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Comparing cvsroot/microscheme/scheme.c (file contents):
Revision 1.10 by root, Thu Nov 26 00:03:19 2015 UTC vs.
Revision 1.69 by root, Mon Dec 7 22:12:53 2015 UTC

… …
16 * (MINISCM) This is a revised and modified version by Akira KIDA. 16 * (MINISCM) This is a revised and modified version by Akira KIDA.
17 * (MINISCM) current version is 0.85k4 (15 May 1994) 17 * (MINISCM) current version is 0.85k4 (15 May 1994)
18 * 18 *
19 */ 19 */
20 20
21#define PAGE_SIZE 4096 /* does not work on sparc/alpha */ 21#define _POSIX_C_SOURCE 200201
22#include "malloc.c" 22#define _XOPEN_SOURCE 600
23#define _GNU_SOURCE 1 /* for malloc mremap */
23 24
24#define SCHEME_SOURCE 25#define SCHEME_SOURCE
25#include "scheme-private.h" 26#include "scheme-private.h"
26#ifndef WIN32 27#ifndef WIN32
27# include <unistd.h> 28# include <unistd.h>
28#endif 29#endif
29#if USE_MATH 30#if USE_MATH
30# include <math.h> 31# include <math.h>
31#endif 32#endif
32 33
34#define ECB_NO_THREADS 1
35#include "ecb.h"
36
33#include <sys/types.h> 37#include <sys/types.h>
34#include <sys/stat.h> 38#include <sys/stat.h>
35#include <fcntl.h> 39#include <fcntl.h>
36 40
41#if !USE_ERROR_CHECKING
42# define NDEBUG
43#endif
44
45#include <assert.h>
46#include <stdlib.h>
37#include <string.h> 47#include <string.h>
38#include <stdlib.h>
39 48
40#include <limits.h> 49#include <limits.h>
41#include <inttypes.h> 50#include <inttypes.h>
42#include <float.h> 51#include <float.h>
43//#include <ctype.h> 52
53#if !USE_SYSTEM_MALLOC
54# define PAGE_SIZE 4096 /* does not work on sparc/alpha */
55# include "malloc.c"
56# define malloc(n) tiny_malloc (n)
57# define realloc(p,n) tiny_realloc (p, n)
58# define free(p) tiny_free (p)
59#endif
60
61#if '1' != '0' + 1 \
62 || '2' != '0' + 2 || '3' != '0' + 3 || '4' != '0' + 4 || '5' != '0' + 5 \
63 || '6' != '0' + 6 || '7' != '0' + 7 || '8' != '0' + 8 || '9' != '0' + 9 \
64 || 'b' != 'a' + 1 || 'c' != 'a' + 2 || 'd' != 'a' + 3 || 'e' != 'a' + 4 \
65 || 'f' != 'a' + 5
66# error "execution character set digits not consecutive"
67#endif
44 68
45enum { 69enum {
46 TOK_EOF, 70 TOK_EOF,
47 TOK_LPAREN, 71 TOK_LPAREN,
48 TOK_RPAREN, 72 TOK_RPAREN,
49 TOK_DOT, 73 TOK_DOT,
50 TOK_ATOM, 74 TOK_ATOM,
75 TOK_DOTATOM, /* atom name starting with '.' */
76 TOK_STRATOM, /* atom name enclosed in | */
51 TOK_QUOTE, 77 TOK_QUOTE,
52 TOK_DQUOTE, 78 TOK_DQUOTE,
53 TOK_BQUOTE, 79 TOK_BQUOTE,
54 TOK_COMMA, 80 TOK_COMMA,
55 TOK_ATMARK, 81 TOK_ATMARK,
… …
57 TOK_SHARP_CONST, 83 TOK_SHARP_CONST,
58 TOK_VEC 84 TOK_VEC
59}; 85};
60 86
61#define BACKQUOTE '`' 87#define BACKQUOTE '`'
62#define DELIMITERS "()\";\f\t\v\n\r " 88#define WHITESPACE " \t\r\n\v\f"
89#define DELIMITERS "()\";" WHITESPACE
63 90
64#define NIL (&SCHEME_V->xNIL) //TODO: make this 0? 91#define NIL POINTER (&SCHEME_V->xNIL)
65#define S_T (&SCHEME_V->xT) //TODO: magic ptr value? 92#define S_T POINTER (&SCHEME_V->xT)
66#define S_F (&SCHEME_V->xF) //TODO: magic ptr value? 93#define S_F POINTER (&SCHEME_V->xF)
67#define S_SINK (&SCHEME_V->xsink) 94#define S_SINK POINTER (&SCHEME_V->xsink)
68#define S_EOF (&SCHEME_V->xEOF_OBJ) 95#define S_EOF POINTER (&SCHEME_V->xEOF_OBJ)
69
70/* should use libecb */
71#if __GNUC__ >= 4
72# define ecb_expect(expr,value) __builtin_expect ((expr),(value))
73# define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
74# define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
75#endif
76 96
77#if !USE_MULTIPLICITY 97#if !USE_MULTIPLICITY
78static scheme sc; 98static scheme sc;
79#endif 99#endif
80 100
81static void 101ecb_cold static void
82xbase (char *s, long n, int base) 102xbase (char *s, long n, int base)
83{ 103{
84 if (n < 0) 104 if (n < 0)
85 { 105 {
86 *s++ = '-'; 106 *s++ = '-';
… …
88 } 108 }
89 109
90 char *p = s; 110 char *p = s;
91 111
92 do { 112 do {
93 *p++ = '0' + n % base; 113 *p++ = "0123456789abcdef"[n % base];
94 n /= base; 114 n /= base;
95 } while (n); 115 } while (n);
96 116
97 *p-- = 0; 117 *p-- = 0;
98 118
… …
101 char x = *s; *s = *p; *p = x; 121 char x = *s; *s = *p; *p = x;
102 --p; ++s; 122 --p; ++s;
103 } 123 }
104} 124}
105 125
106static void 126ecb_cold static void
107xnum (char *s, long n) 127xnum (char *s, long n)
108{ 128{
109 xbase (s, n, 10); 129 xbase (s, n, 10);
110} 130}
111 131
112static void 132ecb_cold static void
113xwrstr (const char *s) 133putnum (SCHEME_P_ long n)
114{
115 write (1, s, strlen (s));
116}
117
118static void
119xwrnum (long n)
120{ 134{
121 char buf[64]; 135 char buf[64];
122 136
123 xnum (buf, n); 137 xnum (buf, n);
124 xwrstr (buf); 138 putstr (SCHEME_A_ buf);
125} 139}
140
141#if USE_CHAR_CLASSIFIERS
142#include <ctype.h>
143#else
126 144
127static char 145static char
128xtoupper (char c) 146xtoupper (char c)
129{ 147{
130 if (c >= 'a' && c <= 'z') 148 if (c >= 'a' && c <= 'z')
… …
150 168
151#define toupper(c) xtoupper (c) 169#define toupper(c) xtoupper (c)
152#define tolower(c) xtolower (c) 170#define tolower(c) xtolower (c)
153#define isdigit(c) xisdigit (c) 171#define isdigit(c) xisdigit (c)
154 172
155#if USE_STRLWR 173#endif
174
175#if USE_IGNORECASE
156static const char * 176ecb_cold static const char *
157strlwr (char *s) 177xstrlwr (char *s)
158{ 178{
159 const char *p = s; 179 const char *p = s;
160 180
161 while (*s) 181 while (*s)
162 { 182 {
… …
164 s++; 184 s++;
165 } 185 }
166 186
167 return p; 187 return p;
168} 188}
169#endif
170 189
190#define stricmp(a,b) strcasecmp (a, b)
191#define strlwr(s) xstrlwr (s)
192
193#else
171#define stricmp(a,b) strcmp (a, b) 194# define stricmp(a,b) strcmp (a, b)
172#define strlwr(s) (s) 195# define strlwr(s) (s)
196#endif
173 197
174#ifndef prompt 198#ifndef prompt
175# define prompt "ts> " 199# define prompt "ms> "
176#endif 200#endif
177 201
178#ifndef InitFile 202#ifndef InitFile
179# define InitFile "init.scm" 203# define InitFile "init.scm"
180#endif 204#endif
181 205
182#ifndef FIRST_CELLSEGS
183# define FIRST_CELLSEGS 3
184#endif
185
186enum scheme_types 206enum scheme_types
187{ 207{
208 T_INTEGER,
209 T_CHARACTER,
188 T_FREE, 210 T_REAL,
189 T_STRING, 211 T_STRING,
190 T_NUMBER,
191 T_SYMBOL, 212 T_SYMBOL,
192 T_PROC, 213 T_PROC,
193 T_PAIR, 214 T_PAIR, /* also used for free cells */
194 T_CLOSURE, 215 T_CLOSURE,
216 T_BYTECODE, // temp
217 T_MACRO,
195 T_CONTINUATION, 218 T_CONTINUATION,
196 T_FOREIGN, 219 T_FOREIGN,
197 T_CHARACTER,
198 T_PORT, 220 T_PORT,
199 T_VECTOR, 221 T_VECTOR,
200 T_MACRO,
201 T_PROMISE, 222 T_PROMISE,
202 T_ENVIRONMENT, 223 T_ENVIRONMENT,
203 /* one more... */ 224 T_SPECIAL, // #t, #f, '(), eof-object
225
204 T_NUM_SYSTEM_TYPES 226 T_NUM_SYSTEM_TYPES
205}; 227};
206 228
207#define T_MASKTYPE 0x000f 229#define T_MASKTYPE 0x001f
208#define T_SYNTAX 0x0010 230#define T_SYNTAX 0x0020
209#define T_IMMUTABLE 0x0020 231#define T_IMMUTABLE 0x0040
210#define T_ATOM 0x0040 /* only for gc */ 232#define T_ATOM 0x0080 /* only for gc */
211#define T_MARK 0x0080 /* only for gc */ 233//#define T_MARK 0x0080 /* only for gc */
212 234
213static num num_add (num a, num b); 235/* num, for generic arithmetic */
214static num num_mul (num a, num b); 236struct num
215static num num_div (num a, num b); 237{
238 IVALUE ivalue;
239#if USE_REAL
240 RVALUE rvalue;
241 char is_fixnum;
242#endif
243};
244
245#if USE_REAL
246# define num_is_fixnum(n) (n).is_fixnum
247# define num_set_fixnum(n,f) (n).is_fixnum = (f)
248# define num_ivalue(n) (n).ivalue
249# define num_rvalue(n) (n).rvalue
250# define num_set_ivalue(n,i) (n).rvalue = (n).ivalue = (i)
251# define num_set_rvalue(n,r) (n).rvalue = (r)
252#else
253# define num_is_fixnum(n) 1
254# define num_set_fixnum(n,f) 0
255# define num_ivalue(n) (n).ivalue
256# define num_rvalue(n) (n).ivalue
257# define num_set_ivalue(n,i) (n).ivalue = (i)
258# define num_set_rvalue(n,r) (n).ivalue = (r)
259#endif
260
261enum num_op { NUM_ADD, NUM_SUB, NUM_MUL, NUM_INTDIV };
262
263static num num_op (enum num_op op, num a, num b);
216static num num_intdiv (num a, num b); 264static num num_intdiv (num a, num b);
217static num num_sub (num a, num b);
218static num num_rem (num a, num b); 265static num num_rem (num a, num b);
219static num num_mod (num a, num b); 266static num num_mod (num a, num b);
220static int num_eq (num a, num b);
221static int num_gt (num a, num b);
222static int num_ge (num a, num b);
223static int num_lt (num a, num b);
224static int num_le (num a, num b);
225 267
226#if USE_MATH
227static double round_per_R5RS (double x);
228#endif
229static int is_zero_rvalue (RVALUE x); 268static int is_zero_rvalue (RVALUE x);
230
231static INLINE int
232num_is_integer (pointer p)
233{
234 return num_is_fixnum (p->object.number);
235}
236 269
237static num num_zero; 270static num num_zero;
238static num num_one; 271static num num_one;
239 272
273/* convert "pointer" to cell* / cell* to pointer */
274#define CELL(p) ((struct cell *)(p) + 0)
275#define POINTER(c) ((void *)((c) - 0))
276
240/* macros for cell operations */ 277/* macros for cell operations */
241#define typeflag(p) ((p)->flag + 0) 278#define typeflag(p) (CELL(p)->flag + 0)
242#define set_typeflag(p,v) ((p)->flag = (v)) 279#define set_typeflag(p,v) (CELL(p)->flag = (v))
243#define type(p) (typeflag (p) & T_MASKTYPE) 280#define type(p) (typeflag (p) & T_MASKTYPE)
244 281
245INTERFACE INLINE int 282INTERFACE int
246is_string (pointer p) 283is_string (pointer p)
247{ 284{
248 return type (p) == T_STRING; 285 return type (p) == T_STRING;
249} 286}
250 287
251#define strvalue(p) ((p)->object.string.svalue) 288#define strvalue(p) (CELL(p)->object.string.svalue)
252#define strlength(p) ((p)->object.string.length) 289#define strlength(p) (CELL(p)->object.string.length)
253 290
254INTERFACE int is_list (SCHEME_P_ pointer p);
255INTERFACE INLINE int 291INTERFACE int
256is_vector (pointer p) 292is_vector (pointer p)
257{ 293{
258 return type (p) == T_VECTOR; 294 return type (p) == T_VECTOR;
259} 295}
260 296
261#define vecvalue(p) ((p)->object.vector.vvalue) 297#define vecvalue(p) (CELL(p)->object.vector.vvalue)
262#define veclength(p) ((p)->object.vector.length) 298#define veclength(p) (CELL(p)->object.vector.length)
263INTERFACE void fill_vector (pointer vec, pointer obj); 299INTERFACE void fill_vector (pointer vec, uint32_t start, pointer obj);
264INTERFACE uint32_t vector_length (pointer vec);
265INTERFACE pointer vector_elem (pointer vec, uint32_t ielem); 300INTERFACE pointer vector_get (pointer vec, uint32_t ielem);
266INTERFACE void set_vector_elem (pointer vec, uint32_t ielem, pointer a); 301INTERFACE void vector_set (pointer vec, uint32_t ielem, pointer a);
267 302
268INTERFACE uint32_t 303INTERFACE int
269vector_length (pointer vec) 304is_integer (pointer p)
270{ 305{
271 return vec->object.vector.length; 306 return type (p) == T_INTEGER;
272} 307}
273 308
309/* not the same as in scheme, where integers are (correctly :) reals */
274INTERFACE INLINE int 310INTERFACE int
311is_real (pointer p)
312{
313 return type (p) == T_REAL;
314}
315
316INTERFACE int
275is_number (pointer p) 317is_number (pointer p)
276{ 318{
277 return type (p) == T_NUMBER; 319 return is_integer (p) || is_real (p);
278} 320}
279 321
280INTERFACE INLINE int 322INTERFACE int
281is_integer (pointer p)
282{
283 if (!is_number (p))
284 return 0;
285
286 if (num_is_integer (p) || ivalue (p) == rvalue (p))
287 return 1;
288
289 return 0;
290}
291
292INTERFACE INLINE int
293is_real (pointer p)
294{
295 return is_number (p) && !num_is_fixnum (p->object.number);
296}
297
298INTERFACE INLINE int
299is_character (pointer p) 323is_character (pointer p)
300{ 324{
301 return type (p) == T_CHARACTER; 325 return type (p) == T_CHARACTER;
302} 326}
303 327
304INTERFACE INLINE char * 328INTERFACE char *
305string_value (pointer p) 329string_value (pointer p)
306{ 330{
307 return strvalue (p); 331 return strvalue (p);
308} 332}
309 333
310INLINE num
311nvalue (pointer p)
312{
313 return (p)->object.number;
314}
315
316static IVALUE
317num_get_ivalue (const num n)
318{
319 return num_is_fixnum (n) ? num_ivalue (n) : (IVALUE)num_rvalue (n);
320}
321
322static RVALUE
323num_get_rvalue (const num n)
324{
325 return num_is_fixnum (n) ? (RVALUE)num_ivalue (n) : num_rvalue (n);
326}
327
328INTERFACE IVALUE
329ivalue (pointer p)
330{
331 return num_get_ivalue (p->object.number);
332}
333
334INTERFACE RVALUE
335rvalue (pointer p)
336{
337 return num_get_rvalue (p->object.number);
338}
339
340#define ivalue_unchecked(p) ((p)->object.number.value.ivalue) 334#define ivalue_unchecked(p) (CELL(p)->object.ivalue + 0)
335#define set_ivalue(p,v) CELL(p)->object.ivalue = (v)
336
341#if USE_REAL 337#if USE_REAL
342# define rvalue_unchecked(p) ((p)->object.number.value.rvalue) 338#define rvalue_unchecked(p) CELL(p)->object.rvalue
343# define set_num_integer(p) (p)->object.number.is_fixnum=1; 339#define set_rvalue(p,v) CELL(p)->object.rvalue = (v)
344# define set_num_real(p) (p)->object.number.is_fixnum=0;
345#else 340#else
346# define rvalue_unchecked(p) ((p)->object.number.value.ivalue) 341#define rvalue_unchecked(p) CELL(p)->object.ivalue
347# define set_num_integer(p) 0 342#define set_rvalue(p,v) CELL(p)->object.ivalue = (v)
348# define set_num_real(p) 0
349#endif 343#endif
344
350INTERFACE long 345INTERFACE long
351charvalue (pointer p) 346charvalue (pointer p)
352{ 347{
353 return ivalue_unchecked (p); 348 return ivalue_unchecked (p);
354} 349}
355 350
351#define port(p) CELL(p)->object.port
352#define set_port(p,v) port(p) = (v)
356INTERFACE INLINE int 353INTERFACE int
357is_port (pointer p) 354is_port (pointer p)
358{ 355{
359 return type (p) == T_PORT; 356 return type (p) == T_PORT;
360} 357}
361 358
362INTERFACE INLINE int 359INTERFACE int
363is_inport (pointer p) 360is_inport (pointer p)
364{ 361{
365 return is_port (p) && p->object.port->kind & port_input; 362 return is_port (p) && port (p)->kind & port_input;
366} 363}
367 364
368INTERFACE INLINE int 365INTERFACE int
369is_outport (pointer p) 366is_outport (pointer p)
370{ 367{
371 return is_port (p) && p->object.port->kind & port_output; 368 return is_port (p) && port (p)->kind & port_output;
372} 369}
373 370
374INTERFACE INLINE int 371INTERFACE int
375is_pair (pointer p) 372is_pair (pointer p)
376{ 373{
377 return type (p) == T_PAIR; 374 return type (p) == T_PAIR;
378} 375}
379 376
380#define car(p) ((p)->object.cons.car + 0) 377#define car(p) (POINTER (CELL(p)->object.cons.car))
381#define cdr(p) ((p)->object.cons.cdr) /* find_consecutive_cells uses &cdr */ 378#define cdr(p) (POINTER (CELL(p)->object.cons.cdr))
382 379
383#define caar(p) car (car (p)) 380static pointer caar (pointer p) { return car (car (p)); }
384#define cadr(p) car (cdr (p)) 381static pointer cadr (pointer p) { return car (cdr (p)); }
385#define cdar(p) cdr (car (p)) 382static pointer cdar (pointer p) { return cdr (car (p)); }
386#define cddr(p) cdr (cdr (p)) 383static pointer cddr (pointer p) { return cdr (cdr (p)); }
387 384
388#define cadar(p) car (cdr (car (p))) 385static pointer cadar (pointer p) { return car (cdr (car (p))); }
389#define caddr(p) car (cdr (cdr (p))) 386static pointer caddr (pointer p) { return car (cdr (cdr (p))); }
390#define cdaar(p) cdr (car (car (p))) 387static pointer cdaar (pointer p) { return cdr (car (car (p))); }
388
389static pointer cadddr (pointer p) { return car (car (car (cdr (p)))); }
391 390
392INTERFACE void 391INTERFACE void
393set_car (pointer p, pointer q) 392set_car (pointer p, pointer q)
394{ 393{
395 p->object.cons.car = q; 394 CELL(p)->object.cons.car = CELL (q);
396} 395}
397 396
398INTERFACE void 397INTERFACE void
399set_cdr (pointer p, pointer q) 398set_cdr (pointer p, pointer q)
400{ 399{
401 p->object.cons.cdr = q; 400 CELL(p)->object.cons.cdr = CELL (q);
402} 401}
403 402
404INTERFACE pointer 403INTERFACE pointer
405pair_car (pointer p) 404pair_car (pointer p)
406{ 405{
… …
411pair_cdr (pointer p) 410pair_cdr (pointer p)
412{ 411{
413 return cdr (p); 412 return cdr (p);
414} 413}
415 414
416INTERFACE INLINE int 415INTERFACE int
417is_symbol (pointer p) 416is_symbol (pointer p)
418{ 417{
419 return type (p) == T_SYMBOL; 418 return type (p) == T_SYMBOL;
420} 419}
421 420
422INTERFACE INLINE char * 421INTERFACE char *
423symname (pointer p) 422symname (pointer p)
424{ 423{
425 return strvalue (car (p)); 424 return strvalue (p);
426} 425}
427 426
428#if USE_PLIST 427#if USE_PLIST
428#error plists are broken because symbols are no longer pairs
429#define symprop(p) cdr(p)
429SCHEME_EXPORT INLINE int 430SCHEME_EXPORT int
430hasprop (pointer p) 431hasprop (pointer p)
431{ 432{
432 return typeflag (p) & T_SYMBOL; 433 return typeflag (p) & T_SYMBOL;
433} 434}
434
435# define symprop(p) cdr(p)
436#endif 435#endif
437 436
438INTERFACE INLINE int 437INTERFACE int
439is_syntax (pointer p) 438is_syntax (pointer p)
440{ 439{
441 return typeflag (p) & T_SYNTAX; 440 return typeflag (p) & T_SYNTAX;
442} 441}
443 442
444INTERFACE INLINE int 443INTERFACE int
445is_proc (pointer p) 444is_proc (pointer p)
446{ 445{
447 return type (p) == T_PROC; 446 return type (p) == T_PROC;
448} 447}
449 448
450INTERFACE INLINE int 449INTERFACE int
451is_foreign (pointer p) 450is_foreign (pointer p)
452{ 451{
453 return type (p) == T_FOREIGN; 452 return type (p) == T_FOREIGN;
454} 453}
455 454
456INTERFACE INLINE char * 455INTERFACE char *
457syntaxname (pointer p) 456syntaxname (pointer p)
458{ 457{
459 return strvalue (car (p)); 458 return strvalue (p);
460} 459}
461 460
462#define procnum(p) ivalue (p) 461#define procnum(p) ivalue_unchecked (p)
463static const char *procname (pointer x); 462static const char *procname (pointer x);
464 463
465INTERFACE INLINE int 464INTERFACE int
466is_closure (pointer p) 465is_closure (pointer p)
467{ 466{
468 return type (p) == T_CLOSURE; 467 return type (p) == T_CLOSURE;
469} 468}
470 469
471INTERFACE INLINE int 470INTERFACE int
472is_macro (pointer p) 471is_macro (pointer p)
473{ 472{
474 return type (p) == T_MACRO; 473 return type (p) == T_MACRO;
475} 474}
476 475
477INTERFACE INLINE pointer 476INTERFACE pointer
478closure_code (pointer p) 477closure_code (pointer p)
479{ 478{
480 return car (p); 479 return car (p);
481} 480}
482 481
483INTERFACE INLINE pointer 482INTERFACE pointer
484closure_env (pointer p) 483closure_env (pointer p)
485{ 484{
486 return cdr (p); 485 return cdr (p);
487} 486}
488 487
489INTERFACE INLINE int 488INTERFACE int
490is_continuation (pointer p) 489is_continuation (pointer p)
491{ 490{
492 return type (p) == T_CONTINUATION; 491 return type (p) == T_CONTINUATION;
493} 492}
494 493
495#define cont_dump(p) cdr (p) 494#define cont_dump(p) cdr (p)
496#define set_cont_dump(p,v) set_cdr ((p), (v)) 495#define set_cont_dump(p,v) set_cdr ((p), (v))
497 496
498/* To do: promise should be forced ONCE only */ 497/* To do: promise should be forced ONCE only */
499INTERFACE INLINE int 498INTERFACE int
500is_promise (pointer p) 499is_promise (pointer p)
501{ 500{
502 return type (p) == T_PROMISE; 501 return type (p) == T_PROMISE;
503} 502}
504 503
505INTERFACE INLINE int 504INTERFACE int
506is_environment (pointer p) 505is_environment (pointer p)
507{ 506{
508 return type (p) == T_ENVIRONMENT; 507 return type (p) == T_ENVIRONMENT;
509} 508}
510 509
… …
512 511
513#define is_atom(p) (typeflag (p) & T_ATOM) 512#define is_atom(p) (typeflag (p) & T_ATOM)
514#define setatom(p) set_typeflag ((p), typeflag (p) | T_ATOM) 513#define setatom(p) set_typeflag ((p), typeflag (p) | T_ATOM)
515#define clratom(p) set_typeflag ((p), typeflag (p) & ~T_ATOM) 514#define clratom(p) set_typeflag ((p), typeflag (p) & ~T_ATOM)
516 515
516#if 1
517#define is_mark(p) (CELL(p)->mark)
518#define setmark(p) (CELL(p)->mark = 1)
519#define clrmark(p) (CELL(p)->mark = 0)
520#else
517#define is_mark(p) (typeflag (p) & T_MARK) 521#define is_mark(p) (typeflag (p) & T_MARK)
518#define setmark(p) set_typeflag ((p), typeflag (p) | T_MARK) 522#define setmark(p) set_typeflag ((p), typeflag (p) | T_MARK)
519#define clrmark(p) set_typeflag ((p), typeflag (p) & ~T_MARK) 523#define clrmark(p) set_typeflag ((p), typeflag (p) & ~T_MARK)
524#endif
520 525
521INTERFACE INLINE int 526INTERFACE int
522is_immutable (pointer p) 527is_immutable (pointer p)
523{ 528{
524 return typeflag (p) & T_IMMUTABLE && USE_ERROR_CHECKING; 529 return typeflag (p) & T_IMMUTABLE && USE_ERROR_CHECKING;
525} 530}
526 531
527INTERFACE INLINE void 532INTERFACE void
528setimmutable (pointer p) 533setimmutable (pointer p)
529{ 534{
530#if USE_ERROR_CHECKING 535#if USE_ERROR_CHECKING
531 set_typeflag (p, typeflag (p) | T_IMMUTABLE); 536 set_typeflag (p, typeflag (p) | T_IMMUTABLE);
532#endif 537#endif
533} 538}
534 539
540/* Result is:
541 proper list: length
542 circular list: -1
543 not even a pair: -2
544 dotted list: -2 minus length before dot
545*/
546ecb_hot INTERFACE int
547list_length (SCHEME_P_ pointer a)
548{
549 int i = 0;
550 pointer slow, fast;
551
552 slow = fast = a;
553
554 while (1)
555 {
556 if (fast == NIL)
557 return i;
558
559 if (!is_pair (fast))
560 return -2 - i;
561
562 fast = cdr (fast);
563 ++i;
564
565 if (fast == NIL)
566 return i;
567
568 if (!is_pair (fast))
569 return -2 - i;
570
571 ++i;
572 fast = cdr (fast);
573
574 /* Safe because we would have already returned if `fast'
575 encountered a non-pair. */
576 slow = cdr (slow);
577
578 if (fast == slow)
579 {
580 /* the fast pointer has looped back around and caught up
581 with the slow pointer, hence the structure is circular,
582 not of finite length, and therefore not a list */
583 return -1;
584 }
585 }
586}
587
588INTERFACE int
589is_list (SCHEME_P_ pointer a)
590{
591 return list_length (SCHEME_A_ a) >= 0;
592}
593
535#if USE_CHAR_CLASSIFIERS 594#if USE_CHAR_CLASSIFIERS
536static INLINE int 595
596ecb_inline int
537Cisalpha (int c) 597Cisalpha (int c)
538{ 598{
539 return isascii (c) && isalpha (c); 599 return isascii (c) && isalpha (c);
540} 600}
541 601
542static INLINE int 602ecb_inline int
543Cisdigit (int c) 603Cisdigit (int c)
544{ 604{
545 return isascii (c) && isdigit (c); 605 return isascii (c) && isdigit (c);
546} 606}
547 607
548static INLINE int 608ecb_inline int
549Cisspace (int c) 609Cisspace (int c)
550{ 610{
551 return isascii (c) && isspace (c); 611 return isascii (c) && isspace (c);
552} 612}
553 613
554static INLINE int 614ecb_inline int
555Cisupper (int c) 615Cisupper (int c)
556{ 616{
557 return isascii (c) && isupper (c); 617 return isascii (c) && isupper (c);
558} 618}
559 619
560static INLINE int 620ecb_inline int
561Cislower (int c) 621Cislower (int c)
562{ 622{
563 return isascii (c) && islower (c); 623 return isascii (c) && islower (c);
564} 624}
565#endif 625#endif
… …
598 "gs", 658 "gs",
599 "rs", 659 "rs",
600 "us" 660 "us"
601}; 661};
602 662
603static int 663ecb_cold static int
604is_ascii_name (const char *name, int *pc) 664is_ascii_name (const char *name, int *pc)
605{ 665{
606 int i; 666 int i;
607 667
608 for (i = 0; i < 32; i++) 668 for (i = 0; i < 32; i++)
… …
626#endif 686#endif
627 687
628static int file_push (SCHEME_P_ const char *fname); 688static int file_push (SCHEME_P_ const char *fname);
629static void file_pop (SCHEME_P); 689static void file_pop (SCHEME_P);
630static int file_interactive (SCHEME_P); 690static int file_interactive (SCHEME_P);
631static INLINE int is_one_of (char *s, int c); 691ecb_inline int is_one_of (const char *s, int c);
632static int alloc_cellseg (SCHEME_P_ int n); 692static int alloc_cellseg (SCHEME_P);
633static INLINE pointer get_cell (SCHEME_P_ pointer a, pointer b); 693ecb_inline pointer get_cell (SCHEME_P_ pointer a, pointer b);
634static void finalize_cell (SCHEME_P_ pointer a); 694static void finalize_cell (SCHEME_P_ pointer a);
635static int count_consecutive_cells (pointer x, int needed);
636static pointer find_slot_in_env (SCHEME_P_ pointer env, pointer sym, int all); 695static pointer find_slot_in_env (SCHEME_P_ pointer env, pointer sym, int all);
637static pointer mk_number (SCHEME_P_ const num n); 696static pointer mk_number (SCHEME_P_ const num n);
638static char *store_string (SCHEME_P_ uint32_t len, const char *str, char fill); 697static char *store_string (SCHEME_P_ uint32_t len, const char *str, char fill);
639static pointer mk_vector (SCHEME_P_ uint32_t len); 698static pointer mk_vector (SCHEME_P_ uint32_t len);
640static pointer mk_atom (SCHEME_P_ char *q); 699static pointer mk_atom (SCHEME_P_ char *q);
641static pointer mk_sharp_const (SCHEME_P_ char *name); 700static pointer mk_sharp_const (SCHEME_P_ char *name);
642 701
702static pointer mk_port (SCHEME_P_ port *p);
703
643#if USE_PORTS 704#if USE_PORTS
644static pointer mk_port (SCHEME_P_ port *p);
645static pointer port_from_filename (SCHEME_P_ const char *fn, int prop); 705static pointer port_from_filename (SCHEME_P_ const char *fn, int prop);
646static pointer port_from_file (SCHEME_P_ int, int prop); 706static pointer port_from_file (SCHEME_P_ int, int prop);
647static pointer port_from_string (SCHEME_P_ char *start, char *past_the_end, int prop); 707static pointer port_from_string (SCHEME_P_ char *start, char *past_the_end, int prop);
648static port *port_rep_from_filename (SCHEME_P_ const char *fn, int prop); 708static port *port_rep_from_filename (SCHEME_P_ const char *fn, int prop);
649static port *port_rep_from_file (SCHEME_P_ int, int prop); 709static port *port_rep_from_file (SCHEME_P_ int, int prop);
650static port *port_rep_from_string (SCHEME_P_ char *start, char *past_the_end, int prop); 710static port *port_rep_from_string (SCHEME_P_ char *start, char *past_the_end, int prop);
651static void port_close (SCHEME_P_ pointer p, int flag); 711static void port_close (SCHEME_P_ pointer p, int flag);
652#endif 712#endif
713
653static void mark (pointer a); 714static void mark (pointer a);
654static void gc (SCHEME_P_ pointer a, pointer b); 715static void gc (SCHEME_P_ pointer a, pointer b);
655static int basic_inchar (port *pt); 716static int basic_inchar (port *pt);
656static int inchar (SCHEME_P); 717static int inchar (SCHEME_P);
657static void backchar (SCHEME_P_ int c); 718static void backchar (SCHEME_P_ int c);
658static char *readstr_upto (SCHEME_P_ char *delim); 719static char *readstr_upto (SCHEME_P_ int skip, const char *delim);
659static pointer readstrexp (SCHEME_P); 720static pointer readstrexp (SCHEME_P_ char delim);
660static INLINE int skipspace (SCHEME_P); 721static int skipspace (SCHEME_P);
661static int token (SCHEME_P); 722static int token (SCHEME_P);
662static void printslashstring (SCHEME_P_ char *s, int len); 723static void printslashstring (SCHEME_P_ char *s, int len);
663static void atom2str (SCHEME_P_ pointer l, int f, char **pp, int *plen); 724static void atom2str (SCHEME_P_ pointer l, int f, char **pp, int *plen);
664static void printatom (SCHEME_P_ pointer l, int f); 725static void printatom (SCHEME_P_ pointer l, int f);
665static pointer mk_proc (SCHEME_P_ enum scheme_opcodes op); 726static pointer mk_proc (SCHEME_P_ enum scheme_opcodes op);
… …
669static pointer reverse_in_place (SCHEME_P_ pointer term, pointer list); 730static pointer reverse_in_place (SCHEME_P_ pointer term, pointer list);
670static pointer revappend (SCHEME_P_ pointer a, pointer b); 731static pointer revappend (SCHEME_P_ pointer a, pointer b);
671static pointer ss_get_cont (SCHEME_P); 732static pointer ss_get_cont (SCHEME_P);
672static void ss_set_cont (SCHEME_P_ pointer cont); 733static void ss_set_cont (SCHEME_P_ pointer cont);
673static void dump_stack_mark (SCHEME_P); 734static void dump_stack_mark (SCHEME_P);
674static pointer opexe_0 (SCHEME_P_ enum scheme_opcodes op); 735static int opexe_0 (SCHEME_P_ enum scheme_opcodes op);
736static int opexe_1 (SCHEME_P_ enum scheme_opcodes op);
675static pointer opexe_2 (SCHEME_P_ enum scheme_opcodes op); 737static int opexe_2 (SCHEME_P_ enum scheme_opcodes op);
676static pointer opexe_3 (SCHEME_P_ enum scheme_opcodes op); 738static int opexe_3 (SCHEME_P_ enum scheme_opcodes op);
677static pointer opexe_4 (SCHEME_P_ enum scheme_opcodes op); 739static int opexe_4 (SCHEME_P_ enum scheme_opcodes op);
678static pointer opexe_5 (SCHEME_P_ enum scheme_opcodes op); 740static int opexe_5 (SCHEME_P_ enum scheme_opcodes op);
679static pointer opexe_6 (SCHEME_P_ enum scheme_opcodes op); 741static int opexe_6 (SCHEME_P_ enum scheme_opcodes op);
680static void Eval_Cycle (SCHEME_P_ enum scheme_opcodes op); 742static void Eval_Cycle (SCHEME_P_ enum scheme_opcodes op);
681static void assign_syntax (SCHEME_P_ const char *name); 743static void assign_syntax (SCHEME_P_ const char *name);
682static int syntaxnum (pointer p); 744static int syntaxnum (pointer p);
683static void assign_proc (SCHEME_P_ enum scheme_opcodes, const char *name); 745static void assign_proc (SCHEME_P_ enum scheme_opcodes, const char *name);
684 746
747static IVALUE
748ivalue (pointer x)
749{
750 return is_integer (x) ? ivalue_unchecked (x) : rvalue_unchecked (x);
751}
752
753static RVALUE
754rvalue (pointer x)
755{
756 return is_integer (x) ? ivalue_unchecked (x) : rvalue_unchecked (x);
757}
758
759INTERFACE num
760nvalue (pointer x)
761{
762 num n;
763
764 num_set_fixnum (n, is_integer (x));
765
766 if (num_is_fixnum (n))
767 num_set_ivalue (n, ivalue_unchecked (x));
768 else
769 num_set_rvalue (n, rvalue_unchecked (x));
770
771 return n;
772}
773
685static num 774static num
686num_add (num a, num b) 775num_op (enum num_op op, num a, num b)
687{ 776{
688 num ret; 777 num ret;
689 778
690 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b)); 779 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b));
691 780
692 if (num_is_fixnum (ret)) 781 if (num_is_fixnum (ret))
693 num_set_ivalue (ret, num_get_ivalue (a) + num_get_ivalue (b)); 782 {
783 switch (op)
784 {
785 case NUM_ADD: a.ivalue += b.ivalue; break;
786 case NUM_SUB: a.ivalue -= b.ivalue; break;
787 case NUM_MUL: a.ivalue *= b.ivalue; break;
788 case NUM_INTDIV: a.ivalue /= b.ivalue; break;
789 }
790
791 num_set_ivalue (ret, a.ivalue);
792 }
793#if USE_REAL
694 else 794 else
695 num_set_rvalue (ret, num_get_rvalue (a) + num_get_rvalue (b)); 795 {
796 switch (op)
797 {
798 case NUM_ADD: a.rvalue += b.rvalue; break;
799 case NUM_SUB: a.rvalue -= b.rvalue; break;
800 case NUM_MUL: a.rvalue *= b.rvalue; break;
801 case NUM_INTDIV: a.rvalue /= b.rvalue; break;
802 }
696 803
697 return ret; 804 num_set_rvalue (ret, a.rvalue);
698} 805 }
699 806#endif
700static num
701num_mul (num a, num b)
702{
703 num ret;
704
705 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b));
706
707 if (num_is_fixnum (ret))
708 num_set_ivalue (ret, num_get_ivalue (a) * num_get_ivalue (b));
709 else
710 num_set_rvalue (ret, num_get_rvalue (a) * num_get_rvalue (b));
711 807
712 return ret; 808 return ret;
713} 809}
714 810
715static num 811static num
716num_div (num a, num b) 812num_div (num a, num b)
717{ 813{
718 num ret; 814 num ret;
719 815
720 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b) && num_get_ivalue (a) % num_get_ivalue (b) == 0); 816 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b) && num_ivalue (a) % num_ivalue (b) == 0);
721 817
722 if (num_is_fixnum (ret)) 818 if (num_is_fixnum (ret))
723 num_set_ivalue (ret, num_get_ivalue (a) / num_get_ivalue (b)); 819 num_set_ivalue (ret, num_ivalue (a) / num_ivalue (b));
724 else 820 else
725 num_set_rvalue (ret, num_get_rvalue (a) / num_get_rvalue (b)); 821 num_set_rvalue (ret, num_rvalue (a) / num_rvalue (b));
726
727 return ret;
728}
729
730static num
731num_intdiv (num a, num b)
732{
733 num ret;
734
735 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b));
736
737 if (num_is_fixnum (ret))
738 num_set_ivalue (ret, num_get_ivalue (a) / num_get_ivalue (b));
739 else
740 num_set_rvalue (ret, num_get_rvalue (a) / num_get_rvalue (b));
741
742 return ret;
743}
744
745static num
746num_sub (num a, num b)
747{
748 num ret;
749
750 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b));
751
752 if (num_is_fixnum (ret))
753 num_set_ivalue (ret, num_get_ivalue (a) - num_get_ivalue (b));
