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
|
<!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 - subx/038---literal_strings.cc</title>
<meta name="Generator" content="Vim/8.0">
<meta name="plugin-version" content="vim7.4_v2">
<meta name="syntax" content="cpp">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
<meta name="colorscheme" content="minimal">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; }
body { font-size:12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; }
.subxS2Comment a { color:inherit; }
.subxS1Comment a { color:inherit; }
.subxComment a { color:inherit; }
.subxH2Comment a { color:inherit; }
.subxH1Comment a { color:inherit; }
* { font-size:12pt; font-size: 1em; }
.cSpecial { color: #008000; }
.LineNr { color:#444444; }
.traceAbsent { color: #c00000; }
.Constant { color:#00a0a0; }
.Delimiter { color:#800080; }
.Special { color:#c00000; }
.Identifier { color:#c0a020; }
.Normal { color: #aaaaaa; background-color: #080808; padding-bottom: 1px; }
.Comment { color: #8080ff; }
.traceContains { color: #008000; }
-->
</style>
<script type='text/javascript'>
<!--
/* function to open any folds containing a jumped-to line before jumping to it */
function JumpToLine()
{
var lineNum;
lineNum = window.location.hash;
lineNum = lineNum.substr(1); /* strip off '#' */
if (lineNum.indexOf('L') == -1) {
lineNum = 'L'+lineNum;
}
lineElem = document.getElementById(lineNum);
/* Always jump to new location even if the line was hidden inside a fold, or
* we corrected the raw number to a line ID.
*/
if (lineElem) {
lineElem.scrollIntoView(true);
}
return true;
}
if ('onhashchange' in window) {
window.onhashchange = JumpToLine;
}
-->
</script>
</head>
<body onload='JumpToLine();'>
<a href='https://github.com/akkartik/mu/blob/master/subx/038---literal_strings.cc'>https://github.com/akkartik/mu/blob/master/subx/038---literal_strings.cc</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment">//: Allow instructions to mention literals directly.</span>
<span id="L2" class="LineNr"> 2 </span><span class="Comment">//:</span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment">//: This layer will transparently move them to the global segment (assumed to</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment">//: always be the second segment).</span>
<span id="L5" class="LineNr"> 5 </span>
<span id="L6" class="LineNr"> 6 </span><span class="Delimiter">:(scenario transform_literal_string)</span>
<span id="L7" class="LineNr"> 7 </span>== <a href='031check_operands.cc.html#L11'>code</a>
<span id="L8" class="LineNr"> 8 </span>b8/copy <span class="Constant">"test"</span>/imm32
<span id="L9" class="LineNr"> 9 </span>== data <span class="Comment"># need to manually create this for now</span>
<span id="L10" class="LineNr"> 10 </span><span class="traceContains">+transform: -- move literal strings to data segment</span>
<span id="L11" class="LineNr"> 11 </span><span class="traceContains">+transform: adding global variable '__subx_global_1' containing "test"</span>
<span id="L12" class="LineNr"> 12 </span><span class="traceContains">+transform: instruction after <a href='011run.cc.html#L231'>transform</a>: 'b8 __subx_global_1'</span>
<span id="L13" class="LineNr"> 13 </span>
<span id="L14" class="LineNr"> 14 </span><span class="Comment">//: We don't rely on any transforms running in previous layers, but this layer</span>
<span id="L15" class="LineNr"> 15 </span><span class="Comment">//: knows about labels and global variables and will emit them for previous</span>
<span id="L16" class="LineNr"> 16 </span><span class="Comment">//: layers to transform.</span>
<span id="L17" class="LineNr"> 17 </span><span class="Delimiter">:(after "Begin Transforms")</span>
<span id="L18" class="LineNr"> 18 </span><span class="Comment">// Begin Level-3 Transforms</span>
<span id="L19" class="LineNr"> 19 </span><span class="Special"><a href='011run.cc.html#L229'>Transform</a></span><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='038---literal_strings.cc.html#L25'>transform_literal_strings</a><span class="Delimiter">);</span>
<span id="L20" class="LineNr"> 20 </span><span class="Comment">// End Level-3 Transforms</span>
<span id="L21" class="LineNr"> 21 </span>
<span id="L22" class="LineNr"> 22 </span><span class="Delimiter">:(before "End Globals")</span>
