a68g.c
1 //! @file a68g.c
2 //! @author J. Marcel van der Veer
3
4 //! @section Copyright
5 //!
6 //! This file is part of Algol68G - an Algol 68 compiler-interpreter.
7 //! Copyright 2001-2025 J. Marcel van der Veer [algol68g@xs4all.nl].
8
9 //! @section License
10 //!
11 //! This program is free software; you can redistribute it and/or modify it
12 //! under the terms of the GNU General Public License as published by the
13 //! Free Software Foundation; either version 3 of the License, or
14 //! (at your option) any later version.
15 //!
16 //! This program is distributed in the hope that it will be useful, but
17 //! WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
18 //! or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19 //! more details. You should have received a copy of the GNU General Public
20 //! License along with this program. If not, see [http://www.gnu.org/licenses/].
21
22 //! @section Synopsis
23 //!
24 //! Algol 68 Genie main driver.
25
26 // --assertions, --noassertions, switch elaboration of assertions on or off.
27 // --backtrace, --nobacktrace, switch stack backtracing in case of a runtime error.
28 // --boldstropping, set stropping mode to bold stropping.
29 // --brackets, consider [ .. ] and { .. } as equivalent to ( .. ).
30 // --check, --norun, check syntax only, interpreter does not start.
31 // --clock, report execution time excluding compilation time.
32 // --compile, compile source file.
33 // --debug, --monitor, start execution in the debugger and debug in case of runtime error.
34 // --echo string, echo 'string' to standard output.
35 // --execute unit, execute algol 68 unit 'unit'.
36 // --exit, --, ignore next options.
37 // --extensive, make extensive listing.
38 // --file string, accept string as generic filename.
39 // --frame 'number', set frame stack size to 'number'.
40 // --handles 'number', set handle space size to 'number'.
41 // --heap 'number', set heap size to 'number'.
42 // --keep, --nokeep, switch object file deletion off or on.
43 // --listing, make concise listing.
44 // --moids, make overview of moids in listing file.
45 // -O0, -O1, -O2, -O3, switch compilation on and pass option to back-end C compiler.
46 // --optimise, --nooptimise, switch compilation on or off.
47 // --pedantic, equivalent to --warnings --portcheck.
48 // --portcheck, --noportcheck, switch portability warnings on or off.
49 // --pragmats, --nopragmats, switch elaboration of pragmat items on or off.
50 // --precision 'number', set precision for long long modes to 'number' significant digits.
51 // --preludelisting, make a listing of preludes.
52 // --pretty-print, pretty-print the source file.
53 // --print unit, print value yielded by algol 68 unit 'unit'.
54 // --quiet, suppresses all warning diagnostics.
55 // --quotestropping, set stropping mode to quote stropping.
56 // --reductions, print parser reductions.
57 // --run, override --check/--norun options.
58 // --rerun, run using already compiled code.
59 // --script, set next option as source file name; pass further options to algol 68 program.
60 // --source, --nosource, switch listing of source lines in listing file on or off.
61 // --stack 'number', set expression stack size to 'number'.
62 // --statistics, print statistics in listing file.
63 // --strict, disable most extensions to Algol 68 syntax.
64 // --timelimit 'number', interrupt the interpreter after 'number' seconds.
65 // --trace, --notrace, switch tracing of a running program on or off.
66 // --tree, --notree, switch syntax tree listing in listing file on or off.
67 // --unused, make an overview of unused tags in the listing file.
68 // --verbose, inform on program actions.
69 // --version, state version of the running copy.
70 // --warnings, --nowarnings, switch warning diagnostics on or off.
71 // --xref, --noxref, switch cross reference in the listing file on or off.
72
73 #include "a68g.h"
74 #include "a68g-listing.h"
75 #include "a68g-mp.h"
76 #include "a68g-optimiser.h"
77 #include "a68g-options.h"
78 #include "a68g-parser.h"
79 #include "a68g-postulates.h"
80 #include "a68g-genie.h"
81 #include "a68g-prelude.h"
82 #include "a68g-prelude-mathlib.h"
83
84 #if defined (HAVE_MATHLIB)
85 #include <Rmath.h>
86 #endif
87
88 #if defined (HAVE_CURL)
89 #include <curl/curl.h>
90 #endif
91
92 GLOBALS_T common;
93
94 #define EXTENSIONS 13
95 static char *extensions[EXTENSIONS] = {
96 NO_TEXT,
97 ".a68", ".A68",
98 ".a68g", ".A68G",
99 ".alg", ".ALG",
100 ".algol", ".ALGOL",
101 ".algol68", ".ALGOL68",
102 ".algol68g", ".ALGOL68G"
103 };
104
105 void compiler_interpreter (void);
106
107 //! @brief Verbose statistics, only useful when debugging a68g.
