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.TH DWM 1 dwm\-VERSION
.SH NAME
dwm \- dynamic window manager
.SH SYNOPSIS
.B dwm
.RB [ \-v ]
.SH DESCRIPTION
dwm is a dynamic window manager for X. It manages windows in tiled, monocle
and floating layouts. Either layout can be applied dynamically, optimising the
environment for the application in use and the task performed.
.P
In tiled layouts windows are managed in a master and stacking area. The master
area contains the window which currently needs most attention, whereas the
stacking area contains all other windows. In monocle layout all windows are
maximised to the screen size. In floating layout windows can be resized and
moved freely. Dialog windows are always managed floating, regardless of the
layout applied.
.P
Windows are grouped by tags. Each window can be tagged with one or multiple
tags. Selecting certain tags displays all windows with these tags.
.P
Each screen contains a small status bar which displays all available tags, the
layout, the title of the focused window, and the text read from the root window
name property, if the screen is focused. A floating window is indicated with an
empty square and a maximised floating window is indicated with a filled square
before the windows title.  The selected tags are indicated with a different
color. The tags of the focused window are indicated with a filled square in the
top left corner.  The tags which are applied to one or more windows are
indicated with an empty square in the top left corner.
.P
dwm draws a small border around windows to indicate the focus state.
.SH OPTIONS
.TP
.B \-v
prints version information to standard output, then exits.
.SH USAGE
.SS Status bar
.TP
.B X root window name
is read and displayed in the status text area. It can be set with the
.BR xsetroot (1)
command.
.TP
.B Button1
click on a tag label to display all windows with that tag, click on the layout
label toggles between tiled and floating layout.
.TP
.B Button3
click on a tag label adds/removes all windows with that tag to/from the view.
.TP
.B Mod1\-Button1
click on a tag label applies that tag to the focused window.
.TP
.B Mod1\-Button3
click on a tag label adds/removes that tag to/from the focused window.
.SS Keyboard commands
.TP
.B Mod1\-Shift\-Return
Start
.BR uxterm (1).
.TP
.B Mod1\-,
Focus previous screen, if any.
.TP
.B Mod1\-.
Focus next screen, if any.
.TP
.B Mod1\-Shift\-,
Send focused window to previous screen, if any.
.TP
.B Mod1\-Shift\-.
Send focused window to next screen, if any.
.TP
.B Mod1\-b
Toggles bar on and off.
.TP
.B Mod1\-t
Sets tiled layout.
.TP
.B Mod1\-f
Sets floating layout.
.TP
.B Mod1\-m
Sets monocle layout.
.TP
.B Mod1\-space
Toggles between current and previous layout.
.TP
.B Mod1\-j
Focus next window.
.TP
.B Mod1\-k
Focus previous window.
.TP
.B Mod1\-i
Increase clients in master area.
.TP
.B Mod1\-d
Decrease clients in master area.
.TP
.B Mod1\-l
Increase master area size.
.TP
.B Mod1\-h
Decrease master area size.
.TP
.B Mod1\-Return
Zooms/cycles focused window to/from master area (tiled layouts only).
.TP
.B Mod1\-Shift\-c
Close focused window.
.TP
.B Mod1\-Shift\-space
Toggle focused window between tiled and floating state.
.TP
.B Mod1\-Tab
Toggles to the previously selected tags.
.TP
.B Mod1\-Shift\-[1..n]
Apply nth tag to focused window.
.TP
.B Mod1\-Shift\-0
Apply all tags to focused window.
.TP
.B Mod1\-Control\-Shift\-[1..n]
Add/remove nth tag to/from focused window.
.TP
.B Mod1\-[1..n]
View all windows with nth tag.
.TP
.B Mod1\-0
View all windows with any tag.
.TP
.B Mod1\-Control\-[1..n]
Add/remove all windows with nth tag to/from the view.
.TP
.B Mod1\-Shift\-q
Quit dwm.
.SS Mouse commands
.TP
.B Mod1\-Button1
Move focused window while dragging. Tiled windows will be toggled to the floating state.
.TP
.B Mod1\-Button2
Toggles focused window between floating and tiled state.
.TP
.B Mod1\-Button3
Resize focused window while dragging. Tiled windows will be toggled to the floating state.
.SH CUSTOMIZATION
dwm is customized by creating a custom config.h and (re)compiling the source
code. This keeps it fast, secure and simple.
.SH SEE ALSO
.BR dmenu (1)
.SH BUGS
Java applications which use the XToolkit/XAWT backend may draw grey windows
only. The XToolkit/XAWT backend breaks ICCCM-compliance in recent JDK 1.5 and early
JDK 1.6 versions, because it assumes a reparenting window manager. Possible workarounds
are using JDK 1.4 (which doesn't contain the XToolkit/XAWT backend) or setting the
environment variable
.BR AWT_TOOLKIT=MToolkit
(to use the older Motif backend instead) or running
.B xprop -root -f _NET_WM_NAME 32a -set _NET_WM_NAME LG3D
or
.B wmname LG3D
(to pretend that a non-reparenting window manager is running that the
XToolkit/XAWT backend can recognize) or when using OpenJDK setting the environment variable
.BR _JAVA_AWT_WM_NONREPARENTING=1 .
.P
GTK 2.10.9+ versions contain a broken
.BR Save\-As
file dialog implementation,
which requests to reconfigure its window size in an endless loop. However, its
window is still respondable during this state, so you can simply ignore the flicker
until a new GTK version appears, which will fix this bug, approximately
GTK 2.10.12+ versions.