<span id="L23" class="LineNr"> 23 </span><span class="Normal">int</span> <span class="Special"><a href='038---literal_strings.cc.html#L23'>Next_auto_global</a></span> = <span class="Constant">1</span><span class="Delimiter">;</span>
<span id="L24" class="LineNr"> 24 </span><span class="Delimiter">:(code)</span>
<span id="L25" class="LineNr"> 25 </span><span class="Normal">void</span> <a href='038---literal_strings.cc.html#L25'>transform_literal_strings</a><span class="Delimiter">(</span>program& p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L26" class="LineNr"> 26 </span> <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- move literal strings to data segment"</span> << end<span class="Delimiter">();</span>
<span id="L27" class="LineNr"> 27 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L100'>segments</a><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L28" class="LineNr"> 28 </span> segment& <a href='031check_operands.cc.html#L11'>code</a> = p<span class="Delimiter">.</span><a href='011run.cc.html#L100'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
<span id="L29" class="LineNr"> 29 </span> segment data<span class="Delimiter">;</span>
<span id="L30" class="LineNr"> 30 </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 < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span><a href='031check_operands.cc.html#L11'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L31" class="LineNr"> 31 </span> line& inst = <a href='031check_operands.cc.html#L11'>code</a><span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L32" class="LineNr"> 32 </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 < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L33" class="LineNr"> 33 </span> word& curr = inst<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span>
<span id="L34" class="LineNr"> 34 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">.</span>data<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> != <span class="Constant">'"'</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L35" class="LineNr"> 35 </span> ostringstream global_name<span class="Delimiter">;</span>
<span id="L36" class="LineNr"> 36 </span> global_name << <span class="Constant">"__subx_global_"</span> << <span class="Special"><a href='038---literal_strings.cc.html#L23'>Next_auto_global</a></span><span class="Delimiter">;</span>
<span id="L37" class="LineNr"> 37 </span> ++<span class="Special"><a href='038---literal_strings.cc.html#L23'>Next_auto_global</a></span><span class="Delimiter">;</span>
<span id="L38" class="LineNr"> 38 </span> <a href='038---literal_strings.cc.html#L52'>add_global_to_data_segment</a><span class="Delimiter">(</span>global_name<span class="Delimiter">.</span>str<span class="Delimiter">(),</span> curr<span class="Delimiter">,</span> data<span class="Delimiter">);</span>
<span id="L39" class="LineNr"> 39 </span> curr<span class="Delimiter">.</span>data = global_name<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L40" class="LineNr"> 40 </span> <span class="Delimiter">}</span>
<span id="L41" class="LineNr"> 41 </span> <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"instruction after <a href='011run.cc.html#L231'>transform</a>: '"</span> << data_to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'"</span> << end<span class="Delimiter">();</span>
<span id="L42" class="LineNr"> 42 </span> <span class="Delimiter">}</span>
<span id="L43" class="LineNr"> 43 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>data<span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L44" class="LineNr"> 44 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>p<span class="Delimiter">.</span><a href='011run.cc.html#L100'>segments</a><span class="Delimiter">)</span> < <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L45" class="LineNr"> 45 </span> p<span class="Delimiter">.</span><a href='011run.cc.html#L100'>segments</a><span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">2</span><span class="Delimiter">);</span>
<span id="L46" class="LineNr"> 46 </span> p<span class="Delimiter">.</span><a href='011run.cc.html#L100'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>swap<span class="Delimiter">(</span>data<span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">);</span>
<span id="L47" class="LineNr"> 47 </span> <span class="Delimiter">}</span>
<span id="L48" class="LineNr"> 48 </span> vector<line>& existing_data = p<span class="Delimiter">.</span><a href='011run.cc.html#L100'>segments</a><span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">;</span>
