GCC Code Coverage Report


Directory: ../src/
File: /home/joels/Current/lispbm/src/print.c
Date: 2025-10-27 19:12:55
Exec Total Coverage
Lines: 278 303 91.7%
Functions: 25 25 100.0%
Branches: 140 206 68.0%

Line Branch Exec Source
1 /*
2 Copyright 2018, 2020 - 2024 Joel Svensson svenssonjoel@yahoo.se
3 2022 Benjamin Vedder
4
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 #include <stdio.h>
20 #include <string.h>
21 #include <ctype.h>
22 #include <inttypes.h>
23 #include <lbm_types.h>
24 #include <lbm_custom_type.h>
25
26 #include "print.h"
27 #include "heap.h"
28 #include "symrepr.h"
29 #include "stack.h"
30 #include "lbm_channel.h"
31
32 #define PRINT 1
33 #define PRINT_SPACE 2
34 #define START_LIST 3
35 #define CONTINUE_LIST 4
36 #define END_LIST 5
37 #define PRINT_DOT 6
38 #define START_ARRAY 7
39 #define CONTINUE_ARRAY 8
40 #define END_ARRAY 9
41
42 static lbm_stack_t print_stack = { NULL, 0, 0};
43 static bool print_has_stack = false;
44
45 const char *failed_str = "Error: print failed\n";
46
47 // is_printable_string is turning out to be a headache.
48 // What do we want from this function???
49 //
50 // Value | Print as | Condition
51 // [0] | [0] |
52 // [1] | [1] |
53 // "" | [0] | (array->size <= 1) => false
54 // "hej" | "hej" | printable characters followed by a 0
55 // [65 66 67 0 65 66 67 0] | [65 66 67 0 65 66 67 0] | position of first 0 after printable characters = array->size-1
56 // [0 65 66 0] | [0 65 66 0] | position of first 0 after printable characters = array->size-1
57 6573 bool lbm_value_is_printable_string(lbm_value v, char **str) {
58 6573 bool is_a_string = false;
59 6573 lbm_array_header_t *array = lbm_dec_array_r(v);
60
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6573 if (array) {
61 5564 char *c_data = (char *)array->data;
62
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5564 if (array->size > 1) { // nonzero length
63 5050 unsigned int i = 0;
64 5050 is_a_string = true;
65
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17420 for (i = 0; i < array->size; i ++) {
66
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17416 if (c_data[i] == 0) break;
67
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13856 if (!isprint((unsigned char)c_data[i]) && ((c_data[i] < 8) || c_data[i] > 13)) {
68 1486 is_a_string = false;
69 1486 break;
70 }
71 }
72
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5050 if (i > 0 && i != array->size-1 && c_data[i-1] != 0) is_a_string = false;
73
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5050 if (array->size-1 > i) is_a_string = false;
74
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5050 if (is_a_string) {
75 1864 *str = (char*)array->data;
76 }
77 }
78 }
79 6573 return is_a_string;
80 }
81
82 572348 static int push_n(lbm_stack_t *s, lbm_uint *values, lbm_uint n) {
83
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572348 if (s->sp + n < s->size) {
84
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1726507 for (lbm_uint i = 0; i < n; i ++) {
85 1154159 s->data[s->sp+i] = values[i];
86 }
87 572348 s->sp+=n;
88 572348 return 1;
89 }
90 return 0;
91 }
92
93 22390 int lbm_print_init(lbm_uint print_stack_size) {
94
95
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22390 if (print_stack_size == 0)
96 return 0;
97
98 22390 lbm_uint *print_stack_storage = (lbm_uint*)lbm_malloc(print_stack_size * sizeof(lbm_uint));
99
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22390 if (!print_stack_storage) return 0;
100
101
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22390 if (lbm_stack_create(&print_stack, print_stack_storage, print_stack_size)) {
102 22390 print_has_stack = true;
103 22390 return 1;
104 }
105 return 0;
106 }
107
108 #define EMIT_BUFFER_SIZE 30
109
110 #define EMIT_FAILED -1
111 #define EMIT_OK 0
112
113 704315 static int print_emit_string(lbm_char_channel_t *chan, char* str) {
114
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704315 if (str == NULL) return EMIT_FAILED;
115
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2450281 while (*str != 0) {
116 1999692 int r = lbm_channel_write(chan, *str);
117 1999692 str++;
118
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1999692 if (r != CHANNEL_SUCCESS) return EMIT_FAILED;
119 }
120 450589 return EMIT_OK;
121 }
122
123 224124 static int print_emit_char(lbm_char_channel_t *chan, char c) {
124
125 224124 int r = lbm_channel_write(chan, c);
