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Diffstat (limited to 'include/rapidjson/document.h')
| -rw-r--r-- | include/rapidjson/document.h | 2575 |
1 files changed, 0 insertions, 2575 deletions
diff --git a/include/rapidjson/document.h b/include/rapidjson/document.h deleted file mode 100644 index e3e20dfb..00000000 --- a/include/rapidjson/document.h +++ /dev/null @@ -1,2575 +0,0 @@ -// Tencent is pleased to support the open source community by making RapidJSON available. -// -// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved. -// -// Licensed under the MIT License (the "License"); you may not use this file except -// in compliance with the License. You may obtain a copy of the License at -// -// http://opensource.org/licenses/MIT -// -// Unless required by applicable law or agreed to in writing, software distributed -// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR -// CONDITIONS OF ANY KIND, either express or implied. See the License for the -// specific language governing permissions and limitations under the License. - -#ifndef RAPIDJSON_DOCUMENT_H_ -#define RAPIDJSON_DOCUMENT_H_ - -/*! \file document.h */ - -#include "reader.h" -#include "internal/meta.h" -#include "internal/strfunc.h" -#include "memorystream.h" -#include "encodedstream.h" -#include <new> // placement new -#include <limits> - -RAPIDJSON_DIAG_PUSH -#ifdef _MSC_VER -RAPIDJSON_DIAG_OFF(4127) // conditional expression is constant -RAPIDJSON_DIAG_OFF(4244) // conversion from kXxxFlags to 'uint16_t', possible loss of data -#endif - -#ifdef __clang__ -RAPIDJSON_DIAG_OFF(padded) -RAPIDJSON_DIAG_OFF(switch-enum) -RAPIDJSON_DIAG_OFF(c++98-compat) -#endif - -#ifdef __GNUC__ -RAPIDJSON_DIAG_OFF(effc++) -#if __GNUC__ >= 6 -RAPIDJSON_DIAG_OFF(terminate) // ignore throwing RAPIDJSON_ASSERT in RAPIDJSON_NOEXCEPT functions -#endif -#endif // __GNUC__ - -#ifndef RAPIDJSON_NOMEMBERITERATORCLASS -#include <iterator> // std::iterator, std::random_access_iterator_tag -#endif - -#if RAPIDJSON_HAS_CXX11_RVALUE_REFS -#include <utility> // std::move -#endif - -RAPIDJSON_NAMESPACE_BEGIN - -// Forward declaration. -template <typename Encoding, typename Allocator> -class GenericValue; - -template <typename Encoding, typename Allocator, typename StackAllocator> -class GenericDocument; - -//! Name-value pair in a JSON object value. -/*! - This class was internal to GenericValue. It used to be a inner struct. - But a compiler (IBM XL C/C++ for AIX) have reported to have problem with that so it moved as a namespace scope struct. - https://code.google.com/p/rapidjson/issues/detail?id=64 -*/ -template <typename Encoding, typename Allocator> -struct GenericMember { - GenericValue<Encoding, Allocator> name; //!< name of member (must be a string) - GenericValue<Encoding, Allocator> value; //!< value of member. -}; - -/////////////////////////////////////////////////////////////////////////////// -// GenericMemberIterator - -#ifndef RAPIDJSON_NOMEMBERITERATORCLASS - -//! (Constant) member iterator for a JSON object value -/*! - \tparam Const Is this a constant iterator? - \tparam Encoding Encoding of the value. (Even non-string values need to have the same encoding in a document) - \tparam Allocator Allocator type for allocating memory of object, array and string. - - This class implements a Random Access Iterator for GenericMember elements - of a GenericValue, see ISO/IEC 14882:2003(E) C++ standard, 24.1 [lib.iterator.requirements]. - - \note This iterator implementation is mainly intended to avoid implicit - conversions from iterator values to \c NULL, - e.g. from GenericValue::FindMember. - - \note Define \c RAPIDJSON_NOMEMBERITERATORCLASS to fall back to a - pointer-based implementation, if your platform doesn't provide - the C++ <iterator> header. - - \see GenericMember, GenericValue::MemberIterator, GenericValue::ConstMemberIterator - */ -template <bool Const, typename