
def f [
  _<span class="Delimiter">,</span> <span class="Constant">12</span>:number<span class="Special"> &lt;- </span>next-ingredient
]
<span class="traceContains">+mem: storing 0 in location 12</span>

<span class="Delimiter">:(before &quot;End call Fields&quot;)</span>
vector&lt;vector&lt;<span class="Normal">double</span>&gt; &gt; ingredient_atoms<span class="Delimiter">;</span>
vector&lt;reagent&gt; ingredients<span class="Delimiter">;</span>
<span class="Normal">int</span> next_ingredient_to_process<span class="Delimiter">;</span>
<span class="Delimiter">:(before &quot;End call Constructor&quot;)</span>
next_ingredient_to_process = <span class="Constant">0</span><span class="Delimiter">;</span>

<span class="Delimiter">:(before &quot;End Call Housekeeping&quot;)</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 &lt; SIZE<span class="Delimiter">(</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  current_call<span class="Delimiter">().</span>ingredient_atoms<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> ingredient = call_instruction<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
  <span class="Comment">// End Compute Call Ingredient</span>
  current_call<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>ingredient<span class="Delimiter">);</span>
<span class="Delimiter">}</span>

<span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
NEXT_INGREDIENT<span class="Delimiter">,</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;next-ingredient&quot;</span><span class="Delimiter">,</span> NEXT_INGREDIENT<span class="Delimiter">);</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
<span class="Normal">case</span> NEXT_INGREDIENT: <span class="Delimiter">{</span>
  <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
    raise &lt;&lt; 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> &lt;&lt; <span class="Constant">&quot;'next-ingredient' didn't expect any ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
    <span class="Identifier">break</span><span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
<span class="Normal">case</span> NEXT_INGREDIENT: <span class="Delimiter">{</span>
  assert<span class="Delimiter">(</span>!Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
  <span class="Normal">if</span> <span class="Delimiter">(</span>current_call<span class="Delimiter">().</span>next_ingredient_to_process &lt; SIZE<span class="Delimiter">(</span>current_call<span class="Delimiter">().</span>ingredient_atoms<span class="Delimiter">))</span> <span class="Delimiter">{</span>
    reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = current_instruction<span class="Delimiter">().</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
    <span class="Comment">// End Preprocess NEXT_INGREDIENT product</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">()</span> == <span class="Constant">&quot;main&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
      <span class="Comment">// no ingredient types since the call might be implicit; assume ingredients are always strings</span>
      <span class="Comment">// todo: how to test this?</span>
      <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_string<span class="Delimiter">(</span>product<span class="Delimiter">))</span>
        raise &lt;&lt; <span class="Constant">&quot;main: wrong type for ingredient '&quot;</span> &lt;&lt; product<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
    <span class="Delimiter">}</span>
    <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>product<span class="Delimiter">,</span>
                              current_call<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>current_call<span class="Delimiter">().</span>next_ingredient_to_process<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
      raise &lt;&lt; maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;wrong type for ingredient '&quot;</span> &lt;&lt; product<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
      <span class="Comment">// End next-ingredient Type Mismatch Error</span>
    <span class="Delimiter">}</span>
    products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>
        current_call<span class="Delimiter">().</span>ingredient_atoms<span class="Delimiter">.</span>at<span class="Delimiter">(</span>current_call<span class="Delimiter">().</span>next_ingredient_to_process<span class="Delimiter">));</span>
    assert<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>products<span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">);</span>  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span>  <span class="Comment">// push a new vector</span>
    products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
    ++current_call<span class="Delimiter">().</span>next_ingredient_to_process<span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
  <span class="Normal">else</span> <span class="Delimiter">{</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>products<span class="Delimiter">)</span> &lt; <span class="Constant">2</span><span class="Delimiter">)</span>
      raise &lt;&lt; maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;no ingredient to save in '&quot;</span> &lt;&lt; current_instruction<span class="Delimiter">().</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
    products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span>
    <span class="Comment">// pad the first product with sufficient zeros to match its type</span>
    <span class="Normal">int</span> size = size_of<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><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 &lt; size<span class="Delimiter">;</span> ++i<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><span class="Constant">0</span><span class="Delimiter">);</span>
    products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
  <span class="Delimiter">}</span>
  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>

<span class="Delimiter">:(scenario next_ingredient_fail_on_missing)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
  f
]
def f [
  <span class="Constant">11</span>:number<span class="Special"> &lt;- </span>next-ingredient
]
<span class="traceContains">+error: f: no ingredient to save in '11:number'</span>

