[apple/icu.git] / icuSources / common / characterproperties.cpp

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

// characterproperties.cpp
// created: 2018sep03 Markus W. Scherer

#include "unicode/utypes.h"
#include "unicode/localpointer.h"
#include "unicode/uchar.h"
#include "unicode/ucpmap.h"
#include "unicode/ucptrie.h"
#include "unicode/umutablecptrie.h"
#include "unicode/uniset.h"
#include "unicode/uscript.h"
#include "unicode/uset.h"
#include "cmemory.h"
#include "mutex.h"
#include "normalizer2impl.h"
#include "uassert.h"
#include "ubidi_props.h"
#include "ucase.h"
#include "ucln_cmn.h"
#include "umutex.h"
#include "uprops.h"

using icu::LocalPointer;
#if !UCONFIG_NO_NORMALIZATION
using icu::Normalizer2Factory;
using icu::Normalizer2Impl;
#endif
using icu::UInitOnce;
using icu::UnicodeSet;

namespace {

UBool U_CALLCONV characterproperties_cleanup();

constexpr int32_t NUM_INCLUSIONS = UPROPS_SRC_COUNT + UCHAR_INT_LIMIT - UCHAR_INT_START;

struct Inclusion {
    UnicodeSet  *fSet = nullptr;
    UInitOnce    fInitOnce = U_INITONCE_INITIALIZER;
};
Inclusion gInclusions[NUM_INCLUSIONS]; // cached getInclusions()

UnicodeSet *sets[UCHAR_BINARY_LIMIT] = {};

UCPMap *maps[UCHAR_INT_LIMIT - UCHAR_INT_START] = {};

icu::UMutex *cpMutex() {
    static icu::UMutex *m = STATIC_NEW(icu::UMutex);
    return m;
}

//----------------------------------------------------------------
// Inclusions list
//----------------------------------------------------------------

// USetAdder implementation
// Does not use uset.h to reduce code dependencies
void U_CALLCONV
_set_add(USet *set, UChar32 c) {
    ((UnicodeSet *)set)->add(c);
}

void U_CALLCONV
_set_addRange(USet *set, UChar32 start, UChar32 end) {
    ((UnicodeSet *)set)->add(start, end);
}

void U_CALLCONV
_set_addString(USet *set, const UChar *str, int32_t length) {
    ((UnicodeSet *)set)->add(icu::UnicodeString((UBool)(length<0), str, length));
}

UBool U_CALLCONV characterproperties_cleanup() {
    for (Inclusion &in: gInclusions) {
        delete in.fSet;
        in.fSet = nullptr;
        in.fInitOnce.reset();
    }
    for (int32_t i = 0; i < UPRV_LENGTHOF(sets); ++i) {
        delete sets[i];
        sets[i] = nullptr;
    }
    for (int32_t i = 0; i < UPRV_LENGTHOF(maps); ++i) {
        ucptrie_close(reinterpret_cast<UCPTrie *>(maps[i]));
        maps[i] = nullptr;
    }
    return TRUE;
}

void U_CALLCONV initInclusion(UPropertySource src, UErrorCode &errorCode) {
    // This function is invoked only via umtx_initOnce().
    U_ASSERT(0 <= src && src < UPROPS_SRC_COUNT);
    if (src == UPROPS_SRC_NONE) {
        errorCode = U_INTERNAL_PROGRAM_ERROR;
        return;
    }
    U_ASSERT(gInclusions[src].fSet == nullptr);

