… | |
… | |
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 | |
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104 | // known forced types, also hardcoded in CBOR.pm |
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105 | enum |
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106 | { |
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107 | AS_CBOR = 0, |
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108 | AS_INT = 1, |
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109 | AS_BYTES = 2, |
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110 | AS_TEXT = 3, |
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111 | AS_FLOAT16 = 4, |
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112 | AS_FLOAT32 = 5, |
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113 | AS_FLOAT64 = 6, |
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114 | AS_MAP = 7, |
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115 | // possibly future enhancements: (generic) float, (generic) string |
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116 | }; |
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117 | |
104 | #define F_SHRINK 0x00000001UL |
118 | #define F_SHRINK 0x00000001UL |
105 | #define F_ALLOW_UNKNOWN 0x00000002UL |
119 | #define F_ALLOW_UNKNOWN 0x00000002UL |
106 | #define F_ALLOW_SHARING 0x00000004UL |
120 | #define F_ALLOW_SHARING 0x00000004UL |
107 | #define F_ALLOW_CYCLES 0x00000008UL |
121 | #define F_ALLOW_CYCLES 0x00000008UL |
108 | #define F_FORBID_OBJECTS 0x00000010UL |
122 | #define F_FORBID_OBJECTS 0x00000010UL |
… | |
… | |
226 | enc->cur = SvPVX (enc->sv) + cur; |
240 | enc->cur = SvPVX (enc->sv) + cur; |
227 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
241 | enc->end = SvPVX (enc->sv) + SvLEN (enc->sv) - 1; |
228 | } |
242 | } |
229 | } |
243 | } |
230 | |
244 | |
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245 | static void encode_sv (enc_t *enc, SV *sv); |
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246 | |
231 | ecb_inline void |
247 | ecb_inline void |
232 | encode_ch (enc_t *enc, char ch) |
248 | encode_ch (enc_t *enc, char ch) |
233 | { |
249 | { |
234 | need (enc, 1); |
250 | need (enc, 1); |
235 | *enc->cur++ = ch; |
251 | *enc->cur++ = ch; |
236 | } |
252 | } |
237 | |
253 | |
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|
254 | // used for tags, intregers, element counts and so on |
238 | static void |
255 | static void |
239 | encode_uint (enc_t *enc, int major, UV len) |
256 | encode_uint (enc_t *enc, int major, UV len) |
240 | { |
257 | { |
241 | need (enc, 9); |
258 | need (enc, 9); |
242 | |
259 | |
… | |
… | |
273 | *enc->cur++ = len >> 8; |
290 | *enc->cur++ = len >> 8; |
274 | *enc->cur++ = len; |
291 | *enc->cur++ = len; |
275 | } |
292 | } |
276 | } |
293 | } |
277 | |
294 | |
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295 | // encodes a perl value into a CBOR integer |
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296 | ecb_inline void |
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297 | encode_int (enc_t *enc, SV *sv) |
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298 | { |
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299 | if (SvIsUV (sv)) |
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300 | encode_uint (enc, MAJOR_POS_INT, SvUVX (sv)); |
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301 | else if (SvIVX (sv) >= 0) |
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302 | encode_uint (enc, MAJOR_POS_INT, SvIVX (sv)); |
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303 | else |
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304 | encode_uint (enc, MAJOR_NEG_INT, -(SvIVX (sv) + 1)); |
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305 | } |
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306 | |
278 | ecb_inline void |
307 | ecb_inline void |
279 | encode_tag (enc_t *enc, UV tag) |
308 | encode_tag (enc_t *enc, UV tag) |
280 | { |
309 | { |
281 | encode_uint (enc, MAJOR_TAG, tag); |
310 | encode_uint (enc, MAJOR_TAG, tag); |
282 | } |
311 | } |
… | |
… | |
343 | } |
372 | } |
344 | |
373 | |
345 | encode_str (enc, upgrade_utf8, utf8, str, len); |
374 | encode_str (enc, upgrade_utf8, utf8, str, len); |
346 | } |
375 | } |
347 | |
376 | |
348 | static void encode_sv (enc_t *enc, SV *sv); |
377 | ecb_inline void |
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378 | encode_float16 (enc_t *enc, NV nv) |
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379 | { |
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380 | need (enc, 1+2); |
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381 | |
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382 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT16; |
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383 | |
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384 | uint16_t fp = ecb_float_to_binary16 (nv); |
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385 | |
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386 | if (!ecb_big_endian ()) |
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387 | fp = ecb_bswap16 (fp); |
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388 | |
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389 | memcpy (enc->cur, &fp, 2); |
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390 | enc->cur += 2; |
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391 | } |
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392 | |
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393 | ecb_inline void |
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394 | encode_float32 (enc_t *enc, NV nv) |
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395 | { |
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396 | need (enc, 1+4); |
