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rapidjson/test/perftest/misctest.cpp

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// Tencent is pleased to support the open source community by making RapidJSON available.
//
// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
//
// Licensed under the MIT License (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
//
// http://opensource.org/licenses/MIT
//
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
#include "perftest.h"
#if TEST_MISC
#define __STDC_FORMAT_MACROS
#include "rapidjson/stringbuffer.h"
#define protected public
#include "rapidjson/writer.h"
#undef private
class Misc : public PerfTest {
};
// Copyright (c) 2008-2010 Bjoern Hoehrmann <bjoern@hoehrmann.de>
// See http://bjoern.hoehrmann.de/utf-8/decoder/dfa/ for details.
#define UTF8_ACCEPT 0
#define UTF8_REJECT 12
static const unsigned char utf8d[] = {
// The first part of the table maps bytes to character classes that
// to reduce the size of the transition table and create bitmasks.
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
8,8,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
10,3,3,3,3,3,3,3,3,3,3,3,3,4,3,3, 11,6,6,6,5,8,8,8,8,8,8,8,8,8,8,8,
// The second part is a transition table that maps a combination
// of a state of the automaton and a character class to a state.
0,12,24,36,60,96,84,12,12,12,48,72, 12,12,12,12,12,12,12,12,12,12,12,12,
12, 0,12,12,12,12,12, 0,12, 0,12,12, 12,24,12,12,12,12,12,24,12,24,12,12,
12,12,12,12,12,12,12,24,12,12,12,12, 12,24,12,12,12,12,12,12,12,24,12,12,
12,12,12,12,12,12,12,36,12,36,12,12, 12,36,12,12,12,12,12,36,12,36,12,12,
12,36,12,12,12,12,12,12,12,12,12,12,
};
static unsigned inline decode(unsigned* state, unsigned* codep, unsigned byte) {
unsigned type = utf8d[byte];
*codep = (*state != UTF8_ACCEPT) ?
(byte & 0x3fu) | (*codep << 6) :
(0xff >> type) & (byte);
*state = utf8d[256 + *state + type];
return *state;
}
static bool IsUTF8(unsigned char* s) {
unsigned codepoint, state = 0;
while (*s)
decode(&state, &codepoint, *s++);
return state == UTF8_ACCEPT;
}
TEST_F(Misc, Hoehrmann_IsUTF8) {
for (size_t i = 0; i < kTrialCount; i++) {
EXPECT_TRUE(IsUTF8((unsigned char*)json_));
}
}
////////////////////////////////////////////////////////////////////////////////
// CountDecimalDigit: Count number of decimal places
inline unsigned CountDecimalDigit_naive(unsigned n) {
unsigned count = 1;
while (n >= 10) {
n /= 10;
count++;
}
return count;
}
inline unsigned CountDecimalDigit_enroll4(unsigned n) {
unsigned count = 1;
while (n >= 10000) {
n /= 10000u;
count += 4;
}
if (n < 10) return count;
if (n < 100) return count + 1;
if (n < 1000) return count + 2;
return count + 3;
}
inline unsigned CountDecimalDigit64_enroll4(uint64_t n) {
unsigned count = 1;
while (n >= 10000) {
n /= 10000u;
count += 4;
}
if (n < 10) return count;
if (n < 100) return count + 1;
if (n < 1000) return count + 2;
return count + 3;
}
inline unsigned CountDecimalDigit_fast(unsigned n) {
static const uint32_t powers_of_10[] = {
0,
10,
100,
1000,
10000,
100000,
1000000,
10000000,
100000000,
1000000000
};
#if defined(_M_IX86) || defined(_M_X64)
unsigned long i = 0;
_BitScanReverse(&i, n | 1);
uint32_t t = (i + 1) * 1233 >> 12;
#elif defined(__GNUC__)
uint32_t t = (32 - __builtin_clz(n | 1)) * 1233 >> 12;
#else
#error
#endif
return t - (n < powers_of_10[t]) + 1;
}
inline unsigned CountDecimalDigit64_fast(uint64_t n) {
static const uint64_t powers_of_10[] = {
0,
10,
100,
1000,
10000,
100000,
1000000,
10000000,
100000000,
1000000000,
10000000000,
100000000000,
1000000000000,
10000000000000,
100000000000000,
1000000000000000,
10000000000000000,
100000000000000000,
1000000000000000000,
10000000000000000000U
};
#if defined(_M_IX86)