126
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224124 if (r != CHANNEL_SUCCESS) return EMIT_FAILED;
127 223694 return EMIT_OK;
128 }
129
130
131 2920 static int emit_escape(lbm_char_channel_t *chan, char c) {
132
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2920 switch(c) {
133 60 case '"': return print_emit_string(chan, "\\\"");
134 case '\n': return print_emit_string(chan, "\\n");
135 case '\r': return print_emit_string(chan, "\\r");
136 case '\t': return print_emit_string(chan, "\\t");
137 84 case '\\': return print_emit_string(chan, "\\\\");
138 2776 default:
139 2776 return print_emit_char(chan, c);
140 }
141 }
142
143 685 static int print_emit_string_value(lbm_char_channel_t *chan, char* str) {
144
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685 if (str == NULL) return EMIT_FAILED;
145
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3605 while (*str != 0) {
146 2920 int r = emit_escape(chan, *str++);
147
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2920 if (r != EMIT_OK) return r;
148 }
149 685 return EMIT_OK;
150 }
151
152 268424 static int print_emit_symbol(lbm_char_channel_t *chan, lbm_value sym) {
153 268424 char *str_ptr = (char*)lbm_get_name_by_symbol(lbm_dec_sym(sym));
154 268424 return print_emit_string(chan, str_ptr);
155 }
156
157 42446 static int print_emit_i(lbm_char_channel_t *chan, lbm_int v) {
158 char buf[EMIT_BUFFER_SIZE];
159 42446 snprintf(buf, EMIT_BUFFER_SIZE, "%"PRI_INT, v);
160 42446 return print_emit_string(chan, buf);
161 }
162
163 21610 static int print_emit_u(lbm_char_channel_t *chan, lbm_uint v, bool ps) {
164 char buf[EMIT_BUFFER_SIZE];
165
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21610 snprintf(buf, EMIT_BUFFER_SIZE, "%"PRI_UINT"%s", v, ps ? "u" : "");
166 21610 return print_emit_string(chan, buf);
167 }
168
169 301918 static int print_emit_byte(lbm_char_channel_t *chan, uint8_t v, bool ps) {
170 char buf[EMIT_BUFFER_SIZE];
171
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301918 snprintf(buf, EMIT_BUFFER_SIZE, "%u%s", v, ps ? "b" : "");
172 301918 return print_emit_string(chan, buf);
173 }
174
175 432 static int print_emit_float(lbm_char_channel_t *chan, float v, bool ps) {
176 char buf[EMIT_BUFFER_SIZE];
177
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432 snprintf(buf, EMIT_BUFFER_SIZE, "%"PRI_FLOAT"%s", (double)v, ps ? "f32" : "");
178 432 return print_emit_string(chan, buf);
179 }
180
181 339 static int print_emit_double(lbm_char_channel_t *chan, double v, bool ps) {
182 char buf[EMIT_BUFFER_SIZE];
183
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339 snprintf(buf, EMIT_BUFFER_SIZE, "%lf%s", v, ps ? "f64" : "");
184 339 return print_emit_string(chan, buf);
185 }
186
187 1130 static int print_emit_u32(lbm_char_channel_t *chan, uint32_t v, bool ps) {
188 char buf[EMIT_BUFFER_SIZE];
189
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1130 snprintf(buf,EMIT_BUFFER_SIZE, "%"PRIu32"%s", v, ps ? "u32" : "");
190 1130 return print_emit_string(chan, buf);
191 }
192
193 112 static int print_emit_i32(lbm_char_channel_t *chan, int32_t v, bool ps) {
194 char buf[EMIT_BUFFER_SIZE];
195
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112 snprintf(buf,EMIT_BUFFER_SIZE, "%"PRId32"%s", v, ps ? "i32" : "");
196 112 return print_emit_string(chan, buf);
197 }
198
199 112 static int print_emit_u64(lbm_char_channel_t *chan, uint64_t v, bool ps) {
200 char buf[EMIT_BUFFER_SIZE];
201
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112 snprintf(buf,EMIT_BUFFER_SIZE, "%"PRIu64"%s", v, ps ? "u64" : "");
202 112 return print_emit_string(chan, buf);
203 }
204
205 112 static int print_emit_i64(lbm_char_channel_t *chan, int64_t v, bool ps) {
206 char buf[EMIT_BUFFER_SIZE];
207
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112 snprintf(buf,EMIT_BUFFER_SIZE, "%"PRId64"%s", v, ps ? "i64" : "");
208 112 return print_emit_string(chan, buf);
209 }
210
211 50874 static int print_emit_continuation(lbm_char_channel_t *chan, lbm_value v) {
212 char buf[EMIT_BUFFER_SIZE];
213 50874 lbm_uint cont = (v & ~LBM_CONTINUATION_INTERNAL) >> LBM_ADDRESS_SHIFT;
214 50874 snprintf(buf, EMIT_BUFFER_SIZE, "CONT[" "%"PRI_UINT"]", cont);
215 50874 return print_emit_string(chan, buf);
216 }
217
218 2 static int print_emit_custom(lbm_char_channel_t *chan, lbm_value v) {
219 2 lbm_uint *custom = (lbm_uint*)lbm_car(v);
220 int r; // NULL checks works against SYM_NIL.
