diff options
author | Abseil Team <absl-team@google.com> | 2020-02-25 22:27:31 +0100 |
---|---|---|
committer | CJ Johnson <johnsoncj@google.com> | 2020-02-25 17:56:58 -0500 |
commit | b832dce8489ef7b6231384909fd9b68d5a5ff2b7 (patch) | |
tree | 3ad4be9a9a4105366be714da9458e076a77be18f /absl/strings/str_cat.cc | |
parent | aa844899c937bde5d2b24f276b59997e5b668bde (diff) |
Creation of LTS branch "lts_2020_02_25"20200225
- 0033c9ea91a52ade7c6b725aa2ef3cbe15463421 Fix build on FreeBSD/powerpc (#616) by kgotlinux <60880393+kgotlinux@users.noreply.github.com>
- 0d5ce2797eb695aee7e019e25323251ef6ffc277 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- b69c7d880caddfc25bf348dbcfe9d45fdd8bc6e6 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 2a5633fc077a58528cdbfe78720f3f6bfdc6044d Merge "Export of internal Abseil changes" by Xiaoyi Zhang <zhangxy@google.com>
- f9b3d6e493c1b6ab3dbdab71c5f8fa849db4abaf Add RISCV support to GetProgramCounter() (#621) by Khem Raj <raj.khem@gmail.com>
- 0232c87f21c26718aa3eb2d86678070f3b498a4e Add missing ABSL_HAVE_VDSO_SUPPORT conditional (#622) by Sinan Kaya <41809318+franksinankaya@users.noreply.github.com>
- 3c814105108680997d0821077694f663693b5382 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- c44657f55692eddf5504156645d1f4ec7b3acabd Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 98eb410c93ad059f9bba1bf43f5bb916fc92a5ea Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- bf78e977309c4cb946914b456404141ddac1c302 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- d95d1567165d449e4c213ea31a15cbb112a9865f Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 24713a7036a81498334807fa5c7ad3cb7c643711 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 72382c21fefed981b4b8a2a1b82e2d231c2c2e39 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 08a7e7bf972c8451855a5022f2faf3d3655db015 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 36bcd9599b3f48c99357ba61cf33584889306d6a Fix pointer format specifier in documentation (#614) by Andre Nguyen <andre-nguyen@users.noreply.github.com>
- 0f86336b6939ea673cc1cbe29189286cae67d63a Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- c512f118dde6ffd51cb7d8ac8804bbaf4d266c3a Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 37dd2562ec830d547a1524bb306be313ac3f2556 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 44427702614d7b86b064ba06a390f5eb2f85dbf6 fix: Add support for more ARM processors detection (#608) by Andre Nguyen <andre-nguyen@users.noreply.github.com>
- 159bf2bf6d1cc8087e02468d071e94d1177d1bae Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- a2e6adecc294dc4cd98cc285a9134ce58e0f2ad0 Use https links. (#586) by nlewycky <nicholas@mxc.ca>
- 564001ae506a17c51fa1223684a78f05f91d3d91 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- b3aaac8a37c467a1125c794196caa90d0957bdc3 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 63ee2f8877915a3565c29707dba8fe4d7822596a Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- a048203a881f11f4b7b8df5fb563aec85522f8db Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 1de0166368e2ae67347f92099d6dca3ab3a4a496 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- ad904b6cd3906ddf79878003d92b7bc08d7786ae Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 29235139149790f5afc430c11cec8f1eb1677607 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- bf86cfe165ef7d70dfe68f0b8fc0c018bc79a577 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 12bc53e0318d80569270a5b26ccbc62b52022b89 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 1e39f8626a4dadec1f56920b999dd4c3cfae333e Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 77f87009a34c745255bd84d8f2647040d831a2b3 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- d659fe54b35ab9b8e35c72e50a4b8814167d5a84 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- a4b757b5d42694306a9de853cee0a5fba9c7bbe9 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 0514227d2547793b23e209809276375e41c76617 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 7f4fe64af80fe3c84db8ea938276c3690573c45e Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 16d9fd58a51c6083234e2e9f8f50e49ed5ed02e4 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- bcaae6009c0833b73c6fa7bdd972921d8081a724 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 8ba96a8244bbe334d09542e92d566673a65c1f78 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 2103fd9acdf58279f739860bff3f8c9f4b845605 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 3df7b52a6ada51a72a23796b844549a7b282f1b8 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- fa8c75182fbfdeddb2485fc0d53baeda3f40b7a3 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 85092b4b648ca729c6263c4a302a41dfff28705e Fix Conan builds (#400) by Adrian Ostrowski <adr.ostrowski@gmail.com>
