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authorMilo Yip <miloyip@gmail.com>2014-08-11 18:26:45 +0400
committerMilo Yip <miloyip@gmail.com>2014-08-11 18:26:45 +0400
commit0dbcc1cf2ea62a40adf2f713bdb21685d85653ed (patch)
tree1165cb491d656e5d5220da184ff432bacb50d3fa /include/rapidjson/internal
parentadb3974e4d078e253a31f4e9e034583bf41298d8 (diff)
Add license and change indents from tab to space.
Diffstat (limited to 'include/rapidjson/internal')
-rw-r--r--include/rapidjson/internal/dtoa.h685
-rw-r--r--include/rapidjson/internal/itoa.h45
-rw-r--r--include/rapidjson/internal/meta.h38
-rw-r--r--include/rapidjson/internal/pow10.h66
-rw-r--r--include/rapidjson/internal/stack.h162
-rw-r--r--include/rapidjson/internal/strfunc.h34
6 files changed, 566 insertions, 464 deletions
diff --git a/include/rapidjson/internal/dtoa.h b/include/rapidjson/internal/dtoa.h
index 44f5c115..bef02b01 100644
--- a/include/rapidjson/internal/dtoa.h
+++ b/include/rapidjson/internal/dtoa.h
@@ -1,5 +1,26 @@
-// Modified from https://github.com/miloyip/dtoa-benchmark/blob/master/src/milo/dtoa_milo.h
-// API is changed to return the character passed the end of string, without writing '\0'
+// Copyright (C) 2011 Milo Yip
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// This is a C++ header-only implementation of Grisu2 algorithm from the publication:
+// Loitsch, Florian. "Printing floating-point numbers quickly and accurately with
+// integers." ACM Sigplan Notices 45.6 (2010): 233-243.
#ifndef RAPIDJSON_DTOA_
#define RAPIDJSON_DTOA_
@@ -22,385 +43,369 @@ RAPIDJSON_DIAG_OFF(effc++)
#endif
struct DiyFp {
- DiyFp() {}
-
- DiyFp(uint64_t f, int e) : f(f), e(e) {}
-
- DiyFp(double d) {
- union {
- double d;
- uint64_t u64;
- } u = { d };
-
- int biased_e = (u.u64 & kDpExponentMask) >> kDpSignificandSize;
- uint64_t significand = (u.u64 & kDpSignificandMask);
- if (biased_e != 0) {
- f = significand + kDpHiddenBit;
- e = biased_e - kDpExponentBias;
- }
- else {
- f = significand;
- e = kDpMinExponent + 1;
- }
- }
-
- DiyFp operator-(const DiyFp& rhs) const {
- return DiyFp(f - rhs.f, e);
- }
-
- DiyFp operator*(const DiyFp& rhs) const {
+ DiyFp() {}
+
+ DiyFp(uint64_t f, int e) : f(f), e(e) {}
+
+ DiyFp(double d) {
+ union {
+ double d;
+ uint64_t u64;
+ } u = { d };
+
+ int biased_e = (u.u64 & kDpExponentMask) >> kDpSignificandSize;
+ uint64_t significand = (u.u64 & kDpSignificandMask);
+ if (biased_e != 0) {
+ f = significand + kDpHiddenBit;
+ e = biased_e - kDpExponentBias;
+ }
+ else {
+ f = significand;
+ e = kDpMinExponent + 1;
+ }
+ }
+
+ DiyFp operator-(const DiyFp& rhs) const {
+ return DiyFp(f - rhs.f, e);
+ }
+
+ DiyFp operator*(const DiyFp& rhs) const {
#if defined(_MSC_VER) && defined(_M_AMD64)
- uint64_t h;
- uint64_t l = _umul128(f, rhs.f, &h);
- if (l & (uint64_t(1) << 63)) // rounding
- h++;
- return DiyFp(h, e + rhs.e + 64);
+ uint64_t h;
+ uint64_t l = _umul128(f, rhs.f, &h);
+ if (l & (uint64_t(1) << 63)) // rounding
+ h++;
+ return DiyFp(h, e + rhs.e + 64);
#elif (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)) && defined(__x86_64__)
- unsigned __int128 p = static_cast<unsigned __int128>(f) * static_cast<unsigned __int128>(rhs.f);
- uint64_t h = p >> 64;
- uint64_t l = static_cast<uint64_t>(p);
- if (l & (uint64_t(1) << 63)) // rounding
- h++;
- return DiyFp(h, e + rhs.e + 64);
+ unsigned __int128 p = static_cast<unsigned __int128>(f) * static_cast<unsigned __int128>(rhs.f);
+ uint64_t h = p >> 64;
+ uint64_t l = static_cast<uint64_t>(p);
+ if (l & (uint64_t(1) << 63)) // rounding
+ h++;
+ return DiyFp(h, e + rhs.e + 64);
#else
- const uint64_t M32 = 0xFFFFFFFF;
- const uint64_t a = f >> 32;
- const uint64_t b = f & M32;
- const uint64_t c = rhs.f >> 32;
- const uint64_t d = rhs.f & M32;
- const uint64_t ac = a * c;
- const uint64_t bc = b * c;
- const uint64_t ad = a * d;
- const uint64_t bd = b * d;
- uint64_t tmp = (bd >> 32) + (ad & M32) + (bc & M32);
- tmp += 1U << 31; /// mult_round
- return DiyFp(ac + (ad >> 32) + (bc >> 32) + (tmp >> 32), e + rhs.e + 64);
+ const uint64_t M32 = 0xFFFFFFFF;
+ const uint64_t a = f >> 32;
+ const uint64_t b = f & M32;
+ const uint64_t c = rhs.f >> 32;
+ const uint64_t d = rhs.f & M32;
+ const uint64_t ac = a * c;
+ const uint64_t bc = b * c;
+ const uint64_t ad = a * d;
+ const uint64_t bd = b * d;
+ uint64_t tmp = (bd >> 32) + (ad & M32) + (bc & M32);
+ tmp += 1U << 31; /// mult_round
+ return DiyFp(ac + (ad >> 32) + (bc >> 32) + (tmp >> 32), e + rhs.e + 64);
#endif
- }
+ }
- DiyFp Normalize() const {
+ DiyFp Normalize() const {
#if defined(_MSC_VER) && defined(_M_AMD64)
- unsigned long index;
- _BitScanReverse64(&index, f);
- return DiyFp(f << (63 - index), e - (63 - index));
+ unsigned long index;
+ _BitScanReverse64(&index, f);
