Maxim Integrated / Mbed OS MAXREFDES155#

DeepCover Embedded Security in IoT: Public-key Secured Data Paths

Dependencies:   MaximInterface

The MAXREFDES155# is an internet-of-things (IoT) embedded-security reference design, built to authenticate and control a sensing node using elliptic-curve-based public-key cryptography with control and notification from a web server.

The hardware includes an ARM® mbed™ shield and attached sensor endpoint. The shield contains a DS2476 DeepCover® ECDSA/SHA-2 coprocessor, Wifi communication, LCD push-button controls, and status LEDs. The sensor endpoint is attached to the shield using a 300mm cable and contains a DS28C36 DeepCover ECDSA/SHA-2 authenticator, IR-thermal sensor, and aiming laser for the IR sensor. The MAXREFDES155# is equipped with a standard Arduino® form-factor shield connector for immediate testing using an mbed board such as the MAX32600MBED#. The combination of these two devices represent an IoT device. Communication to the web server is accomplished with the shield Wifi circuitry. Communication from the shield to the attached sensor module is accomplished over I2C . The sensor module represents an IoT endpoint that generates small data with a requirement for message authenticity/integrity and secure on/off operational control.

The design is hierarchical with each mbed platform and shield communicating data from the sensor node to a web server that maintains a centralized log and dispatches notifications as necessary. The simplicity of this design enables rapid integration into any star-topology IoT network to provide security with the low overhead and cost provided by the ECDSA-P256 asymmetric-key and SHA-256 symmetric-key algorithms.

More information about the MAXREFDES155# is available on the Maxim Integrated website.

rapidjson/writer.h@15:75404fab3615, 2018-01-19 (annotated)

Committer:
IanBenzMaxim
Date:
Fri Jan 19 10:28:27 2018 -0600
Revision:
15:75404fab3615
Parent:
0:33d4e66780c0 
Updated MaximInterface revision.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
IanBenzMaxim 0:33d4e66780c0 1 // Tencent is pleased to support the open source community by making RapidJSON available.
IanBenzMaxim 0:33d4e66780c0 2 //
IanBenzMaxim 0:33d4e66780c0 3 // Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
IanBenzMaxim 0:33d4e66780c0 4 //
IanBenzMaxim 0:33d4e66780c0 5 // Licensed under the MIT License (the "License"); you may not use this file except
IanBenzMaxim 0:33d4e66780c0 6 // in compliance with the License. You may obtain a copy of the License at
IanBenzMaxim 0:33d4e66780c0 7 //
IanBenzMaxim 0:33d4e66780c0 8 // http://opensource.org/licenses/MIT
IanBenzMaxim 0:33d4e66780c0 9 //
IanBenzMaxim 0:33d4e66780c0 10 // Unless required by applicable law or agreed to in writing, software distributed
IanBenzMaxim 0:33d4e66780c0 11 // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
IanBenzMaxim 0:33d4e66780c0 12 // CONDITIONS OF ANY KIND, either express or implied. See the License for the
IanBenzMaxim 0:33d4e66780c0 13 // specific language governing permissions and limitations under the License.
IanBenzMaxim 0:33d4e66780c0 14
IanBenzMaxim 0:33d4e66780c0 15 #ifndef RAPIDJSON_WRITER_H_
IanBenzMaxim 0:33d4e66780c0 16 #define RAPIDJSON_WRITER_H_
IanBenzMaxim 0:33d4e66780c0 17
IanBenzMaxim 0:33d4e66780c0 18 #include "stream.h"
IanBenzMaxim 0:33d4e66780c0 19 #include "internal/stack.h"
IanBenzMaxim 0:33d4e66780c0 20 #include "internal/strfunc.h"
IanBenzMaxim 0:33d4e66780c0 21 #include "internal/dtoa.h"
IanBenzMaxim 0:33d4e66780c0 22 #include "internal/itoa.h"
IanBenzMaxim 0:33d4e66780c0 23 #include "stringbuffer.h"
IanBenzMaxim 0:33d4e66780c0 24 #include <new> // placement new
IanBenzMaxim 0:33d4e66780c0 25
IanBenzMaxim 0:33d4e66780c0 26 #if defined(RAPIDJSON_SIMD) && defined(_MSC_VER)
IanBenzMaxim 0:33d4e66780c0 27 #include <intrin.h>
IanBenzMaxim 0:33d4e66780c0 28 #pragma intrinsic(_BitScanForward)
IanBenzMaxim 0:33d4e66780c0 29 #endif
IanBenzMaxim 0:33d4e66780c0 30 #ifdef RAPIDJSON_SSE42
IanBenzMaxim 0:33d4e66780c0 31 #include <nmmintrin.h>
IanBenzMaxim 0:33d4e66780c0 32 #elif defined(RAPIDJSON_SSE2)
IanBenzMaxim 0:33d4e66780c0 33 #include <emmintrin.h>
IanBenzMaxim 0:33d4e66780c0 34 #endif
IanBenzMaxim 0:33d4e66780c0 35
IanBenzMaxim 0:33d4e66780c0 36 #ifdef _MSC_VER
IanBenzMaxim 0:33d4e66780c0 37 RAPIDJSON_DIAG_PUSH
IanBenzMaxim 0:33d4e66780c0 38 RAPIDJSON_DIAG_OFF(4127) // conditional expression is constant
IanBenzMaxim 0:33d4e66780c0 39 #endif
IanBenzMaxim 0:33d4e66780c0 40
IanBenzMaxim 0:33d4e66780c0 41 #ifdef __clang__
IanBenzMaxim 0:33d4e66780c0 42 RAPIDJSON_DIAG_PUSH
IanBenzMaxim 0:33d4e66780c0 43 RAPIDJSON_DIAG_OFF(padded)
IanBenzMaxim 0:33d4e66780c0 44 RAPIDJSON_DIAG_OFF(unreachable-code)
IanBenzMaxim 0:33d4e66780c0 45 RAPIDJSON_DIAG_OFF(c++98-compat)
IanBenzMaxim 0:33d4e66780c0 46 #endif
IanBenzMaxim 0:33d4e66780c0 47
IanBenzMaxim 0:33d4e66780c0 48 RAPIDJSON_NAMESPACE_BEGIN
IanBenzMaxim 0:33d4e66780c0 49
IanBenzMaxim 0:33d4e66780c0 50 ///////////////////////////////////////////////////////////////////////////////
IanBenzMaxim 0:33d4e66780c0 51 // WriteFlag
IanBenzMaxim 0:33d4e66780c0 52
IanBenzMaxim 0:33d4e66780c0 53 /*! \def RAPIDJSON_WRITE_DEFAULT_FLAGS
IanBenzMaxim 0:33d4e66780c0 54 \ingroup RAPIDJSON_CONFIG
IanBenzMaxim 0:33d4e66780c0 55 \brief User-defined kWriteDefaultFlags definition.
IanBenzMaxim 0:33d4e66780c0 56
IanBenzMaxim 0:33d4e66780c0 57 User can define this as any \c WriteFlag combinations.
IanBenzMaxim 0:33d4e66780c0 58 */
IanBenzMaxim 0:33d4e66780c0 59 #ifndef RAPIDJSON_WRITE_DEFAULT_FLAGS
IanBenzMaxim 0:33d4e66780c0 60 #define RAPIDJSON_WRITE_DEFAULT_FLAGS kWriteNoFlags
IanBenzMaxim 0:33d4e66780c0 61 #endif
IanBenzMaxim 0:33d4e66780c0 62
IanBenzMaxim 0:33d4e66780c0 63 //! Combination of writeFlags
IanBenzMaxim 0:33d4e66780c0 64 enum WriteFlag {
IanBenzMaxim 0:33d4e66780c0 65 kWriteNoFlags = 0, //!< No flags are set.