    LocalPointer<UnicodeSet> incl(new UnicodeSet());
    if (incl.isNull()) {
        errorCode = U_MEMORY_ALLOCATION_ERROR;
        return;
    }
    USetAdder sa = {
        (USet *)incl.getAlias(),
        _set_add,
        _set_addRange,
        _set_addString,
        nullptr, // don't need remove()
        nullptr // don't need removeRange()
    };

    switch(src) {
    case UPROPS_SRC_CHAR:
        uchar_addPropertyStarts(&sa, &errorCode);
        break;
    case UPROPS_SRC_PROPSVEC:
        upropsvec_addPropertyStarts(&sa, &errorCode);
        break;
    case UPROPS_SRC_CHAR_AND_PROPSVEC:
        uchar_addPropertyStarts(&sa, &errorCode);
        upropsvec_addPropertyStarts(&sa, &errorCode);
        break;
#if !UCONFIG_NO_NORMALIZATION
    case UPROPS_SRC_CASE_AND_NORM: {
        const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
        if(U_SUCCESS(errorCode)) {
            impl->addPropertyStarts(&sa, errorCode);
        }
        ucase_addPropertyStarts(&sa, &errorCode);
        break;
    }
    case UPROPS_SRC_NFC: {
        const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
        if(U_SUCCESS(errorCode)) {
            impl->addPropertyStarts(&sa, errorCode);
        }
        break;
    }
    case UPROPS_SRC_NFKC: {
        const Normalizer2Impl *impl=Normalizer2Factory::getNFKCImpl(errorCode);
        if(U_SUCCESS(errorCode)) {
            impl->addPropertyStarts(&sa, errorCode);
        }
        break;
    }
    case UPROPS_SRC_NFKC_CF: {
        const Normalizer2Impl *impl=Normalizer2Factory::getNFKC_CFImpl(errorCode);
        if(U_SUCCESS(errorCode)) {
            impl->addPropertyStarts(&sa, errorCode);
        }
        break;
    }
    case UPROPS_SRC_NFC_CANON_ITER: {
        const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
        if(U_SUCCESS(errorCode)) {
            impl->addCanonIterPropertyStarts(&sa, errorCode);
        }
        break;
    }
#endif
    case UPROPS_SRC_CASE:
        ucase_addPropertyStarts(&sa, &errorCode);
        break;
    case UPROPS_SRC_BIDI:
        ubidi_addPropertyStarts(&sa, &errorCode);
        break;
    case UPROPS_SRC_INPC:
    case UPROPS_SRC_INSC:
    case UPROPS_SRC_VO:
        uprops_addPropertyStarts((UPropertySource)src, &sa, &errorCode);
        break;
    default:
        errorCode = U_INTERNAL_PROGRAM_ERROR;
        break;
    }

    if (U_FAILURE(errorCode)) {
        return;
    }
    if (incl->isBogus()) {
        errorCode = U_MEMORY_ALLOCATION_ERROR;
        return;
    }
    // Compact for caching.
    incl->compact();
    gInclusions[src].fSet = incl.orphan();
    ucln_common_registerCleanup(UCLN_COMMON_CHARACTERPROPERTIES, characterproperties_cleanup);
}

const UnicodeSet *getInclusionsForSource(UPropertySource src, UErrorCode &errorCode) {
    if (U_FAILURE(errorCode)) { return nullptr; }
    if (src < 0 || UPROPS_SRC_COUNT <= src) {
        errorCode = U_ILLEGAL_ARGUMENT_ERROR;
        return nullptr;
    }
    Inclusion &i = gInclusions[src];
    umtx_initOnce(i.fInitOnce, &initInclusion, src, errorCode);
    return i.fSet;
}

void U_CALLCONV initIntPropInclusion(UProperty prop, UErrorCode &errorCode) {
    // This function is invoked only via umtx_initOnce().
    U_ASSERT(UCHAR_INT_START <= prop && prop < UCHAR_INT_LIMIT);
    int32_t inclIndex = UPROPS_SRC_COUNT + prop - UCHAR_INT_START;
    U_ASSERT(gInclusions[inclIndex].fSet == nullptr);
    UPropertySource src = uprops_getSource(prop);
    const UnicodeSet *incl = getInclusionsForSource(src, errorCode);
    if (U_FAILURE(errorCode)) {
        return;
    }