+ return DiyFp(f << (63 - index), e - (63 - index));
#elif defined(__GNUC__)
- int s = __builtin_clzll(f) + 1;
- return DiyFp(f << s, e - s);
+ int s = __builtin_clzll(f) + 1;
+ return DiyFp(f << s, e - s);
#else
- DiyFp res = *this;
- while (!(res.f & kDpHiddenBit)) {
- res.f <<= 1;
- res.e--;
- }
- res.f <<= (kDiySignificandSize - kDpSignificandSize - 1);
- res.e = res.e - (kDiySignificandSize - kDpSignificandSize - 1);
- return res;
+ DiyFp res = *this;
+ while (!(res.f & kDpHiddenBit)) {
+ res.f <<= 1;
+ res.e--;
+ }
+ res.f <<= (kDiySignificandSize - kDpSignificandSize - 1);
+ res.e = res.e - (kDiySignificandSize - kDpSignificandSize - 1);
+ return res;
#endif
- }
+ }
- DiyFp NormalizeBoundary() const {
+ DiyFp NormalizeBoundary() const {
#if defined(_MSC_VER) && defined(_M_AMD64)
- unsigned long index;
- _BitScanReverse64(&index, f);
- return DiyFp (f << (63 - index), e - (63 - index));
+ unsigned long index;
+ _BitScanReverse64(&index, f);
+ return DiyFp (f << (63 - index), e - (63 - index));
#else
- DiyFp res = *this;
- while (!(res.f & (kDpHiddenBit << 1))) {
- res.f <<= 1;
- res.e--;
- }
- res.f <<= (kDiySignificandSize - kDpSignificandSize - 2);
- res.e = res.e - (kDiySignificandSize - kDpSignificandSize - 2);
- return res;
+ DiyFp res = *this;
+ while (!(res.f & (kDpHiddenBit << 1))) {
+ res.f <<= 1;
+ res.e--;
+ }
+ res.f <<= (kDiySignificandSize - kDpSignificandSize - 2);
+ res.e = res.e - (kDiySignificandSize - kDpSignificandSize - 2);
+ return res;
#endif
- }
-
- void NormalizedBoundaries(DiyFp* minus, DiyFp* plus) const {
- DiyFp pl = DiyFp((f << 1) + 1, e - 1).NormalizeBoundary();
- DiyFp mi = (f == kDpHiddenBit) ? DiyFp((f << 2) - 1, e - 2) : DiyFp((f << 1) - 1, e - 1);
- mi.f <<= mi.e - pl.e;
- mi.e = pl.e;
- *plus = pl;
- *minus = mi;
- }
-
- static const int kDiySignificandSize = 64;
- static const int kDpSignificandSize = 52;
- static const int kDpExponentBias = 0x3FF + kDpSignificandSize;
- static const int kDpMinExponent = -kDpExponentBias;
- static const uint64_t kDpExponentMask = RAPIDJSON_UINT64_C2(0x7FF00000, 0x00000000);
- static const uint64_t kDpSignificandMask = RAPIDJSON_UINT64_C2(0x000FFFFF, 0xFFFFFFFF);
- static const uint64_t kDpHiddenBit = RAPIDJSON_UINT64_C2(0x00100000, 0x00000000);
-
- uint64_t f;
- int e;
+ }
+
+ void NormalizedBoundaries(DiyFp* minus, DiyFp* plus) const {
+ DiyFp pl = DiyFp((f << 1) + 1, e - 1).NormalizeBoundary();
+ DiyFp mi = (f == kDpHiddenBit) ? DiyFp((f << 2) - 1, e - 2) : DiyFp((f << 1) - 1, e - 1);
+ mi.f <<= mi.e - pl.e;
+ mi.e = pl.e;
+ *plus = pl;
+ *minus = mi;
+ }
+
+ static const int kDiySignificandSize = 64;
+ static const int kDpSignificandSize = 52;
+ static const int kDpExponentBias = 0x3FF + kDpSignificandSize;
+ static const int kDpMinExponent = -kDpExponentBias;
+ static const uint64_t kDpExponentMask = RAPIDJSON_UINT64_C2(0x7FF00000, 0x00000000);
+ static const uint64_t kDpSignificandMask = RAPIDJSON_UINT64_C2(0x000FFFFF, 0xFFFFFFFF);
+ static const uint64_t kDpHiddenBit = RAPIDJSON_UINT64_C2(0x00100000, 0x00000000);
+
+ uint64_t f;
+ int e;
};
inline DiyFp GetCachedPower(int e, int* K) {
- // 10^-348, 10^-340, ..., 10^340
- static const uint64_t kCachedPowers_F[] = {
- RAPIDJSON_UINT64_C2(0xfa8fd5a0, 0x081c0288), RAPIDJSON_UINT64_C2(0xbaaee17f, 0xa23ebf76),
- RAPIDJSON_UINT64_C2(0x8b16fb20, 0x3055ac76), RAPIDJSON_UINT64_C2(0xcf42894a, 0x5dce35ea),
- RAPIDJSON_UINT64_C2(0x9a6bb0aa, 0x55653b2d), RAPIDJSON_UINT64_C2(0xe61acf03, 0x3d1a45df),
- RAPIDJSON_UINT64_C2(0xab70fe17, 0xc79ac6ca), RAPIDJSON_UINT64_C2(0xff77b1fc, 0xbebcdc4f),
- RAPIDJSON_UINT64_C2(0xbe5691ef, 0x416bd60c), RAPIDJSON_UINT64_C2(0x8dd01fad, 0x907ffc3c),
- RAPIDJSON_UINT64_C2(0xd3515c28, 0x31559a83), RAPIDJSON_UINT64_C2(0x9d71ac8f, 0xada6c9b5),
- RAPIDJSON_UINT64_C2(0xea9c2277, 0x23ee8bcb), RAPIDJSON_UINT64_C2(0xaecc4991, 0x4078536d),
- RAPIDJSON_UINT64_C2(0x823c1279, 0x5db6ce57), RAPIDJSON_UINT64_C2(0xc2109436, 0x4dfb5637),
- RAPIDJSON_UINT64_C2(0x9096ea6f, 0x3848984f), RAPIDJSON_UINT64_C2(0xd77485cb, 0x25823ac7),
- RAPIDJSON_UINT64_C2(0xa086cfcd, 0x97bf97f4), RAPIDJSON_UINT64_C2(0xef340a98, 0x172aace5),
- RAPIDJSON_UINT64_C2(0xb23867fb, 0x2a35b28e), RAPIDJSON_UINT64_C2(0x84c8d4df, 0xd2c63f3b),
- RAPIDJSON_UINT64_C2(0xc5dd4427, 0x1ad3cdba), RAPIDJSON_UINT64_C2(0x936b9fce, 0xbb25c996),
- RAPIDJSON_UINT64_C2(0xdbac6c24, 0x7d62a584), RAPIDJSON_UINT64_C2(0xa3ab6658, 0x0d5fdaf6),
- RAPIDJSON_UINT64_C2(0xf3e2f893, 0xdec3f126), RAPIDJSON_UINT64_C2(0xb5b5ada8, 0xaaff80b8),
- RAPIDJSON_UINT64_C2(0x87625f05, 0x6c7c4a8b), RAPIDJSON_UINT64_C2(0xc9bcff60, 0x34c13053),
- RAPIDJSON_UINT64_C2(0x964e858c, 0x91ba2655), RAPIDJSON_UINT64_C2(0xdff97724, 0x70297ebd),
- RAPIDJSON_UINT64_C2(0xa6dfbd9f, 0xb8e5b88f), RAPIDJSON_UINT64_C2(0xf8a95fcf, 0x88747d94),
