| File: | out/../deps/icu-small/source/i18n/number_utils.cpp |
| Warning: | line 72, column 13 Value stored to 'patternKey' is never read |
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| 1 | // © 2018 and later: Unicode, Inc. and others. |
| 2 | // License & terms of use: http://www.unicode.org/copyright.html |
| 3 | |
| 4 | #include "unicode/utypes.h" |
| 5 | |
| 6 | #if !UCONFIG_NO_FORMATTING0 |
| 7 | |
| 8 | // Allow implicit conversion from char16_t* to UnicodeString for this file: |
| 9 | // Helpful in toString methods and elsewhere. |
| 10 | #define UNISTR_FROM_STRING_EXPLICIT |
| 11 | |
| 12 | #include <stdlib.h> |
| 13 | #include <cmath> |
| 14 | #include "number_decnum.h" |
| 15 | #include "number_types.h" |
| 16 | #include "number_utils.h" |
| 17 | #include "charstr.h" |
| 18 | #include "decContext.h" |
| 19 | #include "decNumber.h" |
| 20 | #include "double-conversion.h" |
| 21 | #include "fphdlimp.h" |
| 22 | #include "uresimp.h" |
| 23 | #include "ureslocs.h" |
| 24 | |
| 25 | using namespace icu; |
| 26 | using namespace icu::number; |
| 27 | using namespace icu::number::impl; |
| 28 | |
| 29 | using icu::double_conversion::DoubleToStringConverter; |
| 30 | |
| 31 | |
| 32 | namespace { |
| 33 | |
| 34 | const char16_t* |
| 35 | doGetPattern(UResourceBundle* res, const char* nsName, const char* patternKey, UErrorCode& publicStatus, |
| 36 | UErrorCode& localStatus) { |
| 37 | // Construct the path into the resource bundle |
| 38 | CharString key; |
| 39 | key.append("NumberElements/", publicStatus); |
| 40 | key.append(nsName, publicStatus); |
| 41 | key.append("/patterns/", publicStatus); |
| 42 | key.append(patternKey, publicStatus); |
| 43 | if (U_FAILURE(publicStatus)) { |
| 44 | return u""; |
| 45 | } |
| 46 | return ures_getStringByKeyWithFallbackures_getStringByKeyWithFallback_71(res, key.data(), nullptr, &localStatus); |
| 47 | } |
| 48 | |
| 49 | } |
| 50 | |
| 51 | |
| 52 | const char16_t* utils::getPatternForStyle(const Locale& locale, const char* nsName, CldrPatternStyle style, |
| 53 | UErrorCode& status) { |
| 54 | const char* patternKey; |
| 55 | switch (style) { |
| 56 | case CLDR_PATTERN_STYLE_DECIMAL: |
| 57 | patternKey = "decimalFormat"; |
| 58 | break; |
| 59 | case CLDR_PATTERN_STYLE_CURRENCY: |
| 60 | patternKey = "currencyFormat"; |
| 61 | break; |
| 62 | case CLDR_PATTERN_STYLE_ACCOUNTING: |
| 63 | patternKey = "accountingFormat"; |
| 64 | break; |
| 65 | case CLDR_PATTERN_STYLE_PERCENT: |
| 66 | patternKey = "percentFormat"; |
| 67 | break; |
| 68 | case CLDR_PATTERN_STYLE_SCIENTIFIC: |
| 69 | patternKey = "scientificFormat"; |
| 70 | break; |
| 71 | default: |
| 72 | patternKey = "decimalFormat"; // silence compiler error |
Value stored to 'patternKey' is never read | |
| 73 | UPRV_UNREACHABLE_EXITabort(); |
| 74 | } |
| 75 | LocalUResourceBundlePointer res(ures_openures_open_71(nullptr, locale.getName(), &status)); |
| 76 | if (U_FAILURE(status)) { return u""; } |
| 77 | |
| 78 | // Attempt to get the pattern with the native numbering system. |
| 79 | UErrorCode localStatus = U_ZERO_ERROR; |
| 80 | const char16_t* pattern; |