    LocalPointer<UnicodeSet> intPropIncl(new UnicodeSet(0, 0));
    if (intPropIncl.isNull()) {
        errorCode = U_MEMORY_ALLOCATION_ERROR;
        return;
    }
    int32_t numRanges = incl->getRangeCount();
    int32_t prevValue = 0;
    for (int32_t i = 0; i < numRanges; ++i) {
        UChar32 rangeEnd = incl->getRangeEnd(i);
        for (UChar32 c = incl->getRangeStart(i); c <= rangeEnd; ++c) {
            // TODO: Get a UCharacterProperty.IntProperty to avoid the property dispatch.
            int32_t value = u_getIntPropertyValue(c, prop);
            if (value != prevValue) {
                intPropIncl->add(c);
                prevValue = value;
            }
        }
    }

    if (intPropIncl->isBogus()) {
        errorCode = U_MEMORY_ALLOCATION_ERROR;
        return;
    }
    // Compact for caching.
    intPropIncl->compact();
    gInclusions[inclIndex].fSet = intPropIncl.orphan();
    ucln_common_registerCleanup(UCLN_COMMON_CHARACTERPROPERTIES, characterproperties_cleanup);
}

}  // namespace

U_NAMESPACE_BEGIN

const UnicodeSet *CharacterProperties::getInclusionsForProperty(
        UProperty prop, UErrorCode &errorCode) {
    if (U_FAILURE(errorCode)) { return nullptr; }
    if (UCHAR_INT_START <= prop && prop < UCHAR_INT_LIMIT) {
        int32_t inclIndex = UPROPS_SRC_COUNT + prop - UCHAR_INT_START;
        Inclusion &i = gInclusions[inclIndex];
        umtx_initOnce(i.fInitOnce, &initIntPropInclusion, prop, errorCode);
        return i.fSet;
    } else {
        UPropertySource src = uprops_getSource(prop);
        return getInclusionsForSource(src, errorCode);
    }
}

U_NAMESPACE_END

namespace {

UnicodeSet *makeSet(UProperty property, UErrorCode &errorCode) {
    if (U_FAILURE(errorCode)) { return nullptr; }
    LocalPointer<UnicodeSet> set(new UnicodeSet());
    if (set.isNull()) {
        errorCode = U_MEMORY_ALLOCATION_ERROR;
        return nullptr;
    }
    const UnicodeSet *inclusions =
        icu::CharacterProperties::getInclusionsForProperty(property, errorCode);
    if (U_FAILURE(errorCode)) { return nullptr; }
    int32_t numRanges = inclusions->getRangeCount();
    UChar32 startHasProperty = -1;

    for (int32_t i = 0; i < numRanges; ++i) {
        UChar32 rangeEnd = inclusions->getRangeEnd(i);
        for (UChar32 c = inclusions->getRangeStart(i); c <= rangeEnd; ++c) {
            // TODO: Get a UCharacterProperty.BinaryProperty to avoid the property dispatch.
            if (u_hasBinaryProperty(c, property)) {
                if (startHasProperty < 0) {
                    // Transition from false to true.
                    startHasProperty = c;
                }
            } else if (startHasProperty >= 0) {
                // Transition from true to false.
                set->add(startHasProperty, c - 1);
                startHasProperty = -1;
            }
        }
    }
    if (startHasProperty >= 0) {
        set->add(startHasProperty, 0x10FFFF);
    }
    set->freeze();
    return set.orphan();
}

UCPMap *makeMap(UProperty property, UErrorCode &errorCode) {
    if (U_FAILURE(errorCode)) { return nullptr; }
    uint32_t nullValue = property == UCHAR_SCRIPT ? USCRIPT_UNKNOWN : 0;
    icu::LocalUMutableCPTriePointer mutableTrie(
        umutablecptrie_open(nullValue, nullValue, &errorCode));
    const UnicodeSet *inclusions =
        icu::CharacterProperties::getInclusionsForProperty(property, errorCode);
    if (U_FAILURE(errorCode)) { return nullptr; }
    int32_t numRanges = inclusions->getRangeCount();
    UChar32 start = 0;
    uint32_t value = nullValue;