- RAPIDJSON_UINT64_C2(0xb9447093, 0x8fa89bcf), RAPIDJSON_UINT64_C2(0x8a08f0f8, 0xbf0f156b),
- RAPIDJSON_UINT64_C2(0xcdb02555, 0x653131b6), RAPIDJSON_UINT64_C2(0x993fe2c6, 0xd07b7fac),
- RAPIDJSON_UINT64_C2(0xe45c10c4, 0x2a2b3b06), RAPIDJSON_UINT64_C2(0xaa242499, 0x697392d3),
- RAPIDJSON_UINT64_C2(0xfd87b5f2, 0x8300ca0e), RAPIDJSON_UINT64_C2(0xbce50864, 0x92111aeb),
- RAPIDJSON_UINT64_C2(0x8cbccc09, 0x6f5088cc), RAPIDJSON_UINT64_C2(0xd1b71758, 0xe219652c),
- RAPIDJSON_UINT64_C2(0x9c400000, 0x00000000), RAPIDJSON_UINT64_C2(0xe8d4a510, 0x00000000),
- RAPIDJSON_UINT64_C2(0xad78ebc5, 0xac620000), RAPIDJSON_UINT64_C2(0x813f3978, 0xf8940984),
- RAPIDJSON_UINT64_C2(0xc097ce7b, 0xc90715b3), RAPIDJSON_UINT64_C2(0x8f7e32ce, 0x7bea5c70),
- RAPIDJSON_UINT64_C2(0xd5d238a4, 0xabe98068), RAPIDJSON_UINT64_C2(0x9f4f2726, 0x179a2245),
- RAPIDJSON_UINT64_C2(0xed63a231, 0xd4c4fb27), RAPIDJSON_UINT64_C2(0xb0de6538, 0x8cc8ada8),
- RAPIDJSON_UINT64_C2(0x83c7088e, 0x1aab65db), RAPIDJSON_UINT64_C2(0xc45d1df9, 0x42711d9a),
- RAPIDJSON_UINT64_C2(0x924d692c, 0xa61be758), RAPIDJSON_UINT64_C2(0xda01ee64, 0x1a708dea),
- RAPIDJSON_UINT64_C2(0xa26da399, 0x9aef774a), RAPIDJSON_UINT64_C2(0xf209787b, 0xb47d6b85),
- RAPIDJSON_UINT64_C2(0xb454e4a1, 0x79dd1877), RAPIDJSON_UINT64_C2(0x865b8692, 0x5b9bc5c2),
- RAPIDJSON_UINT64_C2(0xc83553c5, 0xc8965d3d), RAPIDJSON_UINT64_C2(0x952ab45c, 0xfa97a0b3),
- RAPIDJSON_UINT64_C2(0xde469fbd, 0x99a05fe3), RAPIDJSON_UINT64_C2(0xa59bc234, 0xdb398c25),
- RAPIDJSON_UINT64_C2(0xf6c69a72, 0xa3989f5c), RAPIDJSON_UINT64_C2(0xb7dcbf53, 0x54e9bece),
- RAPIDJSON_UINT64_C2(0x88fcf317, 0xf22241e2), RAPIDJSON_UINT64_C2(0xcc20ce9b, 0xd35c78a5),
- RAPIDJSON_UINT64_C2(0x98165af3, 0x7b2153df), RAPIDJSON_UINT64_C2(0xe2a0b5dc, 0x971f303a),
- RAPIDJSON_UINT64_C2(0xa8d9d153, 0x5ce3b396), RAPIDJSON_UINT64_C2(0xfb9b7cd9, 0xa4a7443c),
- RAPIDJSON_UINT64_C2(0xbb764c4c, 0xa7a44410), RAPIDJSON_UINT64_C2(0x8bab8eef, 0xb6409c1a),
- RAPIDJSON_UINT64_C2(0xd01fef10, 0xa657842c), RAPIDJSON_UINT64_C2(0x9b10a4e5, 0xe9913129),
- RAPIDJSON_UINT64_C2(0xe7109bfb, 0xa19c0c9d), RAPIDJSON_UINT64_C2(0xac2820d9, 0x623bf429),
- RAPIDJSON_UINT64_C2(0x80444b5e, 0x7aa7cf85), RAPIDJSON_UINT64_C2(0xbf21e440, 0x03acdd2d),
- RAPIDJSON_UINT64_C2(0x8e679c2f, 0x5e44ff8f), RAPIDJSON_UINT64_C2(0xd433179d, 0x9c8cb841),
- RAPIDJSON_UINT64_C2(0x9e19db92, 0xb4e31ba9), RAPIDJSON_UINT64_C2(0xeb96bf6e, 0xbadf77d9),
- RAPIDJSON_UINT64_C2(0xaf87023b, 0x9bf0ee6b)
- };
- static const int16_t kCachedPowers_E[] = {
- -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980,
- -954, -927, -901, -874, -847, -821, -794, -768, -741, -715,
- -688, -661, -635, -608, -582, -555, -529, -502, -475, -449,
- -422, -396, -369, -343, -316, -289, -263, -236, -210, -183,
- -157, -130, -103, -77, -50, -24, 3, 30, 56, 83,
- 109, 136, 162, 189, 216, 242, 269, 295, 322, 348,
- 375, 402, 428, 455, 481, 508, 534, 561, 588, 614,
- 641, 667, 694, 720, 747, 774, 800, 827, 853, 880,
- 907, 933, 960, 986, 1013, 1039, 1066
- };
-
- //int k = static_cast<int>(ceil((-61 - e) * 0.30102999566398114)) + 374;
- double dk = (-61 - e) * 0.30102999566398114 + 347; // dk must be positive, so can do ceiling in positive
- int k = static_cast<int>(dk);
- if (k != dk)
- k++;
-
- unsigned index = static_cast<unsigned>((k >> 3) + 1);
- *K = -(-348 + static_cast<int>(index << 3)); // decimal exponent no need lookup table
-
- return DiyFp(kCachedPowers_F[index], kCachedPowers_E[index]);
+ // 10^-348, 10^-340, ..., 10^340
+ static const uint64_t kCachedPowers_F[] = {
+ RAPIDJSON_UINT64_C2(0xfa8fd5a0, 0x081c0288), RAPIDJSON_UINT64_C2(0xbaaee17f, 0xa23ebf76),
+ RAPIDJSON_UINT64_C2(0x8b16fb20, 0x3055ac76), RAPIDJSON_UINT64_C2(0xcf42894a, 0x5dce35ea),
+ RAPIDJSON_UINT64_C2(0x9a6bb0aa, 0x55653b2d), RAPIDJSON_UINT64_C2(0xe61acf03, 0x3d1a45df),
+ RAPIDJSON_UINT64_C2(0xab70fe17, 0xc79ac6ca), RAPIDJSON_UINT64_C2(0xff77b1fc, 0xbebcdc4f),
+ RAPIDJSON_UINT64_C2(0xbe5691ef, 0x416bd60c), RAPIDJSON_UINT64_C2(0x8dd01fad, 0x907ffc3c),
+ RAPIDJSON_UINT64_C2(0xd3515c28, 0x31559a83), RAPIDJSON_UINT64_C2(0x9d71ac8f, 0xada6c9b5),
+ RAPIDJSON_UINT64_C2(0xea9c2277, 0x23ee8bcb), RAPIDJSON_UINT64_C2(0xaecc4991, 0x4078536d),
+ RAPIDJSON_UINT64_C2(0x823c1279, 0x5db6ce57), RAPIDJSON_UINT64_C2(0xc2109436, 0x4dfb5637),
+ RAPIDJSON_UINT64_C2(0x9096ea6f, 0x3848984f), RAPIDJSON_UINT64_C2(0xd77485cb, 0x25823ac7),
+ RAPIDJSON_UINT64_C2(0xa086cfcd, 0x97bf97f4), RAPIDJSON_UINT64_C2(0xef340a98, 0x172aace5),
+ RAPIDJSON_UINT64_C2(0xb23867fb, 0x2a35b28e), RAPIDJSON_UINT64_C2(0x84c8d4df, 0xd2c63f3b),
+ RAPIDJSON_UINT64_C2(0xc5dd4427, 0x1ad3cdba), RAPIDJSON_UINT64_C2(0x936b9fce, 0xbb25c996),
+ RAPIDJSON_UINT64_C2(0xdbac6c24, 0x7d62a584), RAPIDJSON_UINT64_C2(0xa3ab6658, 0x0d5fdaf6),