| 81 | pattern = doGetPattern(res.getAlias(), nsName, patternKey, status, localStatus); |
| 82 | if (U_FAILURE(status)) { return u""; } |
| 83 | |
| 84 | // Fall back to latn if native numbering system does not have the right pattern |
| 85 | if (U_FAILURE(localStatus) && uprv_strcmp("latn", nsName):: strcmp("latn", nsName) != 0) { |
| 86 | localStatus = U_ZERO_ERROR; |
| 87 | pattern = doGetPattern(res.getAlias(), "latn", patternKey, status, localStatus); |
| 88 | if (U_FAILURE(status)) { return u""; } |
| 89 | } |
| 90 | |
| 91 | return pattern; |
| 92 | } |
| 93 | |
| 94 | |
| 95 | DecNum::DecNum() { |
| 96 | uprv_decContextDefaultuprv_decContextDefault_71(&fContext, DEC_INIT_BASE0); |
| 97 | uprv_decContextSetRoundinguprv_decContextSetRounding_71(&fContext, DEC_ROUND_HALF_EVEN); |
| 98 | fContext.traps = 0; // no traps, thank you (what does this even mean?) |
| 99 | } |
| 100 | |
| 101 | DecNum::DecNum(const DecNum& other, UErrorCode& status) |
| 102 | : fContext(other.fContext) { |
| 103 | // Allocate memory for the new DecNum. |
| 104 | U_ASSERT(fContext.digits == other.fData.getCapacity())(void)0; |
| 105 | if (fContext.digits > kDefaultDigits) { |
| 106 | void* p = fData.resize(fContext.digits, 0); |
| 107 | if (p == nullptr) { |
| 108 | status = U_MEMORY_ALLOCATION_ERROR; |
| 109 | return; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | // Copy the data from the old DecNum to the new one. |
| 114 | uprv_memcpy(fData.getAlias(), other.fData.getAlias(), sizeof(decNumber))do { clang diagnostic push
clang diagnostic ignored "-Waddress" (void)0; (void)0; clang diagnostic pop :: memcpy(fData.getAlias (), other.fData.getAlias(), sizeof(decNumber)); } while (false ); |
| 115 | uprv_memcpy(fData.getArrayStart(),do { clang diagnostic push
clang diagnostic ignored "-Waddress" (void)0; (void)0; clang diagnostic pop :: memcpy(fData.getArrayStart (), other.fData.getArrayStart(), other.fData.getArrayLimit() - other.fData.getArrayStart()); } while (false) |
| 116 | other.fData.getArrayStart(),do { clang diagnostic push
clang diagnostic ignored "-Waddress" (void)0; (void)0; clang diagnostic pop :: memcpy(fData.getArrayStart (), other.fData.getArrayStart(), other.fData.getArrayLimit() - other.fData.getArrayStart()); } while (false) |
| 117 | other.fData.getArrayLimit() - other.fData.getArrayStart())do { clang diagnostic push
clang diagnostic ignored "-Waddress" (void)0; (void)0; clang diagnostic pop :: memcpy(fData.getArrayStart (), other.fData.getArrayStart(), other.fData.getArrayLimit() - other.fData.getArrayStart()); } while (false); |
| 118 | } |
| 119 | |
| 120 | void DecNum::setTo(StringPiece str, UErrorCode& status) { |
| 121 | // We need NUL-terminated for decNumber; CharString guarantees this, but not StringPiece. |
| 122 | CharString cstr(str, status); |
| 123 | if (U_FAILURE(status)) { return; } |
| 124 | _setTo(cstr.data(), str.length(), status); |
| 125 | } |
| 126 | |
| 127 | void DecNum::setTo(const char* str, UErrorCode& status) { |
| 128 | _setTo(str, static_cast<int32_t>(uprv_strlen(str):: strlen(str)), status); |
| 129 | } |
| 130 | |
| 131 | void DecNum::setTo(double d, UErrorCode& status) { |