Encoding, typename Allocator> -class GenericMemberIterator - : public std::iterator<std::random_access_iterator_tag - , typename internal::MaybeAddConst<Const,GenericMember<Encoding,Allocator> >::Type> { - - friend class GenericValue<Encoding,Allocator>; - template <bool, typename, typename> friend class GenericMemberIterator; - - typedef GenericMember<Encoding,Allocator> PlainType; - typedef typename internal::MaybeAddConst<Const,PlainType>::Type ValueType; - typedef std::iterator<std::random_access_iterator_tag,ValueType> BaseType; - -public: - //! Iterator type itself - typedef GenericMemberIterator Iterator; - //! Constant iterator type - typedef GenericMemberIterator<true,Encoding,Allocator> ConstIterator; - //! Non-constant iterator type - typedef GenericMemberIterator<false,Encoding,Allocator> NonConstIterator; - - //! Pointer to (const) GenericMember - typedef typename BaseType::pointer Pointer; - //! Reference to (const) GenericMember - typedef typename BaseType::reference Reference; - //! Signed integer type (e.g. \c ptrdiff_t) - typedef typename BaseType::difference_type DifferenceType; - - //! Default constructor (singular value) - /*! Creates an iterator pointing to no element. - \note All operations, except for comparisons, are undefined on such values. - */ - GenericMemberIterator() : ptr_() {} - - //! Iterator conversions to more const - /*! - \param it (Non-const) iterator to copy from - - Allows the creation of an iterator from another GenericMemberIterator - that is "less const". Especially, creating a non-constant iterator - from a constant iterator are disabled: - \li const -> non-const (not ok) - \li const -> const (ok) - \li non-const -> const (ok) - \li non-const -> non-const (ok) - - \note If the \c Const template parameter is already \c false, this - constructor effectively defines a regular copy-constructor. - Otherwise, the copy constructor is implicitly defined. - */ - GenericMemberIterator(const NonConstIterator & it) : ptr_(it.ptr_) {} - Iterator& operator=(const NonConstIterator & it) { ptr_ = it.ptr_; return *this; } - - //! @name stepping - //@{ - Iterator& operator++(){ ++ptr_; return *this; } - Iterator& operator--(){ --ptr_; return *this; } - Iterator operator++(int){ Iterator old(*this); ++ptr_; return old; } - Iterator operator--(int){ Iterator old(*this); --ptr_; return old; } - //@} - - //! @name increment/decrement - //@{ - Iterator operator+(DifferenceType n) const { return Iterator(ptr_+n); } - Iterator operator-(DifferenceType n) const { return Iterator(ptr_-n); } - - Iterator& operator+=(DifferenceType n) { ptr_+=n; return *this; } - Iterator& operator-=(DifferenceType n) { ptr_-=n; return *this; } - //@} - - //! @name relations - //@{ - bool operator==(ConstIterator that) const { return ptr_ == that.ptr_; } - bool operator!=(ConstIterator that) const { return ptr_ != that.ptr_; } - bool operator<=(ConstIterator that) const { return ptr_ <= that.ptr_; } - bool operator>=(ConstIterator that) const { return ptr_ >= that.ptr_; } - bool operator< (ConstIterator that) const { return ptr_ < that.ptr_; } - bool operator> (ConstIterator that) const { return ptr_ > that.ptr_; } - //@} - - //! @name dereference - //@{ - Reference operator*() const { return *ptr_; } - Pointer operator->() const { return ptr_; } - Reference operator[](DifferenceType n) const { return ptr_[n]; } - //@} - - //! Distance - DifferenceType operator-(ConstIterator that) const { return ptr_-that.ptr_; } - -private: - //! Internal constructor from plain pointer - explicit GenericMemberIterator(Pointer p) : ptr_(p) {} - - Pointer ptr_; //!