ICU 76.1: i18n/unicode/formattednumber.h Source File

ICU 76.1 76.1

formattednumber.h
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1 // © 2022 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3
4 #ifndef __FORMATTEDNUMBER_H__
5 #define __FORMATTEDNUMBER_H__
6
7 #include "unicode/utypes.h"
8
9 #if U_SHOW_CPLUSPLUS_API
10
11 #if !UCONFIG_NO_FORMATTING
12
13 #include "unicode/uobject.h"
14 #include "unicode/formattedvalue.h"
15 #include "unicode/measunit.h"
16 #include "unicode/udisplayoptions.h"
17
25 U_NAMESPACE_BEGIN
26
27 class FieldPositionIteratorHandler;
28 class SimpleDateFormat;
29
30 namespace number { // icu::number
31
32 namespace impl {
33 class DecimalQuantity;
34 class UFormattedNumberData;
35 struct UFormattedNumberImpl;
36 } // icu::number::impl
37
38
39
48 class U_I18N_API FormattedNumber : public UMemory, public FormattedValue {
49 public:
50
55 FormattedNumber()
56 : fData(nullptr), fErrorCode(U_INVALID_STATE_ERROR) {}
57
62 FormattedNumber(FormattedNumber&& src) noexcept;
63
68 virtual ~FormattedNumber() override;
69
71 FormattedNumber(const FormattedNumber&) = delete;
72
74 FormattedNumber& operator=(const FormattedNumber&) = delete;
75
80 FormattedNumber& operator=(FormattedNumber&& src) noexcept;
81
82 // Copybrief: this method is older than the parent method
90 UnicodeString toString(UErrorCode& status) const override;
91
92 // Copydoc: this method is new in ICU 64
94 UnicodeString toTempString(UErrorCode& status) const override;
95
96 // Copybrief: this method is older than the parent method
104 Appendable &appendTo(Appendable& appendable, UErrorCode& status) const override;
105
106 // Copydoc: this method is new in ICU 64
108 UBool nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const override;
109
128 template<typename StringClass>
129 inline StringClass toDecimalNumber(UErrorCode& status) const;
130
142 MeasureUnit getOutputUnit(UErrorCode& status) const;
143
151 UDisplayOptionsNounClass getNounClass(UErrorCode &status) const;
152
153 #ifndef U_HIDE_INTERNAL_API
154
159 void getDecimalQuantity(impl::DecimalQuantity& output, UErrorCode& status) const;
160
165 void getAllFieldPositionsImpl(FieldPositionIteratorHandler& fpih, UErrorCode& status) const;
166
167 #endif /* U_HIDE_INTERNAL_API */
168
169 private:
170 // Can't use LocalPointer because UFormattedNumberData is forward-declared
171 impl::UFormattedNumberData *fData;
172
173 // Error code for the terminal methods
174 UErrorCode fErrorCode;
175
180 explicit FormattedNumber(impl::UFormattedNumberData *results)
181 : fData(results), fErrorCode(U_ZERO_ERROR) {}
182
183 explicit FormattedNumber(UErrorCode errorCode)
184 : fData(nullptr), fErrorCode(errorCode) {}
185
186 void toDecimalNumber(ByteSink& sink, UErrorCode& status) const;
187
188 // To give LocalizedNumberFormatter format methods access to this class's constructor:
189 friend class LocalizedNumberFormatter;
190 friend class SimpleNumberFormatter;
191
192 // To give C API access to internals
193 friend struct impl::UFormattedNumberImpl;
194
195 // To give access to the data pointer for non-heap allocation
196 friend class icu::SimpleDateFormat;
197 };
198
199 template<typename StringClass>
200 StringClass FormattedNumber::toDecimalNumber(UErrorCode& status) const {
201 StringClass result;
202 StringByteSink<StringClass> sink(&result);
203 toDecimalNumber(sink, status);
204 return result;
205 }
206
207 } // namespace number
208 U_NAMESPACE_END
209
210 #endif /* #if !UCONFIG_NO_FORMATTING */
211
212 #endif /* U_SHOW_CPLUSPLUS_API */
213
214 #endif // __FORMATTEDNUMBER_H__
215
icu::Appendable
Base class for objects to which Unicode characters and strings can be appended.
Definition: appendable.h:54
icu::ByteSink
A ByteSink can be filled with bytes.
Definition: bytestream.h:53
icu::ConstrainedFieldPosition
Represents a span of a string containing a given field.
