/src/icu/source/i18n/formattedval_impl.h

Source (jump to first uncovered line)
// © 2018 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html

#ifndef __FORMVAL_IMPL_H__
#define __FORMVAL_IMPL_H__

#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING

// This file contains compliant implementations of FormattedValue which can be
// leveraged by ICU formatters.
//
// Each implementation is defined in its own cpp file in order to split
// dependencies more modularly.

#include "unicode/formattedvalue.h"
#include "capi_helper.h"
#include "fphdlimp.h"
#include "util.h"
#include "uvectr32.h"
#include "formatted_string_builder.h"


/**
 * Represents the type of constraint for ConstrainedFieldPosition.
 *
 * Constraints are used to control the behavior of iteration in FormattedValue.
 *
 * @internal
 */
typedef enum UCFPosConstraintType {
    /**
     * Represents the lack of a constraint.
     *
     * This is the value of fConstraint if no "constrain" methods were called.
     *
     * @internal
     */
    UCFPOS_CONSTRAINT_NONE = 0,

    /**
     * Represents that the field category is constrained.
     *
     * This is the value of fConstraint if constraintCategory was called.
     *
     * FormattedValue implementations should not change the field category
     * while this constraint is active.
     *
     * @internal
     */
    UCFPOS_CONSTRAINT_CATEGORY,

    /**
     * Represents that the field and field category are constrained.
     *
     * This is the value of fConstraint if constraintField was called.
     *
     * FormattedValue implementations should not change the field or field category
     * while this constraint is active.
     *
     * @internal
     */
    UCFPOS_CONSTRAINT_FIELD
} UCFPosConstraintType;


U_NAMESPACE_BEGIN


/**
 * Implementation of FormattedValue using FieldPositionHandler to accept fields.
 *
 * TODO(ICU-20897): This class is unused. If it is not needed when fixing ICU-20897,
 * it should be deleted.
 */
class FormattedValueFieldPositionIteratorImpl : public UMemory, public FormattedValue {
public:

    /** @param initialFieldCapacity Initially allocate space for this many fields. */
    FormattedValueFieldPositionIteratorImpl(int32_t initialFieldCapacity, UErrorCode& status);

    virtual ~FormattedValueFieldPositionIteratorImpl();

    // Implementation of FormattedValue (const):

    UnicodeString toString(UErrorCode& status) const U_OVERRIDE;
    UnicodeString toTempString(UErrorCode& status) const U_OVERRIDE;
    Appendable& appendTo(Appendable& appendable, UErrorCode& status) const U_OVERRIDE;
    UBool nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const U_OVERRIDE;

    // Additional methods used during construction phase only (non-const):

    FieldPositionIteratorHandler getHandler(UErrorCode& status);
    void appendString(UnicodeString string, UErrorCode& status);

    /**
     * Computes the spans for duplicated values.
     * For example, if the string has fields:
     * 
     *     ...aa..[b.cc]..d.[bb.e.c]..a..
     *
     * then the spans will be the bracketed regions.
     *
     * Assumes that the currently known fields are sorted
     * and all in the same category.
     */
    void addOverlapSpans(UFieldCategory spanCategory, int8_t firstIndex, UErrorCode& status);

    /**
     * Sorts the fields: start index first, length second.
     */
    void sort();

private:
    UnicodeString fString;
    UVector32 fFields;
};


// Internal struct that must be exported for MSVC
struct U_I18N_API SpanInfo {
    UFieldCategory category;
    int32_t spanValue;
    int32_t start;
    int32_t length;
};

// Export an explicit template instantiation of the MaybeStackArray that
//    is used as a data member of CEBuffer.
//
//    When building DLLs for Windows this is required even though
//    no direct access to the MaybeStackArray leaks out of the i18n library.
//
// See digitlst.h, pluralaffix.h, datefmt.h, and others for similar examples.
//
#if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
template class U_I18N_API MaybeStackArray<SpanInfo, 8>;
#endif