uint64_t m = n | 1;
unsigned long i = 0;
if (_BitScanReverse(&i, m >> 32))
i += 32;
else
_BitScanReverse(&i, m & 0xFFFFFFFF);
uint32_t t = (i + 1) * 1233 >> 12;
#elif defined(_M_X64)
unsigned long i = 0;
_BitScanReverse64(&i, n | 1);
uint32_t t = (i + 1) * 1233 >> 12;
#elif defined(__GNUC__)
uint32_t t = (64 - __builtin_clzll(n | 1)) * 1233 >> 12;
#else
#error
#endif
return t - (n < powers_of_10[t]) + 1;
}
#if 0
// Exhaustive, very slow
TEST_F(Misc, CountDecimalDigit_Verify) {
unsigned i = 0;
do {
if (i % (65536 * 256) == 0)
printf("%u\n", i);
ASSERT_EQ(CountDecimalDigit_enroll4(i), CountDecimalDigit_fast(i));
i++;
} while (i != 0);
}
static const unsigned kDigits10Trial = 1000000000u;
TEST_F(Misc, CountDecimalDigit_naive) {
unsigned sum = 0;
for (unsigned i = 0; i < kDigits10Trial; i++)
sum += CountDecimalDigit_naive(i);
printf("%u\n", sum);
}
TEST_F(Misc, CountDecimalDigit_enroll4) {
unsigned sum = 0;
for (unsigned i = 0; i < kDigits10Trial; i++)
sum += CountDecimalDigit_enroll4(i);
printf("%u\n", sum);
}
TEST_F(Misc, CountDecimalDigit_fast) {
unsigned sum = 0;
for (unsigned i = 0; i < kDigits10Trial; i++)
sum += CountDecimalDigit_fast(i);
printf("%u\n", sum);
}
#endif
TEST_F(Misc, CountDecimalDigit64_VerifyFast) {
uint64_t i = 1, j;
do {
//printf("%" PRIu64 "\n", i);
ASSERT_EQ(CountDecimalDigit64_enroll4(i), CountDecimalDigit64_fast(i));
j = i;
i *= 3;
} while (j < i);
}
////////////////////////////////////////////////////////////////////////////////
// integer-to-string conversion
// https://gist.github.com/anonymous/7179097
static const int randval[] ={
936116, 369532, 453755, -72860, 209713, 268347, 435278, -360266, -416287, -182064,
-644712, 944969, 640463, -366588, 471577, -69401, -744294, -505829, 923883, 831785,
-601136, -636767, -437054, 591718, 100758, 231907, -719038, 973540, -605220, 506659,
-871653, 462533, 764843, -919138, 404305, -630931, -288711, -751454, -173726, -718208,
432689, -281157, 360737, 659827, 19174, -376450, 769984, -858198, 439127, 734703,
-683426, 7, 386135, 186997, -643900, -744422, -604708, -629545, 42313, -933592,
-635566, 182308, 439024, -367219, -73924, -516649, 421935, -470515, 413507, -78952,
-427917, -561158, 737176, 94538, 572322, 405217, 709266, -357278, -908099, -425447,
601119, 750712, -862285, -177869, 900102, 384877, 157859, -641680, 503738, -702558,
278225, 463290, 268378, -212840, 580090, 347346, -473985, -950968, -114547, -839893,
-738032, -789424, 409540, 493495, 432099, 119755, 905004, -174834, 338266, 234298,
74641, -965136, -754593, 685273, 466924, 920560, 385062, 796402, -67229, 994864,
376974, 299869, -647540, -128724, 469890, -163167, -547803, -743363, 486463, -621028,
612288, 27459, -514224, 126342, -66612, 803409, -777155, -336453, -284002, 472451,
342390, -163630, 908356, -456147, -825607, 268092, -974715, 287227, 227890, -524101,
616370, -782456, 922098, -624001, -813690, 171605, -192962, 796151, 707183, -95696,
-23163, -721260, 508892, 430715, 791331, 482048, -996102, 863274, 275406, -8279,
-556239, -902076, 268647, -818565, 260069, -798232, -172924, -566311, -806503, -885992,
813969, -78468, 956632, 304288, 494867, -508784, 381751, 151264, 762953, 76352,
594902, 375424, 271700, -743062, 390176, 924237, 772574, 676610, 435752, -153847,
3959, -971937, -294181, -538049, -344620, -170136, 19120, -703157, 868152, -657961,
-818631, 219015, -872729, -940001, -956570, 880727, -345910, 942913, -942271, -788115,
225294, 701108, -517736, -416071, 281940, 488730, 942698, 711494, 838382, -892302,
-533028, 103052, 528823, 901515, 949577, 159364, 718227, -241814, -733661, -462928,
-495829, 165170, 513580, -629188, -509571, -459083, 198437, 77198, -644612, 811276,
-422298, -860842, -52584, 920369, 686424, -530667, -243476, 49763, 345866, -411960,