221
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2 if (custom && custom[CUSTOM_TYPE_DESCRIPTOR]) {
222 2 r = print_emit_string(chan, (char*)custom[CUSTOM_TYPE_DESCRIPTOR]);
223 } else {
224 r = print_emit_string(chan, "INVALID_CUSTOM_TYPE");
225 }
226 2 return r;
227 }
228
229 56 static int print_emit_defrag_mem(lbm_char_channel_t *chan, lbm_value v) {
230 (void) v;
231 56 return print_emit_string(chan, "DM");
232 }
233
234 12108 static int print_emit_channel(lbm_char_channel_t *chan, lbm_value v) {
235 (void) v;
236 12108 return print_emit_string(chan, "~CHANNEL~");
237 }
238
239 3546 static int print_emit_array_data(lbm_char_channel_t *chan, lbm_array_header_t *array) {
240
241 3546 int r = print_emit_char(chan, '[');
242
243
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3546 if (r == EMIT_OK) {
244
245
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304456 for (unsigned int i = 0; i < array->size; i ++) {
246
247 300910 char *c_data = (char*)array->data;
248 300910 r = print_emit_byte(chan, (uint8_t)c_data[i], false);
249
250
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300910 if (r == EMIT_OK && i != array->size - 1) {
251 44468 r = print_emit_char(chan, ' ');
252 }
253 }
254
255
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3546 if (r != EMIT_OK) return r;
256 3266 return print_emit_char(chan, ']');
257 }
258 return r;
259 }
260
261 4455 static int print_emit_bytearray(lbm_char_channel_t *chan, lbm_value v) {
262 4455 int r = 0;
263 char *str;
264 4455 lbm_array_header_t *array = lbm_dec_array_r(v);
265
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4455 if (array) {
266
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4231 if (lbm_value_is_printable_string(v, &str)) {
267 685 r = print_emit_char(chan, '"');
268
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685 if (r == EMIT_OK) {
269 685 r = print_emit_string_value(chan, str);
270
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685 if (r == EMIT_OK) {
271 685 r = print_emit_char(chan, '"');
272 }
273 }
274 } else {
275 3546 r= print_emit_array_data(chan, array);
276 }
277 } else {
278 224 r = print_emit_string(chan, "[INVALID_ARRAY]");
279 }
280 4455 return r;
281 }
282
283
284 336466 static int lbm_print_internal(lbm_char_channel_t *chan, lbm_value v) {
285
286 336466 lbm_stack_clear(&print_stack);
287 336466 lbm_value start_print[2] = {v, PRINT};
288 336466 push_n(&print_stack, start_print, 2);
289 336466 bool chan_full = false;
290 lbm_value curr;
291 lbm_uint instr;
292 336466 int r = EMIT_FAILED;
293
294
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965864 while (!lbm_stack_is_empty(&print_stack) && !chan_full) {
295 629576 lbm_pop(&print_stack, &instr);
296
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629576 switch (instr) {
297 185 case START_ARRAY: {
298 185 lbm_pop(&print_stack, &curr);
299 185 int res = 1;
300 185 r = print_emit_string(chan, "[|");
301 185 lbm_array_header_t *arr = (lbm_array_header_t*)lbm_car(curr);
302 185 lbm_uint size = arr->size / sizeof(lbm_value);
303 185 lbm_value *arrdata = (lbm_value*)arr->data;
304
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185 if (size >= 1) {
305 185 lbm_value continuation[5] =
306 {1, // next index
307 185 (lbm_uint) arr,
308 CONTINUE_ARRAY,
309 185 arrdata[0], // first elt
310 PRINT};
311
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185 res = res && push_n(&print_stack, continuation, 5);
312 } else {
313 res = res && lbm_push(&print_stack, END_ARRAY);
314 }
315
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185 if (!res) {
316 return EMIT_FAILED;
317 }
318 185 break;
319 }
320 553 case CONTINUE_ARRAY: {
321 lbm_uint arr_ptr;