IanBenzMaxim 0:33d4e66780c0 66 kWriteValidateEncodingFlag = 1, //!< Validate encoding of JSON strings.
IanBenzMaxim 0:33d4e66780c0 67 kWriteNanAndInfFlag = 2, //!< Allow writing of Infinity, -Infinity and NaN.
IanBenzMaxim 0:33d4e66780c0 68 kWriteDefaultFlags = RAPIDJSON_WRITE_DEFAULT_FLAGS //!< Default write flags. Can be customized by defining RAPIDJSON_WRITE_DEFAULT_FLAGS
IanBenzMaxim 0:33d4e66780c0 69 };
IanBenzMaxim 0:33d4e66780c0 70
IanBenzMaxim 0:33d4e66780c0 71 //! JSON writer
IanBenzMaxim 0:33d4e66780c0 72 /*! Writer implements the concept Handler.
IanBenzMaxim 0:33d4e66780c0 73 It generates JSON text by events to an output os.
IanBenzMaxim 0:33d4e66780c0 74
IanBenzMaxim 0:33d4e66780c0 75 User may programmatically calls the functions of a writer to generate JSON text.
IanBenzMaxim 0:33d4e66780c0 76
IanBenzMaxim 0:33d4e66780c0 77 On the other side, a writer can also be passed to objects that generates events,
IanBenzMaxim 0:33d4e66780c0 78
IanBenzMaxim 0:33d4e66780c0 79 for example Reader::Parse() and Document::Accept().
IanBenzMaxim 0:33d4e66780c0 80
IanBenzMaxim 0:33d4e66780c0 81 \tparam OutputStream Type of output stream.
IanBenzMaxim 0:33d4e66780c0 82 \tparam SourceEncoding Encoding of source string.
IanBenzMaxim 0:33d4e66780c0 83 \tparam TargetEncoding Encoding of output stream.
IanBenzMaxim 0:33d4e66780c0 84 \tparam StackAllocator Type of allocator for allocating memory of stack.
IanBenzMaxim 0:33d4e66780c0 85 \note implements Handler concept
IanBenzMaxim 0:33d4e66780c0 86 */
IanBenzMaxim 0:33d4e66780c0 87 template<typename OutputStream, typename SourceEncoding = UTF8<>, typename TargetEncoding = UTF8<>, typename StackAllocator = CrtAllocator, unsigned writeFlags = kWriteDefaultFlags>
IanBenzMaxim 0:33d4e66780c0 88 class Writer {
IanBenzMaxim 0:33d4e66780c0 89 public:
IanBenzMaxim 0:33d4e66780c0 90 typedef typename SourceEncoding::Ch Ch;
IanBenzMaxim 0:33d4e66780c0 91
IanBenzMaxim 0:33d4e66780c0 92 static const int kDefaultMaxDecimalPlaces = 324;
IanBenzMaxim 0:33d4e66780c0 93
IanBenzMaxim 0:33d4e66780c0 94 //! Constructor
IanBenzMaxim 0:33d4e66780c0 95 /*! \param os Output stream.
IanBenzMaxim 0:33d4e66780c0 96 \param stackAllocator User supplied allocator. If it is null, it will create a private one.
IanBenzMaxim 0:33d4e66780c0 97 \param levelDepth Initial capacity of stack.
IanBenzMaxim 0:33d4e66780c0 98 */
IanBenzMaxim 0:33d4e66780c0 99 explicit
IanBenzMaxim 0:33d4e66780c0 100 Writer(OutputStream& os, StackAllocator* stackAllocator = 0, size_t levelDepth = kDefaultLevelDepth) :
IanBenzMaxim 0:33d4e66780c0 101 os_(&os), level_stack_(stackAllocator, levelDepth * sizeof(Level)), maxDecimalPlaces_(kDefaultMaxDecimalPlaces), hasRoot_(false) {}
IanBenzMaxim 0:33d4e66780c0 102
IanBenzMaxim 0:33d4e66780c0 103 explicit
IanBenzMaxim 0:33d4e66780c0 104 Writer(StackAllocator* allocator = 0, size_t levelDepth = kDefaultLevelDepth) :
IanBenzMaxim 0:33d4e66780c0 105 os_(0), level_stack_(allocator, levelDepth * sizeof(Level)), maxDecimalPlaces_(kDefaultMaxDecimalPlaces), hasRoot_(false) {}
IanBenzMaxim 0:33d4e66780c0 106
IanBenzMaxim 0:33d4e66780c0 107 #if RAPIDJSON_HAS_CXX11_RVALUE_REFS
IanBenzMaxim 0:33d4e66780c0 108 Writer(Writer&& rhs) :
IanBenzMaxim 0:33d4e66780c0 109 os_(rhs.os_), level_stack_(std::move(rhs.level_stack_)), maxDecimalPlaces_(rhs.maxDecimalPlaces_), hasRoot_(rhs.hasRoot_) {
IanBenzMaxim 0:33d4e66780c0 110 rhs.os_ = 0;
IanBenzMaxim 0:33d4e66780c0 111 }
IanBenzMaxim 0:33d4e66780c0 112 #endif
IanBenzMaxim 0:33d4e66780c0 113
IanBenzMaxim 0:33d4e66780c0 114 //! Reset the writer with a new stream.
IanBenzMaxim 0:33d4e66780c0 115 /*!
IanBenzMaxim 0:33d4e66780c0 116 This function reset the writer with a new stream and default settings,
IanBenzMaxim 0:33d4e66780c0 117 in order to make a Writer object reusable for output multiple JSONs.
IanBenzMaxim 0:33d4e66780c0 118
IanBenzMaxim 0:33d4e66780c0 119 \param os New output stream.
IanBenzMaxim 0:33d4e66780c0 120 \code
IanBenzMaxim 0:33d4e66780c0 121 Writer<OutputStream> writer(os1);
IanBenzMaxim 0:33d4e66780c0 122 writer.StartObject();
IanBenzMaxim 0:33d4e66780c0 123 // ...
IanBenzMaxim 0:33d4e66780c0 124 writer.EndObject();
IanBenzMaxim 0:33d4e66780c0 125
IanBenzMaxim 0:33d4e66780c0 126 writer.Reset(os2);
IanBenzMaxim 0:33d4e66780c0 127 writer.StartObject();
IanBenzMaxim 0:33d4e66780c0 128 // ...
IanBenzMaxim 0:33d4e66780c0 129 writer.EndObject();
IanBenzMaxim 0:33d4e66780c0 130 \endcode
IanBenzMaxim 0:33d4e66780c0 131 */
IanBenzMaxim 0:33d4e66780c0 132 void Reset(OutputStream& os) {
IanBenzMaxim 0:33d4e66780c0 133 os_ = &os;
IanBenzMaxim 0:33d4e66780c0 134 hasRoot_ = false;
IanBenzMaxim 0:33d4e66780c0 135 level_stack_.Clear();
IanBenzMaxim 0:33d4e66780c0 136 }
IanBenzMaxim 0:33d4e66780c0 137
IanBenzMaxim 0:33d4e66780c0 138 //! Checks whether the output is a complete JSON.
IanBenzMaxim 0:33d4e66780c0 139 /*!
IanBenzMaxim 0:33d4e66780c0 140 A complete JSON has a complete root object or array.
IanBenzMaxim 0:33d4e66780c0 141 */
IanBenzMaxim 0:33d4e66780c0 142 bool IsComplete() const {
IanBenzMaxim 0:33d4e66780c0 143 return hasRoot_ && level_stack_.Empty();
IanBenzMaxim 0:33d4e66780c0 144 }
IanBenzMaxim 0:33d4e66780c0 145
IanBenzMaxim 0:33d4e66780c0 146 int GetMaxDecimalPlaces() const {
IanBenzMaxim 0:33d4e66780c0 147 return maxDecimalPlaces_;
IanBenzMaxim 0:33d4e66780c0 148 }
IanBenzMaxim 0:33d4e66780c0 149
IanBenzMaxim 0:33d4e66780c0 150 //! Sets the maximum number of decimal places for double output.