< raw pointer -}; - -#else // RAPIDJSON_NOMEMBERITERATORCLASS - -// class-based member iterator implementation disabled, use plain pointers - -template <bool Const, typename Encoding, typename Allocator> -struct GenericMemberIterator; - -//! non-const GenericMemberIterator -template <typename Encoding, typename Allocator> -struct GenericMemberIterator<false,Encoding,Allocator> { - //! use plain pointer as iterator type - typedef GenericMember<Encoding,Allocator>* Iterator; -}; -//! const GenericMemberIterator -template <typename Encoding, typename Allocator> -struct GenericMemberIterator<true,Encoding,Allocator> { - //! use plain const pointer as iterator type - typedef const GenericMember<Encoding,Allocator>* Iterator; -}; - -#endif // RAPIDJSON_NOMEMBERITERATORCLASS - -/////////////////////////////////////////////////////////////////////////////// -// GenericStringRef - -//! Reference to a constant string (not taking a copy) -/*! - \tparam CharType character type of the string - - This helper class is used to automatically infer constant string - references for string literals, especially from \c const \b (!) - character arrays. - - The main use is for creating JSON string values without copying the - source string via an \ref Allocator. This requires that the referenced - string pointers have a sufficient lifetime, which exceeds the lifetime - of the associated GenericValue. - - \b Example - \code - Value v("foo"); // ok, no need to copy & calculate length - const char foo[] = "foo"; - v.SetString(foo); // ok - - const char* bar = foo; - // Value x(bar); // not ok, can't rely on bar's lifetime - Value x(StringRef(bar)); // lifetime explicitly guaranteed by user - Value y(StringRef(bar, 3)); // ok, explicitly pass length - \endcode - - \see StringRef, GenericValue::SetString -*/ -template<typename CharType> -struct GenericStringRef { - typedef CharType Ch; //!< character type of the string - - //! Create string reference from \c const character array -#ifndef __clang__ // -Wdocumentation - /*! - This constructor implicitly creates a constant string reference from - a \c const character array. It has better performance than - \ref StringRef(const CharType*) by inferring the string \ref length - from the array length, and also supports strings containing null - characters. - - \tparam N length of the string, automatically inferred - - \param str Constant character array, lifetime assumed to be longer - than the use of the string in e.g. a GenericValue - - \post \ref s == str - - \note Constant complexity. - \note There is a hidden, private overload to disallow references to - non-const character arrays to be created via this constructor. - By this, e.g. function-scope arrays used to be filled via - \c snprintf are excluded from consideration. - In such cases, the referenced string should be \b copied to the - GenericValue instead. - */ -#endif - template<SizeType N> - GenericStringRef(const CharType (&str)[N]) RAPIDJSON_NOEXCEPT - : s(str), length(N-1) {} - - //! Explicitly create string reference from \c const character pointer -#ifndef __clang__ // -Wdocumentation - /*! - This constructor can be used to \b explicitly create a reference to - a constant string pointer. - - \see StringRef(const CharType*) - - \param str Constant character pointer, lifetime assumed to be longer - than the use of the string in e.g. a GenericValue - - \post \ref s == str - - \note There is a hidden, private overload to disallow references to - non-const character arrays to be created via this constructor. - By this, e.g. function-scope arrays used to be filled via - \c snprintf are excluded from consideration. - In such cases, the referenced string should be \b copied to the - GenericValue instead. - */ -#endif - explicit GenericStringRef(const CharType* str) - : s(str), length(internal::StrLen(str)){ RAPIDJSON_ASSERT(s != 0); } - - //! Create constant string reference from pointer and length -#ifndef __clang__ // -Wdocumentation - /*! \param str constant string, lifetime assumed to be longer than the use of the string in e.g. a GenericValue - \param len length of the string, excluding the trailing NULL terminator - - \post \ref s == str && \ref length == len - \note Constant complexity. - */ -#endif - GenericStringRef(const CharType* str, SizeType len) - : s(str), length(len) { RAPIDJSON_ASSERT(s != 0); } - - GenericStringRef(const GenericStringRef& rhs) : s(rhs.s), length(rhs.length) {} - - GenericStringRef& operator=(const GenericStringRef& rhs) { s = rhs.s; length = rhs.length; } - - //! implicit conversion to plain CharType pointer - operator const Ch *() const { return s; } - - const Ch* const s; //!