/**
 * Implementation of FormattedValue based on FormattedStringBuilder.
 *
 * The implementation currently revolves around numbers and number fields.
 * However, it can be generalized in the future when there is a need.
 *
 * @author sffc (Shane Carr)
 */
// Exported as U_I18N_API for tests
class U_I18N_API FormattedValueStringBuilderImpl : public UMemory, public FormattedValue {
public:

    FormattedValueStringBuilderImpl(FormattedStringBuilder::Field numericField);

    virtual ~FormattedValueStringBuilderImpl();

    // Implementation of FormattedValue (const):

    UnicodeString toString(UErrorCode& status) const U_OVERRIDE;
    UnicodeString toTempString(UErrorCode& status) const U_OVERRIDE;
    Appendable& appendTo(Appendable& appendable, UErrorCode& status) const U_OVERRIDE;
    UBool nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const U_OVERRIDE;

    // Additional helper functions:
    UBool nextFieldPosition(FieldPosition& fp, UErrorCode& status) const;
    void getAllFieldPositions(FieldPositionIteratorHandler& fpih, UErrorCode& status) const;
    inline FormattedStringBuilder& getStringRef() {
        return fString;
    }
    inline const FormattedStringBuilder& getStringRef() const {
        return fString;
    }

    /**
     * Adds additional metadata used for span fields.
     *
     * category: the category to use for the span field.
     * spanValue: the value of the span field: index of the list item, for example.
     * start: the start position within the string of the span. -1 if unknown.
     * length: the length of the span, used to split adjacent fields.
     */
    void appendSpanInfo(UFieldCategory category, int32_t spanValue, int32_t start, int32_t length, UErrorCode& status);
    void prependSpanInfo(UFieldCategory category, int32_t spanValue, int32_t start, int32_t length, UErrorCode& status);

private:
    FormattedStringBuilder fString;
    FormattedStringBuilder::Field fNumericField;
    MaybeStackArray<SpanInfo, 8> spanIndices;
    int32_t spanIndicesCount = 0;

    bool nextPositionImpl(ConstrainedFieldPosition& cfpos, FormattedStringBuilder::Field numericField, UErrorCode& status) const;
    static bool isIntOrGroup(FormattedStringBuilder::Field field);
    static bool isTrimmable(FormattedStringBuilder::Field field);
    int32_t trimBack(int32_t limit) const;
    int32_t trimFront(int32_t start) const;
};


// C API Helpers for FormattedValue
// Magic number as ASCII == "UFV"
struct UFormattedValueImpl;
typedef IcuCApiHelper<UFormattedValue, UFormattedValueImpl, 0x55465600> UFormattedValueApiHelper;
struct UFormattedValueImpl : public UMemory, public UFormattedValueApiHelper {
    // This pointer should be set by the child class.
    FormattedValue* fFormattedValue = nullptr;
};


/** Boilerplate to check for valid status before dereferencing the fData pointer. */
#define UPRV_FORMATTED_VALUE_METHOD_GUARD(returnExpression) \
    if (U_FAILURE(status)) { \
        return returnExpression; \
    } \
    if (fData == nullptr) { \
        status = fErrorCode; \
        return returnExpression; \
    } \