-114863, 470810, -302860, 683007, -509080, 2, -174981, -772163, -48697, 447770,
-268246, 213268, 269215, 78810, -236340, -639140, -864323, 505113, -986569, -325215,
541859, 163070, -819998, -645161, -583336, 573414, 696417, -132375, 3, -294501,
320435, 682591, 840008, 351740, 426951, 609354, 898154, -943254, 227321, -859793,
-727993, 44137, -497965, -782239, 14955, -746080, -243366, 9837, -233083, 606507,
-995864, -615287, -994307, 602715, 770771, -315040, 610860, 446102, -307120, 710728,
-590392, -230474, -762625, -637525, 134963, -202700, -766902, -985541, 218163, 682009,
926051, 525156, -61195, 403211, -810098, 245539, -431733, 179998, -806533, 745943,
447597, 131973, -187130, 826019, 286107, -937230, -577419, 20254, 681802, -340500,
323080, 266283, -667617, 309656, 416386, 611863, 759991, -534257, 523112, -634892,
-169913, -204905, -909867, -882185, -944908, 741811, -717675, 967007, -317396, 407230,
-412805, 792905, 994873, 744793, -456797, 713493, 355232, 116900, -945199, 880539,
342505, -580824, -262273, 982968, -349497, -735488, 311767, -455191, 570918, 389734,
-958386, 10262, -99267, 155481, 304210, 204724, 704367, -144893, -233664, -671441,
896849, 408613, 762236, 322697, 981321, 688476, 13663, -970704, -379507, 896412,
977084, 348869, 875948, 341348, 318710, 512081, 6163, 669044, 833295, 811883,
708756, -802534, -536057, 608413, -389625, -694603, 541106, -110037, 720322, -540581,
645420, 32980, 62442, 510157, -981870, -87093, -325960, -500494, -718291, -67889,
991501, 374804, 769026, -978869, 294747, 714623, 413327, -199164, 671368, 804789,
-362507, 798196, -170790, -568895, -869379, 62020, -316693, -837793, 644994, -39341,
-417504, -243068, -957756, 99072, 622234, -739992, 225668, 8863, -505910, 82483,
-559244, 241572, 1315, -36175, -54990, 376813, -11, 162647, -688204, -486163,
-54934, -197470, 744223, -762707, 732540, 996618, 351561, -445933, -898491, 486531,
456151, 15276, 290186, -817110, -52995, 313046, -452533, -96267, 94470, -500176,
-818026, -398071, -810548, -143325, -819741, 1338, -897676, -101577, -855445, 37309,
285742, 953804, -777927, -926962, -811217, -936744, -952245, -802300, -490188, -964953,
-552279, 329142, -570048, -505756, 682898, -381089, -14352, 175138, 152390, -582268,
-485137, 717035, 805329, 239572, -730409, 209643, -184403, -385864, 675086, 819648,
629058, -527109, -488666, -171981, 532788, 552441, 174666, 984921, 766514, 758787,
716309, 338801, -978004, -412163, 876079, -734212, 789557, -160491, -522719, 56644,
-991, -286038, -53983, 663740, 809812, 919889, -717502, -137704, 220511, 184396,
-825740, -588447, 430870, 124309, 135956, 558662, -307087, -788055, -451328, 812260,
931601, 324347, -482989, -117858, -278861, 189068, -172774, 929057, 293787, 198161,
-342386, -47173, 906555, -759955, -12779, 777604, -97869, 899320, 927486, -25284,
-848550, 259450, -485856, -17820, 88, 171400, 235492, -326783, -340793, 886886,
112428, -246280, 5979, 648444, -114982, 991013, -56489, -9497, 419706, 632820,
-341664, 393926, -848977, -22538, 257307, 773731, -905319, 491153, 734883, -868212,
-951053, 644458, -580758, 764735, 584316, 297077, 28852, -397710, -953669, 201772,
879050, -198237, -588468, 448102, -116837, 770007, -231812, 642906, -582166, -885828,
9, 305082, -996577, 303559, 75008, -772956, -447960, 599825, -295552, 870739,
-386278, -950300, 485359, -457081, 629461, -850276, 550496, -451755, -620841, -11766,
-950137, 832337, 28711, -273398, -507197, 91921, -271360, -705991, -753220, -388968,
967945, 340434, -320883, -662793, -554617, -574568, 477946, -6148, -129519, 689217,
920020, -656315, -974523, -212525, 80921, -612532, 645096, 545655, 655713, -591631,
-307385, -816688, -618823, -113713, 526430, 673063, 735916, -809095, -850417, 639004,
