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<span class="Comment">//: Arrays contain a variable number of elements of the same type. Their value</span>
<span class="Comment">//: starts with the length of the array.</span>
<span class="Comment">//:</span>
<span class="Comment">//: You can create arrays of containers, but containers can only contain</span>
<span class="Comment">//: elements of a fixed size, so you can't create containers containing arrays.</span>
<span class="Comment">//: Create containers containing addresses to arrays instead.</span>
<span class="Comment">//: You can create arrays using 'create-array'.</span>
<span class="Delimiter">:(scenario create_array)</span>
def main [
<span class="Comment"># create an array occupying locations 1 (for the size) and 2-4 (for the elements)</span>
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
]
<span class="traceContains">+run: creating array of size 4</span>
<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
CREATE_ARRAY<span class="Delimiter">,</span>
<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"create-array"</span><span class="Delimiter">,</span> CREATE_ARRAY<span class="Delimiter">);</span>
<span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span class="Normal">case</span> CREATE_ARRAY: <span class="Delimiter">{</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>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'create-array' needs one product and no ingredients but got '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</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 class="Comment">// Update CREATE_ARRAY product in Check</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>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'create-array' cannot create non-array '"</span> << product<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!product<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"create array of what? '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">// 'create-array' will need to check properties rather than types</span>
type_tree* array_length_from_type = product<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!array_length_from_type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"create array of what size? '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!product<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>atom<span class="Delimiter">)</span>
array_length_from_type = array_length_from_type<span class="Delimiter">-></span>left<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!is_integer<span class="Delimiter">(</span>array_length_from_type<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'create-array' product should specify size of array after its element type, but got '"</span> << product<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>name << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span class="Normal">case</span> CREATE_ARRAY: <span class="Delimiter">{</span>
reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = current_instruction<span class="Delimiter">().</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span class="Comment">// Update CREATE_ARRAY product in Run</span>
<span class="Normal">int</span> base_address = product<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
type_tree* array_length_from_type = product<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!product<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>atom<span class="Delimiter">)</span>
array_length_from_type = array_length_from_type<span class="Delimiter">-></span>left<span class="Delimiter">;</span>
<span class="Normal">int</span> array_length = to_integer<span class="Delimiter">(</span>array_length_from_type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
<span class="Comment">// initialize array length, so that size_of will work</span>
trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">"mem"</span><span class="Delimiter">)</span> << <span class="Constant">"storing "</span> << array_length << <span class="Constant">" in location "</span> << base_address << end<span class="Delimiter">();</span>
put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">,</span> array_length<span class="Delimiter">);</span> <span class="Comment">// in array elements</span>
<span class="Normal">int</span> size = size_of<span class="Delimiter">(</span>product<span class="Delimiter">);</span> <span class="Comment">// in locations</span>
trace<span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"creating array of size "</span> << size << end<span class="Delimiter">();</span>
<span class="Comment">// initialize array</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 <= size_of<span class="Delimiter">(</span>product<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
put<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 class="Delimiter">}</span>
<span class="Comment">// no need to update product</span>
<span class="Identifier">goto</span> finish_instruction<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario copy_array)</span>
<span class="Comment"># Arrays can be copied around with a single instruction just like numbers,</span>
<span class="Comment"># no matter how large they are.</span>
<span class="Comment"># You don't need to pass the size around, since each array variable stores its</span>
<span class="Comment"># size in memory at run-time. We'll call a variable with an explicit size a</span>
<span class="Comment"># 'static' array, and one without a 'dynamic' array since it can contain</span>
<span class="Comment"># arrays of many different sizes.</span>
def main [
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">5</span>:array:number<span class="Special"> <- </span>copy <span class="Constant">1</span>:array:number:<span class="Constant">3</span>
]
<span class="traceContains">+mem: storing 3 in location 5</span>
<span class="traceContains">+mem: storing 14 in location 6</span>
<span class="traceContains">+mem: storing 15 in location 7</span>
<span class="traceContains">+mem: storing 16 in location 8</span>
<span class="Delimiter">:(scenario stash_array)</span>
def main [
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
stash [foo:]<span class="Delimiter">,</span> <span class="Constant">1</span>:array:number:<span class="Constant">3</span>
]
<span class="traceContains">+app: foo: 3 14 15 16</span>