<span id="L49" class="LineNr"> 49 </span> existing_data<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>existing_data<span class="Delimiter">.</span>end<span class="Delimiter">(),</span> data<span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> data<span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>end<span class="Delimiter">());</span>
<span id="L50" class="LineNr"> 50 </span><span class="Delimiter">}</span>
<span id="L51" class="LineNr"> 51 </span>
<span id="L52" class="LineNr"> 52 </span><span class="Normal">void</span> <a href='038---literal_strings.cc.html#L52'>add_global_to_data_segment</a><span class="Delimiter">(</span><span class="Normal">const</span> string& name<span class="Delimiter">,</span> <span class="Normal">const</span> word& value<span class="Delimiter">,</span> segment& data<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L53" class="LineNr"> 53 </span> <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"adding global variable '"</span> << name << <span class="Constant">"' containing "</span> << value<span class="Delimiter">.</span>data << end<span class="Delimiter">();</span>
<span id="L54" class="LineNr"> 54 </span> <span class="Comment">// emit label</span>
<span id="L55" class="LineNr"> 55 </span> data<span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>label<span class="Delimiter">(</span>name<span class="Delimiter">));</span>
<span id="L56" class="LineNr"> 56 </span> <span class="Comment">// emit size for size-prefixed array</span>
<span id="L57" class="LineNr"> 57 </span> data<span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='011run.cc.html#L117'>line</a><span class="Delimiter">());</span>
<span id="L58" class="LineNr"> 58 </span> emit_hex_bytes<span class="Delimiter">(</span>data<span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>back<span class="Delimiter">(),</span> <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>value<span class="Delimiter">.</span>data<span class="Delimiter">)</span>-<span class="Comment">/*</span><span class="Comment">skip quotes</span><span class="Comment">*/</span><span class="Constant">2</span><span class="Delimiter">,</span> <span class="Constant">4</span><span class="Comment">/*</span><span class="Comment">bytes</span><span class="Comment">*/</span><span class="Delimiter">);</span>
<span id="L59" class="LineNr"> 59 </span> <span class="Comment">// emit data byte by byte</span>
<span id="L60" class="LineNr"> 60 </span> data<span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='011run.cc.html#L117'>line</a><span class="Delimiter">());</span>
<span id="L61" class="LineNr"> 61 </span> line& curr = data<span class="Delimiter">.</span><a href='011run.cc.html#L109'>lines</a><span class="Delimiter">.</span>back<span class="Delimiter">();</span>
<span id="L62" class="LineNr"> 62 </span> <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Comment">/*</span><span class="Comment">skip start quote</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span> i < <a href='001help.cc.html#L157'>SIZE</a><span class="Delimiter">(</span>value<span class="Delimiter">.</span>data<span class="Delimiter">)</span>-<span class="Comment">/*</span><span class="Comment">skip end quote</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L63" class="LineNr"> 63 </span> <span class="Normal">char</span> c = value<span class="Delimiter">.</span>data<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span id="L64" class="LineNr"> 64 </span> curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='011run.cc.html#L123'>word</a><span class="Delimiter">());</span>
<span id="L65" class="LineNr"> 65 </span> curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>back<span class="Delimiter">().</span>data = <a href='030---operands.cc.html#L286'>hex_byte_to_string</a><span class="Delimiter">(</span>c<span class="Delimiter">);</span>
<span id="L66" class="LineNr"> 66 </span> curr<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>back<span class="Delimiter">().</span>metadata<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>string<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">,</span> c<span class="Delimiter">));</span>
<span id="L67" class="LineNr"> 67 </span> <span class="Delimiter">}</span>