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397 | |
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398 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT32; |
|
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399 | |
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400 | uint32_t fp = ecb_float_to_binary32 (nv); |
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401 | |
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402 | if (!ecb_big_endian ()) |
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403 | fp = ecb_bswap32 (fp); |
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404 | |
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405 | memcpy (enc->cur, &fp, 4); |
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406 | enc->cur += 4; |
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407 | } |
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408 | |
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409 | ecb_inline void |
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410 | encode_float64 (enc_t *enc, NV nv) |
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411 | { |
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412 | need (enc, 1+8); |
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413 | |
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414 | *enc->cur++ = MAJOR_MISC | MISC_FLOAT64; |
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415 | |
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416 | uint64_t fp = ecb_double_to_binary64 (nv); |
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417 | |
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418 | if (!ecb_big_endian ()) |
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419 | fp = ecb_bswap64 (fp); |
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420 | |
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421 | memcpy (enc->cur, &fp, 8); |
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422 | enc->cur += 8; |
|
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423 | } |
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424 | |
|
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425 | ecb_inline void |
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426 | encode_bool (enc_t *enc, int istrue) |
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427 | { |
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428 | encode_ch (enc, istrue ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE); |
|
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429 | } |
|
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430 | |
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431 | // encodes an arrayref containing key-value pairs as CBOR map |
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432 | ecb_inline void |
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433 | encode_array_as_map (enc_t *enc, SV *sv) |
|
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434 | { |
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435 | if (enc->depth >= enc->cbor.max_depth) |
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436 | croak (ERR_NESTING_EXCEEDED); |
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437 | |
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438 | ++enc->depth; |
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439 | |
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440 | // as_map does error checking for us, but we re-check in case |
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441 | // things have changed. |
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442 | |
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443 | if (!SvROK (sv) || SvTYPE (SvRV (sv)) != SVt_PVAV) |
|
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444 | croak ("CBOR::XS::as_map requires an array reference (did you change the array after calling as_map?)"); |
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445 | |
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446 | AV *av = (AV *)SvRV (sv); |
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447 | int i, len = av_len (av); |
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448 | |
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449 | if (!(len & 1)) |
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450 | croak ("CBOR::XS::as_map requires an even number of elements (did you change the array after calling as_map?)"); |
|
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451 | |
|
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452 | encode_uint (enc, MAJOR_MAP, (len + 1) >> 1); |
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453 | |
|
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454 | for (i = 0; i <= len; ++i) |
|
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455 | { |
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456 | SV **svp = av_fetch (av, i, 0); |
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457 | encode_sv (enc, svp ? *svp : &PL_sv_undef); |
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458 | } |
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459 | |
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460 | --enc->depth; |
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461 | } |
|
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462 | |
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463 | ecb_inline void |
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464 | encode_forced (enc_t *enc, UV type, SV *sv) |
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465 | { |
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466 | switch (type) |
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467 | { |