<span class="Delimiter">:(before "End size_of(reagent r) Cases")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>atom && r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>left<span class="Delimiter">-></span>atom && r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>left<span class="Delimiter">-></span>value == get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"array"</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> << <span class="Constant">"'"</span> << r<span class="Delimiter">.</span>original_string << <span class="Constant">"' is an array of what?</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">1</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
type_tree* element_type = copy_array_element<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span class="Normal">int</span> result = <span class="Constant">1</span> + array_length<span class="Delimiter">(</span>r<span class="Delimiter">)</span>*size_of<span class="Delimiter">(</span>element_type<span class="Delimiter">);</span>
<span class="Normal">delete</span> element_type<span class="Delimiter">;</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">//: disable the size mismatch check for arrays since the destination array</span>
<span class="Comment">//: need not be initialized</span>
<span class="Delimiter">:(before "End size_mismatch(x) Cases")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>type && !x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>atom && x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>left<span class="Delimiter">-></span>value == get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"array"</span><span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Comment">//: arrays are disallowed inside containers unless their length is fixed in</span>
<span class="Comment">//: advance</span>
<span class="Delimiter">:(scenario container_permits_static_array_element)</span>
container foo [
<span class="Normal">x</span>:array:number:<span class="Constant">3</span>
]
$error: <span class="Constant">0</span>
<span class="Delimiter">:(scenario container_disallows_dynamic_array_element)</span>
<span class="Special">% Hide_errors = true;</span>
container foo [
<span class="Normal">x</span>:array:number
]
<span class="traceContains">+error: container 'foo' cannot determine size of element 'x'</span>
<span class="Comment">//: disable the size mismatch check for 'merge' instructions since containers</span>
<span class="Comment">//: can contain arrays, and since we already do plenty of checking for them</span>
<span class="Delimiter">:(before "End size_mismatch(x) Cases")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>current_call<span class="Delimiter">().</span>running_step_index < SIZE<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> current_call<span class="Delimiter">().</span>running_recipe<span class="Delimiter">).</span>steps<span class="Delimiter">)</span>
&& current_instruction<span class="Delimiter">().</span>operation == MERGE<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario merge_static_array_into_container)</span>
container foo [
<span class="Normal">x</span>:number
<span class="Normal">y</span>:array:number:<span class="Constant">3</span>
]
def main [
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">10</span>:foo<span class="Special"> <- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">1</span>:array:number:<span class="Constant">3</span>
]
<span class="Comment"># no errors</span>
<span class="Delimiter">:(before "End Load Container Element Definition")</span>
<span class="Delimiter">{</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 class="Normal">if</span> <span class="Delimiter">(</span>type && type<span class="Delimiter">-></span>atom && type<span class="Delimiter">-></span>name == <span class="Constant">"array"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"container '"</span> << name << <span class="Constant">"' doesn't specify type of array elements for '"</span> << info<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>back<span class="Delimiter">().</span>name << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>type && !type<span class="Delimiter">-></span>atom && type<span class="Delimiter">-></span>left<span class="Delimiter">-></span>atom && type<span class="Delimiter">-></span>left<span class="Delimiter">-></span>name == <span class="Constant">"array"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"container '"</span> << name << <span class="Constant">"' doesn't specify type of array elements for '"</span> << info<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>back<span class="Delimiter">().</span>name << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span> <span class="Comment">// array has no length</span>
raise << <span class="Constant">"container '"</span> << name << <span class="Constant">"' cannot determine size of element '"</span> << info<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>back<span class="Delimiter">().</span>name << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario code_inside_container)</span>
<span class="Special">% Hide_errors = true;</span>
container card [
<span class="Normal">rank</span>:number<span class="Special"> <- </span>next-ingredient
]
recipe foo [
<span class="Constant">1</span>:card<span class="Special"> <- </span>merge <span class="Constant">3</span>
<span class="Constant">2</span>:number<span class="Special"> <- </span>get <span class="Constant">1</span>:card rank:offset
]
<span class="Comment"># shouldn't die</span>
<span class="SalientComment">//:: To access elements of an array, use 'index'</span>
<span class="Delimiter">:(scenario index)</span>
def main [
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>index <span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span>
]
<span class="traceContains">+mem: storing 14 in location 5</span>
<span class="Delimiter">:(scenario index_compound_element)</span>
def main [
<span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span>address number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)}</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">5</span>:address:number<span class="Special"> <- </span>index <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span>address number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)},</span> <span class="Constant">0</span>