108
109 void verbosity (void)
110 {
111 #if defined (A68_DEBUG)
112 ;
113 #else
114 ;
115 #endif
116 }
117
118 //! @brief State license of running a68g image.
119
120 void state_license (FILE_T f)
121 {
122 #define PR(s)\
123 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "%s\n", (s)) >= 0);\
124 WRITE (f, A68 (output_line));
125 if (f == A68_STDOUT) {
126 io_close_tty_line ();
127 }
128 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "Algol 68 Genie %s\n", PACKAGE_VERSION) >= 0);
129 WRITE (f, A68 (output_line));
130 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "Copyright 2001-2025 %s.\n", PACKAGE_BUGREPORT) >= 0);
131 WRITE (f, A68 (output_line));
132 PR ("");
133 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "This is free software covered by the GNU General Public License.\n") >= 0);
134 WRITE (f, A68 (output_line));
135 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "There is ABSOLUTELY NO WARRANTY for Algol 68 Genie;\n") >= 0);
136 WRITE (f, A68 (output_line));
137 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n") >= 0);
138 WRITE (f, A68 (output_line));
139 PR ("See the GNU General Public License for more details.");
140 PR ("");
141 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "Please report bugs to %s.\n", PACKAGE_BUGREPORT) >= 0);
142 WRITE (f, A68 (output_line));
143 #undef PR
144 }
145
146 //! @brief State version of running a68g image.
147
148 void state_version (FILE_T f)
149 {
150 #define PR(s)\
151 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "%s\n", (s)) >= 0);\
152 WRITE (f, A68 (output_line));
153 if (f == A68_STDOUT) {
154 io_close_tty_line ();
155 }
156 state_license (f);
157 PR ("");
158 #if defined (BUILD_WIN32)
159 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "WIN32 executable\n") >= 0);
160 WRITE (f, A68 (output_line));
161 WRITELN (f, "");
162 #endif
163 #if (A68_LEVEL >= 3)
164 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With hardware support for long modes\n") >= 0);
165 WRITE (f, A68 (output_line));
166 #endif
167 #if defined (BUILD_A68_COMPILER)
168 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With plugin-compilation support\n") >= 0);
169 WRITE (f, A68 (output_line));
170 #endif
171 #if defined (BUILD_PARALLEL_CLAUSE)
172 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With parallel-clause support\n") >= 0);
173 WRITE (f, A68 (output_line));
174 #endif
175 #if defined (HAVE_POSTGRESQL)
176 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With PostgreSQL support\n") >= 0);
177 WRITE (f, A68 (output_line));
178 #endif
179 #if defined (HAVE_CURL)
180 curl_version_info_data *data = curl_version_info(CURLVERSION_NOW);
181 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With curl %s\n", data->version) >= 0);
182 WRITE (f, A68 (output_line));
183 #endif
184 #if defined (HAVE_GNU_MPFR)
185 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With GNU MP %s\n", gmp_version) >= 0);
186 WRITE (f, A68 (output_line));
187 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With GNU MPFR %s\n", mpfr_get_version ()) >= 0);
188 WRITE (f, A68 (output_line));
189 #endif
190 #if defined (HAVE_MATHLIB)
191 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With mathlib from R %s\n", R_VERSION_STRING) >= 0);
192 WRITE (f, A68 (output_line));
193 #endif
194 #if defined (HAVE_GSL)
195 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With GNU Scientific Library %s\n", GSL_VERSION) >= 0);
196 WRITE (f, A68 (output_line));
197 #endif
198 #if defined (HAVE_GNU_PLOTUTILS)
199 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With GNU plotutils %s\n", PL_LIBPLOT_VER_STRING) >= 0);
200 WRITE (f, A68 (output_line));
201 #endif
202 #if defined (HAVE_CURSES)
203 #if defined (NCURSES_VERSION)
204 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With ncurses %s\n", NCURSES_VERSION) >= 0);
205 #else
206 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "With curses support\n") >= 0);
207 #endif
208 WRITE (f, A68 (output_line));
209 #endif
210 #if defined (_CS_GNU_LIBC_VERSION) && defined (BUILD_UNIX)
211 if (confstr (_CS_GNU_LIBC_VERSION, A68 (input_line), BUFFER_SIZE) > (size_t) 0) {
212 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "GNU libc version %s\n", A68 (input_line)) >= 0);
213 WRITE (f, A68 (output_line));
214 }
215 #if (defined (BUILD_PARALLEL_CLAUSE) && defined (_CS_GNU_LIBPTHREAD_VERSION))
216 if (confstr (_CS_GNU_LIBPTHREAD_VERSION, A68 (input_line), BUFFER_SIZE) > (size_t) 0) {
217 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "GNU libpthread version %s\n", A68 (input_line)) >= 0);
218 WRITE (f, A68 (output_line));
219 }
220 #endif
221 #endif
222 #define RSIZE(n) (unt) (sizeof (n) / sizeof (int))
223 #if defined (BUILD_A68_COMPILER) && defined (C_COMPILER)
224 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "Build level %d.%x%x%x%x %s %s\n", A68_LEVEL, RSIZE (INT_T), RSIZE (REAL_T), RSIZE (MP_INT_T), RSIZE (MP_REAL_T), C_COMPILER, __DATE__) >= 0);
225 #else
226 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "Build level %d.%x%x%x%x %s\n", A68_LEVEL, RSIZE (INT_T), RSIZE (REAL_T), RSIZE (MP_INT_T), RSIZE (MP_REAL_T), __DATE__) >= 0);
227 #endif
228 #undef RSIZE
229 WRITE (f, A68 (output_line));
230 #undef PR
231 }
232
233 //! @brief Give brief help if someone types 'a68g --help'.
