forked from argotorg/fe
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathlib.rs.html
More file actions
468 lines (439 loc) · 33.5 KB
/
Copy pathlib.rs.html
File metadata and controls
468 lines (439 loc) · 33.5 KB
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
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `semantics/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs - source</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../favicon.svg">
<link rel="alternate icon" type="image/png" href="../../favicon-16x16.png">
<link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../fe_semantics/index.html'><div class='logo-container rust-logo'><img src='../../rust-logo.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><span class="help-button">?</span>
<a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
<span id="2"> 2</span>
<span id="3"> 3</span>
<span id="4"> 4</span>
<span id="5"> 5</span>
<span id="6"> 6</span>
<span id="7"> 7</span>
<span id="8"> 8</span>
<span id="9"> 9</span>
<span id="10"> 10</span>
<span id="11"> 11</span>
<span id="12"> 12</span>
<span id="13"> 13</span>
<span id="14"> 14</span>
<span id="15"> 15</span>
<span id="16"> 16</span>
<span id="17"> 17</span>
<span id="18"> 18</span>
<span id="19"> 19</span>
<span id="20"> 20</span>
<span id="21"> 21</span>
<span id="22"> 22</span>
<span id="23"> 23</span>
<span id="24"> 24</span>
<span id="25"> 25</span>
<span id="26"> 26</span>
<span id="27"> 27</span>
<span id="28"> 28</span>
<span id="29"> 29</span>
<span id="30"> 30</span>
<span id="31"> 31</span>
<span id="32"> 32</span>
<span id="33"> 33</span>
<span id="34"> 34</span>
<span id="35"> 35</span>
<span id="36"> 36</span>
<span id="37"> 37</span>
<span id="38"> 38</span>
<span id="39"> 39</span>
<span id="40"> 40</span>
<span id="41"> 41</span>
<span id="42"> 42</span>
<span id="43"> 43</span>
<span id="44"> 44</span>
<span id="45"> 45</span>
<span id="46"> 46</span>
<span id="47"> 47</span>
<span id="48"> 48</span>
<span id="49"> 49</span>
<span id="50"> 50</span>
<span id="51"> 51</span>
<span id="52"> 52</span>
<span id="53"> 53</span>
<span id="54"> 54</span>
<span id="55"> 55</span>
<span id="56"> 56</span>
<span id="57"> 57</span>
<span id="58"> 58</span>
<span id="59"> 59</span>
<span id="60"> 60</span>
<span id="61"> 61</span>
<span id="62"> 62</span>
<span id="63"> 63</span>
<span id="64"> 64</span>
<span id="65"> 65</span>
<span id="66"> 66</span>
<span id="67"> 67</span>
<span id="68"> 68</span>
<span id="69"> 69</span>
<span id="70"> 70</span>
<span id="71"> 71</span>
<span id="72"> 72</span>
<span id="73"> 73</span>
<span id="74"> 74</span>
<span id="75"> 75</span>
<span id="76"> 76</span>
<span id="77"> 77</span>
<span id="78"> 78</span>
<span id="79"> 79</span>
<span id="80"> 80</span>
<span id="81"> 81</span>
<span id="82"> 82</span>
<span id="83"> 83</span>
<span id="84"> 84</span>
<span id="85"> 85</span>
<span id="86"> 86</span>
<span id="87"> 87</span>
<span id="88"> 88</span>
<span id="89"> 89</span>
<span id="90"> 90</span>
<span id="91"> 91</span>
<span id="92"> 92</span>
<span id="93"> 93</span>
<span id="94"> 94</span>
<span id="95"> 95</span>
<span id="96"> 96</span>
<span id="97"> 97</span>
<span id="98"> 98</span>
<span id="99"> 99</span>
<span id="100">100</span>
<span id="101">101</span>
<span id="102">102</span>
<span id="103">103</span>
<span id="104">104</span>
<span id="105">105</span>
<span id="106">106</span>
<span id="107">107</span>
<span id="108">108</span>
<span id="109">109</span>
<span id="110">110</span>
<span id="111">111</span>
<span id="112">112</span>
<span id="113">113</span>
<span id="114">114</span>
<span id="115">115</span>
<span id="116">116</span>
<span id="117">117</span>
<span id="118">118</span>
<span id="119">119</span>
<span id="120">120</span>
<span id="121">121</span>
<span id="122">122</span>
<span id="123">123</span>
<span id="124">124</span>
<span id="125">125</span>
<span id="126">126</span>
<span id="127">127</span>
<span id="128">128</span>
<span id="129">129</span>
<span id="130">130</span>
<span id="131">131</span>
<span id="132">132</span>
<span id="133">133</span>
<span id="134">134</span>
<span id="135">135</span>
<span id="136">136</span>
<span id="137">137</span>
<span id="138">138</span>
<span id="139">139</span>
<span id="140">140</span>
<span id="141">141</span>
<span id="142">142</span>
<span id="143">143</span>
<span id="144">144</span>
<span id="145">145</span>
<span id="146">146</span>
<span id="147">147</span>
<span id="148">148</span>
<span id="149">149</span>
<span id="150">150</span>
<span id="151">151</span>
<span id="152">152</span>
<span id="153">153</span>
<span id="154">154</span>
<span id="155">155</span>
<span id="156">156</span>
<span id="157">157</span>
<span id="158">158</span>
<span id="159">159</span>
<span id="160">160</span>
<span id="161">161</span>
<span id="162">162</span>
<span id="163">163</span>
<span id="164">164</span>
<span id="165">165</span>
<span id="166">166</span>
<span id="167">167</span>
<span id="168">168</span>
<span id="169">169</span>
<span id="170">170</span>
<span id="171">171</span>
<span id="172">172</span>
<span id="173">173</span>
<span id="174">174</span>
<span id="175">175</span>
<span id="176">176</span>
<span id="177">177</span>
<span id="178">178</span>