432281, -388185, 270708, 860146, -39902, -786157, -258180, -246169, -966720, -264957,
548072, -306010, -57367, -635665, 933824, 70553, -989936, -488741, 72411, -452509,
529831, 956277, 449019, -577850, -360986, -803418, 48833, 296073, 203430, 609591,
715483, 470964, 658106, -718254, -96424, 790163, 334739, 181070, -373578, 5,
-435088, 329841, 330939, -256602, 394355, 912412, 231910, 927278, -661933, 788539,
-769664, -893274, -96856, 298205, 901043, -608122, -527430, 183618, -553963, -35246,
-393924, 948832, -483198, 594501, 35460, -407007, 93494, -336881, -634072, 984205,
-812161, 944664, -31062, 753872, 823933, -69566, 50445, 290147, 85134, 34706,
551902, 405202, -991246, -84642, 154341, 316432, -695101, -651588, -5030, 137564,
-294665, 332541, 528307, -90572, -344923, 523766, -758498, -968047, 339028, 494578,
593129, -725773, 31834, -718406, -208638, 159665, -2043, 673344, -442767, 75816,
755442, 769257, -158730, -410272, 691688, 589550, -878398, -184121, 460679, 346312,
294163, -544602, 653308, 254167, -276979, 52073, -892684, 887653, -41222, 983065,
-68258, -408799, -99069, -674069, -863635, -32890, 622757, -743862, 40872, -4837,
-967228, 522370, -903951, -818669, 524459, 514702, 925801, 20007, -299229, 579348,
626021, 430089, 348139, -562692, -607728, -130606, -928451, -424793, -458647, -448892,
-312230, 143337, 109746, 880042, -339658, -785614, 938995, 540916, 118429, 661351,
-402967, 404729, -40918, -976535, 743230, 713110, 440182, -381314, -499252, 74613,
193652, 912717, 491323, 583633, 324691, 459397, 281253, 195540, -2764, -888651,
892449, 132663, -478373, -430002, -314551, 527826, 247165, 557966, 554778, 481531,
-946634, 431685, -769059, -348371, 174046, 184597, -354867, 584422, 227390, -850397,
-542924, -849093, -737769, 325359, 736314, 269101, 767940, 674809, 81413, -447458,
445076, 189072, 906218, 502688, -718476, -863827, -731381, 100660, 623249, 710008,
572060, 922203, 685740, 55096, 263394, -243695, -353910, -516788, 388471, 455165,
844103, -643772, 363976, 268875, -899450, 104470, 104029, -238874, -274659, 732969,
-676443, 953291, -916289, -861849, -242344, 958083, -479593, -970395, 799831, 277841,
-243236, -283462, -201510, 166263, -259105, -575706, 878926, 891064, 895297, 655262,
-34807, -809833, -89281, 342585, 554920, 1, 902141, -333425, 139703, 852318,
-618438, 329498, -932596, -692836, -513372, 733656, -523411, 85779, 500478, -682697,
-502836, 138776, 156341, -420037, -557964, -556378, 710993, -50383, -877159, 916334,
132996, 583516, -603392, -111615, -12288, -780214, 476780, 123327, 137607, 519956,
745837, 17358, -158581, -53490
};
static const size_t randvalCount = sizeof(randval) / sizeof(randval[0]);
static const size_t kItoaTrialCount = 10000;
static const char digits[201] =
"0001020304050607080910111213141516171819"
"2021222324252627282930313233343536373839"
"4041424344454647484950515253545556575859"
"6061626364656667686970717273747576777879"
"8081828384858687888990919293949596979899";
// Prevent code being optimized out
//#define OUTPUT_LENGTH(length) printf("", length)
#define OUTPUT_LENGTH(length) printf("%u\n", (unsigned)length)
template<typename OutputStream>
class Writer1 {
public:
Writer1() : os_() {}
Writer1(OutputStream& os) : os_(&os) {}
void Reset(OutputStream& os) {
os_ = &os;
}
bool WriteInt(int i) {
if (i < 0) {
os_->Put('-');
i = -i;
}
return WriteUint((unsigned)i);
}
bool WriteUint(unsigned u) {
char buffer[10];
char *p = buffer;
do {
*p++ = char(u % 10) + '0';
u /= 10;
} while (u > 0);
do {
--p;
os_->Put(*p);
} while (p != buffer);
return true;
}
bool WriteInt64(int64_t i64) {
if (i64 < 0) {
os_->Put('-');
i64 = -i64;
}
WriteUint64((uint64_t)i64);
return true;
}
bool WriteUint64(uint64_t u64) {
