Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 473 insertions, 0 deletions

diff --git a/intl/components/src/NumberFormatterSkeleton.cpp b/intl/components/src/NumberFormatterSkeleton.cpp
new file mode 100644
index 0000000000..5f62d77c2b
--- /dev/null
+++ b/intl/components/src/NumberFormatterSkeleton.cpp
@@ -0,0 +1,473 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "NumberFormatterSkeleton.h"
+#include "NumberFormat.h"
+
+#include "MeasureUnitGenerated.h"
+
+#include "mozilla/RangedPtr.h"
+
+#include <algorithm>
+#include <limits>
+
+#include "unicode/unumberrangeformatter.h"
+
+namespace mozilla::intl {
+
+NumberFormatterSkeleton::NumberFormatterSkeleton(
+    const NumberFormatOptions& options) {
+  if (options.mCurrency.isSome()) {
+    if (!currency(options.mCurrency->first) ||
+        !currencyDisplay(options.mCurrency->second)) {
+      return;
+    }
+  } else if (options.mUnit.isSome()) {
+    if (!unit(options.mUnit->first) || !unitDisplay(options.mUnit->second)) {
+      return;
+    }
+  } else if (options.mPercent) {
+    if (!percent()) {
+      return;
+    }
+  }
+
+  if (options.mRoundingIncrement != 1) {
+    auto fd = options.mFractionDigits.valueOr(std::pair{0, 0});
+    if (!roundingIncrement(options.mRoundingIncrement, fd.first, fd.second,
+                           options.mStripTrailingZero)) {
+      return;
+    }
+  } else if (options.mRoundingPriority ==
+             NumberFormatOptions::RoundingPriority::Auto) {
+    if (options.mFractionDigits.isSome()) {
+      if (!fractionDigits(options.mFractionDigits->first,
+                          options.mFractionDigits->second,
+                          options.mStripTrailingZero)) {
+        return;
+      }
+    }
+
+    if (options.mSignificantDigits.isSome()) {
+      if (!significantDigits(options.mSignificantDigits->first,
+                             options.mSignificantDigits->second,
+                             options.mStripTrailingZero)) {
+        return;
+      }
+    }
+  } else {
+    MOZ_ASSERT(options.mFractionDigits);
+    MOZ_ASSERT(options.mSignificantDigits);
+
+    bool relaxed = options.mRoundingPriority ==
+                   NumberFormatOptions::RoundingPriority::MorePrecision;
+    if (!fractionWithSignificantDigits(options.mFractionDigits->first,
+                                       options.mFractionDigits->second,
+                                       options.mSignificantDigits->first,
+                                       options.mSignificantDigits->second,
+                                       relaxed, options.mStripTrailingZero)) {
+      return;
+    }
+  }
+
+  if (options.mMinIntegerDigits.isSome()) {
+    if (!minIntegerDigits(*options.mMinIntegerDigits)) {
+      return;
+    }
+  }
+
+  if (!grouping(options.mGrouping)) {
+    return;
+  }
+
+  if (!notation(options.mNotation)) {
+    return;
+  }
+
+  if (!signDisplay(options.mSignDisplay)) {
+    return;
+  }
+
+  if (!roundingMode(options.mRoundingMode)) {
+    return;
+  }
+
+  mValidSkeleton = true;
+}
+
+bool NumberFormatterSkeleton::currency(std::string_view currency) {
+  MOZ_ASSERT(currency.size() == 3,
+             "IsWellFormedCurrencyCode permits only length-3 strings");
+
+  char16_t currencyChars[] = {static_cast<char16_t>(currency[0]),
+                              static_cast<char16_t>(currency[1]),
+                              static_cast<char16_t>(currency[2]), '\0'};
+  return append(u"currency/") && append(currencyChars) && append(' ');
+}
+
+bool NumberFormatterSkeleton::currencyDisplay(
+    NumberFormatOptions::CurrencyDisplay display) {
+  switch (display) {
+    case NumberFormatOptions::CurrencyDisplay::Code:
+      return appendToken(u"unit-width-iso-code");
+    case NumberFormatOptions::CurrencyDisplay::Name:
+      return appendToken(u"unit-width-full-name");
+    case NumberFormatOptions::CurrencyDisplay::Symbol:
+      // Default, no additional tokens needed.