IanBenzMaxim 0:33d4e66780c0 151 /*!
IanBenzMaxim 0:33d4e66780c0 152 This setting truncates the output with specified number of decimal places.
IanBenzMaxim 0:33d4e66780c0 153
IanBenzMaxim 0:33d4e66780c0 154 For example,
IanBenzMaxim 0:33d4e66780c0 155
IanBenzMaxim 0:33d4e66780c0 156 \code
IanBenzMaxim 0:33d4e66780c0 157 writer.SetMaxDecimalPlaces(3);
IanBenzMaxim 0:33d4e66780c0 158 writer.StartArray();
IanBenzMaxim 0:33d4e66780c0 159 writer.Double(0.12345); // "0.123"
IanBenzMaxim 0:33d4e66780c0 160 writer.Double(0.0001); // "0.0"
IanBenzMaxim 0:33d4e66780c0 161 writer.Double(1.234567890123456e30); // "1.234567890123456e30" (do not truncate significand for positive exponent)
IanBenzMaxim 0:33d4e66780c0 162 writer.Double(1.23e-4); // "0.0" (do truncate significand for negative exponent)
IanBenzMaxim 0:33d4e66780c0 163 writer.EndArray();
IanBenzMaxim 0:33d4e66780c0 164 \endcode
IanBenzMaxim 0:33d4e66780c0 165
IanBenzMaxim 0:33d4e66780c0 166 The default setting does not truncate any decimal places. You can restore to this setting by calling
IanBenzMaxim 0:33d4e66780c0 167 \code
IanBenzMaxim 0:33d4e66780c0 168 writer.SetMaxDecimalPlaces(Writer::kDefaultMaxDecimalPlaces);
IanBenzMaxim 0:33d4e66780c0 169 \endcode
IanBenzMaxim 0:33d4e66780c0 170 */
IanBenzMaxim 0:33d4e66780c0 171 void SetMaxDecimalPlaces(int maxDecimalPlaces) {
IanBenzMaxim 0:33d4e66780c0 172 maxDecimalPlaces_ = maxDecimalPlaces;
IanBenzMaxim 0:33d4e66780c0 173 }
IanBenzMaxim 0:33d4e66780c0 174
IanBenzMaxim 0:33d4e66780c0 175 /*!@name Implementation of Handler
IanBenzMaxim 0:33d4e66780c0 176 \see Handler
IanBenzMaxim 0:33d4e66780c0 177 */
IanBenzMaxim 0:33d4e66780c0 178 //@{
IanBenzMaxim 0:33d4e66780c0 179
IanBenzMaxim 0:33d4e66780c0 180 bool Null() { Prefix(kNullType); return EndValue(WriteNull()); }
IanBenzMaxim 0:33d4e66780c0 181 bool Bool(bool b) { Prefix(b ? kTrueType : kFalseType); return EndValue(WriteBool(b)); }
IanBenzMaxim 0:33d4e66780c0 182 bool Int(int i) { Prefix(kNumberType); return EndValue(WriteInt(i)); }
IanBenzMaxim 0:33d4e66780c0 183 bool Uint(unsigned u) { Prefix(kNumberType); return EndValue(WriteUint(u)); }
IanBenzMaxim 0:33d4e66780c0 184 bool Int64(int64_t i64) { Prefix(kNumberType); return EndValue(WriteInt64(i64)); }
IanBenzMaxim 0:33d4e66780c0 185 bool Uint64(uint64_t u64) { Prefix(kNumberType); return EndValue(WriteUint64(u64)); }
IanBenzMaxim 0:33d4e66780c0 186
IanBenzMaxim 0:33d4e66780c0 187 //! Writes the given \c double value to the stream
IanBenzMaxim 0:33d4e66780c0 188 /*!
IanBenzMaxim 0:33d4e66780c0 189 \param d The value to be written.
IanBenzMaxim 0:33d4e66780c0 190 \return Whether it is succeed.
IanBenzMaxim 0:33d4e66780c0 191 */
IanBenzMaxim 0:33d4e66780c0 192 bool Double(double d) { Prefix(kNumberType); return EndValue(WriteDouble(d)); }
IanBenzMaxim 0:33d4e66780c0 193
IanBenzMaxim 0:33d4e66780c0 194 bool RawNumber(const Ch* str, SizeType length, bool copy = false) {
IanBenzMaxim 0:33d4e66780c0 195 RAPIDJSON_ASSERT(str != 0);
IanBenzMaxim 0:33d4e66780c0 196 (void)copy;
IanBenzMaxim 0:33d4e66780c0 197 Prefix(kNumberType);
IanBenzMaxim 0:33d4e66780c0 198 return EndValue(WriteString(str, length));
IanBenzMaxim 0:33d4e66780c0 199 }
IanBenzMaxim 0:33d4e66780c0 200
IanBenzMaxim 0:33d4e66780c0 201 bool String(const Ch* str, SizeType length, bool copy = false) {
IanBenzMaxim 0:33d4e66780c0 202 RAPIDJSON_ASSERT(str != 0);
IanBenzMaxim 0:33d4e66780c0 203 (void)copy;
IanBenzMaxim 0:33d4e66780c0 204 Prefix(kStringType);
IanBenzMaxim 0:33d4e66780c0 205 return EndValue(WriteString(str, length));
IanBenzMaxim 0:33d4e66780c0 206 }
IanBenzMaxim 0:33d4e66780c0 207
IanBenzMaxim 0:33d4e66780c0 208 #if RAPIDJSON_HAS_STDSTRING
IanBenzMaxim 0:33d4e66780c0 209 bool String(const std::basic_string<Ch>& str) {
IanBenzMaxim 0:33d4e66780c0 210 return String(str.data(), SizeType(str.size()));
IanBenzMaxim 0:33d4e66780c0 211 }
IanBenzMaxim 0:33d4e66780c0 212 #endif
IanBenzMaxim 0:33d4e66780c0 213
IanBenzMaxim 0:33d4e66780c0 214 bool StartObject() {
IanBenzMaxim 0:33d4e66780c0 215 Prefix(kObjectType);
IanBenzMaxim 0:33d4e66780c0 216 new (level_stack_.template Push<Level>()) Level(false);
IanBenzMaxim 0:33d4e66780c0 217 return WriteStartObject();
IanBenzMaxim 0:33d4e66780c0 218 }
IanBenzMaxim 0:33d4e66780c0 219
IanBenzMaxim 0:33d4e66780c0 220 bool Key(const Ch* str, SizeType length, bool copy = false) { return String(str, length, copy); }
IanBenzMaxim 0:33d4e66780c0 221
IanBenzMaxim 0:33d4e66780c0 222 bool EndObject(SizeType memberCount = 0) {
IanBenzMaxim 0:33d4e66780c0 223 (void)memberCount;
IanBenzMaxim 0:33d4e66780c0 224 RAPIDJSON_ASSERT(level_stack_.GetSize() >= sizeof(Level));
IanBenzMaxim 0:33d4e66780c0 225 RAPIDJSON_ASSERT(!level_stack_.template Top<Level>()->inArray);
IanBenzMaxim 0:33d4e66780c0 226 level_stack_.template Pop<Level>(1);
IanBenzMaxim 0:33d4e66780c0 227 return EndValue(WriteEndObject());
IanBenzMaxim 0:33d4e66780c0 228 }
IanBenzMaxim 0:33d4e66780c0 229
IanBenzMaxim 0:33d4e66780c0 230 bool StartArray() {
IanBenzMaxim 0:33d4e66780c0 231 Prefix(kArrayType);
IanBenzMaxim 0:33d4e66780c0 232 new (level_stack_.template Push<Level>()) Level(true);
IanBenzMaxim 0:33d4e66780c0 233 return WriteStartArray();
IanBenzMaxim 0:33d4e66780c0 234 }
IanBenzMaxim 0:33d4e66780c0 235
IanBenzMaxim 0:33d4e66780c0 236 bool EndArray(SizeType elementCount = 0) {
IanBenzMaxim 0:33d4e66780c0 237 (void)elementCount;
IanBenzMaxim 0:33d4e66780c0 238 RAPIDJSON_ASSERT(level_stack_.GetSize() >= sizeof(Level));
IanBenzMaxim 0:33d4e66780c0 239 RAPIDJSON_ASSERT(level_stack_.template Top<Level>()->inArray);
IanBenzMaxim 0:33d4e66780c0 240 level_stack_.template Pop<Level>(1);
IanBenzMaxim 0:33d4e66780c0 241 return EndValue(WriteEndArray());
IanBenzMaxim 0:33d4e66780c0 242 }
IanBenzMaxim 0:33d4e66780c0 243 //@}
IanBenzMaxim 0:33d4e66780c0 244
IanBenzMaxim 0:33d4e66780c0 245 /*! @name Convenience extensions */
IanBenzMaxim 0:33d4e66780c0 246 //@{
IanBenzMaxim 0:33d4e66780c0 247
IanBenzMaxim 0:33d4e66780c0 248 //! Simpler but slower overload.