char buffer[20];
char *p = buffer;
do {
*p++ = char(u64 % 10) + '0';
u64 /= 10;
} while (u64 > 0);
do {
--p;
os_->Put(*p);
} while (p != buffer);
return true;
}
private:
OutputStream* os_;
};
template<>
bool Writer1<rapidjson::StringBuffer>::WriteUint(unsigned u) {
char buffer[10];
char* p = buffer;
do {
*p++ = char(u % 10) + '0';
u /= 10;
} while (u > 0);
char* d = os_->Push(p - buffer);
do {
--p;
*d++ = *p;
} while (p != buffer);
return true;
}
// Using digits LUT to reduce division/modulo
template<typename OutputStream>
class Writer2 {
public:
Writer2() : os_() {}
Writer2(OutputStream& os) : os_(&os) {}
void Reset(OutputStream& os) {
os_ = &os;
}
bool WriteInt(int i) {
if (i < 0) {
os_->Put('-');
i = -i;
}
return WriteUint((unsigned)i);
}
bool WriteUint(unsigned u) {
char buffer[10];
char* p = buffer;
while (u >= 100) {
const unsigned i = (u % 100) << 1;
u /= 100;
*p++ = digits[i + 1];
*p++ = digits[i];
}
if (u < 10)
*p++ = char(u) + '0';
else {
const unsigned i = u << 1;
*p++ = digits[i + 1];
*p++ = digits[i];
}
do {
--p;
os_->Put(*p);
} while (p != buffer);
return true;
}
bool WriteInt64(int64_t i64) {
if (i64 < 0) {
os_->Put('-');
i64 = -i64;
}
WriteUint64((uint64_t)i64);
return true;
}
bool WriteUint64(uint64_t u64) {
char buffer[20];
char* p = buffer;
while (u64 >= 100) {
const unsigned i = static_cast<unsigned>(u64 % 100) << 1;
u64 /= 100;
*p++ = digits[i + 1];
*p++ = digits[i];
}
if (u64 < 10)
*p++ = char(u64) + '0';
else {
const unsigned i = static_cast<unsigned>(u64) << 1;
*p++ = digits[i + 1];
*p++ = digits[i];
}
do {
--p;
os_->Put(*p);
} while (p != buffer);
return true;
}
private:
OutputStream* os_;
};
// First pass to count digits
template<typename OutputStream>
class Writer3 {
public:
Writer3() : os_() {}
Writer3(OutputStream& os) : os_(&os) {}
void Reset(OutputStream& os) {
os_ = &os;
}
bool WriteInt(int i) {
if (i < 0) {
os_->Put('-');
i = -i;
}
return WriteUint((unsigned)i);
}
bool WriteUint(unsigned u) {
char buffer[10];
char *p = buffer;
do {
*p++ = char(u % 10) + '0';
u /= 10;
} while (u > 0);
do {
--p;
os_->Put(*p);
} while (p != buffer);
return true;
}
bool WriteInt64(int64_t i64) {
if (i64 < 0) {
os_->Put('-');
i64 = -i64;
}
WriteUint64((uint64_t)i64);
return true;
}
bool WriteUint64(uint64_t u64) {
char buffer[20];
char *p = buffer;
do {
*p++ = char(u64 % 10) + '0';
u64 /= 10;
} while (u64 > 0);
do {
--p;
os_->Put(*p);
} while (p != buffer);
return true;
}
private:
void WriteUintReverse(char* d, unsigned u) {
do {
*--d = char(u % 10) + '0';
u /= 10;
} while (u > 0);
}
void WriteUint64Reverse(char* d, uint64_t u) {
do {
*--d = char(u % 10) + '0';
u /= 10;
} while (u > 0);
}
OutputStream* os_;
};
template<>
inline bool Writer3<rapidjson::StringBuffer>::WriteUint(unsigned u) {
unsigned digit = CountDecimalDigit_fast(u);
WriteUintReverse(os_->Push(digit) + digit, u);
return true;
}
template<>
inline bool Writer3<rapidjson::InsituStringStream>::WriteUint(unsigned u) {
unsigned digit = CountDecimalDigit_fast(u);
WriteUintReverse(os_->Push(digit) + digit, u);
return true;
}
template<>
inline bool Writer3<rapidjson::StringBuffer>::WriteUint64(uint64_t u) {
unsigned digit = CountDecimalDigit64_fast(u);
WriteUint64Reverse(os_->Push(digit) + digit, u);
return true;
}
template<>
inline bool Writer3<rapidjson::InsituStringStream>::WriteUint64(uint64_t u) {
unsigned digit = CountDecimalDigit64_fast(u);
WriteUint64Reverse(os_->Push(digit) + digit, u);
return true;
}
// Using digits LUT to reduce division/modulo, two passes
template<typename OutputStream>
class Writer4 {
public:
Writer4() : os_() {}
Writer4(OutputStream& os) : os_(&os) {}
void Reset(OutputStream& os) {
os_ = &os;
}
bool WriteInt(int i) {
if (i < 0) {
os_->Put('-');
i = -i;
}
return WriteUint((unsigned)i);