+      return true;
+    case NumberFormatOptions::CurrencyDisplay::NarrowSymbol:
+      return appendToken(u"unit-width-narrow");
+  }
+  MOZ_ASSERT_UNREACHABLE("unexpected currency display type");
+  return false;
+}
+
+static const SimpleMeasureUnit& FindSimpleMeasureUnit(std::string_view name) {
+  const auto* measureUnit = std::lower_bound(
+      std::begin(simpleMeasureUnits), std::end(simpleMeasureUnits), name,
+      [](const auto& measureUnit, std::string_view name) {
+        return name.compare(measureUnit.name) > 0;
+      });
+  MOZ_ASSERT(measureUnit != std::end(simpleMeasureUnits),
+             "unexpected unit identifier: unit not found");
+  MOZ_ASSERT(measureUnit->name == name,
+             "unexpected unit identifier: wrong unit found");
+  return *measureUnit;
+}
+
+static constexpr size_t MaxUnitLength() {
+  size_t length = 0;
+  for (const auto& unit : simpleMeasureUnits) {
+    length = std::max(length, std::char_traits<char>::length(unit.name));
+  }
+  return length * 2 + std::char_traits<char>::length("-per-");
+}
+
+bool NumberFormatterSkeleton::unit(std::string_view unit) {
+  MOZ_RELEASE_ASSERT(unit.length() <= MaxUnitLength());
+
+  auto appendUnit = [this](const SimpleMeasureUnit& unit) {
+    return append(unit.type, strlen(unit.type)) && append('-') &&
+           append(unit.name, strlen(unit.name));
+  };
+
+  // |unit| can be a compound unit identifier, separated by "-per-".
+  static constexpr char separator[] = "-per-";
+  size_t separator_len = strlen(separator);
+  size_t offset = unit.find(separator);
+  if (offset != std::string_view::npos) {
+    const auto& numerator = FindSimpleMeasureUnit(unit.substr(0, offset));
+    const auto& denominator = FindSimpleMeasureUnit(
+        std::string_view(unit.data() + offset + separator_len,
+                         unit.length() - offset - separator_len));
+    return append(u"measure-unit/") && appendUnit(numerator) && append(' ') &&
+           append(u"per-measure-unit/") && appendUnit(denominator) &&
+           append(' ');
+  }
+
+  const auto& simple = FindSimpleMeasureUnit(unit);
+  return append(u"measure-unit/") && appendUnit(simple) && append(' ');
+}
+
+bool NumberFormatterSkeleton::unitDisplay(
+    NumberFormatOptions::UnitDisplay display) {
+  switch (display) {
+    case NumberFormatOptions::UnitDisplay::Short:
+      return appendToken(u"unit-width-short");
+    case NumberFormatOptions::UnitDisplay::Narrow:
+      return appendToken(u"unit-width-narrow");
+    case NumberFormatOptions::UnitDisplay::Long:
+      return appendToken(u"unit-width-full-name");
+  }
+  MOZ_ASSERT_UNREACHABLE("unexpected unit display type");
+  return false;
+}
+
+bool NumberFormatterSkeleton::percent() {
+  return appendToken(u"percent scale/100");
+}
+
+bool NumberFormatterSkeleton::fractionDigits(uint32_t min, uint32_t max,
+                                             bool stripTrailingZero) {
+  // Note: |min| can be zero here.