+ RAPIDJSON_UINT64_C2(0xf3e2f893, 0xdec3f126), RAPIDJSON_UINT64_C2(0xb5b5ada8, 0xaaff80b8),
+ RAPIDJSON_UINT64_C2(0x87625f05, 0x6c7c4a8b), RAPIDJSON_UINT64_C2(0xc9bcff60, 0x34c13053),
+ RAPIDJSON_UINT64_C2(0x964e858c, 0x91ba2655), RAPIDJSON_UINT64_C2(0xdff97724, 0x70297ebd),
+ RAPIDJSON_UINT64_C2(0xa6dfbd9f, 0xb8e5b88f), RAPIDJSON_UINT64_C2(0xf8a95fcf, 0x88747d94),
+ RAPIDJSON_UINT64_C2(0xb9447093, 0x8fa89bcf), RAPIDJSON_UINT64_C2(0x8a08f0f8, 0xbf0f156b),
+ RAPIDJSON_UINT64_C2(0xcdb02555, 0x653131b6), RAPIDJSON_UINT64_C2(0x993fe2c6, 0xd07b7fac),
+ RAPIDJSON_UINT64_C2(0xe45c10c4, 0x2a2b3b06), RAPIDJSON_UINT64_C2(0xaa242499, 0x697392d3),
+ RAPIDJSON_UINT64_C2(0xfd87b5f2, 0x8300ca0e), RAPIDJSON_UINT64_C2(0xbce50864, 0x92111aeb),
+ RAPIDJSON_UINT64_C2(0x8cbccc09, 0x6f5088cc), RAPIDJSON_UINT64_C2(0xd1b71758, 0xe219652c),
+ RAPIDJSON_UINT64_C2(0x9c400000, 0x00000000), RAPIDJSON_UINT64_C2(0xe8d4a510, 0x00000000),
+ RAPIDJSON_UINT64_C2(0xad78ebc5, 0xac620000), RAPIDJSON_UINT64_C2(0x813f3978, 0xf8940984),
+ RAPIDJSON_UINT64_C2(0xc097ce7b, 0xc90715b3), RAPIDJSON_UINT64_C2(0x8f7e32ce, 0x7bea5c70),
+ RAPIDJSON_UINT64_C2(0xd5d238a4, 0xabe98068), RAPIDJSON_UINT64_C2(0x9f4f2726, 0x179a2245),
+ RAPIDJSON_UINT64_C2(0xed63a231, 0xd4c4fb27), RAPIDJSON_UINT64_C2(0xb0de6538, 0x8cc8ada8),
+ RAPIDJSON_UINT64_C2(0x83c7088e, 0x1aab65db), RAPIDJSON_UINT64_C2(0xc45d1df9, 0x42711d9a),
+ RAPIDJSON_UINT64_C2(0x924d692c, 0xa61be758), RAPIDJSON_UINT64_C2(0xda01ee64, 0x1a708dea),
+ RAPIDJSON_UINT64_C2(0xa26da399, 0x9aef774a), RAPIDJSON_UINT64_C2(0xf209787b, 0xb47d6b85),
+ RAPIDJSON_UINT64_C2(0xb454e4a1, 0x79dd1877), RAPIDJSON_UINT64_C2(0x865b8692, 0x5b9bc5c2),
+ RAPIDJSON_UINT64_C2(0xc83553c5, 0xc8965d3d), RAPIDJSON_UINT64_C2(0x952ab45c, 0xfa97a0b3),
+ RAPIDJSON_UINT64_C2(0xde469fbd, 0x99a05fe3), RAPIDJSON_UINT64_C2(0xa59bc234, 0xdb398c25),
+ RAPIDJSON_UINT64_C2(0xf6c69a72, 0xa3989f5c), RAPIDJSON_UINT64_C2(0xb7dcbf53, 0x54e9bece),
+ RAPIDJSON_UINT64_C2(0x88fcf317, 0xf22241e2), RAPIDJSON_UINT64_C2(0xcc20ce9b, 0xd35c78a5),
+ RAPIDJSON_UINT64_C2(0x98165af3, 0x7b2153df), RAPIDJSON_UINT64_C2(0xe2a0b5dc, 0x971f303a),
+ RAPIDJSON_UINT64_C2(0xa8d9d153, 0x5ce3b396), RAPIDJSON_UINT64_C2(0xfb9b7cd9, 0xa4a7443c),
+ RAPIDJSON_UINT64_C2(0xbb764c4c, 0xa7a44410), RAPIDJSON_UINT64_C2(0x8bab8eef, 0xb6409c1a),
+ RAPIDJSON_UINT64_C2(0xd01fef10, 0xa657842c), RAPIDJSON_UINT64_C2(0x9b10a4e5, 0xe9913129),
+ RAPIDJSON_UINT64_C2(0xe7109bfb, 0xa19c0c9d), RAPIDJSON_UINT64_C2(0xac2820d9, 0x623bf429),
+ RAPIDJSON_UINT64_C2(0x80444b5e, 0x7aa7cf85), RAPIDJSON_UINT64_C2(0xbf21e440, 0x03acdd2d),
+ RAPIDJSON_UINT64_C2(0x8e679c2f, 0x5e44ff8f), RAPIDJSON_UINT64_C2(0xd433179d, 0x9c8cb841),
+ RAPIDJSON_UINT64_C2(0x9e19db92, 0xb4e31ba9), RAPIDJSON_UINT64_C2(0xeb96bf6e, 0xbadf77d9),
+ RAPIDJSON_UINT64_C2(0xaf87023b, 0x9bf0ee6b)
+ };
+ static const int16_t kCachedPowers_E[] = {
+ -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980,
+ -954, -927, -901, -874, -847, -821, -794, -768, -741, -715,
+ -688, -661, -635, -608, -582, -555, -529, -502, -475, -449,
+ -422, -396, -369, -343, -316, -289, -263, -236, -210, -183,
+ -157, -130, -103, -77, -50, -24, 3, 30, 56, 83,
+ 109, 136, 162, 189, 216, 242, 269, 295, 322, 348,
+ 375, 402, 428, 455, 481, 508, 534, 561, 588, 614,
+ 641, 667, 694, 720, 747, 774, 800, 827, 853, 880,
+ 907, 933, 960, 986, 1013, 1039, 1066
+ };
+
+ //int k = static_cast<int>(ceil((-61 - e) * 0.30102999566398114)) + 374;
+ double dk = (-61 - e) * 0.30102999566398114 + 347; // dk must be positive, so can do ceiling in positive
+ int k = static_cast<int>(dk);
+ if (k != dk)
+ k++;
+
+ unsigned index = static_cast<unsigned>((k >> 3) + 1);
+ *K = -(-348 + static_cast<int>(index << 3)); // decimal exponent no need lookup table
+
+ return DiyFp(kCachedPowers_F[index], kCachedPowers_E[index]);
}
inline void GrisuRound(char* buffer, int len, uint64_t delta, uint64_t rest, uint64_t ten_kappa, uint64_t wp_w) {
- while (rest < wp_w && delta - rest >= ten_kappa &&
- (rest + ten_kappa < wp_w || /// closer
- wp_w - rest > rest + ten_kappa - wp_w)) {
- buffer[len - 1]--;
- rest += ten_kappa;
- }
+ while (rest < wp_w && delta - rest >= ten_kappa &&
+ (rest + ten_kappa < wp_w || /// closer
+ wp_w - rest > rest + ten_kappa - wp_w)) {
+ buffer[len - 1]--;
+ rest += ten_kappa;
+ }
}
inline unsigned CountDecimalDigit32(uint32_t n) {
- // Simple pure C++ implementation was faster than __builtin_clz version in this situation.
- if (n < 10) return 1;
- if (n < 100) return 2;
- if (n < 1000) return 3;
- if (n < 10000) return 4;
- if (n < 100000) return 5;
- if (n < 1000000) return 6;
- if (n < 10000000) return 7;
- if (n < 100000000) return 8;
- if (n < 1000000000) return 9;
- return 10;
+ // Simple pure C++ implementation was faster than __builtin_clz version in this situation.
