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?? basictz.h(9.99 KB)
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?? datefmt.h(40.7 KB)
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?? errorcode.h(4.84 KB)
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?? filteredbrk.h(5.37 KB)
?? fmtable.h(24.37 KB)
?? format.h(12.51 KB)
?? formattednumber.h(6.28 KB)
?? formattedvalue.h(9.75 KB)
?? fpositer.h(3.03 KB)
?? gender.h(3.35 KB)
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?? icudataver.h(1.02 KB)
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?? idna.h(12.93 KB)
?? listformatter.h(8.59 KB)
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?? messageformat2_data_model_names.h(784 B)
?? messageformat2_formattable.h(38.36 KB)
?? messageformat2_function_registry.h(18.07 KB)
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?? msgfmt.h(44.2 KB)
?? normalizer2.h(34.68 KB)
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?? nounit.h(2.24 KB)
?? numberformatter.h(90.69 KB)
?? numberrangeformatter.h(26 KB)
?? numfmt.h(50.16 KB)
?? numsys.h(7.22 KB)
?? parseerr.h(3.08 KB)
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?? platform.h(27.18 KB)
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?? scientificnumberformatter.h(6.44 KB)
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?? simplenumberformatter.h(8.87 KB)
?? simpletz.h(45.62 KB)
?? smpdtfmt.h(57.06 KB)
?? sortkey.h(11.13 KB)
?? std_string.h(1.05 KB)
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?? tblcoll.h(36.96 KB)
?? timezone.h(45.59 KB)
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?? tzfmt.h(42.95 KB)
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?? ucnv.h(83.34 KB)
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?? udisplaycontext.h(5.94 KB)
?? udisplayoptions.h(8.86 KB)
?? uenum.h(7.79 KB)
?? ufieldpositer.h(4.41 KB)
?? uformattable.h(10.97 KB)
?? uformattednumber.h(8.09 KB)
?? uformattedvalue.h(12.25 KB)
?? ugender.h(2.06 KB)
?? uidna.h(34.12 KB)
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?? unum.h(55.16 KB)
?? unumberformatter.h(19.68 KB)
?? unumberoptions.h(5.23 KB)
?? unumberrangeformatter.h(15.35 KB)
?? unumsys.h(7.26 KB)
?? uobject.h(10.66 KB)
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?? uspoof.h(80 KB)
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?? ustdio.h(38.58 KB)
?? ustream.h(1.89 KB)
?? ustring.h(72.16 KB)
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?? utext.h(58.1 KB)
?? utf.h(7.87 KB)
?? utf16.h(23.35 KB)
?? utf32.h(763 B)
?? utf8.h(30.83 KB)
?? utf_old.h(45.8 KB)
?? utmscale.h(13.78 KB)
?? utrace.h(17.18 KB)
?? utrans.h(25.54 KB)
?? utypes.h(34.48 KB)
?? uvernum.h(6.33 KB)
?? uversion.h(8.21 KB)
?? vtzone.h(20.68 KB)

Editing: formattedvalue.h

// © 2018 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html

#ifndef __FORMATTEDVALUE_H__
#define __FORMATTEDVALUE_H__

#include "unicode/utypes.h"

#if U_SHOW_CPLUSPLUS_API

#if !UCONFIG_NO_FORMATTING

#include "unicode/appendable.h"
#include "unicode/fpositer.h"
#include "unicode/unistr.h"
#include "unicode/uformattedvalue.h"

U_NAMESPACE_BEGIN

/**
 * \file
 * \brief C++ API: Abstract operations for localized strings.
 * 
 * This file contains declarations for classes that deal with formatted strings. A number
 * of APIs throughout ICU use these classes for expressing their localized output.
 */

/**
 * Represents a span of a string containing a given field.
 *
 * This class differs from FieldPosition in the following ways:
 *
 *   1. It has information on the field category.
 *   2. It allows you to set constraints to use when iterating over field positions.
 *   3. It is used for the newer FormattedValue APIs.
 *
 * This class is not intended for public subclassing.
 *
 * @stable ICU 64
 */
class U_I18N_API ConstrainedFieldPosition : public UMemory {
  public:

/**
     * Initializes a ConstrainedFieldPosition.
     *
     * By default, the ConstrainedFieldPosition has no iteration constraints.
     *
     * @stable ICU 64
     */
    ConstrainedFieldPosition();

/** @stable ICU 64 */
    ~ConstrainedFieldPosition();

/**
     * Resets this ConstrainedFieldPosition to its initial state, as if it were newly created:
     *
     * - Removes any constraints that may have been set on the instance.
     * - Resets the iteration position.
     *
     * @stable ICU 64
     */
    void reset();

/**
     * Sets a constraint on the field category.
     * 
     * When this instance of ConstrainedFieldPosition is passed to FormattedValue#nextPosition,
     * positions are skipped unless they have the given category.
     *
     * Any previously set constraints are cleared.
     *
     * For example, to loop over only the number-related fields:
     *
     *     ConstrainedFieldPosition cfpos;
     *     cfpos.constrainCategory(UFIELDCATEGORY_NUMBER_FORMAT);
     *     while (fmtval.nextPosition(cfpos, status)) {
     *         // handle the number-related field position
     *     }
     *
     * Changing the constraint while in the middle of iterating over a FormattedValue
     * does not generally have well-defined behavior.
     *
     * @param category The field category to fix when iterating.
     * @stable ICU 64
     */
    void constrainCategory(int32_t category);

/**
     * Sets a constraint on the category and field.
     * 
     * When this instance of ConstrainedFieldPosition is passed to FormattedValue#nextPosition,
     * positions are skipped unless they have the given category and field.
     *
     * Any previously set constraints are cleared.
     *
     * For example, to loop over all grouping separators:
     *
     *     ConstrainedFieldPosition cfpos;
     *     cfpos.constrainField(UFIELDCATEGORY_NUMBER_FORMAT, UNUM_GROUPING_SEPARATOR_FIELD);
     *     while (fmtval.nextPosition(cfpos, status)) {
     *         // handle the grouping separator position
     *     }
     *
     * Changing the constraint while in the middle of iterating over a FormattedValue
     * does not generally have well-defined behavior.
     *
     * @param category The field category to fix when iterating.
     * @param field The field to fix when iterating.
     * @stable ICU 64
     */
    void constrainField(int32_t category, int32_t field);

/**
     * Gets the field category for the current position.
     *
     * The return value is well-defined only after
     * FormattedValue#nextPosition returns true.
     *
     * @return The field category saved in the instance.
     * @stable ICU 64
     */
    inline int32_t getCategory() const {
        return fCategory;
    }

/**
     * Gets the field for the current position.
     *
     * The return value is well-defined only after
     * FormattedValue#nextPosition returns true.
     *
     * @return The field saved in the instance.
     * @stable ICU 64
     */
    inline int32_t getField() const {
        return fField;
    }

/**
     * Gets the INCLUSIVE start index for the current position.
     *
     * The return value is well-defined only after FormattedValue#nextPosition returns true.
     *
     * @return The start index saved in the instance.
     * @stable ICU 64
     */
    inline int32_t getStart() const {
        return fStart;
    }

/**
     * Gets the EXCLUSIVE end index stored for the current position.
     *
     * The return value is well-defined only after FormattedValue#nextPosition returns true.
     *
     * @return The end index saved in the instance.
     * @stable ICU 64
     */
    inline int32_t getLimit() const {
        return fLimit;
    }

////////////////////////////////////////////////////////////////////
    //// The following methods are for FormattedValue implementers; ////
    //// most users can ignore them.                                ////
    ////////////////////////////////////////////////////////////////////

/**
     * Gets an int64 that FormattedValue implementations may use for storage.
     *
     * The initial value is zero.
     *
     * Users of FormattedValue should not need to call this method.
     *
     * @return The current iteration context from {@link #setInt64IterationContext}.
     * @stable ICU 64
     */
    inline int64_t getInt64IterationContext() const {
        return fContext;
    }