]
<span class="traceContains">+mem: storing 14 in location 5</span>
<span class="Delimiter">:(scenario index_direct_offset)</span>
def main [
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Constant">6</span>:number<span class="Special"> <- </span>index <span class="Constant">1</span>:array:number<span class="Delimiter">,</span> <span class="Constant">5</span>:number
]
<span class="traceContains">+mem: storing 14 in location 6</span>
<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
INDEX<span class="Delimiter">,</span>
<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"index"</span><span class="Delimiter">,</span> INDEX<span class="Delimiter">);</span>
<span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span class="Normal">case</span> INDEX: <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'index' expects exactly 2 ingredients in '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
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 class="Comment">// Update INDEX base in Check</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>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'index' on a non-array '"</span> << base<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
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 class="Comment">// Update INDEX index in Check</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>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"second ingredient of 'index' should be a number, but got '"</span> << index<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="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>
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 class="Comment">// Update INDEX product in Check</span>
reagent element<span class="Delimiter">;</span>
element<span class="Delimiter">.</span>type = copy_array_element<span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">);</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>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'index' on '"</span> << base<span class="Delimiter">.</span>original_string << <span class="Constant">"' can't be saved in '"</span> << product<span class="Delimiter">.</span>original_string << <span class="Constant">"'; type should be '"</span> << names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span class="Normal">case</span> INDEX: <span class="Delimiter">{</span>
reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span class="Comment">// Update INDEX base in Run</span>
<span class="Normal">int</span> base_address = base<span class="Delimiter">.</span>value<span class="Delimiter">;</span>
trace<span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"base address is "</span> << base_address << end<span class="Delimiter">();</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>
raise << maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> << <span class="Constant">"tried to access location 0 in '"</span> << to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span class="Comment">// Update INDEX index in Run</span>
vector<<span class="Normal">double</span>> index_val<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>index<span class="Delimiter">));</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> < <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> >= get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> << <span class="Constant">"invalid index "</span> << 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> << <span class="Constant">" in '"</span> << to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
type_tree* element_type = copy_array_element<span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span class="Normal">int</span> src = base_address + <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_type<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"address to copy is "</span> << src << end<span class="Delimiter">();</span>
trace<span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"its type is "</span> << to_string<span class="Delimiter">(</span>element_type<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
reagent element<span class="Delimiter">;</span>
element<span class="Delimiter">.</span>set_value<span class="Delimiter">(</span>src<span class="Delimiter">);</span>
element<span class="Delimiter">.</span>type = element_type<span class="Delimiter">;</span>
<span class="Comment">// Read element</span>
products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>element<span class="Delimiter">));</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(code)</span>
type_tree* copy_array_element<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">);</span>
<span class="Comment">// hack: don't require parens for either array:number:3 array:address:number</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>atom && type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right && type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>atom && is_integer<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>name<span class="Delimiter">))</span>
<span class="Identifier">return</span> <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>left<span class="Delimiter">);</span>
<span class="Identifier">return</span> <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*type<span class="Delimiter">-></span>right<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> array_length<span class="Delimiter">(</span><span class="Normal">const</span> reagent& x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>atom && !x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>atom && x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>atom <span class="Comment">// exactly 3 types</span>
&& is_integer<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span> <span class="Comment">// third 'type' is a number</span>
<span class="Comment">// get size from type</span>
<span class="Identifier">return</span> to_integer<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">-></span>right<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Comment">// this should never happen at transform time</span>
<span class="Comment">// x should already be canonized.</span>
<span class="Identifier">return</span> get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> x<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> test_array_length_compound<span class="Delimiter">()</span> <span class="Delimiter">{</span>