IanBenzMaxim 0:33d4e66780c0 249 bool String(const Ch* str) { return String(str, internal::StrLen(str)); }
IanBenzMaxim 0:33d4e66780c0 250 bool Key(const Ch* str) { return Key(str, internal::StrLen(str)); }
IanBenzMaxim 0:33d4e66780c0 251
IanBenzMaxim 0:33d4e66780c0 252 //@}
IanBenzMaxim 0:33d4e66780c0 253
IanBenzMaxim 0:33d4e66780c0 254 //! Write a raw JSON value.
IanBenzMaxim 0:33d4e66780c0 255 /*!
IanBenzMaxim 0:33d4e66780c0 256 For user to write a stringified JSON as a value.
IanBenzMaxim 0:33d4e66780c0 257
IanBenzMaxim 0:33d4e66780c0 258 \param json A well-formed JSON value. It should not contain null character within [0, length - 1] range.
IanBenzMaxim 0:33d4e66780c0 259 \param length Length of the json.
IanBenzMaxim 0:33d4e66780c0 260 \param type Type of the root of json.
IanBenzMaxim 0:33d4e66780c0 261 */
IanBenzMaxim 0:33d4e66780c0 262 bool RawValue(const Ch* json, size_t length, Type type) {
IanBenzMaxim 0:33d4e66780c0 263 RAPIDJSON_ASSERT(json != 0);
IanBenzMaxim 0:33d4e66780c0 264 Prefix(type);
IanBenzMaxim 0:33d4e66780c0 265 return EndValue(WriteRawValue(json, length));
IanBenzMaxim 0:33d4e66780c0 266 }
IanBenzMaxim 0:33d4e66780c0 267
IanBenzMaxim 0:33d4e66780c0 268 protected:
IanBenzMaxim 0:33d4e66780c0 269 //! Information for each nested level
IanBenzMaxim 0:33d4e66780c0 270 struct Level {
IanBenzMaxim 0:33d4e66780c0 271 Level(bool inArray_) : valueCount(0), inArray(inArray_) {}
IanBenzMaxim 0:33d4e66780c0 272 size_t valueCount; //!< number of values in this level
IanBenzMaxim 0:33d4e66780c0 273 bool inArray; //!< true if in array, otherwise in object
IanBenzMaxim 0:33d4e66780c0 274 };
IanBenzMaxim 0:33d4e66780c0 275
IanBenzMaxim 0:33d4e66780c0 276 static const size_t kDefaultLevelDepth = 32;
IanBenzMaxim 0:33d4e66780c0 277
IanBenzMaxim 0:33d4e66780c0 278 bool WriteNull() {
IanBenzMaxim 0:33d4e66780c0 279 PutReserve(*os_, 4);
IanBenzMaxim 0:33d4e66780c0 280 PutUnsafe(*os_, 'n'); PutUnsafe(*os_, 'u'); PutUnsafe(*os_, 'l'); PutUnsafe(*os_, 'l'); return true;
IanBenzMaxim 0:33d4e66780c0 281 }
IanBenzMaxim 0:33d4e66780c0 282
IanBenzMaxim 0:33d4e66780c0 283 bool WriteBool(bool b) {
IanBenzMaxim 0:33d4e66780c0 284 if (b) {
IanBenzMaxim 0:33d4e66780c0 285 PutReserve(*os_, 4);
IanBenzMaxim 0:33d4e66780c0 286 PutUnsafe(*os_, 't'); PutUnsafe(*os_, 'r'); PutUnsafe(*os_, 'u'); PutUnsafe(*os_, 'e');
IanBenzMaxim 0:33d4e66780c0 287 }
IanBenzMaxim 0:33d4e66780c0 288 else {
IanBenzMaxim 0:33d4e66780c0 289 PutReserve(*os_, 5);
IanBenzMaxim 0:33d4e66780c0 290 PutUnsafe(*os_, 'f'); PutUnsafe(*os_, 'a'); PutUnsafe(*os_, 'l'); PutUnsafe(*os_, 's'); PutUnsafe(*os_, 'e');
IanBenzMaxim 0:33d4e66780c0 291 }
IanBenzMaxim 0:33d4e66780c0 292 return true;
IanBenzMaxim 0:33d4e66780c0 293 }
IanBenzMaxim 0:33d4e66780c0 294
IanBenzMaxim 0:33d4e66780c0 295 bool WriteInt(int i) {
IanBenzMaxim 0:33d4e66780c0 296 char buffer[11];
IanBenzMaxim 0:33d4e66780c0 297 const char* end = internal::i32toa(i, buffer);
IanBenzMaxim 0:33d4e66780c0 298 PutReserve(*os_, static_cast<size_t>(end - buffer));
IanBenzMaxim 0:33d4e66780c0 299 for (const char* p = buffer; p != end; ++p)
IanBenzMaxim 0:33d4e66780c0 300 PutUnsafe(*os_, static_cast<typename TargetEncoding::Ch>(*p));
IanBenzMaxim 0:33d4e66780c0 301 return true;
IanBenzMaxim 0:33d4e66780c0 302 }
IanBenzMaxim 0:33d4e66780c0 303
IanBenzMaxim 0:33d4e66780c0 304 bool WriteUint(unsigned u) {
IanBenzMaxim 0:33d4e66780c0 305 char buffer[10];
IanBenzMaxim 0:33d4e66780c0 306 const char* end = internal::u32toa(u, buffer);
IanBenzMaxim 0:33d4e66780c0 307 PutReserve(*os_, static_cast<size_t>(end - buffer));
IanBenzMaxim 0:33d4e66780c0 308 for (const char* p = buffer; p != end; ++p)
IanBenzMaxim 0:33d4e66780c0 309 PutUnsafe(*os_, static_cast<typename TargetEncoding::Ch>(*p));
IanBenzMaxim 0:33d4e66780c0 310 return true;
IanBenzMaxim 0:33d4e66780c0 311 }
IanBenzMaxim 0:33d4e66780c0 312
IanBenzMaxim 0:33d4e66780c0 313 bool WriteInt64(int64_t i64) {
IanBenzMaxim 0:33d4e66780c0 314 char buffer[21];
IanBenzMaxim 0:33d4e66780c0 315 const char* end = internal::i64toa(i64, buffer);