754 else
755 num_set_rvalue (ret, num_get_rvalue (a) - num_get_rvalue (b));
756 822
757 return ret; 823 return ret;
758} 824}
759 825
760static num 826static num
… …
762{ 828{
763 num ret; 829 num ret;
764 long e1, e2, res; 830 long e1, e2, res;
765 831
766 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b)); 832 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b));
767 e1 = num_get_ivalue (a); 833 e1 = num_ivalue (a);
768 e2 = num_get_ivalue (b); 834 e2 = num_ivalue (b);
769 res = e1 % e2; 835 res = e1 % e2;
770 836
771 /* remainder should have same sign as second operand */ 837 /* remainder should have same sign as second operand */
772 if (res > 0) 838 if (res > 0)
773 { 839 {
… …
789{ 855{
790 num ret; 856 num ret;
791 long e1, e2, res; 857 long e1, e2, res;
792 858
793 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b)); 859 num_set_fixnum (ret, num_is_fixnum (a) && num_is_fixnum (b));
794 e1 = num_get_ivalue (a); 860 e1 = num_ivalue (a);
795 e2 = num_get_ivalue (b); 861 e2 = num_ivalue (b);
796 res = e1 % e2; 862 res = e1 % e2;
797 863
798 /* modulo should have same sign as second operand */ 864 /* modulo should have same sign as second operand */
799 if (res * e2 < 0) 865 if (res * e2 < 0)
800 res += e2; 866 res += e2;
801 867
802 num_set_ivalue (ret, res); 868 num_set_ivalue (ret, res);
803 return ret; 869 return ret;
804} 870}
805 871
872/* this completely disrespects NaNs, but r5rs doesn't even allow NaNs */
806static int 873static int
807num_eq (num a, num b) 874num_cmp (num a, num b)
808{ 875{
876 int is_fixnum = num_is_fixnum (a) && num_is_fixnum (b);
809 int ret; 877 int ret;
810 int is_fixnum = num_is_fixnum (a) && num_is_fixnum (b);
811 878
812 if (is_fixnum) 879 if (is_fixnum)
813 ret = num_get_ivalue (a) == num_get_ivalue (b); 880 {
881 IVALUE av = num_ivalue (a);
882 IVALUE bv = num_ivalue (b);
883
884 ret = av == bv ? 0 : av < bv ? -1 : +1;
885 }
814 else 886 else
815 ret = num_get_rvalue (a) == num_get_rvalue (b); 887 {
888 RVALUE av = num_rvalue (a);
889 RVALUE bv = num_rvalue (b);
890
891 ret = av == bv ? 0 : av < bv ? -1 : +1;
892 }
816 893
817 return ret; 894 return ret;
818} 895}
819
820
821static int
822num_gt (num a, num b)
823{
824 int ret;
825 int is_fixnum = num_is_fixnum (a) && num_is_fixnum (b);
826
827 if (is_fixnum)
828 ret = num_get_ivalue (a) > num_get_ivalue (b);
829 else
830 ret = num_get_rvalue (a) > num_get_rvalue (b);
831
832 return ret;
833}
834
835static int
836num_ge (num a, num b)
837{
838 return !num_lt (a, b);
839}
840
841static int
842num_lt (num a, num b)
843{
844 int ret;
845 int is_fixnum = num_is_fixnum (a) && num_is_fixnum (b);
846
847 if (is_fixnum)
848 ret = num_get_ivalue (a) < num_get_ivalue (b);
849 else
850 ret = num_get_rvalue (a) < num_get_rvalue (b);
851
852 return ret;
853}
854
855static int
856num_le (num a, num b)
857{
858 return !num_gt (a, b);
859}
860
861#if USE_MATH
862
863/* Round to nearest. Round to even if midway */
864static double
865round_per_R5RS (double x)
866{
867 double fl = floor (x);
868 double ce = ceil (x);
869 double dfl = x - fl;
870 double dce = ce - x;
871
872 if (dfl > dce)
873 return ce;
874 else if (dfl < dce)
875 return fl;
876 else
877 {
878 if (fmod (fl, 2.0) == 0.0) /* I imagine this holds */
879 return fl;
880 else
881 return ce;
882 }
883}
884#endif
885 896
886static int 897static int
887is_zero_rvalue (RVALUE x) 898is_zero_rvalue (RVALUE x)
888{ 899{
900 return x == 0;
901#if 0
889#if USE_REAL 902#if USE_REAL
890 return x < DBL_MIN && x > -DBL_MIN; /* why the hate of denormals? this should be == 0. */ 903 return x < DBL_MIN && x > -DBL_MIN; /* why the hate of denormals? this should be == 0. */
891#else 904#else
892 return x == 0; 905 return x == 0;
893#endif 906#endif
907#endif
894} 908}
895 909
896/* allocate new cell segment */ 910/* allocate new cell segment */
897static int 911ecb_cold static int
898alloc_cellseg (SCHEME_P_ int n) 912alloc_cellseg (SCHEME_P)
899{ 913{
900 pointer newp; 914 struct cell *newp;
901 pointer last; 915 struct cell *last;
902 pointer p; 916 struct cell *p;
903 char *cp; 917 char *cp;
904 long i; 918 long i;
905 int k; 919 int k;
906 920
907 static int segsize = CELL_SEGSIZE >> 1; 921 static int segsize = CELL_SEGSIZE >> 1;
908 segsize <<= 1; 922 segsize <<= 1;
909 923
910 for (k = 0; k < n; k++)
911 {
912 if (SCHEME_V->last_cell_seg >= CELL_NSEGMENT - 1)
913 return k;
914
915 cp = malloc (segsize * sizeof (struct cell)); 924 cp = malloc (segsize * sizeof (struct cell));
916 925
917 if (!cp && USE_ERROR_CHECKING) 926 if (!cp && USE_ERROR_CHECKING)
918 return k; 927 return k;
919 928
920 i = ++SCHEME_V->last_cell_seg; 929 i = ++SCHEME_V->last_cell_seg;
921 SCHEME_V->alloc_seg[i] = cp;
922 930
923 /* insert new segment in address order */ 931 newp = (struct cell *)cp;
924 newp = (pointer)cp;
925 SCHEME_V->cell_seg[i] = newp; 932 SCHEME_V->cell_seg[i] = newp;
926 SCHEME_V->cell_segsize[i] = segsize; 933 SCHEME_V->cell_segsize[i] = segsize;
927
928 //TODO: insert, not swap
929 while (i > 0 && SCHEME_V->cell_seg[i - 1] > SCHEME_V->cell_seg[i])
930 {
931 p = SCHEME_V->cell_seg[i];
932 SCHEME_V->cell_seg[i] = SCHEME_V->cell_seg[i - 1];
933 SCHEME_V->cell_seg[i - 1] = p;
934
935 k = SCHEME_V->cell_segsize[i];
936 SCHEME_V->cell_segsize[i] = SCHEME_V->cell_segsize[i - 1];
937 SCHEME_V->cell_segsize[i - 1] = k;
938
939 --i;
940 }
941
942 SCHEME_V->fcells += segsize; 934 SCHEME_V->fcells += segsize;
943 last = newp + segsize - 1; 935 last = newp + segsize - 1;
944 936
945 for (p = newp; p <= last; p++) 937 for (p = newp; p <= last; p++)
946 { 938 {
939 pointer cp = POINTER (p);
940 clrmark (cp);
947 set_typeflag (p, T_FREE); 941 set_typeflag (cp, T_PAIR);
948 set_car (p, NIL); 942 set_car (cp, NIL);
949 set_cdr (p, p + 1); 943 set_cdr (cp, POINTER (p + 1));
950 } 944 }
951 945
952 /* insert new cells in address order on free list */
953 if (SCHEME_V->free_cell == NIL || p < SCHEME_V->free_cell)
954 {
955 set_cdr (last, SCHEME_V->free_cell); 946 set_cdr (POINTER (last), SCHEME_V->free_cell);
956 SCHEME_V->free_cell = newp; 947 SCHEME_V->free_cell = POINTER (newp);
957 }
958 else
959 {
960 p = SCHEME_V->free_cell;
961 948
962 while (cdr (p) != NIL && newp > cdr (p))
963 p = cdr (p);
964
965 set_cdr (last, cdr (p));
966 set_cdr (p, newp);
967 }
968 }
969
970 return n; 949 return 1;
971} 950}
972 951
973/* get new cell. parameter a, b is marked by gc. */ 952/* get new cell. parameter a, b is marked by gc. */
974static INLINE pointer 953ecb_inline pointer
975get_cell_x (SCHEME_P_ pointer a, pointer b) 954get_cell_x (SCHEME_P_ pointer a, pointer b)
976{ 955{
977 if (ecb_expect_false (SCHEME_V->free_cell == NIL)) 956 if (ecb_expect_false (SCHEME_V->free_cell == NIL))
978 { 957 {
979 if (SCHEME_V->no_memory && USE_ERROR_CHECKING) 958 if (SCHEME_V->no_memory && USE_ERROR_CHECKING)
980 return S_SINK; 959 return S_SINK;
981 960
982 if (SCHEME_V->free_cell == NIL) 961 if (SCHEME_V->free_cell == NIL)
983 { 962 {
984 const int min_to_be_recovered = SCHEME_V->last_cell_seg < 128 ? 128 * 8 : SCHEME_V->last_cell_seg * 8; 963 const int min_to_be_recovered = SCHEME_V->cell_segsize [SCHEME_V->last_cell_seg] >> 2;
985 964
986 gc (SCHEME_A_ a, b); 965 gc (SCHEME_A_ a, b);
987 966
988 if (SCHEME_V->fcells < min_to_be_recovered || SCHEME_V->free_cell == NIL) 967 if (SCHEME_V->fcells < min_to_be_recovered || SCHEME_V->free_cell == NIL)
989 { 968 {
990 /* if only a few recovered, get more to avoid fruitless gc's */ 969 /* if only a few recovered, get more to avoid fruitless gc's */
991 if (!alloc_cellseg (SCHEME_A_ 1) && SCHEME_V->free_cell == NIL) 970 if (!alloc_cellseg (SCHEME_A) && SCHEME_V->free_cell == NIL)
992 { 971 {
993#if USE_ERROR_CHECKING 972#if USE_ERROR_CHECKING
994 SCHEME_V->no_memory = 1; 973 SCHEME_V->no_memory = 1;
995 return S_SINK; 974 return S_SINK;
996#endif 975#endif
… …
1008 } 987 }
1009} 988}
1010 989
1011/* To retain recent allocs before interpreter knows about them - 990/* To retain recent allocs before interpreter knows about them -
1012 Tehom */ 991 Tehom */
1013 992ecb_hot static void
1014static void
1015push_recent_alloc (SCHEME_P_ pointer recent, pointer extra) 993push_recent_alloc (SCHEME_P_ pointer recent, pointer extra)
1016{ 994{
1017 pointer holder = get_cell_x (SCHEME_A_ recent, extra); 995 pointer holder = get_cell_x (SCHEME_A_ recent, extra);
1018 996
1019 set_typeflag (holder, T_PAIR); 997 set_typeflag (holder, T_PAIR);
… …
1021 set_car (holder, recent); 999 set_car (holder, recent);
1022 set_cdr (holder, car (S_SINK)); 1000 set_cdr (holder, car (S_SINK));
1023 set_car (S_SINK, holder); 1001 set_car (S_SINK, holder);
1024} 1002}
1025 1003
1026static pointer 1004ecb_hot static pointer
1027get_cell (SCHEME_P_ pointer a, pointer b) 1005get_cell (SCHEME_P_ pointer a, pointer b)
1028{ 1006{
1029 pointer cell = get_cell_x (SCHEME_A_ a, b); 1007 pointer cell = get_cell_x (SCHEME_A_ a, b);
1030 1008
1031 /* For right now, include "a" and "b" in "cell" so that gc doesn't 1009 /* For right now, include "a" and "b" in "cell" so that gc doesn't
… …
1040} 1018}
1041 1019
1042static pointer 1020static pointer
1043get_vector_object (SCHEME_P_ uint32_t len, pointer init) 1021get_vector_object (SCHEME_P_ uint32_t len, pointer init)
1044{ 1022{
1045 pointer v = get_cell_x (SCHEME_A_ 0, 0); 1023 pointer v = get_cell_x (SCHEME_A_ NIL, NIL);
1046 pointer *e = malloc (len * sizeof (pointer)); 1024 pointer *e = malloc (len * sizeof (pointer));
1047 1025
1048 if (!e && USE_ERROR_CHECKING) 1026 if (!e && USE_ERROR_CHECKING)
1049 return S_SINK; 1027 return S_SINK;
1050 1028
1051 /* Record it as a vector so that gc understands it. */ 1029 /* Record it as a vector so that gc understands it. */
1052 set_typeflag (v, T_VECTOR | T_ATOM); 1030 set_typeflag (v, T_VECTOR | T_ATOM);
1053 1031
1054 v->object.vector.vvalue = e; 1032 CELL(v)->object.vector.vvalue = e;
1055 v->object.vector.length = len; 1033 CELL(v)->object.vector.length = len;
1056 fill_vector (v, init); 1034 fill_vector (v, 0, init);
1057 push_recent_alloc (SCHEME_A_ v, NIL); 1035 push_recent_alloc (SCHEME_A_ v, NIL);
1058 1036
1059 return v; 1037 return v;
1060} 1038}
1061 1039
1062static INLINE void 1040ecb_inline void
1063ok_to_freely_gc (SCHEME_P) 1041ok_to_freely_gc (SCHEME_P)
1064{ 1042{
1065 set_car (S_SINK, NIL); 1043 set_car (S_SINK, NIL);
1066} 1044}
1067 1045
… …
1069static void 1047static void
1070check_cell_alloced (pointer p, int expect_alloced) 1048check_cell_alloced (pointer p, int expect_alloced)
1071{ 1049{
1072 /* Can't use putstr(SCHEME_A_ str) because callers have no access to sc. */ 1050 /* Can't use putstr(SCHEME_A_ str) because callers have no access to sc. */
1073 if (typeflag (p) & !expect_alloced) 1051 if (typeflag (p) & !expect_alloced)
1074 xwrstr ("Cell is already allocated!\n"); 1052 putstr (SCHEME_A_ "Cell is already allocated!\n");
1075 1053
1076 if (!(typeflag (p)) & expect_alloced) 1054 if (!(typeflag (p)) & expect_alloced)
1077 xwrstr ("Cell is not allocated!\n"); 1055 putstr (SCHEME_A_ "Cell is not allocated!\n");
1078} 1056}
1079 1057
1080static void 1058static void
1081check_range_alloced (pointer p, int n, int expect_alloced) 1059check_range_alloced (pointer p, int n, int expect_alloced)
1082{ 1060{
… …
1088#endif 1066#endif
1089 1067
1090/* Medium level cell allocation */ 1068/* Medium level cell allocation */
1091 1069
1092/* get new cons cell */ 1070/* get new cons cell */
1093pointer 1071ecb_hot static pointer
1094xcons (SCHEME_P_ pointer a, pointer b, int immutable) 1072xcons (SCHEME_P_ pointer a, pointer b)
1095{ 1073{
1096 pointer x = get_cell (SCHEME_A_ a, b); 1074 pointer x = get_cell (SCHEME_A_ a, b);
1097 1075
1098 set_typeflag (x, T_PAIR); 1076 set_typeflag (x, T_PAIR);
1099
1100 if (immutable)
1101 setimmutable (x);
1102 1077
1103 set_car (x, a); 1078 set_car (x, a);
1104 set_cdr (x, b); 1079 set_cdr (x, b);
1105 1080
1106 return x; 1081 return x;
1107} 1082}
1108 1083
1084ecb_hot static pointer
1085ximmutable_cons (SCHEME_P_ pointer a, pointer b)
1086{
1087 pointer x = xcons (SCHEME_A_ a, b);
1088 setimmutable (x);
1089 return x;
1090}
1091
1092#define cons(a,b) xcons (SCHEME_A_ a, b)
1093#define immutable_cons(a,b) ximmutable_cons (SCHEME_A_ a, b)
1094
1095ecb_cold static pointer
1096generate_symbol (SCHEME_P_ const char *name)
1097{
1098 pointer x = mk_string (SCHEME_A_ name);
1099 setimmutable (x);
1100 set_typeflag (x, T_SYMBOL | T_ATOM);
1101 return x;
1102}
1103
1109/* ========== oblist implementation ========== */ 1104/* ========== oblist implementation ========== */
1110 1105
1111#ifndef USE_OBJECT_LIST 1106#ifndef USE_OBJECT_LIST
1112 1107
1108static int
1113static int hash_fn (const char *key, int table_size); 1109hash_fn (const char *key, int table_size)
1110{
1111 const unsigned char *p = (unsigned char *)key;
1112 uint32_t hash = 2166136261U;
1114 1113
1114 while (*p)
1115 hash = (hash ^ *p++) * 16777619;
1116
1117 return hash % table_size;
1118}
1119
1115static pointer 1120ecb_cold static pointer
1116oblist_initial_value (SCHEME_P) 1121oblist_initial_value (SCHEME_P)
1117{ 1122{
1118 return mk_vector (SCHEME_A_ 461); /* probably should be bigger */ 1123 return mk_vector (SCHEME_A_ 461); /* probably should be bigger */
1119} 1124}
1120 1125
1121/* returns the new symbol */ 1126/* returns the new symbol */
1122static pointer 1127ecb_cold static pointer
1123oblist_add_by_name (SCHEME_P_ const char *name) 1128oblist_add_by_name (SCHEME_P_ const char *name)
1124{ 1129{
1125 int location; 1130 pointer x = generate_symbol (SCHEME_A_ name);
1126
1127 pointer x = immutable_cons (mk_string (SCHEME_A_ name), NIL);
1128 set_typeflag (x, T_SYMBOL);
1129 setimmutable (car (x));
1130
1131 location = hash_fn (name, veclength (SCHEME_V->oblist)); 1131 int location = hash_fn (name, veclength (SCHEME_V->oblist));
1132 set_vector_elem (SCHEME_V->oblist, location, immutable_cons (x, vector_elem (SCHEME_V->oblist, location))); 1132 vector_set (SCHEME_V->oblist, location, immutable_cons (x, vector_get (SCHEME_V->oblist, location)));
1133 return x; 1133 return x;
1134} 1134}
1135 1135
1136static INLINE pointer 1136ecb_cold static pointer
1137oblist_find_by_name (SCHEME_P_ const char *name) 1137oblist_find_by_name (SCHEME_P_ const char *name)
1138{ 1138{
1139 int location; 1139 int location;
1140 pointer x; 1140 pointer x;
1141 char *s; 1141 char *s;
1142 1142
1143 location = hash_fn (name, veclength (SCHEME_V->oblist)); 1143 location = hash_fn (name, veclength (SCHEME_V->oblist));
1144 1144
1145 for (x = vector_elem (SCHEME_V->oblist, location); x != NIL; x = cdr (x)) 1145 for (x = vector_get (SCHEME_V->oblist, location); x != NIL; x = cdr (x))
1146 { 1146 {
1147 s = symname (car (x)); 1147 s = symname (car (x));
1148 1148
1149 /* case-insensitive, per R5RS section 2 */ 1149 /* case-insensitive, per R5RS section 2 */
1150 if (stricmp (name, s) == 0) 1150 if (stricmp (name, s) == 0)
… …
1152 } 1152 }
1153 1153
1154 return NIL; 1154 return NIL;
1155} 1155}
1156 1156
1157static pointer 1157ecb_cold static pointer
1158oblist_all_symbols (SCHEME_P) 1158oblist_all_symbols (SCHEME_P)
1159{ 1159{
1160 int i; 1160 int i;
1161 pointer x; 1161 pointer x;
1162 pointer ob_list = NIL; 1162 pointer ob_list = NIL;
1163 1163
1164 for (i = 0; i < veclength (SCHEME_V->oblist); i++) 1164 for (i = 0; i < veclength (SCHEME_V->oblist); i++)
1165 for (x = vector_elem (SCHEME_V->oblist, i); x != NIL; x = cdr (x)) 1165 for (x = vector_get (SCHEME_V->oblist, i); x != NIL; x = cdr (x))
1166 ob_list = cons (x, ob_list); 1166 ob_list = cons (x, ob_list);
1167 1167
1168 return ob_list; 1168 return ob_list;
1169} 1169}
1170 1170
1171#else 1171#else
1172 1172
1173static pointer 1173ecb_cold static pointer
1174oblist_initial_value (SCHEME_P) 1174oblist_initial_value (SCHEME_P)
1175{ 1175{
1176 return NIL; 1176 return NIL;
1177} 1177}
1178 1178
1179static INLINE pointer 1179ecb_cold static pointer
1180oblist_find_by_name (SCHEME_P_ const char *name) 1180oblist_find_by_name (SCHEME_P_ const char *name)
1181{ 1181{
1182 pointer x; 1182 pointer x;
1183 char *s; 1183 char *s;
1184 1184
… …
1193 1193
1194 return NIL; 1194 return NIL;
1195} 1195}
1196 1196
1197/* returns the new symbol */ 1197/* returns the new symbol */
1198static pointer 1198ecb_cold static pointer
1199oblist_add_by_name (SCHEME_P_ const char *name) 1199oblist_add_by_name (SCHEME_P_ const char *name)
1200{ 1200{
1201 pointer x; 1201 pointer x = generate_symbol (SCHEME_A_ name);
1202
1203 x = immutable_cons (mk_string (SCHEME_A_ name), NIL);
1204 set_typeflag (x, T_SYMBOL);
1205 setimmutable (car (x));
1206 SCHEME_V->oblist = immutable_cons (x, SCHEME_V->oblist); 1202 SCHEME_V->oblist = immutable_cons (x, SCHEME_V->oblist);
1207 return x; 1203 return x;
1208} 1204}
1209 1205
1210static pointer 1206ecb_cold static pointer
1211oblist_all_symbols (SCHEME_P) 1207oblist_all_symbols (SCHEME_P)
1212{ 1208{
1213 return SCHEME_V->oblist; 1209 return SCHEME_V->oblist;
1214} 1210}
1215 1211
1216#endif 1212#endif
1217 1213
1218#if USE_PORTS
1219static pointer 1214ecb_cold static pointer
1220mk_port (SCHEME_P_ port *p) 1215mk_port (SCHEME_P_ port *p)
1221{ 1216{
1222 pointer x = get_cell (SCHEME_A_ NIL, NIL); 1217 pointer x = get_cell (SCHEME_A_ NIL, NIL);
1223 1218
1224 set_typeflag (x, T_PORT | T_ATOM); 1219 set_typeflag (x, T_PORT | T_ATOM);
1225 x->object.port = p; 1220 set_port (x, p);
1226 1221
1227 return x; 1222 return x;
1228} 1223}
1229#endif
1230 1224
1231pointer 1225ecb_cold pointer
1232mk_foreign_func (SCHEME_P_ foreign_func f) 1226mk_foreign_func (SCHEME_P_ foreign_func f)
1233{ 1227{
1234 pointer x = get_cell (SCHEME_A_ NIL, NIL); 1228 pointer x = get_cell (SCHEME_A_ NIL, NIL);
1235 1229
1236 set_typeflag (x, (T_FOREIGN | T_ATOM)); 1230 set_typeflag (x, T_FOREIGN | T_ATOM);
1237 x->object.ff = f; 1231 CELL(x)->object.ff = f;
1238 1232
1239 return x; 1233 return x;
1240} 1234}
1241 1235
1242INTERFACE pointer 1236INTERFACE pointer
1243mk_character (SCHEME_P_ int c) 1237mk_character (SCHEME_P_ int c)
1244{ 1238{
1245 pointer x = get_cell (SCHEME_A_ NIL, NIL); 1239 pointer x = get_cell (SCHEME_A_ NIL, NIL);
1246 1240
1247 set_typeflag (x, (T_CHARACTER | T_ATOM)); 1241 set_typeflag (x, T_CHARACTER | T_ATOM);
1248 ivalue_unchecked (x) = c & 0xff; 1242 set_ivalue (x, c & 0xff);
1249 set_num_integer (x); 1243
1250 return x; 1244 return x;
1251} 1245}
1252 1246
1253/* get number atom (integer) */ 1247/* get number atom (integer) */
1254INTERFACE pointer 1248INTERFACE pointer
1255mk_integer (SCHEME_P_ long num) 1249mk_integer (SCHEME_P_ long n)
1256{ 1250{
1251 pointer p = 0;
1252 pointer *pp = &p;
1253
1254#if USE_INTCACHE
1255 if (n >= INTCACHE_MIN && n <= INTCACHE_MAX)
1256 pp = &SCHEME_V->intcache[n - INTCACHE_MIN];
1257#endif
1258
1259 if (!*pp)
1260 {
1257 pointer x = get_cell (SCHEME_A_ NIL, NIL); 1261 pointer x = get_cell (SCHEME_A_ NIL, NIL);
1258 1262
1259 set_typeflag (x, (T_NUMBER | T_ATOM)); 1263 set_typeflag (x, T_INTEGER | T_ATOM);
1260 ivalue_unchecked (x) = num; 1264 setimmutable (x); /* shouldn't do anything, doesn't cost anything */
1261 set_num_integer (x); 1265 set_ivalue (x, n);
1266
1267 *pp = x;
1268 }
1269
1262 return x; 1270 return *pp;
1263} 1271}
1264 1272
1265INTERFACE pointer 1273INTERFACE pointer
1266mk_real (SCHEME_P_ RVALUE n) 1274mk_real (SCHEME_P_ RVALUE n)
1267{ 1275{
1276#if USE_REAL
1268 pointer x = get_cell (SCHEME_A_ NIL, NIL); 1277 pointer x = get_cell (SCHEME_A_ NIL, NIL);
1269 1278
1270 set_typeflag (x, (T_NUMBER | T_ATOM)); 1279 set_typeflag (x, T_REAL | T_ATOM);
1271 rvalue_unchecked (x) = n; 1280 set_rvalue (x, n);
1272 set_num_real (x); 1281
1273 return x; 1282 return x;
1283#else
1284 return mk_integer (SCHEME_A_ n);
1285#endif
1274} 1286}
1275 1287
1276static pointer 1288static pointer
1277mk_number (SCHEME_P_ const num n) 1289mk_number (SCHEME_P_ const num n)
1278{ 1290{
1291#if USE_REAL
1279 if (num_is_fixnum (n)) 1292 return num_is_fixnum (n)
1293 ? mk_integer (SCHEME_A_ num_ivalue (n))
1294 : mk_real (SCHEME_A_ num_rvalue (n));
1295#else
1280 return mk_integer (SCHEME_A_ num_get_ivalue (n)); 1296 return mk_integer (SCHEME_A_ num_ivalue (n));
1281 else 1297#endif
1282 return mk_real (SCHEME_A_ num_get_rvalue (n));
1283} 1298}
1284 1299
1285/* allocate name to string area */ 1300/* allocate name to string area */
1286static char * 1301static char *
1287store_string (SCHEME_P_ uint32_t len_str, const char *str, char fill) 1302store_string (SCHEME_P_ uint32_t len_str, const char *str, char fill)
… …
1293 SCHEME_V->no_memory = 1; 1308 SCHEME_V->no_memory = 1;
1294 return SCHEME_V->strbuff; 1309 return SCHEME_V->strbuff;
1295 } 1310 }
1296 1311
1297 if (str) 1312 if (str)
1298 { 1313 memcpy (q, str , len_str); /* caller must ensure that *str has length len_str */
1299 int l = strlen (str);
1300
1301 if (l > len_str)
1302 l = len_str;
1303
1304 memcpy (q, str, l);
1305 q[l] = 0;
1306 }
1307 else 1314 else
1308 {
1309 memset (q, fill, len_str); 1315 memset (q, fill, len_str);
1316
1310 q[len_str] = 0; 1317 q[len_str] = 0;
1311 }
1312 1318
1313 return q; 1319 return q;
1314} 1320}
1315 1321
1316INTERFACE pointer 1322INTERFACE pointer
… …
1330 pointer x = get_cell (SCHEME_A_ NIL, NIL); 1336 pointer x = get_cell (SCHEME_A_ NIL, NIL);
1331 1337
1332 set_typeflag (x, T_STRING | T_ATOM); 1338 set_typeflag (x, T_STRING | T_ATOM);
1333 strvalue (x) = store_string (SCHEME_A_ len, str, 0); 1339 strvalue (x) = store_string (SCHEME_A_ len, str, 0);
1334 strlength (x) = len; 1340 strlength (x) = len;
1341
1335 return x; 1342 return x;
1336} 1343}
1337 1344
1338INTERFACE pointer 1345INTERFACE pointer
1339mk_string (SCHEME_P_ const char *str) 1346mk_string (SCHEME_P_ const char *str)
… …
1346{ 1353{
1347 return get_vector_object (SCHEME_A_ len, NIL); 1354 return get_vector_object (SCHEME_A_ len, NIL);
1348} 1355}
1349 1356
1350INTERFACE void 1357INTERFACE void
1351fill_vector (pointer vec, pointer obj) 1358fill_vector (pointer vec, uint32_t start, pointer obj)
1352{ 1359{
1353 int i; 1360 int i;
1354 1361
1355 for (i = 0; i < vec->object.vector.length; i++) 1362 for (i = start; i < veclength (vec); i++)
1356 vecvalue (vec)[i] = obj; 1363 vecvalue (vec)[i] = obj;
1357} 1364}
1358 1365
1366INTERFACE void
1367vector_resize (pointer vec, uint32_t newsize, pointer fill)
1368{
1369 uint32_t oldsize = veclength (vec);
1370 vecvalue (vec) = realloc (vecvalue (vec), newsize * sizeof (pointer));
1371 veclength (vec) = newsize;
1372 fill_vector (vec, oldsize, fill);
1373}
1374
1359INTERFACE pointer 1375INTERFACE pointer
1360vector_elem (pointer vec, uint32_t ielem) 1376vector_get (pointer vec, uint32_t ielem)
1361{ 1377{
1362 return vecvalue(vec)[ielem]; 1378 return vecvalue(vec)[ielem];
1363} 1379}
1364 1380
1365INTERFACE void 1381INTERFACE void
1366set_vector_elem (pointer vec, uint32_t ielem, pointer a) 1382vector_set (pointer vec, uint32_t ielem, pointer a)
1367{ 1383{
1368 vecvalue(vec)[ielem] = a; 1384 vecvalue(vec)[ielem] = a;
1369} 1385}
1370 1386
1371/* get new symbol */ 1387/* get new symbol */
… …
1379 x = oblist_add_by_name (SCHEME_A_ name); 1395 x = oblist_add_by_name (SCHEME_A_ name);
1380 1396
1381 return x; 1397 return x;
1382} 1398}
1383 1399
1384INTERFACE pointer 1400ecb_cold INTERFACE pointer
1385gensym (SCHEME_P) 1401gensym (SCHEME_P)
1386{ 1402{
1387 pointer x; 1403 pointer x;
1388
1389 for (; SCHEME_V->gensym_cnt < LONG_MAX; SCHEME_V->gensym_cnt++)
1390 {
1391 char name[40] = "gensym-"; 1404 char name[40] = "gensym-";
1392 xnum (name + 7, SCHEME_V->gensym_cnt); 1405 xnum (name + 7, ++SCHEME_V->gensym_cnt);
1393 1406
1394 /* first check oblist */ 1407 return generate_symbol (SCHEME_A_ name);
1395 x = oblist_find_by_name (SCHEME_A_ name); 1408}
1396 1409
1397 if (x == NIL) 1410static int
1398 { 1411is_gensym (SCHEME_P_ pointer x)
1399 x = oblist_add_by_name (SCHEME_A_ name); 1412{
1400 return x; 1413 return is_symbol (x) && oblist_find_by_name (SCHEME_A_ strvalue (x)) != x;
1401 }
1402 }
1403
1404 return NIL;
1405} 1414}
1406 1415
1407/* make symbol or number atom from string */ 1416/* make symbol or number atom from string */
1408static pointer 1417ecb_cold static pointer
1409mk_atom (SCHEME_P_ char *q) 1418mk_atom (SCHEME_P_ char *q)
1410{ 1419{
1411 char c, *p; 1420 char c, *p;
1412 int has_dec_point = 0; 1421 int has_dec_point = 0;
1413 int has_fp_exp = 0; 1422 int has_fp_exp = 0;
… …
1463 } 1472 }
1464 else if ((c == 'e') || (c == 'E')) 1473 else if ((c == 'e') || (c == 'E'))
1465 { 1474 {
1466 if (!has_fp_exp) 1475 if (!has_fp_exp)
1467 { 1476 {
1468 has_dec_point = 1; /* decimal point illegal 1477 has_dec_point = 1; /* decimal point illegal from now on */
1469 from now on */
1470 p++; 1478 p++;
1471 1479
1472 if ((*p == '-') || (*p == '+') || isdigit (*p)) 1480 if ((*p == '-') || (*p == '+') || isdigit (*p))
1473 continue; 1481 continue;
1474 } 1482 }
… …
1485 1493
1486 return mk_integer (SCHEME_A_ strtol (q, 0, 10)); 1494 return mk_integer (SCHEME_A_ strtol (q, 0, 10));
1487} 1495}
1488 1496
1489/* make constant */ 1497/* make constant */
1490static pointer 1498ecb_cold static pointer
1491mk_sharp_const (SCHEME_P_ char *name) 1499mk_sharp_const (SCHEME_P_ char *name)
1492{ 1500{
1493 if (!strcmp (name, "t")) 1501 if (!strcmp (name, "t"))
1494 return S_T; 1502 return S_T;
1495 else if (!strcmp (name, "f")) 1503 else if (!strcmp (name, "f"))
1496 return S_F; 1504 return S_F;
1497 else if (*name == '\\') /* #\w (character) */ 1505 else if (*name == '\\') /* #\w (character) */
1498 { 1506 {
1499 int c; 1507 int c;
1500 1508
1509 // TODO: optimise
1501 if (stricmp (name + 1, "space") == 0) 1510 if (stricmp (name + 1, "space") == 0)
1502 c = ' '; 1511 c = ' ';
1503 else if (stricmp (name + 1, "newline") == 0) 1512 else if (stricmp (name + 1, "newline") == 0)
1504 c = '\n'; 1513 c = '\n';
1505 else if (stricmp (name + 1, "return") == 0) 1514 else if (stricmp (name + 1, "return") == 0)
1506 c = '\r'; 1515 c = '\r';
1507 else if (stricmp (name + 1, "tab") == 0) 1516 else if (stricmp (name + 1, "tab") == 0)
1508 c = '\t'; 1517 c = '\t';
1518 else if (stricmp (name + 1, "alarm") == 0)
1519 c = 0x07;
1520 else if (stricmp (name + 1, "backspace") == 0)
1521 c = 0x08;
1522 else if (stricmp (name + 1, "escape") == 0)
1523 c = 0x1b;
1524 else if (stricmp (name + 1, "delete") == 0)
1525 c = 0x7f;
1526 else if (stricmp (name + 1, "null") == 0)
1527 c = 0;
1509 else if (name[1] == 'x' && name[2] != 0) 1528 else if (name[1] == 'x' && name[2] != 0)
1510 { 1529 {
1511 long c1 = strtol (name + 2, 0, 16); 1530 long c1 = strtol (name + 2, 0, 16);
1512 1531
1513 if (0 <= c1 && c1 <= UCHAR_MAX) 1532 if (0 <= c1 && c1 <= UCHAR_MAX)
… …
1527 return mk_character (SCHEME_A_ c); 1546 return mk_character (SCHEME_A_ c);
1528 } 1547 }
1529 else 1548 else
1530 { 1549 {
1531 /* identify base by string index */ 1550 /* identify base by string index */
1532 const char baseidx[17] = "ffbf" "ffff" "ofdf" "ffff" "x"; 1551 const char baseidx[18] = "ffbf" "ffff" "ofdf" "ffff" "x";
1533 char *base = strchr (baseidx, *name); 1552 char *base = strchr (baseidx, *name);
1534 1553
1535 if (base) 1554 if (base && *base)
1536 return mk_integer (SCHEME_A_ strtol (name + 1, 0, base - baseidx)); 1555 return mk_integer (SCHEME_A_ strtol (name + 1, 0, base - baseidx));
1537 1556
1538 return NIL; 1557 return NIL;
1539 } 1558 }
1540} 1559}
1541 1560
1542/* ========== garbage collector ========== */ 1561/* ========== garbage collector ========== */
1562
1563static void
1564finalize_cell (SCHEME_P_ pointer a)
1565{
1566 /* TODO, fast bitmap check? */
1567 if (is_string (a) || is_symbol (a))
1568 free (strvalue (a));
1569 else if (is_vector (a))
1570 free (vecvalue (a));
1571#if USE_PORTS
1572 else if (is_port (a))
1573 {
1574 if (port(a)->kind & port_file && port (a)->rep.stdio.closeit)
1575 port_close (SCHEME_A_ a, port_input | port_output);
1576
1577 free (port (a));
1578 }
1579#endif
1580}
1543 1581
1544/*-- 1582/*--
1545 * We use algorithm E (Knuth, The Art of Computer Programming Vol.1, 1583 * We use algorithm E (Knuth, The Art of Computer Programming Vol.1,
1546 * sec. 2.3.5), the Schorr-Deutsch-Waite link-inversion algorithm, 1584 * sec. 2.3.5), the Schorr-Deutsch-Waite link-inversion algorithm,
1547 * for marking. 1585 * for marking.
1548 * 1586 *
1549 * The exception is vectors - vectors are currently marked recursively, 1587 * The exception is vectors - vectors are currently marked recursively,
1550 * which is inherited form tinyscheme and could be fixed by having another 1588 * which is inherited form tinyscheme and could be fixed by having another
1551 * word of context in the vector 1589 * word of context in the vector
1552 */ 1590 */
1553static void 1591ecb_hot static void
1554mark (pointer a) 1592mark (pointer a)
1555{ 1593{
1556 pointer t, q, p; 1594 pointer t, q, p;
1557 1595
1558 t = 0; 1596 t = 0;
… …
1562 1600
1563 if (ecb_expect_false (is_vector (p))) 1601 if (ecb_expect_false (is_vector (p)))
1564 { 1602 {
1565 int i; 1603 int i;
1566 1604
1567 for (i = 0; i < p->object.vector.length; i++) 1605 for (i = 0; i < veclength (p); i++)
1568 mark (vecvalue (p)[i]); 1606 mark (vecvalue (p)[i]);
1569 } 1607 }
1570 1608
1571 if (is_atom (p)) 1609 if (is_atom (p))
1572 goto E6; 1610 goto E6;
… …
1615 p = q; 1653 p = q;
1616 goto E6; 1654 goto E6;
1617 } 1655 }
1618} 1656}
1619 1657
1658ecb_hot static void
1659gc_free (SCHEME_P)
1660{
1661 int i;
1662 uint32_t total = 0;
1663
1664 /* Here we scan the cells to build the free-list. */
1665 for (i = SCHEME_V->last_cell_seg; i >= 0; i--)
1666 {
1667 struct cell *end = SCHEME_V->cell_seg[i] + SCHEME_V->cell_segsize [i];
1668 struct cell *p;
1669 total += SCHEME_V->cell_segsize [i];
1670
1671 for (p = SCHEME_V->cell_seg[i]; p < end; ++p)
1672 {
1673 pointer c = POINTER (p);
1674
1675 if (is_mark (c))
1676 clrmark (c);
1677 else
1678 {
1679 /* reclaim cell */
1680 if (typeflag (c) != T_PAIR)
1681 {
1682 finalize_cell (SCHEME_A_ c);
1683 set_typeflag (c, T_PAIR);
1684 set_car (c, NIL);
1685 }
1686
1687 ++SCHEME_V->fcells;
1688 set_cdr (c, SCHEME_V->free_cell);
1689 SCHEME_V->free_cell = c;
1690 }
1691 }
1692 }
1693
1694 if (SCHEME_V->gc_verbose)
1695 {
1696 putstr (SCHEME_A_ "done: "); putnum (SCHEME_A_ SCHEME_V->fcells); putstr (SCHEME_A_ " out of "); putnum (SCHEME_A_ total); putstr (SCHEME_A_ " cells were recovered.\n");
1697 }
1698}
1699
1620/* garbage collection. parameter a, b is marked. */ 1700/* garbage collection. parameter a, b is marked. */
1621static void 1701ecb_cold static void
1622gc (SCHEME_P_ pointer a, pointer b) 1702gc (SCHEME_P_ pointer a, pointer b)
1623{ 1703{
1624 pointer p;
1625 int i; 1704 int i;
1626 1705
1627 if (SCHEME_V->gc_verbose) 1706 if (SCHEME_V->gc_verbose)
1628 putstr (SCHEME_A_ "gc..."); 1707 putstr (SCHEME_A_ "gc...");
1629 1708
… …
1645 /* Mark recent objects the interpreter doesn't know about yet. */ 1724 /* Mark recent objects the interpreter doesn't know about yet. */
1646 mark (car (S_SINK)); 1725 mark (car (S_SINK));
1647 /* Mark any older stuff above nested C calls */ 1726 /* Mark any older stuff above nested C calls */
1648 mark (SCHEME_V->c_nest); 1727 mark (SCHEME_V->c_nest);
1649 1728
1729#if USE_INTCACHE
1730 /* mark intcache */
1731 for (i = INTCACHE_MIN; i <= INTCACHE_MAX; ++i)
1732 if (SCHEME_V->intcache[i - INTCACHE_MIN])
1733 mark (SCHEME_V->intcache[i - INTCACHE_MIN]);
1734#endif
1735
1650 /* mark variables a, b */ 1736 /* mark variables a, b */
1651 mark (a); 1737 mark (a);
1652 mark (b); 1738 mark (b);
1653 1739
1654 /* garbage collect */ 1740 /* garbage collect */
1655 clrmark (NIL); 1741 clrmark (NIL);
1656 SCHEME_V->fcells = 0; 1742 SCHEME_V->fcells = 0;
1657 SCHEME_V->free_cell = NIL; 1743 SCHEME_V->free_cell = NIL;
1658 1744
1659 /* free-list is kept sorted by address so as to maintain consecutive
1660 ranges, if possible, for use with vectors. Here we scan the cells
1661 (which are also kept sorted by address) downwards to build the
1662 free-list in sorted order.
