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merging refactor (replacing)
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255
slsSupportLib/include/rapidjson/prettywriter.h
Executable file
255
slsSupportLib/include/rapidjson/prettywriter.h
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// Tencent is pleased to support the open source community by making RapidJSON available.
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//
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// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
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//
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// Licensed under the MIT License (the "License"); you may not use this file except
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// in compliance with the License. You may obtain a copy of the License at
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//
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// http://opensource.org/licenses/MIT
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//
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// Unless required by applicable law or agreed to in writing, software distributed
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// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations under the License.
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#ifndef RAPIDJSON_PRETTYWRITER_H_
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#define RAPIDJSON_PRETTYWRITER_H_
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#include "writer.h"
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#ifdef __GNUC__
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RAPIDJSON_DIAG_PUSH
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RAPIDJSON_DIAG_OFF(effc++)
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#endif
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RAPIDJSON_NAMESPACE_BEGIN
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//! Combination of PrettyWriter format flags.
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/*! \see PrettyWriter::SetFormatOptions
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*/
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enum PrettyFormatOptions {
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kFormatDefault = 0, //!< Default pretty formatting.
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kFormatSingleLineArray = 1 //!< Format arrays on a single line.
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};
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//! Writer with indentation and spacing.
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/*!
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\tparam OutputStream Type of ouptut os.
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\tparam SourceEncoding Encoding of source string.
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\tparam TargetEncoding Encoding of output stream.
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\tparam StackAllocator Type of allocator for allocating memory of stack.
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*/
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template<typename OutputStream, typename SourceEncoding = UTF8<>, typename TargetEncoding = UTF8<>, typename StackAllocator = CrtAllocator, unsigned writeFlags = kWriteDefaultFlags>
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class PrettyWriter : public Writer<OutputStream, SourceEncoding, TargetEncoding, StackAllocator, writeFlags> {
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public:
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typedef Writer<OutputStream, SourceEncoding, TargetEncoding, StackAllocator> Base;
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typedef typename Base::Ch Ch;
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//! Constructor
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/*! \param os Output stream.
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\param allocator User supplied allocator. If it is null, it will create a private one.
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\param levelDepth Initial capacity of stack.
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*/
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explicit PrettyWriter(OutputStream& os, StackAllocator* allocator = 0, size_t levelDepth = Base::kDefaultLevelDepth) :
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Base(os, allocator, levelDepth), indentChar_(' '), indentCharCount_(4), formatOptions_(kFormatDefault) {}
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explicit PrettyWriter(StackAllocator* allocator = 0, size_t levelDepth = Base::kDefaultLevelDepth) :
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Base(allocator, levelDepth), indentChar_(' '), indentCharCount_(4) {}
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//! Set custom indentation.
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/*! \param indentChar Character for indentation. Must be whitespace character (' ', '\\t', '\\n', '\\r').
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\param indentCharCount Number of indent characters for each indentation level.
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\note The default indentation is 4 spaces.
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*/
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PrettyWriter& SetIndent(Ch indentChar, unsigned indentCharCount) {
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RAPIDJSON_ASSERT(indentChar == ' ' || indentChar == '\t' || indentChar == '\n' || indentChar == '\r');
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indentChar_ = indentChar;
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indentCharCount_ = indentCharCount;
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return *this;
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}
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//! Set pretty writer formatting options.
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/*! \param options Formatting options.
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*/
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PrettyWriter& SetFormatOptions(PrettyFormatOptions options) {
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formatOptions_ = options;
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return *this;
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}
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/*! @name Implementation of Handler
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\see Handler
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*/
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//@{
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bool Null() { PrettyPrefix(kNullType); return Base::WriteNull(); }
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bool Bool(bool b) { PrettyPrefix(b ? kTrueType : kFalseType); return Base::WriteBool(b); }
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bool Int(int i) { PrettyPrefix(kNumberType); return Base::WriteInt(i); }
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bool Uint(unsigned u) { PrettyPrefix(kNumberType); return Base::WriteUint(u); }
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bool Int64(int64_t i64) { PrettyPrefix(kNumberType); return Base::WriteInt64(i64); }
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bool Uint64(uint64_t u64) { PrettyPrefix(kNumberType); return Base::WriteUint64(u64); }
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bool Double(double d) { PrettyPrefix(kNumberType); return Base::WriteDouble(d); }
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bool RawNumber(const Ch* str, SizeType length, bool copy = false) {
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(void)copy;
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PrettyPrefix(kNumberType);
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return Base::WriteString(str, length);
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}
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bool String(const Ch* str, SizeType length, bool copy = false) {
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(void)copy;
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PrettyPrefix(kStringType);
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return Base::WriteString(str, length);
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}
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#if RAPIDJSON_HAS_STDSTRING
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bool String(const std::basic_string<Ch>& str) {
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return String(str.data(), SizeType(str.size()));
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}
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#endif
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bool StartObject() {
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PrettyPrefix(kObjectType);
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new (Base::level_stack_.template Push<typename Base::Level>()) typename Base::Level(false);
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return Base::WriteStartObject();
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}
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bool Key(const Ch* str, SizeType length, bool copy = false) { return String(str, length, copy); }
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#if RAPIDJSON_HAS_STDSTRING