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<span id="L1" class="LineNr">  1 </span><span class="Comment">//: Arrays contain a variable number of elements of the same type. Their value</span>
<span id="L2" class="LineNr">  2 </span><span class="Comment">//: starts with the length of the array.</span>
<span id="L3" class="LineNr">  3 </span><span class="Comment">//:</span>
<span id="L4" class="LineNr">  4 </span><span class="Comment">//: You can create arrays of containers, but containers can only contain</span>
<span id="L5" class="LineNr">  5 </span><span class="Comment">//: elements of a fixed size, so you can't create containers containing arrays.</span>
<span id="L6" class="LineNr">  6 </span><span class="Comment">//: Create containers containing addresses to arrays instead.</span>
<span id="L7" class="LineNr">  7 </span>
<span id="L8" class="LineNr">  8 </span><span class="Comment">//: You can create arrays using 'create-array'.</span>
<span id="L9" class="LineNr">  9 </span><span class="Delimiter">:(scenario create_array)</span>
<span id="L10" class="LineNr"> 10 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L11" class="LineNr"> 11 </span>  <span class="Comment"># create an array occupying locations 1 (for the size) and 2-4 (for the elements)</span>
<span id="L12" class="LineNr"> 12 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L13" class="LineNr"> 13 </span>]
<span id="L14" class="LineNr"> 14 </span><span class="traceContains">+run: creating array from 4 locations</span>
<span id="L15" class="LineNr"> 15 </span>
<span id="L16" class="LineNr"> 16 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
<span id="L17" class="LineNr"> 17 </span>CREATE_ARRAY<span class="Delimiter">,</span>
<span id="L18" class="LineNr"> 18 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
<span id="L19" class="LineNr"> 19 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;create-array&quot;</span><span class="Delimiter">,</span> CREATE_ARRAY<span class="Delimiter">);</span>
<span id="L20" class="LineNr"> 20 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
<span id="L21" class="LineNr"> 21 </span><span class="Normal">case</span> CREATE_ARRAY: <span class="Delimiter">{</span>
<span id="L22" class="LineNr"> 22 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
<span id="L23" class="LineNr"> 23 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;'create-array' needs one product and no ingredients but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
<span id="L24" class="LineNr"> 24 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L25" class="LineNr"> 25 </span>  <span class="Delimiter">}</span>
<span id="L26" class="LineNr"> 26 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L27" class="LineNr"> 27 </span>  <span class="Comment">// Update CREATE_ARRAY product in Check</span>
<span id="L28" class="LineNr"> 28 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_array<span class="Delimiter">(</span>product<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L29" class="LineNr"> 29 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;'create-array' cannot create non-array '&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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L30" class="LineNr"> 30 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L31" class="LineNr"> 31 </span>  <span class="Delimiter">}</span>
<span id="L32" class="LineNr"> 32 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L33" class="LineNr"> 33 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;create array of what? '&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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L34" class="LineNr"> 34 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L35" class="LineNr"> 35 </span>  <span class="Delimiter">}</span>
<span id="L36" class="LineNr"> 36 </span>  <span class="Comment">// 'create-array' will need to check properties rather than types</span>
<span id="L37" class="LineNr"> 37 </span>  type_tree* array_length_from_type = product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
<span id="L38" class="LineNr"> 38 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!array_length_from_type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L39" class="LineNr"> 39 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;create array of what size? '&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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L40" class="LineNr"> 40 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L41" class="LineNr"> 41 </span>  <span class="Delimiter">}</span>
<span id="L42" class="LineNr"> 42 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span>
<span id="L43" class="LineNr"> 43 </span>    array_length_from_type = array_length_from_type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
<span id="L44" class="LineNr"> 44 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_integer<span class="Delimiter">(</span>array_length_from_type<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L45" class="LineNr"> 45 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;'create-array' product should specify size of array after its element type, but got '&quot;</span> &lt;&lt; product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>name &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L46" class="LineNr"> 46 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L47" class="LineNr"> 47 </span>  <span class="Delimiter">}</span>
<span id="L48" class="LineNr"> 48 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L49" class="LineNr"> 49 </span><span class="Delimiter">}</span>
<span id="L50" class="LineNr"> 50 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
<span id="L51" class="LineNr"> 51 </span><span class="Normal">case</span> CREATE_ARRAY: <span class="Delimiter">{</span>
<span id="L52" class="LineNr"> 52 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = <a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L53" class="LineNr"> 53 </span>  <span class="Comment">// Update CREATE_ARRAY product in Run</span>
<span id="L54" class="LineNr"> 54 </span>  <span class="Normal">int</span> base_address = product<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
<span id="L55" class="LineNr"> 55 </span>  type_tree* array_length_from_type = product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
<span id="L56" class="LineNr"> 56 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span>
<span id="L57" class="LineNr"> 57 </span>    array_length_from_type = array_length_from_type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
<span id="L58" class="LineNr"> 58 </span>  <span class="Normal">int</span> <a href='032array.cc.html#L319'>array_length</a> = to_integer<span class="Delimiter">(</span>array_length_from_type<span class="Delimiter">-&gt;</span>name<span class="Delimiter">);</span>
<span id="L59" class="LineNr"> 59 </span>  <span class="Comment">// initialize array length, so that size_of will work</span>
<span id="L60" class="LineNr"> 60 </span>  <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing &quot;</span> &lt;&lt; <a href='032array.cc.html#L319'>array_length</a> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; base_address &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L61" class="LineNr"> 61 </span>  <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">,</span> <a href='032array.cc.html#L319'>array_length</a><span class="Delimiter">);</span>  <span class="Comment">// in array elements</span>
<span id="L62" class="LineNr"> 62 </span>  <span class="Normal">int</span> size = size_of<span class="Delimiter">(</span>product<span class="Delimiter">);</span>  <span class="Comment">// in locations</span>
<span id="L63" class="LineNr"> 63 </span>  <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;creating array from &quot;</span> &lt;&lt; size &lt;&lt; <span class="Constant">&quot; locations&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L64" class="LineNr"> 64 </span>  <span class="Comment">// initialize array</span>
<span id="L65" class="LineNr"> 65 </span>  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">1</span><span class="Delimiter">;</span>  i &lt;= size_of<span class="Delimiter">(</span>product<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span>
<span id="L66" class="LineNr"> 66 </span>    <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address+i<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L67" class="LineNr"> 67 </span>  <span class="Comment">// no need to update product</span>
<span id="L68" class="LineNr"> 68 </span>  write_products =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L69" class="LineNr"> 69 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L70" class="LineNr"> 70 </span><span class="Delimiter">}</span>
<span id="L71" class="LineNr"> 71 </span>
<span id="L72" class="LineNr"> 72 </span><span class="Delimiter">:(scenario copy_array)</span>
<span id="L73" class="LineNr"> 73 </span><span class="Comment"># Arrays can be copied around with a single instruction just like numbers,</span>
<span id="L74" class="LineNr"> 74 </span><span class="Comment"># no matter how large they are.</span>
<span id="L75" class="LineNr"> 75 </span><span class="Comment"># You don't need to pass the size around, since each array variable stores its</span>
<span id="L76" class="LineNr"> 76 </span><span class="Comment"># size in memory at run-time. We'll call a variable with an explicit size a</span>
<span id="L77" class="LineNr"> 77 </span><span class="Comment"># 'static' array, and one without a 'dynamic' array since it can contain</span>
