1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
|
<!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 - 042name.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; }
.traceAbsent { color: #c00000; }
.cSpecial { color: #008000; }
.traceContains { color: #008000; }
.SalientComment { color: #00ffff; }
.Comment { color: #9090ff; }
.Delimiter { color: #800080; }
.Special { color: #c00000; }
.CommentedCode { color: #6c6c6c; }
.Normal { color: #eeeeee; background-color: #080808; padding-bottom: 1px; }
.Identifier { color: #fcb165; }
-->
</style>
<script type='text/javascript'>
<!--
-->
</script>
</head>
<body>
<pre id='vimCodeElement'>
<span class="Comment">//: A big convenience high-level languages provide is the ability to name memory</span>
<span class="Comment">//: locations. In mu, a transform called 'transform_names' provides this</span>
<span class="Comment">//: convenience.</span>
<span class="Delimiter">:(scenario transform_names)</span>
def main [
<span class="Normal">x</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<span class="traceContains">+name: assign x 1</span>
<span class="traceContains">+mem: storing 0 in location 1</span>
<span class="Delimiter">:(scenarios transform)</span>
<span class="Delimiter">:(scenario transform_names_fails_on_use_before_define)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
<span class="Normal">x</span>:number<span class="Special"> <- </span>copy y:number
]
<span class="traceContains">+error: main: use before set: 'y'</span>
<span class="Comment"># todo: detect conditional defines</span>
<span class="Delimiter">:(after "Transform.push_back(compute_container_sizes)")</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>transform_names<span class="Delimiter">);</span> <span class="Comment">// idempotent</span>
<span class="Delimiter">:(before "End Globals")</span>
map<recipe_ordinal<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">int</span>> > Name<span class="Delimiter">;</span>
<span class="Comment">//: the Name map is a global, so save it before tests and reset it for every</span>
<span class="Comment">//: test, just to be safe.</span>
<span class="Delimiter">:(before "End Globals")</span>
map<recipe_ordinal<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">int</span>> > Name_snapshot<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End save_snapshots")</span>
Name_snapshot = Name<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End restore_snapshots")</span>
Name = Name_snapshot<span class="Delimiter">;</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">void</span> transform_names<span class="Delimiter">(</span><span class="Normal">const</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">"--- transform names for recipe "</span> << caller<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
<span class="CommentedCode">//? cerr << "--- transform names for recipe " << caller.name << '\n';</span>
<span class="Normal">bool</span> names_used = <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">bool</span> numeric_locations_used = <span class="Constant">false</span><span class="Delimiter">;</span>
map<string<span class="Delimiter">,</span> <span class="Normal">int</span>>& names = Name[r]<span class="Delimiter">;</span>
<span class="Comment">// store the indices 'used' so far in the map</span>
<span class="Normal">int</span>& curr_idx = names[<span class="Constant">""</span>]<span class="Delimiter">;</span>
++curr_idx<span class="Delimiter">;</span> <span class="Comment">// avoid using index 0, benign skip in some other cases</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="Comment">// End transform_names(inst) Special-cases</span>
<span class="Comment">// map names to addresses</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> in = <span class="Constant">0</span><span class="Delimiter">;</span> in < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_disqualified<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">),</span> inst<span class="Delimiter">,</span> caller<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_numeric_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">)))</span> numeric_locations_used = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_named_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">)))</span> names_used = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_integer<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">).</span>name<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!already_transformed<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">),</span> names<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"use before set: '"</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<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="Delimiter">}</span>
<span class="Normal">int</span> v = lookup_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">),</span> r<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>v >= <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">).</span>set_value<span class="Delimiter">(</span>v<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"can't find a place to store '"</span> << inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<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">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> out = <span class="Constant">0</span><span class="Delimiter">;</span> out < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_disqualified<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">),</span> inst<span class="Delimiter">,</span> caller<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_numeric_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">)))</span> numeric_locations_used = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_named_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">)))</span> names_used = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_integer<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">).</span>name<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>names<span class="Delimiter">.</span>find<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">).</span>name<span class="Delimiter">)</span> == names<span class="Delimiter">.</span>end<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">"name"</span><span class="Delimiter">)</span> << <span class="Constant">"assign "</span> << inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">).</span>name << <span class="Constant">" "</span> << curr_idx << end<span class="Delimiter">();</span>