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bool Key(const std::basic_string<Ch>& str) {
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return Key(str.data(), SizeType(str.size()));
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}
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#endif
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bool EndObject(SizeType memberCount = 0) {
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(void)memberCount;
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RAPIDJSON_ASSERT(Base::level_stack_.GetSize() >= sizeof(typename Base::Level));
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RAPIDJSON_ASSERT(!Base::level_stack_.template Top<typename Base::Level>()->inArray);
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bool empty = Base::level_stack_.template Pop<typename Base::Level>(1)->valueCount == 0;
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if (!empty) {
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Base::os_->Put('\n');
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WriteIndent();
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}
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bool ret = Base::WriteEndObject();
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(void)ret;
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RAPIDJSON_ASSERT(ret == true);
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if (Base::level_stack_.Empty()) // end of json text
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Base::os_->Flush();
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return true;
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}
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bool StartArray() {
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PrettyPrefix(kArrayType);
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new (Base::level_stack_.template Push<typename Base::Level>()) typename Base::Level(true);
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return Base::WriteStartArray();
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}
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bool EndArray(SizeType memberCount = 0) {
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(void)memberCount;
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RAPIDJSON_ASSERT(Base::level_stack_.GetSize() >= sizeof(typename Base::Level));
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RAPIDJSON_ASSERT(Base::level_stack_.template Top<typename Base::Level>()->inArray);
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bool empty = Base::level_stack_.template Pop<typename Base::Level>(1)->valueCount == 0;
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if (!empty && !(formatOptions_ & kFormatSingleLineArray)) {
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Base::os_->Put('\n');
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WriteIndent();
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}
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bool ret = Base::WriteEndArray();
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(void)ret;
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RAPIDJSON_ASSERT(ret == true);
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if (Base::level_stack_.Empty()) // end of json text
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Base::os_->Flush();
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return true;
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}
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//@}
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/*! @name Convenience extensions */
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//@{
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//! Simpler but slower overload.
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bool String(const Ch* str) { return String(str, internal::StrLen(str)); }
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bool Key(const Ch* str) { return Key(str, internal::StrLen(str)); }
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//@}
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//! Write a raw JSON value.
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/*!
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For user to write a stringified JSON as a value.
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\param json A well-formed JSON value. It should not contain null character within [0, length - 1] range.
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\param length Length of the json.
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\param type Type of the root of json.
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\note When using PrettyWriter::RawValue(), the result json may not be indented correctly.
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*/
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bool RawValue(const Ch* json, size_t length, Type type) { PrettyPrefix(type); return Base::WriteRawValue(json, length); }
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protected:
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void PrettyPrefix(Type type) {
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(void)type;
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if (Base::level_stack_.GetSize() != 0) { // this value is not at root
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typename Base::Level* level = Base::level_stack_.template Top<typename Base::Level>();
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if (level->inArray) {
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if (level->valueCount > 0) {
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Base::os_->Put(','); // add comma if it is not the first element in array
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if (formatOptions_ & kFormatSingleLineArray)
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Base::os_->Put(' ');
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}
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if (!(formatOptions_ & kFormatSingleLineArray)) {
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Base::os_->Put('\n');
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WriteIndent();
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}
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}
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else { // in object
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if (level->valueCount > 0) {
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if (level->valueCount % 2 == 0) {
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Base::os_->Put(',');
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Base::os_->Put('\n');
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}
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else {
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Base::os_->Put(':');
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Base::os_->Put(' ');
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}
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}
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else
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Base::os_->Put('\n');
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if (level->valueCount % 2 == 0)
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WriteIndent();
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}
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if (!level->inArray && level->valueCount % 2 == 0)
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RAPIDJSON_ASSERT(type == kStringType); // if it's in object, then even number should be a name
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level->valueCount++;
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}
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else {
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RAPIDJSON_ASSERT(!Base::hasRoot_); // Should only has one and only one root.
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Base::hasRoot_ = true;
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}
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}
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void WriteIndent() {
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size_t count = (Base::level_stack_.GetSize() / sizeof(typename Base::Level)) * indentCharCount_;
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PutN(*Base::os_, static_cast<typename TargetEncoding::Ch>(indentChar_), count);
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}
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Ch indentChar_;
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unsigned indentCharCount_;
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PrettyFormatOptions formatOptions_;
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private:
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// Prohibit copy constructor & assignment operator.
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PrettyWriter(const PrettyWriter&);
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PrettyWriter& operator=(const PrettyWriter&);
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};
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RAPIDJSON_NAMESPACE_END
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#ifdef __GNUC__
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RAPIDJSON_DIAG_POP
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#endif
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#endif // RAPIDJSON_RAPIDJSON_H_
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