<span id="L78" class="LineNr"> 78 </span><span class="Comment"># arrays of many different sizes.</span>
<span id="L79" class="LineNr"> 79 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L80" class="LineNr"> 80 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L81" class="LineNr"> 81 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
<span id="L82" class="LineNr"> 82 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
<span id="L83" class="LineNr"> 83 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
<span id="L84" class="LineNr"> 84 </span>  <span class="Constant">5</span>:array:num<span class="Special"> &lt;- </span>copy <span class="Constant">1</span>:array:num:<span class="Constant">3</span>
<span id="L85" class="LineNr"> 85 </span>]
<span id="L86" class="LineNr"> 86 </span><span class="traceContains">+mem: storing 3 in location 5</span>
<span id="L87" class="LineNr"> 87 </span><span class="traceContains">+mem: storing 14 in location 6</span>
<span id="L88" class="LineNr"> 88 </span><span class="traceContains">+mem: storing 15 in location 7</span>
<span id="L89" class="LineNr"> 89 </span><span class="traceContains">+mem: storing 16 in location 8</span>
<span id="L90" class="LineNr"> 90 </span>
<span id="L91" class="LineNr"> 91 </span><span class="Delimiter">:(scenario stash_array)</span>
<span id="L92" class="LineNr"> 92 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L93" class="LineNr"> 93 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L94" class="LineNr"> 94 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
<span id="L95" class="LineNr"> 95 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
<span id="L96" class="LineNr"> 96 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
<span id="L97" class="LineNr"> 97 </span>  stash [foo:]<span class="Delimiter">,</span> <span class="Constant">1</span>:array:num:<span class="Constant">3</span>
<span id="L98" class="LineNr"> 98 </span>]
<span id="L99" class="LineNr"> 99 </span><span class="traceContains">+app: foo: 3 14 15 16</span>
<span id="L100" class="LineNr">100 </span>
<span id="L101" class="LineNr">101 </span><span class="Delimiter">:(before &quot;End <a href='021check_instruction.cc.html#L91'>types_coercible</a> Special-cases&quot;)</span>
<span id="L102" class="LineNr">102 </span><span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_array<span class="Delimiter">(</span>from<span class="Delimiter">)</span> &amp;&amp; is_mu_array<span class="Delimiter">(</span>to<span class="Delimiter">))</span>
<span id="L103" class="LineNr">103 </span>  <span class="Identifier">return</span> types_strictly_match<span class="Delimiter">(</span><a href='032array.cc.html#L303'>array_element</a><span class="Delimiter">(</span>from<span class="Delimiter">.</span>type<span class="Delimiter">),</span> <a href='032array.cc.html#L303'>array_element</a><span class="Delimiter">(</span>to<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
<span id="L104" class="LineNr">104 </span>
<span id="L105" class="LineNr">105 </span><span class="Delimiter">:(before &quot;End size_of(reagent r) Special-cases&quot;)</span>
<span id="L106" class="LineNr">106 </span><span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>value == Array_type_ordinal<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L107" class="LineNr">107 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L108" class="LineNr">108 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'&quot;</span> &lt;&lt; r<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' is an array of what?</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L109" class="LineNr">109 </span>    <span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
<span id="L110" class="LineNr">110 </span>  <span class="Delimiter">}</span>
<span id="L111" class="LineNr">111 </span>  <span class="Identifier">return</span> <span class="Comment">/*</span><span class="Comment">space for length</span><span class="Comment">*/</span><span class="Constant">1</span> + <a href='032array.cc.html#L319'>array_length</a><span class="Delimiter">(</span>r<span class="Delimiter">)</span>*size_of<span class="Delimiter">(</span><a href='032array.cc.html#L303'>array_element</a><span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
<span id="L112" class="LineNr">112 </span><span class="Delimiter">}</span>
<span id="L113" class="LineNr">113 </span>
<span id="L114" class="LineNr">114 </span><span class="Delimiter">:(before &quot;End size_of(type) Non-atom Special-cases&quot;)</span>
<span id="L115" class="LineNr">115 </span><span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>value == Array_type_ordinal<span class="Delimiter">)</span> <span class="Identifier">return</span> <a href='032array.cc.html#L117'>static_array_length</a><span class="Delimiter">(</span>type<span class="Delimiter">);</span>
<span id="L116" class="LineNr">116 </span><span class="Delimiter">:(code)</span>
<span id="L117" class="LineNr">117 </span><span class="Normal">int</span> <a href='032array.cc.html#L117'>static_array_length</a><span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L118" class="LineNr">118 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>atom &amp;&amp; type<span class="Delimiter">-&gt;</span>right &amp;&amp; !type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom &amp;&amp; type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right &amp;&amp; !type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom &amp;&amp; !type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right  <span class="Comment">// exactly 3 types</span>
<span id="L119" class="LineNr">119 </span>      &amp;&amp; type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left &amp;&amp; type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; is_integer<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>  <span class="Comment">// third 'type' is a number</span>
<span id="L120" class="LineNr">120 </span>    <span class="Comment">// get size from type</span>
<span id="L121" class="LineNr">121 </span>    <span class="Identifier">return</span> to_integer<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">);</span>
<span id="L122" class="LineNr">122 </span>  <span class="Delimiter">}</span>
<span id="L123" class="LineNr">123 </span>  cerr &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
<span id="L124" class="LineNr">124 </span>  assert<span class="Delimiter">(</span><span class="Constant">false</span><span class="Delimiter">);</span>
<span id="L125" class="LineNr">125 </span><span class="Delimiter">}</span>
<span id="L126" class="LineNr">126 </span>
<span id="L127" class="LineNr">127 </span><span class="Comment">//: disable the size mismatch check for arrays since the destination array</span>
<span id="L128" class="LineNr">128 </span><span class="Comment">//: need not be initialized</span>
<span id="L129" class="LineNr">129 </span><span class="Delimiter">:(before &quot;End size_mismatch(x) Special-cases&quot;)</span>
<span id="L130" class="LineNr">130 </span><span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>type &amp;&amp; !x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &amp;&amp; x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>value == Array_type_ordinal<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L131" class="LineNr">131 </span>
<span id="L132" class="LineNr">132 </span><span class="SalientComment">//:: arrays inside containers</span>
<span id="L133" class="LineNr">133 </span><span class="Comment">//: arrays are disallowed inside containers unless their length is fixed in</span>
<span id="L134" class="LineNr">134 </span><span class="Comment">//: advance</span>
<span id="L135" class="LineNr">135 </span>
<span id="L136" class="LineNr">136 </span><span class="Delimiter">:(scenario container_permits_static_array_element)</span>
<span id="L137" class="LineNr">137 </span><span class="muData">container</span> foo [
<span id="L138" class="LineNr">138 </span>  <span class="Normal">x</span>:array:num:<span class="Constant">3</span>
<span id="L139" class="LineNr">139 </span>]
<span id="L140" class="LineNr">140 </span>$error: <span class="Constant">0</span>
<span id="L141" class="LineNr">141 </span>
<span id="L142" class="LineNr">142 </span><span class="Delimiter">:(before &quot;End <a href='030container.cc.html#L446'>insert_container</a> Special-cases&quot;)</span>
<span id="L143" class="LineNr">143 </span><span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>is_integer<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>  <span class="Comment">// sometimes types will contain non-type tags, like numbers for the size of an array</span>
<span id="L144" class="LineNr">144 </span>  type<span class="Delimiter">-&gt;</span>value = <span class="Constant">0</span><span class="Delimiter">;</span>
<span id="L145" class="LineNr">145 </span><span class="Delimiter">}</span>
<span id="L146" class="LineNr">146 </span>
<span id="L147" class="LineNr">147 </span><span class="Delimiter">:(scenario container_disallows_dynamic_array_element)</span>
<span id="L148" class="LineNr">148 </span><span class="Special">% Hide_errors = true;</span>
<span id="L149" class="LineNr">149 </span><span class="muData">container</span> foo [
<span id="L150" class="LineNr">150 </span>  <span class="Normal">x</span>:array:num
<span id="L151" class="LineNr">151 </span>]
<span id="L152" class="LineNr">152 </span><span class="traceContains">+error: container 'foo' cannot determine size of element 'x'</span>
<span id="L153" class="LineNr">153 </span>