234
235 void online_help (FILE_T f)
236 {
237 if (f == A68_STDOUT) {
238 io_close_tty_line ();
239 }
240 state_license (f);
241 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "Usage: %s [options | filename]", A68 (a68g_cmd_name)) >= 0);
242 WRITELN (f, A68 (output_line));
243 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "For help: %s --apropos [keyword]", A68 (a68g_cmd_name)) >= 0);
244 WRITELN (f, A68 (output_line));
245 }
246
247 //! @brief Start book keeping for a phase.
248
249 void announce_phase (char *t)
250 {
251 if (OPTION_VERBOSE (&A68_JOB)) {
252 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "%s: %s", A68 (a68g_cmd_name), t) >= 0);
253 io_close_tty_line ();
254 WRITE (A68_STDOUT, A68 (output_line));
255 }
256 }
257
258 //! @brief Test extension and strip.
259
260 BOOL_T strip_extension (char *ext)
261 {
262 if (ext == NO_TEXT) {
263 return A68_FALSE;
264 }
265 int nlen = (int) strlen (FILE_SOURCE_NAME (&A68_JOB)), xlen = (int) strlen (ext);
266 if (nlen > xlen && strcmp (&(FILE_SOURCE_NAME (&A68_JOB)[nlen - xlen]), ext) == 0) {
267 char *fn = (char *) get_heap_space ((size_t) (nlen + 1));
268 a68g_bufcpy (fn, FILE_SOURCE_NAME (&A68_JOB), nlen);
269 fn[nlen - xlen] = NULL_CHAR;
270 a68g_free (FILE_GENERIC_NAME (&A68_JOB));
271 FILE_GENERIC_NAME (&A68_JOB) = new_string (fn, NO_TEXT);
272 a68g_free (fn);
273 return A68_TRUE;
274 } else {
275 return A68_FALSE;
276 }
277 }
278
279 //! @brief Try opening with an extension.
280
281 void open_with_extensions (void)
282 {
283 FILE_SOURCE_FD (&A68_JOB) = -1;
284 for (int k = 0; k < EXTENSIONS && FILE_SOURCE_FD (&A68_JOB) == -1; k++) {
285 int len;
286 char *fn = NULL;
287 if (extensions[k] == NO_TEXT) {
288 len = (int) strlen (FILE_INITIAL_NAME (&A68_JOB)) + 1;
289 fn = (char *) get_heap_space ((size_t) len);
290 a68g_bufcpy (fn, FILE_INITIAL_NAME (&A68_JOB), len);
291 } else {
292 len = (int) strlen (FILE_INITIAL_NAME (&A68_JOB)) + (int) strlen (extensions[k]) + 1;
293 fn = (char *) get_heap_space ((size_t) len);
294 a68g_bufcpy (fn, FILE_INITIAL_NAME (&A68_JOB), len);
295 a68g_bufcat (fn, extensions[k], len);
296 }
297 FILE_SOURCE_FD (&A68_JOB) = open (fn, O_RDONLY | O_BINARY);
298 if (FILE_SOURCE_FD (&A68_JOB) != -1) {
299 BOOL_T cont = A68_TRUE;
300 a68g_free (FILE_SOURCE_NAME (&A68_JOB));
301 a68g_free (FILE_GENERIC_NAME (&A68_JOB));
302 FILE_SOURCE_NAME (&A68_JOB) = new_string (fn, NO_TEXT);
303 FILE_GENERIC_NAME (&A68_JOB) = new_string (a68g_basename (fn), NO_TEXT);
304 FILE_PATH (&A68_JOB) = new_string (a68g_dirname (fn), NO_TEXT);
305 for (int l = 0; l < EXTENSIONS && cont; l++) {
306 if (strip_extension (extensions[l])) {
307 cont = A68_FALSE;
308 }
309 }
310 }
311 a68g_free (fn);
312 }
313 }
314
315 //! @brief Remove a regular file.
