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Comparing CBOR-XS/XS.xs (file contents):
Revision 1.65 by root, Thu Nov 15 19:52:41 2018 UTC vs.
Revision 1.67 by root, Sun Nov 29 21:35:06 2020 UTC

… …
99 CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8 99 CBOR_TAG_MIME = 36, // mime message rfc2045, utf-8
100 100
101 CBOR_TAG_MAGIC = 55799, // self-describe cbor 101 CBOR_TAG_MAGIC = 55799, // self-describe cbor
102}; 102};
103 103
104// known forced types, also hardcoded in CBOR.pm
105enum
106{
107 AS_CBOR = 0,
108 AS_BYTES = 1,
109 AS_TEXT = 2,
110 AS_INT = 3,
111 AS_FLOAT16 = 4,
112 AS_FLOAT32 = 5,
113 AS_FLOAT64 = 6,
114 // possibly future enhancements: (generic) float, (generic) string
115};
116
104#define F_SHRINK 0x00000001UL 117#define F_SHRINK 0x00000001UL
105#define F_ALLOW_UNKNOWN 0x00000002UL 118#define F_ALLOW_UNKNOWN 0x00000002UL
106#define F_ALLOW_SHARING 0x00000004UL 119#define F_ALLOW_SHARING 0x00000004UL
107#define F_ALLOW_CYCLES 0x00000008UL 120#define F_ALLOW_CYCLES 0x00000008UL
108#define F_FORBID_OBJECTS 0x00000010UL 121#define F_FORBID_OBJECTS 0x00000010UL
… …
233{ 246{
234 need (enc, 1); 247 need (enc, 1);
235 *enc->cur++ = ch; 248 *enc->cur++ = ch;
236} 249}
237 250
251// used for tags, intregers, element counts and so on
238static void 252static void
239encode_uint (enc_t *enc, int major, UV len) 253encode_uint (enc_t *enc, int major, UV len)
240{ 254{
241 need (enc, 9); 255 need (enc, 9);
242 256
… …
273 *enc->cur++ = len >> 8; 287 *enc->cur++ = len >> 8;
274 *enc->cur++ = len; 288 *enc->cur++ = len;
275 } 289 }
276} 290}
277 291
292// encodes a perl value into a CBOR integer
293ecb_inline void
294encode_int (enc_t *enc, SV *sv)
295{
296 if (SvIsUV (sv))
297 encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
298 else if (SvIVX (sv) >= 0)
299 encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
300 else
301 encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
302}
303
278ecb_inline void 304ecb_inline void
279encode_tag (enc_t *enc, UV tag) 305encode_tag (enc_t *enc, UV tag)
280{ 306{
281 encode_uint (enc, MAJOR_TAG, tag); 307 encode_uint (enc, MAJOR_TAG, tag);
282} 308}
… …
341 ++enc->stringref_idx; 367 ++enc->stringref_idx;
342 } 368 }
343 } 369 }
344 370
345 encode_str (enc, upgrade_utf8, utf8, str, len); 371 encode_str (enc, upgrade_utf8, utf8, str, len);
372}
373
374ecb_inline void
375encode_float16 (enc_t *enc, NV nv)
376{
377 need (enc, 1+2);
378
379 *enc->cur++ = MAJOR_MISC | MISC_FLOAT16;
380
381 uint16_t fp = ecb_float_to_binary16 (nv);
382
383 if (!ecb_big_endian ())
384 fp = ecb_bswap16 (fp);
385
386 memcpy (enc->cur, &fp, 2);
387 enc->cur += 2;
388}
389
390ecb_inline void
391encode_float32 (enc_t *enc, NV nv)
392{
393 need (enc, 1+4);
394
395 *enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
396
397 uint32_t fp = ecb_float_to_binary32 (nv);
398
399 if (!ecb_big_endian ())
400 fp = ecb_bswap32 (fp);
401
402 memcpy (enc->cur, &fp, 4);
403 enc->cur += 4;
404}
405
406ecb_inline void
407encode_float64 (enc_t *enc, NV nv)
408{
409 need (enc, 1+8);
410
411 *enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
412
413 uint64_t fp = ecb_double_to_binary64 (nv);
414
415 if (!ecb_big_endian ())
416 fp = ecb_bswap64 (fp);
417
418 memcpy (enc->cur, &fp, 8);
419 enc->cur += 8;
420}
421
422ecb_inline void
423encode_forced (enc_t *enc, UV type, SV *sv)
424{
425 switch (type)
426 {
427 case AS_CBOR:
428 {
429 STRLEN len;
430 char *str = SvPVbyte (sv, len);
431
432 need (enc, len);
433 memcpy (enc->cur, str, len);
434 enc->cur += len;
435 }
436 break;
437
438 case AS_BYTES:
439 {