<span id="179">179</span>
<span id="180">180</span>
<span id="181">181</span>
<span id="182">182</span>
<span id="183">183</span>
<span id="184">184</span>
<span id="185">185</span>
<span id="186">186</span>
<span id="187">187</span>
<span id="188">188</span>
<span id="189">189</span>
<span id="190">190</span>
<span id="191">191</span>
<span id="192">192</span>
<span id="193">193</span>
<span id="194">194</span>
<span id="195">195</span>
<span id="196">196</span>
<span id="197">197</span>
<span id="198">198</span>
<span id="199">199</span>
<span id="200">200</span>
<span id="201">201</span>
<span id="202">202</span>
<span id="203">203</span>
<span id="204">204</span>
<span id="205">205</span>
<span id="206">206</span>
<span id="207">207</span>
<span id="208">208</span>
<span id="209">209</span>
<span id="210">210</span>
<span id="211">211</span>
<span id="212">212</span>
<span id="213">213</span>
<span id="214">214</span>
<span id="215">215</span>
<span id="216">216</span>
<span id="217">217</span>
<span id="218">218</span>
<span id="219">219</span>
<span id="220">220</span>
<span id="221">221</span>
<span id="222">222</span>
<span id="223">223</span>
<span id="224">224</span>
<span id="225">225</span>
<span id="226">226</span>
<span id="227">227</span>
<span id="228">228</span>
<span id="229">229</span>
<span id="230">230</span>
<span id="231">231</span>
</pre><div class="example-wrap"><pre class="rust ">
<span class="doccomment">//! Fe semantic analysis.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! This library is used to analyze the semantics of a given Fe AST. It detects</span>
<span class="doccomment">//! any semantic errors within a given AST and produces a `Context` instance</span>
<span class="doccomment">//! that can be used to query contextual information attributed to AST nodes.</span>
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">errors</span>;
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">namespace</span>;
<span class="kw">mod</span> <span class="ident">traversal</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">errors</span>::<span class="ident">SemanticError</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">namespace</span>::<span class="ident">events</span>::<span class="ident">Event</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">namespace</span>::<span class="ident">scopes</span>::<span class="ident">Shared</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">namespace</span>::<span class="ident">types</span>::{
<span class="ident">FixedSize</span>,
<span class="ident">Type</span>,
};
<span class="kw">use</span> <span class="ident">fe_parser</span>::<span class="ident">ast</span> <span class="kw">as</span> <span class="ident">fe</span>;
<span class="kw">use</span> <span class="ident">fe_parser</span>::<span class="ident">span</span>::{
<span class="ident">Span</span>,
<span class="ident">Spanned</span>,
};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">cell</span>::<span class="ident">RefCell</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">HashMap</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>;
<span class="doccomment">/// Indicates where an expression is stored.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">Location</span> {
<span class="ident">Storage</span> { <span class="ident">index</span>: <span class="ident">usize</span> },
<span class="ident">Memory</span>,
<span class="ident">Value</span>,
}
<span class="doccomment">/// Operations that need to be made available during runtime.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">RuntimeOperations</span> {
<span class="doccomment">/// Encode a set of fixed sized values.</span>
<span class="ident">AbiEncode</span> { <span class="ident">params</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">FixedSize</span><span class="op">></span> },
}
<span class="doccomment">/// Contains contextual information relating to a contract AST node.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ContractAttributes</span> {
<span class="doccomment">/// Operations that need to be added to the runtime.</span>
<span class="kw">pub</span> <span class="ident">runtime_operations</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">RuntimeOperations</span><span class="op">></span>,
<span class="doccomment">/// Public functions that have been defined by the user.</span>
<span class="kw">pub</span> <span class="ident">public_functions</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">FunctionAttributes</span><span class="op">></span>,
}
<span class="doccomment">/// Contains contextual information relating to an expression AST node.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ExpressionAttributes</span> {
<span class="kw">pub</span> <span class="ident">typ</span>: <span class="ident">Type</span>,
<span class="kw">pub</span> <span class="ident">location</span>: <span class="ident">Location</span>,
}
<span class="kw">impl</span> <span class="ident">ExpressionAttributes</span> {
<span class="doccomment">/// Convenience method for matching type and location.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">to_tuple</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> (<span class="ident">Type</span>, <span class="ident">Location</span>) {
