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godot/thirdparty/icu4c/common/characterproperties.cpp

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// © 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;
//----------------------------------------------------------------
// 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;
}
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