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authorGravatar Abseil Team <absl-team@google.com>2018-08-29 15:09:00 -0700
committerGravatar jueminyang <jueminyang@google.com>2018-08-30 10:48:15 -0400
commit0f4bc966754ec6cd28d5f03467d56f1efdc598e3 (patch)
tree8c146475fced5abb51b15e385c1a636216fa1640 /absl/strings
parent6c7e5ffc43decd92f7bdfc510ad8a245a20b6dea (diff)
Export of internal Abseil changes.
-- ed4be0cb9a708158187a0628c1c2167ae6783274 by Greg Falcon <gfalcon@google.com>: Refactor a string unit test into a template function for internal purposes. PiperOrigin-RevId: 210798880 -- e4c734be903ac7b3a88caf4b17909343c283a21a by Abseil Team <absl-team@google.com>: Add a note that the RFC3339_* format specifiers use %Y, and so do not produce 4-digit years on output nor require 4-digit years on input, as a strict reading of RFC3339 might require. PiperOrigin-RevId: 210785544 -- cfb5e32f9397e49ddb731445a191b36652fe2f6d by Greg Falcon <gfalcon@google.com>: Refactor a string unit test into a template function for internal purposes. PiperOrigin-RevId: 210776525 -- 105ee700e62869cfda2a37e6f7c2ea483f8fc75e by Xiaoyi Zhang <zhangxy@google.com>: Correctly define ABSL_HAVE_STD_STRING_VIEW for MSVC 2017. Currently the macro is not defined even though MSVC 2017 provides `std::string_view`, and this means both `absl::string_view` and `std::string_view` exist as distinct types. A bunch of places relying on the false assumption that `string_view::const_iterator` is `const char*` have to be fixed to build successfully. See related github issue https://github.com/abseil/abseil-cpp/issues/161. PiperOrigin-RevId: 210764947 GitOrigin-RevId: ed4be0cb9a708158187a0628c1c2167ae6783274 Change-Id: I7a9658b3201aa669db9d3d90474feb08072718c7
Diffstat (limited to 'absl/strings')
-rw-r--r--absl/strings/ascii.h4
-rw-r--r--absl/strings/escaping.cc2
-rw-r--r--absl/strings/internal/str_format/output.h4
-rw-r--r--absl/strings/internal/str_format/parser.cc4
-rw-r--r--absl/strings/internal/str_format/parser.h7
-rw-r--r--absl/strings/internal/str_format/parser_test.cc4
-rw-r--r--absl/strings/internal/str_split_internal.h2
-rw-r--r--absl/strings/str_split.cc13
-rw-r--r--absl/strings/str_split.h3
-rw-r--r--absl/strings/str_split_test.cc2
-rw-r--r--absl/strings/string_view_test.cc9
11 files changed, 30 insertions, 24 deletions
diff --git a/absl/strings/ascii.h b/absl/strings/ascii.h
index 4195d093..48a9da22 100644
--- a/absl/strings/ascii.h
+++ b/absl/strings/ascii.h
@@ -195,7 +195,7 @@ ABSL_MUST_USE_RESULT inline std::string AsciiStrToUpper(absl::string_view s) {
ABSL_MUST_USE_RESULT inline absl::string_view StripLeadingAsciiWhitespace(
absl::string_view str) {
auto it = std::find_if_not(str.begin(), str.end(), absl::ascii_isspace);
- return absl::string_view(it, str.end() - it);
+ return str.substr(it - str.begin());
}
// Strips in place whitespace from the beginning of the given string.
@@ -209,7 +209,7 @@ inline void StripLeadingAsciiWhitespace(std::string* str) {
ABSL_MUST_USE_RESULT inline absl::string_view StripTrailingAsciiWhitespace(
absl::string_view str) {
auto it = std::find_if_not(str.rbegin(), str.rend(), absl::ascii_isspace);
- return absl::string_view(str.begin(), str.rend() - it);
+ return str.substr(0, str.rend() - it);
}
// Strips in place whitespace from the end of the given string
diff --git a/absl/strings/escaping.cc b/absl/strings/escaping.cc
index 4a45942d..6742f446 100644
--- a/absl/strings/escaping.cc
+++ b/absl/strings/escaping.cc
@@ -104,7 +104,7 @@ bool CUnescapeInternal(absl::string_view source, bool leave_nulls_escaped,
char* dest, ptrdiff_t* dest_len, std::string* error) {
char* d = dest;
const char* p = source.data();
- const char* end = source.end();
+ const char* end = p + source.size();
const char* last_byte = end - 1;
// Small optimization for case where source = dest and there's no escaping
diff --git a/absl/strings/internal/str_format/output.h b/absl/strings/internal/str_format/output.h
index 3b0aa5e7..12ecd99e 100644
--- a/absl/strings/internal/str_format/output.h
+++ b/absl/strings/internal/str_format/output.h
@@ -69,10 +69,10 @@ class FILERawSink {
// Provide RawSink integration with common types from the STL.