/**
     * Sets an int64 that FormattedValue implementations may use for storage.
     *
     * Intended to be used by FormattedValue implementations.
     *
     * @param context The new iteration context.
     * @stable ICU 64
     */
    void setInt64IterationContext(int64_t context);

/**
     * Determines whether a given field should be included given the
     * constraints.
     *
     * Intended to be used by FormattedValue implementations.
     *
     * @param category The category to test.
     * @param field The field to test.
     * @stable ICU 64
     */
    UBool matchesField(int32_t category, int32_t field) const;

/**
     * Sets new values for the primary public getters.
     *
     * Intended to be used by FormattedValue implementations.
     *
     * It is up to the implementation to ensure that the user-requested
     * constraints are satisfied. This method does not check!
     *
     * @param category The new field category.
     * @param field The new field.
     * @param start The new inclusive start index.
     * @param limit The new exclusive end index.
     * @stable ICU 64
     */
    void setState(
        int32_t category,
        int32_t field,
        int32_t start,
        int32_t limit);

private:
    int64_t fContext = 0LL;
    int32_t fField = 0;
    int32_t fStart = 0;
    int32_t fLimit = 0;
    int32_t fCategory = UFIELD_CATEGORY_UNDEFINED;
    int8_t fConstraint = 0;
};

/**
 * An abstract formatted value: a string with associated field attributes.
 * Many formatters format to classes implementing FormattedValue.
 *
 * @stable ICU 64
 */
class U_I18N_API FormattedValue /* not : public UObject because this is an interface/mixin class */ {
  public:
    /** @stable ICU 64 */
    virtual ~FormattedValue();

/**
     * Returns the formatted string as a self-contained UnicodeString.
     *
     * If you need the string within the current scope only, consider #toTempString.
     *
     * @param status Set if an error occurs.
     * @return a UnicodeString containing the formatted string.
     *
     * @stable ICU 64
     */
    virtual UnicodeString toString(UErrorCode& status) const = 0;

/**
     * Returns the formatted string as a read-only alias to memory owned by the FormattedValue.
     *
     * The return value is valid only as long as this FormattedValue is present and unchanged in
     * memory. If you need the string outside the current scope, consider #toString.
     *
     * The buffer returned by calling UnicodeString#getBuffer() on the return value is
     * guaranteed to be NUL-terminated.
     *
     * @param status Set if an error occurs.
     * @return a temporary UnicodeString containing the formatted string.
     *
     * @stable ICU 64
     */
    virtual UnicodeString toTempString(UErrorCode& status) const = 0;

/**
     * Appends the formatted string to an Appendable.
     *
     * @param appendable
     *         The Appendable to which to append the string output.
     * @param status Set if an error occurs.
     * @return The same Appendable, for chaining.
     *
     * @stable ICU 64
     * @see Appendable
     */
    virtual Appendable& appendTo(Appendable& appendable, UErrorCode& status) const = 0;

/**
     * Iterates over field positions in the FormattedValue. This lets you determine the position
     * of specific types of substrings, like a month or a decimal separator.
     *
     * To loop over all field positions:
     *
     *     ConstrainedFieldPosition cfpos;
     *     while (fmtval.nextPosition(cfpos, status)) {
     *         // handle the field position; get information from cfpos
     *     }
     *
     * @param cfpos
     *         The object used for iteration state. This can provide constraints to iterate over
     *         only one specific category or field;
     *         see ConstrainedFieldPosition#constrainCategory
     *         and ConstrainedFieldPosition#constrainField.
     * @param status Set if an error occurs.
     * @return true if a new occurrence of the field was found;
     *         false otherwise or if an error was set.
     *
     * @stable ICU 64
     */
    virtual UBool nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const = 0;
};

U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_FORMATTING */

#endif /* U_SHOW_CPLUSPLUS_API */

#endif // __FORMATTEDVALUE_H__

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