301 lines
12 KiB
C++
301 lines
12 KiB
C++
// © 2017 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING
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#include "cstring.h"
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#include "number_patternmodifier.h"
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#include "unicode/dcfmtsym.h"
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#include "unicode/ucurr.h"
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#include "unicode/unistr.h"
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#include "number_microprops.h"
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using namespace icu;
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using namespace icu::number;
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using namespace icu::number::impl;
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AffixPatternProvider::~AffixPatternProvider() = default;
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MutablePatternModifier::MutablePatternModifier(bool isStrong)
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: fStrong(isStrong) {}
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void MutablePatternModifier::setPatternInfo(const AffixPatternProvider* patternInfo) {
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this->patternInfo = patternInfo;
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}
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void MutablePatternModifier::setPatternAttributes(UNumberSignDisplay signDisplay, bool perMille) {
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this->signDisplay = signDisplay;
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this->perMilleReplacesPercent = perMille;
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}
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void MutablePatternModifier::setSymbols(const DecimalFormatSymbols* symbols,
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const CurrencySymbols* currencySymbols,
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const UNumberUnitWidth unitWidth, const PluralRules* rules) {
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U_ASSERT((rules != nullptr) == needsPlurals());
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this->symbols = symbols;
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this->currencySymbols = currencySymbols;
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this->unitWidth = unitWidth;
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this->rules = rules;
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}
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void MutablePatternModifier::setNumberProperties(int8_t signum, StandardPlural::Form plural) {
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this->signum = signum;
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this->plural = plural;
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}
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bool MutablePatternModifier::needsPlurals() const {
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UErrorCode statusLocal = U_ZERO_ERROR;
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return patternInfo->containsSymbolType(AffixPatternType::TYPE_CURRENCY_TRIPLE, statusLocal);
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// Silently ignore any error codes.
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}
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ImmutablePatternModifier* MutablePatternModifier::createImmutable(UErrorCode& status) {
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return createImmutableAndChain(nullptr, status);
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}
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ImmutablePatternModifier*
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MutablePatternModifier::createImmutableAndChain(const MicroPropsGenerator* parent, UErrorCode& status) {
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// TODO: Move StandardPlural VALUES to standardplural.h
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static const StandardPlural::Form STANDARD_PLURAL_VALUES[] = {
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StandardPlural::Form::ZERO,
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StandardPlural::Form::ONE,
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StandardPlural::Form::TWO,
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StandardPlural::Form::FEW,
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StandardPlural::Form::MANY,
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StandardPlural::Form::OTHER};
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auto pm = new ParameterizedModifier();
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if (pm == nullptr) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return nullptr;
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}
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if (needsPlurals()) {
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// Slower path when we require the plural keyword.
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for (StandardPlural::Form plural : STANDARD_PLURAL_VALUES) {
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setNumberProperties(1, plural);
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pm->adoptSignPluralModifier(1, plural, createConstantModifier(status));
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setNumberProperties(0, plural);
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pm->adoptSignPluralModifier(0, plural, createConstantModifier(status));
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setNumberProperties(-1, plural);
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pm->adoptSignPluralModifier(-1, plural, createConstantModifier(status));
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}
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if (U_FAILURE(status)) {
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delete pm;
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return nullptr;
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}
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return new ImmutablePatternModifier(pm, rules, parent); // adopts pm
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} else {
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// Faster path when plural keyword is not needed.