/** Implementation of the methods from U_FORMATTED_VALUE_SUBCLASS_AUTO. */
#define UPRV_FORMATTED_VALUE_SUBCLASS_AUTO_IMPL(Name) \
    Name::Name(Name&& src) U_NOEXCEPT \
            : fData(src.fData), fErrorCode(src.fErrorCode) { \
        src.fData = nullptr; \
        src.fErrorCode = U_INVALID_STATE_ERROR; \
    } \
    Name::~Name() { \
        delete fData; \
        fData = nullptr; \
    } \
    Name& Name::operator=(Name&& src) U_NOEXCEPT { \
        delete fData; \
        fData = src.fData; \
        src.fData = nullptr; \
        fErrorCode = src.fErrorCode; \
        src.fErrorCode = U_INVALID_STATE_ERROR; \
        return *this; \
    } \
    UnicodeString Name::toString(UErrorCode& status) const { \
        UPRV_FORMATTED_VALUE_METHOD_GUARD(ICU_Utility::makeBogusString()) \
        return fData->toString(status); \
    } \
    UnicodeString Name::toTempString(UErrorCode& status) const { \
        UPRV_FORMATTED_VALUE_METHOD_GUARD(ICU_Utility::makeBogusString()) \
        return fData->toTempString(status); \
    } \
    Appendable& Name::appendTo(Appendable& appendable, UErrorCode& status) const { \
        UPRV_FORMATTED_VALUE_METHOD_GUARD(appendable) \
        return fData->appendTo(appendable, status); \
    } \
    UBool Name::nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const { \
        UPRV_FORMATTED_VALUE_METHOD_GUARD(false) \
        return fData->nextPosition(cfpos, status); \
    }


/** Like UPRV_FORMATTED_VALUE_CAPI_AUTO_IMPL but without impl type declarations. */
#define UPRV_FORMATTED_VALUE_CAPI_NO_IMPLTYPE_AUTO_IMPL(CType, ImplType, HelperType, Prefix) \
    U_CAPI CType* U_EXPORT2 \
    Prefix ## _openResult (UErrorCode* ec) { \
        if (U_FAILURE(*ec)) { \
            return nullptr; \
        } \
        ImplType* impl = new ImplType(); \
        if (impl == nullptr) { \
            *ec = U_MEMORY_ALLOCATION_ERROR; \
            return nullptr; \
        } \
        return static_cast<HelperType*>(impl)->exportForC(); \
    } \
    U_CAPI const UFormattedValue* U_EXPORT2 \
    Prefix ## _resultAsValue (const CType* uresult, UErrorCode* ec) { \
        const ImplType* result = HelperType::validate(uresult, *ec); \
        if (U_FAILURE(*ec)) { return nullptr; } \
        return static_cast<const UFormattedValueApiHelper*>(result)->exportConstForC(); \
    } \
    U_CAPI void U_EXPORT2 \
    Prefix ## _closeResult (CType* uresult) { \
        UErrorCode localStatus = U_ZERO_ERROR; \
        const ImplType* impl = HelperType::validate(uresult, localStatus); \
        delete impl; \
    }


/**
 * Implementation of the standard methods for a UFormattedValue "subclass" C API.
 * @param CPPType The public C++ type, like FormattedList
 * @param CType The public C type, like UFormattedList
 * @param ImplType A name to use for the implementation class
 * @param HelperType A name to use for the "mixin" typedef for C API conversion
 * @param Prefix The C API prefix, like ulistfmt
 * @param MagicNumber A unique 32-bit number to use to identify this type
 */
#define UPRV_FORMATTED_VALUE_CAPI_AUTO_IMPL(CPPType, CType, ImplType, HelperType, Prefix, MagicNumber) \
    U_NAMESPACE_BEGIN \
    class ImplType; \
    typedef IcuCApiHelper<CType, ImplType, MagicNumber> HelperType; \
    class ImplType : public UFormattedValueImpl, public HelperType { \
    public: \
        ImplType(); \
        ~ImplType(); \
        CPPType fImpl; \
    }; \
    ImplType::ImplType() { \
        fFormattedValue = &fImpl; \
    } \
    ImplType::~ImplType() {} \
    U_NAMESPACE_END \
    UPRV_FORMATTED_VALUE_CAPI_NO_IMPLTYPE_AUTO_IMPL(CType, ImplType, HelperType, Prefix)


U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_FORMATTING */
#endif // __FORMVAL_IMPL_H__