<span id="L154" class="LineNr">154 </span><span class="Delimiter">:(before &quot;End Load Container Element Definition&quot;)</span>
<span id="L155" class="LineNr">155 </span><span class="Delimiter">{</span>
<span id="L156" class="LineNr">156 </span>  <span class="Normal">const</span> type_tree* type = info<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>back<span class="Delimiter">().</span>type<span class="Delimiter">;</span>
<span id="L157" class="LineNr">157 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type &amp;&amp; type<span class="Delimiter">-&gt;</span>atom &amp;&amp; type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;array&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L158" class="LineNr">158 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;container '&quot;</span> &lt;&lt; name &lt;&lt; <span class="Constant">&quot;' doesn't specify type of array elements for '&quot;</span> &lt;&lt; info<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>back<span class="Delimiter">().</span>name &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 id="L159" class="LineNr">159 </span>    <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L160" class="LineNr">160 </span>  <span class="Delimiter">}</span>
<span id="L161" class="LineNr">161 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type &amp;&amp; !type<span class="Delimiter">-&gt;</span>atom &amp;&amp; type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;array&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L162" class="LineNr">162 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L163" class="LineNr">163 </span>      <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;container '&quot;</span> &lt;&lt; name &lt;&lt; <span class="Constant">&quot;' doesn't specify type of array elements for '&quot;</span> &lt;&lt; info<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>back<span class="Delimiter">().</span>name &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 id="L164" class="LineNr">164 </span>      <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L165" class="LineNr">165 </span>    <span class="Delimiter">}</span>
<span id="L166" class="LineNr">166 </span>    <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right || !is_integer<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>  <span class="Comment">// array has no length</span>
<span id="L167" class="LineNr">167 </span>      <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;container '&quot;</span> &lt;&lt; name &lt;&lt; <span class="Constant">&quot;' cannot determine size of element '&quot;</span> &lt;&lt; info<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>back<span class="Delimiter">().</span>name &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L168" class="LineNr">168 </span>      <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L169" class="LineNr">169 </span>    <span class="Delimiter">}</span>
<span id="L170" class="LineNr">170 </span>  <span class="Delimiter">}</span>
<span id="L171" class="LineNr">171 </span><span class="Delimiter">}</span>
<span id="L172" class="LineNr">172 </span>
<span id="L173" class="LineNr">173 </span><span class="Comment">//: disable the size mismatch check for 'merge' instructions since containers</span>
<span id="L174" class="LineNr">174 </span><span class="Comment">//: can contain arrays, and since we already do plenty of checking for them</span>
<span id="L175" class="LineNr">175 </span><span class="Delimiter">:(before &quot;End size_mismatch(x) Special-cases&quot;)</span>
<span id="L176" class="LineNr">176 </span><span class="Normal">if</span> <span class="Delimiter">(</span><a href='026call.cc.html#L83'>current_call</a><span class="Delimiter">().</span>running_step_index &lt; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> <a href='026call.cc.html#L83'>current_call</a><span class="Delimiter">().</span>running_recipe<span class="Delimiter">).</span>steps<span class="Delimiter">)</span>
<span id="L177" class="LineNr">177 </span>    &amp;&amp; <a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>operation == MERGE<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L178" class="LineNr">178 </span>  <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L179" class="LineNr">179 </span><span class="Delimiter">}</span>
<span id="L180" class="LineNr">180 </span>
<span id="L181" class="LineNr">181 </span><span class="Delimiter">:(scenario merge_static_array_into_container)</span>
<span id="L182" class="LineNr">182 </span><span class="muData">container</span> foo [
<span id="L183" class="LineNr">183 </span>  <span class="Normal">x</span>:num
<span id="L184" class="LineNr">184 </span>  <span class="Normal">y</span>:array:num:<span class="Constant">3</span>
<span id="L185" class="LineNr">185 </span>]
<span id="L186" class="LineNr">186 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L187" class="LineNr">187 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L188" class="LineNr">188 </span>  <span class="Constant">10</span>:foo<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">1</span>:array:num:<span class="Constant">3</span>
<span id="L189" class="LineNr">189 </span>]
<span id="L190" class="LineNr">190 </span><span class="Comment"># no errors</span>
<span id="L191" class="LineNr">191 </span>
<span id="L192" class="LineNr">192 </span><span class="Delimiter">:(scenario code_inside_container)</span>
<span id="L193" class="LineNr">193 </span><span class="Special">% Hide_errors = true;</span>
<span id="L194" class="LineNr">194 </span><span class="muData">container</span> card [
<span id="L195" class="LineNr">195 </span>  <span class="Normal">rank</span>:num<span class="Special"> &lt;- </span>next-ingredient
<span id="L196" class="LineNr">196 </span>]
<span id="L197" class="LineNr">197 </span><span class="muRecipe">def</span> foo [
<span id="L198" class="LineNr">198 </span>  <span class="Constant">1</span>:card<span class="Special"> &lt;- </span>merge <span class="Constant">3</span>
<span id="L199" class="LineNr">199 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>get <span class="Constant">1</span>:card <span class="Constant">rank:offset</span>
<span id="L200" class="LineNr">200 </span>]
<span id="L201" class="LineNr">201 </span><span class="Comment"># shouldn't die</span>
<span id="L202" class="LineNr">202 </span>
<span id="L203" class="LineNr">203 </span><span class="SalientComment">//:: To access elements of an array, use 'index'</span>
<span id="L204" class="LineNr">204 </span>
<span id="L205" class="LineNr">205 </span><span class="Delimiter">:(scenario index)</span>
<span id="L206" class="LineNr">206 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L207" class="LineNr">207 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L208" class="LineNr">208 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
<span id="L209" class="LineNr">209 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
<span id="L210" class="LineNr">210 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
<span id="L211" class="LineNr">211 </span>  <span class="Constant">10</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span>/index  <span class="Comment"># the index must be a non-negative whole number</span>
<span id="L212" class="LineNr">212 </span>]
<span id="L213" class="LineNr">213 </span><span class="traceContains">+mem: storing 14 in location 10</span>
<span id="L214" class="LineNr">214 </span>
<span id="L215" class="LineNr">215 </span><span class="Delimiter">:(scenario index_compound_element)</span>
<span id="L216" class="LineNr">216 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L217" class="LineNr">217 </span>  <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span><a href='043space.cc.html#L101'>address</a> number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)}</span><span class="Special"> &lt;- </span>create-array
<span id="L218" class="LineNr">218 </span>  <span class="Comment"># skip alloc id</span>
<span id="L219" class="LineNr">219 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
<span id="L220" class="LineNr">220 </span>  <span class="Comment"># skip alloc id</span>
<span id="L221" class="LineNr">221 </span>  <span class="Constant">5</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
<span id="L222" class="LineNr">222 </span>  <span class="Comment"># skip alloc id</span>
<span id="L223" class="LineNr">223 </span>  <span class="Constant">7</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
<span id="L224" class="LineNr">224 </span>  <span class="Constant">10</span>:<a href='043space.cc.html#L101'>address</a>:num<span class="Special"> &lt;- </span>index <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span><a href='043space.cc.html#L101'>address</a> number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)},</span> <span class="Constant">0</span>
<span id="L225" class="LineNr">225 </span>]
<span id="L226" class="LineNr">226 </span><span class="Comment"># skip alloc id</span>
<span id="L227" class="LineNr">227 </span><span class="traceContains">+mem: storing 14 in location 11</span>
<span id="L228" class="LineNr">228 </span>
<span id="L229" class="LineNr">229 </span><span class="Delimiter">:(scenario index_direct_offset)</span>
<span id="L230" class="LineNr">230 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L231" class="LineNr">231 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L232" class="LineNr">232 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
<span id="L233" class="LineNr">233 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
<span id="L234" class="LineNr">234 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