< plain CharType pointer - const SizeType length; //!< length of the string (excluding the trailing NULL terminator) - -private: - //! Disallow construction from non-const array - template<SizeType N> - GenericStringRef(CharType (&str)[N]) /* = delete */; -}; - -//! Mark a character pointer as constant string -/*! Mark a plain character pointer as a "string literal". This function - can be used to avoid copying a character string to be referenced as a - value in a JSON GenericValue object, if the string's lifetime is known - to be valid long enough. - \tparam CharType Character type of the string - \param str Constant string, lifetime assumed to be longer than the use of the string in e.g. a GenericValue - \return GenericStringRef string reference object - \relatesalso GenericStringRef - - \see GenericValue::GenericValue(StringRefType), GenericValue::operator=(StringRefType), GenericValue::SetString(StringRefType), GenericValue::PushBack(StringRefType, Allocator&), GenericValue::AddMember -*/ -template<typename CharType> -inline GenericStringRef<CharType> StringRef(const CharType* str) { - return GenericStringRef<CharType>(str, internal::StrLen(str)); -} - -//! Mark a character pointer as constant string -/*! Mark a plain character pointer as a "string literal". This function - can be used to avoid copying a character string to be referenced as a - value in a JSON GenericValue object, if the string's lifetime is known - to be valid long enough. - - This version has better performance with supplied length, and also - supports string containing null characters. - - \tparam CharType character type of the string - \param str Constant string, lifetime assumed to be longer than the use of the string in e.g. a GenericValue - \param length The length of source string. - \return GenericStringRef string reference object - \relatesalso GenericStringRef -*/ -template<typename CharType> -inline GenericStringRef<CharType> StringRef(const CharType* str, size_t length) { - return GenericStringRef<CharType>(str, SizeType(length)); -} - -#if RAPIDJSON_HAS_STDSTRING -//! Mark a string object as constant string -/*! Mark a string object (e.g. \c std::string) as a "string literal". - This function can be used to avoid copying a string to be referenced as a - value in a JSON GenericValue object, if the string's lifetime is known - to be valid long enough. - - \tparam CharType character type of the string - \param str Constant string, lifetime assumed to be longer than the use of the string in e.g. a GenericValue - \return GenericStringRef string reference object - \relatesalso GenericStringRef - \note Requires the definition of the preprocessor symbol \ref RAPIDJSON_HAS_STDSTRING. -*/ -template<typename CharType> -inline GenericStringRef<CharType> StringRef(const std::basic_string<CharType>& str) { - return GenericStringRef<CharType>(str.data(), SizeType(str.size())); -} -#endif - -/////////////////////////////////////////////////////////////////////////////// -// GenericValue type traits -namespace internal { - -template <typename T, typename Encoding = void, typename Allocator = void> -struct IsGenericValueImpl : FalseType {}; - -// select candidates according to nested encoding and allocator types -template <typename T> struct IsGenericValueImpl<T, typename Void<typename T::EncodingType>::Type, typename Void<typename T::AllocatorType>::Type> - : IsBaseOf<GenericValue<typename T::EncodingType, typename