    for (int32_t i = 0; i < numRanges; ++i) {
        UChar32 rangeEnd = inclusions->getRangeEnd(i);
        for (UChar32 c = inclusions->getRangeStart(i); c <= rangeEnd; ++c) {
            // TODO: Get a UCharacterProperty.IntProperty to avoid the property dispatch.
            uint32_t nextValue = u_getIntPropertyValue(c, property);
            if (value != nextValue) {
                if (value != nullValue) {
                    umutablecptrie_setRange(mutableTrie.getAlias(), start, c - 1, value, &errorCode);
                }
                start = c;
                value = nextValue;
            }
        }
    }
    if (value != 0) {
        umutablecptrie_setRange(mutableTrie.getAlias(), start, 0x10FFFF, value, &errorCode);
    }

    UCPTrieType type;
    if (property == UCHAR_BIDI_CLASS || property == UCHAR_GENERAL_CATEGORY) {
        type = UCPTRIE_TYPE_FAST;
    } else {
        type = UCPTRIE_TYPE_SMALL;
    }
    UCPTrieValueWidth valueWidth;
    // TODO: UCharacterProperty.IntProperty
    int32_t max = u_getIntPropertyMaxValue(property);
    if (max <= 0xff) {
        valueWidth = UCPTRIE_VALUE_BITS_8;
    } else if (max <= 0xffff) {
        valueWidth = UCPTRIE_VALUE_BITS_16;
    } else {
        valueWidth = UCPTRIE_VALUE_BITS_32;
    }
    return reinterpret_cast<UCPMap *>(
        umutablecptrie_buildImmutable(mutableTrie.getAlias(), type, valueWidth, &errorCode));
}

}  // namespace

U_NAMESPACE_USE

U_CAPI const USet * U_EXPORT2
u_getBinaryPropertySet(UProperty property, UErrorCode *pErrorCode) {
    if (U_FAILURE(*pErrorCode)) { return nullptr; }
    if (property < 0 || UCHAR_BINARY_LIMIT <= property) {
        *pErrorCode = U_ILLEGAL_ARGUMENT_ERROR;
        return nullptr;
    }
    Mutex m(cpMutex());
    UnicodeSet *set = sets[property];
    if (set == nullptr) {
        sets[property] = set = makeSet(property, *pErrorCode);
    }
    if (U_FAILURE(*pErrorCode)) { return nullptr; }
    return set->toUSet();
}