1663 */
1664 for (i = SCHEME_V->last_cell_seg; i >= 0; i--)
1665 {
1666 p = SCHEME_V->cell_seg[i] + SCHEME_V->cell_segsize [i];
1667
1668 while (--p >= SCHEME_V->cell_seg[i])
1669 {
1670 if (is_mark (p))
1671 clrmark (p);
1672 else
1673 {
1674 /* reclaim cell */
1675 if (typeflag (p) != T_FREE)
1676 {
1677 finalize_cell (SCHEME_A_ p);
1678 set_typeflag (p, T_FREE);
1679 set_car (p, NIL);
1680 }
1681
1682 ++SCHEME_V->fcells;
1683 set_cdr (p, SCHEME_V->free_cell);
1684 SCHEME_V->free_cell = p;
1685 }
1686 }
1687 }
1688
1689 if (SCHEME_V->gc_verbose) 1745 if (SCHEME_V->gc_verbose)
1690 xwrstr ("done: "); xwrnum (SCHEME_V->fcells); xwrstr (" cells were recovered.\n"); 1746 putstr (SCHEME_A_ "freeing...");
1691}
1692 1747
1693static void 1748 gc_free (SCHEME_A);
1694finalize_cell (SCHEME_P_ pointer a)
1695{
1696 /* TODO, fast bitmap check? */
1697 if (is_string (a))
1698 free (strvalue (a));
1699 else if (is_vector (a))
1700 free (vecvalue (a));
1701#if USE_PORTS
1702 else if (is_port (a))
1703 {
1704 if (a->object.port->kind & port_file && a->object.port->rep.stdio.closeit)
1705 port_close (SCHEME_A_ a, port_input | port_output);
1706
1707 free (a->object.port);
1708 }
1709#endif
1710} 1749}
1711 1750
1712/* ========== Routines for Reading ========== */ 1751/* ========== Routines for Reading ========== */
1713 1752
1714static int 1753ecb_cold static int
1715file_push (SCHEME_P_ const char *fname) 1754file_push (SCHEME_P_ const char *fname)
1716{ 1755{
1717#if USE_PORTS
1718 int fin; 1756 int fin;
1719 1757
1720 if (SCHEME_V->file_i == MAXFIL - 1) 1758 if (SCHEME_V->file_i == MAXFIL - 1)
1721 return 0; 1759 return 0;
1722 1760
… …
1728 SCHEME_V->load_stack[SCHEME_V->file_i].unget = -1; 1766 SCHEME_V->load_stack[SCHEME_V->file_i].unget = -1;
1729 SCHEME_V->load_stack[SCHEME_V->file_i].kind = port_file | port_input; 1767 SCHEME_V->load_stack[SCHEME_V->file_i].kind = port_file | port_input;
1730 SCHEME_V->load_stack[SCHEME_V->file_i].rep.stdio.file = fin; 1768 SCHEME_V->load_stack[SCHEME_V->file_i].rep.stdio.file = fin;
1731 SCHEME_V->load_stack[SCHEME_V->file_i].rep.stdio.closeit = 1; 1769 SCHEME_V->load_stack[SCHEME_V->file_i].rep.stdio.closeit = 1;
1732 SCHEME_V->nesting_stack[SCHEME_V->file_i] = 0; 1770 SCHEME_V->nesting_stack[SCHEME_V->file_i] = 0;
1733 SCHEME_V->loadport->object.port = SCHEME_V->load_stack + SCHEME_V->file_i; 1771 set_port (SCHEME_V->loadport, SCHEME_V->load_stack + SCHEME_V->file_i);
1734 1772
1735#if SHOW_ERROR_LINE 1773#if SHOW_ERROR_LINE
1736 SCHEME_V->load_stack[SCHEME_V->file_i].rep.stdio.curr_line = 0; 1774 SCHEME_V->load_stack[SCHEME_V->file_i].rep.stdio.curr_line = 0;
1737 1775
1738 if (fname) 1776 if (fname)
1739 SCHEME_V->load_stack[SCHEME_V->file_i].rep.stdio.filename = store_string (SCHEME_A_ strlen (fname), fname, 0); 1777 SCHEME_V->load_stack[SCHEME_V->file_i].rep.stdio.filename = store_string (SCHEME_A_ strlen (fname), fname, 0);
1740#endif 1778#endif
1741 } 1779 }
1742 1780
1743 return fin >= 0; 1781 return fin >= 0;
1744
1745#else
1746 return 1;
1747#endif
1748} 1782}
1749 1783
1750static void 1784ecb_cold static void
1751file_pop (SCHEME_P) 1785file_pop (SCHEME_P)
1752{ 1786{
1753 if (SCHEME_V->file_i != 0) 1787 if (SCHEME_V->file_i != 0)
1754 { 1788 {
1755 SCHEME_V->nesting = SCHEME_V->nesting_stack[SCHEME_V->file_i]; 1789 SCHEME_V->nesting = SCHEME_V->nesting_stack[SCHEME_V->file_i];
1756#if USE_PORTS 1790#if USE_PORTS
1757 port_close (SCHEME_A_ SCHEME_V->loadport, port_input); 1791 port_close (SCHEME_A_ SCHEME_V->loadport, port_input);
1758#endif 1792#endif
1759 SCHEME_V->file_i--; 1793 SCHEME_V->file_i--;
1760 SCHEME_V->loadport->object.port = SCHEME_V->load_stack + SCHEME_V->file_i; 1794 set_port (SCHEME_V->loadport, SCHEME_V->load_stack + SCHEME_V->file_i);
1761 } 1795 }
1762} 1796}
1763 1797
1764static int 1798ecb_cold static int
1765file_interactive (SCHEME_P) 1799file_interactive (SCHEME_P)
1766{ 1800{
1767#if USE_PORTS 1801#if USE_PORTS
1768 return SCHEME_V->file_i == 0 1802 return SCHEME_V->file_i == 0
1769 && SCHEME_V->load_stack[0].rep.stdio.file == STDIN_FILENO 1803 && SCHEME_V->load_stack[0].rep.stdio.file == STDIN_FILENO
1770 && (SCHEME_V->inport->object.port->kind & port_file); 1804 && (port (SCHEME_V->inport)->kind & port_file);
1771#else 1805#else
1772 return 0; 1806 return 0;
1773#endif 1807#endif
1774} 1808}
1775 1809
1776#if USE_PORTS 1810#if USE_PORTS
1777static port * 1811ecb_cold static port *
1778port_rep_from_filename (SCHEME_P_ const char *fn, int prop) 1812port_rep_from_filename (SCHEME_P_ const char *fn, int prop)
1779{ 1813{
1780 int fd; 1814 int fd;
1781 int flags; 1815 int flags;
1782 char *rw; 1816 char *rw;
… …
1805# endif 1839# endif
1806 1840
1807 return pt; 1841 return pt;
1808} 1842}
1809 1843
1810static pointer 1844ecb_cold static pointer
1811port_from_filename (SCHEME_P_ const char *fn, int prop) 1845port_from_filename (SCHEME_P_ const char *fn, int prop)
1812{ 1846{
1813 port *pt = port_rep_from_filename (SCHEME_A_ fn, prop); 1847 port *pt = port_rep_from_filename (SCHEME_A_ fn, prop);
1814 1848
1815 if (!pt && USE_ERROR_CHECKING) 1849 if (!pt && USE_ERROR_CHECKING)
1816 return NIL; 1850 return NIL;
1817 1851
1818 return mk_port (SCHEME_A_ pt); 1852 return mk_port (SCHEME_A_ pt);
1819} 1853}
1820 1854
1821static port * 1855ecb_cold static port *
1822port_rep_from_file (SCHEME_P_ int f, int prop) 1856port_rep_from_file (SCHEME_P_ int f, int prop)
1823{ 1857{
1824 port *pt = malloc (sizeof *pt); 1858 port *pt = malloc (sizeof *pt);
1825 1859
1826 if (!pt && USE_ERROR_CHECKING) 1860 if (!pt && USE_ERROR_CHECKING)
… …
1831 pt->rep.stdio.file = f; 1865 pt->rep.stdio.file = f;
1832 pt->rep.stdio.closeit = 0; 1866 pt->rep.stdio.closeit = 0;
1833 return pt; 1867 return pt;
1834} 1868}
1835 1869
1836static pointer 1870ecb_cold static pointer
1837port_from_file (SCHEME_P_ int f, int prop) 1871port_from_file (SCHEME_P_ int f, int prop)
1838{ 1872{
1839 port *pt = port_rep_from_file (SCHEME_A_ f, prop); 1873 port *pt = port_rep_from_file (SCHEME_A_ f, prop);
1840 1874
1841 if (!pt && USE_ERROR_CHECKING) 1875 if (!pt && USE_ERROR_CHECKING)
1842 return NIL; 1876 return NIL;
1843 1877
1844 return mk_port (SCHEME_A_ pt); 1878 return mk_port (SCHEME_A_ pt);
1845} 1879}
1846 1880
1847static port * 1881ecb_cold static port *
1848port_rep_from_string (SCHEME_P_ char *start, char *past_the_end, int prop) 1882port_rep_from_string (SCHEME_P_ char *start, char *past_the_end, int prop)
1849{ 1883{
1850 port *pt = malloc (sizeof (port)); 1884 port *pt = malloc (sizeof (port));
1851 1885
1852 if (!pt && USE_ERROR_CHECKING) 1886 if (!pt && USE_ERROR_CHECKING)
… …
1858 pt->rep.string.curr = start; 1892 pt->rep.string.curr = start;
1859 pt->rep.string.past_the_end = past_the_end; 1893 pt->rep.string.past_the_end = past_the_end;
1860 return pt; 1894 return pt;
1861} 1895}
1862 1896
1863static pointer 1897ecb_cold static pointer
1864port_from_string (SCHEME_P_ char *start, char *past_the_end, int prop) 1898port_from_string (SCHEME_P_ char *start, char *past_the_end, int prop)
1865{ 1899{
1866 port *pt = port_rep_from_string (SCHEME_A_ start, past_the_end, prop); 1900 port *pt = port_rep_from_string (SCHEME_A_ start, past_the_end, prop);
1867 1901
1868 if (!pt && USE_ERROR_CHECKING) 1902 if (!pt && USE_ERROR_CHECKING)
… …
1871 return mk_port (SCHEME_A_ pt); 1905 return mk_port (SCHEME_A_ pt);
1872} 1906}
1873 1907
1874# define BLOCK_SIZE 256 1908# define BLOCK_SIZE 256
1875 1909
1876static port * 1910ecb_cold static port *
1877port_rep_from_scratch (SCHEME_P) 1911port_rep_from_scratch (SCHEME_P)
1878{ 1912{
1879 char *start; 1913 char *start;
1880 port *pt = malloc (sizeof (port)); 1914 port *pt = malloc (sizeof (port));
1881 1915
… …
1895 pt->rep.string.curr = start; 1929 pt->rep.string.curr = start;
1896 pt->rep.string.past_the_end = start + BLOCK_SIZE - 1; 1930 pt->rep.string.past_the_end = start + BLOCK_SIZE - 1;
1897 return pt; 1931 return pt;
1898} 1932}
1899 1933
1900static pointer 1934ecb_cold static pointer
1901port_from_scratch (SCHEME_P) 1935port_from_scratch (SCHEME_P)
1902{ 1936{
1903 port *pt = port_rep_from_scratch (SCHEME_A); 1937 port *pt = port_rep_from_scratch (SCHEME_A);
1904 1938
1905 if (!pt && USE_ERROR_CHECKING) 1939 if (!pt && USE_ERROR_CHECKING)
1906 return NIL; 1940 return NIL;
1907 1941
1908 return mk_port (SCHEME_A_ pt); 1942 return mk_port (SCHEME_A_ pt);
1909} 1943}
1910 1944
1911static void 1945ecb_cold static void
1912port_close (SCHEME_P_ pointer p, int flag) 1946port_close (SCHEME_P_ pointer p, int flag)
1913{ 1947{
1914 port *pt = p->object.port; 1948 port *pt = port (p);
1915 1949
1916 pt->kind &= ~flag; 1950 pt->kind &= ~flag;
1917 1951
1918 if ((pt->kind & (port_input | port_output)) == 0) 1952 if ((pt->kind & (port_input | port_output)) == 0)
1919 { 1953 {
… …
1936 } 1970 }
1937} 1971}
1938#endif 1972#endif
1939 1973
1940/* get new character from input file */ 1974/* get new character from input file */
1941static int 1975ecb_cold static int
1942inchar (SCHEME_P) 1976inchar (SCHEME_P)
1943{ 1977{
1944 int c; 1978 int c;
1945 port *pt; 1979 port *pt = port (SCHEME_V->inport);
1946
1947 pt = SCHEME_V->inport->object.port;
1948 1980
1949 if (pt->kind & port_saw_EOF) 1981 if (pt->kind & port_saw_EOF)
1950 return EOF; 1982 return EOF;
1951 1983
1952 c = basic_inchar (pt); 1984 c = basic_inchar (pt);
… …
1962 } 1994 }
1963 1995
1964 return c; 1996 return c;
1965} 1997}
1966 1998
1967static int ungot = -1; 1999ecb_cold static int
1968
1969static int
1970basic_inchar (port *pt) 2000basic_inchar (port *pt)
1971{ 2001{
1972#if USE_PORTS
1973 if (pt->unget != -1) 2002 if (pt->unget != -1)
1974 { 2003 {
1975 int r = pt->unget; 2004 int r = pt->unget;
1976 pt->unget = -1; 2005 pt->unget = -1;
1977 return r; 2006 return r;
1978 } 2007 }
1979 2008
2009#if USE_PORTS
1980 if (pt->kind & port_file) 2010 if (pt->kind & port_file)
1981 { 2011 {
1982 char c; 2012 char c;
1983 2013
1984 if (!read (pt->rep.stdio.file, &c, 1)) 2014 if (!read (pt->rep.stdio.file, &c, 1))
… …
1992 return EOF; 2022 return EOF;
1993 else 2023 else
1994 return *pt->rep.string.curr++; 2024 return *pt->rep.string.curr++;
1995 } 2025 }
1996#else 2026#else
1997 if (ungot == -1)
1998 {
1999 char c; 2027 char c;
2000 if (!read (0, &c, 1)) 2028
2029 if (!read (pt->rep.stdio.file, &c, 1))
2001 return EOF; 2030 return EOF;
2002 2031
2003 ungot = c;
2004 }
2005
2006 {
2007 int r = ungot;
2008 ungot = -1;
2009 return r; 2032 return c;
2010 }
2011#endif 2033#endif
2012} 2034}
2013 2035
2014/* back character to input buffer */ 2036/* back character to input buffer */
2015static void 2037ecb_cold static void
2016backchar (SCHEME_P_ int c) 2038backchar (SCHEME_P_ int c)
2017{ 2039{
2018#if USE_PORTS 2040 port *pt = port (SCHEME_V->inport);
2019 port *pt;
2020 2041
2021 if (c == EOF) 2042 if (c == EOF)
2022 return; 2043 return;
2023 2044
2024 pt = SCHEME_V->inport->object.port;
2025 pt->unget = c; 2045 pt->unget = c;
2026#else
2027 if (c == EOF)
2028 return;
2029
2030 ungot = c;
2031#endif
2032} 2046}
2033 2047
2034#if USE_PORTS 2048#if USE_PORTS
2035static int 2049ecb_cold static int
2036realloc_port_string (SCHEME_P_ port *p) 2050realloc_port_string (SCHEME_P_ port *p)
2037{ 2051{
2038 char *start = p->rep.string.start; 2052 char *start = p->rep.string.start;
2039 size_t new_size = p->rep.string.past_the_end - start + 1 + BLOCK_SIZE; 2053 size_t new_size = p->rep.string.past_the_end - start + 1 + BLOCK_SIZE;
2040 char *str = malloc (new_size); 2054 char *str = malloc (new_size);
… …
2053 else 2067 else
2054 return 0; 2068 return 0;
2055} 2069}
2056#endif 2070#endif
2057 2071
2058INTERFACE void 2072ecb_cold static void
2059putstr (SCHEME_P_ const char *s) 2073putchars (SCHEME_P_ const char *s, int len)
2060{ 2074{
2075 port *pt = port (SCHEME_V->outport);
2076
2061#if USE_PORTS 2077#if USE_PORTS
2062 port *pt = SCHEME_V->outport->object.port;
2063
2064 if (pt->kind & port_file)
2065 write (pt->rep.stdio.file, s, strlen (s));
2066 else
2067 for (; *s; s++)
2068 if (pt->rep.string.curr != pt->rep.string.past_the_end)
2069 *pt->rep.string.curr++ = *s;
2070 else if (pt->kind & port_srfi6 && realloc_port_string (SCHEME_A_ pt))
2071 *pt->rep.string.curr++ = *s;
2072
2073#else
2074 xwrstr (s);
2075#endif
2076}
2077
2078static void
2079putchars (SCHEME_P_ const char *s, int len)
2080{
2081#if USE_PORTS
2082 port *pt = SCHEME_V->outport->object.port;
2083
2084 if (pt->kind & port_file) 2078 if (pt->kind & port_file)
2085 write (pt->rep.stdio.file, s, len); 2079 write (pt->rep.stdio.file, s, len);
2086 else 2080 else
2087 { 2081 {
2088 for (; len; len--) 2082 for (; len; len--)
… …
2093 *pt->rep.string.curr++ = *s++; 2087 *pt->rep.string.curr++ = *s++;
2094 } 2088 }
2095 } 2089 }
2096 2090
2097#else 2091#else
2098 write (1, s, len); 2092 write (1, s, len); // output not initialised
2099#endif 2093#endif
2094}
2095
2096INTERFACE void
2097putstr (SCHEME_P_ const char *s)
2098{
2099 putchars (SCHEME_A_ s, strlen (s));
2100} 2100}
2101 2101
2102INTERFACE void 2102INTERFACE void
2103putcharacter (SCHEME_P_ int c) 2103putcharacter (SCHEME_P_ int c)
2104{ 2104{
2105#if USE_PORTS
2106 port *pt = SCHEME_V->outport->object.port;
2107
2108 if (pt->kind & port_file)
2109 {
2110 char cc = c;
2111 write (pt->rep.stdio.file, &cc, 1);
2112 }
2113 else
2114 {
2115 if (pt->rep.string.curr != pt->rep.string.past_the_end)
2116 *pt->rep.string.curr++ = c;
2117 else if (pt->kind & port_srfi6 && realloc_port_string (SCHEME_A_ pt))
2118 *pt->rep.string.curr++ = c;
2119 }
2120
2121#else
2122 char cc = c; 2105 char cc = c;
2123 write (1, &c, 1); 2106
2124#endif 2107 putchars (SCHEME_A_ &cc, 1);
2125} 2108}
2126 2109
2127/* read characters up to delimiter, but cater to character constants */ 2110/* read characters up to delimiter, but cater to character constants */
2128static char * 2111ecb_cold static char *
2129readstr_upto (SCHEME_P_ char *delim) 2112readstr_upto (SCHEME_P_ int skip, const char *delim)
2130{ 2113{
2131 char *p = SCHEME_V->strbuff; 2114 char *p = SCHEME_V->strbuff + skip;
2132 2115
2133 while ((p - SCHEME_V->strbuff < sizeof (SCHEME_V->strbuff)) && !is_one_of (delim, (*p++ = inchar (SCHEME_A)))); 2116 while ((p - SCHEME_V->strbuff < sizeof (SCHEME_V->strbuff)) && !is_one_of (delim, (*p++ = inchar (SCHEME_A))));
2134 2117
2135 if (p == SCHEME_V->strbuff + 2 && p[-2] == '\\') 2118 if (p == SCHEME_V->strbuff + 2 && p[-2] == '\\')
2136 *p = 0; 2119 *p = 0;
… …
2142 2125
2143 return SCHEME_V->strbuff; 2126 return SCHEME_V->strbuff;
2144} 2127}
2145 2128
2146/* read string expression "xxx...xxx" */ 2129/* read string expression "xxx...xxx" */
2147static pointer 2130ecb_cold static pointer
2148readstrexp (SCHEME_P) 2131readstrexp (SCHEME_P_ char delim)
2149{ 2132{
2150 char *p = SCHEME_V->strbuff; 2133 char *p = SCHEME_V->strbuff;
2151 int c; 2134 int c;
2152 int c1 = 0; 2135 int c1 = 0;
2153 enum
2154 { st_ok, st_bsl, st_x1, st_x2, st_oct1, st_oct2 } state = st_ok; 2136 enum { st_ok, st_bsl, st_x1, st_x2, st_oct1, st_oct2 } state = st_ok;
2155 2137
2156 for (;;) 2138 for (;;)
2157 { 2139 {
2158 c = inchar (SCHEME_A); 2140 c = inchar (SCHEME_A);
2159 2141
… …
2161 return S_F; 2143 return S_F;
2162 2144
2163 switch (state) 2145 switch (state)
2164 { 2146 {
2165 case st_ok: 2147 case st_ok:
2166 switch (c) 2148 if (ecb_expect_false (c == delim))
2167 {
2168 case '\\':
2169 state = st_bsl;
2170 break;
2171
2172 case '"':
2173 *p = 0;
2174 return mk_counted_string (SCHEME_A_ SCHEME_V->strbuff, p - SCHEME_V->strbuff); 2149 return mk_counted_string (SCHEME_A_ SCHEME_V->strbuff, p - SCHEME_V->strbuff);
2175 2150
2176 default: 2151 if (ecb_expect_false (c == '\\'))
2152 state = st_bsl;
2153 else
2177 *p++ = c; 2154 *p++ = c;
2178 break;
2179 }
2180 2155
2181 break; 2156 break;
2182 2157
2183 case st_bsl: 2158 case st_bsl:
2184 switch (c) 2159 switch (c)
… …
2193 case '7': 2168 case '7':
2194 state = st_oct1; 2169 state = st_oct1;
2195 c1 = c - '0'; 2170 c1 = c - '0';
2196 break; 2171 break;
2197 2172
2173 case 'a': *p++ = '\a'; state = st_ok; break;
2174 case 'n': *p++ = '\n'; state = st_ok; break;
2175 case 'r': *p++ = '\r'; state = st_ok; break;
2176 case 't': *p++ = '\t'; state = st_ok; break;
2177
2178 // this overshoots the minimum requirements of r7rs
2179 case ' ':
2180 case '\t':
2181 case '\r':
2182 case '\n':
2183 skipspace (SCHEME_A);
2184 state = st_ok;
2185 break;
2186
2187 //TODO: x should end in ;, not two-digit hex
2198 case 'x': 2188 case 'x':
2199 case 'X': 2189 case 'X':
2200 state = st_x1; 2190 state = st_x1;
2201 c1 = 0; 2191 c1 = 0;
2202 break; 2192 break;
2203 2193
2204 case 'n':
2205 *p++ = '\n';
2206 state = st_ok;
2207 break;
2208
2209 case 't':
2210 *p++ = '\t';
2211 state = st_ok;
2212 break;
2213
2214 case 'r':
2215 *p++ = '\r';
2216 state = st_ok;
2217 break;
2218
2219 case '"':
2220 *p++ = '"';
2221 state = st_ok;
2222 break;
2223
2224 default: 2194 default:
2225 *p++ = c; 2195 *p++ = c;
2226 state = st_ok; 2196 state = st_ok;
2227 break; 2197 break;
2228 } 2198 }
2229 2199
2230 break; 2200 break;
2231 2201
2232 case st_x1: 2202 case st_x1:
2233 case st_x2: 2203 case st_x2:
2234 c = toupper (c); 2204 c = tolower (c);
2235 2205
2236 if (c >= '0' && c <= 'F') 2206 if (c >= '0' && c <= '9')
2237 {
2238 if (c <= '9')
2239 c1 = (c1 << 4) + c - '0'; 2207 c1 = (c1 << 4) + c - '0';
2240 else 2208 else if (c >= 'a' && c <= 'f')
2241 c1 = (c1 << 4) + c - 'A' + 10; 2209 c1 = (c1 << 4) + c - 'a' + 10;
2242
2243 if (state == st_x1)
2244 state = st_x2;
2245 else
2246 {
2247 *p++ = c1;
2248 state = st_ok;
2249 }
2250 }
2251 else 2210 else
2252 return S_F; 2211 return S_F;
2212
2213 if (state == st_x1)
2214 state = st_x2;
2215 else
2216 {
2217 *p++ = c1;
2218 state = st_ok;
2219 }
2253 2220
2254 break; 2221 break;
2255 2222
2256 case st_oct1: 2223 case st_oct1:
2257 case st_oct2: 2224 case st_oct2:
… …
2261 backchar (SCHEME_A_ c); 2228 backchar (SCHEME_A_ c);
2262 state = st_ok; 2229 state = st_ok;
2263 } 2230 }
2264 else 2231 else
2265 { 2232 {
2266 if (state == st_oct2 && c1 >= 32) 2233 if (state == st_oct2 && c1 >= ' ')
2267 return S_F; 2234 return S_F;
2268 2235
2269 c1 = (c1 << 3) + (c - '0'); 2236 c1 = (c1 << 3) + (c - '0');
2270 2237
2271 if (state == st_oct1) 2238 if (state == st_oct1)
… …
2276 state = st_ok; 2243 state = st_ok;
2277 } 2244 }
2278 } 2245 }
2279 2246
2280 break; 2247 break;
2281
2282 } 2248 }
2283 } 2249 }
2284} 2250}
2285 2251
2286/* check c is in chars */ 2252/* check c is in chars */
2287static INLINE int 2253ecb_cold int
2288is_one_of (char *s, int c) 2254is_one_of (const char *s, int c)
2289{ 2255{
2290 if (c == EOF)
2291 return 1;
2292
2293 return !!strchr (s, c); 2256 return c == EOF || !!strchr (s, c);
2294} 2257}
2295 2258
2296/* skip white characters */ 2259/* skip white characters */
2297static INLINE int 2260ecb_cold int
2298skipspace (SCHEME_P) 2261skipspace (SCHEME_P)
2299{ 2262{
2300 int c, curr_line = 0; 2263 int c, curr_line = 0;
2301 2264
2302 do 2265 do
2303 { 2266 {
2304 c = inchar (SCHEME_A); 2267 c = inchar (SCHEME_A);
2268
2305#if SHOW_ERROR_LINE 2269#if SHOW_ERROR_LINE
2306 if (c == '\n') 2270 if (ecb_expect_false (c == '\n'))
2307 curr_line++; 2271 curr_line++;
2308#endif 2272#endif
2273
2274 if (ecb_expect_false (c == EOF))
2275 return c;
2309 } 2276 }
2310 while (c == ' ' || c == '\n' || c == '\r' || c == '\t'); 2277 while (is_one_of (WHITESPACE, c));
2311 2278
2312 /* record it */ 2279 /* record it */
2313#if SHOW_ERROR_LINE 2280#if SHOW_ERROR_LINE
2314 if (SCHEME_V->load_stack[SCHEME_V->file_i].kind & port_file) 2281 if (SCHEME_V->load_stack[SCHEME_V->file_i].kind & port_file)
2315 SCHEME_V->load_stack[SCHEME_V->file_i].rep.stdio.curr_line += curr_line; 2282 SCHEME_V->load_stack[SCHEME_V->file_i].rep.stdio.curr_line += curr_line;
2316#endif 2283#endif
2317 2284
2318 if (c != EOF)
2319 {
2320 backchar (SCHEME_A_ c); 2285 backchar (SCHEME_A_ c);
2321 return 1; 2286 return 1;
2322 }
2323 else
2324 return EOF;
2325} 2287}
2326 2288
2327/* get token */ 2289/* get token */
2328static int 2290ecb_cold static int
2329token (SCHEME_P) 2291token (SCHEME_P)
2330{ 2292{
2331 int c = skipspace (SCHEME_A); 2293 int c = skipspace (SCHEME_A);
2332 2294
2333 if (c == EOF) 2295 if (c == EOF)
… …
2345 return TOK_RPAREN; 2307 return TOK_RPAREN;
2346 2308
2347 case '.': 2309 case '.':
2348 c = inchar (SCHEME_A); 2310 c = inchar (SCHEME_A);
2349 2311
2350 if (is_one_of (" \n\t", c)) 2312 if (is_one_of (WHITESPACE, c))
2351 return TOK_DOT; 2313 return TOK_DOT;
2352 else 2314 else
2353 { 2315 {
2354 //TODO: ungetc twice in a row is not supported in C
2355 backchar (SCHEME_A_ c); 2316 backchar (SCHEME_A_ c);
2356 backchar (SCHEME_A_ '.');
2357 return TOK_ATOM; 2317 return TOK_DOTATOM;
2358 } 2318 }
2319
2320 case '|':
2321 return TOK_STRATOM;
2359 2322
2360 case '\'': 2323 case '\'':
2361 return TOK_QUOTE; 2324 return TOK_QUOTE;
2362 2325
2363 case ';': 2326 case ';':
… …
2430} 2393}
2431 2394
2432/* ========== Routines for Printing ========== */ 2395/* ========== Routines for Printing ========== */
2433#define ok_abbrev(x) (is_pair(x) && cdr(x) == NIL) 2396#define ok_abbrev(x) (is_pair(x) && cdr(x) == NIL)
2434 2397
2435static void 2398ecb_cold static void
2436printslashstring (SCHEME_P_ char *p, int len) 2399printslashstring (SCHEME_P_ char *p, int len)
2437{ 2400{
2438 int i; 2401 int i;
2439 unsigned char *s = (unsigned char *) p; 2402 unsigned char *s = (unsigned char *) p;
2440 2403
… …
2495 } 2458 }
2496 2459
2497 putcharacter (SCHEME_A_ '"'); 2460 putcharacter (SCHEME_A_ '"');
2498} 2461}
2499 2462
2500
2501/* print atoms */ 2463/* print atoms */
2502static void 2464ecb_cold static void
2503printatom (SCHEME_P_ pointer l, int f) 2465printatom (SCHEME_P_ pointer l, int f)
2504{ 2466{
2505 char *p; 2467 char *p;
2506 int len; 2468 int len;
2507 2469
2508 atom2str (SCHEME_A_ l, f, &p, &len); 2470 atom2str (SCHEME_A_ l, f, &p, &len);
2509 putchars (SCHEME_A_ p, len); 2471 putchars (SCHEME_A_ p, len);
2510} 2472}
2511 2473
2512
2513/* Uses internal buffer unless string pointer is already available */ 2474/* Uses internal buffer unless string pointer is already available */
2514static void 2475ecb_cold static void
2515atom2str (SCHEME_P_ pointer l, int f, char **pp, int *plen) 2476atom2str (SCHEME_P_ pointer l, int f, char **pp, int *plen)
2516{ 2477{
2517 char *p; 2478 char *p;
2518 2479
2519 if (l == NIL) 2480 if (l == NIL)
… …
2530 { 2491 {
2531 p = SCHEME_V->strbuff; 2492 p = SCHEME_V->strbuff;
2532 2493
2533 if (f <= 1 || f == 10) /* f is the base for numbers if > 1 */ 2494 if (f <= 1 || f == 10) /* f is the base for numbers if > 1 */
2534 { 2495 {
2535 if (num_is_integer (l)) 2496 if (is_integer (l))
2536 xnum (p, ivalue_unchecked (l)); 2497 xnum (p, ivalue_unchecked (l));
2537#if USE_REAL 2498#if USE_REAL
2538 else 2499 else
2539 { 2500 {
2540 snprintf (p, STRBUFFSIZE, "%.10g", rvalue_unchecked (l)); 2501 snprintf (p, STRBUFFSIZE, "%.10g", rvalue_unchecked (l));
… …
2652 } 2613 }
2653 else if (is_symbol (l)) 2614 else if (is_symbol (l))
2654 p = symname (l); 2615 p = symname (l);
2655 else if (is_proc (l)) 2616 else if (is_proc (l))
2656 { 2617 {
2618 p = (char *)procname (l); // ok with r7rs display, but not r7rs write
2619#if 0
2657#if USE_PRINTF 2620#if USE_PRINTF
2658 p = SCHEME_V->strbuff; 2621 p = SCHEME_V->strbuff;
2659 snprintf (p, STRBUFFSIZE, "#<%s PROCEDURE %ld>", procname (l), procnum (l)); 2622 snprintf (p, STRBUFFSIZE, " PROCEDURE %ld>", procname (l), procnum (l));
2660#else 2623#else
2661 p = "#<PROCEDURE>"; 2624 p = "#<PROCEDURE>";
2625#endif
2662#endif 2626#endif
2663 } 2627 }
2664 else if (is_macro (l)) 2628 else if (is_macro (l))
2665 p = "#<MACRO>"; 2629 p = "#<MACRO>";
2666 else if (is_closure (l)) 2630 else if (is_closure (l))
… …
2677#endif 2641#endif
2678 } 2642 }
2679 else if (is_continuation (l)) 2643 else if (is_continuation (l))
2680 p = "#<CONTINUATION>"; 2644 p = "#<CONTINUATION>";
2681 else 2645 else
2646 {
2647#if USE_PRINTF
2648 p = SCHEME_V->strbuff;
2649 snprintf (p, STRBUFFSIZE, "#<ERROR %x>", (int)typeflag (l));
2650#else
2682 p = "#<ERROR>"; 2651 p = "#<ERROR>";
2652#endif
2653 }
2683 2654
2684 *pp = p; 2655 *pp = p;
2685 *plen = strlen (p); 2656 *plen = strlen (p);
2686} 2657}
2687 2658
… …
2719 return car (d); 2690 return car (d);
2720 2691
2721 p = cons (car (d), cdr (d)); 2692 p = cons (car (d), cdr (d));
2722 q = p; 2693 q = p;
2723 2694
2724 while (cdr (cdr (p)) != NIL) 2695 while (cddr (p) != NIL)
2725 { 2696 {
2726 d = cons (car (p), cdr (p)); 2697 d = cons (car (p), cdr (p));
2727 2698
2728 if (cdr (cdr (p)) != NIL) 2699 if (cddr (p) != NIL)
2729 p = cdr (d); 2700 p = cdr (d);
2730 } 2701 }
2731 2702
2732 set_cdr (p, car (cdr (p))); 2703 set_cdr (p, cadr (p));
2733 return q; 2704 return q;
2734} 2705}
2735 2706
2736/* reverse list -- produce new list */ 2707/* reverse list -- produce new list */
2737static pointer 2708ecb_hot static pointer
2738reverse (SCHEME_P_ pointer a) 2709reverse (SCHEME_P_ pointer a)
2739{ 2710{
2740 /* a must be checked by gc */ 2711 /* a must be checked by gc */
2741 pointer p = NIL; 2712 pointer p = NIL;
2742 2713
… …
2745 2716
2746 return p; 2717 return p;
2747} 2718}
2748 2719
2749/* reverse list --- in-place */ 2720/* reverse list --- in-place */
2750static pointer 2721ecb_hot static pointer
2751reverse_in_place (SCHEME_P_ pointer term, pointer list) 2722reverse_in_place (SCHEME_P_ pointer term, pointer list)
2752{ 2723{
2753 pointer result = term; 2724 pointer result = term;
2754 pointer p = list; 2725 pointer p = list;
2755 2726
… …
2763 2734
2764 return result; 2735 return result;
2765} 2736}
2766 2737
2767/* append list -- produce new list (in reverse order) */ 2738/* append list -- produce new list (in reverse order) */
2768static pointer 2739ecb_hot static pointer
2769revappend (SCHEME_P_ pointer a, pointer b) 2740revappend (SCHEME_P_ pointer a, pointer b)
2770{ 2741{
2771 pointer result = a; 2742 pointer result = a;
2772 pointer p = b; 2743 pointer p = b;
2773 2744
… …
2782 2753
2783 return S_F; /* signal an error */ 2754 return S_F; /* signal an error */
2784} 2755}
2785 2756
2786/* equivalence of atoms */ 2757/* equivalence of atoms */
2787int 2758ecb_hot int
2788eqv (pointer a, pointer b) 2759eqv (pointer a, pointer b)
2789{ 2760{
2790 if (is_string (a)) 2761 if (is_string (a))
2791 { 2762 {
2792 if (is_string (b)) 2763 if (is_string (b))
… …
2795 return 0; 2766 return 0;
2796 } 2767 }
2797 else if (is_number (a)) 2768 else if (is_number (a))
2798 { 2769 {
2799 if (is_number (b)) 2770 if (is_number (b))
2800 if (num_is_integer (a) == num_is_integer (b))
2801 return num_eq (nvalue (a), nvalue (b)); 2771 return num_cmp (nvalue (a), nvalue (b)) == 0;
2802 2772
2803 return 0; 2773 return 0;
2804 } 2774 }
2805 else if (is_character (a)) 2775 else if (is_character (a))
2806 { 2776 {
… …
2832/* () is #t in R5RS */ 2802/* () is #t in R5RS */
2833#define is_true(p) ((p) != S_F) 2803#define is_true(p) ((p) != S_F)
2834#define is_false(p) ((p) == S_F) 2804#define is_false(p) ((p) == S_F)
2835 2805
2836/* ========== Environment implementation ========== */ 2806/* ========== Environment implementation ========== */
2837
2838#if !defined(USE_ALIST_ENV) || !defined(USE_OBJECT_LIST)
2839
2840static int
2841hash_fn (const char *key, int table_size)
2842{
2843 const unsigned char *p = key;
2844 uint32_t hash = 2166136261;
2845
2846 while (*p)
2847 hash = (hash ^ *p++) * 16777619;
2848
2849 return hash % table_size;
2850}
2851#endif
2852 2807
2853#ifndef USE_ALIST_ENV 2808#ifndef USE_ALIST_ENV
2854 2809
2855/* 2810/*
2856 * In this implementation, each frame of the environment may be 2811 * In this implementation, each frame of the environment may be
… …
2865{ 2820{
2866 pointer new_frame; 2821 pointer new_frame;
2867 2822
2868 /* The interaction-environment has about 300 variables in it. */ 2823 /* The interaction-environment has about 300 variables in it. */
2869 if (old_env == NIL) 2824 if (old_env == NIL)
2870 new_frame = mk_vector (SCHEME_A_ 461); 2825 new_frame = mk_vector (SCHEME_A_ 29); // was 461
2871 else 2826 else
2872 new_frame = NIL; 2827 new_frame = NIL;
2873 2828
2874 SCHEME_V->envir = immutable_cons (new_frame, old_env); 2829 SCHEME_V->envir = immutable_cons (new_frame, old_env);
2875 setenvironment (SCHEME_V->envir); 2830 setenvironment (SCHEME_V->envir);
2876} 2831}
2877 2832
2878static INLINE void 2833static uint32_t
2834sym_hash (pointer sym, uint32_t size)
2835{
2836 uintptr_t ptr = (uintptr_t)sym;
2837
2838#if 0
2839 /* table size is prime, so why mix */
2840 ptr += ptr >> 32;
2841 ptr += ptr >> 16;
2842 ptr += ptr >> 8;
2843#endif
2844
2845 return ptr % size;
2846}
2847
2848ecb_inline void
2879new_slot_spec_in_env (SCHEME_P_ pointer env, pointer variable, pointer value) 2849new_slot_spec_in_env (SCHEME_P_ pointer env, pointer variable, pointer value)
2880{ 2850{
2881 pointer slot = immutable_cons (variable, value); 2851 pointer slot = immutable_cons (variable, value);
2882 2852
2883 if (is_vector (car (env))) 2853 if (is_vector (car (env)))
2884 { 2854 {