316
317 void a68g_rm (char *fn)
318 {
319 struct stat path_stat;
320 if (stat (fn, &path_stat) == 0) {
321 if (S_ISREG (path_stat.st_mode)) {
322 ABEND (remove (fn) != 0, ERROR_ACTION, FILE_OBJECT_NAME (&A68_JOB));
323 }
324 }
325 }
326
327 //! @brief Drives compilation and interpretation.
328
329 void compiler_interpreter (void)
330 {
331 BOOL_T emitted = A68_FALSE;
332 TREE_LISTING_SAFE (&A68_JOB) = A68_FALSE;
333 CROSS_REFERENCE_SAFE (&A68_JOB) = A68_FALSE;
334 A68 (in_execution) = A68_FALSE;
335 A68 (new_nodes) = 0;
336 A68 (new_modes) = 0;
337 A68 (new_postulates) = 0;
338 A68 (new_node_infos) = 0;
339 A68 (new_genie_infos) = 0;
340 A68 (symbol_table_count) = 0;
341 A68 (mode_count) = 0;
342 A68 (node_register) = NO_REF;
343 init_postulates ();
344 A68 (do_confirm_exit) = A68_TRUE;
345 A68 (f_entry) = NO_NODE;
346 A68 (global_level) = 0;
347 A68 (max_lex_lvl) = 0;
348 A68_PARSER (stop_scanner) = A68_FALSE;
349 A68_PARSER (read_error) = A68_FALSE;
350 A68_PARSER (no_preprocessing) = A68_FALSE;
351 A68_PARSER (reductions) = 0;
352 A68_PARSER (tag_number) = 0;
353 A68 (curses_mode) = A68_FALSE;
354 A68 (top_soid_list) = NO_SOID;
355 A68 (max_simplout_size) = 0;
356 A68_MON (in_monitor) = A68_FALSE;
357 A68_MP (mp_ln_scale_size) = -1;
358 A68_MP (mp_ln_10_size) = -1;
359 A68_MP (mp_gamma_size) = -1;
360 A68_MP (mp_one_size) = -1;
361 A68_MP (mp_pi_size) = -1;
362 // File set-up.
363 SCAN_ERROR (FILE_INITIAL_NAME (&A68_JOB) == NO_TEXT, NO_LINE, NO_TEXT, ERROR_NO_SOURCE_FILE);
364 FILE_BINARY_OPENED (&A68_JOB) = A68_FALSE;
365 FILE_BINARY_WRITEMOOD (&A68_JOB) = A68_TRUE;
366 FILE_PLUGIN_OPENED (&A68_JOB) = A68_FALSE;
367 FILE_PLUGIN_WRITEMOOD (&A68_JOB) = A68_TRUE;
368 FILE_LISTING_OPENED (&A68_JOB) = A68_FALSE;
369 FILE_LISTING_WRITEMOOD (&A68_JOB) = A68_TRUE;
370 FILE_OBJECT_OPENED (&A68_JOB) = A68_FALSE;
371 FILE_OBJECT_WRITEMOOD (&A68_JOB) = A68_TRUE;
372 FILE_PRETTY_OPENED (&A68_JOB) = A68_FALSE;
373 FILE_SCRIPT_OPENED (&A68_JOB) = A68_FALSE;
374 FILE_SCRIPT_WRITEMOOD (&A68_JOB) = A68_FALSE;
375 FILE_SOURCE_OPENED (&A68_JOB) = A68_FALSE;
376 FILE_SOURCE_WRITEMOOD (&A68_JOB) = A68_FALSE;
377 FILE_DIAGS_OPENED (&A68_JOB) = A68_FALSE;
378 FILE_DIAGS_WRITEMOOD (&A68_JOB) = A68_TRUE;
379 // Open the source file.
380 // Open it for binary reading for systems that require so (Win32).
381 // Accept various silent extensions.