U_CAPI const UCPMap * U_EXPORT2
u_getIntPropertyMap(UProperty property, UErrorCode *pErrorCode) {
    if (U_FAILURE(*pErrorCode)) { return nullptr; }
    if (property < UCHAR_INT_START || UCHAR_INT_LIMIT <= property) {
        *pErrorCode = U_ILLEGAL_ARGUMENT_ERROR;
        return nullptr;
    }
    Mutex m(cpMutex());
    UCPMap *map = maps[property - UCHAR_INT_START];
    if (map == nullptr) {
        maps[property - UCHAR_INT_START] = map = makeMap(property, *pErrorCode);
    }
    return map;
}
Commit	Line	Data
3d1f044b A	1	// © 2018 and later: Unicode, Inc. and others.
	2	// License & terms of use: http://www.unicode.org/copyright.html
	3
	4	// characterproperties.cpp
	5	// created: 2018sep03 Markus W. Scherer
	6
	7	#include "unicode/utypes.h"
	8	#include "unicode/localpointer.h"
	9	#include "unicode/uchar.h"
	10	#include "unicode/ucpmap.h"
	11	#include "unicode/ucptrie.h"
	12	#include "unicode/umutablecptrie.h"
	13	#include "unicode/uniset.h"
	14	#include "unicode/uscript.h"
	15	#include "unicode/uset.h"
	16	#include "cmemory.h"
	17	#include "mutex.h"
	18	#include "normalizer2impl.h"
	19	#include "uassert.h"
	20	#include "ubidi_props.h"
	21	#include "ucase.h"
	22	#include "ucln_cmn.h"
	23	#include "umutex.h"
	24	#include "uprops.h"
	25
	26	using icu::LocalPointer;
	27	#if !UCONFIG_NO_NORMALIZATION
	28	using icu::Normalizer2Factory;
	29	using icu::Normalizer2Impl;
	30	#endif
	31	using icu::UInitOnce;
	32	using icu::UnicodeSet;
	33
	34	namespace {
	35
	36	UBool U_CALLCONV characterproperties_cleanup();
	37
	38	constexpr int32_t NUM_INCLUSIONS = UPROPS_SRC_COUNT + UCHAR_INT_LIMIT - UCHAR_INT_START;
	39
	40	struct Inclusion {
	41	UnicodeSet *fSet = nullptr;
	42	UInitOnce fInitOnce = U_INITONCE_INITIALIZER;
	43	};
	44	Inclusion gInclusions[NUM_INCLUSIONS]; // cached getInclusions()
	45
	46	UnicodeSet *sets[UCHAR_BINARY_LIMIT] = {};
	47
	48	UCPMap *maps[UCHAR_INT_LIMIT - UCHAR_INT_START] = {};
	49
	50	icu::UMutex *cpMutex() {
	51	static icu::UMutex *m = STATIC_NEW(icu::UMutex);
	52	return m;
	53	}
	54
	55	//----------------------------------------------------------------
	56	// Inclusions list
	57	//----------------------------------------------------------------
	58
	59	// USetAdder implementation
	60	// Does not use uset.h to reduce code dependencies
	61	void U_CALLCONV
	62	_set_add(USet *set, UChar32 c) {
	63	((UnicodeSet *)set)->add(c);
	64	}
65
66	void U_CALLCONV
67	_set_addRange(USet *set, UChar32 start, UChar32 end) {
68	((UnicodeSet *)set)->add(start, end);
69	}
70
71	void U_CALLCONV
72	_set_addString(USet set, const UChar str, int32_t length) {
73	((UnicodeSet *)set)->add(icu::UnicodeString((UBool)(length<0), str, length));
74	}
75
76	UBool U_CALLCONV characterproperties_cleanup() {
77	for (Inclusion &in: gInclusions) {
78	delete in.fSet;
79	in.fSet = nullptr;
80	in.fInitOnce.reset();
81	}
82	for (int32_t i = 0; i < UPRV_LENGTHOF(sets); ++i) {
83	delete sets[i];
84	sets[i] = nullptr;
85	}
86	for (int32_t i = 0; i < UPRV_LENGTHOF(maps); ++i) {
87	ucptrie_close(reinterpret_cast<UCPTrie *>(maps[i]));
88	maps[i] = nullptr;
89	}
90	return TRUE;
91	}
92