| 132 | // Need to check for NaN and Infinity before going into DoubleToStringConverter |
| 133 | if (std::isnan(d) != 0 || std::isfinite(d) == 0) { |
| 134 | status = U_UNSUPPORTED_ERROR; |
| 135 | return; |
| 136 | } |
| 137 | |
| 138 | // First convert from double to string, then string to DecNum. |
| 139 | // Allocate enough room for: all digits, "E-324", and NUL-terminator. |
| 140 | char buffer[DoubleToStringConverter::kBase10MaximalLength + 6]; |
| 141 | bool sign; // unused; always positive |
| 142 | int32_t length; |
| 143 | int32_t point; |
| 144 | DoubleToStringConverter::DoubleToAscii( |
| 145 | d, |
| 146 | DoubleToStringConverter::DtoaMode::SHORTEST, |
| 147 | 0, |
| 148 | buffer, |
| 149 | sizeof(buffer), |
| 150 | &sign, |
| 151 | &length, |
| 152 | &point |
| 153 | ); |
| 154 | |
| 155 | // Read initial result as a string. |
| 156 | _setTo(buffer, length, status); |
| 157 | |
| 158 | // Set exponent and bitmask. Note that DoubleToStringConverter does not do negatives. |
| 159 | fData.getAlias()->exponent += point - length; |
| 160 | fData.getAlias()->bits |= static_cast<uint8_t>(std::signbit(d) ? DECNEG0x80 : 0); |
| 161 | } |
| 162 | |
| 163 | void DecNum::_setTo(const char* str, int32_t maxDigits, UErrorCode& status) { |
| 164 | if (maxDigits > kDefaultDigits) { |
| 165 | fData.resize(maxDigits, 0); |
| 166 | fContext.digits = maxDigits; |
| 167 | } else { |
| 168 | fContext.digits = kDefaultDigits; |
| 169 | } |
| 170 | |
| 171 | static_assert(DECDPUN1 == 1, "Assumes that DECDPUN is set to 1"); |
| 172 | uprv_decNumberFromStringuprv_decNumberFromString_71(fData.getAlias(), str, &fContext); |
| 173 | |
| 174 | // Check for invalid syntax and set the corresponding error code. |
| 175 | if ((fContext.status & DEC_Conversion_syntax0x00000001) != 0) { |
| 176 | status = U_DECIMAL_NUMBER_SYNTAX_ERROR; |
| 177 | return; |
| 178 | } else if (fContext.status != 0) { |
| 179 | // Not a syntax error, but some other error, like an exponent that is too large. |
| 180 | status = U_UNSUPPORTED_ERROR; |
| 181 | return; |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | void |
| 186 | DecNum::setTo(const uint8_t* bcd, int32_t length, int32_t scale, bool isNegative, UErrorCode& status) { |
| 187 | if (length > kDefaultDigits) { |
| 188 | fData.resize(length, 0); |
| 189 | fContext.digits = length; |
| 190 | } else { |
| 191 | fContext.digits = kDefaultDigits; |
| 192 | } |
| 193 | |
| 194 | // "digits is of type int32_t, and must have a value in the range 1 through 999,999,999." |
| 195 | if (length < 1 || length > 999999999) { |
| 196 | // Too large for decNumber |
| 197 | status = U_UNSUPPORTED_ERROR; |
| 198 | return; |
| 199 | } |
| 200 | // "The exponent field holds the exponent of the number. Its range is limited by the requirement that |
| 201 | // "the range of the adjusted exponent of the number be balanced and fit within a whole number of |
| 202 | // "decimal digits (in this implementation, be –999,999,999 through +999,999,999). The adjusted |
| 203 | // "exponent is the exponent that would result if the number were expressed with a single digit before |