Coverage Report

Created: 2025-01-28 06:38

Line	Count	Source (jump to first uncovered line)
1		// © 2018 and later: Unicode, Inc. and others.
2		// License & terms of use: http://www.unicode.org/copyright.html
3
4		#ifndef __FORMVAL_IMPL_H__
5		#define __FORMVAL_IMPL_H__
6
7		#include "unicode/utypes.h"
8		#if !UCONFIG_NO_FORMATTING
9
10		// This file contains compliant implementations of FormattedValue which can be
11		// leveraged by ICU formatters.
12		//
13		// Each implementation is defined in its own cpp file in order to split
14		// dependencies more modularly.
15
16		#include "unicode/formattedvalue.h"
17		#include "capi_helper.h"
18		#include "fphdlimp.h"
19		#include "util.h"
20		#include "uvectr32.h"
21		#include "formatted_string_builder.h"
22
23
24		/**
25		* Represents the type of constraint for ConstrainedFieldPosition.
26		*
27		* Constraints are used to control the behavior of iteration in FormattedValue.
28		*
29		* @internal
30		*/
31		typedef enum UCFPosConstraintType {
32		/**
33		* Represents the lack of a constraint.
34		*
35		* This is the value of fConstraint if no "constrain" methods were called.
36		*
37		* @internal
38		*/
39		UCFPOS_CONSTRAINT_NONE = 0,
40
41		/**
42		* Represents that the field category is constrained.
43		*
44		* This is the value of fConstraint if constraintCategory was called.
45		*
46		* FormattedValue implementations should not change the field category
47		* while this constraint is active.
48		*
49		* @internal
50		*/
51		UCFPOS_CONSTRAINT_CATEGORY,
52
53		/**
54		* Represents that the field and field category are constrained.
55		*
56		* This is the value of fConstraint if constraintField was called.
57		*
58		* FormattedValue implementations should not change the field or field category
59		* while this constraint is active.
60		*
61		* @internal
62		*/
63		UCFPOS_CONSTRAINT_FIELD
64		} UCFPosConstraintType;
65
66
67		U_NAMESPACE_BEGIN
68
69
70		/**
71		* Implementation of FormattedValue using FieldPositionHandler to accept fields.
72		*
73		* TODO(ICU-20897): This class is unused. If it is not needed when fixing ICU-20897,
74		* it should be deleted.
75		*/
76		class FormattedValueFieldPositionIteratorImpl : public UMemory, public FormattedValue {
77		public:
78
79		/** @param initialFieldCapacity Initially allocate space for this many fields. */
80		FormattedValueFieldPositionIteratorImpl(int32_t initialFieldCapacity, UErrorCode& status);
81
82		virtual ~FormattedValueFieldPositionIteratorImpl();
83
84		// Implementation of FormattedValue (const):
85
86		UnicodeString toString(UErrorCode& status) const U_OVERRIDE;
87		UnicodeString toTempString(UErrorCode& status) const U_OVERRIDE;
88		Appendable& appendTo(Appendable& appendable, UErrorCode& status) const U_OVERRIDE;
89		UBool nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const U_OVERRIDE;
90
91		// Additional methods used during construction phase only (non-const):
92
93		FieldPositionIteratorHandler getHandler(UErrorCode& status);
94		void appendString(UnicodeString string, UErrorCode& status);
95
96		/**
97		* Computes the spans for duplicated values.
98		* For example, if the string has fields:
99		*
100		* ...aa..[b.cc]..d.[bb.e.c]..a..
101		*
102		* then the spans will be the bracketed regions.
103		*
104		* Assumes that the currently known fields are sorted
105		* and all in the same category.
