80 lines
1.8 KiB
C++
80 lines
1.8 KiB
C++
// © 2018 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 && !UPRV_INCOMPLETE_CPP11_SUPPORT
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#include "numparse_types.h"
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#include "numparse_stringsegment.h"
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#include "putilimp.h"
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#include "unicode/utf16.h"
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using namespace icu;
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using namespace icu::numparse;
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using namespace icu::numparse::impl;
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StringSegment::StringSegment(const UnicodeString &str) : fStr(str), fStart(0), fEnd(str.length()) {}
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int32_t StringSegment::getOffset() const {
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return fStart;
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}
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void StringSegment::setOffset(int32_t start) {
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fStart = start;
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}
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void StringSegment::adjustOffset(int32_t delta) {
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fStart += delta;
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}
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void StringSegment::setLength(int32_t length) {
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fEnd = fStart + length;
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}
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void StringSegment::resetLength() {
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fEnd = fStr.length();
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}
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int32_t StringSegment::length() const {
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return fEnd - fStart;
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}
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char16_t StringSegment::charAt(int32_t index) const {
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return fStr.charAt(index + fStart);
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}
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UChar32 StringSegment::codePointAt(int32_t index) const {
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return fStr.char32At(index + fStart);
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}
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UnicodeString StringSegment::toUnicodeString() const {
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return UnicodeString(fStr, fStart, fEnd - fStart);
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}
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UChar32 StringSegment::getCodePoint() const {
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char16_t lead = fStr.charAt(fStart);
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if (U16_IS_LEAD(lead) && fStart + 1 < fEnd) {
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return fStr.char32At(fStart);
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} else if (U16_IS_SURROGATE(lead)) {
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return -1;
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} else {
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return lead;
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}
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}
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int32_t StringSegment::getCommonPrefixLength(const UnicodeString &other) {
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int32_t offset = 0;
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for (; offset < uprv_min(length(), other.length());) {
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if (charAt(offset) != other.charAt(offset)) {
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break;
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}
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offset++;
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}
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return offset;
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}
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#endif /* #if !UCONFIG_NO_FORMATTING */
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