+ if (n < 10) return 1;
+ if (n < 100) return 2;
+ if (n < 1000) return 3;
+ if (n < 10000) return 4;
+ if (n < 100000) return 5;
+ if (n < 1000000) return 6;
+ if (n < 10000000) return 7;
+ if (n < 100000000) return 8;
+ if (n < 1000000000) return 9;
+ return 10;
}
inline void DigitGen(const DiyFp& W, const DiyFp& Mp, uint64_t delta, char* buffer, int* len, int* K) {
- static const uint32_t kPow10[] = { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000 };
- const DiyFp one(uint64_t(1) << -Mp.e, Mp.e);
- const DiyFp wp_w = Mp - W;
- uint32_t p1 = static_cast<uint32_t>(Mp.f >> -one.e);
- uint64_t p2 = Mp.f & (one.f - 1);
- int kappa = CountDecimalDigit32(p1);
- *len = 0;
-
- while (kappa > 0) {
- uint32_t d;
- switch (kappa) {
- case 10: d = p1 / 1000000000; p1 %= 1000000000; break;
- case 9: d = p1 / 100000000; p1 %= 100000000; break;
- case 8: d = p1 / 10000000; p1 %= 10000000; break;
- case 7: d = p1 / 1000000; p1 %= 1000000; break;
- case 6: d = p1 / 100000; p1 %= 100000; break;
- case 5: d = p1 / 10000; p1 %= 10000; break;
- case 4: d = p1 / 1000; p1 %= 1000; break;
- case 3: d = p1 / 100; p1 %= 100; break;
- case 2: d = p1 / 10; p1 %= 10; break;
- case 1: d = p1; p1 = 0; break;
- default:
+ static const uint32_t kPow10[] = { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000 };
+ const DiyFp one(uint64_t(1) << -Mp.e, Mp.e);
+ const DiyFp wp_w = Mp - W;
+ uint32_t p1 = static_cast<uint32_t>(Mp.f >> -one.e);
+ uint64_t p2 = Mp.f & (one.f - 1);
+ int kappa = CountDecimalDigit32(p1);
+ *len = 0;
+
+ while (kappa > 0) {
+ uint32_t d;
+ switch (kappa) {
+ case 10: d = p1 / 1000000000; p1 %= 1000000000; break;
+ case 9: d = p1 / 100000000; p1 %= 100000000; break;
+ case 8: d = p1 / 10000000; p1 %= 10000000; break;
+ case 7: d = p1 / 1000000; p1 %= 1000000; break;
+ case 6: d = p1 / 100000; p1 %= 100000; break;
+ case 5: d = p1 / 10000; p1 %= 10000; break;
+ case 4: d = p1 / 1000; p1 %= 1000; break;
+ case 3: d = p1 / 100; p1 %= 100; break;
+ case 2: d = p1 / 10; p1 %= 10; break;
+ case 1: d = p1; p1 = 0; break;
+ default:
#if defined(_MSC_VER)
- __assume(0);
+ __assume(0);
#elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
- __builtin_unreachable();
+ __builtin_unreachable();
#else
- d = 0;
+ d = 0;
#endif
- }
- if (d || *len)
- buffer[(*len)++] = '0' + static_cast<char>(d);
- kappa--;
- uint64_t tmp = (static_cast<uint64_t>(p1) << -one.e) + p2;
- if (tmp <= delta) {
- *K += kappa;
- GrisuRound(buffer, *len, delta, tmp, static_cast<uint64_t>(kPow10[kappa]) << -one.e, wp_w.f);
- return;
- }
- }
-
- // kappa = 0
- for (;;) {
- p2 *= 10;
- delta *= 10;
- char d = static_cast<char>(p2 >> -one.e);
- if (d || *len)
- buffer[(*len)++] = '0' + d;
- p2 &= one.f - 1;
- kappa--;
- if (p2 < delta) {
- *K += kappa;
- GrisuRound(buffer, *len, delta, p2, one.f, wp_w.f * kPow10[-kappa]);
- return;
- }
- }
+ }
+ if (d || *len)
+ buffer[(*len)++] = '0' + static_cast<char>(d);
+ kappa--;
+ uint64_t tmp = (static_cast<uint64_t>(p1) << -one.e) + p2;
+ if (tmp <= delta) {
+ *K += kappa;
+ GrisuRound(buffer, *len, delta, tmp, static_cast<uint64_t>(kPow10[kappa]) << -one.e, wp_w.f);
+ return;
+ }
+ }
+
+ // kappa = 0
+ for (;;) {
+ p2 *= 10;
+ delta *= 10;
+ char d = static_cast<char>(p2 >> -one.e);
+ if (d || *len)
+ buffer[(*len)++] = '0' + d;
+ p2 &= one.f - 1;
+ kappa--;
+ if (p2 < delta) {
+ *K += kappa;
+ GrisuRound(buffer, *len, delta, p2, one.f, wp_w.f * kPow10[-kappa]);
+ return;
+ }
+ }
}
inline void Grisu2(double value, char* buffer, int* length, int* K) {
- const DiyFp v(value);
- DiyFp w_m, w_p;
- v.NormalizedBoundaries(&w_m, &w_p);
-
- const DiyFp c_mk = GetCachedPower(w_p.e, K);
- const DiyFp W = v.Normalize() * c_mk;
- DiyFp Wp = w_p * c_mk;
- DiyFp Wm = w_m * c_mk;
- Wm.f++;
- Wp.f--;
- DigitGen(W, Wp, Wp.f - Wm.f, buffer, length, K);
+ const DiyFp v(value);
+ DiyFp w_m, w_p;
+ v.NormalizedBoundaries(&w_m, &w_p);
+
+ const DiyFp c_mk = GetCachedPower(w_p.e, K);
+ const DiyFp W = v.Normalize() * c_mk;
+ DiyFp Wp = w_p * c_mk;
+ DiyFp Wm = w_m * c_mk;
+ Wm.f++;
+ Wp.f--;
+ DigitGen(W, Wp, Wp.f - Wm.f, buffer, length, K);
}
-//inline const char* GetDigitsLut() {
-// static const char cDigitsLut[200] = {
-// '0', '0', '0', '1', '0', '2', '0', '3', '0', '4', '0', '5', '0', '6', '0', '7', '0', '8', '0', '9',
-// '1', '0', '1', '1', '1', '2', '1', '3', '1', '4', '1', '5', '1', '6', '1', '7', '1', '8', '1', '9',
-// '2', '0', '2', '1', '2', '2', '2', '3', '2', '4', '2', '5', '2', '6', '2', '7', '2', '8', '2', '9',
-// '3', '0', '3', '1', '3', '2', '3', '3', '3', '4', '3', '5', '3', '6', '3', '7', '3', '8', '3', '9',
-// '4', '0', '4', '1', '4', '2', '4', '3', '4', '4', '4', '5', '4', '6', '4', '7', '4', '8', '4', '9',
-// '5', '0', '5', '1', '5', '2', '5', '3', '5', '4', '5', '5', '5', '6', '5', '7', '5', '8', '5', '9',
-// '6', '0', '6', '1', '6', '2', '6', '3', '6', '4', '6', '5', '6', '6', '6', '7', '6', '8', '6', '9',
-// '7', '0', '7', '1', '7', '2', '7', '3', '7', '4', '7', '5', '7', '6', '7', '7', '7', '8', '7', '9',
-// '8', '0', '8', '1', '8', '2', '8', '3', '8', '4', '8', '5', '8', '6', '8', '7', '8', '8', '8', '9',
-// '9', '0', '9', '1', '9', '2', '9', '3', '9', '4', '9', '5', '9', '6', '9', '7', '9', '8', '9', '9'
-// };
-// return cDigitsLut;
-//}
-
inline char* WriteExponent(int K, char* buffer) {
- if (K < 0) {
- *buffer++ = '-';
- K = -K;
- }
-
- if (K >= 100) {
- *buffer++ = '0' + static_cast<char>(K / 100);
- K %= 100;
- const char* d = GetDigitsLut() + K * 2;
- *buffer++ = d[0];
- *buffer++ = d[1];
- }
- else if (K >= 10) {
- const char* d = GetDigitsLut() + K * 2;
- *buffer++ = d[0];
- *buffer++ = d[1];
- }
- else
- *buffer++ = '0' + static_cast<char>(K);
-
- return buffer;
+ if (K < 0) {
+ *buffer++ = '-';
+ K = -K;
+ }
+
+ if (K >= 100) {
+ *buffer++ = '0' + static_cast<char>(K / 100);
+ K %= 100;
+ const char* d = GetDigitsLut() + K * 2;
+ *buffer++ = d[0];
+ *buffer++ = d[1];
+ }
+ else if (K >= 10) {
+ const char* d = GetDigitsLut() + K * 2;
+ *buffer++ = d[0];
+ *buffer++ = d[1];
+ }
+ else
+ *buffer++ = '0' + static_cast<char>(K);
+
+ return buffer;
}
inline char* Prettify(char* buffer, int length, int k) {
- const int kk = length + k; // 10^(kk-1) <= v < 10^kk
-
- if (length <= kk && kk <= 21) {
- // 1234e7 -> 12340000000
- for (int i = length; i < kk; i++)
- buffer[i] = '0';