IanBenzMaxim 0:33d4e66780c0 316 PutReserve(*os_, static_cast<size_t>(end - buffer));
IanBenzMaxim 0:33d4e66780c0 317 for (const char* p = buffer; p != end; ++p)
IanBenzMaxim 0:33d4e66780c0 318 PutUnsafe(*os_, static_cast<typename TargetEncoding::Ch>(*p));
IanBenzMaxim 0:33d4e66780c0 319 return true;
IanBenzMaxim 0:33d4e66780c0 320 }
IanBenzMaxim 0:33d4e66780c0 321
IanBenzMaxim 0:33d4e66780c0 322 bool WriteUint64(uint64_t u64) {
IanBenzMaxim 0:33d4e66780c0 323 char buffer[20];
IanBenzMaxim 0:33d4e66780c0 324 char* end = internal::u64toa(u64, buffer);
IanBenzMaxim 0:33d4e66780c0 325 PutReserve(*os_, static_cast<size_t>(end - buffer));
IanBenzMaxim 0:33d4e66780c0 326 for (char* p = buffer; p != end; ++p)
IanBenzMaxim 0:33d4e66780c0 327 PutUnsafe(*os_, static_cast<typename TargetEncoding::Ch>(*p));
IanBenzMaxim 0:33d4e66780c0 328 return true;
IanBenzMaxim 0:33d4e66780c0 329 }
IanBenzMaxim 0:33d4e66780c0 330
IanBenzMaxim 0:33d4e66780c0 331 bool WriteDouble(double d) {
IanBenzMaxim 0:33d4e66780c0 332 if (internal::Double(d).IsNanOrInf()) {
IanBenzMaxim 0:33d4e66780c0 333 if (!(writeFlags & kWriteNanAndInfFlag))
IanBenzMaxim 0:33d4e66780c0 334 return false;
IanBenzMaxim 0:33d4e66780c0 335 if (internal::Double(d).IsNan()) {
IanBenzMaxim 0:33d4e66780c0 336 PutReserve(*os_, 3);
IanBenzMaxim 0:33d4e66780c0 337 PutUnsafe(*os_, 'N'); PutUnsafe(*os_, 'a'); PutUnsafe(*os_, 'N');
IanBenzMaxim 0:33d4e66780c0 338 return true;
IanBenzMaxim 0:33d4e66780c0 339 }
IanBenzMaxim 0:33d4e66780c0 340 if (internal::Double(d).Sign()) {
IanBenzMaxim 0:33d4e66780c0 341 PutReserve(*os_, 9);
IanBenzMaxim 0:33d4e66780c0 342 PutUnsafe(*os_, '-');
IanBenzMaxim 0:33d4e66780c0 343 }
IanBenzMaxim 0:33d4e66780c0 344 else
IanBenzMaxim 0:33d4e66780c0 345 PutReserve(*os_, 8);
IanBenzMaxim 0:33d4e66780c0 346 PutUnsafe(*os_, 'I'); PutUnsafe(*os_, 'n'); PutUnsafe(*os_, 'f');
IanBenzMaxim 0:33d4e66780c0 347 PutUnsafe(*os_, 'i'); PutUnsafe(*os_, 'n'); PutUnsafe(*os_, 'i'); PutUnsafe(*os_, 't'); PutUnsafe(*os_, 'y');
IanBenzMaxim 0:33d4e66780c0 348 return true;
IanBenzMaxim 0:33d4e66780c0 349 }
IanBenzMaxim 0:33d4e66780c0 350
IanBenzMaxim 0:33d4e66780c0 351 char buffer[25];
IanBenzMaxim 0:33d4e66780c0 352 char* end = internal::dtoa(d, buffer, maxDecimalPlaces_);
IanBenzMaxim 0:33d4e66780c0 353 PutReserve(*os_, static_cast<size_t>(end - buffer));
IanBenzMaxim 0:33d4e66780c0 354 for (char* p = buffer; p != end; ++p)
IanBenzMaxim 0:33d4e66780c0 355 PutUnsafe(*os_, static_cast<typename TargetEncoding::Ch>(*p));
IanBenzMaxim 0:33d4e66780c0 356 return true;
IanBenzMaxim 0:33d4e66780c0 357 }
IanBenzMaxim 0:33d4e66780c0 358
IanBenzMaxim 0:33d4e66780c0 359 bool WriteString(const Ch* str, SizeType length) {
IanBenzMaxim 0:33d4e66780c0 360 static const typename TargetEncoding::Ch hexDigits[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
IanBenzMaxim 0:33d4e66780c0 361 static const char escape[256] = {
IanBenzMaxim 0:33d4e66780c0 362 #define Z16 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
IanBenzMaxim 0:33d4e66780c0 363 //0 1 2 3 4 5 6 7 8 9 A B C D E F
IanBenzMaxim 0:33d4e66780c0 364 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'b', 't', 'n', 'u', 'f', 'r', 'u', 'u', // 00
IanBenzMaxim 0:33d4e66780c0 365 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', 'u', // 10
IanBenzMaxim 0:33d4e66780c0 366 0, 0, '"', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 20
IanBenzMaxim 0:33d4e66780c0 367 Z16, Z16, // 30~4F
IanBenzMaxim 0:33d4e66780c0 368 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,'\\', 0, 0, 0, // 50
IanBenzMaxim 0:33d4e66780c0 369 Z16, Z16, Z16, Z16, Z16, Z16, Z16, Z16, Z16, Z16 // 60~FF
IanBenzMaxim 0:33d4e66780c0 370 #undef Z16
IanBenzMaxim 0:33d4e66780c0 371 };
IanBenzMaxim 0:33d4e66780c0 372
IanBenzMaxim 0:33d4e66780c0 373 if (TargetEncoding::supportUnicode)
IanBenzMaxim 0:33d4e66780c0 374 PutReserve(*os_, 2 + length * 6); // "\uxxxx..."
IanBenzMaxim 0:33d4e66780c0 375 else
IanBenzMaxim 0:33d4e66780c0 376 PutReserve(*os_, 2 + length * 12); // "\uxxxx\uyyyy..."