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setNumberProperties(1, StandardPlural::Form::COUNT);
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Modifier* positive = createConstantModifier(status);
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setNumberProperties(0, StandardPlural::Form::COUNT);
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Modifier* zero = createConstantModifier(status);
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setNumberProperties(-1, StandardPlural::Form::COUNT);
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Modifier* negative = createConstantModifier(status);
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pm->adoptPositiveNegativeModifiers(positive, zero, negative);
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if (U_FAILURE(status)) {
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delete pm;
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return nullptr;
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}
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return new ImmutablePatternModifier(pm, nullptr, parent); // adopts pm
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}
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}
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ConstantMultiFieldModifier* MutablePatternModifier::createConstantModifier(UErrorCode& status) {
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NumberStringBuilder a;
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NumberStringBuilder b;
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insertPrefix(a, 0, status);
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insertSuffix(b, 0, status);
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if (patternInfo->hasCurrencySign()) {
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return new CurrencySpacingEnabledModifier(
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a, b, !patternInfo->hasBody(), fStrong, *symbols, status);
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} else {
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return new ConstantMultiFieldModifier(a, b, !patternInfo->hasBody(), fStrong);
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}
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}
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ImmutablePatternModifier::ImmutablePatternModifier(ParameterizedModifier* pm, const PluralRules* rules,
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const MicroPropsGenerator* parent)
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: pm(pm), rules(rules), parent(parent) {}
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void ImmutablePatternModifier::processQuantity(DecimalQuantity& quantity, MicroProps& micros,
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UErrorCode& status) const {
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parent->processQuantity(quantity, micros, status);
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applyToMicros(micros, quantity);
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}
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void ImmutablePatternModifier::applyToMicros(MicroProps& micros, DecimalQuantity& quantity) const {
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if (rules == nullptr) {
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micros.modMiddle = pm->getModifier(quantity.signum());
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} else {
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// TODO: Fix this. Avoid the copy.
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DecimalQuantity copy(quantity);
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copy.roundToInfinity();
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StandardPlural::Form plural = utils::getStandardPlural(rules, copy);
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micros.modMiddle = pm->getModifier(quantity.signum(), plural);
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}
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}
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const Modifier* ImmutablePatternModifier::getModifier(int8_t signum, StandardPlural::Form plural) const {
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if (rules == nullptr) {
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return pm->getModifier(signum);
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} else {
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return pm->getModifier(signum, plural);
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}
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}
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/** Used by the unsafe code path. */
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MicroPropsGenerator& MutablePatternModifier::addToChain(const MicroPropsGenerator* parent) {
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this->parent = parent;
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return *this;
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}
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void MutablePatternModifier::processQuantity(DecimalQuantity& fq, MicroProps& micros,
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UErrorCode& status) const {
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parent->processQuantity(fq, micros, status);
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// The unsafe code path performs self-mutation, so we need a const_cast.
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// This method needs to be const because it overrides a const method in the parent class.
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auto nonConstThis = const_cast<MutablePatternModifier*>(this);
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if (needsPlurals()) {
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// TODO: Fix this. Avoid the copy.
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DecimalQuantity copy(fq);
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micros.rounder.apply(copy, status);
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nonConstThis->setNumberProperties(fq.signum(), utils::getStandardPlural(rules, copy));
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} else {
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nonConstThis->setNumberProperties(fq.signum(), StandardPlural::Form::COUNT);
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}
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micros.modMiddle = this;
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}
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int32_t MutablePatternModifier::apply(NumberStringBuilder& output, int32_t leftIndex, int32_t rightIndex,
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UErrorCode& status) const {
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// The unsafe code path performs self-mutation, so we need a const_cast.
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// This method needs to be const because it overrides a const method in the parent class.
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auto nonConstThis = const_cast<MutablePatternModifier*>(this);
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int32_t prefixLen = nonConstThis->insertPrefix(output, leftIndex, status);
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int32_t suffixLen = nonConstThis->insertSuffix(output, rightIndex + prefixLen, status);
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// If the pattern had no decimal stem body (like #,##0.00), overwrite the value.
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int32_t overwriteLen = 0;
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if (!patternInfo->hasBody()) {
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overwriteLen = output.splice(
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leftIndex + prefixLen,
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rightIndex + prefixLen,
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UnicodeString(),
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0,
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0,
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UNUM_FIELD_COUNT,
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status);
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}
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CurrencySpacingEnabledModifier::applyCurrencySpacing(
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output,
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leftIndex,
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prefixLen,
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rightIndex + overwriteLen + prefixLen,
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suffixLen,
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*symbols,
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status);
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return prefixLen + overwriteLen + suffixLen;
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}
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int32_t MutablePatternModifier::getPrefixLength(UErrorCode& status) const {
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// The unsafe code path performs self-mutation, so we need a const_cast.
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// This method needs to be const because it overrides a const method in the parent class.
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auto nonConstThis = const_cast<MutablePatternModifier*>(this);
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// Enter and exit CharSequence Mode to get the length.