+  MOZ_ASSERT(min <= max);
+  if (!append('.') || !appendN('0', min) || !appendN('#', max - min)) {
+    return false;
+  }
+  if (stripTrailingZero) {
+    if (!append(u"/w")) {
+      return false;
+    }
+  }
+  return append(' ');
+}
+
+bool NumberFormatterSkeleton::fractionWithSignificantDigits(
+    uint32_t mnfd, uint32_t mxfd, uint32_t mnsd, uint32_t mxsd, bool relaxed,
+    bool stripTrailingZero) {
+  // Note: |mnfd| can be zero here.
+  MOZ_ASSERT(mnfd <= mxfd);
+  MOZ_ASSERT(mnsd > 0);
+  MOZ_ASSERT(mnsd <= mxsd);
+
+  if (!append('.') || !appendN('0', mnfd) || !appendN('#', mxfd - mnfd)) {
+    return false;
+  }
+  if (!append('/') || !appendN('@', mnsd) || !appendN('#', mxsd - mnsd)) {
+    return false;
+  }
+  if (!append(relaxed ? 'r' : 's')) {
+    return false;
+  }
+  if (stripTrailingZero) {
+    if (!append(u"/w")) {
+      return false;
+    }
+  }
+  return append(' ');
+}
+
+bool NumberFormatterSkeleton::minIntegerDigits(uint32_t min) {
+  MOZ_ASSERT(min > 0);
+  return append(u"integer-width/+") && appendN('0', min) && append(' ');
+}
+
+bool NumberFormatterSkeleton::significantDigits(uint32_t min, uint32_t max,
+                                                bool stripTrailingZero) {
+  MOZ_ASSERT(min > 0);
+  MOZ_ASSERT(min <= max);
+  if (!appendN('@', min) || !appendN('#', max - min)) {
+    return false;
+  }
+  if (stripTrailingZero) {
+    if (!append(u"/w")) {
+      return false;
+    }
+  }
+  return append(' ');
+}
+
+bool NumberFormatterSkeleton::grouping(NumberFormatOptions::Grouping grouping) {
+  switch (grouping) {
+    case NumberFormatOptions::Grouping::Auto:
+      // Default, no additional tokens needed.
+      return true;
+    case NumberFormatOptions::Grouping::Always:
+      return appendToken(u"group-on-aligned");
+    case NumberFormatOptions::Grouping::Min2:
+      return appendToken(u"group-min2");
+    case NumberFormatOptions::Grouping::Never:
+      return appendToken(u"group-off");
+  }
+  MOZ_ASSERT_UNREACHABLE("unexpected grouping mode");
+  return false;
+}
+
+bool NumberFormatterSkeleton::notation(NumberFormatOptions::Notation style) {
+  switch (style) {
+    case NumberFormatOptions::Notation::Standard:
+      // Default, no additional tokens needed.
+      return true;
+    case NumberFormatOptions::Notation::Scientific:
+      return appendToken(u"scientific");
+    case NumberFormatOptions::Notation::Engineering:
+      return appendToken(u"engineering");
+    case NumberFormatOptions::Notation::CompactShort:
+      return appendToken(u"compact-short");
+    case NumberFormatOptions::Notation::CompactLong:
+      return appendToken(u"compact-long");
+  }
+  MOZ_ASSERT_UNREACHABLE("unexpected notation style");
+  return false;
+}
+
+bool NumberFormatterSkeleton::signDisplay(
+    NumberFormatOptions::SignDisplay display) {
+  switch (display) {
+    case NumberFormatOptions::SignDisplay::Auto:
+      // Default, no additional tokens needed.