names[inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">).</span>name] = curr_idx<span class="Delimiter">;</span>
curr_idx += size_of<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> v = lookup_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">),</span> r<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>v >= <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">).</span>set_value<span class="Delimiter">(</span>v<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"can't find a place to store '"</span> << inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<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">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>names_used && numeric_locations_used<span class="Delimiter">)</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"mixing variable names and numeric addresses</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> is_disqualified<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">mutable</span><span class="Comment">*/</span> reagent& x<span class="Delimiter">,</span> <span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> <span class="Normal">const</span> string& recipe_name<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> <span class="Delimiter">{</span>
<span class="Comment">// End Null-type is_disqualified Exceptions</span>
raise << maybe<span class="Delimiter">(</span>recipe_name<span class="Delimiter">)</span> << <span class="Constant">"missing type for '"</span> << x<span class="Delimiter">.</span>original_string << <span class="Constant">"' in '"</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">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_raw<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Comment">// End is_disqualified Cases</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>initialized<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</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="Normal">bool</span> already_transformed<span class="Delimiter">(</span><span class="Normal">const</span> reagent& r<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">int</span>>& names<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> contains_key<span class="Delimiter">(</span>names<span class="Delimiter">,</span> r<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> lookup_name<span class="Delimiter">(</span><span class="Normal">const</span> reagent& r<span class="Delimiter">,</span> <span class="Normal">const</span> recipe_ordinal default_recipe<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> Name[default_recipe][r<span class="Delimiter">.</span>name]<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
type_ordinal skip_addresses<span class="Delimiter">(</span>type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
type_ordinal address = get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">"address"</span><span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(;</span> type<span class="Delimiter">;</span> type = type<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-></span>value != address<span class="Delimiter">)</span>
<span class="Identifier">return</span> type<span class="Delimiter">-></span>value<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Identifier">return</span> -<span class="Constant">1</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> find_element_name<span class="Delimiter">(</span><span class="Normal">const</span> type_ordinal t<span class="Delimiter">,</span> <span class="Normal">const</span> string& name<span class="Delimiter">,</span> <span class="Normal">const</span> string& recipe_name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> type_info& container = get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> t<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>container<span class="Delimiter">.</span>elements<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>container<span class="Delimiter">.</span>elements<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name == name<span class="Delimiter">)</span> <span class="Identifier">return</span> i<span class="Delimiter">;</span>
raise << maybe<span class="Delimiter">(</span>recipe_name<span class="Delimiter">)</span> << <span class="Constant">"unknown element '"</span> << name << <span class="Constant">"' in container '"</span> << get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> t<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">return</span> -<span class="Constant">1</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> is_numeric_location<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>is_literal<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="Normal">if</span> <span class="Delimiter">(</span>is_raw<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="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>name == <span class="Constant">"0"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span> <span class="Comment">// used for chaining lexical scopes</span>