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468 | case AS_CBOR: |
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469 | { |
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470 | STRLEN len; |
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471 | char *str = SvPVbyte (sv, len); |
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472 | |
|
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473 | need (enc, len); |
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474 | memcpy (enc->cur, str, len); |
|
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475 | enc->cur += len; |
|
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476 | } |
|
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477 | break; |
|
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478 | |
|
|
479 | case AS_BYTES: |
|
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480 | { |
|
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481 | STRLEN len; |
|
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482 | char *str = SvPVbyte (sv, len); |
|
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483 | encode_strref (enc, 0, 0, str, len); |
|
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484 | } |
|
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485 | break; |
|
|
486 | |
|
|
487 | case AS_TEXT: |
|
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488 | { |
|
|
489 | STRLEN len; |
|
|
490 | char *str = SvPVutf8 (sv, len); |
|
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491 | encode_strref (enc, 1, 1, str, len); |
|
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492 | } |
|
|
493 | break; |
|
|
494 | |
|
|
495 | case AS_INT: encode_int (enc, sv); break; |
|
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496 | |
|
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497 | case AS_FLOAT16: encode_float16 (enc, SvNV (sv)); break; |
|
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498 | case AS_FLOAT32: encode_float32 (enc, SvNV (sv)); break; |
|
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499 | case AS_FLOAT64: encode_float64 (enc, SvNV (sv)); break; |
|
|
500 | |
|
|
501 | case AS_MAP: encode_array_as_map (enc, sv); break; |
|
|
502 | |
|
|
503 | default: |
|
|
504 | croak ("encountered malformed CBOR::XS::Tagged object"); |
|
|
505 | } |
|
|
506 | } |
349 | |
507 | |
350 | static void |
508 | static void |
351 | encode_av (enc_t *enc, AV *av) |
509 | encode_av (enc_t *enc, AV *av) |
352 | { |
510 | { |
353 | int i, len = av_len (av); |
511 | int i, len = av_len (av); |
… | |
… | |
431 | |
589 | |
432 | HV *stash = SvSTASH (sv); |
590 | HV *stash = SvSTASH (sv); |
433 | |
591 | |
434 | if (stash == boolean_stash) |
592 | if (stash == boolean_stash) |
435 | { |
593 | { |
436 | encode_ch (enc, SvIV (sv) ? MAJOR_MISC | SIMPLE_TRUE : MAJOR_MISC | SIMPLE_FALSE); |
594 | encode_bool (enc, SvIV (sv)); |
437 | return; |
595 | return; |
438 | } |
596 | } |
439 | else if (stash == error_stash) |
597 | else if (stash == error_stash) |
440 | { |
598 | { |
441 | encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
599 | encode_ch (enc, MAJOR_MISC | SIMPLE_UNDEF); |
… | |
… | |
444 | else if (stash == tagged_stash) |
602 | else if (stash == tagged_stash) |
445 | { |
603 | { |
446 | if (svt != SVt_PVAV) |
604 | if (svt != SVt_PVAV) |
447 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
605 | croak ("encountered CBOR::XS::Tagged object that isn't an array"); |
448 | |
606 | |
|
|
607 | switch (av_len ((AV *)sv)) |
|
|
608 | { |
|
|
609 | case 2-1: |
|
|
610 | // actually a tagged value |
449 | encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
611 | encode_uint (enc, MAJOR_TAG, SvUV (*av_fetch ((AV *)sv, 0, 1))); |
450 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
612 | encode_sv (enc, *av_fetch ((AV *)sv, 1, 1)); |
|
|
613 | break; |
|
|
614 | |
|
|
615 | case 3-1: |
|
|
616 | // a forced type [value, type, undef] |
|
|
617 | encode_forced (enc, SvUV (*av_fetch ((AV *)sv, 1, 1)), *av_fetch ((AV *)sv, 0, 1)); |
|
|
618 | break; |
|
|
619 | |
|
|
620 | default: |
|
|
621 | croak ("encountered malformed CBOR::XS::Tagged object"); |
|
|
622 | } |
451 | |
623 | |
452 | return; |
624 | return; |
453 | } |
625 | } |
454 | } |
626 | } |
455 | |
627 | |
… | |
… | |
567 | |
739 | |
568 | if (ecb_expect_false (nv == (NV)(U32)nv)) |
740 | if (ecb_expect_false (nv == (NV)(U32)nv)) |
569 | encode_uint (enc, MAJOR_POS_INT, (U32)nv); |
741 | encode_uint (enc, MAJOR_POS_INT, (U32)nv); |
570 | //TODO: maybe I32? |
742 | //TODO: maybe I32? |
571 | else if (ecb_expect_false (nv == (float)nv)) |
743 | else if (ecb_expect_false (nv == (float)nv)) |
572 | { |
744 | 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 |
745 | else |
584 | { |
746 | 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 | } |
747 | } |
596 | |
748 | |
597 | static void |
749 | static void |
598 | encode_sv (enc_t *enc, SV *sv) |
750 | encode_sv (enc_t *enc, SV *sv) |
599 | { |
751 | { |
… | |
… | |
606 | encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len); |
758 | encode_strref (enc, enc->cbor.flags & F_TEXT_STRINGS, SvUTF8 (sv), str, len); |
607 | } |
759 | } |
608 | else if (SvNOKp (sv)) |
760 | else if (SvNOKp (sv)) |
609 | encode_nv (enc, sv); |
761 | encode_nv (enc, sv); |
610 | else if (SvIOKp (sv)) |
762 | else if (SvIOKp (sv)) |
611 | { |
763 | 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)) |
764 | else if (SvROK (sv)) |
620 | encode_rv (enc, SvRV (sv)); |
765 | encode_rv (enc, SvRV (sv)); |
621 | else if (!SvOK (sv)) |
766 | else if (!SvOK (sv)) |
622 | encode_ch (enc, MAJOR_MISC | SIMPLE_NULL); |
767 | encode_ch (enc, MAJOR_MISC | SIMPLE_NULL); |
623 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |
768 | else if (enc->cbor.flags & F_ALLOW_UNKNOWN) |