(<span class="self">self</span>.<span class="ident">typ</span>.<span class="ident">clone</span>(), <span class="self">self</span>.<span class="ident">location</span>.<span class="ident">clone</span>())
}
}
<span class="doccomment">/// Contains contextual information relating to a function definition AST node.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">FunctionAttributes</span> {
<span class="kw">pub</span> <span class="ident">name</span>: <span class="ident">String</span>,
<span class="kw">pub</span> <span class="ident">param_types</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">FixedSize</span><span class="op">></span>,
<span class="kw">pub</span> <span class="ident">return_type</span>: <span class="ident">FixedSize</span>,
}
<span class="doccomment">/// Contains contextual information about a Fe module and can be queried using</span>
<span class="doccomment">/// `Spanned` AST nodes.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Debug</span>, <span class="ident">Default</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Context</span> {
<span class="ident">expressions</span>: <span class="ident">HashMap</span><span class="op"><</span><span class="ident">Span</span>, <span class="ident">ExpressionAttributes</span><span class="op">></span>,
<span class="ident">emits</span>: <span class="ident">HashMap</span><span class="op"><</span><span class="ident">Span</span>, <span class="ident">Event</span><span class="op">></span>,
<span class="ident">functions</span>: <span class="ident">HashMap</span><span class="op"><</span><span class="ident">Span</span>, <span class="ident">FunctionAttributes</span><span class="op">></span>,
<span class="ident">declarations</span>: <span class="ident">HashMap</span><span class="op"><</span><span class="ident">Span</span>, <span class="ident">FixedSize</span><span class="op">></span>,
<span class="ident">contracts</span>: <span class="ident">HashMap</span><span class="op"><</span><span class="ident">Span</span>, <span class="ident">ContractAttributes</span><span class="op">></span>,
}
<span class="kw">impl</span> <span class="ident">Context</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new_shared</span>() <span class="op">-</span><span class="op">></span> <span class="ident">Shared</span><span class="op"><</span><span class="self">Self</span><span class="op">></span> {
<span class="ident">Rc</span>::<span class="ident">new</span>(<span class="ident">RefCell</span>::<span class="ident">new</span>(<span class="self">Self</span>::<span class="ident">new</span>()))
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-</span><span class="op">></span> <span class="self">Self</span> {
<span class="ident">Context</span> {
<span class="ident">expressions</span>: <span class="ident">HashMap</span>::<span class="ident">new</span>(),
<span class="ident">emits</span>: <span class="ident">HashMap</span>::<span class="ident">new</span>(),
<span class="ident">functions</span>: <span class="ident">HashMap</span>::<span class="ident">new</span>(),
<span class="ident">declarations</span>: <span class="ident">HashMap</span>::<span class="ident">new</span>(),
<span class="ident">contracts</span>: <span class="ident">HashMap</span>::<span class="ident">new</span>(),
}
}
<span class="doccomment">/// Attribute contextual information to an expression node.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_expression</span>(
<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>,
<span class="ident">spanned</span>: <span class="kw-2">&</span><span class="ident">Spanned</span><span class="op"><</span><span class="ident">fe</span>::<span class="ident">Expr</span><span class="op">></span>,
<span class="ident">attributes</span>: <span class="ident">ExpressionAttributes</span>,
) {
<span class="self">self</span>.<span class="ident">expressions</span>.<span class="ident">insert</span>(<span class="ident">spanned</span>.<span class="ident">span</span>, <span class="ident">attributes</span>);
}
<span class="doccomment">/// Get information that has been attributed to an expression node.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_expression</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Span</span><span class="op">></span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">span</span>: <span class="ident">T</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">ExpressionAttributes</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">expressions</span>.<span class="ident">get</span>(<span class="kw-2">&</span><span class="ident">span</span>.<span class="ident">into</span>())
}
<span class="doccomment">/// Attribute contextual information to an emit statement node.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_emit</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">spanned</span>: <span class="kw-2">&</span><span class="ident">Spanned</span><span class="op"><</span><span class="ident">fe</span>::<span class="ident">FuncStmt</span><span class="op">></span>, <span class="ident">event</span>: <span class="ident">Event</span>) {
<span class="self">self</span>.<span class="ident">emits</span>.<span class="ident">insert</span>(<span class="ident">spanned</span>.<span class="ident">span</span>, <span class="ident">event</span>);
}