}
bool WriteUint(unsigned u) {
char buffer[10];
char* p = buffer;
while (u >= 100) {
const unsigned i = (u % 100) << 1;
u /= 100;
*p++ = digits[i + 1];
*p++ = digits[i];
}
if (u < 10)
*p++ = char(u) + '0';
else {
const unsigned i = u << 1;
*p++ = digits[i + 1];
*p++ = digits[i];
}
do {
--p;
os_->Put(*p);
} while (p != buffer);
return true;
}
bool WriteInt64(int64_t i64) {
if (i64 < 0) {
os_->Put('-');
i64 = -i64;
}
WriteUint64((uint64_t)i64);
return true;
}
bool WriteUint64(uint64_t u64) {
char buffer[20];
char* p = buffer;
while (u64 >= 100) {
const unsigned i = static_cast<unsigned>(u64 % 100) << 1;
u64 /= 100;
*p++ = digits[i + 1];
*p++ = digits[i];
}
if (u64 < 10)
*p++ = char(u64) + '0';
else {
const unsigned i = static_cast<unsigned>(u64) << 1;
*p++ = digits[i + 1];
*p++ = digits[i];
}
do {
--p;
os_->Put(*p);
} while (p != buffer);
return true;
}
private:
void WriteUintReverse(char* d, unsigned u) {
while (u >= 100) {
const unsigned i = (u % 100) << 1;
u /= 100;
*--d = digits[i + 1];
*--d = digits[i];
}
if (u < 10) {
*--d = char(u) + '0';
}
else {
const unsigned i = u << 1;
*--d = digits[i + 1];
*--d = digits[i];
}
}
void WriteUint64Reverse(char* d, uint64_t u) {
while (u >= 100) {
const unsigned i = (u % 100) << 1;
u /= 100;
*--d = digits[i + 1];
*--d = digits[i];
}
if (u < 10) {
*--d = char(u) + '0';
}
else {
const unsigned i = u << 1;
*--d = digits[i + 1];
*--d = digits[i];
}
}
OutputStream* os_;
};
template<>
inline bool Writer4<rapidjson::StringBuffer>::WriteUint(unsigned u) {
unsigned digit = CountDecimalDigit_fast(u);
WriteUintReverse(os_->Push(digit) + digit, u);
return true;
}
template<>
inline bool Writer4<rapidjson::InsituStringStream>::WriteUint(unsigned u) {
unsigned digit = CountDecimalDigit_fast(u);
WriteUintReverse(os_->Push(digit) + digit, u);
return true;
}
template<>
inline bool Writer4<rapidjson::StringBuffer>::WriteUint64(uint64_t u) {
unsigned digit = CountDecimalDigit64_fast(u);
WriteUint64Reverse(os_->Push(digit) + digit, u);
return true;
}
template<>
inline bool Writer4<rapidjson::InsituStringStream>::WriteUint64(uint64_t u) {
unsigned digit = CountDecimalDigit64_fast(u);
WriteUint64Reverse(os_->Push(digit) + digit, u);
return true;
}
template <typename Writer>
void itoa_Writer_StringBufferVerify() {
rapidjson::StringBuffer sb;
Writer writer(sb);
for (size_t j = 0; j < randvalCount; j++) {
char buffer[32];
sprintf(buffer, "%d", randval[j]);
writer.WriteInt(randval[j]);
ASSERT_STREQ(buffer, sb.GetString());
sb.Clear();
}
}
template <typename Writer>
void itoa_Writer_InsituStringStreamVerify() {
Writer writer;
for (size_t j = 0; j < randvalCount; j++) {
char buffer[32];
sprintf(buffer, "%d", randval[j]);
char buffer2[32];
rapidjson::InsituStringStream ss(buffer2);
writer.Reset(ss);
char* begin = ss.PutBegin();
writer.WriteInt(randval[j]);
ss.Put('\0');
ss.PutEnd(begin);
ASSERT_STREQ(buffer, buffer2);
}
}
template <typename Writer>
void itoa_Writer_StringBuffer() {
size_t length = 0;
rapidjson::StringBuffer sb;
Writer writer(sb);
for (size_t i = 0; i < kItoaTrialCount; i++) {
for (size_t j = 0; j < randvalCount; j++) {
writer.WriteInt(randval[j]);
length += sb.GetSize();
sb.Clear();
}
}
OUTPUT_LENGTH(length);
}
template <typename Writer>
void itoa_Writer_InsituStringStream() {
size_t length = 0;
char buffer[32];
Writer writer;
for (size_t i = 0; i < kItoaTrialCount; i++) {
for (size_t j = 0; j < randvalCount; j++) {
rapidjson::InsituStringStream ss(buffer);
writer.Reset(ss);
char* begin = ss.PutBegin();
writer.WriteInt(randval[j]);
length += ss.PutEnd(begin);
}
}
OUTPUT_LENGTH(length);
};
template <typename Writer>
void itoa64_Writer_StringBufferVerify() {
rapidjson::StringBuffer sb;
Writer writer(sb);
for (size_t j = 0; j < randvalCount; j++) {