322 lbm_array_header_t *arr;
323 lbm_uint ix;
324 553 int res = 1;
325 553 lbm_pop_2(&print_stack, &arr_ptr, &ix);
326 553 arr = (lbm_array_header_t *)arr_ptr;
327 553 lbm_value *arrdata = (lbm_value*)arr->data;
328
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553 if (ix < (arr->size / sizeof(lbm_value))) {
329 368 r = print_emit_char(chan, ' ');
330 368 lbm_value continuation[5] =
331 368 {ix + 1,
332 368 (lbm_uint) arr,
333 CONTINUE_ARRAY,
334 368 arrdata[ix],
335 PRINT};
336
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368 res = res && push_n(&print_stack, continuation, 5);
337 } else {
338
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185 res = res && lbm_push(&print_stack, END_ARRAY);
339 }
340
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553 if (!res) {
341 return EMIT_FAILED;
342 }
343 553 break;
344 }
345 185 case END_ARRAY: {
346 185 r = print_emit_string(chan, "|]");
347 185 break;
348 }
349 53016 case START_LIST: {
350 53016 lbm_pop(&print_stack, &curr);
351 53016 r = print_emit_char(chan, '(');
352
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53016 if (r != EMIT_OK) return r;
353 53012 lbm_value car_val = lbm_car(curr);
354 53012 lbm_value cdr_val = lbm_cdr(curr);
355 53012 int res = 1;
356
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61631 if (lbm_type_of(cdr_val) == LBM_TYPE_CONS ||
357 8619 lbm_type_of(cdr_val) == (LBM_TYPE_CONS | LBM_PTR_TO_CONSTANT_BIT)) {
358 44407 lbm_value cont[2] = {cdr_val, CONTINUE_LIST};
359
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44407 res = res && push_n(&print_stack, cont, 2);
360
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8605 } else if (lbm_type_of(cdr_val) == LBM_TYPE_SYMBOL &&
361 cdr_val == ENC_SYM_NIL) {
362
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4708 res = res && lbm_push(&print_stack, END_LIST);
363 } else {
364 3897 lbm_value cont[4] = {END_LIST, cdr_val, PRINT, PRINT_DOT};
365
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3897 res = res && push_n(&print_stack, cont, 4);
366 }
367 53012 lbm_value cont[2] = {car_val, PRINT};
368
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53012 res = res && push_n(&print_stack, cont,2);
369
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53012 if (!res) {
370 return EMIT_FAILED;
371 }
372 53012 break;
373 }
374 62606 case CONTINUE_LIST: {
375 62606 int res = 1;
376 62606 lbm_pop(&print_stack, &curr);
377
378
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62606 if (lbm_type_of(curr) == LBM_TYPE_SYMBOL &&
379 curr == ENC_SYM_NIL) {
380 62516 break;
381 }
382
383 62606 lbm_value car_val = lbm_car(curr);
384 62606 lbm_value cdr_val = lbm_cdr(curr);
385
386 62606 r = print_emit_char(chan, ' ');
387
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62606 if (r != EMIT_OK) {
388 90 return r;
389 }
390
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106749 if (lbm_type_of(cdr_val) == LBM_TYPE_CONS ||
391 44233 lbm_type_of(cdr_val) == (LBM_TYPE_CONS | LBM_PTR_TO_CONSTANT_BIT)) {
392 18291 lbm_value cont[2] = {cdr_val, CONTINUE_LIST};
393
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18291 res = res && push_n(&print_stack, cont, 2);
394
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44225 } else if (lbm_type_of(cdr_val) == LBM_TYPE_SYMBOL &&
395 cdr_val == ENC_SYM_NIL) {
396
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44220 res = res && lbm_push(&print_stack, END_LIST);
397 } else {
398 5 lbm_value cont[4] = {END_LIST, cdr_val, PRINT, PRINT_DOT};
399
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5 res = res && push_n(&print_stack, cont, 4);
400 }
401 62516 lbm_value cont[2] = {car_val, PRINT};
402