- buffer[kk] = '.';
- buffer[kk + 1] = '0';
- return &buffer[kk + 2];
- }
- else if (0 < kk && kk <= 21) {
- // 1234e-2 -> 12.34
- memmove(&buffer[kk + 1], &buffer[kk], length - kk);
- buffer[kk] = '.';
- return &buffer[length + 1];
- }
- else if (-6 < kk && kk <= 0) {
- // 1234e-6 -> 0.001234
- const int offset = 2 - kk;
- memmove(&buffer[offset], &buffer[0], length);
- buffer[0] = '0';
- buffer[1] = '.';
- for (int i = 2; i < offset; i++)
- buffer[i] = '0';
- return &buffer[length + offset];
- }
- else if (length == 1) {
- // 1e30
- buffer[1] = 'e';
- return WriteExponent(kk - 1, &buffer[2]);
- }
- else {
- // 1234e30 -> 1.234e33
- memmove(&buffer[2], &buffer[1], length - 1);
- buffer[1] = '.';
- buffer[length + 1] = 'e';
- return WriteExponent(kk - 1, &buffer[0 + length + 2]);
- }
+ const int kk = length + k; // 10^(kk-1) <= v < 10^kk
+
+ if (length <= kk && kk <= 21) {
+ // 1234e7 -> 12340000000
+ for (int i = length; i < kk; i++)
+ buffer[i] = '0';
+ buffer[kk] = '.';
+ buffer[kk + 1] = '0';
+ return &buffer[kk + 2];
+ }
+ else if (0 < kk && kk <= 21) {
+ // 1234e-2 -> 12.34
+ memmove(&buffer[kk + 1], &buffer[kk], length - kk);
+ buffer[kk] = '.';
+ return &buffer[length + 1];
+ }
+ else if (-6 < kk && kk <= 0) {
+ // 1234e-6 -> 0.001234
+ const int offset = 2 - kk;
+ memmove(&buffer[offset], &buffer[0], length);
+ buffer[0] = '0';
+ buffer[1] = '.';
+ for (int i = 2; i < offset; i++)
+ buffer[i] = '0';
+ return &buffer[length + offset];
+ }
+ else if (length == 1) {
+ // 1e30
+ buffer[1] = 'e';
+ return WriteExponent(kk - 1, &buffer[2]);
+ }
+ else {
+ // 1234e30 -> 1.234e33
+ memmove(&buffer[2], &buffer[1], length - 1);
+ buffer[1] = '.';
+ buffer[length + 1] = 'e';
+ return WriteExponent(kk - 1, &buffer[0 + length + 2]);
+ }
}
inline char* dtoa(double value, char* buffer) {
- if (value == 0) {
- buffer[0] = '0';
- buffer[1] = '.';
- buffer[2] = '0';
- return &buffer[3];
- }
- else {
- if (value < 0) {
- *buffer++ = '-';
- value = -value;
- }
- int length, K;
- Grisu2(value, buffer, &length, &K);
- return Prettify(buffer, length, K);
- }
+ if (value == 0) {
+ buffer[0] = '0';
+ buffer[1] = '.';
+ buffer[2] = '0';
+ return &buffer[3];
+ }
+ else {
+ if (value < 0) {
+ *buffer++ = '-';
+ value = -value;
+ }
+ int length, K;
+ Grisu2(value, buffer, &length, &K);
+ return Prettify(buffer, length, K);
+ }
}
#ifdef __GNUC__
diff --git a/include/rapidjson/internal/itoa.h b/include/rapidjson/internal/itoa.h
index 157afb65..2ff199ac 100644
--- a/include/rapidjson/internal/itoa.h
+++ b/include/rapidjson/internal/itoa.h
@@ -1,12 +1,29 @@
+// Copyright (C) 2011 Milo Yip
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
#ifndef RAPIDJSON_ITOA_
#define RAPIDJSON_ITOA_
namespace rapidjson {
namespace internal {
-// Modified from https://github.com/miloyip/itoa-benchmark/blob/master/src/branchlut.cpp
-// API is changed to return the character passed the end of string, without writing '\0'
-
inline const char* GetDigitsLut() {
static const char cDigitsLut[200] = {
'0','0','0','1','0','2','0','3','0','4','0','5','0','6','0','7','0','8','0','9',
@@ -98,12 +115,12 @@ inline char* u32toa(uint32_t value, char* buffer) {
}
inline char* i32toa(int32_t value, char* buffer) {
- if (value < 0) {
- *buffer++ = '-';
- value = -value;
- }
+ if (value < 0) {
+ *buffer++ = '-';
+ value = -value;
+ }
- return u32toa(static_cast<uint32_t>(value), buffer);
+ return u32toa(static_cast<uint32_t>(value), buffer);
}
inline char* u64toa(uint64_t value, char* buffer) {
@@ -271,16 +288,16 @@ inline char* u64toa(uint64_t value, char* buffer) {
*buffer++ = cDigitsLut[d8 + 1];
}
- return buffer;
+ return buffer;
}
inline char* i64toa(int64_t value, char* buffer) {
- if (value < 0) {
- *buffer++ = '-';
- value = -value;
- }
+ if (value < 0) {
+ *buffer++ = '-';
+ value = -value;
+ }
- return u64toa(static_cast<uint64_t>(value), buffer);
+ return u64toa(static_cast<uint64_t>(value), buffer);
}
} // namespace internal
diff --git a/include/rapidjson/internal/meta.h b/include/rapidjson/internal/meta.h
index b8d3295e..62d5224d 100644
--- a/include/rapidjson/internal/meta.h
+++ b/include/rapidjson/internal/meta.h
@@ -1,3 +1,23 @@
+// Copyright (C) 2011 Milo Yip
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
#ifndef RAPIDJSON_INTERNAL_META_H_
#define RAPIDJSON_INTERNAL_META_H_
@@ -35,10 +55,10 @@ template <typename T> struct IsPointer<T*> : TrueType {};
template <typename CT, typename T>
struct IsMoreConst {
- enum { Value =
- ( IsSame< typename RemoveConst<CT>::Type, typename RemoveConst<T>::Type>::Value
- && ( IsConst<CT>::Value >= IsConst<T>::Value ) )
- };
+ enum { Value =
+ ( IsSame< typename RemoveConst<CT>::Type, typename RemoveConst<T>::Type>::Value
+ && ( IsConst<CT>::Value >= IsConst<T>::Value ) )
+ };
};
template <bool Condition, typename T = void> struct EnableIfCond;
@@ -60,15 +80,15 @@ template <typename T> struct RemoveSfinaeFptr {};
template <typename T> struct RemoveSfinaeFptr<SfinaeResultTag&(*)(T)> { typedef T Type; };
#define RAPIDJSON_REMOVEFPTR_(type) \
- typename ::rapidjson::internal::RemoveSfinaeFptr \
- < ::rapidjson::internal::SfinaeResultTag&(*) type>::Type
+ typename ::rapidjson::internal::RemoveSfinaeFptr \
+ < ::rapidjson::internal::SfinaeResultTag&(*) type>::Type
#define RAPIDJSON_ENABLEIF(cond) \
- typename ::rapidjson::internal::EnableIf \
- <RAPIDJSON_REMOVEFPTR_(cond)>::Type * = NULL
+ typename ::rapidjson::internal::EnableIf \
+ <RAPIDJSON_REMOVEFPTR_(cond)>::Type * = NULL
#define RAPIDJSON_DISABLEIF_RETURN(cond,returntype) \
- typename ::rapidjson::internal::DisableIf<cond,returntype>::Type
+ typename ::rapidjson::internal::DisableIf<cond,returntype>::Type
} // namespace internal
} // namespace rapidjson
diff --git a/include/rapidjson/internal/pow10.h b/include/rapidjson/internal/pow10.h
index d6b92f08..72e0dac9 100644
--- a/include/rapidjson/internal/pow10.h
+++ b/include/rapidjson/internal/pow10.h
@@ -1,3 +1,23 @@
+// Copyright (C) 2011 Milo Yip
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
#ifndef RAPIDJSON_POW10_
#define RAPIDJSON_POW10_
@@ -6,31 +26,31 @@ namespace internal {
//! Computes integer powers of 10 in double (10.0^n).
/*! This function uses lookup table for fast and accurate results.
- \param n non-negative exponent. Must <= 308.
- \return 10.0^n
+ \param n non-negative exponent. Must <= 308.