2885 int location = hash_fn (symname (variable), veclength (car (env))); 2855 int location = sym_hash (variable, veclength (car (env)));
2886
2887 set_vector_elem (car (env), location, immutable_cons (slot, vector_elem (car (env), location))); 2856 vector_set (car (env), location, immutable_cons (slot, vector_get (car (env), location)));
2888 } 2857 }
2889 else 2858 else
2890 set_car (env, immutable_cons (slot, car (env))); 2859 set_car (env, immutable_cons (slot, car (env)));
2891} 2860}
2892 2861
2893static pointer 2862ecb_hot static pointer
2894find_slot_in_env (SCHEME_P_ pointer env, pointer hdl, int all) 2863find_slot_in_env (SCHEME_P_ pointer env, pointer hdl, int all)
2895{ 2864{
2896 pointer x, y; 2865 pointer x, y;
2897 int location;
2898 2866
2899 for (x = env; x != NIL; x = cdr (x)) 2867 for (x = env; x != NIL; x = cdr (x))
2900 { 2868 {
2901 if (is_vector (car (x))) 2869 if (is_vector (car (x)))
2902 { 2870 {
2903 location = hash_fn (symname (hdl), veclength (car (x))); 2871 int location = sym_hash (hdl, veclength (car (x)));
2904 y = vector_elem (car (x), location); 2872 y = vector_get (car (x), location);
2905 } 2873 }
2906 else 2874 else
2907 y = car (x); 2875 y = car (x);
2908 2876
2909 for (; y != NIL; y = cdr (y)) 2877 for (; y != NIL; y = cdr (y))
2910 if (caar (y) == hdl) 2878 if (caar (y) == hdl)
2911 break; 2879 break;
2912 2880
2913 if (y != NIL) 2881 if (y != NIL)
2882 return car (y);
2883
2884 if (!all)
2914 break; 2885 break;
2915
2916 if (!all)
2917 return NIL;
2918 } 2886 }
2919
2920 if (x != NIL)
2921 return car (y);
2922 2887
2923 return NIL; 2888 return NIL;
2924} 2889}
2925 2890
2926#else /* USE_ALIST_ENV */ 2891#else /* USE_ALIST_ENV */
2927 2892
2928static INLINE void 2893static void
2929new_frame_in_env (SCHEME_P_ pointer old_env) 2894new_frame_in_env (SCHEME_P_ pointer old_env)
2930{ 2895{
2931 SCHEME_V->envir = immutable_cons (NIL, old_env); 2896 SCHEME_V->envir = immutable_cons (NIL, old_env);
2932 setenvironment (SCHEME_V->envir); 2897 setenvironment (SCHEME_V->envir);
2933} 2898}
2934 2899
2935static INLINE void 2900static void
2936new_slot_spec_in_env (SCHEME_P_ pointer env, pointer variable, pointer value) 2901new_slot_spec_in_env (SCHEME_P_ pointer env, pointer variable, pointer value)
2937{ 2902{
2938 set_car (env, immutable_cons (immutable_cons (variable, value), car (env))); 2903 set_car (env, immutable_cons (immutable_cons (variable, value), car (env)));
2939} 2904}
2940 2905
2941static pointer 2906ecb_hot static pointer
2942find_slot_in_env (SCHEME_P_ pointer env, pointer hdl, int all) 2907find_slot_in_env (SCHEME_P_ pointer env, pointer hdl, int all)
2943{ 2908{
2944 pointer x, y; 2909 pointer x, y;
2945 2910
2946 for (x = env; x != NIL; x = cdr (x)) 2911 for (x = env; x != NIL; x = cdr (x))
… …
2948 for (y = car (x); y != NIL; y = cdr (y)) 2913 for (y = car (x); y != NIL; y = cdr (y))
2949 if (caar (y) == hdl) 2914 if (caar (y) == hdl)
2950 break; 2915 break;
2951 2916
2952 if (y != NIL) 2917 if (y != NIL)
2918 return car (y);
2953 break; 2919 break;
2954 2920
2955 if (!all) 2921 if (!all)
2956 return NIL; 2922 break;
2957 } 2923 }
2958
2959 if (x != NIL)
2960 return car (y);
2961 2924
2962 return NIL; 2925 return NIL;
2963} 2926}
2964 2927
2965#endif /* USE_ALIST_ENV else */ 2928#endif /* USE_ALIST_ENV else */
2966 2929
2967static INLINE void 2930static void
2968new_slot_in_env (SCHEME_P_ pointer variable, pointer value) 2931new_slot_in_env (SCHEME_P_ pointer variable, pointer value)
2969{ 2932{
2933 assert (is_symbol (variable));//TODO: bug in current-ws/OP_LET2
2970 new_slot_spec_in_env (SCHEME_A_ SCHEME_V->envir, variable, value); 2934 new_slot_spec_in_env (SCHEME_A_ SCHEME_V->envir, variable, value);
2971} 2935}
2972 2936
2973static INLINE void 2937static void
2974set_slot_in_env (SCHEME_P_ pointer slot, pointer value) 2938set_slot_in_env (SCHEME_P_ pointer slot, pointer value)
2975{ 2939{
2976 set_cdr (slot, value); 2940 set_cdr (slot, value);
2977} 2941}
2978 2942
2979static INLINE pointer 2943static pointer
2980slot_value_in_env (pointer slot) 2944slot_value_in_env (pointer slot)
2981{ 2945{
2982 return cdr (slot); 2946 return cdr (slot);
2983} 2947}
2984 2948
2985/* ========== Evaluation Cycle ========== */ 2949/* ========== Evaluation Cycle ========== */
2986 2950
2987static pointer 2951ecb_cold static int
2988xError_1 (SCHEME_P_ const char *s, pointer a) 2952xError_1 (SCHEME_P_ const char *s, pointer a)
2989{ 2953{
2990#if USE_ERROR_HOOK
2991 pointer x;
2992 pointer hdl = SCHEME_V->ERROR_HOOK;
2993#endif
2994
2995#if USE_PRINTF 2954#if USE_PRINTF
2996#if SHOW_ERROR_LINE 2955#if SHOW_ERROR_LINE
2997 char sbuf[STRBUFFSIZE]; 2956 char sbuf[STRBUFFSIZE];
2998 2957
2999 /* make sure error is not in REPL */ 2958 /* make sure error is not in REPL */
… …
3014 } 2973 }
3015#endif 2974#endif
3016#endif 2975#endif
3017 2976
3018#if USE_ERROR_HOOK 2977#if USE_ERROR_HOOK
3019 x = find_slot_in_env (SCHEME_A_ SCHEME_V->envir, hdl, 1); 2978 pointer x = find_slot_in_env (SCHEME_A_ SCHEME_V->envir, SCHEME_V->ERROR_HOOK, 1);
3020 2979
3021 if (x != NIL) 2980 if (x != NIL)
3022 { 2981 {
3023 pointer code = a 2982 pointer code = a
3024 ? cons (cons (SCHEME_V->QUOTE, cons (a, NIL)), NIL) 2983 ? cons (cons (SCHEME_V->QUOTE, cons (a, NIL)), NIL)
… …
3027 code = cons (mk_string (SCHEME_A_ s), code); 2986 code = cons (mk_string (SCHEME_A_ s), code);
3028 setimmutable (car (code)); 2987 setimmutable (car (code));
3029 SCHEME_V->code = cons (slot_value_in_env (x), code); 2988 SCHEME_V->code = cons (slot_value_in_env (x), code);
3030 SCHEME_V->op = OP_EVAL; 2989 SCHEME_V->op = OP_EVAL;
3031 2990
3032 return S_T; 2991 return 0;
3033 } 2992 }
3034#endif 2993#endif
3035 2994
3036 if (a) 2995 if (a)
3037 SCHEME_V->args = cons (a, NIL); 2996 SCHEME_V->args = cons (a, NIL);
… …
3039 SCHEME_V->args = NIL; 2998 SCHEME_V->args = NIL;
3040 2999
3041 SCHEME_V->args = cons (mk_string (SCHEME_A_ s), SCHEME_V->args); 3000 SCHEME_V->args = cons (mk_string (SCHEME_A_ s), SCHEME_V->args);
3042 setimmutable (car (SCHEME_V->args)); 3001 setimmutable (car (SCHEME_V->args));
3043 SCHEME_V->op = OP_ERR0; 3002 SCHEME_V->op = OP_ERR0;
3003
3044 return S_T; 3004 return 0;
3045} 3005}
3046 3006
3047#define Error_1(s, a) return xError_1(SCHEME_A_ USE_ERROR_CHECKING ? s : "", a) 3007#define Error_1(s, a) return xError_1(SCHEME_A_ USE_ERROR_CHECKING ? s : "", a)
3048#define Error_0(s) Error_1 (s, 0) 3008#define Error_0(s) Error_1 (s, 0)
3049 3009
3050/* Too small to turn into function */ 3010/* Too small to turn into function */
3051#define BEGIN do { 3011#define BEGIN do {
3052#define END } while (0) 3012#define END } while (0)
3053#define s_goto(a) BEGIN \ 3013#define s_goto(a) BEGIN \
3054 SCHEME_V->op = a; \ 3014 SCHEME_V->op = a; \
3055 return S_T; END 3015 return 0; END
3056 3016
3057#define s_return(a) return xs_return (SCHEME_A_ a) 3017#define s_return(a) return xs_return (SCHEME_A_ a)
3058 3018
3059#ifndef USE_SCHEME_STACK 3019#ifndef USE_SCHEME_STACK
3060 3020
… …
3067 pointer code; 3027 pointer code;
3068}; 3028};
3069 3029
3070# define STACK_GROWTH 3 3030# define STACK_GROWTH 3
3071 3031
3072static void 3032ecb_hot static void
3073s_save (SCHEME_P_ enum scheme_opcodes op, pointer args, pointer code) 3033s_save (SCHEME_P_ enum scheme_opcodes op, pointer args, pointer code)
3074{ 3034{
3075 int nframes = (uintptr_t)SCHEME_V->dump; 3035 int nframes = (uintptr_t)SCHEME_V->dump;
3076 struct dump_stack_frame *next_frame; 3036 struct dump_stack_frame *next_frame;
3077 3037
3078 /* enough room for the next frame? */ 3038 /* enough room for the next frame? */
3079 if (nframes >= SCHEME_V->dump_size) 3039 if (ecb_expect_false (nframes >= SCHEME_V->dump_size))
3080 { 3040 {
3081 SCHEME_V->dump_size += STACK_GROWTH; 3041 SCHEME_V->dump_size += STACK_GROWTH;
3082 SCHEME_V->dump_base = realloc (SCHEME_V->dump_base, sizeof (struct dump_stack_frame) * SCHEME_V->dump_size); 3042 SCHEME_V->dump_base = realloc (SCHEME_V->dump_base, sizeof (struct dump_stack_frame) * SCHEME_V->dump_size);
3083 } 3043 }
3084 3044
3085 next_frame = SCHEME_V->dump_base + nframes; 3045 next_frame = SCHEME_V->dump_base + nframes;
3086 3046
3087 next_frame->op = op; 3047 next_frame->op = op;
3088 next_frame->args = args; 3048 next_frame->args = args;
3089 next_frame->envir = SCHEME_V->envir; 3049 next_frame->envir = SCHEME_V->envir;
3090 next_frame->code = code; 3050 next_frame->code = code;
3091 3051
3092 SCHEME_V->dump = (pointer)(uintptr_t)(nframes + 1); 3052 SCHEME_V->dump = (pointer)(uintptr_t)(nframes + 1);
3093} 3053}
3094 3054
3095static pointer 3055static ecb_hot int
3096xs_return (SCHEME_P_ pointer a) 3056xs_return (SCHEME_P_ pointer a)
3097{ 3057{
3098 int nframes = (uintptr_t)SCHEME_V->dump; 3058 int nframes = (uintptr_t)SCHEME_V->dump;
3099 struct dump_stack_frame *frame; 3059 struct dump_stack_frame *frame;
3100 3060
3101 SCHEME_V->value = a; 3061 SCHEME_V->value = a;
3102 3062
3103 if (nframes <= 0) 3063 if (nframes <= 0)
3104 return NIL; 3064 return -1;
3105 3065
3106 frame = &SCHEME_V->dump_base[--nframes]; 3066 frame = &SCHEME_V->dump_base[--nframes];
3107 SCHEME_V->op = frame->op; 3067 SCHEME_V->op = frame->op;
3108 SCHEME_V->args = frame->args; 3068 SCHEME_V->args = frame->args;
3109 SCHEME_V->envir = frame->envir; 3069 SCHEME_V->envir = frame->envir;
3110 SCHEME_V->code = frame->code; 3070 SCHEME_V->code = frame->code;
3111 SCHEME_V->dump = (pointer)(uintptr_t)nframes; 3071 SCHEME_V->dump = (pointer)(uintptr_t)nframes;
3112 3072
3113 return S_T; 3073 return 0;
3114} 3074}
3115 3075
3116static INLINE void 3076ecb_cold void
3117dump_stack_reset (SCHEME_P) 3077dump_stack_reset (SCHEME_P)
3118{ 3078{
3119 /* in this implementation, SCHEME_V->dump is the number of frames on the stack */ 3079 /* in this implementation, SCHEME_V->dump is the number of frames on the stack */
3120 SCHEME_V->dump = (pointer)+0; 3080 SCHEME_V->dump = (pointer)+0;
3121} 3081}
3122 3082
3123static INLINE void 3083ecb_cold void
3124dump_stack_initialize (SCHEME_P) 3084dump_stack_initialize (SCHEME_P)
3125{ 3085{
3126 SCHEME_V->dump_size = 0; 3086 SCHEME_V->dump_size = 0;
3127 SCHEME_V->dump_base = 0; 3087 SCHEME_V->dump_base = 0;
3128 dump_stack_reset (SCHEME_A); 3088 dump_stack_reset (SCHEME_A);
3129} 3089}
3130 3090
3131static void 3091ecb_cold static void
3132dump_stack_free (SCHEME_P) 3092dump_stack_free (SCHEME_P)
3133{ 3093{
3134 free (SCHEME_V->dump_base); 3094 free (SCHEME_V->dump_base);
3135 SCHEME_V->dump_base = 0; 3095 SCHEME_V->dump_base = 0;
3136 SCHEME_V->dump = (pointer)0; 3096 SCHEME_V->dump = (pointer)0;
3137 SCHEME_V->dump_size = 0; 3097 SCHEME_V->dump_size = 0;
3138} 3098}
3139 3099
3140static void 3100ecb_cold static void
3141dump_stack_mark (SCHEME_P) 3101dump_stack_mark (SCHEME_P)
3142{ 3102{
3143 int nframes = (uintptr_t)SCHEME_V->dump; 3103 int nframes = (uintptr_t)SCHEME_V->dump;
3144 int i; 3104 int i;
3145 3105
… …
3151 mark (frame->envir); 3111 mark (frame->envir);
3152 mark (frame->code); 3112 mark (frame->code);
3153 } 3113 }
3154} 3114}
3155 3115
3156static pointer 3116ecb_cold static pointer
3157ss_get_cont (SCHEME_P) 3117ss_get_cont (SCHEME_P)
3158{ 3118{
3159 int nframes = (uintptr_t)SCHEME_V->dump; 3119 int nframes = (uintptr_t)SCHEME_V->dump;
3160 int i; 3120 int i;
3161 3121
… …
3173 } 3133 }
3174 3134
3175 return cont; 3135 return cont;
3176} 3136}
3177 3137
3178static void 3138ecb_cold static void
3179ss_set_cont (SCHEME_P_ pointer cont) 3139ss_set_cont (SCHEME_P_ pointer cont)
3180{ 3140{
3181 int i = 0; 3141 int i = 0;
3182 struct dump_stack_frame *frame = SCHEME_V->dump_base; 3142 struct dump_stack_frame *frame = SCHEME_V->dump_base;
3183 3143
3184 while (cont != NIL) 3144 while (cont != NIL)
3185 { 3145 {
3186 frame->op = ivalue (car (cont)); cont = cdr (cont); 3146 frame->op = ivalue_unchecked (car (cont)); cont = cdr (cont);
3187 frame->args = car (cont) ; cont = cdr (cont); 3147 frame->args = car (cont) ; cont = cdr (cont);
3188 frame->envir = car (cont) ; cont = cdr (cont); 3148 frame->envir = car (cont) ; cont = cdr (cont);
3189 frame->code = car (cont) ; cont = cdr (cont); 3149 frame->code = car (cont) ; cont = cdr (cont);
3190 3150
3191 ++frame; 3151 ++frame;
3192 ++i; 3152 ++i;
3193 } 3153 }
3194 3154
3195 SCHEME_V->dump = (pointer)(uintptr_t)i; 3155 SCHEME_V->dump = (pointer)(uintptr_t)i;
3196} 3156}
3197 3157
3198#else 3158#else
3199 3159
3200static INLINE void 3160ecb_cold void
3201dump_stack_reset (SCHEME_P) 3161dump_stack_reset (SCHEME_P)
3202{ 3162{
3203 SCHEME_V->dump = NIL; 3163 SCHEME_V->dump = NIL;
3204} 3164}
3205 3165
3206static INLINE void 3166ecb_cold void
3207dump_stack_initialize (SCHEME_P) 3167dump_stack_initialize (SCHEME_P)
3208{ 3168{
3209 dump_stack_reset (SCHEME_A); 3169 dump_stack_reset (SCHEME_A);
3210} 3170}
3211 3171
3212static void 3172ecb_cold static void
3213dump_stack_free (SCHEME_P) 3173dump_stack_free (SCHEME_P)
3214{ 3174{
3215 SCHEME_V->dump = NIL; 3175 SCHEME_V->dump = NIL;
3216} 3176}
3217 3177
3218static pointer 3178ecb_hot static int
3219xs_return (SCHEME_P_ pointer a) 3179xs_return (SCHEME_P_ pointer a)
3220{ 3180{
3221 pointer dump = SCHEME_V->dump; 3181 pointer dump = SCHEME_V->dump;
3222 3182
3223 SCHEME_V->value = a; 3183 SCHEME_V->value = a;
3224 3184
3225 if (dump == NIL) 3185 if (dump == NIL)
3226 return NIL; 3186 return -1;
3227 3187
3228 SCHEME_V->op = ivalue (car (dump)); dump = cdr (dump); 3188 SCHEME_V->op = ivalue_unchecked (car (dump)); dump = cdr (dump);
3229 SCHEME_V->args = car (dump) ; dump = cdr (dump); 3189 SCHEME_V->args = car (dump) ; dump = cdr (dump);
3230 SCHEME_V->envir = car (dump) ; dump = cdr (dump); 3190 SCHEME_V->envir = car (dump) ; dump = cdr (dump);
3231 SCHEME_V->code = car (dump) ; dump = cdr (dump); 3191 SCHEME_V->code = car (dump) ; dump = cdr (dump);
3232 3192
3233 SCHEME_V->dump = dump; 3193 SCHEME_V->dump = dump;
3234 3194
3235 return S_T; 3195 return 0;
3236} 3196}
3237 3197
3238static void 3198ecb_hot static void
3239s_save (SCHEME_P_ enum scheme_opcodes op, pointer args, pointer code) 3199s_save (SCHEME_P_ enum scheme_opcodes op, pointer args, pointer code)
3240{ 3200{
3241 SCHEME_V->dump = cons (mk_integer (SCHEME_A_ op), 3201 SCHEME_V->dump = cons (mk_integer (SCHEME_A_ op),
3242 cons (args, 3202 cons (args,
3243 cons (SCHEME_V->envir, 3203 cons (SCHEME_V->envir,
3244 cons (code, 3204 cons (code,
3245 SCHEME_V->dump)))); 3205 SCHEME_V->dump))));
3246} 3206}
3247 3207
3208ecb_cold static void
3209dump_stack_mark (SCHEME_P)
3210{
3211 mark (SCHEME_V->dump);
3212}
3213
3214ecb_cold static pointer
3215ss_get_cont (SCHEME_P)
3216{
3217 return SCHEME_V->dump;
3218}
3219
3220ecb_cold static void
3221ss_set_cont (SCHEME_P_ pointer cont)
3222{
3223 SCHEME_V->dump = cont;
3224}
3225
3226#endif
3227
3228#define s_retbool(tf) s_return ((tf) ? S_T : S_F)
3229
3230#if EXPERIMENT
3231
3232static int
3233dtree (SCHEME_P_ int indent, pointer x)
3234{
3235 int c;
3236
3237 if (is_syntax (x))
3238 {
3239 printf ("%*ssyntax<%s,%d>\n", indent, "", syntaxname(x),syntaxnum(x));
3240 return 8 + 8;
3241 }
3242
3243 if (x == NIL)
3244 {
3245 printf ("%*sNIL\n", indent, "");
3246 return 3;
3247 }
3248
3249 switch (type (x))
3250 {
3251 case T_INTEGER:
3252 printf ("%*sI<%d>%p\n", indent, "", (int)ivalue_unchecked (x), x);
3253 return 32+8;
3254
3255 case T_SYMBOL:
3256 printf ("%*sS<%s>\n", indent, "", symname (x));
3257 return 24+8;
3258
3259 case T_CLOSURE:
3260 printf ("%*sS<%s>\n", indent, "", "closure");
3261 dtree (SCHEME_A_ indent + 3, cdr(x));
3262 return 32 + dtree (SCHEME_A_ indent + 3, car (x));
3263
3264 case T_PAIR:
3265 printf ("%*spair %p %p\n", indent, "", car(x),cdr(x));
3266 c = dtree (SCHEME_A_ indent + 3, car (x));
3267 c += dtree (SCHEME_A_ indent + 3, cdr (x));
3268 return c + 1;
3269
3270 case T_PORT:
3271 printf ("%*sS<%s>\n", indent, "", "port");
3272 return 24+8;
3273
3274 case T_VECTOR:
3275 printf ("%*sS<%s>\n", indent, "", "vector");
3276 return 24+8;
3277
3278 case T_ENVIRONMENT:
3279 printf ("%*sS<%s>\n", indent, "", "environment");
3280 return 0 + dtree (SCHEME_A_ indent + 3, car (x));
3281
3282 default:
3283 printf ("unhandled type %d\n", type (x));
3284 break;
3285 }
3286}
3287
3288#define DUMP(t) do { printf ("DUMP %s:%d\n", __FILE__, __LINE__); dtree (SCHEME_A_ 0, (t)); } while (0)
3289
3290typedef void *stream[1];
3291
3292#define stream_init() { 0 }
3293#define stream_data(s) ((char *)(s)[0] + sizeof (uint32_t) * 2)
3294#define stream_size(s) (((uint32_t *)(s)[0])[0] - sizeof (uint32_t) * 2)
3295#define stream_free(s) free (s[0])
3296
3297ecb_cold static void
3298stream_put (stream s, uint8_t byte)
3299{
3300 uint32_t *sp = *s;
3301 uint32_t size = sizeof (uint32_t) * 2;
3302 uint32_t offs = size;
3303
3304 if (ecb_expect_true (sp))
3305 {
3306 offs = sp[0];
3307 size = sp[1];
3308 }
3309
3310 if (ecb_expect_false (offs == size))
3311 {
3312 size *= 2;
3313 sp = realloc (sp, size);
3314 *s = sp;
3315 sp[1] = size;
3316
3317 }
3318
3319 ((uint8_t *)sp)[offs++] = byte;
3320 sp[0] = offs;
3321}
3322
3323ecb_cold static void
3324stream_put_v (stream s, uint32_t v)
3325{
3326 while (v > 0x7f)
3327 {
3328 stream_put (s, v | 0x80);
3329 v >>= 7;
3330 }
3331
3332 stream_put (s, v);
3333}
3334
3335ecb_cold static void
3336stream_put_tv (stream s, int bop, uint32_t v)
3337{
3338 printf ("put tv %d %d\n", bop, v);//D
3339 stream_put (s, bop);
3340 stream_put_v (s, v);
3341}
3342
3343ecb_cold static void
3344stream_put_stream (stream s, stream o)
3345{
3346 uint32_t i;
3347
3348 for (i = 0; i < stream_size (o); ++i)
3349 stream_put (s, stream_data (o)[i]);
3350
3351 stream_free (o);
3352}
3353
3354ecb_cold static uint32_t
3355cell_id (SCHEME_P_ pointer x)
3356{
3357 struct cell *p = CELL (x);
3358 int i;
3359
3360 for (i = SCHEME_V->last_cell_seg; i >= 0; --i)
3361 if (SCHEME_V->cell_seg[i] <= p && p < SCHEME_V->cell_seg[i] + SCHEME_V->cell_segsize[i])
3362 return i | ((p - SCHEME_V->cell_seg[i]) << CELL_NSEGMENT_LOG);
3363
3364 abort ();
3365}
3366
3367// calculates a (preferably small) integer that makes it possible to find
3368// the symbol again. if pointers were offsets into a memory area... until
3369// then, we return segment number in the low bits, and offset in the high
3370// bits.
3371// also, this function must never return 0.
3372ecb_cold static uint32_t
3373symbol_id (SCHEME_P_ pointer sym)
3374{
3375 return cell_id (SCHEME_A_ sym);
3376}
3377
3378enum byteop
3379{
3380 BOP_NIL,
3381 BOP_INTEGER,
3382 BOP_SYMBOL,
3383 BOP_DATUM,
3384 BOP_LIST_BEG,
3385 BOP_LIST_END,
3386 BOP_IF,
3387 BOP_AND,
3388 BOP_OR,
3389 BOP_CASE,
3390 BOP_COND,
3391 BOP_LET,
3392 BOP_LETAST,
3393 BOP_LETREC,
3394 BOP_DEFINE,
3395 BOP_MACRO,
3396 BOP_SET,
3397 BOP_BEGIN,
3398 BOP_LAMBDA,
3399 BOP_DELAY,
3400 BOP_OP,
3401};
3402
3403ecb_cold static void compile_expr (SCHEME_P_ stream s, pointer x);
3404
3405ecb_cold static void
3406compile_list (SCHEME_P_ stream s, pointer x)
3407{
3408 // TODO: improper list
3409
3410 for (; x != NIL; x = cdr (x))
3411 {
3412 stream t = stream_init ();
3413 compile_expr (SCHEME_A_ t, car (x));
3414 stream_put_v (s, stream_size (t));
3415 stream_put_stream (s, t);
3416 }
3417
3418 stream_put_v (s, 0);
3419}
3420
3248static void 3421static void
3249dump_stack_mark (SCHEME_P) 3422compile_if (SCHEME_P_ stream s, pointer cond, pointer ift, pointer iff)
3250{ 3423{
3251 mark (SCHEME_V->dump); 3424 stream sift = stream_init (); compile_expr (SCHEME_A_ sift, ift);
3425
3426 stream_put (s, BOP_IF);
3427 compile_expr (SCHEME_A_ s, cond);
3428 stream_put_v (s, stream_size (sift));
3429 stream_put_stream (s, sift);
3430 compile_expr (SCHEME_A_ s, iff);
3431}
3432
3433typedef uint32_t stream_fixup;
3434
3435static stream_fixup
3436stream_put_fixup (stream s)
3437{
3438 stream_put (s, 0);
3439 stream_put (s, 0);
3440
3441 return stream_size (s);
3442}
3443
3444static void
3445stream_fix_fixup (stream s, stream_fixup fixup, uint32_t target)
3446{
3447 target -= fixup;
3448 assert (target < (1 << 14));
3449 stream_data (s)[fixup - 2] = target | 0x80;
3450 stream_data (s)[fixup - 1] = target >> 7;
3451}
3452
3453static void
3454compile_and_or (SCHEME_P_ stream s, int and, pointer x)
3455{
3456 for (; cdr (x) != NIL; x = cdr (x))
3457 {
3458 stream t = stream_init ();
3459 compile_expr (SCHEME_A_ t, car (x));
3460 stream_put_v (s, stream_size (t));
3461 stream_put_stream (s, t);
3462 }
3463
3464 stream_put_v (s, 0);
3465}
3466
3467static void
3468compile_case (SCHEME_P_ stream s, pointer x)
3469{
3470 compile_expr (SCHEME_A_ s, caar (x));
3471
3472 for (;;)
3473 {
3474 x = cdr (x);
3475
3476 if (x == NIL)
3477 break;
3478
3479 compile_expr (SCHEME_A_ s, caar (x));
3480 stream t = stream_init (); compile_expr (SCHEME_A_ t, cdar (x));
3481 stream_put_v (s, stream_size (t));
3482 stream_put_stream (s, t);
3483 }
3484
3485 stream_put_v (s, 0);
3486}
3487
3488static void
3489compile_cond (SCHEME_P_ stream s, pointer x)
3490{
3491 for ( ; x != NIL; x = cdr (x))
3492 {
3493 compile_expr (SCHEME_A_ s, caar (x));
3494 stream t = stream_init (); compile_expr (SCHEME_A_ t, cdar (x));
3495 stream_put_v (s, stream_size (t));
3496 stream_put_stream (s, t);
3497 }
3498
3499 stream_put_v (s, 0);
3252} 3500}
3253 3501
3254static pointer 3502static pointer
3255ss_get_cont (SCHEME_P) 3503lookup (SCHEME_P_ pointer x)
3256{ 3504{
3257 return SCHEME_V->dump; 3505 x = find_slot_in_env (SCHEME_A_ SCHEME_V->envir, x, 1);
3258}
3259 3506
3260static void 3507 if (x != NIL)
3261ss_set_cont (SCHEME_P_ pointer cont) 3508 x = slot_value_in_env (x);
3262{
3263 SCHEME_V->dump = cont;
3264}
3265 3509
3266#endif 3510 return x;
3511}
3267 3512
3268#define s_retbool(tf) s_return ((tf) ? S_T : S_F) 3513ecb_cold static void
3514compile_expr (SCHEME_P_ stream s, pointer x)
3515{
3516 if (x == NIL)
3517 {
3518 stream_put (s, BOP_NIL);
3519 return;
3520 }
3269 3521
3270static pointer 3522 if (is_pair (x))
3523 {
3524 pointer head = car (x);
3525
3526 if (is_syntax (head))
3527 {
3528 int syn = syntaxnum (head);
3529 x = cdr (x);
3530
3531 switch (syntaxnum (head))
3532 {
3533 case OP_IF0: /* if */
3534 stream_put_v (s, BOP_IF);
3535 compile_if (SCHEME_A_ s, car (x), cadr (x), caddr (x));
3536 break;
3537
3538 case OP_OR0: /* or */
3539 stream_put_v (s, BOP_OR);
3540 compile_and_or (SCHEME_A_ s, 0, x);
3541 break;
3542
3543 case OP_AND0: /* and */
3544 stream_put_v (s, BOP_AND);
3545 compile_and_or (SCHEME_A_ s, 1, x);
3546 break;
3547
3548 case OP_CASE0: /* case */
3549 stream_put_v (s, BOP_CASE);
3550 compile_case (SCHEME_A_ s, x);
3551 break;
3552
3553 case OP_COND0: /* cond */
3554 stream_put_v (s, BOP_COND);
3555 compile_cond (SCHEME_A_ s, x);
3556 break;
3557
3558 case OP_LET0: /* let */
3559 case OP_LET0AST: /* let* */
3560 case OP_LET0REC: /* letrec */
3561 switch (syn)
3562 {
3563 case OP_LET0: stream_put (s, BOP_LET ); break;
3564 case OP_LET0AST: stream_put (s, BOP_LETAST); break;
3565 case OP_LET0REC: stream_put (s, BOP_LETREC); break;
3566 }
3567
3568 {
3569 pointer bindings = car (x);
3570 pointer body = cadr (x);
3571
3572 for (x = bindings; x != NIL; x = cdr (x))
3573 {
3574 pointer init = NIL;
3575 pointer var = car (x);
3576
3577 if (is_pair (var))
3578 {
3579 init = cdr (var);
3580 var = car (var);
3581 }
3582
3583 stream_put_v (s, symbol_id (SCHEME_A_ var));
3584 compile_expr (SCHEME_A_ s, init);
3585 }
3586
3587 stream_put_v (s, 0);
3588 compile_expr (SCHEME_A_ s, body);
3589 }
3590 break;
3591
3592 case OP_DEF0: /* define */
3593 case OP_MACRO0: /* macro */
3594 stream_put (s, syntaxnum (head) == OP_DEF0 ? BOP_DEFINE : BOP_MACRO);
3595 stream_put_v (s, cell_id (SCHEME_A_ car (x)));
3596 compile_expr (SCHEME_A_ s, cadr (x));
3597 break;
3598
3599 case OP_SET0: /* set! */
3600 stream_put (s, BOP_SET);
3601 stream_put_v (s, symbol_id (SCHEME_A_ car (x)));
3602 compile_expr (SCHEME_A_ s, cadr (x));
3603 break;
3604
3605 case OP_BEGIN: /* begin */
3606 stream_put (s, BOP_BEGIN);
3607 compile_list (SCHEME_A_ s, x);
3608 return;
3609
3610 case OP_QUOTE: /* quote */
3611 stream_put_tv (s, BOP_DATUM, cell_id (SCHEME_A_ x));
3612 break;
3613
3614 case OP_DELAY: /* delay */
3615 stream_put (s, BOP_DELAY);
3616 compile_expr (SCHEME_A_ s, x);
3617 break;
3618
3619 case OP_LAMBDA: /* lambda */
3620 {
3621 pointer formals = car (x);
3622 pointer body = cadr (x);
3623
3624 stream_put (s, BOP_LAMBDA);
3625
3626 for (; is_pair (formals); formals = cdr (formals))
3627 stream_put_v (s, symbol_id (SCHEME_A_ car (formals)));
3628
3629 stream_put_v (s, 0);
3630 stream_put_v (s, formals == NIL ? 0 : symbol_id (SCHEME_A_ formals));
3631
3632 compile_expr (SCHEME_A_ s, body);
3633 }
3634 break;
3635
3636 case OP_C0STREAM:/* cons-stream */
3637 abort ();
3638 break;
3639 }
3640
3641 return;
3642 }
3643
3644 pointer m = lookup (SCHEME_A_ head);
3645
3646 if (is_macro (m))
3647 {
3648 s_save (SCHEME_A_ OP_DEBUG2, SCHEME_V->args, SCHEME_V->code);
3649 SCHEME_V->code = m;
3650 SCHEME_V->args = cons (x, NIL);
3651 Eval_Cycle (SCHEME_A_ OP_APPLY);
3652 x = SCHEME_V->value;
3653 compile_expr (SCHEME_A_ s, SCHEME_V->value);
3654 return;
3655 }
3656
3657 stream_put (s, BOP_LIST_BEG);
3658
3659 for (; x != NIL; x = cdr (x))
3660 compile_expr (SCHEME_A_ s, car (x));
3661
3662 stream_put (s, BOP_LIST_END);
3663 return;
3664 }
3665
3666 switch (type (x))
3667 {
3668 case T_INTEGER:
3669 {
3670 IVALUE iv = ivalue_unchecked (x);
3671 iv = iv < 0 ? ((~(uint32_t)iv) << 1) | 1 : (uint32_t)iv << 1;
3672 stream_put_tv (s, BOP_INTEGER, iv);
3673 }
3674 return;
3675
3676 case T_SYMBOL:
3677 if (0)
3678 {
3679 // no can do without more analysis
3680 pointer m = lookup (SCHEME_A_ x);
3681
3682 if (is_proc (m))
3683 {
3684 printf ("compile proc %s %d\n", procname(m), procnum(m));
3685 stream_put_tv (s, BOP_SYMBOL, BOP_OP + procnum (m));
3686 }
3687 else
3688 stream_put_tv (s, BOP_SYMBOL, symbol_id (SCHEME_A_ x));
3689 }
3690
3691 stream_put_tv (s, BOP_SYMBOL, symbol_id (SCHEME_A_ x));
3692 return;
3693
3694 default:
3695 stream_put_tv (s, BOP_DATUM, cell_id (SCHEME_A_ x));
3696 break;
3697 }
3698}
3699
3700ecb_cold static int
3701compile_closure (SCHEME_P_ pointer p)
3702{
3703 stream s = stream_init ();
3704
3705 compile_list (SCHEME_A_ s, cdar (p));
3706
3707 FILE *xxd = popen ("xxd", "we");
3708 fwrite (stream_data (s), 1, stream_size (s), xxd);
3709 fclose (xxd);
3710
3711 return stream_size (s);
3712}
3713
3714#endif
3715
3716/* syntax, eval, core, ... */
3717ecb_hot static int
3271opexe_0 (SCHEME_P_ enum scheme_opcodes op) 3718opexe_0 (SCHEME_P_ enum scheme_opcodes op)
3272{ 3719{
3720 pointer args = SCHEME_V->args;
3273 pointer x, y; 3721 pointer x, y;
3274 3722
3275 switch (op) 3723 switch (op)
3276 { 3724 {
3725#if EXPERIMENT //D
3726 case OP_DEBUG:
3727 {
3728 uint32_t len = compile_closure (SCHEME_A_ car (args));
3729 printf ("len = %d\n", len);
3730 printf ("\n");
3731 s_return (S_T);
3732 }
3733
3734 case OP_DEBUG2:
3735 return -1;
3736#endif
3737
3277 case OP_LOAD: /* load */ 3738 case OP_LOAD: /* load */
3278 if (file_interactive (SCHEME_A)) 3739 if (file_interactive (SCHEME_A))
3279 { 3740 {
3280 xwrstr ("Loading "); xwrstr (strvalue (car (SCHEME_V->args))); xwrstr ("\n"); 3741 putstr (SCHEME_A_ "Loading ");
3281 //D fprintf (SCHEME_V->outport->object.port->rep.stdio.file, "Loading %s\n", strvalue (car (SCHEME_V->args))); 3742 putstr (SCHEME_A_ strvalue (car (args)));
3743 putcharacter (SCHEME_A_ '\n');
3282 } 3744 }
3283 3745
3284 if (!file_push (SCHEME_A_ strvalue (car (SCHEME_V->args)))) 3746 if (!file_push (SCHEME_A_ strvalue (car (args))))
3285 Error_1 ("unable to open", car (SCHEME_V->args)); 3747 Error_1 ("unable to open", car (args));
3286 else 3748
3287 {
3288 SCHEME_V->args = mk_integer (SCHEME_A_ SCHEME_V->file_i); 3749 SCHEME_V->args = mk_integer (SCHEME_A_ SCHEME_V->file_i);
3289 s_goto (OP_T0LVL); 3750 s_goto (OP_T0LVL);
3290 }
3291 3751
3292 case OP_T0LVL: /* top level */ 3752 case OP_T0LVL: /* top level */
3293 3753
3294 /* If we reached the end of file, this loop is done. */ 3754 /* If we reached the end of file, this loop is done. */
3295 if (SCHEME_V->loadport->object.port->kind & port_saw_EOF) 3755 if (port (SCHEME_V->loadport)->kind & port_saw_EOF)
3296 { 3756 {
3297 if (SCHEME_V->file_i == 0) 3757 if (SCHEME_V->file_i == 0)
3298 { 3758 {
3299 SCHEME_V->args = NIL; 3759 SCHEME_V->args = NIL;
3300 s_goto (OP_QUIT); 3760 s_goto (OP_QUIT);
… …
3311 /* If interactive, be nice to user. */ 3771 /* If interactive, be nice to user. */
3312 if (file_interactive (SCHEME_A)) 3772 if (file_interactive (SCHEME_A))
3313 { 3773 {
3314 SCHEME_V->envir = SCHEME_V->global_env; 3774 SCHEME_V->envir = SCHEME_V->global_env;
3315 dump_stack_reset (SCHEME_A); 3775 dump_stack_reset (SCHEME_A);
3316 putstr (SCHEME_A_ "\n"); 3776 putcharacter (SCHEME_A_ '\n');
3777#if EXPERIMENT
3778 system ("ps v $PPID");
3779#endif
3317 putstr (SCHEME_A_ prompt); 3780 putstr (SCHEME_A_ prompt);
3318 } 3781 }
3319 3782
3320 /* Set up another iteration of REPL */ 3783 /* Set up another iteration of REPL */
3321 SCHEME_V->nesting = 0; 3784 SCHEME_V->nesting = 0;
… …
3356 { 3819 {