<span id="L68" class="LineNr"> 68 </span><span class="Delimiter">}</span>
<span id="L69" class="LineNr"> 69 </span>
<span id="L70" class="LineNr"> 70 </span><a href='011run.cc.html#L117'>line</a> label<span class="Delimiter">(</span>string s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L71" class="LineNr"> 71 </span> <a href='011run.cc.html#L117'>line</a> result<span class="Delimiter">;</span>
<span id="L72" class="LineNr"> 72 </span> result<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='011run.cc.html#L123'>word</a><span class="Delimiter">());</span>
<span id="L73" class="LineNr"> 73 </span> result<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>back<span class="Delimiter">().</span>data = <span class="Delimiter">(</span>s+<span class="Constant">":"</span><span class="Delimiter">);</span>
<span id="L74" class="LineNr"> 74 </span> <span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span id="L75" class="LineNr"> 75 </span><span class="Delimiter">}</span>
<span id="L76" class="LineNr"> 76 </span>
<span id="L77" class="LineNr"> 77 </span><span class="Comment">//: Within strings, whitespace is significant. So we need to redo our instruction</span>
<span id="L78" class="LineNr"> 78 </span><span class="Comment">//: parsing.</span>
<span id="L79" class="LineNr"> 79 </span>
<span id="L80" class="LineNr"> 80 </span><span class="Delimiter">:(scenarios parse_instruction_character_by_character)</span>
<span id="L81" class="LineNr"> 81 </span><span class="Delimiter">:(scenario instruction_with_string_literal)</span>
<span id="L82" class="LineNr"> 82 </span>a <span class="Constant">"abc def"</span> z <span class="Comment"># two spaces inside string</span>
<span id="L83" class="LineNr"> 83 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: a</span>
<span id="L84" class="LineNr"> 84 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: "abc def"</span>
<span id="L85" class="LineNr"> 85 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: z</span>
<span id="L86" class="LineNr"> 86 </span><span class="Comment"># no other words</span>
<span id="L87" class="LineNr"> 87 </span>$parse2: <span class="Constant">3</span>
<span id="L88" class="LineNr"> 88 </span>
<span id="L89" class="LineNr"> 89 </span><span class="Delimiter">:(before "End Line Parsing Special-cases(line_data -> l)")</span>
<span id="L90" class="LineNr"> 90 </span><span class="Normal">if</span> <span class="Delimiter">(</span>line_data<span class="Delimiter">.</span>find<span class="Delimiter">(</span><span class="Constant">'"'</span><span class="Delimiter">)</span> != string::npos<span class="Delimiter">)</span> <span class="Delimiter">{</span> <span class="Comment">// can cause false-positives, but we can handle them</span>
<span id="L91" class="LineNr"> 91 </span> parse_instruction_character_by_character<span class="Delimiter">(</span>line_data<span class="Delimiter">,</span> l<span class="Delimiter">);</span>
<span id="L92" class="LineNr"> 92 </span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span id="L93" class="LineNr"> 93 </span><span class="Delimiter">}</span>
<span id="L94" class="LineNr"> 94 </span>
<span id="L95" class="LineNr"> 95 </span><span class="Delimiter">:(code)</span>
<span id="L96" class="LineNr"> 96 </span><span class="Normal">void</span> parse_instruction_character_by_character<span class="Delimiter">(</span><span class="Normal">const</span> string& line_data<span class="Delimiter">,</span> vector<line>& out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L97" class="LineNr"> 97 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>line_data<span class="Delimiter">.</span>find<span class="Delimiter">(</span><span class="cSpecial">'\n'</span><span class="Delimiter">)</span> != string::npos && line_data<span class="Delimiter">.</span>find<span class="Delimiter">(</span><span class="cSpecial">'\n'</span><span class="Delimiter">)</span> != line_data<span class="Delimiter">.</span>size<span class="Delimiter">()</span>-<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L98" class="LineNr"> 98 </span> <a href='003trace.cc.html#L210'>raise</a> << <span class="Constant">"parse_instruction_character_by_character: should receive only a single line\n"</span> << end<span class="Delimiter">();</span>
<span id="L99" class="LineNr"> 99 </span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span id="L100" class="LineNr">100 </span> <span class="Delimiter">}</span>