+      return true;
+    case NumberFormatOptions::SignDisplay::Always:
+      return appendToken(u"sign-always");
+    case NumberFormatOptions::SignDisplay::Never:
+      return appendToken(u"sign-never");
+    case NumberFormatOptions::SignDisplay::ExceptZero:
+      return appendToken(u"sign-except-zero");
+    case NumberFormatOptions::SignDisplay::Negative:
+      return appendToken(u"sign-negative");
+    case NumberFormatOptions::SignDisplay::Accounting:
+      return appendToken(u"sign-accounting");
+    case NumberFormatOptions::SignDisplay::AccountingAlways:
+      return appendToken(u"sign-accounting-always");
+    case NumberFormatOptions::SignDisplay::AccountingExceptZero:
+      return appendToken(u"sign-accounting-except-zero");
+    case NumberFormatOptions::SignDisplay::AccountingNegative:
+      return appendToken(u"sign-accounting-negative");
+  }
+  MOZ_ASSERT_UNREACHABLE("unexpected sign display type");
+  return false;
+}
+
+bool NumberFormatterSkeleton::roundingIncrement(uint32_t increment,
+                                                uint32_t mnfd, uint32_t mxfd,
+                                                bool stripTrailingZero) {
+  // Note: |mnfd| can be zero here.
+  MOZ_ASSERT(mnfd <= mxfd);
+  MOZ_ASSERT(increment > 1);
+
+  // Limit |mxfd| to 100. (20 is the current limit for ECMA-402, but there are
+  // plans to change it to 100.)
+  constexpr size_t maxFracDigits = 100;
+  MOZ_RELEASE_ASSERT(mxfd <= maxFracDigits);
+
+  static constexpr char digits[] = "0123456789";
+
+  // We need enough space to print any uint32_t, which is possibly shifted by
+  // |mxfd| decimal places. And additionally we need to reserve space for "0.".
+  static_assert(std::numeric_limits<uint32_t>::digits10 + 1 < maxFracDigits);
+  constexpr size_t maxLength = maxFracDigits + 2;
+
+  char chars[maxLength];
+  RangedPtr<char> ptr(chars + maxLength, chars, maxLength);
+  const RangedPtr<char> end = ptr;
+
+  // Convert to a signed integer, so we don't have to worry about underflows.
+  int32_t maxFrac = int32_t(mxfd);
+
+  // Write |increment| from back to front.
+  while (increment != 0) {
+    *--ptr = digits[increment % 10];
+    increment /= 10;
+    maxFrac -= 1;
+
+    if (maxFrac == 0) {
+      *--ptr = '.';
+    }
+  }
+
+  // Write any remaining zeros from |mxfd| and prepend '0' if we last wrote the
+  // decimal point.
+  while (maxFrac >= 0) {
+    MOZ_ASSERT_IF(maxFrac == 0, *ptr == '.');
+
+    *--ptr = '0';
+    maxFrac -= 1;
+
+    if (maxFrac == 0) {
+      *--ptr = '.';
+    }
+  }
+
+  MOZ_ASSERT(ptr < end, "At least one character is written.");
+  MOZ_ASSERT(*ptr != '.', "First character is a digit.");
+
+  if (!append(u"precision-increment/") || !append(ptr.get(), end - ptr)) {
+    return false;
+  }
+  if (stripTrailingZero) {
+    if (!append(u"/w")) {
+      return false;
+    }
+  }
+  return append(' ');
+}
+
+bool NumberFormatterSkeleton::roundingMode(
+    NumberFormatOptions::RoundingMode rounding) {
+  switch (rounding) {
+    case NumberFormatOptions::RoundingMode::Ceil:
+      return appendToken(u"rounding-mode-ceiling");
+    case NumberFormatOptions::RoundingMode::Floor:
+      return appendToken(u"rounding-mode-floor");
+    case NumberFormatOptions::RoundingMode::Expand:
+      return appendToken(u"rounding-mode-up");