<span id="L235" class="LineNr">235 </span>  <span class="Constant">10</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
<span id="L236" class="LineNr">236 </span>  <span class="Constant">20</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:num<span class="Delimiter">,</span> <span class="Constant">10</span>:num
<span id="L237" class="LineNr">237 </span>]
<span id="L238" class="LineNr">238 </span><span class="traceContains">+mem: storing 14 in location 20</span>
<span id="L239" class="LineNr">239 </span>
<span id="L240" class="LineNr">240 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
<span id="L241" class="LineNr">241 </span>INDEX<span class="Delimiter">,</span>
<span id="L242" class="LineNr">242 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
<span id="L243" class="LineNr">243 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;index&quot;</span><span class="Delimiter">,</span> INDEX<span class="Delimiter">);</span>
<span id="L244" class="LineNr">244 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
<span id="L245" class="LineNr">245 </span><span class="Normal">case</span> INDEX: <span class="Delimiter">{</span>
<span id="L246" class="LineNr">246 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L247" class="LineNr">247 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;'index' expects exactly 2 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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L248" class="LineNr">248 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L249" class="LineNr">249 </span>  <span class="Delimiter">}</span>
<span id="L250" class="LineNr">250 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = 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 id="L251" class="LineNr">251 </span>  <span class="Comment">// Update INDEX base in Check</span>
<span id="L252" class="LineNr">252 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_array<span class="Delimiter">(</span>base<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L253" class="LineNr">253 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;'index' on a non-array '&quot;</span> &lt;&lt; base<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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L254" class="LineNr">254 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L255" class="LineNr">255 </span>  <span class="Delimiter">}</span>
<span id="L256" class="LineNr">256 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L257" class="LineNr">257 </span>  <span class="Comment">// Update INDEX index in Check</span>
<span id="L258" class="LineNr">258 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>index<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L259" class="LineNr">259 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;second ingredient of 'index' should be a number, but got '&quot;</span> &lt;&lt; index<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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L260" class="LineNr">260 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L261" class="LineNr">261 </span>  <span class="Delimiter">}</span>
<span id="L262" class="LineNr">262 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L263" class="LineNr">263 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L264" class="LineNr">264 </span>  <span class="Comment">// Update INDEX product in Check</span>
<span id="L265" class="LineNr">265 </span>  reagent<span class="Comment">/*</span><span class="Comment">local</span><span class="Comment">*/</span> element<span class="Delimiter">(</span><a href='032array.cc.html#L299'>copy_array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
<span id="L266" class="LineNr">266 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>product<span class="Delimiter">,</span> element<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L267" class="LineNr">267 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;'index' on '&quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' can't be saved in '&quot;</span> &lt;&lt; product<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'; type should be '&quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<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 id="L268" class="LineNr">268 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L269" class="LineNr">269 </span>  <span class="Delimiter">}</span>
<span id="L270" class="LineNr">270 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L271" class="LineNr">271 </span><span class="Delimiter">}</span>
<span id="L272" class="LineNr">272 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
<span id="L273" class="LineNr">273 </span><span class="Normal">case</span> INDEX: <span class="Delimiter">{</span>
<span id="L274" class="LineNr">274 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = <a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L275" class="LineNr">275 </span>  <span class="Comment">// Update INDEX base in Run</span>
<span id="L276" class="LineNr">276 </span>  <span class="Normal">int</span> base_address = base<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
<span id="L277" class="LineNr">277 </span>  <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;base <a href='043space.cc.html#L101'>address</a> is &quot;</span> &lt;&lt; base_address &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L278" class="LineNr">278 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>base_address == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L279" class="LineNr">279 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;tried to access location 0 in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L280" class="LineNr">280 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L281" class="LineNr">281 </span>  <span class="Delimiter">}</span>
<span id="L282" class="LineNr">282 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = <a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L283" class="LineNr">283 </span>  <span class="Comment">// Update INDEX index in Run</span>
<span id="L284" class="LineNr">284 </span>  vector&lt;<span class="Normal">double</span>&gt; index_val<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>index<span class="Delimiter">));</span>
<span id="L285" class="LineNr">285 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &lt; <span class="Constant">0</span> || index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &gt;= <a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L286" class="LineNr">286 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;invalid index &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L287" class="LineNr">287 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L288" class="LineNr">288 </span>  <span class="Delimiter">}</span>
<span id="L289" class="LineNr">289 </span>  reagent<span class="Comment">/*</span><span class="Comment">local</span><span class="Comment">*/</span> element<span class="Delimiter">(</span><a href='032array.cc.html#L299'>copy_array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
<span id="L290" class="LineNr">290 </span>  element<span class="Delimiter">.</span><a href='010vm.cc.html#L67'>set_value</a><span class="Delimiter">(</span>base_address + <span class="Comment">/*</span><span class="Comment">skip length</span><span class="Comment">*/</span><span class="Constant">1</span> + index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span>*size_of<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
<span id="L291" class="LineNr">291 </span>  <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;address to copy is &quot;</span> &lt;&lt; element<span class="Delimiter">.</span>value &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L292" class="LineNr">292 </span>  <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;its type is &quot;</span> &lt;&lt; <a href='028call_return.cc.html#L163'>to_string</a><span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L293" class="LineNr">293 </span>  <span class="Comment">// Read element</span>
<span id="L294" class="LineNr">294 </span>  products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>element<span class="Delimiter">));</span>
<span id="L295" class="LineNr">295 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L296" class="LineNr">296 </span><span class="Delimiter">}</span>
<span id="L297" class="LineNr">297 </span>
<span id="L298" class="LineNr">298 </span><span class="Delimiter">:(code)</span>
<span id="L299" class="LineNr">299 </span>type_tree* <a href='032array.cc.html#L299'>copy_array_element</a><span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L300" class="LineNr">300 </span>  <span class="Identifier">return</span> <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*array_element<span class="Delimiter">(</span>type<span class="Delimiter">));</span>
<span id="L301" class="LineNr">301 </span><span class="Delimiter">}</span>
<span id="L302" class="LineNr">302 </span>
<span id="L303" class="LineNr">303 </span>type_tree* <a href='032array.cc.html#L303'>array_element</a><span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L304" class="LineNr">304 </span>  assert<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">);</span>
<span id="L305" class="LineNr">305 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L306" class="LineNr">306 </span>    <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
<span id="L307" class="LineNr">307 </span>  <span class="Delimiter">}</span>
<span id="L308" class="LineNr">308 </span>  <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L309" class="LineNr">309 </span>    <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