IanBenzMaxim 0:33d4e66780c0 377
IanBenzMaxim 0:33d4e66780c0 378 PutUnsafe(*os_, '\"');
IanBenzMaxim 0:33d4e66780c0 379 GenericStringStream<SourceEncoding> is(str);
IanBenzMaxim 0:33d4e66780c0 380 while (ScanWriteUnescapedString(is, length)) {
IanBenzMaxim 0:33d4e66780c0 381 const Ch c = is.Peek();
IanBenzMaxim 0:33d4e66780c0 382 if (!TargetEncoding::supportUnicode && static_cast<unsigned>(c) >= 0x80) {
IanBenzMaxim 0:33d4e66780c0 383 // Unicode escaping
IanBenzMaxim 0:33d4e66780c0 384 unsigned codepoint;
IanBenzMaxim 0:33d4e66780c0 385 if (RAPIDJSON_UNLIKELY(!SourceEncoding::Decode(is, &codepoint)))
IanBenzMaxim 0:33d4e66780c0 386 return false;
IanBenzMaxim 0:33d4e66780c0 387 PutUnsafe(*os_, '\\');
IanBenzMaxim 0:33d4e66780c0 388 PutUnsafe(*os_, 'u');
IanBenzMaxim 0:33d4e66780c0 389 if (codepoint <= 0xD7FF || (codepoint >= 0xE000 && codepoint <= 0xFFFF)) {
IanBenzMaxim 0:33d4e66780c0 390 PutUnsafe(*os_, hexDigits[(codepoint >> 12) & 15]);
IanBenzMaxim 0:33d4e66780c0 391 PutUnsafe(*os_, hexDigits[(codepoint >> 8) & 15]);
IanBenzMaxim 0:33d4e66780c0 392 PutUnsafe(*os_, hexDigits[(codepoint >> 4) & 15]);
IanBenzMaxim 0:33d4e66780c0 393 PutUnsafe(*os_, hexDigits[(codepoint ) & 15]);
IanBenzMaxim 0:33d4e66780c0 394 }
IanBenzMaxim 0:33d4e66780c0 395 else {
IanBenzMaxim 0:33d4e66780c0 396 RAPIDJSON_ASSERT(codepoint >= 0x010000 && codepoint <= 0x10FFFF);
IanBenzMaxim 0:33d4e66780c0 397 // Surrogate pair
IanBenzMaxim 0:33d4e66780c0 398 unsigned s = codepoint - 0x010000;
IanBenzMaxim 0:33d4e66780c0 399 unsigned lead = (s >> 10) + 0xD800;
IanBenzMaxim 0:33d4e66780c0 400 unsigned trail = (s & 0x3FF) + 0xDC00;
IanBenzMaxim 0:33d4e66780c0 401 PutUnsafe(*os_, hexDigits[(lead >> 12) & 15]);
IanBenzMaxim 0:33d4e66780c0 402 PutUnsafe(*os_, hexDigits[(lead >> 8) & 15]);
IanBenzMaxim 0:33d4e66780c0 403 PutUnsafe(*os_, hexDigits[(lead >> 4) & 15]);
IanBenzMaxim 0:33d4e66780c0 404 PutUnsafe(*os_, hexDigits[(lead ) & 15]);
IanBenzMaxim 0:33d4e66780c0 405 PutUnsafe(*os_, '\\');
IanBenzMaxim 0:33d4e66780c0 406 PutUnsafe(*os_, 'u');
IanBenzMaxim 0:33d4e66780c0 407 PutUnsafe(*os_, hexDigits[(trail >> 12) & 15]);
IanBenzMaxim 0:33d4e66780c0 408 PutUnsafe(*os_, hexDigits[(trail >> 8) & 15]);
IanBenzMaxim 0:33d4e66780c0 409 PutUnsafe(*os_, hexDigits[(trail >> 4) & 15]);
IanBenzMaxim 0:33d4e66780c0 410 PutUnsafe(*os_, hexDigits[(trail ) & 15]);
IanBenzMaxim 0:33d4e66780c0 411 }
IanBenzMaxim 0:33d4e66780c0 412 }
IanBenzMaxim 0:33d4e66780c0 413 else if ((sizeof(Ch) == 1 || static_cast<unsigned>(c) < 256) && RAPIDJSON_UNLIKELY(escape[static_cast<unsigned char>(c)])) {
IanBenzMaxim 0:33d4e66780c0 414 is.Take();
IanBenzMaxim 0:33d4e66780c0 415 PutUnsafe(*os_, '\\');
IanBenzMaxim 0:33d4e66780c0 416 PutUnsafe(*os_, static_cast<typename TargetEncoding::Ch>(escape[static_cast<unsigned char>(c)]));
IanBenzMaxim 0:33d4e66780c0 417 if (escape[static_cast<unsigned char>(c)] == 'u') {
IanBenzMaxim 0:33d4e66780c0 418 PutUnsafe(*os_, '0');
IanBenzMaxim 0:33d4e66780c0 419 PutUnsafe(*os_, '0');
IanBenzMaxim 0:33d4e66780c0 420 PutUnsafe(*os_, hexDigits[static_cast<unsigned char>(c) >> 4]);
IanBenzMaxim 0:33d4e66780c0 421 PutUnsafe(*os_, hexDigits[static_cast<unsigned char>(c) & 0xF]);
IanBenzMaxim 0:33d4e66780c0 422 }
IanBenzMaxim 0:33d4e66780c0 423 }
IanBenzMaxim 0:33d4e66780c0 424 else if (RAPIDJSON_UNLIKELY(!(writeFlags & kWriteValidateEncodingFlag ?
IanBenzMaxim 0:33d4e66780c0 425 Transcoder<SourceEncoding, TargetEncoding>::Validate(is, *os_) :
IanBenzMaxim 0:33d4e66780c0 426 Transcoder<SourceEncoding, TargetEncoding>::TranscodeUnsafe(is, *os_))))
IanBenzMaxim 0:33d4e66780c0 427 return false;
IanBenzMaxim 0:33d4e66780c0 428 }
IanBenzMaxim 0:33d4e66780c0 429 PutUnsafe(*os_, '\"');
IanBenzMaxim 0:33d4e66780c0 430 return true;
IanBenzMaxim 0:33d4e66780c0 431 }
IanBenzMaxim 0:33d4e66780c0 432
IanBenzMaxim 0:33d4e66780c0 433 bool ScanWriteUnescapedString(GenericStringStream<SourceEncoding>& is, size_t length) {
IanBenzMaxim 0:33d4e66780c0 434 return RAPIDJSON_LIKELY(is.Tell() < length);
IanBenzMaxim 0:33d4e66780c0 435 }
IanBenzMaxim 0:33d4e66780c0 436
IanBenzMaxim 0:33d4e66780c0 437 bool WriteStartObject() { os_->Put('{'); return true; }
IanBenzMaxim 0:33d4e66780c0 438 bool WriteEndObject() { os_->Put('}'); return true; }
IanBenzMaxim 0:33d4e66780c0 439 bool WriteStartArray() { os_->Put('['); return true; }
IanBenzMaxim 0:33d4e66780c0 440 bool WriteEndArray() { os_->Put(']'); return true; }
IanBenzMaxim 0:33d4e66780c0 441
IanBenzMaxim 0:33d4e66780c0 442 bool WriteRawValue(const Ch* json, size_t length) {
IanBenzMaxim 0:33d4e66780c0 443 PutReserve(*os_, length);
IanBenzMaxim 0:33d4e66780c0 444 for (size_t i = 0; i < length; i++) {
IanBenzMaxim 0:33d4e66780c0 445 RAPIDJSON_ASSERT(json[i] != '\0');
IanBenzMaxim 0:33d4e66780c0 446 PutUnsafe(*os_, json[i]);
IanBenzMaxim 0:33d4e66780c0 447 }
IanBenzMaxim 0:33d4e66780c0 448 return true;
IanBenzMaxim 0:33d4e66780c0 449 }
IanBenzMaxim 0:33d4e66780c0 450
IanBenzMaxim 0:33d4e66780c0 451 void Prefix(Type type) {
IanBenzMaxim 0:33d4e66780c0 452 (void)type;
IanBenzMaxim 0:33d4e66780c0 453 if (RAPIDJSON_LIKELY(level_stack_.GetSize() != 0)) { // this value is not at root
IanBenzMaxim 0:33d4e66780c0 454 Level* level = level_stack_.template Top<Level>();
IanBenzMaxim 0:33d4e66780c0 455 if (level->valueCount > 0) {
IanBenzMaxim 0:33d4e66780c0 456 if (level->inArray)
IanBenzMaxim 0:33d4e66780c0 457 os_->Put(','); // add comma if it is not the first element in array
IanBenzMaxim 0:33d4e66780c0 458 else // in object
IanBenzMaxim 0:33d4e66780c0 459 os_->Put((level->valueCount % 2 == 0) ? ',' : ':');
IanBenzMaxim 0:33d4e66780c0 460 }
IanBenzMaxim 0:33d4e66780c0 461 if (!level->inArray && level->valueCount % 2 == 0)
IanBenzMaxim 0:33d4e66780c0 462 RAPIDJSON_ASSERT(type == kStringType); // if it's in object, then even number should be a name
IanBenzMaxim 0:33d4e66780c0 463 level->valueCount++;
IanBenzMaxim 0:33d4e66780c0 464 }
IanBenzMaxim 0:33d4e66780c0 465 else {
IanBenzMaxim 0:33d4e66780c0 466 RAPIDJSON_ASSERT(!hasRoot_); // Should only has one and only one root.