106		*/
107		void addOverlapSpans(UFieldCategory spanCategory, int8_t firstIndex, UErrorCode& status);
108
109		/**
110		* Sorts the fields: start index first, length second.
111		*/
112		void sort();
113
114		private:
115		UnicodeString fString;
116		UVector32 fFields;
117		};
118
119
120		// Internal struct that must be exported for MSVC
121		struct U_I18N_API SpanInfo {
122		UFieldCategory category;
123		int32_t spanValue;
124		int32_t start;
125		int32_t length;
126		};
127
128		// Export an explicit template instantiation of the MaybeStackArray that
129		// is used as a data member of CEBuffer.
130		//
131		// When building DLLs for Windows this is required even though
132		// no direct access to the MaybeStackArray leaks out of the i18n library.
133		//
134		// See digitlst.h, pluralaffix.h, datefmt.h, and others for similar examples.
135		//
136		#if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN
137		template class U_I18N_API MaybeStackArray<SpanInfo, 8>;
138		#endif
139
140		/**
141		* Implementation of FormattedValue based on FormattedStringBuilder.
142		*
143		* The implementation currently revolves around numbers and number fields.
144		* However, it can be generalized in the future when there is a need.
145		*
146		* @author sffc (Shane Carr)
147		*/
148		// Exported as U_I18N_API for tests
149		class U_I18N_API FormattedValueStringBuilderImpl : public UMemory, public FormattedValue {
150		public:
151
152		FormattedValueStringBuilderImpl(FormattedStringBuilder::Field numericField);
153
154		virtual ~FormattedValueStringBuilderImpl();
155
156		// Implementation of FormattedValue (const):
157
158		UnicodeString toString(UErrorCode& status) const U_OVERRIDE;
159		UnicodeString toTempString(UErrorCode& status) const U_OVERRIDE;
160		Appendable& appendTo(Appendable& appendable, UErrorCode& status) const U_OVERRIDE;
161		UBool nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const U_OVERRIDE;
162
163		// Additional helper functions:
164		UBool nextFieldPosition(FieldPosition& fp, UErrorCode& status) const;
165		void getAllFieldPositions(FieldPositionIteratorHandler& fpih, UErrorCode& status) const;
166	0	inline FormattedStringBuilder& getStringRef() {
167	0	return fString;
168	0	}
169	0	inline const FormattedStringBuilder& getStringRef() const {
170	0	return fString;
171	0	}
172
173		/**
174		* Adds additional metadata used for span fields.
175		*
176		* category: the category to use for the span field.
177		* spanValue: the value of the span field: index of the list item, for example.
178		* start: the start position within the string of the span. -1 if unknown.
179		* length: the length of the span, used to split adjacent fields.
180		*/
181		void appendSpanInfo(UFieldCategory category, int32_t spanValue, int32_t start, int32_t length, UErrorCode& status);
182		void prependSpanInfo(UFieldCategory category, int32_t spanValue, int32_t start, int32_t length, UErrorCode& status);
183
184		private:
185		FormattedStringBuilder fString;
186		FormattedStringBuilder::Field fNumericField;
187		MaybeStackArray<SpanInfo, 8> spanIndices;
188		int32_t spanIndicesCount = 0;
189
190		bool nextPositionImpl(ConstrainedFieldPosition& cfpos, FormattedStringBuilder::Field numericField, UErrorCode& status) const;
191		static bool isIntOrGroup(FormattedStringBuilder::Field field);
192		static bool isTrimmable(FormattedStringBuilder::Field field);