382 errno = 0;
383 FILE_SOURCE_NAME (&A68_JOB) = NO_TEXT;
384 FILE_GENERIC_NAME (&A68_JOB) = NO_TEXT;
385 open_with_extensions ();
386 if (FILE_SOURCE_NAME (&A68_JOB) == NO_TEXT) {
387 errno = ENOENT;
388 SCAN_ERROR (A68_TRUE, NO_LINE, NO_TEXT, ERROR_SOURCE_FILE_OPEN);
389 } else {
390 struct stat path_stat;
391 errno = 0;
392 SCAN_ERROR (stat (FILE_SOURCE_NAME (&A68_JOB), &path_stat) != 0, NO_LINE, NO_TEXT, ERROR_SOURCE_FILE_OPEN);
393 SCAN_ERROR (S_ISDIR (path_stat.st_mode), NO_LINE, NO_TEXT, ERROR_IS_DIRECTORY);
394 SCAN_ERROR (!S_ISREG (path_stat.st_mode), NO_LINE, NO_TEXT, ERROR_NO_REGULAR_FILE);
395 }
396 if (FILE_SOURCE_FD (&A68_JOB) == -1) {
397 scan_error (NO_LINE, NO_TEXT, ERROR_SOURCE_FILE_OPEN);
398 }
399 ABEND (FILE_SOURCE_NAME (&A68_JOB) == NO_TEXT, ERROR_INTERNAL_CONSISTENCY, __func__);
400 ABEND (FILE_GENERIC_NAME (&A68_JOB) == NO_TEXT, ERROR_INTERNAL_CONSISTENCY, __func__);
401 // Object file.
402 int len = 1 + (int) strlen (FILE_GENERIC_NAME (&A68_JOB)) + (int) strlen (OBJECT_EXTENSION);
403 FILE_OBJECT_NAME (&A68_JOB) = (char *) get_heap_space ((size_t) len);
404 a68g_bufcpy (FILE_OBJECT_NAME (&A68_JOB), FILE_GENERIC_NAME (&A68_JOB), len);
405 a68g_bufcat (FILE_OBJECT_NAME (&A68_JOB), OBJECT_EXTENSION, len);
406 // Binary.
407 len = 1 + (int) strlen (FILE_GENERIC_NAME (&A68_JOB)) + (int) strlen (PLUGIN_EXTENSION);
408 FILE_BINARY_NAME (&A68_JOB) = (char *) get_heap_space ((size_t) len);
409 a68g_bufcpy (FILE_BINARY_NAME (&A68_JOB), FILE_GENERIC_NAME (&A68_JOB), len);
410 a68g_bufcat (FILE_BINARY_NAME (&A68_JOB), BINARY_EXTENSION, len);
411 // Library file.
412 len = 1 + (int) strlen (FILE_GENERIC_NAME (&A68_JOB)) + (int) strlen (PLUGIN_EXTENSION);
413 FILE_PLUGIN_NAME (&A68_JOB) = (char *) get_heap_space ((size_t) len);
414 a68g_bufcpy (FILE_PLUGIN_NAME (&A68_JOB), FILE_GENERIC_NAME (&A68_JOB), len);
415 a68g_bufcat (FILE_PLUGIN_NAME (&A68_JOB), PLUGIN_EXTENSION, len);
416 // Listing file.
417 len = 1 + (int) strlen (FILE_GENERIC_NAME (&A68_JOB)) + (int) strlen (LISTING_EXTENSION);
418 FILE_LISTING_NAME (&A68_JOB) = (char *) get_heap_space ((size_t) len);
419 a68g_bufcpy (FILE_LISTING_NAME (&A68_JOB), FILE_GENERIC_NAME (&A68_JOB), len);
420 a68g_bufcat (FILE_LISTING_NAME (&A68_JOB), LISTING_EXTENSION, len);
421 // Pretty file.
422 len = 1 + (int) strlen (FILE_GENERIC_NAME (&A68_JOB)) + (int) strlen (PRETTY_EXTENSION);
423 FILE_PRETTY_NAME (&A68_JOB) = (char *) get_heap_space ((size_t) len);
424 a68g_bufcpy (FILE_PRETTY_NAME (&A68_JOB), FILE_GENERIC_NAME (&A68_JOB), len);
425 a68g_bufcat (FILE_PRETTY_NAME (&A68_JOB), PRETTY_EXTENSION, len);
426 // Script file.
427 len = 1 + (int) strlen (FILE_GENERIC_NAME (&A68_JOB)) + (int) strlen (SCRIPT_EXTENSION);
428 FILE_SCRIPT_NAME (&A68_JOB) = (char *) get_heap_space ((size_t) len);
429 a68g_bufcpy (FILE_SCRIPT_NAME (&A68_JOB), FILE_GENERIC_NAME (&A68_JOB), len);
430 a68g_bufcat (FILE_SCRIPT_NAME (&A68_JOB), SCRIPT_EXTENSION, len);
431 // Parser.