93	void U_CALLCONV initInclusion(UPropertySource src, UErrorCode &errorCode) {
94	// This function is invoked only via umtx_initOnce().
95	U_ASSERT(0 <= src && src < UPROPS_SRC_COUNT);
96	if (src == UPROPS_SRC_NONE) {
97	errorCode = U_INTERNAL_PROGRAM_ERROR;
98	return;
99	}
100	U_ASSERT(gInclusions[src].fSet == nullptr);
101
102	LocalPointer<UnicodeSet> incl(new UnicodeSet());
103	if (incl.isNull()) {
104	errorCode = U_MEMORY_ALLOCATION_ERROR;
105	return;
106	}
107	USetAdder sa = {
108	(USet *)incl.getAlias(),
109	_set_add,
110	_set_addRange,
111	_set_addString,
112	nullptr, // don't need remove()
113	nullptr // don't need removeRange()
114	};
115
116	switch(src) {
117	case UPROPS_SRC_CHAR:
118	uchar_addPropertyStarts(&sa, &errorCode);
119	break;
120	case UPROPS_SRC_PROPSVEC:
121	upropsvec_addPropertyStarts(&sa, &errorCode);
122	break;
123	case UPROPS_SRC_CHAR_AND_PROPSVEC:
124	uchar_addPropertyStarts(&sa, &errorCode);
125	upropsvec_addPropertyStarts(&sa, &errorCode);
126	break;
127	#if !UCONFIG_NO_NORMALIZATION
128	case UPROPS_SRC_CASE_AND_NORM: {
129	const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
130	if(U_SUCCESS(errorCode)) {
131	impl->addPropertyStarts(&sa, errorCode);
132	}
133	ucase_addPropertyStarts(&sa, &errorCode);
134	break;
135	}
136	case UPROPS_SRC_NFC: {
137	const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
138	if(U_SUCCESS(errorCode)) {
139	impl->addPropertyStarts(&sa, errorCode);
140	}
141	break;
142	}
143	case UPROPS_SRC_NFKC: {
144	const Normalizer2Impl *impl=Normalizer2Factory::getNFKCImpl(errorCode);
145	if(U_SUCCESS(errorCode)) {
146	impl->addPropertyStarts(&sa, errorCode);
147	}
148	break;
149	}
150	case UPROPS_SRC_NFKC_CF: {
151	const Normalizer2Impl *impl=Normalizer2Factory::getNFKC_CFImpl(errorCode);
152	if(U_SUCCESS(errorCode)) {
153	impl->addPropertyStarts(&sa, errorCode);
154	}
155	break;
156	}
157	case UPROPS_SRC_NFC_CANON_ITER: {
158	const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
159	if(U_SUCCESS(errorCode)) {
160	impl->addCanonIterPropertyStarts(&sa, errorCode);
161	}
162	break;
163	}
164	#endif
165	case UPROPS_SRC_CASE:
166	ucase_addPropertyStarts(&sa, &errorCode);
167	break;
168	case UPROPS_SRC_BIDI:
169	ubidi_addPropertyStarts(&sa, &errorCode);
170	break;
171	case UPROPS_SRC_INPC:
172	case UPROPS_SRC_INSC:
173	case UPROPS_SRC_VO:
174	uprops_addPropertyStarts((UPropertySource)src, &sa, &errorCode);
175	break;
176	default:
177	errorCode = U_INTERNAL_PROGRAM_ERROR;
178	break;
179	}
180
181	if (U_FAILURE(errorCode)) {
182	return;
183	}
184	if (incl->isBogus()) {
185	errorCode = U_MEMORY_ALLOCATION_ERROR;
186	return;
187	}
188	// Compact for caching.
189	incl->compact();
190	gInclusions[src].fSet = incl.orphan();
191	ucln_common_registerCleanup(UCLN_COMMON_CHARACTERPROPERTIES, characterproperties_cleanup);
192	}
193
194	const UnicodeSet *getInclusionsForSource(UPropertySource src, UErrorCode &errorCode) {
195	if (U_FAILURE(errorCode)) { return nullptr; }
196	if (src < 0 \|\| UPROPS_SRC_COUNT <= src) {
197	errorCode = U_ILLEGAL_ARGUMENT_ERROR;
198	return nullptr;
199	}
200	Inclusion &i = gInclusions[src];
201	umtx_initOnce(i.fInitOnce, &initInclusion, src, errorCode);