inline void AbslFormatFlush(std::string* out, string_view s) {
- out->append(s.begin(), s.size());
+ out->append(s.data(), s.size());
}
inline void AbslFormatFlush(std::ostream* out, string_view s) {
- out->write(s.begin(), s.size());
+ out->write(s.data(), s.size());
}
template <class AbslCord, typename = typename std::enable_if<
diff --git a/absl/strings/internal/str_format/parser.cc b/absl/strings/internal/str_format/parser.cc
index 10114f48..c3e16fce 100644
--- a/absl/strings/internal/str_format/parser.cc
+++ b/absl/strings/internal/str_format/parser.cc
@@ -81,8 +81,8 @@ static constexpr std::int8_t kIds[] = {
template <bool is_positional>
bool ConsumeConversion(string_view *src, UnboundConversion *conv,
int *next_arg) {
- const char *pos = src->begin();
- const char *const end = src->end();
+ const char *pos = src->data();
+ const char *const end = pos + src->size();
char c;
// Read the next char into `c` and update `pos`. Reads '\0' if at end.
const auto get_char = [&] { c = pos == end ? '\0' : *pos++; };
diff --git a/absl/strings/internal/str_format/parser.h b/absl/strings/internal/str_format/parser.h
index 7414e153..1022f062 100644
--- a/absl/strings/internal/str_format/parser.h
+++ b/absl/strings/internal/str_format/parser.h
@@ -90,7 +90,7 @@ bool ParseFormatString(string_view src, Consumer consumer) {
int next_arg = 0;
while (!src.empty()) {
const char* percent =
- static_cast<const char*>(memchr(src.begin(), '%', src.size()));
+ static_cast<const char*>(memchr(src.data(), '%', src.size()));
if (!percent) {
// We found the last substring.
return consumer.Append(src);
@@ -98,7 +98,7 @@ bool ParseFormatString(string_view src, Consumer consumer) {
// We found a percent, so push the text run then process the percent.
size_t percent_loc = percent - src.data();
if (!consumer.Append(string_view(src.data(), percent_loc))) return false;
- if (percent + 1 >= src.end()) return false;
+ if (percent + 1 >= src.data() + src.size()) return false;
UnboundConversion conv;
@@ -178,7 +178,8 @@ class ParsedFormatBase {
const char* const base = data_.get();
string_view text(base, 0);
for (const auto& item : items_) {
- text = string_view(text.end(), (base + item.text_end) - text.end());
+ const char* const end = text.data() + text.size();
+ text = string_view(end, (base + item.text_end) - end);
if (item.is_conversion) {
if (!consumer.ConvertOne(item.conv, text)) return false;
} else {
diff --git a/absl/strings/internal/str_format/parser_test.cc b/absl/strings/internal/str_format/parser_test.cc
index e698020b..ac6886d0 100644
--- a/absl/strings/internal/str_format/parser_test.cc
+++ b/absl/strings/internal/str_format/parser_test.cc
@@ -66,10 +66,10 @@ class ConsumeUnboundConversionTest : public ::testing::Test {
typedef UnboundConversion Props;
string_view Consume(string_view* src) {
int next = 0;
- const char* prev_begin = src->begin();
+ const char* prev_begin = src->data();
o = UnboundConversion(); // refresh
ConsumeUnboundConversion(src, &o, &next);
- return {prev_begin, static_cast<size_t>(src->begin() - prev_begin)};
+ return {prev_begin, static_cast<size_t>(src->data() - prev_begin)};
}
bool Run(const char *fmt, bool force_positional = false) {
diff --git a/absl/strings/internal/str_split_internal.h b/absl/strings/internal/str_split_internal.h
index 73a30fdf..81e8d555 100644
--- a/absl/strings/internal/str_split_internal.h
+++ b/absl/strings/internal/str_split_internal.h
@@ -159,7 +159,7 @@ class SplitIterator {
}
const absl::string_view text = splitter_->text();
const absl::string_view d = delimiter_.Find(text, pos_);
- if (d.data() == text.end()) state_ = kLastState;
+ if (d.data() == text.data() + text.size()) state_ = kLastState;
curr_ = text.substr(pos_, d.data() - (text.data() + pos_));
pos_ += curr_.size() + d.size();
} while (!predicate_(curr_));
diff --git a/absl/strings/str_split.cc b/absl/strings/str_split.cc
index 0207213c..0a68c52d 100644
--- a/absl/strings/str_split.cc
+++ b/absl/strings/str_split.cc
@@ -43,10 +43,11 @@ absl::string_view GenericFind(absl::string_view text,
if (delimiter.empty() && text.length() > 0) {
// Special case for empty std::string delimiters: always return a zero-length
// absl::string_view referring to the item at position 1 past pos.