<span id="L310" class="LineNr">310 </span>  <span class="Delimiter">}</span>
<span id="L311" class="LineNr">311 </span>  <span class="Comment">// hack: support array:num:3 without requiring extra parens</span>
<span id="L312" class="LineNr">312 </span>  <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left &amp;&amp; type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; is_integer<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L313" class="LineNr">313 </span>    assert<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="Delimiter">);</span>
<span id="L314" class="LineNr">314 </span>    <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">;</span>
<span id="L315" class="LineNr">315 </span>  <span class="Delimiter">}</span>
<span id="L316" class="LineNr">316 </span>  <span class="Identifier">return</span> type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">;</span>
<span id="L317" class="LineNr">317 </span><span class="Delimiter">}</span>
<span id="L318" class="LineNr">318 </span>
<span id="L319" class="LineNr">319 </span><span class="Normal">int</span> <a href='032array.cc.html#L319'>array_length</a><span class="Delimiter">(</span><span class="Normal">const</span> reagent&amp; x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L320" class="LineNr">320 </span>  <span class="Comment">// x should already be canonized.</span>
<span id="L321" class="LineNr">321 </span>  <span class="Comment">// hack: look for length in type</span>
<span id="L322" class="LineNr">322 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>atom &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>atom &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>atom &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="Comment">// exactly 3 types</span>
<span id="L323" class="LineNr">323 </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>left &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>left<span class="Delimiter">-&gt;</span>atom &amp;&amp; is_integer<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>  <span class="Comment">// third 'type' is a number</span>
<span id="L324" class="LineNr">324 </span>    <span class="Comment">// get size from type</span>
<span id="L325" class="LineNr">325 </span>    <span class="Identifier">return</span> to_integer<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>left<span class="Delimiter">-&gt;</span>name<span class="Delimiter">);</span>
<span id="L326" class="LineNr">326 </span>  <span class="Delimiter">}</span>
<span id="L327" class="LineNr">327 </span>  <span class="Comment">// this should never happen at transform time</span>
<span id="L328" class="LineNr">328 </span>  <span class="Identifier">return</span> <a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> x<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
<span id="L329" class="LineNr">329 </span><span class="Delimiter">}</span>
<span id="L330" class="LineNr">330 </span>
<span id="L331" class="LineNr">331 </span><span class="Delimiter">:(before &quot;End Unit Tests&quot;)</span>
<span id="L332" class="LineNr">332 </span><span class="Normal">void</span> <a href='032array.cc.html#L332'>test_array_length_compound</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L333" class="LineNr">333 </span>  <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">3</span><span class="Delimiter">);</span>
<span id="L334" class="LineNr">334 </span>  <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">14</span><span class="Delimiter">);</span>
<span id="L335" class="LineNr">335 </span>  <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">);</span>
<span id="L336" class="LineNr">336 </span>  <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">,</span> <span class="Constant">16</span><span class="Delimiter">);</span>
<span id="L337" class="LineNr">337 </span>  reagent x<span class="Delimiter">(</span><span class="Constant">&quot;1:array:<a href='043space.cc.html#L101'>address</a>:num&quot;</span><span class="Delimiter">);</span>  <span class="Comment">// 3 types, but not a static array</span>
<span id="L338" class="LineNr">338 </span>  <a href='012transform.cc.html#L91'>populate_value</a><span class="Delimiter">(</span>x<span class="Delimiter">);</span>
<span id="L339" class="LineNr">339 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='032array.cc.html#L319'>array_length</a><span class="Delimiter">(</span>x<span class="Delimiter">),</span> <span class="Constant">3</span><span class="Delimiter">);</span>
<span id="L340" class="LineNr">340 </span><span class="Delimiter">}</span>
<span id="L341" class="LineNr">341 </span>
<span id="L342" class="LineNr">342 </span><span class="Normal">void</span> <a href='032array.cc.html#L342'>test_array_length_static</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L343" class="LineNr">343 </span>  reagent x<span class="Delimiter">(</span><span class="Constant">&quot;1:array:num:3&quot;</span><span class="Delimiter">);</span>
<span id="L344" class="LineNr">344 </span>  <a href='002test.cc.html#L31'>CHECK_EQ</a><span class="Delimiter">(</span><a href='032array.cc.html#L319'>array_length</a><span class="Delimiter">(</span>x<span class="Delimiter">),</span> <span class="Constant">3</span><span class="Delimiter">);</span>
<span id="L345" class="LineNr">345 </span><span class="Delimiter">}</span>
<span id="L346" class="LineNr">346 </span>
<span id="L347" class="LineNr">347 </span><span class="Delimiter">:(scenario index_truncates)</span>
<span id="L348" class="LineNr">348 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L349" class="LineNr">349 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L350" class="LineNr">350 </span>  <span class="Constant">2</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
<span id="L351" class="LineNr">351 </span>  <span class="Constant">3</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
<span id="L352" class="LineNr">352 </span>  <span class="Constant">4</span>:num<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
<span id="L353" class="LineNr">353 </span>  <span class="Constant">10</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">1.5</span>  <span class="Comment"># non-whole number</span>
<span id="L354" class="LineNr">354 </span>]
<span id="L355" class="LineNr">355 </span><span class="Comment"># fraction is truncated away</span>
<span id="L356" class="LineNr">356 </span><span class="traceContains">+mem: storing 15 in location 10</span>
<span id="L357" class="LineNr">357 </span>
<span id="L358" class="LineNr">358 </span><span class="Delimiter">:(scenario index_out_of_bounds)</span>
<span id="L359" class="LineNr">359 </span><span class="Special">% Hide_errors = true;</span>
<span id="L360" class="LineNr">360 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L361" class="LineNr">361 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L362" class="LineNr">362 </span>  index <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">4</span>  <span class="Comment"># less than size of array in locations, but larger than its length in elements</span>
<span id="L363" class="LineNr">363 </span>]
<span id="L364" class="LineNr">364 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index 4 in 'index 1:array:point:3, 4'</span>
<span id="L365" class="LineNr">365 </span>
<span id="L366" class="LineNr">366 </span><span class="Delimiter">:(scenario index_out_of_bounds_2)</span>
<span id="L367" class="LineNr">367 </span><span class="Special">% Hide_errors = true;</span>
<span id="L368" class="LineNr">368 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L369" class="LineNr">369 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L370" class="LineNr">370 </span>  index <span class="Constant">1</span>:array:num<span class="Delimiter">,</span> -<span class="Constant">1</span>
<span id="L371" class="LineNr">371 </span>]
<span id="L372" class="LineNr">372 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index -1 in 'index 1:array:num, -1'</span>
<span id="L373" class="LineNr">373 </span>
<span id="L374" class="LineNr">374 </span><span class="Delimiter">:(scenario index_product_type_mismatch)</span>
<span id="L375" class="LineNr">375 </span><span class="Special">% Hide_errors = true;</span>
<span id="L376" class="LineNr">376 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L377" class="LineNr">377 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L378" class="LineNr">378 </span>  <span class="Constant">10</span>:num<span class="Special"> &lt;- </span>index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> <span class="Constant">0</span>
<span id="L379" class="LineNr">379 </span>]
<span id="L380" class="LineNr">380 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: 'index' on '1:array:point' can't be saved in '10:num'; type should be 'point'</span>
<span id="L381" class="LineNr">381 </span>
<span id="L382" class="LineNr">382 </span><span class="Comment">//: we might want to call 'index' without saving the results, say in a sandbox</span>
<span id="L383" class="LineNr">383 </span>
<span id="L384" class="LineNr">384 </span><span class="Delimiter">:(scenario index_without_product)</span>
<span id="L385" class="LineNr">385 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L386" class="LineNr">386 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L387" class="LineNr">387 </span>  index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span>
<span id="L388" class="LineNr">388 </span>]
<span id="L389" class="LineNr">389 </span><span class="Comment"># just don't die</span>