440 STRLEN len;
441 char *str = SvPVbyte (sv, len);
442 encode_strref (enc, 0, 0, str, len);
443 }
444 break;
445
446 case AS_TEXT:
447 {
448 STRLEN len;
449 char *str = SvPVutf8 (sv, len);
450 encode_strref (enc, 1, 1, str, len);
451 }
452 break;
453
454 case AS_INT: encode_int (enc, sv); break;
455 case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break;
456 case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break;
457 case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break;
458
459 default:
460 croak ("encountered malformed CBOR::XS::Tagged object");
461 }
346} 462}
347 463
348static void encode_sv (enc_t *enc, SV *sv); 464static void encode_sv (enc_t *enc, SV *sv);
349 465
350static void 466static void
… …
444 else if (stash == tagged_stash) 560 else if (stash == tagged_stash)
445 { 561 {
446 if (svt != SVt_PVAV) 562 if (svt != SVt_PVAV)
447 croak ("encountered CBOR::XS::Tagged object that isn't an array"); 563 croak ("encountered CBOR::XS::Tagged object that isn't an array");
448 564
565 switch (av_len ((AV *)sv))
566 {
567 case 2-1:
568 // actually a tagged value
449 encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1))); 569 encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1)));
450 encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); 570 encode_sv (enc, *av_fetch ((AV *)sv, 1, 1));
571 break;
572
573 case 3-1:
574 // a forced type [value, type, undef]
575 encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1));
576 break;
577
578 default:
579 croak ("encountered malformed CBOR::XS::Tagged object");
580 }
451 581
452 return; 582 return;
453 } 583 }
454 } 584 }
455 585
… …
567 697
568 if (ecb_expect_false (nv == (NV)(U32)nv)) 698 if (ecb_expect_false (nv == (NV)(U32)nv))
569 encode_uint (enc, MAJOR_POS_INT, (U32)nv); 699 encode_uint (enc, MAJOR_POS_INT, (U32)nv);
570 //TODO: maybe I32? 700 //TODO: maybe I32?
571 else if (ecb_expect_false (nv == (float)nv)) 701 else if (ecb_expect_false (nv == (float)nv))
572 { 702 encode_float32 (enc, nv);
573 *enc->cur++ = MAJOR_MISC | MISC_FLOAT32;
574
575 uint32_t fp = ecb_float_to_binary32 (nv);
576
577 if (!ecb_big_endian ())
578 fp = ecb_bswap32 (fp);
579
580 memcpy (enc->cur, &fp, 4);
581 enc->cur += 4;
582 }
583 else 703 else
584 { 704 encode_float64 (enc, nv);
585 *enc->cur++ = MAJOR_MISC | MISC_FLOAT64;
586
587 uint64_t fp = ecb_double_to_binary64 (nv);
588
589 if (!ecb_big_endian ())
590 fp = ecb_bswap64 (fp);
591
592 memcpy (enc->cur, &fp, 8);
593 enc->cur += 8;
594 }
595} 705}
596 706
597static void 707static void
598encode_sv (enc_t *enc, SV *sv) 708encode_sv (enc_t *enc, SV *sv)
599{ 709{
… …
606 encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len); 716 encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len);
607 } 717 }
608 else if (SvNOKp (sv)) 718 else if (SvNOKp (sv))
609 encode_nv (enc, sv); 719 encode_nv (enc, sv);
610 else if (SvIOKp (sv)) 720 else if (SvIOKp (sv))
611 { 721 encode_int (enc, sv);
612 if (SvIsUV (sv))
613 encode_uint (enc, MAJOR_POS_INT, SvUVX (sv));
614 else if (SvIVX (sv) >= 0)
615 encode_uint (enc, MAJOR_POS_INT, SvIVX (sv));
616 else
617 encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1));
618 }
619 else if (SvROK (sv)) 722 else if (SvROK (sv))
620 encode_rv (enc, SvRV (sv)); 723 encode_rv (enc, SvRV (sv));
621 else if (!SvOK (sv)) 724 else if (!SvOK (sv))
622 encode_ch (enc, MAJOR_MISC | SIMPLE_NULL); 725 encode_ch (enc, MAJOR_MISC | SIMPLE_NULL);
623 else if (enc->cbor.flags & F_ALLOW_UNKNOWN) 726 else if (enc->cbor.flags & F_ALLOW_UNKNOWN)

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