<span class="doccomment">/// Get information that has been attributed to an emit statement node.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_emit</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Span</span><span class="op">></span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">span</span>: <span class="ident">T</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">Event</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">emits</span>.<span class="ident">get</span>(<span class="kw-2">&</span><span class="ident">span</span>.<span class="ident">into</span>())
}
<span class="doccomment">/// Attribute contextual information to a function definition node.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_function</span>(
<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>,
<span class="ident">spanned</span>: <span class="kw-2">&</span><span class="ident">Spanned</span><span class="op"><</span><span class="ident">fe</span>::<span class="ident">ContractStmt</span><span class="op">></span>,
<span class="ident">attributes</span>: <span class="ident">FunctionAttributes</span>,
) {
<span class="self">self</span>.<span class="ident">functions</span>.<span class="ident">insert</span>(<span class="ident">spanned</span>.<span class="ident">span</span>, <span class="ident">attributes</span>);
}
<span class="doccomment">/// Get information that has been attributed to a function definition node.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_function</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Span</span><span class="op">></span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">span</span>: <span class="ident">T</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">FunctionAttributes</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">functions</span>.<span class="ident">get</span>(<span class="kw-2">&</span><span class="ident">span</span>.<span class="ident">into</span>())
}
<span class="doccomment">/// Attribute contextual information to a declaration node.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_declaration</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">spanned</span>: <span class="kw-2">&</span><span class="ident">Spanned</span><span class="op"><</span><span class="ident">fe</span>::<span class="ident">FuncStmt</span><span class="op">></span>, <span class="ident">typ</span>: <span class="ident">FixedSize</span>) {
<span class="self">self</span>.<span class="ident">declarations</span>.<span class="ident">insert</span>(<span class="ident">spanned</span>.<span class="ident">span</span>, <span class="ident">typ</span>);
}
<span class="doccomment">/// Get information that has been attributed to a declaration node.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_declaration</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Span</span><span class="op">></span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">span</span>: <span class="ident">T</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">FixedSize</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">declarations</span>.<span class="ident">get</span>(<span class="kw-2">&</span><span class="ident">span</span>.<span class="ident">into</span>())
}
<span class="doccomment">/// Attribute contextual information to a contract definition node.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_contract</span>(
<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>,
<span class="ident">spanned</span>: <span class="kw-2">&</span><span class="ident">Spanned</span><span class="op"><</span><span class="ident">fe</span>::<span class="ident">ModuleStmt</span><span class="op">></span>,
<span class="ident">attributes</span>: <span class="ident">ContractAttributes</span>,
) {
<span class="self">self</span>.<span class="ident">contracts</span>.<span class="ident">insert</span>(<span class="ident">spanned</span>.<span class="ident">span</span>, <span class="ident">attributes</span>);
}
<span class="doccomment">/// Get information that has been attributed to a contract definition node.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_contract</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Span</span><span class="op">></span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">span</span>: <span class="ident">T</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">ContractAttributes</span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">contracts</span>.<span class="ident">get</span>(<span class="kw-2">&</span><span class="ident">span</span>.<span class="ident">into</span>())
}
}
<span class="doccomment">/// Performs semantic analysis of the source program and returns a `Context`</span>
<span class="doccomment">/// instance.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">analysis</span>(<span class="ident">module</span>: <span class="kw-2">&</span><span class="ident">fe</span>::<span class="ident">Module</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Context</span>, <span class="ident">SemanticError</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">context</span> <span class="op">=</span> <span class="ident">Context</span>::<span class="ident">new_shared</span>();
<span class="ident">traversal</span>::<span class="ident">module</span>::<span class="ident">module</span>(<span class="ident">Rc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="ident">context</span>), <span class="ident">module</span>)<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="ident">Rc</span>::<span class="ident">try_unwrap</span>(<span class="ident">context</span>)