| 204 | // "the decimal point, and is therefore given by exponent+digits-1." |
| 205 | if (scale > 999999999 - length + 1 || scale < -999999999 - length + 1) { |
| 206 | // Too large for decNumber |
| 207 | status = U_UNSUPPORTED_ERROR; |
| 208 | return; |
| 209 | } |
| 210 | |
| 211 | fData.getAlias()->digits = length; |
| 212 | fData.getAlias()->exponent = scale; |
| 213 | fData.getAlias()->bits = static_cast<uint8_t>(isNegative ? DECNEG0x80 : 0); |
| 214 | uprv_decNumberSetBCDuprv_decNumberSetBCD_71(fData, bcd, static_cast<uint32_t>(length)); |
| 215 | if (fContext.status != 0) { |
| 216 | // Some error occurred while constructing the decNumber. |
| 217 | status = U_INTERNAL_PROGRAM_ERROR; |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | void DecNum::normalize() { |
| 222 | uprv_decNumberReduceuprv_decNumberReduce_71(fData, fData, &fContext); |
| 223 | } |
| 224 | |
| 225 | void DecNum::multiplyBy(const DecNum& rhs, UErrorCode& status) { |
| 226 | uprv_decNumberMultiplyuprv_decNumberMultiply_71(fData, fData, rhs.fData, &fContext); |
| 227 | if (fContext.status != 0) { |
| 228 | status = U_INTERNAL_PROGRAM_ERROR; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | void DecNum::divideBy(const DecNum& rhs, UErrorCode& status) { |
| 233 | uprv_decNumberDivideuprv_decNumberDivide_71(fData, fData, rhs.fData, &fContext); |
| 234 | if ((fContext.status & DEC_Inexact0x00000020) != 0) { |
| 235 | // Ignore. |
| 236 | } else if (fContext.status != 0) { |
| 237 | status = U_INTERNAL_PROGRAM_ERROR; |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | bool DecNum::isNegative() const { |
| 242 | return decNumberIsNegative(fData.getAlias())(((fData.getAlias())->bits&0x80)!=0); |
| 243 | } |
| 244 | |
| 245 | bool DecNum::isZero() const { |
| 246 | return decNumberIsZero(fData.getAlias())(*(fData.getAlias())->lsu==0 && (fData.getAlias()) ->digits==1 && (((fData.getAlias())->bits&( 0x40|0x20|0x10))==0)); |
| 247 | } |
| 248 | |
| 249 | bool DecNum::isSpecial() const { |
| 250 | return decNumberIsSpecial(fData.getAlias())(((fData.getAlias())->bits&(0x40|0x20|0x10))!=0); |
| 251 | } |
| 252 | |
| 253 | bool DecNum::isInfinity() const { |
| 254 | return decNumberIsInfinite(fData.getAlias())(((fData.getAlias())->bits&0x40)!=0); |
| 255 | } |
| 256 | |
| 257 | bool DecNum::isNaN() const { |
| 258 | return decNumberIsNaN(fData.getAlias())(((fData.getAlias())->bits&(0x20|0x10))!=0); |
| 259 | } |
| 260 | |
| 261 | void DecNum::toString(ByteSink& output, UErrorCode& status) const { |
| 262 | if (U_FAILURE(status)) { |
| 263 | return; |
| 264 | } |
| 265 | // "string must be at least dn->digits+14 characters long" |
| 266 | int32_t minCapacity = fData.getAlias()->digits + 14; |
| 267 | MaybeStackArray<char, 30> buffer(minCapacity, status); |
| 268 | if (U_FAILURE(status)) { |
| 269 | return; |
| 270 | } |
| 271 | uprv_decNumberToStringuprv_decNumberToString_71(fData, buffer.getAlias()); |
| 272 | output.Append(buffer.getAlias(), static_cast<int32_t>(uprv_strlen(buffer.getAlias()):: strlen(buffer.getAlias()))); |
| 273 | } |
| 274 | |
| 275 | #endif /* #if !UCONFIG_NO_FORMATTING */ |