3357 SCHEME_V->print_flag = 1; 3820 SCHEME_V->print_flag = 1;
3358 SCHEME_V->args = SCHEME_V->value; 3821 SCHEME_V->args = SCHEME_V->value;
3359 s_goto (OP_P0LIST); 3822 s_goto (OP_P0LIST);
3360 } 3823 }
3361 else 3824
3362 s_return (SCHEME_V->value); 3825 s_return (SCHEME_V->value);
3363 3826
3364 case OP_EVAL: /* main part of evaluation */ 3827 case OP_EVAL: /* main part of evaluation */
3365#if USE_TRACING 3828#if USE_TRACING
3366 if (SCHEME_V->tracing) 3829 if (SCHEME_V->tracing)
3367 { 3830 {
3368 /*s_save(SCHEME_A_ OP_VALUEPRINT,NIL,NIL); */ 3831 /*s_save(SCHEME_A_ OP_VALUEPRINT,NIL,NIL); */
3369 s_save (SCHEME_A_ OP_REAL_EVAL, SCHEME_V->args, SCHEME_V->code); 3832 s_save (SCHEME_A_ OP_REAL_EVAL, args, SCHEME_V->code);
3370 SCHEME_V->args = SCHEME_V->code; 3833 SCHEME_V->args = SCHEME_V->code;
3371 putstr (SCHEME_A_ "\nEval: "); 3834 putstr (SCHEME_A_ "\nEval: ");
3372 s_goto (OP_P0LIST); 3835 s_goto (OP_P0LIST);
3373 } 3836 }
3374 3837
… …
3378#endif 3841#endif
3379 if (is_symbol (SCHEME_V->code)) /* symbol */ 3842 if (is_symbol (SCHEME_V->code)) /* symbol */
3380 { 3843 {
3381 x = find_slot_in_env (SCHEME_A_ SCHEME_V->envir, SCHEME_V->code, 1); 3844 x = find_slot_in_env (SCHEME_A_ SCHEME_V->envir, SCHEME_V->code, 1);
3382 3845
3383 if (x != NIL) 3846 if (x == NIL)
3384 s_return (slot_value_in_env (x));
3385 else
3386 Error_1 ("eval: unbound variable:", SCHEME_V->code); 3847 Error_1 ("eval: unbound variable:", SCHEME_V->code);
3848
3849 s_return (slot_value_in_env (x));
3387 } 3850 }
3388 else if (is_pair (SCHEME_V->code)) 3851 else if (is_pair (SCHEME_V->code))
3389 { 3852 {
3390 x = car (SCHEME_V->code); 3853 x = car (SCHEME_V->code);
3391 3854
… …
3400 /* If no macros => s_save(SCHEME_A_ OP_E1ARGS, NIL, cdr(SCHEME_V->code)); */ 3863 /* If no macros => s_save(SCHEME_A_ OP_E1ARGS, NIL, cdr(SCHEME_V->code)); */
3401 SCHEME_V->code = x; 3864 SCHEME_V->code = x;
3402 s_goto (OP_EVAL); 3865 s_goto (OP_EVAL);
3403 } 3866 }
3404 } 3867 }
3405 else 3868
3406 s_return (SCHEME_V->code); 3869 s_return (SCHEME_V->code);
3407 3870
3408 case OP_E0ARGS: /* eval arguments */ 3871 case OP_E0ARGS: /* eval arguments */
3409 if (is_macro (SCHEME_V->value)) /* macro expansion */ 3872 if (ecb_expect_false (is_macro (SCHEME_V->value))) /* macro expansion */
3410 { 3873 {
3411 s_save (SCHEME_A_ OP_DOMACRO, NIL, NIL); 3874 s_save (SCHEME_A_ OP_DOMACRO, NIL, NIL);
3412 SCHEME_V->args = cons (SCHEME_V->code, NIL); 3875 SCHEME_V->args = cons (SCHEME_V->code, NIL);
3413 SCHEME_V->code = SCHEME_V->value; 3876 SCHEME_V->code = SCHEME_V->value;
3414 s_goto (OP_APPLY); 3877 s_goto (OP_APPLY);
3415 } 3878 }
3416 else 3879
3417 {
3418 SCHEME_V->code = cdr (SCHEME_V->code); 3880 SCHEME_V->code = cdr (SCHEME_V->code);
3419 s_goto (OP_E1ARGS); 3881 s_goto (OP_E1ARGS);
3420 }
3421 3882
3422 case OP_E1ARGS: /* eval arguments */ 3883 case OP_E1ARGS: /* eval arguments */
3423 SCHEME_V->args = cons (SCHEME_V->value, SCHEME_V->args); 3884 args = cons (SCHEME_V->value, args);
3424 3885
3425 if (is_pair (SCHEME_V->code)) /* continue */ 3886 if (is_pair (SCHEME_V->code)) /* continue */
3426 { 3887 {
3427 s_save (SCHEME_A_ OP_E1ARGS, SCHEME_V->args, cdr (SCHEME_V->code)); 3888 s_save (SCHEME_A_ OP_E1ARGS, args, cdr (SCHEME_V->code));
3428 SCHEME_V->code = car (SCHEME_V->code); 3889 SCHEME_V->code = car (SCHEME_V->code);
3429 SCHEME_V->args = NIL; 3890 SCHEME_V->args = NIL;
3430 s_goto (OP_EVAL); 3891 s_goto (OP_EVAL);
3431 } 3892 }
3432 else /* end */ 3893 else /* end */
3433 { 3894 {
3434 SCHEME_V->args = reverse_in_place (SCHEME_A_ NIL, SCHEME_V->args); 3895 args = reverse_in_place (SCHEME_A_ NIL, args);
3435 SCHEME_V->code = car (SCHEME_V->args); 3896 SCHEME_V->code = car (args);
3436 SCHEME_V->args = cdr (SCHEME_V->args); 3897 SCHEME_V->args = cdr (args);
3437 s_goto (OP_APPLY); 3898 s_goto (OP_APPLY);
3438 } 3899 }
3439 3900
3440#if USE_TRACING 3901#if USE_TRACING
3441
3442 case OP_TRACING: 3902 case OP_TRACING:
3443 { 3903 {
3444 int tr = SCHEME_V->tracing; 3904 int tr = SCHEME_V->tracing;
3445 3905
3446 SCHEME_V->tracing = ivalue (car (SCHEME_V->args)); 3906 SCHEME_V->tracing = ivalue_unchecked (car (args));
3447 s_return (mk_integer (SCHEME_A_ tr)); 3907 s_return (mk_integer (SCHEME_A_ tr));
3448 } 3908 }
3449
3450#endif 3909#endif
3451 3910
3452 case OP_APPLY: /* apply 'code' to 'args' */ 3911 case OP_APPLY: /* apply 'code' to 'args' */
3453#if USE_TRACING 3912#if USE_TRACING
3454 if (SCHEME_V->tracing) 3913 if (SCHEME_V->tracing)
3455 { 3914 {
3456 s_save (SCHEME_A_ OP_REAL_APPLY, SCHEME_V->args, SCHEME_V->code); 3915 s_save (SCHEME_A_ OP_REAL_APPLY, args, SCHEME_V->code);
3457 SCHEME_V->print_flag = 1; 3916 SCHEME_V->print_flag = 1;
3458 /* SCHEME_V->args=cons(SCHEME_V->code,SCHEME_V->args); */ 3917 /* args=cons(SCHEME_V->code,args); */
3459 putstr (SCHEME_A_ "\nApply to: "); 3918 putstr (SCHEME_A_ "\nApply to: ");
3460 s_goto (OP_P0LIST); 3919 s_goto (OP_P0LIST);
3461 } 3920 }
3462 3921
3463 /* fall through */ 3922 /* fall through */
3464 3923
3465 case OP_REAL_APPLY: 3924 case OP_REAL_APPLY:
3466#endif 3925#endif
3467 if (is_proc (SCHEME_V->code)) 3926 if (is_proc (SCHEME_V->code))
3468 {
3469 s_goto (procnum (SCHEME_V->code)); /* PROCEDURE */ 3927 s_goto (procnum (SCHEME_V->code)); /* PROCEDURE */
3470 }
3471 else if (is_foreign (SCHEME_V->code)) 3928 else if (is_foreign (SCHEME_V->code))
3472 { 3929 {
3473 /* Keep nested calls from GC'ing the arglist */ 3930 /* Keep nested calls from GC'ing the arglist */
3474 push_recent_alloc (SCHEME_A_ SCHEME_V->args, NIL); 3931 push_recent_alloc (SCHEME_A_ args, NIL);
3475 x = SCHEME_V->code->object.ff (SCHEME_A_ SCHEME_V->args); 3932 x = CELL(SCHEME_V->code)->object.ff (SCHEME_A_ args);
3476 3933
3477 s_return (x); 3934 s_return (x);
3478 } 3935 }
3479 else if (is_closure (SCHEME_V->code) || is_macro (SCHEME_V->code) || is_promise (SCHEME_V->code)) /* CLOSURE */ 3936 else if (is_closure (SCHEME_V->code) || is_macro (SCHEME_V->code) || is_promise (SCHEME_V->code)) /* CLOSURE */
3480 { 3937 {
3481 /* Should not accept promise */ 3938 /* Should not accept promise */
3482 /* make environment */ 3939 /* make environment */
3483 new_frame_in_env (SCHEME_A_ closure_env (SCHEME_V->code)); 3940 new_frame_in_env (SCHEME_A_ closure_env (SCHEME_V->code));
3484 3941
3485 for (x = car (closure_code (SCHEME_V->code)), y = SCHEME_V->args; is_pair (x); x = cdr (x), y = cdr (y)) 3942 for (x = car (closure_code (SCHEME_V->code)), y = args; is_pair (x); x = cdr (x), y = cdr (y))
3486 { 3943 {
3487 if (y == NIL) 3944 if (y == NIL)
3488 Error_0 ("not enough arguments"); 3945 Error_0 ("not enough arguments");
3489 else 3946 else
3490 new_slot_in_env (SCHEME_A_ car (x), car (y)); 3947 new_slot_in_env (SCHEME_A_ car (x), car (y));
… …
3508 s_goto (OP_BEGIN); 3965 s_goto (OP_BEGIN);
3509 } 3966 }
3510 else if (is_continuation (SCHEME_V->code)) /* CONTINUATION */ 3967 else if (is_continuation (SCHEME_V->code)) /* CONTINUATION */
3511 { 3968 {
3512 ss_set_cont (SCHEME_A_ cont_dump (SCHEME_V->code)); 3969 ss_set_cont (SCHEME_A_ cont_dump (SCHEME_V->code));
3513 s_return (SCHEME_V->args != NIL ? car (SCHEME_V->args) : NIL); 3970 s_return (args != NIL ? car (args) : NIL);
3514 } 3971 }
3515 else 3972
3516 Error_0 ("illegal function"); 3973 Error_0 ("illegal function");
3517 3974
3518 case OP_DOMACRO: /* do macro */ 3975 case OP_DOMACRO: /* do macro */
3519 SCHEME_V->code = SCHEME_V->value; 3976 SCHEME_V->code = SCHEME_V->value;
3520 s_goto (OP_EVAL); 3977 s_goto (OP_EVAL);
3521
3522#if 1
3523 3978
3524 case OP_LAMBDA: /* lambda */ 3979 case OP_LAMBDA: /* lambda */
3525 /* If the hook is defined, apply it to SCHEME_V->code, otherwise 3980 /* If the hook is defined, apply it to SCHEME_V->code, otherwise
3526 set SCHEME_V->value fall thru */ 3981 set SCHEME_V->value fall thru */
3527 { 3982 {
3528 pointer f = find_slot_in_env (SCHEME_A_ SCHEME_V->envir, SCHEME_V->COMPILE_HOOK, 1); 3983 pointer f = find_slot_in_env (SCHEME_A_ SCHEME_V->envir, SCHEME_V->COMPILE_HOOK, 1);
3529 3984
3530 if (f != NIL) 3985 if (f != NIL)
3531 { 3986 {
3532 s_save (SCHEME_A_ OP_LAMBDA1, SCHEME_V->args, SCHEME_V->code); 3987 s_save (SCHEME_A_ OP_LAMBDA1, args, SCHEME_V->code);
3533 SCHEME_V->args = cons (SCHEME_V->code, NIL); 3988 SCHEME_V->args = cons (SCHEME_V->code, NIL);
3534 SCHEME_V->code = slot_value_in_env (f); 3989 SCHEME_V->code = slot_value_in_env (f);
3535 s_goto (OP_APPLY); 3990 s_goto (OP_APPLY);
3536 } 3991 }
3537 3992
3538 SCHEME_V->value = SCHEME_V->code; 3993 SCHEME_V->value = SCHEME_V->code;
3539 /* Fallthru */
3540 } 3994 }
3995 /* Fallthru */
3541 3996
3542 case OP_LAMBDA1: 3997 case OP_LAMBDA1:
3543 s_return (mk_closure (SCHEME_A_ SCHEME_V->value, SCHEME_V->envir)); 3998 s_return (mk_closure (SCHEME_A_ SCHEME_V->value, SCHEME_V->envir));
3544 3999
3545#else
3546
3547 case OP_LAMBDA: /* lambda */
3548 s_return (mk_closure (SCHEME_A_ SCHEME_V->code, SCHEME_V->envir));
3549
3550#endif
3551
3552 case OP_MKCLOSURE: /* make-closure */ 4000 case OP_MKCLOSURE: /* make-closure */
3553 x = car (SCHEME_V->args); 4001 x = car (args);
3554 4002
3555 if (car (x) == SCHEME_V->LAMBDA) 4003 if (car (x) == SCHEME_V->LAMBDA)
3556 x = cdr (x); 4004 x = cdr (x);
3557 4005
3558 if (cdr (SCHEME_V->args) == NIL) 4006 if (cdr (args) == NIL)
3559 y = SCHEME_V->envir; 4007 y = SCHEME_V->envir;
3560 else 4008 else
3561 y = cadr (SCHEME_V->args); 4009 y = cadr (args);
3562 4010
3563 s_return (mk_closure (SCHEME_A_ x, y)); 4011 s_return (mk_closure (SCHEME_A_ x, y));
3564 4012
3565 case OP_QUOTE: /* quote */ 4013 case OP_QUOTE: /* quote */
3566 s_return (car (SCHEME_V->code)); 4014 s_return (car (SCHEME_V->code));
… …
3594 else 4042 else
3595 new_slot_in_env (SCHEME_A_ SCHEME_V->code, SCHEME_V->value); 4043 new_slot_in_env (SCHEME_A_ SCHEME_V->code, SCHEME_V->value);
3596 4044
3597 s_return (SCHEME_V->code); 4045 s_return (SCHEME_V->code);
3598 4046
3599
3600 case OP_DEFP: /* defined? */ 4047 case OP_DEFP: /* defined? */
3601 x = SCHEME_V->envir; 4048 x = SCHEME_V->envir;
3602 4049
3603 if (cdr (SCHEME_V->args) != NIL) 4050 if (cdr (args) != NIL)
3604 x = cadr (SCHEME_V->args); 4051 x = cadr (args);
3605 4052
3606 s_retbool (find_slot_in_env (SCHEME_A_ x, car (SCHEME_V->args), 1) != NIL); 4053 s_retbool (find_slot_in_env (SCHEME_A_ x, car (args), 1) != NIL);
3607 4054
3608 case OP_SET0: /* set! */ 4055 case OP_SET0: /* set! */
3609 if (is_immutable (car (SCHEME_V->code))) 4056 if (is_immutable (car (SCHEME_V->code)))
3610 Error_1 ("set!: unable to alter immutable variable", car (SCHEME_V->code)); 4057 Error_1 ("set!: unable to alter immutable variable", car (SCHEME_V->code));
3611 4058
… …
3622 s_return (SCHEME_V->value); 4069 s_return (SCHEME_V->value);
3623 } 4070 }
3624 else 4071 else
3625 Error_1 ("set!: unbound variable:", SCHEME_V->code); 4072 Error_1 ("set!: unbound variable:", SCHEME_V->code);
3626 4073
3627
3628 case OP_BEGIN: /* begin */ 4074 case OP_BEGIN: /* begin */
3629 if (!is_pair (SCHEME_V->code)) 4075 if (!is_pair (SCHEME_V->code))
3630 s_return (SCHEME_V->code); 4076 s_return (SCHEME_V->code);
3631 4077
3632 if (cdr (SCHEME_V->code) != NIL) 4078 if (cdr (SCHEME_V->code) != NIL)
… …
3642 4088
3643 case OP_IF1: /* if */ 4089 case OP_IF1: /* if */
3644 if (is_true (SCHEME_V->value)) 4090 if (is_true (SCHEME_V->value))
3645 SCHEME_V->code = car (SCHEME_V->code); 4091 SCHEME_V->code = car (SCHEME_V->code);
3646 else 4092 else
3647 SCHEME_V->code = cadr (SCHEME_V->code); /* (if #f 1) ==> () because 4093 SCHEME_V->code = cadr (SCHEME_V->code); /* (if #f 1) ==> () because * car(NIL) = NIL */
3648 4094
3649 * car(NIL) = NIL */
3650 s_goto (OP_EVAL); 4095 s_goto (OP_EVAL);
3651 4096
3652 case OP_LET0: /* let */ 4097 case OP_LET0: /* let */
3653 SCHEME_V->args = NIL; 4098 SCHEME_V->args = NIL;
3654 SCHEME_V->value = SCHEME_V->code; 4099 SCHEME_V->value = SCHEME_V->code;
3655 SCHEME_V->code = is_symbol (car (SCHEME_V->code)) ? cadr (SCHEME_V->code) : car (SCHEME_V->code); 4100 SCHEME_V->code = is_symbol (car (SCHEME_V->code)) ? cadr (SCHEME_V->code) : car (SCHEME_V->code);
3656 s_goto (OP_LET1); 4101 s_goto (OP_LET1);
3657 4102
3658 case OP_LET1: /* let (calculate parameters) */ 4103 case OP_LET1: /* let (calculate parameters) */
4104 case OP_LET1REC: /* letrec (calculate parameters) */
3659 SCHEME_V->args = cons (SCHEME_V->value, SCHEME_V->args); 4105 args = cons (SCHEME_V->value, args);
3660 4106
3661 if (is_pair (SCHEME_V->code)) /* continue */ 4107 if (is_pair (SCHEME_V->code)) /* continue */
3662 { 4108 {
3663 if (!is_pair (car (SCHEME_V->code)) || !is_pair (cdar (SCHEME_V->code))) 4109 if (!is_pair (car (SCHEME_V->code)) || !is_pair (cdar (SCHEME_V->code)))
3664 Error_1 ("Bad syntax of binding spec in let :", car (SCHEME_V->code)); 4110 Error_1 ("Bad syntax of binding spec in let/letrec:", car (SCHEME_V->code));
3665 4111
3666 s_save (SCHEME_A_ OP_LET1, SCHEME_V->args, cdr (SCHEME_V->code)); 4112 s_save (SCHEME_A_ op, args, cdr (SCHEME_V->code));
3667 SCHEME_V->code = cadar (SCHEME_V->code); 4113 SCHEME_V->code = cadar (SCHEME_V->code);
3668 SCHEME_V->args = NIL; 4114 SCHEME_V->args = NIL;
3669 s_goto (OP_EVAL); 4115 s_goto (OP_EVAL);
3670 } 4116 }
3671 else /* end */ 4117
3672 { 4118 /* end */
3673 SCHEME_V->args = reverse_in_place (SCHEME_A_ NIL, SCHEME_V->args); 4119 args = reverse_in_place (SCHEME_A_ NIL, args);
3674 SCHEME_V->code = car (SCHEME_V->args); 4120 SCHEME_V->code = car (args);
3675 SCHEME_V->args = cdr (SCHEME_V->args); 4121 SCHEME_V->args = cdr (args);
3676 s_goto (OP_LET2); 4122 s_goto (op == OP_LET1 ? OP_LET2 : OP_LET2REC);
3677 }
3678 4123
3679 case OP_LET2: /* let */ 4124 case OP_LET2: /* let */
3680 new_frame_in_env (SCHEME_A_ SCHEME_V->envir); 4125 new_frame_in_env (SCHEME_A_ SCHEME_V->envir);
3681 4126
3682 for (x = is_symbol (car (SCHEME_V->code)) ? cadr (SCHEME_V->code) : car (SCHEME_V->code), y = SCHEME_V->args; 4127 for (x = is_symbol (car (SCHEME_V->code)) ? cadr (SCHEME_V->code) : car (SCHEME_V->code), y = args;
3683 y != NIL; x = cdr (x), y = cdr (y)) 4128 y != NIL; x = cdr (x), y = cdr (y))
3684 new_slot_in_env (SCHEME_A_ caar (x), car (y)); 4129 new_slot_in_env (SCHEME_A_ caar (x), car (y));
3685 4130
3686 if (is_symbol (car (SCHEME_V->code))) /* named let */ 4131 if (is_symbol (car (SCHEME_V->code))) /* named let */
3687 { 4132 {
3688 for (x = cadr (SCHEME_V->code), SCHEME_V->args = NIL; x != NIL; x = cdr (x)) 4133 for (x = cadr (SCHEME_V->code), args = NIL; x != NIL; x = cdr (x))
3689 { 4134 {
3690 if (!is_pair (x)) 4135 if (!is_pair (x))
3691 Error_1 ("Bad syntax of binding in let :", x); 4136 Error_1 ("Bad syntax of binding in let:", x);
3692 4137
3693 if (!is_list (SCHEME_A_ car (x))) 4138 if (!is_list (SCHEME_A_ car (x)))
3694 Error_1 ("Bad syntax of binding in let :", car (x)); 4139 Error_1 ("Bad syntax of binding in let:", car (x));
3695 4140
3696 SCHEME_V->args = cons (caar (x), SCHEME_V->args); 4141 args = cons (caar (x), args);
3697 } 4142 }
3698 4143
3699 x =
3700 mk_closure (SCHEME_A_ cons (reverse_in_place (SCHEME_A_ NIL, SCHEME_V->args), cddr (SCHEME_V->code)), 4144 x = mk_closure (SCHEME_A_ cons (reverse_in_place (SCHEME_A_ NIL, args), cddr (SCHEME_V->code)),
3701 SCHEME_V->envir); 4145 SCHEME_V->envir);
3702 new_slot_in_env (SCHEME_A_ car (SCHEME_V->code), x); 4146 new_slot_in_env (SCHEME_A_ car (SCHEME_V->code), x);
3703 SCHEME_V->code = cddr (SCHEME_V->code); 4147 SCHEME_V->code = cddr (SCHEME_V->code);
3704 SCHEME_V->args = NIL;
3705 } 4148 }
3706 else 4149 else
3707 { 4150 {
3708 SCHEME_V->code = cdr (SCHEME_V->code); 4151 SCHEME_V->code = cdr (SCHEME_V->code);
3709 SCHEME_V->args = NIL;
3710 } 4152 }
3711 4153
4154 SCHEME_V->args = NIL;
3712 s_goto (OP_BEGIN); 4155 s_goto (OP_BEGIN);
3713 4156
3714 case OP_LET0AST: /* let* */ 4157 case OP_LET0AST: /* let* */
3715 if (car (SCHEME_V->code) == NIL) 4158 if (car (SCHEME_V->code) == NIL)
3716 { 4159 {
… …
3718 SCHEME_V->code = cdr (SCHEME_V->code); 4161 SCHEME_V->code = cdr (SCHEME_V->code);
3719 s_goto (OP_BEGIN); 4162 s_goto (OP_BEGIN);
3720 } 4163 }
3721 4164
3722 if (!is_pair (car (SCHEME_V->code)) || !is_pair (caar (SCHEME_V->code)) || !is_pair (cdaar (SCHEME_V->code))) 4165 if (!is_pair (car (SCHEME_V->code)) || !is_pair (caar (SCHEME_V->code)) || !is_pair (cdaar (SCHEME_V->code)))
3723 Error_1 ("Bad syntax of binding spec in let* :", car (SCHEME_V->code)); 4166 Error_1 ("Bad syntax of binding spec in let*:", car (SCHEME_V->code));
3724 4167
3725 s_save (SCHEME_A_ OP_LET1AST, cdr (SCHEME_V->code), car (SCHEME_V->code)); 4168 s_save (SCHEME_A_ OP_LET1AST, cdr (SCHEME_V->code), car (SCHEME_V->code));
3726 SCHEME_V->code = car (cdaar (SCHEME_V->code)); 4169 SCHEME_V->code = car (cdaar (SCHEME_V->code));
3727 s_goto (OP_EVAL); 4170 s_goto (OP_EVAL);
3728 4171
… …
3734 new_slot_in_env (SCHEME_A_ caar (SCHEME_V->code), SCHEME_V->value); 4177 new_slot_in_env (SCHEME_A_ caar (SCHEME_V->code), SCHEME_V->value);
3735 SCHEME_V->code = cdr (SCHEME_V->code); 4178 SCHEME_V->code = cdr (SCHEME_V->code);
3736 4179
3737 if (is_pair (SCHEME_V->code)) /* continue */ 4180 if (is_pair (SCHEME_V->code)) /* continue */
3738 { 4181 {
3739 s_save (SCHEME_A_ OP_LET2AST, SCHEME_V->args, SCHEME_V->code); 4182 s_save (SCHEME_A_ OP_LET2AST, args, SCHEME_V->code);
3740 SCHEME_V->code = cadar (SCHEME_V->code); 4183 SCHEME_V->code = cadar (SCHEME_V->code);
3741 SCHEME_V->args = NIL; 4184 SCHEME_V->args = NIL;
3742 s_goto (OP_EVAL); 4185 s_goto (OP_EVAL);
3743 } 4186 }
3744 else /* end */ 4187
4188 /* end */
3745 { 4189
3746 SCHEME_V->code = SCHEME_V->args; 4190 SCHEME_V->code = args;
3747 SCHEME_V->args = NIL; 4191 SCHEME_V->args = NIL;
3748 s_goto (OP_BEGIN); 4192 s_goto (OP_BEGIN);
3749 }
3750 4193
3751 case OP_LET0REC: /* letrec */ 4194 case OP_LET0REC: /* letrec */
3752 new_frame_in_env (SCHEME_A_ SCHEME_V->envir); 4195 new_frame_in_env (SCHEME_A_ SCHEME_V->envir);
3753 SCHEME_V->args = NIL; 4196 SCHEME_V->args = NIL;
3754 SCHEME_V->value = SCHEME_V->code; 4197 SCHEME_V->value = SCHEME_V->code;
3755 SCHEME_V->code = car (SCHEME_V->code); 4198 SCHEME_V->code = car (SCHEME_V->code);
3756 s_goto (OP_LET1REC); 4199 s_goto (OP_LET1REC);
3757 4200
3758 case OP_LET1REC: /* letrec (calculate parameters) */ 4201 /* OP_LET1REC handled by OP_LET1 */
3759 SCHEME_V->args = cons (SCHEME_V->value, SCHEME_V->args);
3760
3761 if (is_pair (SCHEME_V->code)) /* continue */
3762 {
3763 if (!is_pair (car (SCHEME_V->code)) || !is_pair (cdar (SCHEME_V->code)))
3764 Error_1 ("Bad syntax of binding spec in letrec :", car (SCHEME_V->code));
3765
3766 s_save (SCHEME_A_ OP_LET1REC, SCHEME_V->args, cdr (SCHEME_V->code));
3767 SCHEME_V->code = cadar (SCHEME_V->code);
3768 SCHEME_V->args = NIL;
3769 s_goto (OP_EVAL);
3770 }
3771 else /* end */
3772 {
3773 SCHEME_V->args = reverse_in_place (SCHEME_A_ NIL, SCHEME_V->args);
3774 SCHEME_V->code = car (SCHEME_V->args);
3775 SCHEME_V->args = cdr (SCHEME_V->args);
3776 s_goto (OP_LET2REC);
3777 }
3778 4202
3779 case OP_LET2REC: /* letrec */ 4203 case OP_LET2REC: /* letrec */
3780 for (x = car (SCHEME_V->code), y = SCHEME_V->args; y != NIL; x = cdr (x), y = cdr (y)) 4204 for (x = car (SCHEME_V->code), y = args; y != NIL; x = cdr (x), y = cdr (y))
3781 new_slot_in_env (SCHEME_A_ caar (x), car (y)); 4205 new_slot_in_env (SCHEME_A_ caar (x), car (y));
3782 4206
3783 SCHEME_V->code = cdr (SCHEME_V->code); 4207 SCHEME_V->code = cdr (SCHEME_V->code);
3784 SCHEME_V->args = NIL; 4208 SCHEME_V->args = NIL;
3785 s_goto (OP_BEGIN); 4209 s_goto (OP_BEGIN);
… …
3812 } 4236 }
3813 else 4237 else
3814 { 4238 {
3815 if ((SCHEME_V->code = cdr (SCHEME_V->code)) == NIL) 4239 if ((SCHEME_V->code = cdr (SCHEME_V->code)) == NIL)
3816 s_return (NIL); 4240 s_return (NIL);
3817 else 4241
3818 {
3819 s_save (SCHEME_A_ OP_COND1, NIL, SCHEME_V->code); 4242 s_save (SCHEME_A_ OP_COND1, NIL, SCHEME_V->code);
3820 SCHEME_V->code = caar (SCHEME_V->code); 4243 SCHEME_V->code = caar (SCHEME_V->code);
3821 s_goto (OP_EVAL); 4244 s_goto (OP_EVAL);
3822 }
3823 } 4245 }
3824 4246
3825 case OP_DELAY: /* delay */ 4247 case OP_DELAY: /* delay */
3826 x = mk_closure (SCHEME_A_ cons (NIL, SCHEME_V->code), SCHEME_V->envir); 4248 x = mk_closure (SCHEME_A_ cons (NIL, SCHEME_V->code), SCHEME_V->envir);
3827 set_typeflag (x, T_PROMISE); 4249 set_typeflag (x, T_PROMISE);
… …
3838 case OP_AND1: /* and */ 4260 case OP_AND1: /* and */
3839 if (is_false (SCHEME_V->value)) 4261 if (is_false (SCHEME_V->value))
3840 s_return (SCHEME_V->value); 4262 s_return (SCHEME_V->value);
3841 else if (SCHEME_V->code == NIL) 4263 else if (SCHEME_V->code == NIL)
3842 s_return (SCHEME_V->value); 4264 s_return (SCHEME_V->value);
3843 else 4265
3844 {
3845 s_save (SCHEME_A_ OP_AND1, NIL, cdr (SCHEME_V->code)); 4266 s_save (SCHEME_A_ OP_AND1, NIL, cdr (SCHEME_V->code));
3846 SCHEME_V->code = car (SCHEME_V->code); 4267 SCHEME_V->code = car (SCHEME_V->code);
3847 s_goto (OP_EVAL); 4268 s_goto (OP_EVAL);
3848 }
3849 4269
3850 case OP_OR0: /* or */ 4270 case OP_OR0: /* or */
3851 if (SCHEME_V->code == NIL) 4271 if (SCHEME_V->code == NIL)
3852 s_return (S_F); 4272 s_return (S_F);
3853 4273
… …
3858 case OP_OR1: /* or */ 4278 case OP_OR1: /* or */
3859 if (is_true (SCHEME_V->value)) 4279 if (is_true (SCHEME_V->value))
3860 s_return (SCHEME_V->value); 4280 s_return (SCHEME_V->value);
3861 else if (SCHEME_V->code == NIL) 4281 else if (SCHEME_V->code == NIL)
3862 s_return (SCHEME_V->value); 4282 s_return (SCHEME_V->value);
3863 else 4283
3864 {
3865 s_save (SCHEME_A_ OP_OR1, NIL, cdr (SCHEME_V->code)); 4284 s_save (SCHEME_A_ OP_OR1, NIL, cdr (SCHEME_V->code));
3866 SCHEME_V->code = car (SCHEME_V->code); 4285 SCHEME_V->code = car (SCHEME_V->code);
3867 s_goto (OP_EVAL); 4286 s_goto (OP_EVAL);
3868 }
3869 4287
3870 case OP_C0STREAM: /* cons-stream */ 4288 case OP_C0STREAM: /* cons-stream */
3871 s_save (SCHEME_A_ OP_C1STREAM, NIL, cdr (SCHEME_V->code)); 4289 s_save (SCHEME_A_ OP_C1STREAM, NIL, cdr (SCHEME_V->code));
3872 SCHEME_V->code = car (SCHEME_V->code); 4290 SCHEME_V->code = car (SCHEME_V->code);
3873 s_goto (OP_EVAL); 4291 s_goto (OP_EVAL);
3874 4292
3875 case OP_C1STREAM: /* cons-stream */ 4293 case OP_C1STREAM: /* cons-stream */
3876 SCHEME_V->args = SCHEME_V->value; /* save SCHEME_V->value to register SCHEME_V->args for gc */ 4294 SCHEME_V->args = SCHEME_V->value; /* save SCHEME_V->value to register args for gc */
3877 x = mk_closure (SCHEME_A_ cons (NIL, SCHEME_V->code), SCHEME_V->envir); 4295 x = mk_closure (SCHEME_A_ cons (NIL, SCHEME_V->code), SCHEME_V->envir);
3878 set_typeflag (x, T_PROMISE); 4296 set_typeflag (x, T_PROMISE);
3879 s_return (cons (SCHEME_V->args, x)); 4297 s_return (cons (args, x));
3880 4298
3881 case OP_MACRO0: /* macro */ 4299 case OP_MACRO0: /* macro */
3882 if (is_pair (car (SCHEME_V->code))) 4300 if (is_pair (car (SCHEME_V->code)))
3883 { 4301 {
3884 x = caar (SCHEME_V->code); 4302 x = caar (SCHEME_V->code);
… …
3917 { 4335 {
3918 if (!is_pair (y = caar (x))) 4336 if (!is_pair (y = caar (x)))
3919 break; 4337 break;
3920 4338
3921 for (; y != NIL; y = cdr (y)) 4339 for (; y != NIL; y = cdr (y))
3922 {
3923 if (eqv (car (y), SCHEME_V->value)) 4340 if (eqv (car (y), SCHEME_V->value))
3924 break; 4341 break;
3925 }
3926 4342
3927 if (y != NIL) 4343 if (y != NIL)
3928 break; 4344 break;
3929 } 4345 }
3930 4346
… …
3940 s_save (SCHEME_A_ OP_CASE2, NIL, cdar (x)); 4356 s_save (SCHEME_A_ OP_CASE2, NIL, cdar (x));
3941 SCHEME_V->code = caar (x); 4357 SCHEME_V->code = caar (x);
3942 s_goto (OP_EVAL); 4358 s_goto (OP_EVAL);
3943 } 4359 }
3944 } 4360 }
3945 else 4361
3946 s_return (NIL); 4362 s_return (NIL);
3947 4363
3948 case OP_CASE2: /* case */ 4364 case OP_CASE2: /* case */
3949 if (is_true (SCHEME_V->value)) 4365 if (is_true (SCHEME_V->value))
3950 s_goto (OP_BEGIN); 4366 s_goto (OP_BEGIN);
3951 else 4367
3952 s_return (NIL); 4368 s_return (NIL);
3953 4369
3954 case OP_PAPPLY: /* apply */ 4370 case OP_PAPPLY: /* apply */
3955 SCHEME_V->code = car (SCHEME_V->args); 4371 SCHEME_V->code = car (args);
3956 SCHEME_V->args = list_star (SCHEME_A_ cdr (SCHEME_V->args)); 4372 SCHEME_V->args = list_star (SCHEME_A_ cdr (args));
3957 /*SCHEME_V->args = cadr(SCHEME_V->args); */ 4373 /*SCHEME_V->args = cadr(args); */
3958 s_goto (OP_APPLY); 4374 s_goto (OP_APPLY);
3959 4375
3960 case OP_PEVAL: /* eval */ 4376 case OP_PEVAL: /* eval */
3961 if (cdr (SCHEME_V->args) != NIL) 4377 if (cdr (args) != NIL)
3962 SCHEME_V->envir = cadr (SCHEME_V->args); 4378 SCHEME_V->envir = cadr (args);
3963 4379
3964 SCHEME_V->code = car (SCHEME_V->args); 4380 SCHEME_V->code = car (args);
3965 s_goto (OP_EVAL); 4381 s_goto (OP_EVAL);
3966 4382
3967 case OP_CONTINUATION: /* call-with-current-continuation */ 4383 case OP_CONTINUATION: /* call-with-current-continuation */
3968 SCHEME_V->code = car (SCHEME_V->args); 4384 SCHEME_V->code = car (args);
3969 SCHEME_V->args = cons (mk_continuation (SCHEME_A_ ss_get_cont (SCHEME_A)), NIL); 4385 SCHEME_V->args = cons (mk_continuation (SCHEME_A_ ss_get_cont (SCHEME_A)), NIL);
3970 s_goto (OP_APPLY); 4386 s_goto (OP_APPLY);
3971 } 4387 }
3972 4388
3973 return S_T; 4389 if (USE_ERROR_CHECKING) abort ();
3974} 4390}
3975 4391
3976static pointer 4392/* math, cxr */
4393ecb_hot static int
3977opexe_2 (SCHEME_P_ enum scheme_opcodes op) 4394opexe_1 (SCHEME_P_ enum scheme_opcodes op)
3978{ 4395{
3979 pointer x; 4396 pointer args = SCHEME_V->args;
4397 pointer x = car (args);
3980 num v; 4398 num v;
3981 4399
4400 switch (op)
4401 {
3982#if USE_MATH 4402#if USE_MATH
3983 RVALUE dd;
3984#endif
3985
3986 switch (op)
3987 {
3988#if USE_MATH
3989
3990 case OP_INEX2EX: /* inexact->exact */ 4403 case OP_INEX2EX: /* inexact->exact */
3991 x = car (SCHEME_V->args);
3992
3993 if (num_is_integer (x)) 4404 if (!is_integer (x))
3994 s_return (x); 4405 {
3995 else if (modf (rvalue_unchecked (x), &dd) == 0.0) 4406 RVALUE r = rvalue_unchecked (x);
3996 s_return (mk_integer (SCHEME_A_ ivalue (x))); 4407
4408 if (r == (RVALUE)(IVALUE)r)
4409 x = mk_integer (SCHEME_A_ rvalue_unchecked (x));
3997 else 4410 else
3998 Error_1 ("inexact->exact: not integral:", x); 4411 Error_1 ("inexact->exact: not integral:", x);
4412 }
3999 4413
4000 case OP_EXP: 4414 s_return (x);
4001 x = car (SCHEME_V->args); 4415
4416 case OP_FLOOR: s_return (mk_real (SCHEME_A_ floor (rvalue (x))));
4417 case OP_CEILING: s_return (mk_real (SCHEME_A_ ceil (rvalue (x))));
4418 case OP_TRUNCATE: s_return (mk_real (SCHEME_A_ trunc (rvalue (x))));
4419 case OP_ROUND: s_return (mk_real (SCHEME_A_ nearbyint (rvalue (x))));
4420
4421 case OP_SQRT: s_return (mk_real (SCHEME_A_ sqrt (rvalue (x))));
4002 s_return (mk_real (SCHEME_A_ exp (rvalue (x)))); 4422 case OP_EXP: s_return (mk_real (SCHEME_A_ exp (rvalue (x))));
4003
4004 case OP_LOG:
4005 x = car (SCHEME_V->args);
4006 s_return (mk_real (SCHEME_A_ log (rvalue (x)))); 4423 case OP_LOG: s_return (mk_real (SCHEME_A_ log (rvalue (x))
4007 4424 / (cadr (args) == NIL ? 1 : log (rvalue (cadr (args))))));
4008 case OP_SIN:
4009 x = car (SCHEME_V->args);
4010 s_return (mk_real (SCHEME_A_ sin (rvalue (x)))); 4425 case OP_SIN: s_return (mk_real (SCHEME_A_ sin (rvalue (x))));
4011
4012 case OP_COS:
4013 x = car (SCHEME_V->args);
4014 s_return (mk_real (SCHEME_A_ cos (rvalue (x)))); 4426 case OP_COS: s_return (mk_real (SCHEME_A_ cos (rvalue (x))));
4015
4016 case OP_TAN:
4017 x = car (SCHEME_V->args);
4018 s_return (mk_real (SCHEME_A_ tan (rvalue (x)))); 4427 case OP_TAN: s_return (mk_real (SCHEME_A_ tan (rvalue (x))));
4019
4020 case OP_ASIN:
4021 x = car (SCHEME_V->args);
4022 s_return (mk_real (SCHEME_A_ asin (rvalue (x)))); 4428 case OP_ASIN: s_return (mk_real (SCHEME_A_ asin (rvalue (x))));
4023
4024 case OP_ACOS:
4025 x = car (SCHEME_V->args);
4026 s_return (mk_real (SCHEME_A_ acos (rvalue (x)))); 4429 case OP_ACOS: s_return (mk_real (SCHEME_A_ acos (rvalue (x))));
4027 4430
4028 case OP_ATAN: 4431 case OP_ATAN:
4029 x = car (SCHEME_V->args);
4030
4031 if (cdr (SCHEME_V->args) == NIL)
4032 s_return (mk_real (SCHEME_A_ atan (rvalue (x))));
4033 else
4034 {
4035 pointer y = cadr (SCHEME_V->args);
4036
4037 s_return (mk_real (SCHEME_A_ atan2 (rvalue (x), rvalue (y))));
4038 }
4039
4040 case OP_SQRT:
4041 x = car (SCHEME_V->args);
4042 s_return (mk_real (SCHEME_A_ sqrt (rvalue (x)))); 4432 s_return (mk_real (SCHEME_A_
4433 cdr (args) == NIL
4434 ? atan (rvalue (x))
4435 : atan2 (rvalue (x), rvalue (cadr (args)))));
4043 4436
4044 case OP_EXPT: 4437 case OP_EXPT:
4045 { 4438 {
4046 RVALUE result; 4439 RVALUE result;
4047 int real_result = 1; 4440 int real_result = 1;
4048 pointer y = cadr (SCHEME_V->args); 4441 pointer y = cadr (args);
4049 4442
4050 x = car (SCHEME_V->args);
4051
4052 if (num_is_integer (x) && num_is_integer (y)) 4443 if (is_integer (x) && is_integer (y))
4053 real_result = 0; 4444 real_result = 0;
4054 4445
4055 /* This 'if' is an R5RS compatibility fix. */ 4446 /* This 'if' is an R5RS compatibility fix. */
4056 /* NOTE: Remove this 'if' fix for R6RS. */ 4447 /* NOTE: Remove this 'if' fix for R6RS. */
4057 if (rvalue (x) == 0 && rvalue (y) < 0) 4448 if (rvalue (x) == 0 && rvalue (y) < 0)