.<span class="ident">map_err</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="string">"more than one strong reference pointing to context"</span>)
<span class="comment">// This should never panic.</span>
.<span class="ident">expect</span>(<span class="string">"failed to unwrap reference counter"</span>)
.<span class="ident">into_inner</span>())
}
<span class="kw">pub</span> <span class="kw">mod</span> <span class="ident">test_utils</span> {
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">namespace</span>::<span class="ident">types</span>::<span class="ident">FixedSize</span>;
<span class="kw">use</span> <span class="kw">crate</span>::{
<span class="ident">Context</span>,
<span class="ident">ExpressionAttributes</span>,
};
<span class="kw">use</span> <span class="ident">fe_parser</span>::<span class="ident">ast</span> <span class="kw">as</span> <span class="ident">fe</span>;
<span class="kw">use</span> <span class="ident">fe_parser</span>::<span class="ident">span</span>::{
<span class="ident">Span</span>,
<span class="ident">Spanned</span>,
};
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ContextHarness</span> {
<span class="kw">pub</span> <span class="ident">context</span>: <span class="ident">Context</span>,
<span class="kw">pub</span> <span class="ident">src</span>: <span class="ident">String</span>,
}
<span class="kw">impl</span> <span class="ident">ContextHarness</span> {
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">src</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> {
<span class="ident">ContextHarness</span> {
<span class="ident">context</span>: <span class="ident">Context</span>::<span class="ident">new</span>(),
<span class="ident">src</span>: <span class="ident">src</span>.<span class="ident">to_string</span>(),
}
}
<span class="kw">fn</span> <span class="ident">find_span</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">substr</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Span</span> {
<span class="kw">let</span> <span class="ident">start</span> <span class="op">=</span> <span class="self">self</span>
.<span class="ident">src</span>
.<span class="ident">find</span>(<span class="ident">substr</span>)
.<span class="ident">unwrap_or_else</span>(<span class="op">|</span><span class="op">|</span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"unable to find '{}' in '{}'"</span>, <span class="ident">substr</span>, <span class="self">self</span>.<span class="ident">src</span>));
<span class="ident">Span</span> {
<span class="ident">start</span>,
<span class="ident">end</span>: <span class="ident">start</span> <span class="op">+</span> <span class="ident">substr</span>.<span class="ident">len</span>(),
}
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_expression</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">substr</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">attributes</span>: <span class="ident">ExpressionAttributes</span>) {
<span class="kw">let</span> <span class="ident">span</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">find_span</span>(<span class="ident">substr</span>);
<span class="kw">let</span> <span class="ident">mock_spanned</span> <span class="op">=</span> <span class="ident">Spanned</span> {
<span class="ident">span</span>,
<span class="ident">node</span>: <span class="ident">fe</span>::<span class="ident">Expr</span>::<span class="ident">Name</span>(<span class="string">"foo"</span>),
};
<span class="self">self</span>.<span class="ident">context</span>.<span class="ident">add_expression</span>(<span class="kw-2">&</span><span class="ident">mock_spanned</span>, <span class="ident">attributes</span>)
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">add_declaration</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">substr</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">typ</span>: <span class="ident">FixedSize</span>) {
<span class="kw">let</span> <span class="ident">span</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">find_span</span>(<span class="ident">substr</span>);
<span class="kw">let</span> <span class="ident">mock_spanned</span> <span class="op">=</span> <span class="ident">Spanned</span> {
<span class="ident">span</span>,
<span class="ident">node</span>: <span class="ident">fe</span>::<span class="ident">FuncStmt</span>::<span class="ident">Expr</span> {
<span class="ident">value</span>: <span class="ident">fe</span>::<span class="ident">Expr</span>::<span class="ident">Name</span>(<span class="string">"foo"</span>),
},
};
<span class="self">self</span>.<span class="ident">context</span>.<span class="ident">add_declaration</span>(<span class="kw-2">&</span><span class="ident">mock_spanned</span>, <span class="ident">typ</span>)
}
}
}
</pre></div>
</section><section id="search" class="content hidden"></section><section class="footer"></section><script>window.rootPath = "../../";window.currentCrate = "fe_semantics";</script><script src="../../main.js"></script><script src="../../source-script.js"></script><script src="../../source-files.js"></script><script defer src="../../search-index.js"></script></body></html>