IanBenzMaxim 0:33d4e66780c0 467 hasRoot_ = true;
IanBenzMaxim 0:33d4e66780c0 468 }
IanBenzMaxim 0:33d4e66780c0 469 }
IanBenzMaxim 0:33d4e66780c0 470
IanBenzMaxim 0:33d4e66780c0 471 // Flush the value if it is the top level one.
IanBenzMaxim 0:33d4e66780c0 472 bool EndValue(bool ret) {
IanBenzMaxim 0:33d4e66780c0 473 if (RAPIDJSON_UNLIKELY(level_stack_.Empty())) // end of json text
IanBenzMaxim 0:33d4e66780c0 474 os_->Flush();
IanBenzMaxim 0:33d4e66780c0 475 return ret;
IanBenzMaxim 0:33d4e66780c0 476 }
IanBenzMaxim 0:33d4e66780c0 477
IanBenzMaxim 0:33d4e66780c0 478 OutputStream* os_;
IanBenzMaxim 0:33d4e66780c0 479 internal::Stack<StackAllocator> level_stack_;
IanBenzMaxim 0:33d4e66780c0 480 int maxDecimalPlaces_;
IanBenzMaxim 0:33d4e66780c0 481 bool hasRoot_;
IanBenzMaxim 0:33d4e66780c0 482
IanBenzMaxim 0:33d4e66780c0 483 private:
IanBenzMaxim 0:33d4e66780c0 484 // Prohibit copy constructor & assignment operator.
IanBenzMaxim 0:33d4e66780c0 485 Writer(const Writer&);
IanBenzMaxim 0:33d4e66780c0 486 Writer& operator=(const Writer&);
IanBenzMaxim 0:33d4e66780c0 487 };
IanBenzMaxim 0:33d4e66780c0 488
IanBenzMaxim 0:33d4e66780c0 489 // Full specialization for StringStream to prevent memory copying
IanBenzMaxim 0:33d4e66780c0 490
IanBenzMaxim 0:33d4e66780c0 491 template<>
IanBenzMaxim 0:33d4e66780c0 492 inline bool Writer<StringBuffer>::WriteInt(int i) {
IanBenzMaxim 0:33d4e66780c0 493 char *buffer = os_->Push(11);
IanBenzMaxim 0:33d4e66780c0 494 const char* end = internal::i32toa(i, buffer);
IanBenzMaxim 0:33d4e66780c0 495 os_->Pop(static_cast<size_t>(11 - (end - buffer)));
IanBenzMaxim 0:33d4e66780c0 496 return true;
IanBenzMaxim 0:33d4e66780c0 497 }
IanBenzMaxim 0:33d4e66780c0 498
IanBenzMaxim 0:33d4e66780c0 499 template<>
IanBenzMaxim 0:33d4e66780c0 500 inline bool Writer<StringBuffer>::WriteUint(unsigned u) {
IanBenzMaxim 0:33d4e66780c0 501 char *buffer = os_->Push(10);
IanBenzMaxim 0:33d4e66780c0 502 const char* end = internal::u32toa(u, buffer);
IanBenzMaxim 0:33d4e66780c0 503 os_->Pop(static_cast<size_t>(10 - (end - buffer)));
IanBenzMaxim 0:33d4e66780c0 504 return true;
IanBenzMaxim 0:33d4e66780c0 505 }
IanBenzMaxim 0:33d4e66780c0 506
IanBenzMaxim 0:33d4e66780c0 507 template<>
IanBenzMaxim 0:33d4e66780c0 508 inline bool Writer<StringBuffer>::WriteInt64(int64_t i64) {
IanBenzMaxim 0:33d4e66780c0 509 char *buffer = os_->Push(21);
IanBenzMaxim 0:33d4e66780c0 510 const char* end = internal::i64toa(i64, buffer);
IanBenzMaxim 0:33d4e66780c0 511 os_->Pop(static_cast<size_t>(21 - (end - buffer)));
IanBenzMaxim 0:33d4e66780c0 512 return true;
IanBenzMaxim 0:33d4e66780c0 513 }
IanBenzMaxim 0:33d4e66780c0 514
IanBenzMaxim 0:33d4e66780c0 515 template<>
IanBenzMaxim 0:33d4e66780c0 516 inline bool Writer<StringBuffer>::WriteUint64(uint64_t u) {
IanBenzMaxim 0:33d4e66780c0 517 char *buffer = os_->Push(20);
IanBenzMaxim 0:33d4e66780c0 518 const char* end = internal::u64toa(u, buffer);
IanBenzMaxim 0:33d4e66780c0 519 os_->Pop(static_cast<size_t>(20 - (end - buffer)));
IanBenzMaxim 0:33d4e66780c0 520 return true;
IanBenzMaxim 0:33d4e66780c0 521 }
IanBenzMaxim 0:33d4e66780c0 522
IanBenzMaxim 0:33d4e66780c0 523 template<>
IanBenzMaxim 0:33d4e66780c0 524 inline bool Writer<StringBuffer>::WriteDouble(double d) {
IanBenzMaxim 0:33d4e66780c0 525 if (internal::Double(d).IsNanOrInf()) {
IanBenzMaxim 0:33d4e66780c0 526 // Note: This code path can only be reached if (RAPIDJSON_WRITE_DEFAULT_FLAGS & kWriteNanAndInfFlag).