put<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>
put<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>
put<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>
put<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>
reagent x<span class="Delimiter">(</span><span class="Constant">"1:array:address:number"</span><span class="Delimiter">);</span> <span class="Comment">// 3 types, but not a static array</span>
populate_value<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
CHECK_EQ<span class="Delimiter">(</span>array_length<span class="Delimiter">(</span>x<span class="Delimiter">),</span> <span class="Constant">3</span><span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario index_out_of_bounds)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">7</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
index <span class="Constant">1</span>:array:number:<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 class="traceContains">+error: main: invalid index 4 in 'index 1:array:number:3, 4'</span>
<span class="Delimiter">:(scenario index_out_of_bounds_2)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
<span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">7</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> -<span class="Constant">1</span>
]
<span class="traceContains">+error: main: invalid index -1 in 'index 1:array:point, -1'</span>
<span class="Delimiter">:(scenario index_product_type_mismatch)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
<span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">7</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">9</span>:number<span class="Special"> <- </span>index <span class="Constant">1</span>:array:point<span class="Delimiter">,</span> <span class="Constant">0</span>
]
<span class="traceContains">+error: main: 'index' on '1:array:point' can't be saved in '9:number'; type should be 'point'</span>
<span class="Comment">//: we might want to call 'index' without saving the results, say in a sandbox</span>
<span class="Delimiter">:(scenario index_without_product)</span>
def main [
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
index <span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span>
]
<span class="Comment"># just don't die</span>
<span class="SalientComment">//:: To write to elements of arrays, use 'put'.</span>
<span class="Delimiter">:(scenario put_index)</span>
def main [
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">1</span>:array:number<span class="Special"> <- </span>put-index <span class="Constant">1</span>:array:number<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">34</span>
]
<span class="traceContains">+mem: storing 34 in location 3</span>
<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
PUT_INDEX<span class="Delimiter">,</span>
<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"put-index"</span><span class="Delimiter">,</span> PUT_INDEX<span class="Delimiter">);</span>
<span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span class="Normal">case</span> PUT_INDEX: <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">3</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'put-index' expects exactly 3 ingredients in '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
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 class="Comment">// Update PUT_INDEX base in Check</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>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'put-index' on a non-array '"</span> << base<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
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 class="Comment">// Update PUT_INDEX index in Check</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>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"second ingredient of 'put-index' should have type 'number', but got '"</span> << 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 << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
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 class="Comment">// Update PUT_INDEX value in Check</span>
reagent element<span class="Delimiter">;</span>
element<span class="Delimiter">.</span>type = copy_array_element<span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">);</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>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'put-index "</span> << base<span class="Delimiter">.</span>original_string << <span class="Constant">", "</span> << 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 << <span class="Constant">"' should store "</span> << names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> << <span class="Constant">" but '"</span> << value<span class="Delimiter">.</span>name << <span class="Constant">"' has type "</span> << names_to_string_without_quotes<span class="Delimiter">(</span>value<span class="Delimiter">.</span>type<span class="Delimiter">)</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>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 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>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"product of 'put-index' must be first ingredient '"</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string << <span class="Constant">"', but got '"</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>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">// End PUT_INDEX Product Checks</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span class="Normal">case</span> PUT_INDEX: <span class="Delimiter">{</span>
reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span class="Comment">// Update PUT_INDEX base in Run</span>
<span class="Normal">int</span> base_address = base<span class="Delimiter">.</span>value<span class="Delimiter">;</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>
raise << maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> << <span class="Constant">"tried to access location 0 in '"</span> << to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> index = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
<span class="Comment">// Update PUT_INDEX index in Run</span>