Definition: formattedvalue.h:41
icu::FormattedValue
An abstract formatted value: a string with associated field attributes.
Definition: formattedvalue.h:241
icu::MeasureUnit
A unit such as length, mass, volume, currency, etc.
Definition: measunit.h:409
icu::SimpleDateFormat
SimpleDateFormat is a concrete class for formatting and parsing dates in a language-independent manne...
Definition: smpdtfmt.h:385
icu::StringByteSink
Implementation of ByteSink that writes to a "string".
Definition: bytestream.h:267
icu::UMemory
UMemory is the common ICU base class.
Definition: uobject.h:115
icu::UnicodeString
UnicodeString is a string class that stores Unicode characters directly and provides similar function...
Definition: unistr.h:296
icu::number::FormattedNumber
The result of a number formatting operation.
Definition: formattednumber.h:48
icu::number::FormattedNumber::getDecimalQuantity
void getDecimalQuantity(impl::DecimalQuantity &output, UErrorCode &status) const
Gets the raw DecimalQuantity for plural rule selection.
icu::number::FormattedNumber::getNounClass
UDisplayOptionsNounClass getNounClass(UErrorCode &status) const
Gets the noun class of the formatted output.
icu::number::FormattedNumber::FormattedNumber
FormattedNumber(const FormattedNumber &)=delete
Copying not supported; use move constructor instead.
icu::number::FormattedNumber::getOutputUnit
MeasureUnit getOutputUnit(UErrorCode &status) const
Gets the resolved output unit.
icu::number::FormattedNumber::FormattedNumber
FormattedNumber()
Default constructor; makes an empty FormattedNumber.
Definition: formattednumber.h:55
icu::number::FormattedNumber::operator=
FormattedNumber & operator=(const FormattedNumber &)=delete
Copying not supported; use move assignment instead.
icu::number::FormattedNumber::getAllFieldPositionsImpl
void getAllFieldPositionsImpl(FieldPositionIteratorHandler &fpih, UErrorCode &status) const
Populates the mutable builder type FieldPositionIteratorHandler.
icu::number::FormattedNumber::~FormattedNumber
virtual ~FormattedNumber() override
Destruct an instance of FormattedNumber.
icu::number::FormattedNumber::toString
UnicodeString toString(UErrorCode &status) const override
Returns the formatted string as a self-contained UnicodeString.
icu::number::FormattedNumber::appendTo
Appendable & appendTo(Appendable &appendable, UErrorCode &status) const override
Appends the formatted string to an Appendable.
icu::number::FormattedNumber::FormattedNumber
FormattedNumber(FormattedNumber &&src) noexcept
Move constructor: Leaves the source FormattedNumber in an undefined state.
icu::number::FormattedNumber::nextPosition
UBool nextPosition(ConstrainedFieldPosition &cfpos, UErrorCode &status) const override
Iterates over field positions in the FormattedValue.
icu::number::FormattedNumber::toTempString
UnicodeString toTempString(UErrorCode &status) const override
Returns the formatted string as a read-only alias to memory owned by the FormattedValue.
icu::number::FormattedNumber::operator=
FormattedNumber & operator=(FormattedNumber &&src) noexcept
Move assignment: Leaves the source FormattedNumber in an undefined state.
formattedvalue.h
C++ API: Abstract operations for localized strings.
measunit.h
C++ API: A unit for measuring a quantity.
udisplayoptions.h
C API: Display options (enum types, values, helper functions)
UDisplayOptionsNounClass
UDisplayOptionsNounClass
Represents all the grammatical noun classes that are supported by CLDR.
Definition: udisplayoptions.h:134
UBool
int8_t UBool
The ICU boolean type, a signed-byte integer.
Definition: umachine.h:247
uobject.h
C++ API: Common ICU base class UObject.
utypes.h
Basic definitions for ICU, for both C and C++ APIs.
UErrorCode
UErrorCode
Standard ICU4C error code type, a substitute for exceptions.
Definition: utypes.h:430
U_INVALID_STATE_ERROR
@ U_INVALID_STATE_ERROR
Requested operation can not be completed with ICU in its current state.
Definition: utypes.h:494
U_ZERO_ERROR
@ U_ZERO_ERROR
No error, no warning.
Definition: utypes.h:465
U_I18N_API
#define U_I18N_API
Set to export library symbols from inside the i18n library, and to import them from outside.
Definition: utypes.h:316