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62516 res = res && push_n(&print_stack, cont, 2);
403
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62516 if (!res) {
404 return EMIT_FAILED;
405 }
406 62516 break;
407 }
408 52708 case END_LIST:
409 52708 r = print_emit_char(chan, ')');
410
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52708 if (r != EMIT_OK) return r;
411 52652 break;
412 case PRINT_SPACE:
413 r = print_emit_char(chan, ' ');
414 if (r != EMIT_OK) return r;
415 break;
416 3902 case PRINT_DOT:
417 3902 r = print_emit_string(chan, " . ");
418
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3902 if (r != EMIT_OK) return r;
419 3874 break;
420 456421 case PRINT:
421 456421 lbm_pop(&print_stack, &curr);
422
423 456421 lbm_type t = lbm_type_of(curr);
424
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456421 if (lbm_is_ptr(curr))
425 122933 t = t & LBM_PTR_TO_CONSTANT_MASK; // print constants normally
426
427 switch(t) {
428 53016 case LBM_TYPE_CONS: {
429
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53016 if (lbm_dec_ptr(curr) == LBM_PTR_NULL) {
430 print_emit_string(chan, " LBM_NULL ");
431 } else {
432 53016 lbm_value cont[2] = {curr, START_LIST};
433 53016 int res = push_n(&print_stack, cont, 2);
434
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53016 if (!res) {
435 print_emit_string(chan," ...");
436 return EMIT_OK;
437 }
438 }
439 53016 break;
440 }
441 268424 case LBM_TYPE_SYMBOL:
442 268424 r = print_emit_symbol(chan, curr);
443 268424 break;
444 42446 case LBM_TYPE_I:
445 42446 r = print_emit_i(chan, lbm_dec_i(curr));
446 42446 break;
447 21610 case LBM_TYPE_U:
448 21610 r = print_emit_u(chan, lbm_dec_u(curr), true);
449 21610 break;
450 1008 case LBM_TYPE_CHAR:
451 1008 r = print_emit_byte(chan, (uint8_t)lbm_dec_char(curr), true);
452 1008 break;
453 432 case LBM_TYPE_FLOAT:
454 432 r = print_emit_float(chan, lbm_dec_float(curr), true);
455 432 break;
456 339 case LBM_TYPE_DOUBLE:
457 339 r = print_emit_double(chan, lbm_dec_double(curr), true);
458 339 break;
459 1130 case LBM_TYPE_U32:
460 1130 r = print_emit_u32(chan, lbm_dec_u32(curr), true);
461 1130 break;
462 112 case LBM_TYPE_I32:
463 112 r = print_emit_i32(chan, lbm_dec_i32(curr), true);
464 112 break;
465 112 case LBM_TYPE_U64:
466 112 r = print_emit_u64(chan, lbm_dec_u64(curr), true);
467 112 break;
468 112 case LBM_TYPE_I64:
469 112 r = print_emit_i64(chan, lbm_dec_i64(curr), true);
470 112 break;
471 50874 case LBM_CONTINUATION_INTERNAL_TYPE:
472 50874 r = print_emit_continuation(chan, curr);
473 50874 break;
474 2 case LBM_TYPE_CUSTOM:
475 2 r = print_emit_custom(chan, curr);
476 2 break;
477 12108 case LBM_TYPE_CHANNEL:
478 12108 r = print_emit_channel(chan, curr);
479 12108 break;
480 4455 case LBM_TYPE_ARRAY:
481 4455 r = print_emit_bytearray(chan, curr);
482 4455 break;
483 56 case LBM_TYPE_DEFRAG_MEM:
484 56 r = print_emit_defrag_mem(chan, curr);
485 56 break;
486 185 case LBM_TYPE_LISPARRAY: {
487 185 lbm_value cont[2] = {curr, START_ARRAY};
488 185 int res = push_n(&print_stack, cont, 2);
489
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185 if (!res) {
490 print_emit_string(chan, " ...");
491 return EMIT_OK;
492 }
493 185 break;
494 }
495 default:
496 return EMIT_FAILED;
497 }
498 }
499 }
500 336288 return r;
501 }
502
503 336466 int lbm_print_value(char *buf, unsigned int len, lbm_value v) {
504
505 lbm_string_channel_state_t st;
506 lbm_char_channel_t chan;
507
508 336466 memset(buf, 0, len);
509 336466 lbm_create_string_char_channel_size(&st, &chan, buf, len);
510
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336466 if (lbm_print_internal(&chan,v) == EMIT_OK)
511 335994 return 1;
512 472 return 0;
513 }
514