<span id="L101" class="LineNr">101 </span> <span class="Comment">// parse literals</span>
<span id="L102" class="LineNr">102 </span> istringstream in<span class="Delimiter">(</span>line_data<span class="Delimiter">);</span>
<span id="L103" class="LineNr">103 </span> in >> std::noskipws<span class="Delimiter">;</span>
<span id="L104" class="LineNr">104 </span> <a href='011run.cc.html#L117'>line</a> result<span class="Delimiter">;</span>
<span id="L105" class="LineNr">105 </span> <span class="Comment">// add tokens (words or strings) one by one</span>
<span id="L106" class="LineNr">106 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><a href='001help.cc.html#L265'>has_data</a><span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L107" class="LineNr">107 </span> <a href='038---literal_strings.cc.html#L158'>skip_whitespace</a><span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span id="L108" class="LineNr">108 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L109" class="LineNr">109 </span> <span class="Normal">char</span> c = in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span id="L110" class="LineNr">110 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">'#'</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// comment; drop rest of line</span>
<span id="L111" class="LineNr">111 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">':'</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// line metadata; skip for now</span>
<span id="L112" class="LineNr">112 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">'.'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L113" class="LineNr">113 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span> <span class="Comment">// comment token at end of line</span>
<span id="L114" class="LineNr">114 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>isspace<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()))</span>
<span id="L115" class="LineNr">115 </span> <span class="Identifier">continue</span><span class="Delimiter">;</span> <span class="Comment">// '.' followed by space is comment token; skip</span>
<span id="L116" class="LineNr">116 </span> <span class="Delimiter">}</span>
<span id="L117" class="LineNr">117 </span> result<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>push_back<span class="Delimiter">(</span><a href='011run.cc.html#L123'>word</a><span class="Delimiter">());</span>
<span id="L118" class="LineNr">118 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">'"'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L119" class="LineNr">119 </span> <span class="Comment">// slurp word data</span>
<span id="L120" class="LineNr">120 </span> ostringstream d<span class="Delimiter">;</span>
<span id="L121" class="LineNr">121 </span> d << c<span class="Delimiter">;</span>
<span id="L122" class="LineNr">122 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><a href='001help.cc.html#L265'>has_data</a><span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L123" class="LineNr">123 </span> in >> c<span class="Delimiter">;</span>
<span id="L124" class="LineNr">124 </span> d << c<span class="Delimiter">;</span>
<span id="L125" class="LineNr">125 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">'"'</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L126" class="LineNr">126 </span> <span class="Delimiter">}</span>
<span id="L127" class="LineNr">127 </span> result<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>back<span class="Delimiter">().</span>data = d<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span id="L128" class="LineNr">128 </span> <span class="Comment">// slurp metadata</span>
<span id="L129" class="LineNr">129 </span> ostringstream m<span class="Delimiter">;</span>
<span id="L130" class="LineNr">130 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>!isspace<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">())</span> && <a href='001help.cc.html#L265'>has_data</a><span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span id="L131" class="LineNr">131 </span> in >> c<span class="Delimiter">;</span>
<span id="L132" class="LineNr">132 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>c == <span class="Constant">'/'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L133" class="LineNr">133 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!m<span class="Delimiter">.</span>str<span class="Delimiter">().</span>empty<span class="Delimiter">())</span> result<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>back<span class="Delimiter">().</span>metadata<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>m<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