<span class="Identifier">return</span> is_integer<span class="Delimiter">(</span>x<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> is_named_location<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>is_literal<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="Normal">if</span> <span class="Delimiter">(</span>is_raw<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="Normal">if</span> <span class="Delimiter">(</span>is_special_name<span class="Delimiter">(</span>x<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Identifier">return</span> !is_integer<span class="Delimiter">(</span>x<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> is_special_name<span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>s == <span class="Constant">"_"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>s == <span class="Constant">"0"</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Comment">// End is_special_name Cases</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario transform_names_supports_containers)</span>
def main [
<span class="Normal">x</span>:point<span class="Special"> <- </span>merge <span class="Constant">34</span><span class="Delimiter">,</span> <span class="Constant">35</span>
<span class="Normal">y</span>:number<span class="Special"> <- </span>copy <span class="Constant">3</span>
]
<span class="traceContains">+name: assign x 1</span>
<span class="Comment"># skip location 2 because x occupies two locations</span>
<span class="traceContains">+name: assign y 3</span>
<span class="Delimiter">:(scenario transform_names_supports_static_arrays)</span>
def main [
<span class="Normal">x</span>:array:number:<span class="Constant">3</span><span class="Special"> <- </span>create-array
<span class="Normal">y</span>:number<span class="Special"> <- </span>copy <span class="Constant">3</span>
]
<span class="traceContains">+name: assign x 1</span>
<span class="Comment"># skip locations 2, 3, 4 because x occupies four locations</span>
<span class="traceContains">+name: assign y 5</span>
<span class="Delimiter">:(scenario transform_names_passes_dummy)</span>
<span class="Comment"># _ is just a dummy result that never gets consumed</span>
def main [
_<span class="Delimiter">,</span> x:number<span class="Special"> <- </span>copy <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">1</span>
]
<span class="traceContains">+name: assign x 1</span>
<span class="traceAbsent">-name: assign _ 1</span>
<span class="Comment">//: an escape hatch to suppress name conversion that we'll use later</span>
<span class="Delimiter">:(scenarios run)</span>
<span class="Delimiter">:(scenario transform_names_passes_raw)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
<span class="Normal">x</span>:number/<span class="Special">raw <- </span>copy <span class="Constant">0</span>
]
<span class="traceAbsent">-name: assign x 1</span>
<span class="traceContains">+error: can't write to location 0 in 'x:number/raw <- copy 0'</span>
<span class="Delimiter">:(scenarios transform)</span>
<span class="Delimiter">:(scenario transform_names_fails_when_mixing_names_and_numeric_locations)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
<span class="Normal">x</span>:number<span class="Special"> <- </span>copy <span class="Constant">1</span>:number
]
<span class="traceContains">+error: main: mixing variable names and numeric addresses</span>
<span class="Delimiter">:(scenario transform_names_fails_when_mixing_names_and_numeric_locations_2)</span>
<span class="Special">% Hide_errors = true;</span>
def main [
<span class="Normal">x</span>:number<span class="Special"> <- </span>copy <span class="Constant">1</span>
<span class="Constant">1</span>:number<span class="Special"> <- </span>copy x:number
]
<span class="traceContains">+error: main: mixing variable names and numeric addresses</span>
<span class="Delimiter">:(scenario transform_names_does_not_fail_when_mixing_names_and_raw_locations)</span>
def main [
<span class="Normal">x</span>:number<span class="Special"> <- </span>copy <span class="Constant">1</span>:number/<span class="Special">raw</span>
]
<span class="traceAbsent">-error: main: mixing variable names and numeric addresses</span>
$error: <span class="Constant">0</span>
<span class="Delimiter">:(scenario transform_names_does_not_fail_when_mixing_names_and_literals)</span>
def main [
<span class="Normal">x</span>:number<span class="Special"> <- </span>copy <span class="Constant">1</span>
]
<span class="traceAbsent">-error: main: mixing variable names and numeric addresses</span>
$error: <span class="Constant">0</span>
<span class="SalientComment">//:: Support element names for containers in 'get' and 'get-location' and 'put'.</span>
<span class="Comment">//: (get-location is implemented later)</span>
<span class="Delimiter">:(scenario transform_names_transforms_container_elements)</span>
def main [
<span class="Normal">p</span>:address:point<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Normal">a</span>:number<span class="Special"> <- </span>get *p:address:point<span class="Delimiter">,</span> y:offset
<span class="Normal">b</span>:number<span class="Special"> <- </span>get *p:address:point<span class="Delimiter">,</span> x:offset
]
<span class="traceContains">+name: element y of type point is at offset 1</span>
<span class="traceContains">+name: element x of type point is at offset 0</span>
<span class="Delimiter">:(before "End transform_names(inst) Special-cases")</span>
<span class="Comment">// replace element names of containers with offsets</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">"get"</span> || inst<span class="Delimiter">.</span>name == <span class="Constant">"get-location"</span> || inst<span class="Delimiter">.</span>name == <span class="Constant">"put"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">//: avoid raising any errors here; later layers will support overloading new</span>
<span class="Comment">//: instructions with the same names (static dispatch), which could lead to</span>
<span class="Comment">//: spurious errors</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="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// error raised elsewhere</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span>