char buffer[32];
int64_t x = randval[j] * randval[j];
sprintf(buffer, "%" PRIi64, x);
writer.WriteInt64(x);
ASSERT_STREQ(buffer, sb.GetString());
sb.Clear();
}
}
template <typename Writer>
void itoa64_Writer_InsituStringStreamVerify() {
Writer writer;
for (size_t j = 0; j < randvalCount; j++) {
char buffer[32];
int64_t x = randval[j] * randval[j];
sprintf(buffer, "%" PRIi64, x);
char buffer2[32];
rapidjson::InsituStringStream ss(buffer2);
writer.Reset(ss);
char* begin = ss.PutBegin();
writer.WriteInt64(x);
ss.Put('\0');
ss.PutEnd(begin);
ASSERT_STREQ(buffer, buffer2);
}
}
template <typename Writer>
void itoa64_Writer_StringBuffer() {
size_t length = 0;
rapidjson::StringBuffer sb;
Writer writer(sb);
for (size_t i = 0; i < kItoaTrialCount; i++) {
for (size_t j = 0; j < randvalCount; j++) {
writer.WriteInt64(randval[j] * randval[j]);
length += sb.GetSize();
sb.Clear();
}
}
OUTPUT_LENGTH(length);
}
template <typename Writer>
void itoa64_Writer_InsituStringStream() {
size_t length = 0;
char buffer[32];
Writer writer;
for (size_t i = 0; i < kItoaTrialCount; i++) {
for (size_t j = 0; j < randvalCount; j++) {
rapidjson::InsituStringStream ss(buffer);
writer.Reset(ss);
char* begin = ss.PutBegin();
writer.WriteInt64(randval[j] * randval[j]);
length += ss.PutEnd(begin);
}
}
OUTPUT_LENGTH(length);
};
// Full specialization for InsituStringStream to prevent memory copying
// (normally we will not use InsituStringStream for writing, just for testing)
namespace rapidjson {
template<>
bool rapidjson::Writer<InsituStringStream>::WriteInt(int i) {
char *buffer = os_->Push(11);
const char* end = internal::i32toa(i, buffer);
os_->Pop(11 - (end - buffer));
return true;
}
template<>
bool Writer<InsituStringStream>::WriteUint(unsigned u) {
char *buffer = os_->Push(10);
const char* end = internal::u32toa(u, buffer);
os_->Pop(10 - (end - buffer));
return true;
}
template<>
bool Writer<InsituStringStream>::WriteInt64(int64_t i64) {
char *buffer = os_->Push(21);
const char* end = internal::i64toa(i64, buffer);
os_->Pop(21 - (end - buffer));
return true;
}
template<>
bool Writer<InsituStringStream>::WriteUint64(uint64_t u) {
char *buffer = os_->Push(20);
const char* end = internal::u64toa(u, buffer);
os_->Pop(20 - (end - buffer));
return true;
}
} // namespace rapidjson
TEST_F(Misc, itoa_Writer_StringBufferVerify) { itoa_Writer_StringBufferVerify<rapidjson::Writer<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa_Writer1_StringBufferVerify) { itoa_Writer_StringBufferVerify<Writer1<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa_Writer2_StringBufferVerify) { itoa_Writer_StringBufferVerify<Writer2<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa_Writer3_StringBufferVerify) { itoa_Writer_StringBufferVerify<Writer3<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa_Writer4_StringBufferVerify) { itoa_Writer_StringBufferVerify<Writer4<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa_Writer_InsituStringStreamVerify) { itoa_Writer_InsituStringStreamVerify<rapidjson::Writer<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa_Writer1_InsituStringStreamVerify) { itoa_Writer_InsituStringStreamVerify<Writer1<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa_Writer2_InsituStringStreamVerify) { itoa_Writer_InsituStringStreamVerify<Writer2<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa_Writer3_InsituStringStreamVerify) { itoa_Writer_InsituStringStreamVerify<Writer3<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa_Writer4_InsituStringStreamVerify) { itoa_Writer_InsituStringStreamVerify<Writer4<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa_Writer_StringBuffer) { itoa_Writer_StringBuffer<rapidjson::Writer<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa_Writer1_StringBuffer) { itoa_Writer_StringBuffer<Writer1<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa_Writer2_StringBuffer) { itoa_Writer_StringBuffer<Writer2<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa_Writer3_StringBuffer) { itoa_Writer_StringBuffer<Writer3<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa_Writer4_StringBuffer) { itoa_Writer_StringBuffer<Writer4<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa_Writer_InsituStringStream) { itoa_Writer_InsituStringStream<rapidjson::Writer<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa_Writer1_InsituStringStream) { itoa_Writer_InsituStringStream<Writer1<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa_Writer2_InsituStringStream) { itoa_Writer_InsituStringStream<Writer2<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa_Writer3_InsituStringStream) { itoa_Writer_InsituStringStream<Writer3<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa_Writer4_InsituStringStream) { itoa_Writer_InsituStringStream<Writer4<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa64_Writer_StringBufferVerify) { itoa64_Writer_StringBufferVerify<rapidjson::Writer<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa64_Writer1_StringBufferVerify) { itoa64_Writer_StringBufferVerify<Writer1<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa64_Writer2_StringBufferVerify) { itoa64_Writer_StringBufferVerify<Writer2<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa64_Writer3_StringBufferVerify) { itoa64_Writer_StringBufferVerify<Writer3<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa64_Writer4_StringBufferVerify) { itoa64_Writer_StringBufferVerify<Writer4<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa64_Writer_InsituStringStreamVerify) { itoa64_Writer_InsituStringStreamVerify<rapidjson::Writer<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa64_Writer1_InsituStringStreamVerify) { itoa64_Writer_InsituStringStreamVerify<Writer1<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa64_Writer2_InsituStringStreamVerify) { itoa64_Writer_InsituStringStreamVerify<Writer2<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa64_Writer3_InsituStringStreamVerify) { itoa64_Writer_InsituStringStreamVerify<Writer3<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa64_Writer4_InsituStringStreamVerify) { itoa64_Writer_InsituStringStreamVerify<Writer4<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa64_Writer_StringBuffer) { itoa64_Writer_StringBuffer<rapidjson::Writer<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa64_Writer1_StringBuffer) { itoa64_Writer_StringBuffer<Writer1<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa64_Writer2_StringBuffer) { itoa64_Writer_StringBuffer<Writer2<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa64_Writer3_StringBuffer) { itoa64_Writer_StringBuffer<Writer3<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa64_Writer4_StringBuffer) { itoa64_Writer_StringBuffer<Writer4<rapidjson::StringBuffer> >(); }
TEST_F(Misc, itoa64_Writer_InsituStringStream) { itoa64_Writer_InsituStringStream<rapidjson::Writer<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa64_Writer1_InsituStringStream) { itoa64_Writer_InsituStringStream<Writer1<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa64_Writer2_InsituStringStream) { itoa64_Writer_InsituStringStream<Writer2<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa64_Writer3_InsituStringStream) { itoa64_Writer_InsituStringStream<Writer3<rapidjson::InsituStringStream> >(); }
TEST_F(Misc, itoa64_Writer4_InsituStringStream) { itoa64_Writer_InsituStringStream<Writer4<rapidjson::InsituStringStream> >(); }
#endif // TEST_MISC
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