193		int32_t trimBack(int32_t limit) const;
194		int32_t trimFront(int32_t start) const;
195		};
196
197
198		// C API Helpers for FormattedValue
199		// Magic number as ASCII == "UFV"
200		struct UFormattedValueImpl;
201		typedef IcuCApiHelper<UFormattedValue, UFormattedValueImpl, 0x55465600> UFormattedValueApiHelper;
202		struct UFormattedValueImpl : public UMemory, public UFormattedValueApiHelper {
203		// This pointer should be set by the child class.
204		FormattedValue* fFormattedValue = nullptr;
205		};
206
207
208		/** Boilerplate to check for valid status before dereferencing the fData pointer. */
209		#define UPRV_FORMATTED_VALUE_METHOD_GUARD(returnExpression) \
210	0	if (U_FAILURE(status)) { \
211	0	return returnExpression; \
212	0	} \
213	0	if (fData == nullptr) { \
214	0	status = fErrorCode; \
215	0	return returnExpression; \
216	0	} \
217
218
219		/** Implementation of the methods from U_FORMATTED_VALUE_SUBCLASS_AUTO. */
220		#define UPRV_FORMATTED_VALUE_SUBCLASS_AUTO_IMPL(Name) \
221		Name::Name(Name&& src) U_NOEXCEPT \
222	0	: fData(src.fData), fErrorCode(src.fErrorCode) { \
223	0	src.fData = nullptr; \
224	0	src.fErrorCode = U_INVALID_STATE_ERROR; \
225	0	} \ Unexecuted instantiation: icu_70::number::FormattedNumber::FormattedNumber(icu_70::number::FormattedNumber&&) Unexecuted instantiation: icu_70::number::FormattedNumberRange::FormattedNumberRange(icu_70::number::FormattedNumberRange&&) Unexecuted instantiation: icu_70::FormattedList::FormattedList(icu_70::FormattedList&&)
226	0	Name::~Name() { \
227	0	delete fData; \
228	0	fData = nullptr; \
229	0	} \ Unexecuted instantiation: icu_70::number::FormattedNumber::~FormattedNumber() Unexecuted instantiation: icu_70::number::FormattedNumberRange::~FormattedNumberRange() Unexecuted instantiation: icu_70::FormattedList::~FormattedList()
230	0	Name& Name::operator=(Name&& src) U_NOEXCEPT { \
231	0	delete fData; \
232	0	fData = src.fData; \
233	0	src.fData = nullptr; \
234	0	fErrorCode = src.fErrorCode; \
235	0	src.fErrorCode = U_INVALID_STATE_ERROR; \
236	0	return *this; \
237	0	} \ Unexecuted instantiation: icu_70::number::FormattedNumber::operator=(icu_70::number::FormattedNumber&&) Unexecuted instantiation: icu_70::number::FormattedNumberRange::operator=(icu_70::number::FormattedNumberRange&&) Unexecuted instantiation: icu_70::FormattedList::operator=(icu_70::FormattedList&&)
238	0	UnicodeString Name::toString(UErrorCode& status) const { \
239	0	UPRV_FORMATTED_VALUE_METHOD_GUARD(ICU_Utility::makeBogusString()) \
240	0	return fData->toString(status); \
241	0	} \ Unexecuted instantiation: icu_70::number::FormattedNumber::toString(UErrorCode&) const Unexecuted instantiation: icu_70::number::FormattedNumberRange::toString(UErrorCode&) const Unexecuted instantiation: icu_70::FormattedList::toString(UErrorCode&) const
242	0	UnicodeString Name::toTempString(UErrorCode& status) const { \
243	0	UPRV_FORMATTED_VALUE_METHOD_GUARD(ICU_Utility::makeBogusString()) \
244	0	return fData->toTempString(status); \
245	0	} \ Unexecuted instantiation: icu_70::number::FormattedNumber::toTempString(UErrorCode&) const Unexecuted instantiation: icu_70::number::FormattedNumberRange::toTempString(UErrorCode&) const Unexecuted instantiation: icu_70::FormattedList::toTempString(UErrorCode&) const
246	0	Appendable& Name::appendTo(Appendable& appendable, UErrorCode& status) const { \