T::AllocatorType>, T>::Type {}; - -// helper to match arbitrary GenericValue instantiations, including derived classes -template <typename T> struct IsGenericValue : IsGenericValueImpl<T>::Type {}; - -} // namespace internal - -/////////////////////////////////////////////////////////////////////////////// -// TypeHelper - -namespace internal { - -template <typename ValueType, typename T> -struct TypeHelper {}; - -template<typename ValueType> -struct TypeHelper<ValueType, bool> { - static bool Is(const ValueType& v) { return v.IsBool(); } - static bool Get(const ValueType& v) { return v.GetBool(); } - static ValueType& Set(ValueType& v, bool data) { return v.SetBool(data); } - static ValueType& Set(ValueType& v, bool data, typename ValueType::AllocatorType&) { return v.SetBool(data); } -}; - -template<typename ValueType> -struct TypeHelper<ValueType, int> { - static bool Is(const ValueType& v) { return v.IsInt(); } - static int Get(const ValueType& v) { return v.GetInt(); } - static ValueType& Set(ValueType& v, int data) { return v.SetInt(data); } - static ValueType& Set(ValueType& v, int data, typename ValueType::AllocatorType&) { return v.SetInt(data); } -}; - -template<typename ValueType> -struct TypeHelper<ValueType, unsigned> { - static bool Is(const ValueType& v) { return v.IsUint(); } - static unsigned Get(const ValueType& v) { return v.GetUint(); } - static ValueType& Set(ValueType& v, unsigned data) { return v.SetUint(data); } - static ValueType& Set(ValueType& v, unsigned data, typename ValueType::AllocatorType&) { return v.SetUint(data); } -}; - -template<typename ValueType> -struct TypeHelper<ValueType, int64_t> { - static bool Is(const ValueType& v) { return v.IsInt64(); } - static int64_t Get(const ValueType& v) { return v.GetInt64(); } - static ValueType& Set(ValueType& v, int64_t data) { return v.SetInt64(data); } - static ValueType& Set(ValueType& v, int64_t data, typename ValueType::AllocatorType&) { return v.SetInt64(data); } -}; - -template<typename ValueType> -struct TypeHelper<ValueType, uint64_t> { - static bool Is(const ValueType& v) { return v.IsUint64(); } - static uint64_t Get(const ValueType& v) { return v.GetUint64(); } - static ValueType& Set(ValueType& v, uint64_t data) { return v.SetUint64(data); } - static ValueType& Set(ValueType& v, uint64_t data, typename ValueType::AllocatorType&) { return v.SetUint64(data); } -}; - -template<typename ValueType> -struct TypeHelper<ValueType, double> { - static bool Is(const ValueType& v) { return v.IsDouble(); } - static double Get(const ValueType& v) { return v.GetDouble(); } - static ValueType& Set(ValueType& v, double data) { return v.SetDouble(data); } - static ValueType& Set(ValueType& v, double data, typename ValueType::AllocatorType&) { return v.SetDouble(data); } -}; - -template<typename ValueType> -struct TypeHelper<ValueType, float> { - static bool Is(const ValueType& v) { return v.IsFloat(); } - static float Get(const ValueType& v) { return v.GetFloat(); } - static ValueType& Set(ValueType& v, float data) { return v.SetFloat(data); } - static ValueType& Set(ValueType& v, float data, typename ValueType::AllocatorType&) { return v.SetFloat(data); } -}; - -template<typename ValueType> -struct TypeHelper<ValueType, const typename ValueType::Ch*> { - typedef const typename ValueType::Ch* StringType; - static bool Is(const ValueType& v) { return v.IsString(); } - static StringType Get(const ValueType& v) { return v.GetString(); } - static ValueType& Set(ValueType& v, const StringType data) { return v.SetString(typename ValueType::StringRefType(data)); } - static ValueType& Set(ValueType& v, const StringType data, typename ValueType::AllocatorType& a) { return v.SetString(data, a); } -}; - -#if RAPIDJSON_HAS_STDSTRING -template<typename ValueType> -struct TypeHelper<ValueType, std::basic_string<typename ValueType::Ch> > { - typedef std::basic_string<typename