<span id="L134" class="LineNr">134 </span> m<span class="Delimiter">.</span>str<span class="Delimiter">(</span><span class="Constant">""</span><span class="Delimiter">);</span>
<span id="L135" class="LineNr">135 </span> <span class="Delimiter">}</span>
<span id="L136" class="LineNr">136 </span> <span class="Normal">else</span> <span class="Delimiter">{</span>
<span id="L137" class="LineNr">137 </span> m << c<span class="Delimiter">;</span>
<span id="L138" class="LineNr">138 </span> <span class="Delimiter">}</span>
<span id="L139" class="LineNr">139 </span> <span class="Delimiter">}</span>
<span id="L140" class="LineNr">140 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!m<span class="Delimiter">.</span>str<span class="Delimiter">().</span>empty<span class="Delimiter">())</span> result<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>back<span class="Delimiter">().</span>metadata<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>m<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
<span id="L141" class="LineNr">141 </span> <span class="Delimiter">}</span>
<span id="L142" class="LineNr">142 </span> <span class="Normal">else</span> <span class="Delimiter">{</span>
<span id="L143" class="LineNr">143 </span> <span class="Comment">// slurp all characters until whitespace</span>
<span id="L144" class="LineNr">144 </span> ostringstream w<span class="Delimiter">;</span>
<span id="L145" class="LineNr">145 </span> w << c<span class="Delimiter">;</span>
<span id="L146" class="LineNr">146 </span> <span class="Normal">while</span> <span class="Delimiter">(</span>!isspace<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">())</span> && <a href='001help.cc.html#L265'>has_data</a><span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Delimiter">{</span> <span class="Comment">// peek can sometimes trigger eof(), so do it first</span>
<span id="L147" class="LineNr">147 </span> in >> c<span class="Delimiter">;</span>
<span id="L148" class="LineNr">148 </span> w << c<span class="Delimiter">;</span>
<span id="L149" class="LineNr">149 </span> <span class="Delimiter">}</span>
<span id="L150" class="LineNr">150 </span> <a href='011run.cc.html#L191'>parse_word</a><span class="Delimiter">(</span>w<span class="Delimiter">.</span>str<span class="Delimiter">(),</span> result<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>back<span class="Delimiter">());</span>
<span id="L151" class="LineNr">151 </span> <span class="Delimiter">}</span>
<span id="L152" class="LineNr">152 </span> <a href='003trace.cc.html#L203'>trace</a><span class="Delimiter">(</span><span class="Constant">99</span><span class="Delimiter">,</span> <span class="Constant">"parse2"</span><span class="Delimiter">)</span> << <span class="Constant">"word: "</span> << to_string<span class="Delimiter">(</span>result<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>back<span class="Delimiter">())</span> << end<span class="Delimiter">();</span>
<span id="L153" class="LineNr">153 </span> <span class="Delimiter">}</span>
<span id="L154" class="LineNr">154 </span> <span class="Normal">if</span> <span class="Delimiter">(</span>!result<span class="Delimiter">.</span><a href='011run.cc.html#L118'>words</a><span class="Delimiter">.</span>empty<span class="Delimiter">())</span>
<span id="L155" class="LineNr">155 </span> out<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>result<span class="Delimiter">);</span>
<span id="L156" class="LineNr">156 </span><span class="Delimiter">}</span>
<span id="L157" class="LineNr">157 </span>
<span id="L158" class="LineNr">158 </span><span class="Normal">void</span> <a href='038---literal_strings.cc.html#L158'>skip_whitespace</a><span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L159" class="LineNr">159 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><span class="Constant">true</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L160" class="LineNr">160 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L265'>has_data</a><span class="Delimiter">(</span>in<span class="Delimiter">)</span> && isspace<span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()))</span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span id="L161" class="LineNr">161 </span> <span class="Normal">else</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