+ \return 10.0^n
*/
inline double Pow10(int n) {
- static const double e[] = { // 1e-0...1e308: 309 * 8 bytes = 2472 bytes
- 1e+0,
- 1e+1, 1e+2, 1e+3, 1e+4, 1e+5, 1e+6, 1e+7, 1e+8, 1e+9, 1e+10, 1e+11, 1e+12, 1e+13, 1e+14, 1e+15, 1e+16, 1e+17, 1e+18, 1e+19, 1e+20,
- 1e+21, 1e+22, 1e+23, 1e+24, 1e+25, 1e+26, 1e+27, 1e+28, 1e+29, 1e+30, 1e+31, 1e+32, 1e+33, 1e+34, 1e+35, 1e+36, 1e+37, 1e+38, 1e+39, 1e+40,
- 1e+41, 1e+42, 1e+43, 1e+44, 1e+45, 1e+46, 1e+47, 1e+48, 1e+49, 1e+50, 1e+51, 1e+52, 1e+53, 1e+54, 1e+55, 1e+56, 1e+57, 1e+58, 1e+59, 1e+60,
- 1e+61, 1e+62, 1e+63, 1e+64, 1e+65, 1e+66, 1e+67, 1e+68, 1e+69, 1e+70, 1e+71, 1e+72, 1e+73, 1e+74, 1e+75, 1e+76, 1e+77, 1e+78, 1e+79, 1e+80,
- 1e+81, 1e+82, 1e+83, 1e+84, 1e+85, 1e+86, 1e+87, 1e+88, 1e+89, 1e+90, 1e+91, 1e+92, 1e+93, 1e+94, 1e+95, 1e+96, 1e+97, 1e+98, 1e+99, 1e+100,
- 1e+101,1e+102,1e+103,1e+104,1e+105,1e+106,1e+107,1e+108,1e+109,1e+110,1e+111,1e+112,1e+113,1e+114,1e+115,1e+116,1e+117,1e+118,1e+119,1e+120,
- 1e+121,1e+122,1e+123,1e+124,1e+125,1e+126,1e+127,1e+128,1e+129,1e+130,1e+131,1e+132,1e+133,1e+134,1e+135,1e+136,1e+137,1e+138,1e+139,1e+140,
- 1e+141,1e+142,1e+143,1e+144,1e+145,1e+146,1e+147,1e+148,1e+149,1e+150,1e+151,1e+152,1e+153,1e+154,1e+155,1e+156,1e+157,1e+158,1e+159,1e+160,
- 1e+161,1e+162,1e+163,1e+164,1e+165,1e+166,1e+167,1e+168,1e+169,1e+170,1e+171,1e+172,1e+173,1e+174,1e+175,1e+176,1e+177,1e+178,1e+179,1e+180,
- 1e+181,1e+182,1e+183,1e+184,1e+185,1e+186,1e+187,1e+188,1e+189,1e+190,1e+191,1e+192,1e+193,1e+194,1e+195,1e+196,1e+197,1e+198,1e+199,1e+200,
- 1e+201,1e+202,1e+203,1e+204,1e+205,1e+206,1e+207,1e+208,1e+209,1e+210,1e+211,1e+212,1e+213,1e+214,1e+215,1e+216,1e+217,1e+218,1e+219,1e+220,
- 1e+221,1e+222,1e+223,1e+224,1e+225,1e+226,1e+227,1e+228,1e+229,1e+230,1e+231,1e+232,1e+233,1e+234,1e+235,1e+236,1e+237,1e+238,1e+239,1e+240,
- 1e+241,1e+242,1e+243,1e+244,1e+245,1e+246,1e+247,1e+248,1e+249,1e+250,1e+251,1e+252,1e+253,1e+254,1e+255,1e+256,1e+257,1e+258,1e+259,1e+260,
- 1e+261,1e+262,1e+263,1e+264,1e+265,1e+266,1e+267,1e+268,1e+269,1e+270,1e+271,1e+272,1e+273,1e+274,1e+275,1e+276,1e+277,1e+278,1e+279,1e+280,
- 1e+281,1e+282,1e+283,1e+284,1e+285,1e+286,1e+287,1e+288,1e+289,1e+290,1e+291,1e+292,1e+293,1e+294,1e+295,1e+296,1e+297,1e+298,1e+299,1e+300,
- 1e+301,1e+302,1e+303,1e+304,1e+305,1e+306,1e+307,1e+308
- };
- RAPIDJSON_ASSERT(n >= 0 && n <= 308);
- return e[n];
+ static const double e[] = { // 1e-0...1e308: 309 * 8 bytes = 2472 bytes
+ 1e+0,
+ 1e+1, 1e+2, 1e+3, 1e+4, 1e+5, 1e+6, 1e+7, 1e+8, 1e+9, 1e+10, 1e+11, 1e+12, 1e+13, 1e+14, 1e+15, 1e+16, 1e+17, 1e+18, 1e+19, 1e+20,
+ 1e+21, 1e+22, 1e+23, 1e+24, 1e+25, 1e+26, 1e+27, 1e+28, 1e+29, 1e+30, 1e+31, 1e+32, 1e+33, 1e+34, 1e+35, 1e+36, 1e+37, 1e+38, 1e+39, 1e+40,
+ 1e+41, 1e+42, 1e+43, 1e+44, 1e+45, 1e+46, 1e+47, 1e+48, 1e+49, 1e+50, 1e+51, 1e+52, 1e+53, 1e+54, 1e+55, 1e+56, 1e+57, 1e+58, 1e+59, 1e+60,
+ 1e+61, 1e+62, 1e+63, 1e+64, 1e+65, 1e+66, 1e+67, 1e+68, 1e+69, 1e+70, 1e+71, 1e+72, 1e+73, 1e+74, 1e+75, 1e+76, 1e+77, 1e+78, 1e+79, 1e+80,
+ 1e+81, 1e+82, 1e+83, 1e+84, 1e+85, 1e+86, 1e+87, 1e+88, 1e+89, 1e+90, 1e+91, 1e+92, 1e+93, 1e+94, 1e+95, 1e+96, 1e+97, 1e+98, 1e+99, 1e+100,
+ 1e+101,1e+102,1e+103,1e+104,1e+105,1e+106,1e+107,1e+108,1e+109,1e+110,1e+111,1e+112,1e+113,1e+114,1e+115,1e+116,1e+117,1e+118,1e+119,1e+120,
+ 1e+121,1e+122,1e+123,1e+124,1e+125,1e+126,1e+127,1e+128,1e+129,1e+130,1e+131,1e+132,1e+133,1e+134,1e+135,1e+136,1e+137,1e+138,1e+139,1e+140,
+ 1e+141,1e+142,1e+143,1e+144,1e+145,1e+146,1e+147,1e+148,1e+149,1e+150,1e+151,1e+152,1e+153,1e+154,1e+155,1e+156,1e+157,1e+158,1e+159,1e+160,
+ 1e+161,1e+162,1e+163,1e+164,1e+165,1e+166,1e+167,1e+168,1e+169,1e+170,1e+171,1e+172,1e+173,1e+174,1e+175,1e+176,1e+177,1e+178,1e+179,1e+180,
+ 1e+181,1e+182,1e+183,1e+184,1e+185,1e+186,1e+187,1e+188,1e+189,1e+190,1e+191,1e+192,1e+193,1e+194,1e+195,1e+196,1e+197,1e+198,1e+199,1e+200,
+ 1e+201,1e+202,1e+203,1e+204,1e+205,1e+206,1e+207,1e+208,1e+209,1e+210,1e+211,1e+212,1e+213,1e+214,1e+215,1e+216,1e+217,1e+218,1e+219,1e+220,
+ 1e+221,1e+222,1e+223,1e+224,1e+225,1e+226,1e+227,1e+228,1e+229,1e+230,1e+231,1e+232,1e+233,1e+234,1e+235,1e+236,1e+237,1e+238,1e+239,1e+240,
+ 1e+241,1e+242,1e+243,1e+244,1e+245,1e+246,1e+247,1e+248,1e+249,1e+250,1e+251,1e+252,1e+253,1e+254,1e+255,1e+256,1e+257,1e+258,1e+259,1e+260,
+ 1e+261,1e+262,1e+263,1e+264,1e+265,1e+266,1e+267,1e+268,1e+269,1e+270,1e+271,1e+272,1e+273,1e+274,1e+275,1e+276,1e+277,1e+278,1e+279,1e+280,
+ 1e+281,1e+282,1e+283,1e+284,1e+285,1e+286,1e+287,1e+288,1e+289,1e+290,1e+291,1e+292,1e+293,1e+294,1e+295,1e+296,1e+297,1e+298,1e+299,1e+300,
+ 1e+301,1e+302,1e+303,1e+304,1e+305,1e+306,1e+307,1e+308
+ };
+ RAPIDJSON_ASSERT(n >= 0 && n <= 308);
+ return e[n];
}
} // namespace internal
diff --git a/include/rapidjson/internal/stack.h b/include/rapidjson/internal/stack.h
index 85484655..4ab84b1a 100644
--- a/include/rapidjson/internal/stack.h
+++ b/include/rapidjson/internal/stack.h
@@ -1,3 +1,23 @@
+// Copyright (C) 2011 Milo Yip
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
#ifndef RAPIDJSON_INTERNAL_STACK_H_
#define RAPIDJSON_INTERNAL_STACK_H_
@@ -13,79 +33,79 @@ namespace internal {
template <typename Allocator>
class Stack {
public:
- Stack(Allocator* allocator, size_t stack_capacity) : allocator_(allocator), own_allocator_(0), stack_(0), stack_top_(0), stack_end_(0), stack_capacity_(stack_capacity) {
- RAPIDJSON_ASSERT(stack_capacity_ > 0);
- if (!allocator_)
- own_allocator_ = allocator_ = new Allocator();
- stack_top_ = stack_ = (char*)allocator_->Malloc(stack_capacity_);
- stack_end_ = stack_ + stack_capacity_;
- }
-
- ~Stack() {
- Allocator::Free(stack_);
- delete own_allocator_; // Only delete if it is owned by the stack
- }
-
- void Clear() { /*stack_top_ = 0;*/ stack_top_ = stack_; }
-
- // Optimization note: try to minimize the size of this function for force inline.