4058 result = 0.0; 4449 result = 0;
4059 else 4450 else
4060 result = pow (rvalue (x), rvalue (y)); 4451 result = pow (rvalue (x), rvalue (y));
4061 4452
4062 /* Before returning integer result make sure we can. */ 4453 /* Before returning integer result make sure we can. */
4063 /* If the test fails, result is too big for integer. */ 4454 /* If the test fails, result is too big for integer. */
4064 if (!real_result) 4455 if (!real_result)
4065 { 4456 {
4066 long result_as_long = (long) result; 4457 long result_as_long = result;
4067 4458
4068 if (result != (RVALUE) result_as_long) 4459 if (result != result_as_long)
4069 real_result = 1; 4460 real_result = 1;
4070 } 4461 }
4071 4462
4072 if (real_result) 4463 if (real_result)
4073 s_return (mk_real (SCHEME_A_ result)); 4464 s_return (mk_real (SCHEME_A_ result));
4074 else 4465 else
4075 s_return (mk_integer (SCHEME_A_ result)); 4466 s_return (mk_integer (SCHEME_A_ result));
4076 } 4467 }
4077
4078 case OP_FLOOR:
4079 x = car (SCHEME_V->args);
4080 s_return (mk_real (SCHEME_A_ floor (rvalue (x))));
4081
4082 case OP_CEILING:
4083 x = car (SCHEME_V->args);
4084 s_return (mk_real (SCHEME_A_ ceil (rvalue (x))));
4085
4086 case OP_TRUNCATE:
4087 {
4088 RVALUE rvalue_of_x;
4089
4090 x = car (SCHEME_V->args);
4091 rvalue_of_x = rvalue (x);
4092
4093 if (rvalue_of_x > 0)
4094 s_return (mk_real (SCHEME_A_ floor (rvalue_of_x)));
4095 else
4096 s_return (mk_real (SCHEME_A_ ceil (rvalue_of_x)));
4097 }
4098
4099 case OP_ROUND:
4100 x = car (SCHEME_V->args);
4101
4102 if (num_is_integer (x))
4103 s_return (x);
4104
4105 s_return (mk_real (SCHEME_A_ round_per_R5RS (rvalue (x))));
4106#endif 4468#endif
4107 4469
4108 case OP_ADD: /* + */ 4470 case OP_ADD: /* + */
4109 v = num_zero; 4471 v = num_zero;
4110 4472
4111 for (x = SCHEME_V->args; x != NIL; x = cdr (x)) 4473 for (x = args; x != NIL; x = cdr (x))
4112 v = num_add (v, nvalue (car (x))); 4474 v = num_op (NUM_ADD, v, nvalue (car (x)));
4113 4475
4114 s_return (mk_number (SCHEME_A_ v)); 4476 s_return (mk_number (SCHEME_A_ v));
4115 4477
4116 case OP_MUL: /* * */ 4478 case OP_MUL: /* * */
4117 v = num_one; 4479 v = num_one;
4118 4480
4119 for (x = SCHEME_V->args; x != NIL; x = cdr (x)) 4481 for (x = args; x != NIL; x = cdr (x))
4120 v = num_mul (v, nvalue (car (x))); 4482 v = num_op (NUM_MUL, v, nvalue (car (x)));
4121 4483
4122 s_return (mk_number (SCHEME_A_ v)); 4484 s_return (mk_number (SCHEME_A_ v));
4123 4485
4124 case OP_SUB: /* - */ 4486 case OP_SUB: /* - */
4125 if (cdr (SCHEME_V->args) == NIL) 4487 if (cdr (args) == NIL)
4126 { 4488 {
4127 x = SCHEME_V->args; 4489 x = args;
4128 v = num_zero; 4490 v = num_zero;
4129 } 4491 }
4130 else 4492 else
4131 { 4493 {
4132 x = cdr (SCHEME_V->args); 4494 x = cdr (args);
4133 v = nvalue (car (SCHEME_V->args)); 4495 v = nvalue (car (args));
4134 } 4496 }
4135 4497
4136 for (; x != NIL; x = cdr (x)) 4498 for (; x != NIL; x = cdr (x))
4137 v = num_sub (v, nvalue (car (x))); 4499 v = num_op (NUM_SUB, v, nvalue (car (x)));
4138 4500
4139 s_return (mk_number (SCHEME_A_ v)); 4501 s_return (mk_number (SCHEME_A_ v));
4140 4502
4141 case OP_DIV: /* / */ 4503 case OP_DIV: /* / */
4142 if (cdr (SCHEME_V->args) == NIL) 4504 if (cdr (args) == NIL)
4143 { 4505 {
4144 x = SCHEME_V->args; 4506 x = args;
4145 v = num_one; 4507 v = num_one;
4146 } 4508 }
4147 else 4509 else
4148 { 4510 {
4149 x = cdr (SCHEME_V->args); 4511 x = cdr (args);
4150 v = nvalue (car (SCHEME_V->args)); 4512 v = nvalue (car (args));
4151 } 4513 }
4152 4514
4153 for (; x != NIL; x = cdr (x)) 4515 for (; x != NIL; x = cdr (x))
4516 if (!is_zero_rvalue (rvalue (car (x))))
4517 v = num_div (v, nvalue (car (x)));
4518 else
4519 Error_0 ("/: division by zero");
4520
4521 s_return (mk_number (SCHEME_A_ v));
4522
4523 case OP_INTDIV: /* quotient */
4524 if (cdr (args) == NIL)
4154 { 4525 {
4155 if (!is_zero_rvalue (rvalue (car (x))))
4156 v = num_div (v, nvalue (car (x)));
4157 else
4158 Error_0 ("/: division by zero");
4159 }
4160
4161 s_return (mk_number (SCHEME_A_ v));
4162
4163 case OP_INTDIV: /* quotient */
4164 if (cdr (SCHEME_V->args) == NIL)
4165 {
4166 x = SCHEME_V->args; 4526 x = args;
4167 v = num_one; 4527 v = num_one;
4168 } 4528 }
4169 else 4529 else
4170 { 4530 {
4171 x = cdr (SCHEME_V->args); 4531 x = cdr (args);
4172 v = nvalue (car (SCHEME_V->args)); 4532 v = nvalue (car (args));
4173 } 4533 }
4174 4534
4175 for (; x != NIL; x = cdr (x)) 4535 for (; x != NIL; x = cdr (x))
4176 { 4536 {
4177 if (ivalue (car (x)) != 0) 4537 if (ivalue (car (x)) != 0)
4178 v = num_intdiv (v, nvalue (car (x))); 4538 v = num_op (NUM_INTDIV, v, nvalue (car (x)));
4179 else 4539 else
4180 Error_0 ("quotient: division by zero"); 4540 Error_0 ("quotient: division by zero");
4181 } 4541 }
4182 4542
4183 s_return (mk_number (SCHEME_A_ v)); 4543 s_return (mk_number (SCHEME_A_ v));
4184 4544
4185 case OP_REM: /* remainder */ 4545 case OP_REM: /* remainder */
4186 v = nvalue (car (SCHEME_V->args)); 4546 v = nvalue (x);
4187 4547
4188 if (ivalue (cadr (SCHEME_V->args)) != 0) 4548 if (ivalue (cadr (args)) != 0)
4189 v = num_rem (v, nvalue (cadr (SCHEME_V->args))); 4549 v = num_rem (v, nvalue (cadr (args)));
4190 else 4550 else
4191 Error_0 ("remainder: division by zero"); 4551 Error_0 ("remainder: division by zero");
4192 4552
4193 s_return (mk_number (SCHEME_A_ v)); 4553 s_return (mk_number (SCHEME_A_ v));
4194 4554
4195 case OP_MOD: /* modulo */ 4555 case OP_MOD: /* modulo */
4196 v = nvalue (car (SCHEME_V->args)); 4556 v = nvalue (x);
4197 4557
4198 if (ivalue (cadr (SCHEME_V->args)) != 0) 4558 if (ivalue (cadr (args)) != 0)
4199 v = num_mod (v, nvalue (cadr (SCHEME_V->args))); 4559 v = num_mod (v, nvalue (cadr (args)));
4200 else 4560 else
4201 Error_0 ("modulo: division by zero"); 4561 Error_0 ("modulo: division by zero");
4202 4562
4203 s_return (mk_number (SCHEME_A_ v)); 4563 s_return (mk_number (SCHEME_A_ v));
4204 4564
4205 case OP_CAR: /* car */ 4565 /* the compiler will optimize this mess... */
4206 s_return (caar (SCHEME_V->args)); 4566 case OP_CAR: op_car: s_return (car (x));
4207 4567 case OP_CDR: op_cdr: s_return (cdr (x));
4208 case OP_CDR: /* cdr */ 4568 case OP_CAAR: op_caar: x = car (x); goto op_car;
4209 s_return (cdar (SCHEME_V->args)); 4569 case OP_CADR: op_cadr: x = cdr (x); goto op_car;
4570 case OP_CDAR: op_cdar: x = car (x); goto op_cdr;
4571 case OP_CDDR: op_cddr: x = cdr (x); goto op_cdr;
4572 case OP_CAAAR: op_caaar: x = car (x); goto op_caar;
4573 case OP_CAADR: op_caadr: x = cdr (x); goto op_caar;
4574 case OP_CADAR: op_cadar: x = car (x); goto op_cadr;
4575 case OP_CADDR: op_caddr: x = cdr (x); goto op_cadr;
4576 case OP_CDAAR: op_cdaar: x = car (x); goto op_cdar;
4577 case OP_CDADR: op_cdadr: x = cdr (x); goto op_cdar;
4578 case OP_CDDAR: op_cddar: x = car (x); goto op_cddr;
4579 case OP_CDDDR: op_cdddr: x = cdr (x); goto op_cddr;
4580 case OP_CAAAAR: x = car (x); goto op_caaar;
4581 case OP_CAAADR: x = cdr (x); goto op_caaar;
4582 case OP_CAADAR: x = car (x); goto op_caadr;
4583 case OP_CAADDR: x = cdr (x); goto op_caadr;
4584 case OP_CADAAR: x = car (x); goto op_cadar;
4585 case OP_CADADR: x = cdr (x); goto op_cadar;
4586 case OP_CADDAR: x = car (x); goto op_caddr;
4587 case OP_CADDDR: x = cdr (x); goto op_caddr;
4588 case OP_CDAAAR: x = car (x); goto op_cdaar;
4589 case OP_CDAADR: x = cdr (x); goto op_cdaar;
4590 case OP_CDADAR: x = car (x); goto op_cdadr;
4591 case OP_CDADDR: x = cdr (x); goto op_cdadr;
4592 case OP_CDDAAR: x = car (x); goto op_cddar;
4593 case OP_CDDADR: x = cdr (x); goto op_cddar;
4594 case OP_CDDDAR: x = car (x); goto op_cdddr;
4595 case OP_CDDDDR: x = cdr (x); goto op_cdddr;
4210 4596
4211 case OP_CONS: /* cons */ 4597 case OP_CONS: /* cons */
4212 set_cdr (SCHEME_V->args, cadr (SCHEME_V->args)); 4598 set_cdr (args, cadr (args));
4213 s_return (SCHEME_V->args); 4599 s_return (args);
4214 4600
4215 case OP_SETCAR: /* set-car! */ 4601 case OP_SETCAR: /* set-car! */
4216 if (!is_immutable (car (SCHEME_V->args))) 4602 if (!is_immutable (x))
4217 { 4603 {
4218 set_car (car (SCHEME_V->args), cadr (SCHEME_V->args)); 4604 set_car (x, cadr (args));
4219 s_return (car (SCHEME_V->args)); 4605 s_return (car (args));
4220 } 4606 }
4221 else 4607 else
4222 Error_0 ("set-car!: unable to alter immutable pair"); 4608 Error_0 ("set-car!: unable to alter immutable pair");
4223 4609
4224 case OP_SETCDR: /* set-cdr! */ 4610 case OP_SETCDR: /* set-cdr! */
4225 if (!is_immutable (car (SCHEME_V->args))) 4611 if (!is_immutable (x))
4226 { 4612 {
4227 set_cdr (car (SCHEME_V->args), cadr (SCHEME_V->args)); 4613 set_cdr (x, cadr (args));
4228 s_return (car (SCHEME_V->args)); 4614 s_return (car (args));
4229 } 4615 }
4230 else 4616 else
4231 Error_0 ("set-cdr!: unable to alter immutable pair"); 4617 Error_0 ("set-cdr!: unable to alter immutable pair");
4232 4618
4233 case OP_CHAR2INT: /* char->integer */ 4619 case OP_CHAR2INT: /* char->integer */
4234 s_return (mk_integer (SCHEME_A_ ivalue (car (SCHEME_V->args)))); 4620 s_return (mk_integer (SCHEME_A_ ivalue_unchecked (x)));
4235 4621
4236 case OP_INT2CHAR: /* integer->char */ 4622 case OP_INT2CHAR: /* integer->char */
4237 s_return (mk_character (SCHEME_A_ ivalue (car (SCHEME_V->args)))); 4623 s_return (mk_character (SCHEME_A_ ivalue_unchecked (x)));
4238 4624
4239 case OP_CHARUPCASE: 4625 case OP_CHARUPCASE:
4240 { 4626 {
4241 unsigned char c = ivalue (car (SCHEME_V->args)); 4627 unsigned char c = ivalue_unchecked (x);
4242 c = toupper (c); 4628 c = toupper (c);
4243 s_return (mk_character (SCHEME_A_ c)); 4629 s_return (mk_character (SCHEME_A_ c));
4244 } 4630 }
4245 4631
4246 case OP_CHARDNCASE: 4632 case OP_CHARDNCASE:
4247 { 4633 {
4248 unsigned char c = ivalue (car (SCHEME_V->args)); 4634 unsigned char c = ivalue_unchecked (x);
4249 c = tolower (c); 4635 c = tolower (c);
4250 s_return (mk_character (SCHEME_A_ c)); 4636 s_return (mk_character (SCHEME_A_ c));
4251 } 4637 }
4252 4638
4253 case OP_STR2SYM: /* string->symbol */ 4639 case OP_STR2SYM: /* string->symbol */
4254 s_return (mk_symbol (SCHEME_A_ strvalue (car (SCHEME_V->args)))); 4640 s_return (mk_symbol (SCHEME_A_ strvalue (x)));
4255 4641
4256 case OP_STR2ATOM: /* string->atom */ 4642 case OP_STR2ATOM: /* string->atom */
4257 { 4643 {
4258 char *s = strvalue (car (SCHEME_V->args)); 4644 char *s = strvalue (x);
4259 long pf = 0; 4645 long pf = 0;
4260 4646
4261 if (cdr (SCHEME_V->args) != NIL) 4647 if (cdr (args) != NIL)
4262 { 4648 {
4263 /* we know cadr(SCHEME_V->args) is a natural number */ 4649 /* we know cadr(args) is a natural number */
4264 /* see if it is 2, 8, 10, or 16, or error */ 4650 /* see if it is 2, 8, 10, or 16, or error */
4265 pf = ivalue_unchecked (cadr (SCHEME_V->args)); 4651 pf = ivalue_unchecked (cadr (args));
4266 4652
4267 if (pf == 16 || pf == 10 || pf == 8 || pf == 2) 4653 if (pf == 16 || pf == 10 || pf == 8 || pf == 2)
4268 { 4654 {
4269 /* base is OK */ 4655 /* base is OK */
4270 } 4656 }
4271 else 4657 else
4272 pf = -1; 4658 pf = -1;
4273 } 4659 }
4274 4660
4275 if (pf < 0) 4661 if (pf < 0)
4276 Error_1 ("string->atom: bad base:", cadr (SCHEME_V->args)); 4662 Error_1 ("string->atom: bad base:", cadr (args));
4277 else if (*s == '#') /* no use of base! */ 4663 else if (*s == '#') /* no use of base! */
4278 s_return (mk_sharp_const (SCHEME_A_ s + 1)); 4664 s_return (mk_sharp_const (SCHEME_A_ s + 1));
4279 else 4665 else
4280 { 4666 {
4281 if (pf == 0 || pf == 10) 4667 if (pf == 0 || pf == 10)
… …
4292 } 4678 }
4293 } 4679 }
4294 } 4680 }
4295 4681
4296 case OP_SYM2STR: /* symbol->string */ 4682 case OP_SYM2STR: /* symbol->string */
4297 x = mk_string (SCHEME_A_ symname (car (SCHEME_V->args))); 4683 x = mk_string (SCHEME_A_ symname (x));
4298 setimmutable (x); 4684 setimmutable (x);
4299 s_return (x); 4685 s_return (x);
4300 4686
4301 case OP_ATOM2STR: /* atom->string */ 4687 case OP_ATOM2STR: /* atom->string */
4302 { 4688 {
4303 long pf = 0; 4689 long pf = 0;
4304 4690
4305 x = car (SCHEME_V->args);
4306
4307 if (cdr (SCHEME_V->args) != NIL) 4691 if (cdr (args) != NIL)
4308 { 4692 {
4309 /* we know cadr(SCHEME_V->args) is a natural number */ 4693 /* we know cadr(args) is a natural number */
4310 /* see if it is 2, 8, 10, or 16, or error */ 4694 /* see if it is 2, 8, 10, or 16, or error */
4311 pf = ivalue_unchecked (cadr (SCHEME_V->args)); 4695 pf = ivalue_unchecked (cadr (args));
4312 4696
4313 if (is_number (x) && (pf == 16 || pf == 10 || pf == 8 || pf == 2)) 4697 if (is_number (x) && (pf == 16 || pf == 10 || pf == 8 || pf == 2))
4314 { 4698 {
4315 /* base is OK */ 4699 /* base is OK */
4316 } 4700 }
4317 else 4701 else
4318 pf = -1; 4702 pf = -1;
4319 } 4703 }
4320 4704
4321 if (pf < 0) 4705 if (pf < 0)
4322 Error_1 ("atom->string: bad base:", cadr (SCHEME_V->args)); 4706 Error_1 ("atom->string: bad base:", cadr (args));
4323 else if (is_number (x) || is_character (x) || is_string (x) || is_symbol (x)) 4707 else if (is_number (x) || is_character (x) || is_string (x) || is_symbol (x))
4324 { 4708 {
4325 char *p; 4709 char *p;
4326 int len; 4710 int len;
4327 4711
… …
4332 Error_1 ("atom->string: not an atom:", x); 4716 Error_1 ("atom->string: not an atom:", x);
4333 } 4717 }
4334 4718
4335 case OP_MKSTRING: /* make-string */ 4719 case OP_MKSTRING: /* make-string */
4336 { 4720 {
4337 int fill = ' '; 4721 int fill = cdr (args) != NIL ? charvalue (cadr (args)) : ' ';
4338 int len; 4722 int len = ivalue_unchecked (x);
4339 4723
4340 len = ivalue (car (SCHEME_V->args));
4341
4342 if (cdr (SCHEME_V->args) != NIL)
4343 fill = charvalue (cadr (SCHEME_V->args));
4344
4345 s_return (mk_empty_string (SCHEME_A_ len, (char) fill)); 4724 s_return (mk_empty_string (SCHEME_A_ len, fill));
4346 } 4725 }
4347 4726
4348 case OP_STRLEN: /* string-length */ 4727 case OP_STRLEN: /* string-length */
4349 s_return (mk_integer (SCHEME_A_ strlength (car (SCHEME_V->args)))); 4728 s_return (mk_integer (SCHEME_A_ strlength (x)));
4350 4729
4351 case OP_STRREF: /* string-ref */ 4730 case OP_STRREF: /* string-ref */
4352 { 4731 {
4353 char *str; 4732 char *str = strvalue (x);
4354 int index;
4355
4356 str = strvalue (car (SCHEME_V->args));
4357
4358 index = ivalue (cadr (SCHEME_V->args)); 4733 int index = ivalue_unchecked (cadr (args));
4359 4734
4360 if (index >= strlength (car (SCHEME_V->args))) 4735 if (index >= strlength (x))
4361 Error_1 ("string-ref: out of bounds:", cadr (SCHEME_V->args)); 4736 Error_1 ("string-ref: out of bounds:", cadr (args));
4362 4737
4363 s_return (mk_character (SCHEME_A_ ((unsigned char *) str)[index])); 4738 s_return (mk_character (SCHEME_A_ ((unsigned char *)str)[index]));
4364 } 4739 }
4365 4740
4366 case OP_STRSET: /* string-set! */ 4741 case OP_STRSET: /* string-set! */
4367 { 4742 {
4368 char *str; 4743 char *str = strvalue (x);
4369 int index; 4744 int index = ivalue_unchecked (cadr (args));
4370 int c; 4745 int c;
4371 4746
4372 if (is_immutable (car (SCHEME_V->args))) 4747 if (is_immutable (x))
4373 Error_1 ("string-set!: unable to alter immutable string:", car (SCHEME_V->args)); 4748 Error_1 ("string-set!: unable to alter immutable string:", x);
4374 4749
4375 str = strvalue (car (SCHEME_V->args));
4376
4377 index = ivalue (cadr (SCHEME_V->args));
4378
4379 if (index >= strlength (car (SCHEME_V->args))) 4750 if (index >= strlength (x))
4380 Error_1 ("string-set!: out of bounds:", cadr (SCHEME_V->args)); 4751 Error_1 ("string-set!: out of bounds:", cadr (args));
4381 4752
4382 c = charvalue (caddr (SCHEME_V->args)); 4753 c = charvalue (caddr (args));
4383 4754
4384 str[index] = (char) c; 4755 str[index] = c;
4385 s_return (car (SCHEME_V->args)); 4756 s_return (car (args));
4386 } 4757 }
4387 4758
4388 case OP_STRAPPEND: /* string-append */ 4759 case OP_STRAPPEND: /* string-append */
4389 { 4760 {
4390 /* in 1.29 string-append was in Scheme in init.scm but was too slow */ 4761 /* in 1.29 string-append was in Scheme in init.scm but was too slow */
4391 int len = 0; 4762 int len = 0;
4392 pointer newstr; 4763 pointer newstr;
4393 char *pos; 4764 char *pos;
4394 4765
4395 /* compute needed length for new string */ 4766 /* compute needed length for new string */
4396 for (x = SCHEME_V->args; x != NIL; x = cdr (x)) 4767 for (x = args; x != NIL; x = cdr (x))
4397 len += strlength (car (x)); 4768 len += strlength (car (x));
4398 4769
4399 newstr = mk_empty_string (SCHEME_A_ len, ' '); 4770 newstr = mk_empty_string (SCHEME_A_ len, ' ');
4400 4771
4401 /* store the contents of the argument strings into the new string */ 4772 /* store the contents of the argument strings into the new string */
4402 for (pos = strvalue (newstr), x = SCHEME_V->args; x != NIL; pos += strlength (car (x)), x = cdr (x)) 4773 for (pos = strvalue (newstr), x = args; x != NIL; pos += strlength (car (x)), x = cdr (x))
4403 memcpy (pos, strvalue (car (x)), strlength (car (x))); 4774 memcpy (pos, strvalue (car (x)), strlength (car (x)));
4404 4775
4405 s_return (newstr); 4776 s_return (newstr);
4406 } 4777 }
4407 4778
4408 case OP_SUBSTR: /* substring */ 4779 case OP_STRING_COPY: /* substring/string-copy */
4409 { 4780 {
4410 char *str; 4781 char *str = strvalue (x);
4411 int index0; 4782 int index0 = cadr (args) == NIL ? 0 : ivalue_unchecked (cadr (args));
4412 int index1; 4783 int index1;
4413 int len; 4784 int len;
4414 4785
4415 str = strvalue (car (SCHEME_V->args));
4416
4417 index0 = ivalue (cadr (SCHEME_V->args));
4418
4419 if (index0 > strlength (car (SCHEME_V->args))) 4786 if (index0 > strlength (x))
4420 Error_1 ("substring: start out of bounds:", cadr (SCHEME_V->args)); 4787 Error_1 ("string->copy: start out of bounds:", cadr (args));
4421 4788
4422 if (cddr (SCHEME_V->args) != NIL) 4789 if (cddr (args) != NIL)
4423 { 4790 {
4424 index1 = ivalue (caddr (SCHEME_V->args)); 4791 index1 = ivalue_unchecked (caddr (args));
4425 4792
4426 if (index1 > strlength (car (SCHEME_V->args)) || index1 < index0) 4793 if (index1 > strlength (x) || index1 < index0)
4427 Error_1 ("substring: end out of bounds:", caddr (SCHEME_V->args)); 4794 Error_1 ("string->copy: end out of bounds:", caddr (args));
4428 } 4795 }
4429 else 4796 else
4430 index1 = strlength (car (SCHEME_V->args)); 4797 index1 = strlength (x);
4431 4798
4432 len = index1 - index0; 4799 len = index1 - index0;
4433 x = mk_empty_string (SCHEME_A_ len, ' '); 4800 x = mk_counted_string (SCHEME_A_ str + index0, len);
4434 memcpy (strvalue (x), str + index0, len);
4435 strvalue (x)[len] = 0;
4436 4801
4437 s_return (x); 4802 s_return (x);
4438 } 4803 }
4439 4804
4440 case OP_VECTOR: /* vector */ 4805 case OP_VECTOR: /* vector */
4441 { 4806 {
4442 int i; 4807 int i;
4443 pointer vec; 4808 pointer vec;
4444 int len = list_length (SCHEME_A_ SCHEME_V->args); 4809 int len = list_length (SCHEME_A_ args);
4445 4810
4446 if (len < 0) 4811 if (len < 0)
4447 Error_1 ("vector: not a proper list:", SCHEME_V->args); 4812 Error_1 ("vector: not a proper list:", args);
4448 4813
4449 vec = mk_vector (SCHEME_A_ len); 4814 vec = mk_vector (SCHEME_A_ len);
4450 4815
4451#if USE_ERROR_CHECKING 4816#if USE_ERROR_CHECKING
4452 if (SCHEME_V->no_memory) 4817 if (SCHEME_V->no_memory)
4453 s_return (S_SINK); 4818 s_return (S_SINK);
4454#endif 4819#endif
4455 4820
4456 for (x = SCHEME_V->args, i = 0; is_pair (x); x = cdr (x), i++) 4821 for (x = args, i = 0; is_pair (x); x = cdr (x), i++)
4457 set_vector_elem (vec, i, car (x)); 4822 vector_set (vec, i, car (x));
4458 4823
4459 s_return (vec); 4824 s_return (vec);
4460 } 4825 }
4461 4826
4462 case OP_MKVECTOR: /* make-vector */ 4827 case OP_MKVECTOR: /* make-vector */
4463 { 4828 {
4464 pointer fill = NIL; 4829 pointer fill = NIL;
4465 int len;
4466 pointer vec; 4830 pointer vec;
4831 int len = ivalue_unchecked (x);
4467 4832
4468 len = ivalue (car (SCHEME_V->args));
4469
4470 if (cdr (SCHEME_V->args) != NIL) 4833 if (cdr (args) != NIL)
4471 fill = cadr (SCHEME_V->args); 4834 fill = cadr (args);
4472 4835
4473 vec = mk_vector (SCHEME_A_ len); 4836 vec = mk_vector (SCHEME_A_ len);
4474 4837
4475#if USE_ERROR_CHECKING 4838#if USE_ERROR_CHECKING
4476 if (SCHEME_V->no_memory) 4839 if (SCHEME_V->no_memory)
4477 s_return (S_SINK); 4840 s_return (S_SINK);
4478#endif 4841#endif
4479 4842
4480 if (fill != NIL) 4843 if (fill != NIL)
4481 fill_vector (vec, fill); 4844 fill_vector (vec, 0, fill);
4482 4845
4483 s_return (vec); 4846 s_return (vec);
4484 } 4847 }
4485 4848
4486 case OP_VECLEN: /* vector-length */ 4849 case OP_VECLEN: /* vector-length */
4487 s_return (mk_integer (SCHEME_A_ veclength (car (SCHEME_V->args)))); 4850 s_return (mk_integer (SCHEME_A_ veclength (x)));
4851
4852 case OP_VECRESIZE:
4853 vector_resize (x, ivalue_unchecked (cadr (args)), caddr (args));
4854 s_return (x);
4488 4855
4489 case OP_VECREF: /* vector-ref */ 4856 case OP_VECREF: /* vector-ref */
4490 { 4857 {
4491 int index;
4492
4493 index = ivalue (cadr (SCHEME_V->args)); 4858 int index = ivalue_unchecked (cadr (args));
4494 4859
4495 if (index >= veclength (car (SCHEME_V->args)) && USE_ERROR_CHECKING) 4860 if (index >= veclength (car (args)) && USE_ERROR_CHECKING)
4496 Error_1 ("vector-ref: out of bounds:", cadr (SCHEME_V->args)); 4861 Error_1 ("vector-ref: out of bounds:", cadr (args));
4497 4862
4498 s_return (vector_elem (car (SCHEME_V->args), index)); 4863 s_return (vector_get (x, index));
4499 } 4864 }
4500 4865
4501 case OP_VECSET: /* vector-set! */ 4866 case OP_VECSET: /* vector-set! */
4502 { 4867 {
4503 int index; 4868 int index = ivalue_unchecked (cadr (args));
4504 4869
4505 if (is_immutable (car (SCHEME_V->args))) 4870 if (is_immutable (x))
4506 Error_1 ("vector-set!: unable to alter immutable vector:", car (SCHEME_V->args)); 4871 Error_1 ("vector-set!: unable to alter immutable vector:", x);
4507 4872
4508 index = ivalue (cadr (SCHEME_V->args));
4509
4510 if (index >= veclength (car (SCHEME_V->args)) && USE_ERROR_CHECKING) 4873 if (index >= veclength (car (args)) && USE_ERROR_CHECKING)
4511 Error_1 ("vector-set!: out of bounds:", cadr (SCHEME_V->args)); 4874 Error_1 ("vector-set!: out of bounds:", cadr (args));
4512 4875
4513 set_vector_elem (car (SCHEME_V->args), index, caddr (SCHEME_V->args)); 4876 vector_set (x, index, caddr (args));
4514 s_return (car (SCHEME_V->args)); 4877 s_return (x);
4515 } 4878 }
4516 } 4879 }
4517 4880
4518 return S_T; 4881 if (USE_ERROR_CHECKING) abort ();
4519} 4882}
4520 4883
4521INTERFACE int 4884/* relational ops */
4522is_list (SCHEME_P_ pointer a) 4885ecb_hot static int
4886opexe_2 (SCHEME_P_ enum scheme_opcodes op)
4523{ 4887{
4524 return list_length (SCHEME_A_ a) >= 0; 4888 pointer x = SCHEME_V->args;
4525}
4526 4889
4527/* Result is: 4890 for (;;)
4528 proper list: length
4529 circular list: -1
4530 not even a pair: -2
4531 dotted list: -2 minus length before dot
4532*/
4533INTERFACE int
4534list_length (SCHEME_P_ pointer a)
4535{
4536 int i = 0;
4537 pointer slow, fast;
4538
4539 slow = fast = a;
4540
4541 while (1)
4542 { 4891 {
4892 num v = nvalue (car (x));
4893 x = cdr (x);
4894
4543 if (fast == NIL) 4895 if (x == NIL)
4544 return i; 4896 break;
4545 4897
4546 if (!is_pair (fast)) 4898 int r = num_cmp (v, nvalue (car (x)));
4547 return -2 - i;
4548 4899
4549 fast = cdr (fast); 4900 switch (op)
4550 ++i;
4551
4552 if (fast == NIL)
4553 return i;
4554
4555 if (!is_pair (fast))
4556 return -2 - i;
4557
4558 ++i;
4559 fast = cdr (fast);
4560
4561 /* Safe because we would have already returned if `fast'
4562 encountered a non-pair. */
4563 slow = cdr (slow);
4564
4565 if (fast == slow)
4566 { 4901 {
4567 /* the fast pointer has looped back around and caught up 4902 case OP_NUMEQ: r = r == 0; break;
4568 with the slow pointer, hence the structure is circular, 4903 case OP_LESS: r = r < 0; break;
4569 not of finite length, and therefore not a list */ 4904 case OP_GRE: r = r > 0; break;
4570 return -1; 4905 case OP_LEQ: r = r <= 0; break;
4906 case OP_GEQ: r = r >= 0; break;
4571 } 4907 }
4572 }
4573}
4574 4908
4575static pointer 4909 if (!r)
4910 s_return (S_F);
4911 }
4912
4913 s_return (S_T);
4914}
4915
4916/* predicates */
4917ecb_hot static int
4576opexe_3 (SCHEME_P_ enum scheme_opcodes op) 4918opexe_3 (SCHEME_P_ enum scheme_opcodes op)
4577{ 4919{
4578 pointer x; 4920 pointer args = SCHEME_V->args;
4579 num v; 4921 pointer a = car (args);
4580 int (*comp_func) (num, num); 4922 pointer d = cdr (args);
4923 int r;
4581 4924
4582 switch (op) 4925 switch (op)
4583 { 4926 {
4584 case OP_NOT: /* not */ 4927 case OP_NOT: /* not */ r = is_false (a) ; break;
4585 s_retbool (is_false (car (SCHEME_V->args))); 4928 case OP_BOOLP: /* boolean? */ r = a == S_F || a == S_T ; break;
4929 case OP_EOFOBJP: /* eof-object? */ r = a == S_EOF ; break;
4930 case OP_NULLP: /* null? */ r = a == NIL ; break;
4931 case OP_SYMBOLP: /* symbol? */ r = is_symbol (a) ; break;
4932 case OP_GENSYMP: /* gensym? */ r = is_gensym (SCHEME_A_ a); break;
4933 case OP_NUMBERP: /* number? */ r = is_number (a) ; break;
4934 case OP_STRINGP: /* string? */ r = is_string (a) ; break;
4935 case OP_INTEGERP: /* integer? */ r = is_integer (a) ; break;
4936 case OP_REALP: /* real? */ r = is_number (a) ; break; /* all numbers are real */
4937 case OP_CHARP: /* char? */ r = is_character (a) ; break;
4586 4938
4587 case OP_BOOLP: /* boolean? */
4588 s_retbool (car (SCHEME_V->args) == S_F || car (SCHEME_V->args) == S_T);
4589
4590 case OP_EOFOBJP: /* boolean? */
4591 s_retbool (car (SCHEME_V->args) == S_EOF);
4592
4593 case OP_NULLP: /* null? */
4594 s_retbool (car (SCHEME_V->args) == NIL);
4595
4596 case OP_NUMEQ: /* = */
4597 case OP_LESS: /* < */
4598 case OP_GRE: /* > */
4599 case OP_LEQ: /* <= */
4600 case OP_GEQ: /* >= */
4601 switch (op)
4602 {
4603 case OP_NUMEQ:
4604 comp_func = num_eq;
4605 break;
4606
4607 case OP_LESS:
4608 comp_func = num_lt;
4609 break;
4610
4611 case OP_GRE:
4612 comp_func = num_gt;
4613 break;
4614
4615 case OP_LEQ:
4616 comp_func = num_le;
4617 break;
4618
4619 case OP_GEQ:
4620 comp_func = num_ge;
4621 break;
4622 }
4623
4624 x = SCHEME_V->args;
4625 v = nvalue (car (x));
4626 x = cdr (x);
4627
4628 for (; x != NIL; x = cdr (x))
4629 {
4630 if (!comp_func (v, nvalue (car (x))))
4631 s_retbool (0);
4632
4633 v = nvalue (car (x));
4634 }
4635
4636 s_retbool (1);
4637
4638 case OP_SYMBOLP: /* symbol? */
4639 s_retbool (is_symbol (car (SCHEME_V->args)));
4640
4641 case OP_NUMBERP: /* number? */
4642 s_retbool (is_number (car (SCHEME_V->args)));
4643
4644 case OP_STRINGP: /* string? */
4645 s_retbool (is_string (car (SCHEME_V->args)));
4646
4647 case OP_INTEGERP: /* integer? */
4648 s_retbool (is_integer (car (SCHEME_V->args)));
4649
4650 case OP_REALP: /* real? */
4651 s_retbool (is_number (car (SCHEME_V->args))); /* All numbers are real */
4652
4653 case OP_CHARP: /* char? */
4654 s_retbool (is_character (car (SCHEME_V->args)));
4655#if USE_CHAR_CLASSIFIERS 4939#if USE_CHAR_CLASSIFIERS
4656 4940 case OP_CHARAP: /* char-alphabetic? */ r = Cisalpha (ivalue_unchecked (a)); break;
4657 case OP_CHARAP: /* char-alphabetic? */ 4941 case OP_CHARNP: /* char-numeric? */ r = Cisdigit (ivalue_unchecked (a)); break;
4658 s_retbool (Cisalpha (ivalue (car (SCHEME_V->args)))); 4942 case OP_CHARWP: /* char-whitespace? */ r = Cisspace (ivalue_unchecked (a)); break;
4659 4943 case OP_CHARUP: /* char-upper-case? */ r = Cisupper (ivalue_unchecked (a)); break;
4660 case OP_CHARNP: /* char-numeric? */ 4944 case OP_CHARLP: /* char-lower-case? */ r = Cislower (ivalue_unchecked (a)); break;
4661 s_retbool (Cisdigit (ivalue (car (SCHEME_V->args))));
4662
4663 case OP_CHARWP: /* char-whitespace? */
4664 s_retbool (Cisspace (ivalue (car (SCHEME_V->args))));
4665
4666 case OP_CHARUP: /* char-upper-case? */
4667 s_retbool (Cisupper (ivalue (car (SCHEME_V->args))));
4668
4669 case OP_CHARLP: /* char-lower-case? */
4670 s_retbool (Cislower (ivalue (car (SCHEME_V->args))));
4671#endif 4945#endif
4946
4672#if USE_PORTS 4947#if USE_PORTS
4673 4948 case OP_PORTP: /* port? */ r = is_port (a) ; break;
4674 case OP_PORTP: /* port? */
4675 s_retbool (is_port (car (SCHEME_V->args)));
4676
4677 case OP_INPORTP: /* input-port? */ 4949 case OP_INPORTP: /* input-port? */ r = is_inport (a) ; break;
4678 s_retbool (is_inport (car (SCHEME_V->args)));
4679
4680 case OP_OUTPORTP: /* output-port? */ 4950 case OP_OUTPORTP: /* output-port? */ r = is_outport (a); break;
4681 s_retbool (is_outport (car (SCHEME_V->args)));
4682#endif 4951#endif
4683 4952
4684 case OP_PROCP: /* procedure? */ 4953 case OP_PROCP: /* procedure? */
4685 4954
4686 /*-- 4955 /*--
4687 * continuation should be procedure by the example 4956 * continuation should be procedure by the example
4688 * (call-with-current-continuation procedure?) ==> #t 4957 * (call-with-current-continuation procedure?) ==> #t
4689 * in R^3 report sec. 6.9 4958 * in R^3 report sec. 6.9
4690 */ 4959 */
4691 s_retbool (is_proc (car (SCHEME_V->args)) || is_closure (car (SCHEME_V->args)) 4960 r = is_proc (a) || is_closure (a) || is_continuation (a) || is_foreign (a);
4692 || is_continuation (car (SCHEME_V->args)) || is_foreign (car (SCHEME_V->args))); 4961 break;
4693 4962
4694 case OP_PAIRP: /* pair? */ 4963 case OP_PAIRP: /* pair? */ r = is_pair (a) ; break;