IanBenzMaxim 0:33d4e66780c0 527 if (!(kWriteDefaultFlags & kWriteNanAndInfFlag))
IanBenzMaxim 0:33d4e66780c0 528 return false;
IanBenzMaxim 0:33d4e66780c0 529 if (internal::Double(d).IsNan()) {
IanBenzMaxim 0:33d4e66780c0 530 PutReserve(*os_, 3);
IanBenzMaxim 0:33d4e66780c0 531 PutUnsafe(*os_, 'N'); PutUnsafe(*os_, 'a'); PutUnsafe(*os_, 'N');
IanBenzMaxim 0:33d4e66780c0 532 return true;
IanBenzMaxim 0:33d4e66780c0 533 }
IanBenzMaxim 0:33d4e66780c0 534 if (internal::Double(d).Sign()) {
IanBenzMaxim 0:33d4e66780c0 535 PutReserve(*os_, 9);
IanBenzMaxim 0:33d4e66780c0 536 PutUnsafe(*os_, '-');
IanBenzMaxim 0:33d4e66780c0 537 }
IanBenzMaxim 0:33d4e66780c0 538 else
IanBenzMaxim 0:33d4e66780c0 539 PutReserve(*os_, 8);
IanBenzMaxim 0:33d4e66780c0 540 PutUnsafe(*os_, 'I'); PutUnsafe(*os_, 'n'); PutUnsafe(*os_, 'f');
IanBenzMaxim 0:33d4e66780c0 541 PutUnsafe(*os_, 'i'); PutUnsafe(*os_, 'n'); PutUnsafe(*os_, 'i'); PutUnsafe(*os_, 't'); PutUnsafe(*os_, 'y');
IanBenzMaxim 0:33d4e66780c0 542 return true;
IanBenzMaxim 0:33d4e66780c0 543 }
IanBenzMaxim 0:33d4e66780c0 544
IanBenzMaxim 0:33d4e66780c0 545 char *buffer = os_->Push(25);
IanBenzMaxim 0:33d4e66780c0 546 char* end = internal::dtoa(d, buffer, maxDecimalPlaces_);
IanBenzMaxim 0:33d4e66780c0 547 os_->Pop(static_cast<size_t>(25 - (end - buffer)));
IanBenzMaxim 0:33d4e66780c0 548 return true;
IanBenzMaxim 0:33d4e66780c0 549 }
IanBenzMaxim 0:33d4e66780c0 550
IanBenzMaxim 0:33d4e66780c0 551 #if defined(RAPIDJSON_SSE2) || defined(RAPIDJSON_SSE42)
IanBenzMaxim 0:33d4e66780c0 552 template<>
IanBenzMaxim 0:33d4e66780c0 553 inline bool Writer<StringBuffer>::ScanWriteUnescapedString(StringStream& is, size_t length) {
IanBenzMaxim 0:33d4e66780c0 554 if (length < 16)
IanBenzMaxim 0:33d4e66780c0 555 return RAPIDJSON_LIKELY(is.Tell() < length);
IanBenzMaxim 0:33d4e66780c0 556
IanBenzMaxim 0:33d4e66780c0 557 if (!RAPIDJSON_LIKELY(is.Tell() < length))
IanBenzMaxim 0:33d4e66780c0 558 return false;
IanBenzMaxim 0:33d4e66780c0 559
IanBenzMaxim 0:33d4e66780c0 560 const char* p = is.src_;
IanBenzMaxim 0:33d4e66780c0 561 const char* end = is.head_ + length;
IanBenzMaxim 0:33d4e66780c0 562 const char* nextAligned = reinterpret_cast<const char*>((reinterpret_cast<size_t>(p) + 15) & static_cast<size_t>(~15));
IanBenzMaxim 0:33d4e66780c0 563 const char* endAligned = reinterpret_cast<const char*>(reinterpret_cast<size_t>(end) & static_cast<size_t>(~15));
IanBenzMaxim 0:33d4e66780c0 564 if (nextAligned > end)
IanBenzMaxim 0:33d4e66780c0 565 return true;
IanBenzMaxim 0:33d4e66780c0 566
IanBenzMaxim 0:33d4e66780c0 567 while (p != nextAligned)
IanBenzMaxim 0:33d4e66780c0 568 if (*p < 0x20 || *p == '\"' || *p == '\\') {
IanBenzMaxim 0:33d4e66780c0 569 is.src_ = p;
IanBenzMaxim 0:33d4e66780c0 570 return RAPIDJSON_LIKELY(is.Tell() < length);
IanBenzMaxim 0:33d4e66780c0 571 }
IanBenzMaxim 0:33d4e66780c0 572 else
IanBenzMaxim 0:33d4e66780c0 573 os_->PutUnsafe(*p++);
IanBenzMaxim 0:33d4e66780c0 574
IanBenzMaxim 0:33d4e66780c0 575 // The rest of string using SIMD
IanBenzMaxim 0:33d4e66780c0 576 static const char dquote[16] = { '\"', '\"', '\"', '\"', '\"', '\"', '\"', '\"', '\"', '\"', '\"', '\"', '\"', '\"', '\"', '\"' };
IanBenzMaxim 0:33d4e66780c0 577 static const char bslash[16] = { '\\', '\\', '\\', '\\', '\\', '\\', '\\', '\\', '\\', '\\', '\\', '\\', '\\', '\\', '\\', '\\' };
IanBenzMaxim 0:33d4e66780c0 578 static const char space[16] = { 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19, 0x19 };
IanBenzMaxim 0:33d4e66780c0 579 const __m128i dq = _mm_loadu_si128(reinterpret_cast<const __m128i *>(&dquote[0]));
IanBenzMaxim 0:33d4e66780c0 580 const __m128i bs = _mm_loadu_si128(reinterpret_cast<const __m128i *>(&bslash[0]));
IanBenzMaxim 0:33d4e66780c0 581 const __m128i sp = _mm_loadu_si128(reinterpret_cast<const __m128i *>(&space[0]));
IanBenzMaxim 0:33d4e66780c0 582
IanBenzMaxim 0:33d4e66780c0 583 for (; p != endAligned; p += 16) {
IanBenzMaxim 0:33d4e66780c0 584 const __m128i s = _mm_load_si128(reinterpret_cast<const __m128i *>(p));
IanBenzMaxim 0:33d4e66780c0 585 const __m128i t1 = _mm_cmpeq_epi8(s, dq);
IanBenzMaxim 0:33d4e66780c0 586 const __m128i t2 = _mm_cmpeq_epi8(s, bs);
IanBenzMaxim 0:33d4e66780c0 587 const __m128i t3 = _mm_cmpeq_epi8(_mm_max_epu8(s, sp), sp); // s < 0x20 <=> max(s, 0x19) == 0x19
IanBenzMaxim 0:33d4e66780c0 588 const __m128i x = _mm_or_si128(_mm_or_si128(t1, t2), t3);
IanBenzMaxim 0:33d4e66780c0 589 unsigned short r = static_cast<unsigned short>(_mm_movemask_epi8(x));
IanBenzMaxim 0:33d4e66780c0 590 if (RAPIDJSON_UNLIKELY(r != 0)) { // some of characters is escaped
IanBenzMaxim 0:33d4e66780c0 591 SizeType len;
IanBenzMaxim 0:33d4e66780c0 592 #ifdef _MSC_VER // Find the index of first escaped
IanBenzMaxim 0:33d4e66780c0 593 unsigned long offset;
IanBenzMaxim 0:33d4e66780c0 594 _BitScanForward(&offset, r);
IanBenzMaxim 0:33d4e66780c0 595 len = offset;
IanBenzMaxim 0:33d4e66780c0 596 #else
IanBenzMaxim 0:33d4e66780c0 597 len = static_cast<SizeType>(__builtin_ffs(r) - 1);
IanBenzMaxim 0:33d4e66780c0 598 #endif
IanBenzMaxim 0:33d4e66780c0 599 char* q = reinterpret_cast<char*>(os_->PushUnsafe(len));
IanBenzMaxim 0:33d4e66780c0 600 for (size_t i = 0; i < len; i++)
IanBenzMaxim 0:33d4e66780c0 601 q[i] = p[i];
IanBenzMaxim 0:33d4e66780c0 602
IanBenzMaxim 0:33d4e66780c0 603 p += len;
IanBenzMaxim 0:33d4e66780c0 604 break;
IanBenzMaxim 0:33d4e66780c0 605 }
IanBenzMaxim 0:33d4e66780c0 606 _mm_storeu_si128(reinterpret_cast<__m128i *>(os_->PushUnsafe(16)), s);
IanBenzMaxim 0:33d4e66780c0 607 }
IanBenzMaxim 0:33d4e66780c0 608
IanBenzMaxim 0:33d4e66780c0 609 is.src_ = p;
IanBenzMaxim 0:33d4e66780c0 610 return RAPIDJSON_LIKELY(is.Tell() < length);
IanBenzMaxim 0:33d4e66780c0 611 }
IanBenzMaxim 0:33d4e66780c0 612 #endif // defined(RAPIDJSON_SSE2) || defined(RAPIDJSON_SSE42)
IanBenzMaxim 0:33d4e66780c0 613
IanBenzMaxim 0:33d4e66780c0 614 RAPIDJSON_NAMESPACE_END
IanBenzMaxim 0:33d4e66780c0 615
IanBenzMaxim 0:33d4e66780c0 616 #ifdef _MSC_VER
IanBenzMaxim 0:33d4e66780c0 617 RAPIDJSON_DIAG_POP
IanBenzMaxim 0:33d4e66780c0 618 #endif
IanBenzMaxim 0:33d4e66780c0 619
IanBenzMaxim 0:33d4e66780c0 620 #ifdef __clang__
IanBenzMaxim 0:33d4e66780c0 621 RAPIDJSON_DIAG_POP
IanBenzMaxim 0:33d4e66780c0 622 #endif
IanBenzMaxim 0:33d4e66780c0 623
IanBenzMaxim 0:33d4e66780c0 624 #endif // RAPIDJSON_RAPIDJSON_H_