- // Expansion is run very infrequently, so it is moved to another (probably non-inline) function.
- template<typename T>
- RAPIDJSON_FORCEINLINE T* Push(size_t count = 1) {
- // Expand the stack if needed
- if (stack_top_ + sizeof(T) * count >= stack_end_)
- Expand<T>(count);
-
- T* ret = reinterpret_cast<T*>(stack_top_);
- stack_top_ += sizeof(T) * count;
- return ret;
- }
-
- template<typename T>
- T* Pop(size_t count) {
- RAPIDJSON_ASSERT(GetSize() >= count * sizeof(T));
- stack_top_ -= count * sizeof(T);
- return reinterpret_cast<T*>(stack_top_);
- }
-
- template<typename T>
- T* Top() {
- RAPIDJSON_ASSERT(GetSize() >= sizeof(T));
- return reinterpret_cast<T*>(stack_top_ - sizeof(T));
- }
-
- template<typename T>
- T* Bottom() { return (T*)stack_; }
-
- Allocator& GetAllocator() { return *allocator_; }
- bool Empty() const { return stack_top_ == stack_; }
- size_t GetSize() const { return static_cast<size_t>(stack_top_ - stack_); }
- size_t GetCapacity() const { return stack_capacity_; }
+ Stack(Allocator* allocator, size_t stack_capacity) : allocator_(allocator), own_allocator_(0), stack_(0), stack_top_(0), stack_end_(0), stack_capacity_(stack_capacity) {
+ RAPIDJSON_ASSERT(stack_capacity_ > 0);
+ if (!allocator_)
+ own_allocator_ = allocator_ = new Allocator();
+ stack_top_ = stack_ = (char*)allocator_->Malloc(stack_capacity_);
+ stack_end_ = stack_ + stack_capacity_;
+ }
+
+ ~Stack() {
+ Allocator::Free(stack_);
+ delete own_allocator_; // Only delete if it is owned by the stack
+ }
+
+ void Clear() { /*stack_top_ = 0;*/ stack_top_ = stack_; }
+
+ // Optimization note: try to minimize the size of this function for force inline.
+ // Expansion is run very infrequently, so it is moved to another (probably non-inline) function.
+ template<typename T>
+ RAPIDJSON_FORCEINLINE T* Push(size_t count = 1) {
+ // Expand the stack if needed
+ if (stack_top_ + sizeof(T) * count >= stack_end_)
+ Expand<T>(count);
+
+ T* ret = reinterpret_cast<T*>(stack_top_);
+ stack_top_ += sizeof(T) * count;
+ return ret;
+ }
+
+ template<typename T>
+ T* Pop(size_t count) {
+ RAPIDJSON_ASSERT(GetSize() >= count * sizeof(T));
+ stack_top_ -= count * sizeof(T);
+ return reinterpret_cast<T*>(stack_top_);
+ }
+
+ template<typename T>
+ T* Top() {
+ RAPIDJSON_ASSERT(GetSize() >= sizeof(T));
+ return reinterpret_cast<T*>(stack_top_ - sizeof(T));
+ }
+
+ template<typename T>
+ T* Bottom() { return (T*)stack_; }
+
+ Allocator& GetAllocator() { return *allocator_; }
+ bool Empty() const { return stack_top_ == stack_; }
+ size_t GetSize() const { return static_cast<size_t>(stack_top_ - stack_); }
+ size_t GetCapacity() const { return stack_capacity_; }
private:
- template<typename T>
- void Expand(size_t count) {
- size_t new_capacity = stack_capacity_ * 2;
- size_t size = GetSize();
- size_t new_size = GetSize() + sizeof(T) * count;
- if (new_capacity < new_size)
- new_capacity = new_size;
- stack_ = (char*)allocator_->Realloc(stack_, stack_capacity_, new_capacity);
- stack_capacity_ = new_capacity;
- stack_top_ = stack_ + size;
- stack_end_ = stack_ + stack_capacity_;
- }
-
- // Prohibit copy constructor & assignment operator.
- Stack(const Stack&);
- Stack& operator=(const Stack&);
-
- Allocator* allocator_;
- Allocator* own_allocator_;
- char *stack_;
- char *stack_top_;
- char *stack_end_;
- size_t stack_capacity_;
+ template<typename T>
+ void Expand(size_t count) {
+ size_t new_capacity = stack_capacity_ * 2;
+ size_t size = GetSize();
+ size_t new_size = GetSize() + sizeof(T) * count;
+ if (new_capacity < new_size)
+ new_capacity = new_size;
+ stack_ = (char*)allocator_->Realloc(stack_, stack_capacity_, new_capacity);
+ stack_capacity_ = new_capacity;
+ stack_top_ = stack_ + size;
+ stack_end_ = stack_ + stack_capacity_;
+ }
+
+ // Prohibit copy constructor & assignment operator.
+ Stack(const Stack&);
+ Stack& operator=(const Stack&);
+
+ Allocator* allocator_;
+ Allocator* own_allocator_;
+ char *stack_;
+ char *stack_top_;
+ char *stack_end_;
+ size_t stack_capacity_;
};
} // namespace internal
diff --git a/include/rapidjson/internal/strfunc.h b/include/rapidjson/internal/strfunc.h
index 0a20c56f..80adcb6b 100644
--- a/include/rapidjson/internal/strfunc.h
+++ b/include/rapidjson/internal/strfunc.h
@@ -1,3 +1,23 @@
+// Copyright (C) 2011 Milo Yip
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
#ifndef RAPIDJSON_INTERNAL_STRFUNC_H_
#define RAPIDJSON_INTERNAL_STRFUNC_H_
@@ -5,16 +25,16 @@ namespace rapidjson {
namespace internal {
//! Custom strlen() which works on different character types.
-/*! \tparam Ch Character type (e.g. char, wchar_t, short)
- \param s Null-terminated input string.
- \return Number of characters in the string.
- \note This has the same semantics as strlen(), the return value is not number of Unicode codepoints.
+/*! \tparam Ch Character type (e.g. char, wchar_t, short)
+ \param s Null-terminated input string.
+ \return Number of characters in the string.
+ \note This has the same semantics as strlen(), the return value is not number of Unicode codepoints.
*/
template <typename Ch>
inline SizeType StrLen(const Ch* s) {
- const Ch* p = s;
- while (*p) ++p;
- return SizeType(p - s);
+ const Ch* p = s;
+ while (*p) ++p;
+ return SizeType(p - s);
}
} // namespace internal