- e96ae2203b80d5ae2e0b7abe0c77b722b224b16d Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 20de2db748ca0471cfb61cb53e813dd12938c12b Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 846e5dbedac123d12455adcfe6f53c8b5dcbfeef Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 8207907f4f7fbaeeaa2b7340c76875e06fd345ba Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 078b89b3c046d230ef3ad39494e5852184eb528b Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 19b021cb3ff23048dfbe236a4e611925d8930831 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- ecc0033b54847f6c9ee37dbb0be8aa17e5b6d37b Always enable proper symbolize implementation on Windows ... by Loo Rong Jie <loorongjie@gmail.com>
- 2796d500aea5a31d26b8b24a33fab7a1c8fa2f32 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- e4c8d0eb8ef4acb5d7a4252b3b87feb391ef7e41 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- a15364ce4d88534ae2295127e5d8e32aefb6b446 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- ab3552a18964e7063c8324f45b3896a6a20b08a8 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- e9f9000c7c80993cb589d011616b7a8016e42f4a Fix ABSL_WAITER_MODE detection for mingw (#342) by Joe Sylve <Joe.Sylve@gmail.com>
- abea769b551f7a100f540967cb95debdb0080df8 Fix ABSL_HAVE_ALARM check on mingw (#341) by Joe Sylve <Joe.Sylve@gmail.com>
- 25597bdfc148e91e27678ec30efa52f4fc8c164f Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- aad33fefaa8f744d71ce747a53717b835bdf8e84 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 8fe7214fe2d7a45ecc4d85f6a524c6b1532426de Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- debac94cfb5a0fa75d1d97c399682bd1c72e3191 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 882b3501a31eb0e4ae4213afb91a0e43feda7d5f Fix spelling errors (#384) by Sungmann Cho <55860394+chosungmann@users.noreply.github.com>
- 502efe6d7841bff82b1aeef5500491fe9a48c635 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- ccdd1d57b6386ebc26fb0c7d99b604672437c124 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- ddf8e52a2918dd0ccec75d3e2426125fa3926724 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 6ec136281086b71da32b5fb068bd6e46b78a5c79 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- ac78ffc3bc0a8b295cab9a03817760fd460df2a1 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 5374c56e5196320681993869e3126b51edac2a43 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 97c1664b4bbab5f78fac2b151ab02656268fb34b Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 325fd7b042ff4ec34f7dd32e602cd81ad0e24b22 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 83c1d65c90a92aa49632b9ac5a793214bb0768bc Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- eb6b7bd23bc0815bfd784e1a74021ce166765280 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 9ddac555b7861dc178d0dbe758a1cfbed718784b Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 1948f6f967e34db9793cfa8b4bcbaf370d039fd8 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- a0d1e098c2f99694fa399b175a7ccf920762030e Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 2d2d7fbc283315b676159716376e739d3d23ed94 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 0302d1e5fa4fcdd1763b7d1bb3212943b1ae911d supppress unused variable warning for gcc (#372) by Martin <pizzard@users.noreply.github.com>
- 262d74ba81b1fc4d71f459555cde8ecb39786d68 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- f0afae0d49af3e15a7169e019634d7719143d94d Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 0e7afdcbd24c7e5b7cab4e0217d8886f1525b520 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 9a41ffdd3a0ccbcdd29c4e3886b28e06f2cd9c66 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 36910d3d7e9fccadd6603f232d0c4f54dcd47c7e [bazel] Add fixes for --incompatible_load_cc_rules_from_b... by Yannic <contact@yannic-bonenberger.com>
- aae8143cf9aa611f70d7ea9b95b8b8b383b2271a Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- d9aa92d7fb324314f9df487ac23d32a25650b742 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 321ab5303023c86cd15d9ddc5740fb4b4fde32e1 Export of internal Abseil changes by Abseil Team <absl-team@google.com>
- 4ef574064e75b86f115549e9eb4c7e806781b3ab Export of internal Abseil changes by Abseil Team <absl-team@google.com>
GitOrigin-RevId: 0033c9ea91a52ade7c6b725aa2ef3cbe15463421
Change-Id: I8a2b70063cb3ab40c6943a6db0fe40cae71ed8d7
Diffstat (limited to 'absl/strings/str_cat.cc')
-rw-r--r-- | absl/strings/str_cat.cc | 49 |
1 files changed, 24 insertions, 25 deletions