- return absl::string_view(text.begin() + pos + 1, 0);
+ return absl::string_view(text.data() + pos + 1, 0);
}
size_t found_pos = absl::string_view::npos;
- absl::string_view found(text.end(), 0); // By default, not found
+ absl::string_view found(text.data() + text.size(),
+ 0); // By default, not found
found_pos = find_policy.Find(text, delimiter, pos);
if (found_pos != absl::string_view::npos) {
found = absl::string_view(text.data() + found_pos,
@@ -87,7 +88,7 @@ absl::string_view ByString::Find(absl::string_view text, size_t pos) const {
// absl::string_view.
size_t found_pos = text.find(delimiter_[0], pos);
if (found_pos == absl::string_view::npos)
- return absl::string_view(text.end(), 0);
+ return absl::string_view(text.data() + text.size(), 0);
return text.substr(found_pos, 1);
}
return GenericFind(text, delimiter_, pos, LiteralPolicy());
@@ -100,7 +101,7 @@ absl::string_view ByString::Find(absl::string_view text, size_t pos) const {
absl::string_view ByChar::Find(absl::string_view text, size_t pos) const {
size_t found_pos = text.find(c_, pos);
if (found_pos == absl::string_view::npos)
- return absl::string_view(text.end(), 0);
+ return absl::string_view(text.data() + text.size(), 0);
return text.substr(found_pos, 1);
}
@@ -128,9 +129,9 @@ absl::string_view ByLength::Find(absl::string_view text,
// If the std::string is shorter than the chunk size we say we
// "can't find the delimiter" so this will be the last chunk.
if (substr.length() <= static_cast<size_t>(length_))
- return absl::string_view(text.end(), 0);
+ return absl::string_view(text.data() + text.size(), 0);
- return absl::string_view(substr.begin() + length_, 0);
+ return absl::string_view(substr.data() + length_, 0);
}
} // namespace absl
diff --git a/absl/strings/str_split.h b/absl/strings/str_split.h
index 4cfba8d0..c7eb280c 100644
--- a/absl/strings/str_split.h
+++ b/absl/strings/str_split.h
@@ -261,7 +261,8 @@ class MaxSplitsImpl {
: delimiter_(delimiter), limit_(limit), count_(0) {}
absl::string_view Find(absl::string_view text, size_t pos) {
if (count_++ == limit_) {
- return absl::string_view(text.end(), 0); // No more matches.
+ return absl::string_view(text.data() + text.size(),
+ 0); // No more matches.
}
return delimiter_.Find(text, pos);
}
diff --git a/absl/strings/str_split_test.cc b/absl/strings/str_split_test.cc
index 557f72e9..caa88277 100644
--- a/absl/strings/str_split_test.cc
+++ b/absl/strings/str_split_test.cc
@@ -763,7 +763,7 @@ template <typename Delimiter>
static bool IsFoundAtStartingPos(absl::string_view text, Delimiter d,
size_t starting_pos, int expected_pos) {
absl::string_view found = d.Find(text, starting_pos);
- return found.data() != text.end() &&
+ return found.data() != text.data() + text.size() &&
expected_pos == found.data() - text.data();
}
diff --git a/absl/strings/string_view_test.cc b/absl/strings/string_view_test.cc
index 30d5f00b..217fda04 100644
--- a/absl/strings/string_view_test.cc
+++ b/absl/strings/string_view_test.cc
@@ -816,11 +816,14 @@ TEST(StringViewTest, FrontBackSingleChar) {
// libc++, it doesn't allow `nullptr` in the constexpr context, with the error
// "read of dereferenced null pointer is not allowed in a constant expression".
// At run time, the behavior of `std::char_traits::length()` on `nullptr` is
-// undefined by the standard and usually results in crash with libc++. This
-// conforms to the standard, but `absl::string_view` implements a different
+// undefined by the standard and usually results in crash with libc++.
+// In MSVC, creating a constexpr string_view from nullptr also triggers an
+// "unevaluable pointer value" error. This compiler implementation conforms
+// to the standard, but `absl::string_view` implements a different
// behavior for historical reasons. We work around tests that construct
// `string_view` from `nullptr` when using libc++.
-#if !defined(ABSL_HAVE_STD_STRING_VIEW) || !defined(_LIBCPP_VERSION)
+#if !defined(ABSL_HAVE_STD_STRING_VIEW) || \
+ (!defined(_LIBCPP_VERSION) && !defined(_MSC_VER))
#define ABSL_HAVE_STRING_VIEW_FROM_NULLPTR 1
#endif // !defined(ABSL_HAVE_STD_STRING_VIEW) || !defined(_LIBCPP_VERSION)