4695 s_retbool (is_pair (car (SCHEME_V->args))); 4964 case OP_LISTP: /* list? */ r = list_length (SCHEME_A_ a) >= 0; break;
4696 4965 case OP_ENVP: /* environment? */ r = is_environment (a) ; break;
4697 case OP_LISTP: /* list? */ 4966 case OP_VECTORP: /* vector? */ r = is_vector (a) ; break;
4698 s_retbool (list_length (SCHEME_A_ car (SCHEME_V->args)) >= 0); 4967 case OP_EQ: /* eq? */ r = a == cadr (args) ; break;
4699 4968 case OP_EQV: /* eqv? */ r = eqv (a, cadr (args)) ; break;
4700 case OP_ENVP: /* environment? */
4701 s_retbool (is_environment (car (SCHEME_V->args)));
4702
4703 case OP_VECTORP: /* vector? */
4704 s_retbool (is_vector (car (SCHEME_V->args)));
4705
4706 case OP_EQ: /* eq? */
4707 s_retbool (car (SCHEME_V->args) == cadr (SCHEME_V->args));
4708
4709 case OP_EQV: /* eqv? */
4710 s_retbool (eqv (car (SCHEME_V->args), cadr (SCHEME_V->args)));
4711 } 4969 }
4712 4970
4713 return S_T; 4971 s_retbool (r);
4714} 4972}
4715 4973
4716static pointer 4974/* promises, list ops, ports */
4975ecb_hot static int
4717opexe_4 (SCHEME_P_ enum scheme_opcodes op) 4976opexe_4 (SCHEME_P_ enum scheme_opcodes op)
4718{ 4977{
4978 pointer args = SCHEME_V->args;
4979 pointer a = car (args);
4719 pointer x, y; 4980 pointer x, y;
4720 4981
4721 switch (op) 4982 switch (op)
4722 { 4983 {
4723 case OP_FORCE: /* force */ 4984 case OP_FORCE: /* force */
4724 SCHEME_V->code = car (SCHEME_V->args); 4985 SCHEME_V->code = a;
4725 4986
4726 if (is_promise (SCHEME_V->code)) 4987 if (is_promise (SCHEME_V->code))
4727 { 4988 {
4728 /* Should change type to closure here */ 4989 /* Should change type to closure here */
4729 s_save (SCHEME_A_ OP_SAVE_FORCED, NIL, SCHEME_V->code); 4990 s_save (SCHEME_A_ OP_SAVE_FORCED, NIL, SCHEME_V->code);
… …
4732 } 4993 }
4733 else 4994 else
4734 s_return (SCHEME_V->code); 4995 s_return (SCHEME_V->code);
4735 4996
4736 case OP_SAVE_FORCED: /* Save forced value replacing promise */ 4997 case OP_SAVE_FORCED: /* Save forced value replacing promise */
4737 memcpy (SCHEME_V->code, SCHEME_V->value, sizeof (struct cell)); 4998 *CELL (SCHEME_V->code) = *CELL (SCHEME_V->value);
4738 s_return (SCHEME_V->value); 4999 s_return (SCHEME_V->value);
4739 5000
4740#if USE_PORTS 5001#if USE_PORTS
5002
5003 case OP_EOF_OBJECT: /* eof-object */
5004 s_return (S_EOF);
4741 5005
4742 case OP_WRITE: /* write */ 5006 case OP_WRITE: /* write */
4743 case OP_DISPLAY: /* display */ 5007 case OP_DISPLAY: /* display */
4744 case OP_WRITE_CHAR: /* write-char */ 5008 case OP_WRITE_CHAR: /* write-char */
4745 if (is_pair (cdr (SCHEME_V->args))) 5009 if (is_pair (cdr (SCHEME_V->args)))
… …
4750 s_save (SCHEME_A_ OP_SET_OUTPORT, x, NIL); 5014 s_save (SCHEME_A_ OP_SET_OUTPORT, x, NIL);
4751 SCHEME_V->outport = cadr (SCHEME_V->args); 5015 SCHEME_V->outport = cadr (SCHEME_V->args);
4752 } 5016 }
4753 } 5017 }
4754 5018
4755 SCHEME_V->args = car (SCHEME_V->args); 5019 SCHEME_V->args = a;
4756 5020
4757 if (op == OP_WRITE) 5021 if (op == OP_WRITE)
4758 SCHEME_V->print_flag = 1; 5022 SCHEME_V->print_flag = 1;
4759 else 5023 else
4760 SCHEME_V->print_flag = 0; 5024 SCHEME_V->print_flag = 0;
4761 5025
4762 s_goto (OP_P0LIST); 5026 s_goto (OP_P0LIST);
4763 5027
5028 //TODO: move to scheme
4764 case OP_NEWLINE: /* newline */ 5029 case OP_NEWLINE: /* newline */
4765 if (is_pair (SCHEME_V->args)) 5030 if (is_pair (args))
4766 { 5031 {
4767 if (car (SCHEME_V->args) != SCHEME_V->outport) 5032 if (a != SCHEME_V->outport)
4768 { 5033 {
4769 x = cons (SCHEME_V->outport, NIL); 5034 x = cons (SCHEME_V->outport, NIL);
4770 s_save (SCHEME_A_ OP_SET_OUTPORT, x, NIL); 5035 s_save (SCHEME_A_ OP_SET_OUTPORT, x, NIL);
4771 SCHEME_V->outport = car (SCHEME_V->args); 5036 SCHEME_V->outport = a;
4772 } 5037 }
4773 } 5038 }
4774 5039
4775 putstr (SCHEME_A_ "\n"); 5040 putcharacter (SCHEME_A_ '\n');
4776 s_return (S_T); 5041 s_return (S_T);
4777#endif 5042#endif
4778 5043
4779 case OP_ERR0: /* error */ 5044 case OP_ERR0: /* error */
4780 SCHEME_V->retcode = -1; 5045 SCHEME_V->retcode = -1;
4781 5046
4782 if (!is_string (car (SCHEME_V->args))) 5047 if (!is_string (a))
4783 { 5048 {
4784 SCHEME_V->args = cons (mk_string (SCHEME_A_ " -- "), SCHEME_V->args); 5049 args = cons (mk_string (SCHEME_A_ " -- "), args);
4785 setimmutable (car (SCHEME_V->args)); 5050 setimmutable (car (args));
4786 } 5051 }
4787 5052
4788 putstr (SCHEME_A_ "Error: "); 5053 putstr (SCHEME_A_ "Error: ");
4789 putstr (SCHEME_A_ strvalue (car (SCHEME_V->args))); 5054 putstr (SCHEME_A_ strvalue (car (args)));
4790 SCHEME_V->args = cdr (SCHEME_V->args); 5055 SCHEME_V->args = cdr (args);
4791 s_goto (OP_ERR1); 5056 s_goto (OP_ERR1);
4792 5057
4793 case OP_ERR1: /* error */ 5058 case OP_ERR1: /* error */
4794 putstr (SCHEME_A_ " "); 5059 putcharacter (SCHEME_A_ ' ');
4795 5060
4796 if (SCHEME_V->args != NIL) 5061 if (args != NIL)
4797 { 5062 {
4798 s_save (SCHEME_A_ OP_ERR1, cdr (SCHEME_V->args), NIL); 5063 s_save (SCHEME_A_ OP_ERR1, cdr (args), NIL);
4799 SCHEME_V->args = car (SCHEME_V->args); 5064 SCHEME_V->args = a;
4800 SCHEME_V->print_flag = 1; 5065 SCHEME_V->print_flag = 1;
4801 s_goto (OP_P0LIST); 5066 s_goto (OP_P0LIST);
4802 } 5067 }
4803 else 5068 else
4804 { 5069 {
4805 putstr (SCHEME_A_ "\n"); 5070 putcharacter (SCHEME_A_ '\n');
4806 5071
4807 if (SCHEME_V->interactive_repl) 5072 if (SCHEME_V->interactive_repl)
4808 s_goto (OP_T0LVL); 5073 s_goto (OP_T0LVL);
4809 else 5074 else
4810 return NIL; 5075 return -1;
4811 } 5076 }
4812 5077
4813 case OP_REVERSE: /* reverse */ 5078 case OP_REVERSE: /* reverse */
4814 s_return (reverse (SCHEME_A_ car (SCHEME_V->args))); 5079 s_return (reverse (SCHEME_A_ a));
4815 5080
4816 case OP_LIST_STAR: /* list* */ 5081 case OP_LIST_STAR: /* list* */
4817 s_return (list_star (SCHEME_A_ SCHEME_V->args)); 5082 s_return (list_star (SCHEME_A_ SCHEME_V->args));
4818 5083
4819 case OP_APPEND: /* append */ 5084 case OP_APPEND: /* append */
4820 x = NIL; 5085 x = NIL;
4821 y = SCHEME_V->args; 5086 y = args;
4822 5087
4823 if (y == x) 5088 if (y == x)
4824 s_return (x); 5089 s_return (x);
4825 5090
4826 /* cdr() in the while condition is not a typo. If car() */ 5091 /* cdr() in the while condition is not a typo. If car() */
… …
4837 s_return (reverse_in_place (SCHEME_A_ car (y), x)); 5102 s_return (reverse_in_place (SCHEME_A_ car (y), x));
4838 5103
4839#if USE_PLIST 5104#if USE_PLIST
4840 5105
4841 case OP_PUT: /* put */ 5106 case OP_PUT: /* put */
4842 if (!hasprop (car (SCHEME_V->args)) || !hasprop (cadr (SCHEME_V->args))) 5107 if (!hasprop (a) || !hasprop (cadr (args)))
4843 Error_0 ("illegal use of put"); 5108 Error_0 ("illegal use of put");
4844 5109
4845 for (x = symprop (car (SCHEME_V->args)), y = cadr (SCHEME_V->args); x != NIL; x = cdr (x)) 5110 for (x = symprop (a), y = cadr (args); x != NIL; x = cdr (x))
4846 { 5111 {
4847 if (caar (x) == y) 5112 if (caar (x) == y)
4848 break; 5113 break;
4849 } 5114 }
4850 5115
4851 if (x != NIL) 5116 if (x != NIL)
4852 cdar (x) = caddr (SCHEME_V->args); 5117 cdar (x) = caddr (args);
4853 else 5118 else
4854 symprop (car (SCHEME_V->args)) = cons (cons (y, caddr (SCHEME_V->args)), symprop (car (SCHEME_V->args))); 5119 symprop (a) = cons (cons (y, caddr (args)), symprop (a));
4855 5120
4856 s_return (S_T); 5121 s_return (S_T);
4857 5122
4858 case OP_GET: /* get */ 5123 case OP_GET: /* get */
4859 if (!hasprop (car (SCHEME_V->args)) || !hasprop (cadr (SCHEME_V->args))) 5124 if (!hasprop (a) || !hasprop (cadr (args)))
4860 Error_0 ("illegal use of get"); 5125 Error_0 ("illegal use of get");
4861 5126
4862 for (x = symprop (car (SCHEME_V->args)), y = cadr (SCHEME_V->args); x != NIL; x = cdr (x)) 5127 for (x = symprop (a), y = cadr (args); x != NIL; x = cdr (x))
4863 if (caar (x) == y) 5128 if (caar (x) == y)
4864 break; 5129 break;
4865 5130
4866 if (x != NIL) 5131 if (x != NIL)
4867 s_return (cdar (x)); 5132 s_return (cdar (x));
… …
4869 s_return (NIL); 5134 s_return (NIL);
4870 5135
4871#endif /* USE_PLIST */ 5136#endif /* USE_PLIST */
4872 5137
4873 case OP_QUIT: /* quit */ 5138 case OP_QUIT: /* quit */
4874 if (is_pair (SCHEME_V->args)) 5139 if (is_pair (args))
4875 SCHEME_V->retcode = ivalue (car (SCHEME_V->args)); 5140 SCHEME_V->retcode = ivalue (a);
4876 5141
4877 return NIL; 5142 return -1;
4878 5143
4879 case OP_GC: /* gc */ 5144 case OP_GC: /* gc */
4880 gc (SCHEME_A_ NIL, NIL); 5145 gc (SCHEME_A_ NIL, NIL);
4881 s_return (S_T); 5146 s_return (S_T);
4882 5147
4883 case OP_GCVERB: /* gc-verbose */ 5148 case OP_GCVERB: /* gc-verbose */
4884 { 5149 {
4885 int was = SCHEME_V->gc_verbose; 5150 int was = SCHEME_V->gc_verbose;
4886 5151
4887 SCHEME_V->gc_verbose = (car (SCHEME_V->args) != S_F); 5152 SCHEME_V->gc_verbose = (a != S_F);
4888 s_retbool (was); 5153 s_retbool (was);
4889 } 5154 }
4890 5155
4891 case OP_NEWSEGMENT: /* new-segment */ 5156 case OP_NEWSEGMENT: /* new-segment */
5157#if 0
4892 if (!is_pair (SCHEME_V->args) || !is_number (car (SCHEME_V->args))) 5158 if (!is_pair (args) || !is_number (a))
4893 Error_0 ("new-segment: argument must be a number"); 5159 Error_0 ("new-segment: argument must be a number");
4894 5160#endif
4895 alloc_cellseg (SCHEME_A_ (int)ivalue (car (SCHEME_V->args))); 5161 s_retbool (alloc_cellseg (SCHEME_A));
4896
4897 s_return (S_T);
4898 5162
4899 case OP_OBLIST: /* oblist */ 5163 case OP_OBLIST: /* oblist */
4900 s_return (oblist_all_symbols (SCHEME_A)); 5164 s_return (oblist_all_symbols (SCHEME_A));
4901 5165
4902#if USE_PORTS 5166#if USE_PORTS
… …
4927 case OP_OPEN_INOUTFILE: 5191 case OP_OPEN_INOUTFILE:
4928 prop = port_input | port_output; 5192 prop = port_input | port_output;
4929 break; 5193 break;
4930 } 5194 }
4931 5195
4932 p = port_from_filename (SCHEME_A_ strvalue (car (SCHEME_V->args)), prop); 5196 p = port_from_filename (SCHEME_A_ strvalue (a), prop);
4933 5197
4934 if (p == NIL) 5198 s_return (p == NIL ? S_F : p);
4935 s_return (S_F);
4936
4937 s_return (p);
4938 } 5199 }
4939 5200
4940# if USE_STRING_PORTS 5201# if USE_STRING_PORTS
4941 5202
4942 case OP_OPEN_INSTRING: /* open-input-string */ 5203 case OP_OPEN_INSTRING: /* open-input-string */
… …
4954 case OP_OPEN_INOUTSTRING: 5215 case OP_OPEN_INOUTSTRING:
4955 prop = port_input | port_output; 5216 prop = port_input | port_output;
4956 break; 5217 break;
4957 } 5218 }
4958 5219
4959 p = port_from_string (SCHEME_A_ strvalue (car (SCHEME_V->args)), 5220 p = port_from_string (SCHEME_A_ strvalue (a),
4960 strvalue (car (SCHEME_V->args)) + strlength (car (SCHEME_V->args)), prop); 5221 strvalue (a) + strlength (a), prop);
4961 5222
4962 if (p == NIL) 5223 s_return (p == NIL ? S_F : p);
4963 s_return (S_F);
4964
4965 s_return (p);
4966 } 5224 }
4967 5225
4968 case OP_OPEN_OUTSTRING: /* open-output-string */ 5226 case OP_OPEN_OUTSTRING: /* open-output-string */
4969 { 5227 {
4970 pointer p; 5228 pointer p;
4971 5229
4972 if (car (SCHEME_V->args) == NIL) 5230 if (a == NIL)
4973 {
4974 p = port_from_scratch (SCHEME_A); 5231 p = port_from_scratch (SCHEME_A);
4975
4976 if (p == NIL)
4977 s_return (S_F);
4978 }
4979 else 5232 else
4980 {
4981 p = port_from_string (SCHEME_A_ strvalue (car (SCHEME_V->args)), 5233 p = port_from_string (SCHEME_A_ strvalue (a),
4982 strvalue (car (SCHEME_V->args)) + strlength (car (SCHEME_V->args)), port_output); 5234 strvalue (a) + strlength (a), port_output);
4983 5235
4984 if (p == NIL) 5236 s_return (p == NIL ? S_F : p);
4985 s_return (S_F);
4986 }
4987
4988 s_return (p);
4989 } 5237 }
4990 5238
4991 case OP_GET_OUTSTRING: /* get-output-string */ 5239 case OP_GET_OUTSTRING: /* get-output-string */
4992 { 5240 {
4993 port *p; 5241 port *p = port (a);
4994 5242
4995 if ((p = car (SCHEME_V->args)->object.port)->kind & port_string) 5243 if (p->kind & port_string)
4996 { 5244 {
4997 off_t size; 5245 off_t size;
4998 char *str; 5246 char *str;
4999 5247
5000 size = p->rep.string.curr - p->rep.string.start + 1; 5248 size = p->rep.string.curr - p->rep.string.start + 1;
… …
5016 } 5264 }
5017 5265
5018# endif 5266# endif
5019 5267
5020 case OP_CLOSE_INPORT: /* close-input-port */ 5268 case OP_CLOSE_INPORT: /* close-input-port */
5021 port_close (SCHEME_A_ car (SCHEME_V->args), port_input); 5269 port_close (SCHEME_A_ a, port_input);
5022 s_return (S_T); 5270 s_return (S_T);
5023 5271
5024 case OP_CLOSE_OUTPORT: /* close-output-port */ 5272 case OP_CLOSE_OUTPORT: /* close-output-port */
5025 port_close (SCHEME_A_ car (SCHEME_V->args), port_output); 5273 port_close (SCHEME_A_ a, port_output);
5026 s_return (S_T); 5274 s_return (S_T);
5027#endif 5275#endif
5028 5276
5029 case OP_INT_ENV: /* interaction-environment */ 5277 case OP_INT_ENV: /* interaction-environment */
5030 s_return (SCHEME_V->global_env); 5278 s_return (SCHEME_V->global_env);
… …
5032 case OP_CURR_ENV: /* current-environment */ 5280 case OP_CURR_ENV: /* current-environment */
5033 s_return (SCHEME_V->envir); 5281 s_return (SCHEME_V->envir);
5034 5282
5035 } 5283 }
5036 5284
5037 return S_T; 5285 if (USE_ERROR_CHECKING) abort ();
5038} 5286}
5039 5287
5040static pointer 5288/* reading */
5289ecb_cold static int
5041opexe_5 (SCHEME_P_ enum scheme_opcodes op) 5290opexe_5 (SCHEME_P_ enum scheme_opcodes op)
5042{ 5291{
5292 pointer args = SCHEME_V->args;
5043 pointer x; 5293 pointer x;
5044 5294
5045 if (SCHEME_V->nesting != 0) 5295 if (SCHEME_V->nesting != 0)
5046 { 5296 {
5047 int n = SCHEME_V->nesting; 5297 int n = SCHEME_V->nesting;
… …
5054 switch (op) 5304 switch (op)
5055 { 5305 {
5056 /* ========== reading part ========== */ 5306 /* ========== reading part ========== */
5057#if USE_PORTS 5307#if USE_PORTS
5058 case OP_READ: 5308 case OP_READ:
5059 if (!is_pair (SCHEME_V->args)) 5309 if (!is_pair (args))
5060 s_goto (OP_READ_INTERNAL); 5310 s_goto (OP_READ_INTERNAL);
5061 5311
5062 if (!is_inport (car (SCHEME_V->args))) 5312 if (!is_inport (car (args)))
5063 Error_1 ("read: not an input port:", car (SCHEME_V->args)); 5313 Error_1 ("read: not an input port:", car (args));
5064 5314
5065 if (car (SCHEME_V->args) == SCHEME_V->inport) 5315 if (car (args) == SCHEME_V->inport)
5066 s_goto (OP_READ_INTERNAL); 5316 s_goto (OP_READ_INTERNAL);
5067 5317
5068 x = SCHEME_V->inport; 5318 x = SCHEME_V->inport;
5069 SCHEME_V->inport = car (SCHEME_V->args); 5319 SCHEME_V->inport = car (args);
5070 x = cons (x, NIL); 5320 x = cons (x, NIL);
5071 s_save (SCHEME_A_ OP_SET_INPORT, x, NIL); 5321 s_save (SCHEME_A_ OP_SET_INPORT, x, NIL);
5072 s_goto (OP_READ_INTERNAL); 5322 s_goto (OP_READ_INTERNAL);
5073 5323
5074 case OP_READ_CHAR: /* read-char */ 5324 case OP_READ_CHAR: /* read-char */
5075 case OP_PEEK_CHAR: /* peek-char */ 5325 case OP_PEEK_CHAR: /* peek-char */
5076 { 5326 {
5077 int c; 5327 int c;
5078 5328
5079 if (is_pair (SCHEME_V->args)) 5329 if (is_pair (args))
5080 { 5330 {
5081 if (car (SCHEME_V->args) != SCHEME_V->inport) 5331 if (car (args) != SCHEME_V->inport)
5082 { 5332 {
5083 x = SCHEME_V->inport; 5333 x = SCHEME_V->inport;
5084 x = cons (x, NIL); 5334 x = cons (x, NIL);
5085 s_save (SCHEME_A_ OP_SET_INPORT, x, NIL); 5335 s_save (SCHEME_A_ OP_SET_INPORT, x, NIL);
5086 SCHEME_V->inport = car (SCHEME_V->args); 5336 SCHEME_V->inport = car (args);
5087 } 5337 }
5088 } 5338 }
5089 5339
5090 c = inchar (SCHEME_A); 5340 c = inchar (SCHEME_A);
5091 5341
… …
5101 case OP_CHAR_READY: /* char-ready? */ 5351 case OP_CHAR_READY: /* char-ready? */
5102 { 5352 {
5103 pointer p = SCHEME_V->inport; 5353 pointer p = SCHEME_V->inport;
5104 int res; 5354 int res;
5105 5355
5106 if (is_pair (SCHEME_V->args)) 5356 if (is_pair (args))
5107 p = car (SCHEME_V->args); 5357 p = car (args);
5108 5358
5109 res = p->object.port->kind & port_string; 5359 res = port (p)->kind & port_string;
5110 5360
5111 s_retbool (res); 5361 s_retbool (res);
5112 } 5362 }
5113 5363
5114 case OP_SET_INPORT: /* set-input-port */ 5364 case OP_SET_INPORT: /* set-input-port */
5115 SCHEME_V->inport = car (SCHEME_V->args); 5365 SCHEME_V->inport = car (args);
5116 s_return (SCHEME_V->value); 5366 s_return (SCHEME_V->value);
5117 5367
5118 case OP_SET_OUTPORT: /* set-output-port */ 5368 case OP_SET_OUTPORT: /* set-output-port */
5119 SCHEME_V->outport = car (SCHEME_V->args); 5369 SCHEME_V->outport = car (args);
5120 s_return (SCHEME_V->value); 5370 s_return (SCHEME_V->value);
5121#endif 5371#endif
5122 5372
5123 case OP_RDSEXPR: 5373 case OP_RDSEXPR:
5124 switch (SCHEME_V->tok) 5374 switch (SCHEME_V->tok)
5125 { 5375 {
5126 case TOK_EOF: 5376 case TOK_EOF:
5127 s_return (S_EOF); 5377 s_return (S_EOF);
5128 /* NOTREACHED */
5129 5378
5130 case TOK_VEC: 5379 case TOK_VEC:
5131 s_save (SCHEME_A_ OP_RDVEC, NIL, NIL); 5380 s_save (SCHEME_A_ OP_RDVEC, NIL, NIL);
5132 /* fall through */ 5381 /* fall through */
5133 5382
… …
5136 5385
5137 if (SCHEME_V->tok == TOK_RPAREN) 5386 if (SCHEME_V->tok == TOK_RPAREN)
5138 s_return (NIL); 5387 s_return (NIL);
5139 else if (SCHEME_V->tok == TOK_DOT) 5388 else if (SCHEME_V->tok == TOK_DOT)
5140 Error_0 ("syntax error: illegal dot expression"); 5389 Error_0 ("syntax error: illegal dot expression");
5141 else 5390
5142 {
5143 SCHEME_V->nesting_stack[SCHEME_V->file_i]++; 5391 SCHEME_V->nesting_stack[SCHEME_V->file_i]++;
5144 s_save (SCHEME_A_ OP_RDLIST, NIL, NIL); 5392 s_save (SCHEME_A_ OP_RDLIST, NIL, NIL);
5145 s_goto (OP_RDSEXPR); 5393 s_goto (OP_RDSEXPR);
5146 }
5147 5394
5148 case TOK_QUOTE: 5395 case TOK_QUOTE:
5149 s_save (SCHEME_A_ OP_RDQUOTE, NIL, NIL); 5396 s_save (SCHEME_A_ OP_RDQUOTE, NIL, NIL);
5150 SCHEME_V->tok = token (SCHEME_A); 5397 SCHEME_V->tok = token (SCHEME_A);
5151 s_goto (OP_RDSEXPR); 5398 s_goto (OP_RDSEXPR);
… …
5157 { 5404 {
5158 s_save (SCHEME_A_ OP_RDQQUOTEVEC, NIL, NIL); 5405 s_save (SCHEME_A_ OP_RDQQUOTEVEC, NIL, NIL);
5159 SCHEME_V->tok = TOK_LPAREN; 5406 SCHEME_V->tok = TOK_LPAREN;
5160 s_goto (OP_RDSEXPR); 5407 s_goto (OP_RDSEXPR);
5161 } 5408 }
5162 else 5409
5163 s_save (SCHEME_A_ OP_RDQQUOTE, NIL, NIL); 5410 s_save (SCHEME_A_ OP_RDQQUOTE, NIL, NIL);
5164
5165 s_goto (OP_RDSEXPR); 5411 s_goto (OP_RDSEXPR);
5166 5412
5167 case TOK_COMMA: 5413 case TOK_COMMA:
5168 s_save (SCHEME_A_ OP_RDUNQUOTE, NIL, NIL); 5414 s_save (SCHEME_A_ OP_RDUNQUOTE, NIL, NIL);
5169 SCHEME_V->tok = token (SCHEME_A); 5415 SCHEME_V->tok = token (SCHEME_A);
… …
5173 s_save (SCHEME_A_ OP_RDUQTSP, NIL, NIL); 5419 s_save (SCHEME_A_ OP_RDUQTSP, NIL, NIL);
5174 SCHEME_V->tok = token (SCHEME_A); 5420 SCHEME_V->tok = token (SCHEME_A);
5175 s_goto (OP_RDSEXPR); 5421 s_goto (OP_RDSEXPR);
5176 5422
5177 case TOK_ATOM: 5423 case TOK_ATOM:
5178 s_return (mk_atom (SCHEME_A_ readstr_upto (SCHEME_A_ DELIMITERS))); 5424 s_return (mk_atom (SCHEME_A_ readstr_upto (SCHEME_A_ 0, DELIMITERS)));
5425
5426 case TOK_DOTATOM:
5427 SCHEME_V->strbuff[0] = '.';
5428 s_return (mk_atom (SCHEME_A_ readstr_upto (SCHEME_A_ 1, DELIMITERS)));
5429
5430 case TOK_STRATOM:
5431 //TODO: haven't checked whether the garbage collector could interfere and free x
5432 gc (SCHEME_A_ NIL, NIL); //TODO: superheavyhanded
5433 x = readstrexp (SCHEME_A_ '|');
5434 s_return (mk_atom (SCHEME_A_ strvalue (x)));
5179 5435
5180 case TOK_DQUOTE: 5436 case TOK_DQUOTE:
5181 x = readstrexp (SCHEME_A); 5437 x = readstrexp (SCHEME_A_ '"');
5182 5438
5183 if (x == S_F) 5439 if (x == S_F)
5184 Error_0 ("Error reading string"); 5440 Error_0 ("Error reading string");
5185 5441
5186 setimmutable (x); 5442 setimmutable (x);
… …
5190 { 5446 {
5191 pointer f = find_slot_in_env (SCHEME_A_ SCHEME_V->envir, SCHEME_V->SHARP_HOOK, 1); 5447 pointer f = find_slot_in_env (SCHEME_A_ SCHEME_V->envir, SCHEME_V->SHARP_HOOK, 1);
5192 5448
5193 if (f == NIL) 5449 if (f == NIL)
5194 Error_0 ("undefined sharp expression"); 5450 Error_0 ("undefined sharp expression");
5195 else 5451
5196 {
5197 SCHEME_V->code = cons (slot_value_in_env (f), NIL); 5452 SCHEME_V->code = cons (slot_value_in_env (f), NIL);
5198 s_goto (OP_EVAL); 5453 s_goto (OP_EVAL);
5199 }
5200 } 5454 }
5201 5455
5202 case TOK_SHARP_CONST: 5456 case TOK_SHARP_CONST:
5203 if ((x = mk_sharp_const (SCHEME_A_ readstr_upto (SCHEME_A_ DELIMITERS))) == NIL) 5457 if ((x = mk_sharp_const (SCHEME_A_ readstr_upto (SCHEME_A_ 0, DELIMITERS))) == NIL)
5204 Error_0 ("undefined sharp expression"); 5458 Error_0 ("undefined sharp expression");
5205 else 5459
5206 s_return (x); 5460 s_return (x);
5207 5461
5208 default: 5462 default:
5209 Error_0 ("syntax error: illegal token"); 5463 Error_0 ("syntax error: illegal token");
5210 } 5464 }
5211 5465
5212 break; 5466 break;
5213 5467
5214 case OP_RDLIST: 5468 case OP_RDLIST:
5215 SCHEME_V->args = cons (SCHEME_V->value, SCHEME_V->args); 5469 SCHEME_V->args = cons (SCHEME_V->value, args);
5216 SCHEME_V->tok = token (SCHEME_A); 5470 SCHEME_V->tok = token (SCHEME_A);
5217 5471
5218 switch (SCHEME_V->tok) 5472 switch (SCHEME_V->tok)
5219 { 5473 {
5220 case TOK_EOF: 5474 case TOK_EOF:
… …
5248 case OP_RDDOT: 5502 case OP_RDDOT:
5249 if (token (SCHEME_A) != TOK_RPAREN) 5503 if (token (SCHEME_A) != TOK_RPAREN)
5250 Error_0 ("syntax error: illegal dot expression"); 5504 Error_0 ("syntax error: illegal dot expression");
5251 5505
5252 SCHEME_V->nesting_stack[SCHEME_V->file_i]--; 5506 SCHEME_V->nesting_stack[SCHEME_V->file_i]--;
5253 s_return (reverse_in_place (SCHEME_A_ SCHEME_V->value, SCHEME_V->args)); 5507 s_return (reverse_in_place (SCHEME_A_ SCHEME_V->value, args));
5254 5508
5255 case OP_RDQUOTE: 5509 case OP_RDQUOTE:
5256 s_return (cons (SCHEME_V->QUOTE, cons (SCHEME_V->value, NIL))); 5510 s_return (cons (SCHEME_V->QUOTE, cons (SCHEME_V->value, NIL)));
5257 5511
5258 case OP_RDQQUOTE: 5512 case OP_RDQQUOTE:
… …
5280 SCHEME_V->args = SCHEME_V->value; 5534 SCHEME_V->args = SCHEME_V->value;
5281 s_goto (OP_VECTOR); 5535 s_goto (OP_VECTOR);
5282 5536
5283 /* ========== printing part ========== */ 5537 /* ========== printing part ========== */
5284 case OP_P0LIST: 5538 case OP_P0LIST:
5285 if (is_vector (SCHEME_V->args)) 5539 if (is_vector (args))
5286 { 5540 {
5287 putstr (SCHEME_A_ "#("); 5541 putstr (SCHEME_A_ "#(");
5288 SCHEME_V->args = cons (SCHEME_V->args, mk_integer (SCHEME_A_ 0)); 5542 SCHEME_V->args = cons (args, mk_integer (SCHEME_A_ 0));
5289 s_goto (OP_PVECFROM); 5543 s_goto (OP_PVECFROM);
5290 } 5544 }
5291 else if (is_environment (SCHEME_V->args)) 5545 else if (is_environment (args))
5292 { 5546 {
5293 putstr (SCHEME_A_ "#<ENVIRONMENT>"); 5547 putstr (SCHEME_A_ "#<ENVIRONMENT>");
5294 s_return (S_T); 5548 s_return (S_T);
5295 } 5549 }
5296 else if (!is_pair (SCHEME_V->args)) 5550 else if (!is_pair (args))
5297 { 5551 {
5298 printatom (SCHEME_A_ SCHEME_V->args, SCHEME_V->print_flag); 5552 printatom (SCHEME_A_ args, SCHEME_V->print_flag);
5299 s_return (S_T); 5553 s_return (S_T);
5300 }
5301 else if (car (SCHEME_V->args) == SCHEME_V->QUOTE && ok_abbrev (cdr (SCHEME_V->args)))
5302 {
5303 putstr (SCHEME_A_ "'");
5304 SCHEME_V->args = cadr (SCHEME_V->args);
5305 s_goto (OP_P0LIST);
5306 }
5307 else if (car (SCHEME_V->args) == SCHEME_V->QQUOTE && ok_abbrev (cdr (SCHEME_V->args)))
5308 {
5309 putstr (SCHEME_A_ "`");
5310 SCHEME_V->args = cadr (SCHEME_V->args);
5311 s_goto (OP_P0LIST);
5312 }
5313 else if (car (SCHEME_V->args) == SCHEME_V->UNQUOTE && ok_abbrev (cdr (SCHEME_V->args)))
5314 {
5315 putstr (SCHEME_A_ ",");
5316 SCHEME_V->args = cadr (SCHEME_V->args);
5317 s_goto (OP_P0LIST);
5318 }
5319 else if (car (SCHEME_V->args) == SCHEME_V->UNQUOTESP && ok_abbrev (cdr (SCHEME_V->args)))
5320 {
5321 putstr (SCHEME_A_ ",@");
5322 SCHEME_V->args = cadr (SCHEME_V->args);
5323 s_goto (OP_P0LIST);
5324 } 5554 }
5325 else 5555 else
5326 { 5556 {
5557 pointer a = car (args);
5558 pointer b = cdr (args);
5559 int ok_abbr = ok_abbrev (b);
5560 SCHEME_V->args = car (b);
5561
5562 if (a == SCHEME_V->QUOTE && ok_abbr)
5563 putcharacter (SCHEME_A_ '\'');
5564 else if (a == SCHEME_V->QQUOTE && ok_abbr)
5565 putcharacter (SCHEME_A_ '`');
5566 else if (a == SCHEME_V->UNQUOTE && ok_abbr)
5567 putcharacter (SCHEME_A_ ',');
5568 else if (a == SCHEME_V->UNQUOTESP && ok_abbr)
5327 putstr (SCHEME_A_ "("); 5569 putstr (SCHEME_A_ ",@");
5570 else
5571 {
5572 putcharacter (SCHEME_A_ '(');
5328 s_save (SCHEME_A_ OP_P1LIST, cdr (SCHEME_V->args), NIL); 5573 s_save (SCHEME_A_ OP_P1LIST, b, NIL);
5329 SCHEME_V->args = car (SCHEME_V->args); 5574 SCHEME_V->args = a;
5575 }
5576
5330 s_goto (OP_P0LIST); 5577 s_goto (OP_P0LIST);
5331 } 5578 }
5332 5579
5333 case OP_P1LIST: 5580 case OP_P1LIST:
5334 if (is_pair (SCHEME_V->args)) 5581 if (is_pair (args))
5335 { 5582 {
5336 s_save (SCHEME_A_ OP_P1LIST, cdr (SCHEME_V->args), NIL); 5583 s_save (SCHEME_A_ OP_P1LIST, cdr (args), NIL);
5337 putstr (SCHEME_A_ " "); 5584 putcharacter (SCHEME_A_ ' ');
5338 SCHEME_V->args = car (SCHEME_V->args); 5585 SCHEME_V->args = car (args);
5339 s_goto (OP_P0LIST); 5586 s_goto (OP_P0LIST);
5340 } 5587 }
5341 else if (is_vector (SCHEME_V->args)) 5588 else if (is_vector (args))
5342 { 5589 {
5343 s_save (SCHEME_A_ OP_P1LIST, NIL, NIL); 5590 s_save (SCHEME_A_ OP_P1LIST, NIL, NIL);
5344 putstr (SCHEME_A_ " . "); 5591 putstr (SCHEME_A_ " . ");
5345 s_goto (OP_P0LIST); 5592 s_goto (OP_P0LIST);
5346 } 5593 }
5347 else 5594 else
5348 { 5595 {
5349 if (SCHEME_V->args != NIL) 5596 if (args != NIL)
5350 { 5597 {
5351 putstr (SCHEME_A_ " . "); 5598 putstr (SCHEME_A_ " . ");
5352 printatom (SCHEME_A_ SCHEME_V->args, SCHEME_V->print_flag); 5599 printatom (SCHEME_A_ args, SCHEME_V->print_flag);
5353 } 5600 }
5354 5601
5355 putstr (SCHEME_A_ ")"); 5602 putcharacter (SCHEME_A_ ')');
5356 s_return (S_T); 5603 s_return (S_T);
5357 } 5604 }
5358 5605
5359 case OP_PVECFROM: 5606 case OP_PVECFROM:
5360 { 5607 {
5361 int i = ivalue_unchecked (cdr (SCHEME_V->args)); 5608 IVALUE i = ivalue_unchecked (cdr (args));
5362 pointer vec = car (SCHEME_V->args); 5609 pointer vec = car (args);
5363 int len = veclength (vec); 5610 uint32_t len = veclength (vec);
5364 5611
5365 if (i == len) 5612 if (i == len)
5366 { 5613 {
5367 putstr (SCHEME_A_ ")"); 5614 putcharacter (SCHEME_A_ ')');
5368 s_return (S_T); 5615 s_return (S_T);
5369 } 5616 }
5370 else 5617 else
5371 { 5618 {
5372 pointer elem = vector_elem (vec, i); 5619 pointer elem = vector_get (vec, i);
5373 5620
5374 ivalue_unchecked (cdr (SCHEME_V->args)) = i + 1; 5621 set_cdr (args, mk_integer (SCHEME_A_ i + 1));
5375 s_save (SCHEME_A_ OP_PVECFROM, SCHEME_V->args, NIL); 5622 s_save (SCHEME_A_ OP_PVECFROM, args, NIL);
5376 SCHEME_V->args = elem; 5623 SCHEME_V->args = elem;
5377 5624
5378 if (i > 0) 5625 if (i > 0)
5379 putstr (SCHEME_A_ " "); 5626 putcharacter (SCHEME_A_ ' ');
5380 5627
5381 s_goto (OP_P0LIST); 5628 s_goto (OP_P0LIST);
5382 } 5629 }
5383 } 5630 }
5384 } 5631 }
5385 5632
5386 return S_T; 5633 if (USE_ERROR_CHECKING) abort ();
5387} 5634}
5388 5635
5389static pointer 5636/* list ops */
5637ecb_hot static int
5390opexe_6 (SCHEME_P_ enum scheme_opcodes op) 5638opexe_6 (SCHEME_P_ enum scheme_opcodes op)
5391{ 5639{
5640 pointer args = SCHEME_V->args;
5641 pointer a = car (args);
5392 pointer x, y; 5642 pointer x, y;
5393 5643
5394 switch (op) 5644 switch (op)
5395 { 5645 {
5396 case OP_LIST_LENGTH: /* length *//* a.k */ 5646 case OP_LIST_LENGTH: /* length *//* a.k */
5397 { 5647 {
5398 long v = list_length (SCHEME_A_ car (SCHEME_V->args)); 5648 long v = list_length (SCHEME_A_ a);
5399 5649
5400 if (v < 0) 5650 if (v < 0)
5401 Error_1 ("length: not a list:", car (SCHEME_V->args)); 5651 Error_1 ("length: not a list:", a);
5402 5652
5403 s_return (mk_integer (SCHEME_A_ v)); 5653 s_return (mk_integer (SCHEME_A_ v));
5404 } 5654 }
5405 5655
5406 case OP_ASSQ: /* assq *//* a.k */ 5656 case OP_ASSQ: /* assq *//* a.k */
5407 x = car (SCHEME_V->args); 5657 x = a;
5408 5658
5409 for (y = cadr (SCHEME_V->args); is_pair (y); y = cdr (y)) 5659 for (y = cadr (args); is_pair (y); y = cdr (y))
5410 { 5660 {
5411 if (!is_pair (car (y))) 5661 if (!is_pair (car (y)))
5412 Error_0 ("unable to handle non pair element"); 5662 Error_0 ("unable to handle non pair element");
5413 5663
5414 if (x == caar (y)) 5664 if (x == caar (y))
5415 break; 5665 break;
5416 } 5666 }
5417 5667
5418 if (is_pair (y)) 5668 if (is_pair (y))
5419 s_return (car (y)); 5669 s_return (car (y));
5420 else 5670
5421 s_return (S_F); 5671 s_return (S_F);
5422
5423 5672
5424 case OP_GET_CLOSURE: /* get-closure-code *//* a.k */ 5673 case OP_GET_CLOSURE: /* get-closure-code *//* a.k */
5425 SCHEME_V->args = car (SCHEME_V->args); 5674 SCHEME_V->args = a;
5426 5675
5427 if (SCHEME_V->args == NIL) 5676 if (SCHEME_V->args == NIL)
5428 s_return (S_F); 5677 s_return (S_F);
5429 else if (is_closure (SCHEME_V->args)) 5678 else if (is_closure (SCHEME_V->args) || is_macro (SCHEME_V->args))
5430 s_return (cons (SCHEME_V->LAMBDA, closure_code (SCHEME_V->value))); 5679 s_return (cons (SCHEME_V->LAMBDA, closure_code (SCHEME_V->value)));
5431 else if (is_macro (SCHEME_V->args)) 5680
5432 s_return (cons (SCHEME_V->LAMBDA, closure_code (SCHEME_V->value)));
5433 else
5434 s_return (S_F); 5681 s_return (S_F);
5435 5682
5436 case OP_CLOSUREP: /* closure? */ 5683 case OP_CLOSUREP: /* closure? */
5437 /* 5684 /*
5438 * Note, macro object is also a closure. 5685 * Note, macro object is also a closure.