diff --git a/absl/strings/str_cat.cc b/absl/strings/str_cat.cc index 73b9e0ba..d9afe2f3 100644 --- a/absl/strings/str_cat.cc +++ b/absl/strings/str_cat.cc @@ -15,35 +15,34 @@ #include "absl/strings/str_cat.h" #include <assert.h> + #include <algorithm> #include <cstdint> #include <cstring> #include "absl/strings/ascii.h" #include "absl/strings/internal/resize_uninitialized.h" +#include "absl/strings/numbers.h" namespace absl { -inline namespace lts_2019_08_08 { +ABSL_NAMESPACE_BEGIN AlphaNum::AlphaNum(Hex hex) { + static_assert(numbers_internal::kFastToBufferSize >= 32, + "This function only works when output buffer >= 32 bytes long"); char* const end = &digits_[numbers_internal::kFastToBufferSize]; - char* writer = end; - uint64_t value = hex.value; - static const char hexdigits[] = "0123456789abcdef"; - do { - *--writer = hexdigits[value & 0xF]; - value >>= 4; - } while (value != 0); - - char* beg; - if (end - writer < hex.width) { - beg = end - hex.width; - std::fill_n(beg, writer - beg, hex.fill); + auto real_width = + absl::numbers_internal::FastHexToBufferZeroPad16(hex.value, end - 16); + if (real_width >= hex.width) { + piece_ = absl::string_view(end - real_width, real_width); } else { - beg = writer; + // Pad first 16 chars because FastHexToBufferZeroPad16 pads only to 16 and + // max pad width can be up to 20. + std::memset(end - 32, hex.fill, 16); + // Patch up everything else up to the real_width. + std::memset(end - real_width - 16, hex.fill, 16); + piece_ = absl::string_view(end - hex.width, hex.width); } - - piece_ = absl::string_view(beg, end - beg); } AlphaNum::AlphaNum(Dec dec) { @@ -100,7 +99,7 @@ std::string StrCat(const AlphaNum& a, const AlphaNum& b) { std::string result; absl::strings_internal::STLStringResizeUninitialized(&result, a.size() + b.size()); - char* const begin = &*result.begin(); + char* const begin = &result[0]; char* out = begin; out = Append(out, a); out = Append(out, b); @@ -112,7 +111,7 @@ std::string StrCat(const AlphaNum& a, const AlphaNum& b, const AlphaNum& c) { std::string result; strings_internal::STLStringResizeUninitialized( &result, a.size() + b.size() + c.size()); - char* const begin = &*result.begin(); + char* const begin = &result[0]; char* out = begin; out = Append(out, a); out = Append(out, b); @@ -126,7 +125,7 @@ std::string StrCat(const AlphaNum& a, const AlphaNum& b, const AlphaNum& c, std::string result; strings_internal::STLStringResizeUninitialized( &result, a.size() + b.size() + c.size() + d.size()); - char* const begin = &*result.begin(); + char* const begin = &result[0]; char* out = begin; out = Append(out, a); out = Append(out, b); @@ -145,7 +144,7 @@ std::string CatPieces(std::initializer_list<absl::string_view> pieces) { for (const absl::string_view piece : pieces) total_size += piece.size(); strings_internal::STLStringResizeUninitialized(&result, total_size); - char* const begin = &*result.begin(); + char* const begin = &result[0]; char* out = begin; for (const absl::string_view piece : pieces) { const size_t this_size = piece.size(); @@ -177,7 +176,7 @@ void AppendPieces(std::string* dest, } strings_internal::STLStringResizeUninitialized(dest, total_size); - char* const begin = &*dest->begin(); + char* const begin = &(*dest)[0]; char* out = begin + old_size; for (const absl::string_view piece : pieces) { const size_t this_size = piece.size(); @@ -202,7 +201,7 @@ void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b) { std::string::size_type old_size = dest->size(); strings_internal::STLStringResizeUninitialized( dest, old_size + a.size() + b.size()); - char* const begin = &*dest->begin(); + char* const begin = &(*dest)[0]; char* out = begin + old_size; out = Append(out, a); out = Append(out, b); @@ -217,7 +216,7 @@ void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b, std::string::size_type old_size = dest->size(); strings_internal::STLStringResizeUninitialized( dest, old_size + a.size() + b.size() + c.size()); - char* const begin = &*dest->begin(); + char* const begin = &(*dest)[0]; char* out = begin + old_size; out = Append(out, a); out = Append(out, b); @@ -234,7 +233,7 @@ void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b, std::string::size_type old_size = dest->size(); strings_internal::STLStringResizeUninitialized( dest, old_size + a.size() + b.size() + c.size() + d.size()); - char* const begin = &*dest->begin(); + char* const begin = &(*dest)[0]; char* out = begin + old_size; out = Append(out, a); out = Append(out, b); @@ -243,5 +242,5 @@ void StrAppend(std::string* dest, const AlphaNum& a, const AlphaNum& b, assert(out == begin + dest->size()); } -} // inline namespace lts_2019_08_08 +ABSL_NAMESPACE_END } // namespace absl |