<span id="L162" class="LineNr">162 </span> <span class="Delimiter">}</span>
<span id="L163" class="LineNr">163 </span><span class="Delimiter">}</span>
<span id="L164" class="LineNr">164 </span>
<span id="L165" class="LineNr">165 </span><span class="Normal">void</span> <a href='038---literal_strings.cc.html#L165'>skip_comment</a><span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L166" class="LineNr">166 </span> <span class="Normal">if</span> <span class="Delimiter">(</span><a href='001help.cc.html#L265'>has_data</a><span class="Delimiter">(</span>in<span class="Delimiter">)</span> && in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">'#'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L167" class="LineNr">167 </span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span id="L168" class="LineNr">168 </span> <span class="Normal">while</span> <span class="Delimiter">(</span><a href='001help.cc.html#L265'>has_data</a><span class="Delimiter">(</span>in<span class="Delimiter">)</span> && in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> != <span class="cSpecial">'\n'</span><span class="Delimiter">)</span> in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span id="L169" class="LineNr">169 </span> <span class="Delimiter">}</span>
<span id="L170" class="LineNr">170 </span><span class="Delimiter">}</span>
<span id="L171" class="LineNr">171 </span>
<span id="L172" class="LineNr">172 </span><span class="Comment">// helper for tests</span>
<span id="L173" class="LineNr">173 </span><span class="Normal">void</span> parse_instruction_character_by_character<span class="Delimiter">(</span><span class="Normal">const</span> string& line_data<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span id="L174" class="LineNr">174 </span> vector<line> out<span class="Delimiter">;</span>
<span id="L175" class="LineNr">175 </span> parse_instruction_character_by_character<span class="Delimiter">(</span>line_data<span class="Delimiter">,</span> out<span class="Delimiter">);</span>
<span id="L176" class="LineNr">176 </span><span class="Delimiter">}</span>
<span id="L177" class="LineNr">177 </span>
<span id="L178" class="LineNr">178 </span><span class="Delimiter">:(scenario parse2_comment_token_in_middle)</span>
<span id="L179" class="LineNr">179 </span>a <span class="Delimiter">.</span> z
<span id="L180" class="LineNr">180 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: a</span>
<span id="L181" class="LineNr">181 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: z</span>
<span id="L182" class="LineNr">182 </span><span class="traceAbsent">-parse2: <a href='011run.cc.html#L123'>word</a>: .</span>
<span id="L183" class="LineNr">183 </span><span class="Comment"># no other words</span>
<span id="L184" class="LineNr">184 </span>$parse2: <span class="Constant">2</span>
<span id="L185" class="LineNr">185 </span>
<span id="L186" class="LineNr">186 </span><span class="Delimiter">:(scenario parse2_word_starting_with_dot)</span>
<span id="L187" class="LineNr">187 </span>a <span class="Delimiter">.</span>b c
<span id="L188" class="LineNr">188 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: a</span>
<span id="L189" class="LineNr">189 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: .b</span>
<span id="L190" class="LineNr">190 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: c</span>
<span id="L191" class="LineNr">191 </span>
<span id="L192" class="LineNr">192 </span><span class="Delimiter">:(scenario parse2_comment_token_at_start)</span>
<span id="L193" class="LineNr">193 </span><span class="Delimiter">.</span> a b
<span id="L194" class="LineNr">194 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: a</span>
<span id="L195" class="LineNr">195 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: b</span>
<span id="L196" class="LineNr">196 </span><span class="traceAbsent">-parse2: <a href='011run.cc.html#L123'>word</a>: .</span>
<span id="L197" class="LineNr">197 </span>
<span id="L198" class="LineNr">198 </span><span class="Delimiter">:(scenario parse2_comment_token_at_end)</span>
<span id="L199" class="LineNr">199 </span>a b <span class="Delimiter">.</span>
<span id="L200" class="LineNr">200 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: a</span>