<span class="Delimiter">:(scenario rewind_ingredients)</span>
def main [
  f <span class="Constant">2</span>
]
def f [
  <span class="Constant">12</span>:number<span class="Special"> &lt;- </span>next-ingredient  <span class="Comment"># consume ingredient</span>
  _<span class="Delimiter">,</span> <span class="Constant">1</span>:boolean<span class="Special"> &lt;- </span>next-ingredient  <span class="Comment"># will not find any ingredients</span>
  rewind-ingredients
  <span class="Constant">13</span>:number<span class="Delimiter">,</span> <span class="Constant">2</span>:boolean<span class="Special"> &lt;- </span>next-ingredient  <span class="Comment"># will find ingredient again</span>
]
<span class="traceContains">+mem: storing 2 in location 12</span>
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="traceContains">+mem: storing 2 in location 13</span>
<span class="traceContains">+mem: storing 1 in location 2</span>

<span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
REWIND_INGREDIENTS<span class="Delimiter">,</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;rewind-ingredients&quot;</span><span class="Delimiter">,</span> REWIND_INGREDIENTS<span class="Delimiter">);</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
<span class="Normal">case</span> REWIND_INGREDIENTS: <span class="Delimiter">{</span>
  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
<span class="Normal">case</span> REWIND_INGREDIENTS: <span class="Delimiter">{</span>
  current_call<span class="Delimiter">().</span>next_ingredient_to_process = <span class="Constant">0</span><span class="Delimiter">;</span>
  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>

<span class="Delimiter">:(scenario ingredient)</span>
def main [
  f <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">2</span>
]
def f [
  <span class="Constant">12</span>:number<span class="Special"> &lt;- </span>ingredient <span class="Constant">1</span>  <span class="Comment"># consume second ingredient first</span>
  <span class="Constant">13</span>:number<span class="Delimiter">,</span> <span class="Constant">1</span>:boolean<span class="Special"> &lt;- </span>next-ingredient  <span class="Comment"># next-ingredient tries to scan past that</span>
]
<span class="traceContains">+mem: storing 2 in location 12</span>
<span class="traceContains">+mem: storing 0 in location 1</span>

<span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
INGREDIENT<span class="Delimiter">,</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;ingredient&quot;</span><span class="Delimiter">,</span> INGREDIENT<span class="Delimiter">);</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
<span class="Normal">case</span> INGREDIENT: <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 &lt;&lt; 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> &lt;&lt; <span class="Constant">&quot;'ingredient' expects exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
    <span class="Identifier">break</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><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<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="Delimiter">{</span>
    raise &lt;&lt; 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> &lt;&lt; <span class="Constant">&quot;'ingredient' expects a literal ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
    <span class="Identifier">break</span><span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
<span class="Normal">case</span> INGREDIENT: <span class="Delimiter">{</span>
  <span class="Normal">if</span> <span class="Delimiter">(</span><span class="Normal">static_cast</span>&lt;<span class="Normal">int</span>&gt;<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt; SIZE<span class="Delimiter">(</span>current_call<span class="Delimiter">().</span>ingredient_atoms<span class="Delimiter">))</span> <span class="Delimiter">{</span>
    current_call<span class="Delimiter">().</span>next_ingredient_to_process = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
    products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>
        current_call<span class="Delimiter">().</span>ingredient_atoms<span class="Delimiter">.</span>at<span class="Delimiter">(</span>current_call<span class="Delimiter">().</span>next_ingredient_to_process<span class="Delimiter">));</span>
    assert<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>products<span class="Delimiter">)</span> == <span class="Constant">1</span><span class="Delimiter">);</span>  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span>  <span class="Comment">// push a new vector</span>
    products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
    ++current_call<span class="Delimiter">().</span>next_ingredient_to_process<span class="Delimiter">;</span>
  <span class="Delimiter">}</span>
  <span class="Normal">else</span> <span class="Delimiter">{</span>
    <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
      products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">2</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><span class="Constant">0</span><span class="Delimiter">);</span>  <span class="Comment">// todo: will fail noisily if we try to read a compound value</span>
      products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
    <span class="Delimiter">}</span>
  <span class="Delimiter">}</span>
  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>

<span class="Comment">//: a particularly common array type is the string, or address:array:character</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">bool</span> is_mu_string<span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
  <span class="Identifier">return</span> x<span class="Delimiter">.</span>type
    &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>value == get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;address&quot;</span><span class="Delimiter">)</span>
    &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right
    &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>value == get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;array&quot;</span><span class="Delimiter">)</span>
    &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right
    &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>value == get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;character&quot;</span><span class="Delimiter">)</span>
    &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right == <span class="Constant">NULL</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->