432 a68g_parser ();
433 if (TOP_NODE (&A68_JOB) == NO_NODE) {
434 errno = ECANCELED;
435 ABEND (A68_TRUE, ERROR_SOURCE_FILE_EMPTY, NO_TEXT);
436 }
437 // Portability checker.
438 if (ERROR_COUNT (&A68_JOB) == 0) {
439 announce_phase ("portability checker");
440 portcheck (TOP_NODE (&A68_JOB));
441 verbosity ();
442 }
443 // Finalise syntax tree.
444 if (ERROR_COUNT (&A68_JOB) == 0) {
445 int num = 0;
446 renumber_nodes (TOP_NODE (&A68_JOB), &num);
447 NEST (TABLE (TOP_NODE (&A68_JOB))) = A68 (symbol_table_count) = 3;
448 reset_symbol_table_nest_count (TOP_NODE (&A68_JOB));
449 verbosity ();
450 }
451 if (A68_MP (varying_mp_digits) > width_to_mp_digits (MP_MAX_DECIMALS)) {
452 diagnostic (A68_WARNING, NO_NODE, WARNING_PRECISION, NO_LINE, 0, A68_MP (varying_mp_digits) * LOG_MP_RADIX);
453 }
454 // Plugin code generation and compilation.
455 if (ERROR_COUNT (&A68_JOB) == 0 && OPTION_OPT_LEVEL (&A68_JOB) > NO_OPTIMISE) {
456 announce_phase ("plugin-compiler");
457 plugin_driver_code ();
458 #if defined (BUILD_A68_COMPILER)
459 emitted = A68_TRUE;
460 if (ERROR_COUNT (&A68_JOB) == 0 && !OPTION_RUN_SCRIPT (&A68_JOB)) {
461 plugin_driver_compile ();
462 }
463 verbosity ();
464 #else
465 emitted = A68_FALSE;
466 diagnostic (A68_WARNING | A68_FORCE_DIAGNOSTICS, TOP_NODE (&A68_JOB), WARNING_OPTIMISATION);
467 #endif
468 }
469 // Indenter.
470 if (ERROR_COUNT (&A68_JOB) == 0 && OPTION_PRETTY (&A68_JOB)) {
471 announce_phase ("indenter");
472 indenter (&A68_JOB);
473 verbosity ();
474 }
475 // Interpreter initialisation.
476 diagnostics_to_terminal (TOP_LINE (&A68_JOB), A68_ALL_DIAGNOSTICS);
477 if (OPTION_DEBUG (&A68_JOB)) {
478 state_license (A68_STDOUT);
479 }
480 if (ERROR_COUNT (&A68_JOB) == 0 && OPTION_COMPILE (&A68_JOB) == A68_FALSE &&
481 (OPTION_CHECK_ONLY (&A68_JOB) ? OPTION_RUN (&A68_JOB) : A68_TRUE)) {
482 announce_phase ("genie");
483 GetRNGstate ();
484 A68 (f_entry) = TOP_NODE (&A68_JOB);
485 A68 (close_tty_on_exit) = A68_FALSE;
486 #if defined (BUILD_A68_COMPILER)
487 plugin_driver_genie ();
488 #else
489 genie ((void *) NULL);
490 #endif
491 // Free heap allocated by genie.
492 genie_free (TOP_NODE (&A68_JOB));
493 // Store seed for rng.
494 announce_phase ("store rng state");
495 PutRNGstate ();
496 // Normal end of program.
497 diagnostics_to_terminal (TOP_LINE (&A68_JOB), A68_RUNTIME_ERROR);
498 if (OPTION_DEBUG (&A68_JOB) || OPTION_TRACE (&A68_JOB) || OPTION_CLOCK (&A68_JOB)) {
499 ASSERT (a68g_bufprt (A68 (output_line), SNPRINTF_SIZE, "\nGenie finished in %.2f seconds\n", seconds () - A68 (cputime_0)) >= 0);
500 WRITE (A68_STDOUT, A68 (output_line));
501 }
502 verbosity ();
503 }
504 // Setting up listing file.