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nonConstThis->prepareAffix(true);
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int result = AffixUtils::unescapedCodePointCount(currentAffix, *this, status); // prefix length
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return result;
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}
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int32_t MutablePatternModifier::getCodePointCount(UErrorCode& status) const {
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// The unsafe code path performs self-mutation, so we need a const_cast.
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// This method needs to be const because it overrides a const method in the parent class.
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auto nonConstThis = const_cast<MutablePatternModifier*>(this);
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// Render the affixes to get the length
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nonConstThis->prepareAffix(true);
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int result = AffixUtils::unescapedCodePointCount(currentAffix, *this, status); // prefix length
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nonConstThis->prepareAffix(false);
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result += AffixUtils::unescapedCodePointCount(currentAffix, *this, status); // suffix length
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return result;
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}
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bool MutablePatternModifier::isStrong() const {
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return fStrong;
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}
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int32_t MutablePatternModifier::insertPrefix(NumberStringBuilder& sb, int position, UErrorCode& status) {
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prepareAffix(true);
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int length = AffixUtils::unescape(currentAffix, sb, position, *this, status);
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return length;
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}
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int32_t MutablePatternModifier::insertSuffix(NumberStringBuilder& sb, int position, UErrorCode& status) {
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prepareAffix(false);
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int length = AffixUtils::unescape(currentAffix, sb, position, *this, status);
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return length;
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}
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/** This method contains the heart of the logic for rendering LDML affix strings. */
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void MutablePatternModifier::prepareAffix(bool isPrefix) {
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PatternStringUtils::patternInfoToStringBuilder(
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*patternInfo, isPrefix, signum, signDisplay, plural, perMilleReplacesPercent, currentAffix);
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}
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UnicodeString MutablePatternModifier::getSymbol(AffixPatternType type) const {
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UErrorCode localStatus = U_ZERO_ERROR;
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switch (type) {
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case AffixPatternType::TYPE_MINUS_SIGN:
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return symbols->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kMinusSignSymbol);
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case AffixPatternType::TYPE_PLUS_SIGN:
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return symbols->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kPlusSignSymbol);
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case AffixPatternType::TYPE_PERCENT:
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return symbols->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kPercentSymbol);
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case AffixPatternType::TYPE_PERMILLE:
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return symbols->getSymbol(DecimalFormatSymbols::ENumberFormatSymbol::kPerMillSymbol);
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case AffixPatternType::TYPE_CURRENCY_SINGLE: {
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// UnitWidth ISO and HIDDEN overrides the singular currency symbol.
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if (unitWidth == UNumberUnitWidth::UNUM_UNIT_WIDTH_ISO_CODE) {
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return currencySymbols->getIntlCurrencySymbol(localStatus);
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} else if (unitWidth == UNumberUnitWidth::UNUM_UNIT_WIDTH_HIDDEN) {
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return UnicodeString();
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} else if (unitWidth == UNumberUnitWidth::UNUM_UNIT_WIDTH_NARROW) {
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return currencySymbols->getNarrowCurrencySymbol(localStatus);
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} else {
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return currencySymbols->getCurrencySymbol(localStatus);
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}
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}
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case AffixPatternType::TYPE_CURRENCY_DOUBLE:
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return currencySymbols->getIntlCurrencySymbol(localStatus);
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case AffixPatternType::TYPE_CURRENCY_TRIPLE:
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// NOTE: This is the code path only for patterns containing "¤¤¤".
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// Plural currencies set via the API are formatted in LongNameHandler.
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// This code path is used by DecimalFormat via CurrencyPluralInfo.
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U_ASSERT(plural != StandardPlural::Form::COUNT);
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return currencySymbols->getPluralName(plural, localStatus);
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case AffixPatternType::TYPE_CURRENCY_QUAD:
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return UnicodeString(u"\uFFFD");
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case AffixPatternType::TYPE_CURRENCY_QUINT:
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return UnicodeString(u"\uFFFD");
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default:
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U_ASSERT(false);
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return UnicodeString();
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}
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}
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UnicodeString MutablePatternModifier::toUnicodeString() const {
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// Never called by AffixUtils
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U_ASSERT(false);
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return UnicodeString();
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}
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#endif /* #if !UCONFIG_NO_FORMATTING */
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