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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_symbols.h"
#include "numparse_utils.h"
#include "string_segment.h"
using namespace icu;
using namespace icu::numparse;
using namespace icu::numparse::impl;
SymbolMatcher::SymbolMatcher(const UnicodeString& symbolString, unisets::Key key) {
fUniSet = unisets::get(key);
if (fUniSet->contains(symbolString)) {
fString.setToBogus();
} else {
fString = symbolString;
}
}
const UnicodeSet* SymbolMatcher::getSet() const {
return fUniSet;
}
bool SymbolMatcher::match(StringSegment& segment, ParsedNumber& result, UErrorCode&) const {
// Smoke test first; this matcher might be disabled.
if (isDisabled(result)) {
return false;
}
// Test the string first in order to consume trailing chars greedily.
int overlap = 0;
if (!fString.isEmpty()) {
overlap = segment.getCommonPrefixLength(fString);
if (overlap == fString.length()) {
segment.adjustOffset(fString.length());
accept(segment, result);
return false;
}
}
int cp = segment.getCodePoint();
if (cp != -1 && fUniSet->contains(cp)) {
segment.adjustOffset(U16_LENGTH(cp));
accept(segment, result);
return false;
}
return overlap == segment.length();
}
bool SymbolMatcher::smokeTest(const StringSegment& segment) const {
return segment.startsWith(*fUniSet) || segment.startsWith(fString);
}
UnicodeString SymbolMatcher::toString() const {
// TODO: Customize output for each symbol
return u"<Symbol>";
}
IgnorablesMatcher::IgnorablesMatcher(parse_flags_t parseFlags) :
SymbolMatcher(
{},
(0 != (parseFlags & PARSE_FLAG_STRICT_IGNORABLES)) ?
unisets::STRICT_IGNORABLES :
unisets::DEFAULT_IGNORABLES) {
}
bool IgnorablesMatcher::isFlexible() const {
return true;
}
UnicodeString IgnorablesMatcher::toString() const {
return u"<Ignorables>";
}
bool IgnorablesMatcher::isDisabled(const ParsedNumber&) const {
return false;
}
void IgnorablesMatcher::accept(StringSegment&, ParsedNumber&) const {
// No-op
}
InfinityMatcher::InfinityMatcher(const DecimalFormatSymbols& dfs)
: SymbolMatcher(dfs.getConstSymbol(DecimalFormatSymbols::kInfinitySymbol), unisets::INFINITY_SIGN) {
}
bool InfinityMatcher::isDisabled(const ParsedNumber& result) const {
return 0 != (result.flags & FLAG_INFINITY);
}
void InfinityMatcher::accept(StringSegment& segment, ParsedNumber& result) const {
result.flags |= FLAG_INFINITY;
result.setCharsConsumed(segment);
}
MinusSignMatcher::MinusSignMatcher(const DecimalFormatSymbols& dfs, bool allowTrailing)
: SymbolMatcher(dfs.getConstSymbol(DecimalFormatSymbols::kMinusSignSymbol), unisets::MINUS_SIGN),
fAllowTrailing(allowTrailing) {
}
bool MinusSignMatcher::isDisabled(const ParsedNumber& result) const {
return !fAllowTrailing && result.seenNumber();
}
void MinusSignMatcher::accept(StringSegment& segment, ParsedNumber& result) const {
result.flags |= FLAG_NEGATIVE;
result.setCharsConsumed(segment);
}
NanMatcher::NanMatcher(const DecimalFormatSymbols& dfs)
: SymbolMatcher(dfs.getConstSymbol(DecimalFormatSymbols::kNaNSymbol), unisets::EMPTY) {
}
bool NanMatcher::isDisabled(const ParsedNumber& result) const {
return result.seenNumber();
}
void NanMatcher::accept(StringSegment& segment, ParsedNumber& result) const {
result.flags |= FLAG_NAN;
result.setCharsConsumed(segment);
}
PaddingMatcher::PaddingMatcher(const UnicodeString& padString)
: SymbolMatcher(padString, unisets::EMPTY) {}
bool PaddingMatcher::isFlexible() const {
return true;
}
bool PaddingMatcher::isDisabled(const ParsedNumber&) const {
return false;
}
void PaddingMatcher::accept(StringSegment&, ParsedNumber&) const {
// No-op
}
PercentMatcher::PercentMatcher(const DecimalFormatSymbols& dfs)
: SymbolMatcher(dfs.getConstSymbol(DecimalFormatSymbols::kPercentSymbol), unisets::PERCENT_SIGN) {
}
bool PercentMatcher::isDisabled(const ParsedNumber& result) const {
return 0 != (result.flags & FLAG_PERCENT);
}
void PercentMatcher::accept(StringSegment& segment, ParsedNumber& result) const {
result.flags |= FLAG_PERCENT;
result.setCharsConsumed(segment);
}
PermilleMatcher::PermilleMatcher(const DecimalFormatSymbols& dfs)
: SymbolMatcher(dfs.getConstSymbol(DecimalFormatSymbols::kPerMillSymbol), unisets::PERMILLE_SIGN) {
}
bool PermilleMatcher::isDisabled(const ParsedNumber& result) const {
return 0 != (result.flags & FLAG_PERMILLE);
}
void PermilleMatcher::accept(StringSegment& segment, ParsedNumber& result) const {
result.flags |= FLAG_PERMILLE;
result.setCharsConsumed(segment);
}
PlusSignMatcher::PlusSignMatcher(const DecimalFormatSymbols& dfs, bool allowTrailing)
: SymbolMatcher(dfs.getConstSymbol(DecimalFormatSymbols::kPlusSignSymbol), unisets::PLUS_SIGN),
fAllowTrailing(allowTrailing) {
}
bool PlusSignMatcher::isDisabled(const ParsedNumber& result) const {
return !fAllowTrailing && result.seenNumber();
}
void PlusSignMatcher::accept(StringSegment& segment, ParsedNumber& result) const {
result.setCharsConsumed(segment);
}
#endif /* #if !UCONFIG_NO_FORMATTING */
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