505 announce_phase ("write listing");
506 if (OPTION_MOID_LISTING (&A68_JOB) || OPTION_TREE_LISTING (&A68_JOB) || OPTION_SOURCE_LISTING (&A68_JOB) || OPTION_OBJECT_LISTING (&A68_JOB) || OPTION_STATISTICS_LISTING (&A68_JOB)) {
507 FILE_LISTING_FD (&A68_JOB) = open (FILE_LISTING_NAME (&A68_JOB), O_WRONLY | O_CREAT | O_TRUNC, A68_PROTECTION);
508 ABEND (FILE_LISTING_FD (&A68_JOB) == -1, ERROR_ACTION, __func__);
509 FILE_LISTING_OPENED (&A68_JOB) = A68_TRUE;
510 } else {
511 FILE_LISTING_OPENED (&A68_JOB) = A68_FALSE;
512 }
513 // Write listing.
514 if (FILE_LISTING_OPENED (&A68_JOB)) {
515 A68 (heap_is_fluid) = A68_TRUE;
516 write_listing_header ();
517 write_source_listing ();
518 write_tree_listing ();
519 if (ERROR_COUNT (&A68_JOB) == 0 && OPTION_OPT_LEVEL (&A68_JOB) > 0) {
520 write_object_listing ();
521 }
522 write_listing ();
523 ASSERT (close (FILE_LISTING_FD (&A68_JOB)) == 0);
524 FILE_LISTING_OPENED (&A68_JOB) = A68_FALSE;
525 verbosity ();
526 }
527 // Cleaning up the intermediate files.
528 #if defined (BUILD_A68_COMPILER)
529 announce_phase ("clean up intermediate files");
530 plugin_driver_clean (emitted);
531 #else
532 (void) emitted;
533 #endif
534 }
535
536 //! @brief Exit a68g in an orderly manner.
537
538 void a68g_exit (int code)
539 {
540 announce_phase ("exit");
541 #if defined (HAVE_GNU_MPFR)
542 mpfr_free_cache ();
543 #endif
544 // Close unclosed files, remove temp files.
545 free_file_entries ();
546 // Close the terminal.
547 if (A68 (close_tty_on_exit) || OPTION_REGRESSION_TEST (&A68_JOB)) {
548 io_close_tty_line ();
549 } else if (OPTION_VERBOSE (&A68_JOB)) {
550 io_close_tty_line ();
551 }
552 #if defined (HAVE_CURSES)
553 // "curses" might still be open if it was not closed from A68, or the program
554 // was interrupted, or a runtime error occured. That wreaks havoc on your
555 // terminal.
556 genie_curses_end (NO_NODE);
557 #endif
558 // Clean up stale things.
559 free_syntax_tree (TOP_NODE (&A68_JOB));
560 free_option_list (OPTION_LIST (&A68_JOB));
561 a68g_free (A68 (node_register));
562 a68g_free (A68 (options));
563 discard_heap ();
564 a68g_free (FILE_PATH (&A68_JOB));
565 a68g_free (FILE_INITIAL_NAME (&A68_JOB));
566 a68g_free (FILE_GENERIC_NAME (&A68_JOB));
567 a68g_free (FILE_SOURCE_NAME (&A68_JOB));
568 a68g_free (FILE_LISTING_NAME (&A68_JOB));
569 a68g_free (FILE_OBJECT_NAME (&A68_JOB));
570 a68g_free (FILE_PLUGIN_NAME (&A68_JOB));
571 a68g_free (FILE_BINARY_NAME (&A68_JOB));
572 a68g_free (FILE_PRETTY_NAME (&A68_JOB));
573 a68g_free (FILE_SCRIPT_NAME (&A68_JOB));
574 a68g_free (FILE_DIAGS_NAME (&A68_JOB));
575 a68g_free (A68_MP (mp_one));
576 a68g_free (A68_MP (mp_pi));
577 a68g_free (A68_MP (mp_half_pi));
578 a68g_free (A68_MP (mp_two_pi));
579 a68g_free (A68_MP (mp_sqrt_two_pi));
580 a68g_free (A68_MP (mp_sqrt_pi));
581 a68g_free (A68_MP (mp_ln_pi));
582 a68g_free (A68_MP (mp_180_over_pi));
583 a68g_free (A68_MP (mp_pi_over_180));
584 exit (code);
585 }
586
587 //! @brief Main entry point.
588
589 int main (int argc, char *argv[])
590 {
591 BYTE_T stack_offset; // Leave this here!
592 A68 (argc) = argc;
593 A68 (argv) = argv;
594 A68 (close_tty_on_exit) = A68_TRUE;
595 FILE_DIAGS_FD (&A68_JOB) = -1;
596 // Get command name and discard path.