202	return i.fSet;
203	}
204
205	void U_CALLCONV initIntPropInclusion(UProperty prop, UErrorCode &errorCode) {
206	// This function is invoked only via umtx_initOnce().
207	U_ASSERT(UCHAR_INT_START <= prop && prop < UCHAR_INT_LIMIT);
208	int32_t inclIndex = UPROPS_SRC_COUNT + prop - UCHAR_INT_START;
209	U_ASSERT(gInclusions[inclIndex].fSet == nullptr);
210	UPropertySource src = uprops_getSource(prop);
211	const UnicodeSet *incl = getInclusionsForSource(src, errorCode);
212	if (U_FAILURE(errorCode)) {
213	return;
214	}
215
216	LocalPointer<UnicodeSet> intPropIncl(new UnicodeSet(0, 0));
217	if (intPropIncl.isNull()) {
218	errorCode = U_MEMORY_ALLOCATION_ERROR;
219	return;
220	}
221	int32_t numRanges = incl->getRangeCount();
222	int32_t prevValue = 0;
223	for (int32_t i = 0; i < numRanges; ++i) {
224	UChar32 rangeEnd = incl->getRangeEnd(i);
225	for (UChar32 c = incl->getRangeStart(i); c <= rangeEnd; ++c) {
226	// TODO: Get a UCharacterProperty.IntProperty to avoid the property dispatch.
227	int32_t value = u_getIntPropertyValue(c, prop);
228	if (value != prevValue) {
229	intPropIncl->add(c);
230	prevValue = value;
231	}
232	}
233	}
234
235	if (intPropIncl->isBogus()) {
236	errorCode = U_MEMORY_ALLOCATION_ERROR;
237	return;
238	}
239	// Compact for caching.
240	intPropIncl->compact();
241	gInclusions[inclIndex].fSet = intPropIncl.orphan();
242	ucln_common_registerCleanup(UCLN_COMMON_CHARACTERPROPERTIES, characterproperties_cleanup);
243	}
244
245	} // namespace
246
247	U_NAMESPACE_BEGIN
248
249	const UnicodeSet *CharacterProperties::getInclusionsForProperty(
250	UProperty prop, UErrorCode &errorCode) {
251	if (U_FAILURE(errorCode)) { return nullptr; }
252	if (UCHAR_INT_START <= prop && prop < UCHAR_INT_LIMIT) {
253	int32_t inclIndex = UPROPS_SRC_COUNT + prop - UCHAR_INT_START;
254	Inclusion &i = gInclusions[inclIndex];
255	umtx_initOnce(i.fInitOnce, &initIntPropInclusion, prop, errorCode);
256	return i.fSet;
257	} else {
258	UPropertySource src = uprops_getSource(prop);
259	return getInclusionsForSource(src, errorCode);
260	}
261	}
262
263	U_NAMESPACE_END
264
265	namespace {
266
267	UnicodeSet *makeSet(UProperty property, UErrorCode &errorCode) {
268	if (U_FAILURE(errorCode)) { return nullptr; }
269	LocalPointer<UnicodeSet> set(new UnicodeSet());
270	if (set.isNull()) {
271	errorCode = U_MEMORY_ALLOCATION_ERROR;
272	return nullptr;
273	}
274	const UnicodeSet *inclusions =
275	icu::CharacterProperties::getInclusionsForProperty(property, errorCode);
276	if (U_FAILURE(errorCode)) { return nullptr; }
277	int32_t numRanges = inclusions->getRangeCount();
278	UChar32 startHasProperty = -1;
279
280	for (int32_t i = 0; i < numRanges; ++i) {
281	UChar32 rangeEnd = inclusions->getRangeEnd(i);
282	for (UChar32 c = inclusions->getRangeStart(i); c <= rangeEnd; ++c) {
283	// TODO: Get a UCharacterProperty.BinaryProperty to avoid the property dispatch.
284	if (u_hasBinaryProperty(c, property)) {
285	if (startHasProperty < 0) {
286	// Transition from false to true.
287	startHasProperty = c;
288	}
289	} else if (startHasProperty >= 0) {
290	// Transition from true to false.