<span id="L390" class="LineNr">390 </span>
<span id="L391" class="LineNr">391 </span><span class="SalientComment">//:: To write to elements of arrays, use 'put'.</span>
<span id="L392" class="LineNr">392 </span>
<span id="L393" class="LineNr">393 </span><span class="Delimiter">:(scenario put_index)</span>
<span id="L394" class="LineNr">394 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L395" class="LineNr">395 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L396" class="LineNr">396 </span>  <span class="Constant">1</span>:array:num<span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:num<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L397" class="LineNr">397 </span>]
<span id="L398" class="LineNr">398 </span><span class="traceContains">+mem: storing 34 in location 3</span>
<span id="L399" class="LineNr">399 </span>
<span id="L400" class="LineNr">400 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
<span id="L401" class="LineNr">401 </span>PUT_INDEX<span class="Delimiter">,</span>
<span id="L402" class="LineNr">402 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
<span id="L403" class="LineNr">403 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;put-index&quot;</span><span class="Delimiter">,</span> PUT_INDEX<span class="Delimiter">);</span>
<span id="L404" class="LineNr">404 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
<span id="L405" class="LineNr">405 </span><span class="Normal">case</span> PUT_INDEX: <span class="Delimiter">{</span>
<span id="L406" class="LineNr">406 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">3</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L407" class="LineNr">407 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;'put-index' expects exactly 3 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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L408" class="LineNr">408 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L409" class="LineNr">409 </span>  <span class="Delimiter">}</span>
<span id="L410" class="LineNr">410 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = 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 id="L411" class="LineNr">411 </span>  <span class="Comment">// Update PUT_INDEX base in Check</span>
<span id="L412" class="LineNr">412 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_array<span class="Delimiter">(</span>base<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L413" class="LineNr">413 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;'put-index' on a non-array '&quot;</span> &lt;&lt; base<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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L414" class="LineNr">414 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L415" class="LineNr">415 </span>  <span class="Delimiter">}</span>
<span id="L416" class="LineNr">416 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L417" class="LineNr">417 </span>  <span class="Comment">// Update PUT_INDEX index in Check</span>
<span id="L418" class="LineNr">418 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>index<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L419" class="LineNr">419 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;second ingredient of 'put-index' should have type 'number', but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L420" class="LineNr">420 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L421" class="LineNr">421 </span>  <span class="Delimiter">}</span>
<span id="L422" class="LineNr">422 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> value = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span>
<span id="L423" class="LineNr">423 </span>  <span class="Comment">// Update PUT_INDEX value in Check</span>
<span id="L424" class="LineNr">424 </span>  reagent<span class="Comment">/*</span><span class="Comment">local</span><span class="Comment">*/</span> element<span class="Delimiter">(</span><a href='032array.cc.html#L299'>copy_array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
<span id="L425" class="LineNr">425 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>element<span class="Delimiter">,</span> value<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L426" class="LineNr">426 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;'put-index &quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;' should store &quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; but '&quot;</span> &lt;&lt; value<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' has type &quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>value<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L427" class="LineNr">427 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L428" class="LineNr">428 </span>  <span class="Delimiter">}</span>
<span id="L429" class="LineNr">429 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// no more checks necessary</span>
<span id="L430" class="LineNr">430 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name != inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L431" class="LineNr">431 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;product of 'put-index' must be first ingredient '&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;', but got '&quot;</span> &lt;&lt; inst<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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L432" class="LineNr">432 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L433" class="LineNr">433 </span>  <span class="Delimiter">}</span>
<span id="L434" class="LineNr">434 </span>  <span class="Comment">// End PUT_INDEX Product Checks</span>
<span id="L435" class="LineNr">435 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L436" class="LineNr">436 </span><span class="Delimiter">}</span>
<span id="L437" class="LineNr">437 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
<span id="L438" class="LineNr">438 </span><span class="Normal">case</span> PUT_INDEX: <span class="Delimiter">{</span>
<span id="L439" class="LineNr">439 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = <a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L440" class="LineNr">440 </span>  <span class="Comment">// Update PUT_INDEX base in Run</span>
<span id="L441" class="LineNr">441 </span>  <span class="Normal">int</span> base_address = base<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
<span id="L442" class="LineNr">442 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>base_address == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L443" class="LineNr">443 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;tried to access location 0 in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L444" class="LineNr">444 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L445" class="LineNr">445 </span>  <span class="Delimiter">}</span>
<span id="L446" class="LineNr">446 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = <a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L447" class="LineNr">447 </span>  <span class="Comment">// Update PUT_INDEX index in Run</span>
<span id="L448" class="LineNr">448 </span>  vector&lt;<span class="Normal">double</span>&gt; index_val<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>index<span class="Delimiter">));</span>
<span id="L449" class="LineNr">449 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &lt; <span class="Constant">0</span> || index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> &gt;= <a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L450" class="LineNr">450 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;invalid index &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L451" class="LineNr">451 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L452" class="LineNr">452 </span>  <span class="Delimiter">}</span>
<span id="L453" class="LineNr">453 </span>  <span class="Normal">int</span> <a href='043space.cc.html#L101'>address</a> = base_address + <span class="Comment">/*</span><span class="Comment">skip length</span><span class="Comment">*/</span><span class="Constant">1</span> + index_val<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span>*size_of<span class="Delimiter">(</span><a href='032array.cc.html#L303'>array_element</a><span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">));</span>
<span id="L454" class="LineNr">454 </span>  <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;address to copy to is &quot;</span> &lt;&lt; <a href='043space.cc.html#L101'>address</a> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L455" class="LineNr">455 </span>  <span class="Comment">// optimization: directly write the element rather than updating 'product'</span>
<span id="L456" class="LineNr">456 </span>  <span class="Comment">// and writing the entire array</span>
<span id="L457" class="LineNr">457 </span>  write_products =<span class="Constant"> false</span><span class="Delimiter">;</span>
<span id="L458" class="LineNr">458 </span>  vector&lt;<span class="Normal">double</span>&gt; value = read_memory<span class="Delimiter">(</span><a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">));</span>
<span id="L459" class="LineNr">459 </span>  <span class="Comment">// Write Memory in PUT_INDEX in Run</span>