vector<<span class="Normal">double</span>> index_val<span class="Delimiter">(</span>read_memory<span class="Delimiter">(</span>index<span class="Delimiter">));</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> < <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> >= get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> << <span class="Constant">"invalid index "</span> << 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> << <span class="Constant">" in '"</span> << to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
reagent element<span class="Delimiter">;</span>
element<span class="Delimiter">.</span>type = copy_array_element<span class="Delimiter">(</span>base<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span class="Normal">int</span> address = base_address + <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>
element<span class="Delimiter">.</span>set_value<span class="Delimiter">(</span>address<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">"run"</span><span class="Delimiter">)</span> << <span class="Constant">"address to copy to is "</span> << address << end<span class="Delimiter">();</span>
<span class="Comment">// optimization: directly write the element rather than updating 'product'</span>
<span class="Comment">// and writing the entire array</span>
vector<<span class="Normal">double</span>> value = read_memory<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">));</span>
<span class="Comment">// Write Memory in PUT_INDEX in Run</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>value<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">"mem"</span><span class="Delimiter">)</span> << <span class="Constant">"storing "</span> << no_scientific<span class="Delimiter">(</span>value<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> << <span class="Constant">" in location "</span> << address+i << end<span class="Delimiter">();</span>
put<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 class="Delimiter">}</span>
<span class="Identifier">goto</span> finish_instruction<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario put_index_out_of_bounds)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
<span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">7</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">8</span>:point<span class="Special"> <- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
<span class="Constant">1</span>:array:point<span class="Special"> <- </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 class="traceContains">+error: main: invalid index 4 in '1:array:point <- put-index 1:array:point, 4, 8:point'</span>
<span class="Delimiter">:(scenario put_index_out_of_bounds_2)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
<span class="Constant">1</span>:array:point:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">7</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">8</span>:point<span class="Special"> <- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
<span class="Constant">1</span>:array:point<span class="Special"> <- </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">8</span>:point
]
<span class="traceContains">+error: main: invalid index -1 in '1:array:point <- put-index 1:array:point, -1, 8:point'</span>
<span class="Delimiter">:(scenario put_index_product_error)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
local-scope
load-ingredients
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">4</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>put-index <span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">34</span>
]
<span class="traceContains">+error: main: product of 'put-index' must be first ingredient '1:array:number:3', but got '4:array:number:3'</span>
<span class="SalientComment">//:: compute the length of an array</span>
<span class="Delimiter">:(scenario array_length)</span>
def main [
<span class="Constant">1</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Constant">2</span>:number<span class="Special"> <- </span>copy <span class="Constant">14</span>
<span class="Constant">3</span>:number<span class="Special"> <- </span>copy <span class="Constant">15</span>
<span class="Constant">4</span>:number<span class="Special"> <- </span>copy <span class="Constant">16</span>
<span class="Constant">5</span>:number<span class="Special"> <- </span>length <span class="Constant">1</span>:array:number:<span class="Constant">3</span>
]
<span class="traceContains">+mem: storing 3 in location 5</span>
<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
LENGTH<span class="Delimiter">,</span>
<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">"length"</span><span class="Delimiter">,</span> LENGTH<span class="Delimiter">);</span>
<span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span class="Normal">case</span> LENGTH: <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> << <span class="Constant">"'length' expects exactly 2 ingredients in '"</span> << inst<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
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 class="Comment">// Update LENGTH array in Check</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>
raise << <span class="Constant">"tried to calculate length of non-array '"</span> << array<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
<span class="Normal">case</span> LENGTH: <span class="Delimiter">{</span>
reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> array = current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span class="Comment">// Update LENGTH array in Run</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>
raise << maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> << <span class="Constant">"tried to access location 0 in '"</span> << to_original_string<span class="Delimiter">(</span>current_instruction<span class="Delimiter">())</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> array<span class="Delimiter">.</span>value<span class="Delimiter">));</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">//: optimization: none of the instructions in this layer use 'ingredients' so</span>
<span class="Comment">//: stop copying potentially huge arrays into it.</span>
<span class="Delimiter">:(before "End should_copy_ingredients Special-cases")</span>
recipe_ordinal r = current_instruction<span class="Delimiter">().</span>operation<span class="Delimiter">;</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 class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
</pre>
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