597 a68g_bufcpy (A68 (a68g_cmd_name), argv[0], BUFFER_SIZE);
598 for (int k = (int) strlen (A68 (a68g_cmd_name)) - 1; k >= 0; k--) {
599 #if defined (BUILD_WIN32)
600 char delim = '\\';
601 #else
602 char delim = '/';
603 #endif
604 if (A68 (a68g_cmd_name)[k] == delim) {
605 MOVE (&A68 (a68g_cmd_name)[0], &A68 (a68g_cmd_name)[k + 1], (int) strlen (A68 (a68g_cmd_name)) - k + 1);
606 k = -1;
607 }
608 }
609 // Try to read maximum line width on the terminal,
610 // used to pretty print diagnostics to same.
611 a68g_getty (&A68 (term_heigth), &A68 (term_width));
612 // Determine clock resolution.
613 {
614 clock_t t0 = clock (), t1;
615 do {
616 t1 = clock ();
617 } while (t1 == t0);
618 A68 (clock_res) = (t1 - t0) / (clock_t) CLOCKS_PER_SEC;
619 }
620 // Set the main thread id.
621 #if defined (BUILD_PARALLEL_CLAUSE)
622 A68_PAR (main_thread_id) = pthread_self ();
623 #endif
624 A68 (heap_is_fluid) = A68_TRUE;
625 A68 (system_stack_offset) = &stack_offset;
626 init_file_entries ();
627 if (!setjmp (RENDEZ_VOUS (&A68_JOB))) {
628 init_tty ();
629 // Initialise option handling.
630 init_options ();
631 SOURCE_SCAN (&A68_JOB) = 1;
632 default_options (&A68_JOB);
633 default_mem_sizes (1);
634 // Initialise core.
635 A68_STACK = NO_BYTE;
636 A68_HEAP = NO_BYTE;
637 A68_HANDLES = NO_BYTE;
638 get_stack_size ();
639 // Well, let's start.
640 TOP_REFINEMENT (&A68_JOB) = NO_REFINEMENT;
641 FILE_INITIAL_NAME (&A68_JOB) = NO_TEXT;
642 FILE_GENERIC_NAME (&A68_JOB) = NO_TEXT;
643 FILE_SOURCE_NAME (&A68_JOB) = NO_TEXT;
644 FILE_LISTING_NAME (&A68_JOB) = NO_TEXT;
645 FILE_OBJECT_NAME (&A68_JOB) = NO_TEXT;
646 FILE_PLUGIN_NAME (&A68_JOB) = NO_TEXT;
647 FILE_BINARY_NAME (&A68_JOB) = NO_TEXT;
648 FILE_PRETTY_NAME (&A68_JOB) = NO_TEXT;
649 FILE_SCRIPT_NAME (&A68_JOB) = NO_TEXT;
650 FILE_DIAGS_NAME (&A68_JOB) = NO_TEXT;
651 // Options are processed here.
652 read_rc_options ();
653 read_env_options ();
654 // Posix copies arguments from the command line.
655 if (argc <= 1) {
656 online_help (A68_STDOUT);
657 a68g_exit (EXIT_FAILURE);
658 }
659 for (int k = 1; k < argc; k++) {
660 add_option_list (&(OPTION_LIST (&A68_JOB)), argv[k], NO_LINE);
661 }
662 if (!set_options (OPTION_LIST (&A68_JOB), A68_TRUE)) {
663 a68g_exit (EXIT_FAILURE);
664 }
665 // State license.
666 if (OPTION_LICENSE (&A68_JOB)) {
667 state_license (A68_STDOUT);
668 }
669 // State version.
670 if (OPTION_VERSION (&A68_JOB)) {
671 state_version (A68_STDOUT);
672 }
673 // Start the UI.
674 init_before_tokeniser ();
675 // Running a script.
676 #if defined (BUILD_A68_COMPILER)
677 if (OPTION_RUN_SCRIPT (&A68_JOB)) {
678 load_script ();
679 }
680 #endif
681 // We translate the program.
682 if (FILE_INITIAL_NAME (&A68_JOB) == NO_TEXT || strlen (FILE_INITIAL_NAME (&A68_JOB)) == 0) {
683 SCAN_ERROR (!(OPTION_LICENSE (&A68_JOB) || OPTION_VERSION (&A68_JOB)), NO_LINE, NO_TEXT, ERROR_NO_SOURCE_FILE);
684 } else {
685 compiler_interpreter ();
686 }
687 a68g_exit (ERROR_COUNT (&A68_JOB) == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
688 return EXIT_SUCCESS;
689 } else {
690 diagnostics_to_terminal (TOP_LINE (&A68_JOB), A68_ALL_DIAGNOSTICS);
691 a68g_exit (EXIT_FAILURE);
692 return EXIT_FAILURE;
693 }
694 }
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© 2002-2025 J.M. van der Veer (jmvdveer@xs4all.nl)
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