247	0	UPRV_FORMATTED_VALUE_METHOD_GUARD(appendable) \
248	0	return fData->appendTo(appendable, status); \
249	0	} \ Unexecuted instantiation: icu_70::number::FormattedNumber::appendTo(icu_70::Appendable&, UErrorCode&) const Unexecuted instantiation: icu_70::number::FormattedNumberRange::appendTo(icu_70::Appendable&, UErrorCode&) const Unexecuted instantiation: icu_70::FormattedList::appendTo(icu_70::Appendable&, UErrorCode&) const
250	0	UBool Name::nextPosition(ConstrainedFieldPosition& cfpos, UErrorCode& status) const { \
251	0	UPRV_FORMATTED_VALUE_METHOD_GUARD(false) \
252	0	return fData->nextPosition(cfpos, status); \
253	0	} Unexecuted instantiation: icu_70::number::FormattedNumber::nextPosition(icu_70::ConstrainedFieldPosition&, UErrorCode&) const Unexecuted instantiation: icu_70::number::FormattedNumberRange::nextPosition(icu_70::ConstrainedFieldPosition&, UErrorCode&) const Unexecuted instantiation: icu_70::FormattedList::nextPosition(icu_70::ConstrainedFieldPosition&, UErrorCode&) const
254
255
256		/** Like UPRV_FORMATTED_VALUE_CAPI_AUTO_IMPL but without impl type declarations. */
257		#define UPRV_FORMATTED_VALUE_CAPI_NO_IMPLTYPE_AUTO_IMPL(CType, ImplType, HelperType, Prefix) \
258		U_CAPI CType* U_EXPORT2 \
259		Prefix ## _openResult (UErrorCode* ec) { \
260		if (U_FAILURE(*ec)) { \
261		return nullptr; \
262		} \
263		ImplType* impl = new ImplType(); \
264		if (impl == nullptr) { \
265		*ec = U_MEMORY_ALLOCATION_ERROR; \
266		return nullptr; \
267		} \
268		return static_cast<HelperType*>(impl)->exportForC(); \
269		} \
270		U_CAPI const UFormattedValue* U_EXPORT2 \
271		Prefix ## _resultAsValue (const CType* uresult, UErrorCode* ec) { \
272		const ImplType* result = HelperType::validate(uresult, *ec); \
273		if (U_FAILURE(*ec)) { return nullptr; } \
274		return static_cast<const UFormattedValueApiHelper*>(result)->exportConstForC(); \
275		} \
276		U_CAPI void U_EXPORT2 \
277		Prefix ## _closeResult (CType* uresult) { \
278		UErrorCode localStatus = U_ZERO_ERROR; \
279		const ImplType* impl = HelperType::validate(uresult, localStatus); \
280		delete impl; \
281		}
282
283
284		/**
285		* Implementation of the standard methods for a UFormattedValue "subclass" C API.
286		* @param CPPType The public C++ type, like FormattedList
287		* @param CType The public C type, like UFormattedList
288		* @param ImplType A name to use for the implementation class
289		* @param HelperType A name to use for the "mixin" typedef for C API conversion
290		* @param Prefix The C API prefix, like ulistfmt
291		* @param MagicNumber A unique 32-bit number to use to identify this type
292		*/
293		#define UPRV_FORMATTED_VALUE_CAPI_AUTO_IMPL(CPPType, CType, ImplType, HelperType, Prefix, MagicNumber) \
294		U_NAMESPACE_BEGIN \
295		class ImplType; \
296		typedef IcuCApiHelper<CType, ImplType, MagicNumber> HelperType; \
297		class ImplType : public UFormattedValueImpl, public HelperType { \
298		public: \
299		ImplType(); \
300		~ImplType(); \
301		CPPType fImpl; \
302		}; \
303		ImplType::ImplType() { \
304		fFormattedValue = &fImpl; \
305		} \
306		ImplType::~ImplType() {} \
307		U_NAMESPACE_END \
308		UPRV_FORMATTED_VALUE_CAPI_NO_IMPLTYPE_AUTO_IMPL(CType, ImplType, HelperType, Prefix)
309
310
311		U_NAMESPACE_END
312
313		#endif /* #if !UCONFIG_NO_FORMATTING */
314		#endif // __FORMVAL_IMPL_H__