291	set->add(startHasProperty, c - 1);
292	startHasProperty = -1;
293	}
294	}
295	}
296	if (startHasProperty >= 0) {
297	set->add(startHasProperty, 0x10FFFF);
298	}
299	set->freeze();
300	return set.orphan();
301	}
302
303	UCPMap *makeMap(UProperty property, UErrorCode &errorCode) {
304	if (U_FAILURE(errorCode)) { return nullptr; }
305	uint32_t nullValue = property == UCHAR_SCRIPT ? USCRIPT_UNKNOWN : 0;
306	icu::LocalUMutableCPTriePointer mutableTrie(
307	umutablecptrie_open(nullValue, nullValue, &errorCode));
308	const UnicodeSet *inclusions =
309	icu::CharacterProperties::getInclusionsForProperty(property, errorCode);
310	if (U_FAILURE(errorCode)) { return nullptr; }
311	int32_t numRanges = inclusions->getRangeCount();
312	UChar32 start = 0;
313	uint32_t value = nullValue;
314
315	for (int32_t i = 0; i < numRanges; ++i) {
316	UChar32 rangeEnd = inclusions->getRangeEnd(i);
317	for (UChar32 c = inclusions->getRangeStart(i); c <= rangeEnd; ++c) {
318	// TODO: Get a UCharacterProperty.IntProperty to avoid the property dispatch.
319	uint32_t nextValue = u_getIntPropertyValue(c, property);
320	if (value != nextValue) {
321	if (value != nullValue) {
322	umutablecptrie_setRange(mutableTrie.getAlias(), start, c - 1, value, &errorCode);
323	}
324	start = c;
325	value = nextValue;
326	}
327	}
328	}
329	if (value != 0) {
330	umutablecptrie_setRange(mutableTrie.getAlias(), start, 0x10FFFF, value, &errorCode);
331	}
332
333	UCPTrieType type;
334	if (property == UCHAR_BIDI_CLASS \|\| property == UCHAR_GENERAL_CATEGORY) {
335	type = UCPTRIE_TYPE_FAST;
336	} else {
337	type = UCPTRIE_TYPE_SMALL;
338	}
339	UCPTrieValueWidth valueWidth;
340	// TODO: UCharacterProperty.IntProperty
341	int32_t max = u_getIntPropertyMaxValue(property);
342	if (max <= 0xff) {
343	valueWidth = UCPTRIE_VALUE_BITS_8;
344	} else if (max <= 0xffff) {
345	valueWidth = UCPTRIE_VALUE_BITS_16;
346	} else {
347	valueWidth = UCPTRIE_VALUE_BITS_32;
348	}
349	return reinterpret_cast<UCPMap *>(
350	umutablecptrie_buildImmutable(mutableTrie.getAlias(), type, valueWidth, &errorCode));
351	}
352
353	} // namespace
354
355	U_NAMESPACE_USE
356
357	U_CAPI const USet * U_EXPORT2
358	u_getBinaryPropertySet(UProperty property, UErrorCode *pErrorCode) {
359	if (U_FAILURE(*pErrorCode)) { return nullptr; }
360	if (property < 0 \|\| UCHAR_BINARY_LIMIT <= property) {
361	*pErrorCode = U_ILLEGAL_ARGUMENT_ERROR;
362	return nullptr;
363	}
364	Mutex m(cpMutex());
365	UnicodeSet *set = sets[property];
366	if (set == nullptr) {
367	sets[property] = set = makeSet(property, *pErrorCode);
368	}
369	if (U_FAILURE(*pErrorCode)) { return nullptr; }
370	return set->toUSet();
371	}
372
373	U_CAPI const UCPMap * U_EXPORT2
374	u_getIntPropertyMap(UProperty property, UErrorCode *pErrorCode) {
375	if (U_FAILURE(*pErrorCode)) { return nullptr; }
376	if (property < UCHAR_INT_START \|\| UCHAR_INT_LIMIT <= property) {
377	*pErrorCode = U_ILLEGAL_ARGUMENT_ERROR;
378	return nullptr;
379	}
380	Mutex m(cpMutex());
381	UCPMap *map = maps[property - UCHAR_INT_START];
382	if (map == nullptr) {
383	maps[property - UCHAR_INT_START] = map = makeMap(property, *pErrorCode);
384	}
385	return map;
386	}