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// © 2018 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING
// Allow implicit conversion from char16_t* to UnicodeString for this file:
// Helpful in toString methods and elsewhere.
#define UNISTR_FROM_STRING_EXPLICIT
#include "numparse_types.h"
#include "numparse_compositions.h"
#include "string_segment.h"
#include "unicode/uniset.h"
using namespace icu;
using namespace icu::numparse;
using namespace icu::numparse::impl;
bool SeriesMatcher::match(StringSegment& segment, ParsedNumber& result, UErrorCode& status) const {
ParsedNumber backup(result);
int32_t initialOffset = segment.getOffset();
bool maybeMore = true;
for (const auto* it = begin(); it < end();) {
const NumberParseMatcher* matcher = *it;
int matcherOffset = segment.getOffset();
if (segment.length() != 0) {
maybeMore = matcher->match(segment, result, status);
} else {
// Nothing for this matcher to match; ask for more.
maybeMore = true;
}
bool success = (segment.getOffset() != matcherOffset);
bool isFlexible = matcher->isFlexible();
if (success && isFlexible) {
// Match succeeded, and this is a flexible matcher. Re-run it.
} else if (success) {
// Match succeeded, and this is NOT a flexible matcher. Proceed to the next matcher.
it++;
// Small hack: if there is another matcher coming, do not accept trailing weak chars.
// Needed for proper handling of currency spacing.
if (it < end() && segment.getOffset() != result.charEnd && result.charEnd > matcherOffset) {
segment.setOffset(result.charEnd);
}
} else if (isFlexible) {
// Match failed, and this is a flexible matcher. Try again with the next matcher.
it++;
} else {
// Match failed, and this is NOT a flexible matcher. Exit.
segment.setOffset(initialOffset);
result = backup;
return maybeMore;
}
}
// All matchers in the series succeeded.
return maybeMore;
}
bool SeriesMatcher::smokeTest(const StringSegment& segment) const {
// NOTE: The range-based for loop calls the virtual begin() and end() methods.
// NOTE: We only want the first element. Use the for loop for boundary checking.
for (const auto& matcher : *this) {
// SeriesMatchers are never allowed to start with a Flexible matcher.
U_ASSERT(!matcher->isFlexible());
return matcher->smokeTest(segment);
}
return false;
}
void SeriesMatcher::postProcess(ParsedNumber& result) const {
// NOTE: The range-based for loop calls the virtual begin() and end() methods.
for (const auto* matcher : *this) {
matcher->postProcess(result);
}
}
ArraySeriesMatcher::ArraySeriesMatcher()
: fMatchersLen(0) {
}
ArraySeriesMatcher::ArraySeriesMatcher(MatcherArray& matchers, int32_t matchersLen)
: fMatchers(std::move(matchers)), fMatchersLen(matchersLen) {
}
int32_t ArraySeriesMatcher::length() const {
return fMatchersLen;
}
const NumberParseMatcher* const* ArraySeriesMatcher::begin() const {
return fMatchers.getAlias();
}
const NumberParseMatcher* const* ArraySeriesMatcher::end() const {
return fMatchers.getAlias() + fMatchersLen;
}
UnicodeString ArraySeriesMatcher::toString() const {
return u"<ArraySeries>";
}
#endif /* #if !UCONFIG_NO_FORMATTING */
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