<span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// error raised elsewhere</span>
<span class="Normal">if</span> <span class="Delimiter">(</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>name<span class="Delimiter">.</span>find_first_not_of<span class="Delimiter">(</span><span class="Constant">"0123456789"</span><span class="Delimiter">)</span> != string::npos<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// since first non-address in base type must be a container, we don't have to canonize</span>
type_ordinal base_type = skip_addresses<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>type<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>base_type == -<span class="Constant">1</span><span class="Delimiter">)</span>
<span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// error raised elsewhere</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base_type<span class="Delimiter">))</span> <span class="Delimiter">{</span> <span class="Comment">// otherwise we'll raise an error elsewhere</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>set_value<span class="Delimiter">(</span>find_element_name<span class="Delimiter">(</span>base_type<span class="Delimiter">,</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>name<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">));</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"name"</span><span class="Delimiter">)</span> << <span class="Constant">"element "</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>name << <span class="Constant">" of type "</span> << get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base_type<span class="Delimiter">).</span>name << <span class="Constant">" is at offset "</span> << no_scientific<span class="Delimiter">(</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>value<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Comment">//: this test is actually illegal so can't call run</span>
<span class="Delimiter">:(scenarios transform)</span>
<span class="Delimiter">:(scenario transform_names_handles_containers)</span>
def main [
<span class="Normal">a</span>:point<span class="Special"> <- </span>copy <span class="Constant">0</span>/unsafe
<span class="Normal">b</span>:number<span class="Special"> <- </span>copy <span class="Constant">0</span>/unsafe
]
<span class="traceContains">+name: assign a 1</span>
<span class="traceContains">+name: assign b 3</span>
<span class="SalientComment">//:: Support variant names for exclusive containers in 'maybe-convert'.</span>
<span class="Delimiter">:(scenarios run)</span>
<span class="Delimiter">:(scenario transform_names_handles_exclusive_containers)</span>
def main [
<span class="Constant">12</span>:number<span class="Special"> <- </span>copy <span class="Constant">1</span>
<span class="Constant">13</span>:number<span class="Special"> <- </span>copy <span class="Constant">35</span>
<span class="Constant">14</span>:number<span class="Special"> <- </span>copy <span class="Constant">36</span>
<span class="Constant">20</span>:point<span class="Delimiter">,</span> <span class="Constant">22</span>:boolean<span class="Special"> <- </span>maybe-convert <span class="Constant">12</span>:number-<span class="Normal">or</span>-point/unsafe<span class="Delimiter">,</span> p:variant
]
<span class="traceContains">+name: variant p of type number-or-point has tag 1</span>
<span class="traceContains">+mem: storing 1 in location 22</span>
<span class="traceContains">+mem: storing 35 in location 20</span>
<span class="traceContains">+mem: storing 36 in location 21</span>
<span class="Delimiter">:(before "End transform_names(inst) Special-cases")</span>
<span class="Comment">// convert variant names of exclusive containers</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">"maybe-convert"</span><span class="Delimiter">)</span> <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">"exactly 2 ingredients expected in '"</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>
assert<span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)));</span>
<span class="Normal">if</span> <span class="Delimiter">(</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>name<span class="Delimiter">.</span>find_first_not_of<span class="Delimiter">(</span><span class="Constant">"0123456789"</span><span class="Delimiter">)</span> != string::npos<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// since first non-address in base type must be an exclusive container, we don't have to canonize</span>
type_ordinal base_type = skip_addresses<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>type<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>base_type == -<span class="Constant">1</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">"expected an exclusive-container in '"</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="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base_type<span class="Delimiter">))</span> <span class="Delimiter">{</span> <span class="Comment">// otherwise we'll raise an error elsewhere</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>set_value<span class="Delimiter">(</span>find_element_name<span class="Delimiter">(</span>base_type<span class="Delimiter">,</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>name<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">));</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"name"</span><span class="Delimiter">)</span> << <span class="Constant">"variant "</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>name << <span class="Constant">" of type "</span> << get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base_type<span class="Delimiter">).</span>name << <span class="Constant">" has tag "</span> << no_scientific<span class="Delimiter">(</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>value<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|