blob: 689d8a1bde8eabecb8b778e4d0cd384143131697 (
plain) (
tree)
|
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Mu - 071rewrite_stash.cc</title>
<meta name="Generator" content="Vim/7.4">
<meta name="plugin-version" content="vim7.4_v2">
<meta name="syntax" content="cpp">
<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy=">
<meta name="colorscheme" content="minimal">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; }
body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; }
* { font-size: 12pt; font-size: 1em; }
.Constant { color: #00a0a0; }
.cSpecial { color: #008000; }
.traceContains { color: #008000; }
.Comment { color: #9090ff; }
.Delimiter { color: #800080; }
.Special { color: #c00000; }
.Identifier { color: #fcb165; }
.Normal { color: #eeeeee; background-color: #080808; padding-bottom: 1px; }
-->
</style>
<script type='text/javascript'>
<!--
-->
</script>
</head>
<body>
<pre id='vimCodeElement'>
<span class="Comment">//: when encountering other types, try to convert them to strings using</span>
<span class="Comment">//: 'to-text'</span>
<span class="Delimiter">:(scenarios transform)</span>
<span class="Delimiter">:(scenario rewrite_stashes_to_text)</span>
recipe main [
local-scope
<span class="Normal">n</span>:number<span class="Special"> <- </span>copy <span class="Constant">34</span>
stash n
]
<span class="traceContains">+transform: {stash_2_0: ("address" "shared" "array" "character")} <- to-text-line {n: "number"}</span>
<span class="traceContains">+transform: stash {stash_2_0: ("address" "shared" "array" "character")}</span>
<span class="Comment">//: special case: rewrite attempts to stash contents of most arrays to avoid</span>
<span class="Comment">//: passing addresses around</span>
<span class="Delimiter">:(scenario rewrite_stashes_of_arrays)</span>
recipe main [
local-scope
<span class="Normal">n</span>:address:shared:array:number<span class="Special"> <- </span><span class="Normal">new</span> number:type<span class="Delimiter">,</span> <span class="Constant">3</span>
stash *n
]
<span class="traceContains">+transform: {stash_2_0: ("address" "shared" "array" "character")} <- array-to-text-line {n: ("address" "shared" "array" "number")}</span>
<span class="traceContains">+transform: stash {stash_2_0: ("address" "shared" "array" "character")}</span>
<span class="Delimiter">:(before "End Instruction Inserting/Deleting Transforms")</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>rewrite_stashes_to_text<span class="Delimiter">);</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">void</span> rewrite_stashes_to_text<span class="Delimiter">(</span>recipe_ordinal r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
recipe& caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"--- rewrite 'stash' instructions in recipe "</span> << caller<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
<span class="Comment">// in recipes without named locations, 'stash' is still not extensible</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_numeric_locations<span class="Delimiter">(</span>caller<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
check_or_set_types_by_name<span class="Delimiter">(</span>r<span class="Delimiter">);</span> <span class="Comment">// prerequisite</span>
rewrite_stashes_to_text<span class="Delimiter">(</span>caller<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> rewrite_stashes_to_text<span class="Delimiter">(</span>recipe& caller<span class="Delimiter">)</span> <span class="Delimiter">{</span>
vector<instruction> new_instructions<span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
instruction& inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">"stash"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>type<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
instruction def<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_address_of_array<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
def<span class="Delimiter">.</span>name = <span class="Constant">"array-to-text-line"</span><span class="Delimiter">;</span>
reagent tmp = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span>
drop_one_lookup<span class="Delimiter">(</span>tmp<span class="Delimiter">);</span>
def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>tmp<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
def<span class="Delimiter">.</span>name = <span class="Constant">"to-text-line"</span><span class="Delimiter">;</span>
def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
ostringstream ingredient_name<span class="Delimiter">;</span>
ingredient_name << <span class="Constant">"stash_"</span> << i << <span class="Constant">'_'</span> << j << <span class="Constant">":address:shared:array:character"</span><span class="Delimiter">;</span>
def<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span>ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">()));</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << to_string<span class="Delimiter">(</span>def<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
new_instructions<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>def<span class="Delimiter">);</span>
inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>clear<span class="Delimiter">();</span> <span class="Comment">// reclaim old memory</span>
inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)</span> = reagent<span class="Delimiter">(</span>ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
new_instructions<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>swap<span class="Delimiter">(</span>new_instructions<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> is_address_of_array<span class="Delimiter">(</span>reagent x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!canonize_type<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Identifier">return</span> x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"array"</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">//: Make sure that the new system is strictly better than just the 'stash'</span>
<span class="Comment">//: primitive by itself.</span>
<span class="Delimiter">:(scenarios run)</span>
<span class="Delimiter">:(scenario rewrite_stash_continues_to_fall_back_to_default_implementation)</span>
<span class="Comment"># type without a to-text implementation</span>
container foo [
<span class="Normal">x</span>:number
<span class="Normal">y</span>:number
]
recipe main [
local-scope
<span class="Normal">x</span>:foo<span class="Special"> <- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
stash x
]
<span class="traceContains">+app: 34 35</span>
<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
TO_TEXT<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">"to-text"</span><span class="Delimiter">,</span> TO_TEXT<span class="Delimiter">);</span>
<span class="Delimiter">:(before "End Primitive Recipe Checks")</span>
<span class="Normal">case</span> TO_TEXT: <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">"'to-text' requires a single ingredient, but got '"</span> << to_original_string<span class="Delimiter">(</span>inst<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> TO_TEXT: <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>new_mu_string<span class="Delimiter">(</span>print_mu<span class="Delimiter">(</span>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> ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))));</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|