<span id="L460" class="LineNr">460 </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; <a href='001help.cc.html#L141'>SIZE</a><span class="Delimiter">(</span>value<span class="Delimiter">);</span>  ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L461" class="LineNr">461 </span>    <a href='003trace.cc.html#L189'>trace</a><span class="Delimiter">(</span><span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>value<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; address+i &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L462" class="LineNr">462 </span>    <a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> address+i<span class="Delimiter">,</span> value<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span id="L463" class="LineNr">463 </span>  <span class="Delimiter">}</span>
<span id="L464" class="LineNr">464 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L465" class="LineNr">465 </span><span class="Delimiter">}</span>
<span id="L466" class="LineNr">466 </span>
<span id="L467" class="LineNr">467 </span><span class="Delimiter">:(scenario put_index_out_of_bounds)</span>
<span id="L468" class="LineNr">468 </span><span class="Special">% Hide_errors = true;</span>
<span id="L469" class="LineNr">469 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L470" class="LineNr">470 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L471" class="LineNr">471 </span>  <span class="Constant">8</span>:point<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
<span id="L472" class="LineNr">472 </span>  <span class="Constant">1</span>:array:point<span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> <span class="Constant">4</span><span class="Delimiter">,</span> <span class="Constant">8</span>:point  <span class="Comment"># '4' is less than size of array in locations, but larger than its length in elements</span>
<span id="L473" class="LineNr">473 </span>]
<span id="L474" class="LineNr">474 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index 4 in '1:array:point &lt;- put-index 1:array:point, 4, 8:point'</span>
<span id="L475" class="LineNr">475 </span>
<span id="L476" class="LineNr">476 </span><span class="Delimiter">:(scenario put_index_out_of_bounds_2)</span>
<span id="L477" class="LineNr">477 </span><span class="Special">% Hide_errors = true;</span>
<span id="L478" class="LineNr">478 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L479" class="LineNr">479 </span>  <span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L480" class="LineNr">480 </span>  <span class="Constant">10</span>:point<span class="Special"> &lt;- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
<span id="L481" class="LineNr">481 </span>  <span class="Constant">1</span>:array:point<span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> -<span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">10</span>:point
<span id="L482" class="LineNr">482 </span>]
<span id="L483" class="LineNr">483 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: invalid index -1 in '1:array:point &lt;- put-index 1:array:point, -1, 10:point'</span>
<span id="L484" class="LineNr">484 </span>
<span id="L485" class="LineNr">485 </span><span class="Delimiter">:(scenario put_index_product_error)</span>
<span id="L486" class="LineNr">486 </span><span class="Special">% Hide_errors = true;</span>
<span id="L487" class="LineNr">487 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L488" class="LineNr">488 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L489" class="LineNr">489 </span>  <span class="Constant">4</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">34</span>
<span id="L490" class="LineNr">490 </span>]
<span id="L491" class="LineNr">491 </span><span class="traceContains">+error: <a href='000organization.cc.html#L113'>main</a>: product of 'put-index' must be first ingredient '1:array:num:3', but got '4:array:num:3'</span>
<span id="L492" class="LineNr">492 </span>
<span id="L493" class="LineNr">493 </span><span class="SalientComment">//:: compute the length of an array</span>
<span id="L494" class="LineNr">494 </span>
<span id="L495" class="LineNr">495 </span><span class="Delimiter">:(scenario array_length)</span>
<span id="L496" class="LineNr">496 </span><span class="muRecipe">def</span> <a href='000organization.cc.html#L113'>main</a> [
<span id="L497" class="LineNr">497 </span>  <span class="Constant">1</span>:array:num:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
<span id="L498" class="LineNr">498 </span>  <span class="Constant">10</span>:num<span class="Special"> &lt;- </span>length <span class="Constant">1</span>:array:num
<span id="L499" class="LineNr">499 </span>]
<span id="L500" class="LineNr">500 </span><span class="traceContains">+mem: storing 3 in location 10</span>
<span id="L501" class="LineNr">501 </span>
<span id="L502" class="LineNr">502 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
<span id="L503" class="LineNr">503 </span>LENGTH<span class="Delimiter">,</span>
<span id="L504" class="LineNr">504 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
<span id="L505" class="LineNr">505 </span><a href='001help.cc.html#L221'>put</a><span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;length&quot;</span><span class="Delimiter">,</span> LENGTH<span class="Delimiter">);</span>
<span id="L506" class="LineNr">506 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
<span id="L507" class="LineNr">507 </span><span class="Normal">case</span> LENGTH: <span class="Delimiter">{</span>
<span id="L508" class="LineNr">508 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L141'>SIZE</a><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>
<span id="L509" class="LineNr">509 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><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;'length' expects exactly 2 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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L510" class="LineNr">510 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L511" class="LineNr">511 </span>  <span class="Delimiter">}</span>
<span id="L512" class="LineNr">512 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> array = 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 id="L513" class="LineNr">513 </span>  <span class="Comment">// Update LENGTH array in Check</span>
<span id="L514" class="LineNr">514 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_array<span class="Delimiter">(</span>array<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L515" class="LineNr">515 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <span class="Constant">&quot;tried to calculate length of non-array '&quot;</span> &lt;&lt; array<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; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L516" class="LineNr">516 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L517" class="LineNr">517 </span>  <span class="Delimiter">}</span>
<span id="L518" class="LineNr">518 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L519" class="LineNr">519 </span><span class="Delimiter">}</span>
<span id="L520" class="LineNr">520 </span><span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
<span id="L521" class="LineNr">521 </span><span class="Normal">case</span> LENGTH: <span class="Delimiter">{</span>
<span id="L522" class="LineNr">522 </span>  reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> array = <a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L523" class="LineNr">523 </span>  <span class="Comment">// Update LENGTH array in Run</span>
<span id="L524" class="LineNr">524 </span>  <span class="Normal">if</span> <span class="Delimiter">(</span>array<span class="Delimiter">.</span>value == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L525" class="LineNr">525 </span>    <a href='003trace.cc.html#L196'>raise</a> &lt;&lt; <a href='013update_operation.cc.html#L25'>maybe</a><span class="Delimiter">(</span><a href='026call.cc.html#L87'>current_recipe_name</a><span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;tried to access location 0 in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; <a href='003trace.cc.html#L225'>end</a><span class="Delimiter">();</span>
<span id="L526" class="LineNr">526 </span>    <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L527" class="LineNr">527 </span>  <span class="Delimiter">}</span>
<span id="L528" class="LineNr">528 </span>  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span id="L529" class="LineNr">529 </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><a href='001help.cc.html#L229'>get_or_insert</a><span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> array<span class="Delimiter">.</span>value<span class="Delimiter">));</span>
<span id="L530" class="LineNr">530 </span>  <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L531" class="LineNr">531 </span><span class="Delimiter">}</span>
<span id="L532" class="LineNr">532 </span>
<span id="L533" class="LineNr">533 </span><span class="Comment">//: optimization: none of the instructions in this layer use 'ingredients' so</span>
<span id="L534" class="LineNr">534 </span><span class="Comment">//: stop copying potentially huge arrays into it.</span>
<span id="L535" class="LineNr">535 </span><span class="Delimiter">:(before &quot;End should_copy_ingredients Special-cases&quot;)</span>
<span id="L536" class="LineNr">536 </span><a href='010vm.cc.html#L14'>recipe_ordinal</a> r = <a href='026call.cc.html#L89'>current_instruction</a><span class="Delimiter">().</span>operation<span class="Delimiter">;</span>
<span id="L537" class="LineNr">537 </span><span class="Normal">if</span> <span class="Delimiter">(</span>r == CREATE_ARRAY || r == INDEX || r == PUT_INDEX || r == LENGTH<span class="Delimiter">)</span>
<span id="L538" class="LineNr">538 </span>  <span class="Identifier">return</span><span class="Constant"> false</span><span class="Delimiter">;</span>
</pre>
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