+    case NumberFormatOptions::RoundingMode::Trunc:
+      return appendToken(u"rounding-mode-down");
+    case NumberFormatOptions::RoundingMode::HalfCeil:
+      return appendToken(u"rounding-mode-half-ceiling");
+    case NumberFormatOptions::RoundingMode::HalfFloor:
+      return appendToken(u"rounding-mode-half-floor");
+    case NumberFormatOptions::RoundingMode::HalfExpand:
+      return appendToken(u"rounding-mode-half-up");
+    case NumberFormatOptions::RoundingMode::HalfTrunc:
+      return appendToken(u"rounding-mode-half-down");
+    case NumberFormatOptions::RoundingMode::HalfEven:
+      return appendToken(u"rounding-mode-half-even");
+    case NumberFormatOptions::RoundingMode::HalfOdd:
+      return appendToken(u"rounding-mode-half-odd");
+  }
+  MOZ_ASSERT_UNREACHABLE("unexpected rounding mode");
+  return false;
+}
+
+UNumberFormatter* NumberFormatterSkeleton::toFormatter(
+    std::string_view locale) {
+  if (!mValidSkeleton) {
+    return nullptr;
+  }
+
+  UErrorCode status = U_ZERO_ERROR;
+  UNumberFormatter* nf = unumf_openForSkeletonAndLocale(
+      mVector.begin(), mVector.length(), AssertNullTerminatedString(locale),
+      &status);
+  if (U_FAILURE(status)) {
+    return nullptr;
+  }
+  return nf;
+}
+
+static UNumberRangeCollapse ToUNumberRangeCollapse(
+    NumberRangeFormatOptions::RangeCollapse collapse) {
+  using RangeCollapse = NumberRangeFormatOptions::RangeCollapse;
+  switch (collapse) {
+    case RangeCollapse::Auto:
+      return UNUM_RANGE_COLLAPSE_AUTO;
+    case RangeCollapse::None:
+      return UNUM_RANGE_COLLAPSE_NONE;
+    case RangeCollapse::Unit:
+      return UNUM_RANGE_COLLAPSE_UNIT;
+    case RangeCollapse::All:
+      return UNUM_RANGE_COLLAPSE_ALL;
+  }
+  MOZ_ASSERT_UNREACHABLE("unexpected range collapse");
+  return UNUM_RANGE_COLLAPSE_NONE;
+}
+
+static UNumberRangeIdentityFallback ToUNumberRangeIdentityFallback(
+    NumberRangeFormatOptions::RangeIdentityFallback identity) {
+  using RangeIdentityFallback = NumberRangeFormatOptions::RangeIdentityFallback;
+  switch (identity) {
+    case RangeIdentityFallback::SingleValue:
+      return UNUM_IDENTITY_FALLBACK_SINGLE_VALUE;
+    case RangeIdentityFallback::ApproximatelyOrSingleValue:
+      return UNUM_IDENTITY_FALLBACK_APPROXIMATELY_OR_SINGLE_VALUE;
+    case RangeIdentityFallback::Approximately:
+      return UNUM_IDENTITY_FALLBACK_APPROXIMATELY;
+    case RangeIdentityFallback::Range:
+      return UNUM_IDENTITY_FALLBACK_RANGE;
+  }
+  MOZ_ASSERT_UNREACHABLE("unexpected range identity fallback");
+  return UNUM_IDENTITY_FALLBACK_RANGE;
+}
+
+UNumberRangeFormatter* NumberFormatterSkeleton::toRangeFormatter(
+    std::string_view locale, NumberRangeFormatOptions::RangeCollapse collapse,
+    NumberRangeFormatOptions::RangeIdentityFallback identity) {
+  if (!mValidSkeleton) {
+    return nullptr;
+  }
+
+  UParseError* perror = nullptr;
+  UErrorCode status = U_ZERO_ERROR;
+  UNumberRangeFormatter* nrf =
+      unumrf_openForSkeletonWithCollapseAndIdentityFallback(
+          mVector.begin(), mVector.length(), ToUNumberRangeCollapse(collapse),
+          ToUNumberRangeIdentityFallback(identity),
+          AssertNullTerminatedString(locale), perror, &status);
+  if (U_FAILURE(status)) {
+    return nullptr;
+  }
+  return nrf;
+}
+
+}  // namespace mozilla::intl