5439 * Therefore, (closure? <#MACRO>) ==> #t 5686 * Therefore, (closure? <#MACRO>) ==> #t
5687 * (schmorp) well, obviously not, fix? TODO
5440 */ 5688 */
5441 s_retbool (is_closure (car (SCHEME_V->args))); 5689 s_retbool (is_closure (a));
5442 5690
5443 case OP_MACROP: /* macro? */ 5691 case OP_MACROP: /* macro? */
5444 s_retbool (is_macro (car (SCHEME_V->args))); 5692 s_retbool (is_macro (a));
5445 } 5693 }
5446 5694
5447 return S_T; /* NOTREACHED */ 5695 if (USE_ERROR_CHECKING) abort ();
5448} 5696}
5449 5697
5698/* dispatch functions (opexe_x) return new opcode, or 0 for same opcode, or -1 to stop */
5450typedef pointer (*dispatch_func) (SCHEME_P_ enum scheme_opcodes); 5699typedef int (*dispatch_func)(SCHEME_P_ enum scheme_opcodes);
5451 5700
5452typedef int (*test_predicate) (pointer); 5701typedef int (*test_predicate)(pointer);
5453static int 5702
5703ecb_hot static int
5454is_any (pointer p) 5704tst_any (pointer p)
5455{ 5705{
5456 return 1; 5706 return 1;
5457} 5707}
5458 5708
5459static int 5709ecb_hot static int
5460is_nonneg (pointer p) 5710tst_inonneg (pointer p)
5461{ 5711{
5462 return ivalue (p) >= 0 && is_integer (p); 5712 return is_integer (p) && ivalue_unchecked (p) >= 0;
5713}
5714
5715ecb_hot static int
5716tst_is_list (SCHEME_P_ pointer p)
5717{
5718 return p == NIL || is_pair (p);
5463} 5719}
5464 5720
5465/* Correspond carefully with following defines! */ 5721/* Correspond carefully with following defines! */
5466static struct 5722static struct
5467{ 5723{
5468 test_predicate fct; 5724 test_predicate fct;
5469 const char *kind; 5725 const char *kind;
5470} tests[] = 5726} tests[] = {
5471{ 5727 { tst_any , 0 },
5472 { 0, 0}, /* unused */ 5728 { is_string , "string" },
5473 { is_any, 0}, 5729 { is_symbol , "symbol" },
5474 { is_string, "string" }, 5730 { is_port , "port" },
5475 { is_symbol, "symbol" },
5476 { is_port, "port" },
5477 { is_inport, "input port" }, 5731 { is_inport , "input port" },
5478 { is_outport, "output port" }, 5732 { is_outport , "output port" },
5479 { is_environment, "environment" }, 5733 { is_environment, "environment" },
5480 { is_pair, "pair" }, 5734 { is_pair , "pair" },
5481 { 0, "pair or '()" }, 5735 { 0 , "pair or '()" },
5482 { is_character, "character" }, 5736 { is_character , "character" },
5483 { is_vector, "vector" }, 5737 { is_vector , "vector" },
5484 { is_number, "number" }, 5738 { is_number , "number" },
5485 { is_integer, "integer" }, 5739 { is_integer , "integer" },
5486 { is_nonneg, "non-negative integer" } 5740 { tst_inonneg , "non-negative integer" }
5487}; 5741};
5488 5742
5489#define TST_NONE 0 5743#define TST_NONE 0 /* TST_NONE used for built-ins, 0 for internal ops */
5490#define TST_ANY "\001" 5744#define TST_ANY "\001"
5491#define TST_STRING "\002" 5745#define TST_STRING "\002"
5492#define TST_SYMBOL "\003" 5746#define TST_SYMBOL "\003"
5493#define TST_PORT "\004" 5747#define TST_PORT "\004"
5494#define TST_INPORT "\005" 5748#define TST_INPORT "\005"
5495#define TST_OUTPORT "\006" 5749#define TST_OUTPORT "\006"
5496#define TST_ENVIRONMENT "\007" 5750#define TST_ENVIRONMENT "\007"
5497#define TST_PAIR "\010" 5751#define TST_PAIR "\010"
5498#define TST_LIST "\011" 5752#define TST_LIST "\011"
5499#define TST_CHAR "\012" 5753#define TST_CHAR "\012"
5500#define TST_VECTOR "\013" 5754#define TST_VECTOR "\013"
5501#define TST_NUMBER "\014" 5755#define TST_NUMBER "\014"
5502#define TST_INTEGER "\015" 5756#define TST_INTEGER "\015"
5503#define TST_NATURAL "\016" 5757#define TST_NATURAL "\016"
5758
5759#define INF_ARG 0xff
5760#define UNNAMED_OP ""
5761
5762static const char opnames[] =
5763#define OP_DEF(func,name,minarity,maxarity,argtest,op) name "\x00"
5764#include "opdefines.h"
5765#undef OP_DEF
5766;
5767
5768ecb_cold static const char *
5769opname (int idx)
5770{
5771 const char *name = opnames;
5772
5773 /* should do this at compile time, but would require external program, right? */
5774 while (idx--)
5775 name += strlen (name) + 1;
5776
5777 return *name ? name : "ILLEGAL";
5778}
5779
5780ecb_cold static const char *
5781procname (pointer x)
5782{
5783 return opname (procnum (x));
5784}
5504 5785
5505typedef struct 5786typedef struct
5506{ 5787{
5507 dispatch_func func; 5788 uint8_t func;
5508 char *name; 5789 /*dispatch_func func;*//*TODO: maybe optionally keep the pointer, for speed? */
5790 uint8_t builtin;
5791#if USE_ERROR_CHECKING
5509 int min_arity; 5792 uint8_t min_arity;
5510 int max_arity; 5793 uint8_t max_arity;
5511 char *arg_tests_encoding; 5794 char arg_tests_encoding[3];
5795#endif
5512} op_code_info; 5796} op_code_info;
5513 5797
5514#define INF_ARG 0xffff
5515
5516static op_code_info dispatch_table[] = { 5798static const op_code_info dispatch_table[] = {
5517#define OP_DEF(A,B,C,D,E,OP) {A,B,C,D,E}, 5799#if USE_ERROR_CHECKING
5800#define OP_DEF(func,name,minarity,maxarity,argtest,op) { func, sizeof (name) > 1, minarity, maxarity, argtest },
5801#else
5802#define OP_DEF(func,name,minarity,maxarity,argtest,op) { func, sizeof (name) > 1 },
5803#endif
5518#include "opdefines.h" 5804#include "opdefines.h"
5805#undef OP_DEF
5519 {0} 5806 {0}
5520}; 5807};
5521 5808
5522static const char *
5523procname (pointer x)
5524{
5525 int n = procnum (x);
5526 const char *name = dispatch_table[n].name;
5527
5528 if (name == 0)
5529 name = "ILLEGAL!";
5530
5531 return name;
5532}
5533
5534/* kernel of this interpreter */ 5809/* kernel of this interpreter */
5535static void 5810ecb_hot static void
5536Eval_Cycle (SCHEME_P_ enum scheme_opcodes op) 5811Eval_Cycle (SCHEME_P_ enum scheme_opcodes op)
5537{ 5812{
5538 SCHEME_V->op = op; 5813 SCHEME_V->op = op;
5539 5814
5540 for (;;) 5815 for (;;)
5541 { 5816 {
5542 op_code_info *pcd = dispatch_table + SCHEME_V->op; 5817 const op_code_info *pcd = dispatch_table + SCHEME_V->op;
5543 5818
5544#if USE_ERROR_CHECKING 5819#if USE_ERROR_CHECKING
5545 if (pcd->name) /* if built-in function, check arguments */ 5820 if (pcd->builtin) /* if built-in function, check arguments */
5546 { 5821 {
5547 int ok = 1;
5548 char msg[STRBUFFSIZE]; 5822 char msg[STRBUFFSIZE];
5549 int n = list_length (SCHEME_A_ SCHEME_V->args); 5823 int n = list_length (SCHEME_A_ SCHEME_V->args);
5550 5824
5551 /* Check number of arguments */ 5825 /* Check number of arguments */
5552 if (ecb_expect_false (n < pcd->min_arity)) 5826 if (ecb_expect_false (n < pcd->min_arity))
5553 { 5827 {
5554 ok = 0;
5555 snprintf (msg, STRBUFFSIZE, "%s: needs%s %d argument(s)", 5828 snprintf (msg, STRBUFFSIZE, "%s: needs%s %d argument(s)",
5556 pcd->name, pcd->min_arity == pcd->max_arity ? "" : " at least", pcd->min_arity); 5829 opname (SCHEME_V->op), pcd->min_arity == pcd->max_arity ? "" : " at least", pcd->min_arity);
5830 xError_1 (SCHEME_A_ msg, 0);
5831 continue;
5557 } 5832 }
5558 else if (ecb_excpect_false (n > pcd->max_arity)) 5833 else if (ecb_expect_false (n > pcd->max_arity && pcd->max_arity != INF_ARG))
5559 { 5834 {
5560 ok = 0;
5561 snprintf (msg, STRBUFFSIZE, "%s: needs%s %d argument(s)", 5835 snprintf (msg, STRBUFFSIZE, "%s: needs%s %d argument(s)",
5562 pcd->name, pcd->min_arity == pcd->max_arity ? "" : " at most", pcd->max_arity); 5836 opname (SCHEME_V->op), pcd->min_arity == pcd->max_arity ? "" : " at most", pcd->max_arity);
5837 xError_1 (SCHEME_A_ msg, 0);
5838 continue;
5563 } 5839 }
5564 5840 else
5565 if (ecb_expect_false (ok))
5566 { 5841 {
5567 if (pcd->arg_tests_encoding) 5842 if (*pcd->arg_tests_encoding) /* literal 0 and TST_NONE treated the same */
5568 { 5843 {
5569 int i = 0; 5844 int i = 0;
5570 int j; 5845 int j;
5571 const char *t = pcd->arg_tests_encoding; 5846 const char *t = pcd->arg_tests_encoding;
5572 pointer arglist = SCHEME_V->args; 5847 pointer arglist = SCHEME_V->args;
5573 5848
5574 do 5849 do
5575 { 5850 {
5576 pointer arg = car (arglist); 5851 pointer arg = car (arglist);
5577 5852
5578 j = (int) t[0]; 5853 j = t[0];
5579 5854
5855 /*TODO: tst_is_list has different prototype - fix if other tests acquire same prototype */
5580 if (j == TST_LIST[0]) 5856 if (j == TST_LIST[0])
5581 { 5857 {
5582 if (arg != NIL && !is_pair (arg)) 5858 if (!tst_is_list (SCHEME_A_ arg))
5583 break; 5859 break;
5584 } 5860 }
5585 else 5861 else
5586 { 5862 {
5587 if (!tests[j].fct (arg)) 5863 if (!tests[j - 1].fct (arg))
5588 break; 5864 break;
5589 } 5865 }
5590 5866
5591 if (t[1] != 0) /* last test is replicated as necessary */ 5867 if (t < pcd->arg_tests_encoding + sizeof (pcd->arg_tests_encoding) - 1 && t[1]) /* last test is replicated as necessary */
5592 t++; 5868 t++;
5593 5869
5594 arglist = cdr (arglist); 5870 arglist = cdr (arglist);
5595 i++; 5871 i++;
5596 } 5872 }
5597 while (i < n); 5873 while (i < n);
5598 5874
5599 if (i < n) 5875 if (i < n)
5600 { 5876 {
5601 ok = 0;
5602 snprintf (msg, STRBUFFSIZE, "%s: argument %d must be: %s", pcd->name, i + 1, tests[j].kind); 5877 snprintf (msg, STRBUFFSIZE, "%s: argument %d must be: %s", opname (SCHEME_V->op), i + 1, tests[j].kind);
5878 xError_1 (SCHEME_A_ msg, 0);
5879 continue;
5603 } 5880 }
5604 } 5881 }
5605 } 5882 }
5606
5607 if (!ok)
5608 {
5609 if (xError_1 (SCHEME_A_ msg, 0) == NIL)
5610 return;
5611
5612 pcd = dispatch_table + SCHEME_V->op;
5613 }
5614 } 5883 }
5615#endif 5884#endif
5616 5885
5617 ok_to_freely_gc (SCHEME_A); 5886 ok_to_freely_gc (SCHEME_A);
5618 5887
5888 static const dispatch_func dispatch_funcs[] = {
5889 opexe_0,
5890 opexe_1,
5891 opexe_2,
5892 opexe_3,
5893 opexe_4,
5894 opexe_5,
5895 opexe_6,
5896 };
5897
5619 if (ecb_expect_false (pcd->func (SCHEME_A_ SCHEME_V->op) == NIL)) 5898 if (ecb_expect_false (dispatch_funcs [pcd->func] (SCHEME_A_ SCHEME_V->op) != 0))
5620 return; 5899 return;
5621 5900
5622 if (SCHEME_V->no_memory && USE_ERROR_CHECKING) 5901 if (SCHEME_V->no_memory && USE_ERROR_CHECKING)
5623 { 5902 {
5624 xwrstr ("No memory!\n"); 5903 putstr (SCHEME_A_ "No memory!\n");
5625 return; 5904 return;
5626 } 5905 }
5627 } 5906 }
5628} 5907}
5629 5908
5630/* ========== Initialization of internal keywords ========== */ 5909/* ========== Initialization of internal keywords ========== */
5631 5910
5632static void 5911ecb_cold static void
5633assign_syntax (SCHEME_P_ const char *name) 5912assign_syntax (SCHEME_P_ const char *name)
5634{ 5913{
5635 pointer x = oblist_add_by_name (SCHEME_A_ name); 5914 pointer x = oblist_add_by_name (SCHEME_A_ name);
5636 set_typeflag (x, typeflag (x) | T_SYNTAX); 5915 set_typeflag (x, typeflag (x) | T_SYNTAX);
5637} 5916}
5638 5917
5639static void 5918ecb_cold static void
5640assign_proc (SCHEME_P_ enum scheme_opcodes op, const char *name) 5919assign_proc (SCHEME_P_ enum scheme_opcodes op, const char *name)
5641{ 5920{
5642 pointer x = mk_symbol (SCHEME_A_ name); 5921 pointer x = mk_symbol (SCHEME_A_ name);
5643 pointer y = mk_proc (SCHEME_A_ op); 5922 pointer y = mk_proc (SCHEME_A_ op);
5644 new_slot_in_env (SCHEME_A_ x, y); 5923 new_slot_in_env (SCHEME_A_ x, y);
… …
5647static pointer 5926static pointer
5648mk_proc (SCHEME_P_ enum scheme_opcodes op) 5927mk_proc (SCHEME_P_ enum scheme_opcodes op)
5649{ 5928{
5650 pointer y = get_cell (SCHEME_A_ NIL, NIL); 5929 pointer y = get_cell (SCHEME_A_ NIL, NIL);
5651 set_typeflag (y, (T_PROC | T_ATOM)); 5930 set_typeflag (y, (T_PROC | T_ATOM));
5652 ivalue_unchecked (y) = op; 5931 set_ivalue (y, op);
5653 set_num_integer (y);
5654 return y; 5932 return y;
5655} 5933}
5656 5934
5657/* Hard-coded for the given keywords. Remember to rewrite if more are added! */ 5935/* Hard-coded for the given keywords. Remember to rewrite if more are added! */
5658static int 5936ecb_hot static int
5659syntaxnum (pointer p) 5937syntaxnum (pointer p)
5660{ 5938{
5661 const char *s = strvalue (car (p)); 5939 const char *s = strvalue (p);
5662 5940
5663 switch (strlength (car (p))) 5941 switch (strlength (p))
5664 { 5942 {
5665 case 2: 5943 case 2:
5666 if (s[0] == 'i') 5944 if (s[0] == 'i')
5667 return OP_IF0; /* if */ 5945 return OP_IF0; /* if */
5668 else 5946 else
… …
5723 return OP_C0STREAM; /* cons-stream */ 6001 return OP_C0STREAM; /* cons-stream */
5724 } 6002 }
5725} 6003}
5726 6004
5727#if USE_MULTIPLICITY 6005#if USE_MULTIPLICITY
5728scheme * 6006ecb_cold scheme *
5729scheme_init_new () 6007scheme_init_new ()
5730{ 6008{
5731 scheme *sc = malloc (sizeof (scheme)); 6009 scheme *sc = malloc (sizeof (scheme));
5732 6010
5733 if (!scheme_init (SCHEME_A)) 6011 if (!scheme_init (SCHEME_A))
… …
5738 else 6016 else
5739 return sc; 6017 return sc;
5740} 6018}
5741#endif 6019#endif
5742 6020
5743int 6021ecb_cold int
5744scheme_init (SCHEME_P) 6022scheme_init (SCHEME_P)
5745{ 6023{
5746 int i, n = sizeof (dispatch_table) / sizeof (dispatch_table[0]); 6024 int i, n = sizeof (dispatch_table) / sizeof (dispatch_table[0]);
5747 pointer x; 6025
6026 /* this memset is not strictly correct, as we assume (intcache)
6027 * that memset 0 will also set pointers to 0, but memset does
6028 * of course not guarantee that. screw such systems.
6029 */
6030 memset (SCHEME_V, 0, sizeof (*SCHEME_V));
5748 6031
5749 num_set_fixnum (num_zero, 1); 6032 num_set_fixnum (num_zero, 1);
5750 num_set_ivalue (num_zero, 0); 6033 num_set_ivalue (num_zero, 0);
5751 num_set_fixnum (num_one, 1); 6034 num_set_fixnum (num_one, 1);
5752 num_set_ivalue (num_one, 1); 6035 num_set_ivalue (num_one, 1);
… …
5764 SCHEME_V->save_inport = NIL; 6047 SCHEME_V->save_inport = NIL;
5765 SCHEME_V->loadport = NIL; 6048 SCHEME_V->loadport = NIL;
5766 SCHEME_V->nesting = 0; 6049 SCHEME_V->nesting = 0;
5767 SCHEME_V->interactive_repl = 0; 6050 SCHEME_V->interactive_repl = 0;
5768 6051
5769 if (alloc_cellseg (SCHEME_A_ FIRST_CELLSEGS) != FIRST_CELLSEGS) 6052 if (!alloc_cellseg (SCHEME_A))
5770 { 6053 {
5771#if USE_ERROR_CHECKING 6054#if USE_ERROR_CHECKING
5772 SCHEME_V->no_memory = 1; 6055 SCHEME_V->no_memory = 1;
5773 return 0; 6056 return 0;
5774#endif 6057#endif
5775 } 6058 }
5776 6059
5777 SCHEME_V->gc_verbose = 0; 6060 SCHEME_V->gc_verbose = 0;
5778 dump_stack_initialize (SCHEME_A); 6061 dump_stack_initialize (SCHEME_A);
5779 SCHEME_V->code = NIL; 6062 SCHEME_V->code = NIL;
5780 SCHEME_V->args = NIL; 6063 SCHEME_V->args = NIL;
5781 SCHEME_V->envir = NIL; 6064 SCHEME_V->envir = NIL;
6065 SCHEME_V->value = NIL;
5782 SCHEME_V->tracing = 0; 6066 SCHEME_V->tracing = 0;
5783 6067
5784 /* init NIL */ 6068 /* init NIL */
5785 set_typeflag (NIL, T_ATOM | T_MARK); 6069 set_typeflag (NIL, T_SPECIAL | T_ATOM);
5786 set_car (NIL, NIL); 6070 set_car (NIL, NIL);
5787 set_cdr (NIL, NIL); 6071 set_cdr (NIL, NIL);
5788 /* init T */ 6072 /* init T */
5789 set_typeflag (S_T, T_ATOM | T_MARK); 6073 set_typeflag (S_T, T_SPECIAL | T_ATOM);
5790 set_car (S_T, S_T); 6074 set_car (S_T, S_T);
5791 set_cdr (S_T, S_T); 6075 set_cdr (S_T, S_T);
5792 /* init F */ 6076 /* init F */
5793 set_typeflag (S_F, T_ATOM | T_MARK); 6077 set_typeflag (S_F, T_SPECIAL | T_ATOM);
5794 set_car (S_F, S_F); 6078 set_car (S_F, S_F);
5795 set_cdr (S_F, S_F); 6079 set_cdr (S_F, S_F);
5796 /* init EOF_OBJ */ 6080 /* init EOF_OBJ */
5797 set_typeflag (S_EOF, T_ATOM | T_MARK); 6081 set_typeflag (S_EOF, T_SPECIAL | T_ATOM);
5798 set_car (S_EOF, S_EOF); 6082 set_car (S_EOF, S_EOF);
5799 set_cdr (S_EOF, S_EOF); 6083 set_cdr (S_EOF, S_EOF);
5800 /* init sink */ 6084 /* init sink */
5801 set_typeflag (S_SINK, T_PAIR | T_MARK); 6085 set_typeflag (S_SINK, T_PAIR);
5802 set_car (S_SINK, NIL); 6086 set_car (S_SINK, NIL);
5803 6087
5804 /* init c_nest */ 6088 /* init c_nest */
5805 SCHEME_V->c_nest = NIL; 6089 SCHEME_V->c_nest = NIL;
5806 6090
5807 SCHEME_V->oblist = oblist_initial_value (SCHEME_A); 6091 SCHEME_V->oblist = oblist_initial_value (SCHEME_A);
5808 /* init global_env */ 6092 /* init global_env */
5809 new_frame_in_env (SCHEME_A_ NIL); 6093 new_frame_in_env (SCHEME_A_ NIL);
5810 SCHEME_V->global_env = SCHEME_V->envir; 6094 SCHEME_V->global_env = SCHEME_V->envir;
5811 /* init else */ 6095 /* init else */
5812 x = mk_symbol (SCHEME_A_ "else"); 6096 new_slot_in_env (SCHEME_A_ mk_symbol (SCHEME_A_ "else"), S_T);
5813 new_slot_in_env (SCHEME_A_ x, S_T);
5814 6097
5815 { 6098 {
5816 static const char *syntax_names[] = { 6099 static const char *syntax_names[] = {
5817 "lambda", "quote", "define", "if", "begin", "set!", 6100 "lambda", "quote", "define", "if", "begin", "set!",
5818 "let", "let*", "letrec", "cond", "delay", "and", 6101 "let", "let*", "letrec", "cond", "delay", "and",
… …
5821 6104
5822 for (i = 0; i < sizeof (syntax_names) / sizeof (*syntax_names); ++i) 6105 for (i = 0; i < sizeof (syntax_names) / sizeof (*syntax_names); ++i)
5823 assign_syntax (SCHEME_A_ syntax_names[i]); 6106 assign_syntax (SCHEME_A_ syntax_names[i]);
5824 } 6107 }
5825 6108
6109 // TODO: should iterate via strlen, to avoid n² complexity
5826 for (i = 0; i < n; i++) 6110 for (i = 0; i < n; i++)
5827 if (dispatch_table[i].name != 0) 6111 if (dispatch_table[i].builtin)
5828 assign_proc (SCHEME_A_ i, dispatch_table[i].name); 6112 assign_proc (SCHEME_A_ i, opname (i));
5829 6113
5830 /* initialization of global pointers to special symbols */ 6114 /* initialization of global pointers to special symbols */
5831 SCHEME_V->LAMBDA = mk_symbol (SCHEME_A_ "lambda"); 6115 SCHEME_V->LAMBDA = mk_symbol (SCHEME_A_ "lambda");
5832 SCHEME_V->QUOTE = mk_symbol (SCHEME_A_ "quote"); 6116 SCHEME_V->QUOTE = mk_symbol (SCHEME_A_ "quote");
5833 SCHEME_V->QQUOTE = mk_symbol (SCHEME_A_ "quasiquote"); 6117 SCHEME_V->QQUOTE = mk_symbol (SCHEME_A_ "quasiquote");
… …
5841 6125
5842 return !SCHEME_V->no_memory; 6126 return !SCHEME_V->no_memory;
5843} 6127}
5844 6128
5845#if USE_PORTS 6129#if USE_PORTS
5846void 6130ecb_cold void
5847scheme_set_input_port_file (SCHEME_P_ int fin) 6131scheme_set_input_port_file (SCHEME_P_ int fin)
5848{ 6132{
5849 SCHEME_V->inport = port_from_file (SCHEME_A_ fin, port_input); 6133 SCHEME_V->inport = port_from_file (SCHEME_A_ fin, port_input);
5850} 6134}
5851 6135
5852void 6136ecb_cold void
5853scheme_set_input_port_string (SCHEME_P_ char *start, char *past_the_end) 6137scheme_set_input_port_string (SCHEME_P_ char *start, char *past_the_end)
5854{ 6138{
5855 SCHEME_V->inport = port_from_string (SCHEME_A_ start, past_the_end, port_input); 6139 SCHEME_V->inport = port_from_string (SCHEME_A_ start, past_the_end, port_input);
5856} 6140}
5857 6141
5858void 6142ecb_cold void
5859scheme_set_output_port_file (SCHEME_P_ int fout) 6143scheme_set_output_port_file (SCHEME_P_ int fout)
5860{ 6144{
5861 SCHEME_V->outport = port_from_file (SCHEME_A_ fout, port_output); 6145 SCHEME_V->outport = port_from_file (SCHEME_A_ fout, port_output);
5862} 6146}
5863 6147
5864void 6148ecb_cold void
5865scheme_set_output_port_string (SCHEME_P_ char *start, char *past_the_end) 6149scheme_set_output_port_string (SCHEME_P_ char *start, char *past_the_end)
5866{ 6150{
5867 SCHEME_V->outport = port_from_string (SCHEME_A_ start, past_the_end, port_output); 6151 SCHEME_V->outport = port_from_string (SCHEME_A_ start, past_the_end, port_output);
5868} 6152}
5869#endif 6153#endif
5870 6154
5871void 6155ecb_cold void
5872scheme_set_external_data (SCHEME_P_ void *p) 6156scheme_set_external_data (SCHEME_P_ void *p)
5873{ 6157{
5874 SCHEME_V->ext_data = p; 6158 SCHEME_V->ext_data = p;
5875} 6159}
5876 6160
5877void 6161ecb_cold void
5878scheme_deinit (SCHEME_P) 6162scheme_deinit (SCHEME_P)
5879{ 6163{
5880 int i; 6164 int i;
5881 6165
5882#if SHOW_ERROR_LINE 6166#if SHOW_ERROR_LINE
… …
5908 SCHEME_V->loadport = NIL; 6192 SCHEME_V->loadport = NIL;
5909 SCHEME_V->gc_verbose = 0; 6193 SCHEME_V->gc_verbose = 0;
5910 gc (SCHEME_A_ NIL, NIL); 6194 gc (SCHEME_A_ NIL, NIL);
5911 6195
5912 for (i = 0; i <= SCHEME_V->last_cell_seg; i++) 6196 for (i = 0; i <= SCHEME_V->last_cell_seg; i++)
5913 free (SCHEME_V->alloc_seg[i]); 6197 free (SCHEME_V->cell_seg[i]);
5914 6198
5915#if SHOW_ERROR_LINE 6199#if SHOW_ERROR_LINE
5916 for (i = 0; i <= SCHEME_V->file_i; i++) 6200 for (i = 0; i <= SCHEME_V->file_i; i++)
5917 {
5918 if (SCHEME_V->load_stack[i].kind & port_file) 6201 if (SCHEME_V->load_stack[i].kind & port_file)
5919 { 6202 {
5920 fname = SCHEME_V->load_stack[i].rep.stdio.filename; 6203 fname = SCHEME_V->load_stack[i].rep.stdio.filename;
5921 6204
5922 if (fname) 6205 if (fname)
5923 free (fname); 6206 free (fname);
5924 } 6207 }
5925 }
5926#endif 6208#endif
5927} 6209}
5928 6210
5929void 6211ecb_cold void
5930scheme_load_file (SCHEME_P_ int fin) 6212scheme_load_file (SCHEME_P_ int fin)
5931{ 6213{
5932 scheme_load_named_file (SCHEME_A_ fin, 0); 6214 scheme_load_named_file (SCHEME_A_ fin, 0);
5933} 6215}
5934 6216
5935void 6217ecb_cold void
5936scheme_load_named_file (SCHEME_P_ int fin, const char *filename) 6218scheme_load_named_file (SCHEME_P_ int fin, const char *filename)
5937{ 6219{
5938 dump_stack_reset (SCHEME_A); 6220 dump_stack_reset (SCHEME_A);
5939 SCHEME_V->envir = SCHEME_V->global_env; 6221 SCHEME_V->envir = SCHEME_V->global_env;
5940 SCHEME_V->file_i = 0; 6222 SCHEME_V->file_i = 0;
5941 SCHEME_V->load_stack[0].unget = -1; 6223 SCHEME_V->load_stack[0].unget = -1;
5942 SCHEME_V->load_stack[0].kind = port_input | port_file; 6224 SCHEME_V->load_stack[0].kind = port_input | port_file;
5943 SCHEME_V->load_stack[0].rep.stdio.file = fin; 6225 SCHEME_V->load_stack[0].rep.stdio.file = fin;
5944#if USE_PORTS
5945 SCHEME_V->loadport = mk_port (SCHEME_A_ SCHEME_V->load_stack); 6226 SCHEME_V->loadport = mk_port (SCHEME_A_ SCHEME_V->load_stack);
5946#endif
5947 SCHEME_V->retcode = 0; 6227 SCHEME_V->retcode = 0;
5948 6228
5949#if USE_PORTS
5950 if (fin == STDIN_FILENO) 6229 if (fin == STDIN_FILENO)
5951 SCHEME_V->interactive_repl = 1; 6230 SCHEME_V->interactive_repl = 1;
5952#endif
5953 6231
5954#if USE_PORTS 6232#if USE_PORTS
5955#if SHOW_ERROR_LINE 6233#if SHOW_ERROR_LINE
5956 SCHEME_V->load_stack[0].rep.stdio.curr_line = 0; 6234 SCHEME_V->load_stack[0].rep.stdio.curr_line = 0;
5957 6235
… …
5961#endif 6239#endif
5962 6240
5963 SCHEME_V->inport = SCHEME_V->loadport; 6241 SCHEME_V->inport = SCHEME_V->loadport;
5964 SCHEME_V->args = mk_integer (SCHEME_A_ SCHEME_V->file_i); 6242 SCHEME_V->args = mk_integer (SCHEME_A_ SCHEME_V->file_i);
5965 Eval_Cycle (SCHEME_A_ OP_T0LVL); 6243 Eval_Cycle (SCHEME_A_ OP_T0LVL);
6244
5966 set_typeflag (SCHEME_V->loadport, T_ATOM); 6245 set_typeflag (SCHEME_V->loadport, T_ATOM);
5967 6246
5968 if (SCHEME_V->retcode == 0) 6247 if (SCHEME_V->retcode == 0)
5969 SCHEME_V->retcode = SCHEME_V->nesting != 0; 6248 SCHEME_V->retcode = SCHEME_V->nesting != 0;
5970} 6249}
5971 6250
5972void 6251ecb_cold void
5973scheme_load_string (SCHEME_P_ const char *cmd) 6252scheme_load_string (SCHEME_P_ const char *cmd)
5974{ 6253{
6254#if USE_PORTs
5975 dump_stack_reset (SCHEME_A); 6255 dump_stack_reset (SCHEME_A);
5976 SCHEME_V->envir = SCHEME_V->global_env; 6256 SCHEME_V->envir = SCHEME_V->global_env;
5977 SCHEME_V->file_i = 0; 6257 SCHEME_V->file_i = 0;
5978 SCHEME_V->load_stack[0].kind = port_input | port_string; 6258 SCHEME_V->load_stack[0].kind = port_input | port_string;
5979 SCHEME_V->load_stack[0].rep.string.start = (char *) cmd; /* This func respects const */ 6259 SCHEME_V->load_stack[0].rep.string.start = (char *)cmd; /* This func respects const */
5980 SCHEME_V->load_stack[0].rep.string.past_the_end = (char *) cmd + strlen (cmd); 6260 SCHEME_V->load_stack[0].rep.string.past_the_end = (char *)cmd + strlen (cmd);
5981 SCHEME_V->load_stack[0].rep.string.curr = (char *) cmd; 6261 SCHEME_V->load_stack[0].rep.string.curr = (char *)cmd;
5982#if USE_PORTS
5983 SCHEME_V->loadport = mk_port (SCHEME_A_ SCHEME_V->load_stack); 6262 SCHEME_V->loadport = mk_port (SCHEME_A_ SCHEME_V->load_stack);
5984#endif
5985 SCHEME_V->retcode = 0; 6263 SCHEME_V->retcode = 0;
5986 SCHEME_V->interactive_repl = 0; 6264 SCHEME_V->interactive_repl = 0;
5987 SCHEME_V->inport = SCHEME_V->loadport; 6265 SCHEME_V->inport = SCHEME_V->loadport;
5988 SCHEME_V->args = mk_integer (SCHEME_A_ SCHEME_V->file_i); 6266 SCHEME_V->args = mk_integer (SCHEME_A_ SCHEME_V->file_i);
5989 Eval_Cycle (SCHEME_A_ OP_T0LVL); 6267 Eval_Cycle (SCHEME_A_ OP_T0LVL);
5990 set_typeflag (SCHEME_V->loadport, T_ATOM); 6268 set_typeflag (SCHEME_V->loadport, T_ATOM);
5991 6269
5992 if (SCHEME_V->retcode == 0) 6270 if (SCHEME_V->retcode == 0)
5993 SCHEME_V->retcode = SCHEME_V->nesting != 0; 6271 SCHEME_V->retcode = SCHEME_V->nesting != 0;
6272#else
6273 abort ();
6274#endif
5994} 6275}
5995 6276
5996void 6277ecb_cold void
5997scheme_define (SCHEME_P_ pointer envir, pointer symbol, pointer value) 6278scheme_define (SCHEME_P_ pointer envir, pointer symbol, pointer value)
5998{ 6279{
5999 pointer x; 6280 pointer x;
6000 6281
6001 x = find_slot_in_env (SCHEME_A_ envir, symbol, 0); 6282 x = find_slot_in_env (SCHEME_A_ envir, symbol, 0);
… …
6006 new_slot_spec_in_env (SCHEME_A_ envir, symbol, value); 6287 new_slot_spec_in_env (SCHEME_A_ envir, symbol, value);
6007} 6288}
6008 6289
6009#if !STANDALONE 6290#if !STANDALONE
6010 6291
6011void 6292ecb_cold void
6012scheme_register_foreign_func (scheme * sc, scheme_registerable * sr) 6293scheme_register_foreign_func (scheme * sc, scheme_registerable * sr)
6013{ 6294{
6014 scheme_define (SCHEME_A_ SCHEME_V->global_env, mk_symbol (SCHEME_A_ sr->name), mk_foreign_func (SCHEME_A_ sr->f)); 6295 scheme_define (SCHEME_A_ SCHEME_V->global_env, mk_symbol (SCHEME_A_ sr->name), mk_foreign_func (SCHEME_A_ sr->f));
6015} 6296}
6016 6297
6017void 6298ecb_cold void
6018scheme_register_foreign_func_list (scheme * sc, scheme_registerable * list, int count) 6299scheme_register_foreign_func_list (scheme * sc, scheme_registerable * list, int count)
6019{ 6300{
6020 int i; 6301 int i;
6021 6302
6022 for (i = 0; i < count; i++) 6303 for (i = 0; i < count; i++)
6023 scheme_register_foreign_func (SCHEME_A_ list + i); 6304 scheme_register_foreign_func (SCHEME_A_ list + i);
6024} 6305}
6025 6306
6026pointer 6307ecb_cold pointer
6027scheme_apply0 (SCHEME_P_ const char *procname) 6308scheme_apply0 (SCHEME_P_ const char *procname)
6028{ 6309{
6029 return scheme_eval (SCHEME_A_ cons (mk_symbol (SCHEME_A_ procname), NIL)); 6310 return scheme_eval (SCHEME_A_ cons (mk_symbol (SCHEME_A_ procname), NIL));
6030} 6311}
6031 6312
6032void 6313ecb_cold void
6033save_from_C_call (SCHEME_P) 6314save_from_C_call (SCHEME_P)
6034{ 6315{
6035 pointer saved_data = cons (car (S_SINK), 6316 pointer saved_data = cons (car (S_SINK),
6036 cons (SCHEME_V->envir, 6317 cons (SCHEME_V->envir,
6037 SCHEME_V->dump)); 6318 SCHEME_V->dump));
… …
6041 /* Truncate the dump stack so TS will return here when done, not 6322 /* Truncate the dump stack so TS will return here when done, not
6042 directly resume pre-C-call operations. */ 6323 directly resume pre-C-call operations. */
6043 dump_stack_reset (SCHEME_A); 6324 dump_stack_reset (SCHEME_A);
6044} 6325}
6045 6326
6046void 6327ecb_cold void
6047restore_from_C_call (SCHEME_P) 6328restore_from_C_call (SCHEME_P)
6048{ 6329{
6049 set_car (S_SINK, caar (SCHEME_V->c_nest)); 6330 set_car (S_SINK, caar (SCHEME_V->c_nest));
6050 SCHEME_V->envir = cadar (SCHEME_V->c_nest); 6331 SCHEME_V->envir = cadar (SCHEME_V->c_nest);
6051 SCHEME_V->dump = cdr (cdar (SCHEME_V->c_nest)); 6332 SCHEME_V->dump = cdr (cdar (SCHEME_V->c_nest));
6052 /* Pop */ 6333 /* Pop */
6053 SCHEME_V->c_nest = cdr (SCHEME_V->c_nest); 6334 SCHEME_V->c_nest = cdr (SCHEME_V->c_nest);
6054} 6335}
6055 6336
6056/* "func" and "args" are assumed to be already eval'ed. */ 6337/* "func" and "args" are assumed to be already eval'ed. */
6057pointer 6338ecb_cold pointer
6058scheme_call (SCHEME_P_ pointer func, pointer args) 6339scheme_call (SCHEME_P_ pointer func, pointer args)
6059{ 6340{
6060 int old_repl = SCHEME_V->interactive_repl; 6341 int old_repl = SCHEME_V->interactive_repl;
6061 6342
6062 SCHEME_V->interactive_repl = 0; 6343 SCHEME_V->interactive_repl = 0;
… …
6069 SCHEME_V->interactive_repl = old_repl; 6350 SCHEME_V->interactive_repl = old_repl;
6070 restore_from_C_call (SCHEME_A); 6351 restore_from_C_call (SCHEME_A);
6071 return SCHEME_V->value; 6352 return SCHEME_V->value;
6072} 6353}
6073 6354
6074pointer 6355ecb_cold pointer
6075scheme_eval (SCHEME_P_ pointer obj) 6356scheme_eval (SCHEME_P_ pointer obj)
6076{ 6357{
6077 int old_repl = SCHEME_V->interactive_repl; 6358 int old_repl = SCHEME_V->interactive_repl;
6078 6359
6079 SCHEME_V->interactive_repl = 0; 6360 SCHEME_V->interactive_repl = 0;
… …
6091 6372
6092/* ========== Main ========== */ 6373/* ========== Main ========== */
6093 6374
6094#if STANDALONE 6375#if STANDALONE
6095 6376
6096int 6377ecb_cold int
6097main (int argc, char **argv) 6378main (int argc, char **argv)
6098{ 6379{
6099# if USE_MULTIPLICITY 6380# if USE_MULTIPLICITY
6100 scheme ssc; 6381 scheme ssc;
6101 scheme *const SCHEME_V = &ssc; 6382 scheme *const SCHEME_V = &ssc;
… …
6103# endif 6384# endif
6104 int fin; 6385 int fin;
6105 char *file_name = InitFile; 6386 char *file_name = InitFile;
6106 int retcode; 6387 int retcode;
6107 int isfile = 1; 6388 int isfile = 1;
6389#if EXPERIMENT
6390 system ("ps v $PPID");
6391#endif
6108 6392
6109 if (argc == 2 && strcmp (argv[1], "-?") == 0) 6393 if (argc == 2 && strcmp (argv[1], "-?") == 0)
6110 { 6394 {
6111 xwrstr ("Usage: tinyscheme -?\n"); 6395 putstr (SCHEME_A_ "Usage: tinyscheme -?\n");
6112 xwrstr ("or: tinyscheme [<file1> <file2> ...]\n"); 6396 putstr (SCHEME_A_ "or: tinyscheme [<file1> <file2> ...]\n");
6113 xwrstr ("followed by\n"); 6397 putstr (SCHEME_A_ "followed by\n");
6114 xwrstr (" -1 <file> [<arg1> <arg2> ...]\n"); 6398 putstr (SCHEME_A_ " -1 <file> [<arg1> <arg2> ...]\n");
6115 xwrstr (" -c <Scheme commands> [<arg1> <arg2> ...]\n"); 6399 putstr (SCHEME_A_ " -c <Scheme commands> [<arg1> <arg2> ...]\n");
6116 xwrstr ("assuming that the executable is named tinyscheme.\n"); 6400 putstr (SCHEME_A_ "assuming that the executable is named tinyscheme.\n");
6117 xwrstr ("Use - as filename for stdin.\n"); 6401 putstr (SCHEME_A_ "Use - as filename for stdin.\n");
6118 return 1; 6402 return 1;
6119 } 6403 }
6120 6404
6121 if (!scheme_init (SCHEME_A)) 6405 if (!scheme_init (SCHEME_A))
6122 { 6406 {
6123 xwrstr ("Could not initialize!\n"); 6407 putstr (SCHEME_A_ "Could not initialize!\n");
6124 return 2; 6408 return 2;
6125 } 6409 }
6126 6410
6127# if USE_PORTS 6411# if USE_PORTS
6128 scheme_set_input_port_file (SCHEME_A_ STDIN_FILENO); 6412 scheme_set_input_port_file (SCHEME_A_ STDIN_FILENO);
… …
6141 } 6425 }
6142#endif 6426#endif
6143 6427
6144 do 6428 do
6145 { 6429 {
6146#if USE_PORTS
6147 if (strcmp (file_name, "-") == 0) 6430 if (strcmp (file_name, "-") == 0)
6148 fin = STDIN_FILENO; 6431 fin = STDIN_FILENO;
6149 else if (strcmp (file_name, "-1") == 0 || strcmp (file_name, "-c") == 0) 6432 else if (strcmp (file_name, "-1") == 0 || strcmp (file_name, "-c") == 0)
6150 { 6433 {
6151 pointer args = NIL; 6434 pointer args = NIL;
… …
6169 scheme_define (SCHEME_A_ SCHEME_V->global_env, mk_symbol (SCHEME_A_ "*args*"), args); 6452 scheme_define (SCHEME_A_ SCHEME_V->global_env, mk_symbol (SCHEME_A_ "*args*"), args);
6170 6453
6171 } 6454 }
6172 else 6455 else
6173 fin = open (file_name, O_RDONLY); 6456 fin = open (file_name, O_RDONLY);
6174#endif
6175 6457
6176 if (isfile && fin < 0) 6458 if (isfile && fin < 0)
6177 { 6459 {
6178 xwrstr ("Could not open file "); xwrstr (file_name); xwrstr ("\n"); 6460 putstr (SCHEME_A_ "Could not open file ");
6461 putstr (SCHEME_A_ file_name);
6462 putcharacter (SCHEME_A_ '\n');
6179 } 6463 }
6180 else 6464 else
6181 { 6465 {
6182 if (isfile) 6466 if (isfile)
6183 scheme_load_named_file (SCHEME_A_ fin, file_name); 6467 scheme_load_named_file (SCHEME_A_ fin, file_name);
6184 else 6468 else
6185 scheme_load_string (SCHEME_A_ file_name); 6469 scheme_load_string (SCHEME_A_ file_name);
6186 6470
6187#if USE_PORTS
6188 if (!isfile || fin != STDIN_FILENO) 6471 if (!isfile || fin != STDIN_FILENO)
6189 { 6472 {
6190 if (SCHEME_V->retcode != 0) 6473 if (SCHEME_V->retcode != 0)
6191 { 6474 {
6192 xwrstr ("Errors encountered reading "); xwrstr (file_name); xwrstr ("\n"); 6475 putstr (SCHEME_A_ "Errors encountered reading ");
6476 putstr (SCHEME_A_ file_name);
6477 putcharacter (SCHEME_A_ '\n');
6193 } 6478 }
6194 6479
6195 if (isfile) 6480 if (isfile)
6196 close (fin); 6481 close (fin);
6197 } 6482 }
6198#endif
6199 } 6483 }
6200 6484
6201 file_name = *argv++; 6485 file_name = *argv++;
6202 } 6486 }
6203 while (file_name != 0); 6487 while (file_name != 0);

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