<span id="L201" class="LineNr">201 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: b</span>
<span id="L202" class="LineNr">202 </span><span class="traceAbsent">-parse2: <a href='011run.cc.html#L123'>word</a>: .</span>
<span id="L203" class="LineNr">203 </span>
<span id="L204" class="LineNr">204 </span><span class="Delimiter">:(scenario parse2_word_starting_with_dot_at_start)</span>
<span id="L205" class="LineNr">205 </span><span class="Delimiter">.</span>a b c
<span id="L206" class="LineNr">206 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: .a</span>
<span id="L207" class="LineNr">207 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: b</span>
<span id="L208" class="LineNr">208 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: c</span>
<span id="L209" class="LineNr">209 </span>
<span id="L210" class="LineNr">210 </span><span class="Delimiter">:(scenario parse2_metadata)</span>
<span id="L211" class="LineNr">211 </span><span class="Delimiter">.</span>a b/c d
<span id="L212" class="LineNr">212 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: .a</span>
<span id="L213" class="LineNr">213 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: b /c</span>
<span id="L214" class="LineNr">214 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: d</span>
<span id="L215" class="LineNr">215 </span>
<span id="L216" class="LineNr">216 </span><span class="Delimiter">:(scenario parse2_string_with_metadata)</span>
<span id="L217" class="LineNr">217 </span>a <span class="Constant">"bc def"</span>/disp32 g
<span id="L218" class="LineNr">218 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: a</span>
<span id="L219" class="LineNr">219 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: "bc def" /disp32</span>
<span id="L220" class="LineNr">220 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: g</span>
<span id="L221" class="LineNr">221 </span>
<span id="L222" class="LineNr">222 </span><span class="Delimiter">:(scenario parse2_string_with_metadata_at_end)</span>
<span id="L223" class="LineNr">223 </span>a <span class="Constant">"bc def"</span>/disp32
<span id="L224" class="LineNr">224 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: a</span>
<span id="L225" class="LineNr">225 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: "bc def" /disp32</span>
<span id="L226" class="LineNr">226 </span>
<span id="L227" class="LineNr">227 </span><span class="Delimiter">:(code)</span>
<span id="L228" class="LineNr">228 </span><span class="Normal">void</span> <a href='038---literal_strings.cc.html#L228'>test_parse2_string_with_metadata_at_end_of_line_without_newline</a><span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span id="L229" class="LineNr">229 </span> parse_instruction_character_by_character<span class="Delimiter">(</span>
<span id="L230" class="LineNr">230 </span> <span class="Constant">"68/push \"</span>test\<span class="Constant">"/f"</span> <span class="Comment">// no newline, which is how calls from parse() will look</span>
<span id="L231" class="LineNr">231 </span> <span class="Delimiter">);</span>
<span id="L232" class="LineNr">232 </span> <a href='003trace.cc.html#L257'>CHECK_TRACE_CONTENTS</a><span class="Delimiter">(</span>
<span id="L233" class="LineNr">233 </span> <span class="Constant">"parse2: <a href='011run.cc.html#L123'>word</a>: 68 /push^D"</span>
<span id="L234" class="LineNr">234 </span> <span class="Constant">"parse2: <a href='011run.cc.html#L123'>word</a>: \"</span>test\<span class="Constant">" /f^D"</span>
<span id="L235" class="LineNr">235 </span> <span class="Delimiter">);</span>
<span id="L236" class="LineNr">236 </span><span class="Delimiter">}</span>
<span id="L237" class="LineNr">237 </span>
<span id="L238" class="LineNr">238 </span><span class="Comment">//: Make sure slashes inside strings don't trigger adding stuff from inside the</span>
<span id="L239" class="LineNr">239 </span><span class="Comment">//: string to metadata.</span>
<span id="L240" class="LineNr">240 </span><span class="Delimiter">:(scenario parse2_string_containing_slashes)</span>
<span id="L241" class="LineNr">241 </span>a <span class="Constant">"bc/def"</span>/disp32
<span id="L242" class="LineNr">242 </span><span class="traceContains">+parse2: <a href='011run.cc.html#L123'>word</a>: "bc/def" /disp32</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|