ValueType::Ch> StringType; - static bool Is(const ValueType& v) { return v.IsString(); } - static StringType Get(const ValueType& v) { return StringType(v.GetString(), v.GetStringLength()); } - static ValueType& Set(ValueType& v, const StringType& data, typename ValueType::AllocatorType& a) { return v.SetString(data, a); } -}; -#endif - -template<typename ValueType> -struct TypeHelper<ValueType, typename ValueType::Array> { - typedef typename ValueType::Array ArrayType; - static bool Is(const ValueType& v) { return v.IsArray(); } - static ArrayType Get(ValueType& v) { return v.GetArray(); } - static ValueType& Set(ValueType& v, ArrayType data) { return v = data; } - static ValueType& Set(ValueType& v, ArrayType data, typename ValueType::AllocatorType&) { return v = data; } -}; - -template<typename ValueType> -struct TypeHelper<ValueType, typename ValueType::ConstArray> { - typedef typename ValueType::ConstArray ArrayType; - static bool Is(const ValueType& v) { return v.IsArray(); } - static ArrayType Get(const ValueType& v) { return v.GetArray(); } -}; - -template<typename ValueType> -struct TypeHelper<ValueType, typename ValueType::Object> { - typedef typename ValueType::Object ObjectType; - static bool Is(const ValueType& v) { return v.IsObject(); } - static ObjectType Get(ValueType& v) { return v.GetObject(); } - static ValueType& Set(ValueType& v, ObjectType data) { return v = data; } - static ValueType& Set(ValueType& v, ObjectType data, typename ValueType::AllocatorType&) { v = data; } -}; - -template<typename ValueType> -struct TypeHelper<ValueType, typename ValueType::ConstObject> { - typedef typename ValueType::ConstObject ObjectType; - static bool Is(const ValueType& v) { return v.IsObject(); } - static ObjectType Get(const ValueType& v) { return v.GetObject(); } -}; - -} // namespace internal - -// Forward declarations -template <bool, typename> class GenericArray; -template <bool, typename> class GenericObject; - -/////////////////////////////////////////////////////////////////////////////// -// GenericValue - -//! Represents a JSON value. Use Value for UTF8 encoding and default allocator. -/*! - A JSON value can be one of 7 types. This class is a variant type supporting - these types. - - Use the Value if UTF8 and default allocator - - \tparam Encoding Encoding of the value. (Even non-string values need to have the same encoding in a document) - \tparam Allocator Allocator type for allocating memory of object, array and string. -*/ -template <typename Encoding, typename Allocator = MemoryPoolAllocator<> > -class GenericValue { -public: - //! Name-value pair in an object. - typedef GenericMember<Encoding, Allocator> Member; - typedef Encoding EncodingType; //!< Encoding type from template parameter. - typedef Allocator AllocatorType; //!< Allocator type from template parameter. - typedef typename Encoding::Ch Ch; //!< Character type derived from Encoding. - typedef GenericStringRef<Ch> StringRefType; //!< Reference to a constant string - typedef typename GenericMemberIterator<false,Encoding,Allocator>::Iterator MemberIterator; //!< Member iterator for iterating in object. - typedef typename GenericMemberIterator<true,Encoding,Allocator>::Iterator ConstMemberIterator; //!< Constant member iterator for iterating in object. - typedef GenericValue* ValueIterator; //!< Value iterator for iterating in array. - typedef const GenericValue* ConstValueIterator; //!< Constant value iterator for iterating in array. - typedef GenericValue<Encoding, Allocator> ValueType; //!< Value type of itself. - typedef GenericArray<false, ValueType> Array; - typedef GenericArray<true, ValueType> ConstArray; - typedef GenericObject<false, ValueType> Object; - typedef GenericObject<true, ValueType> ConstObject; - - //!@name Constructors and destructor. - //@{ - - //! Default constructor creates a null value. - GenericValue() RAPIDJSON_NOEXCEPT : data_() { data_.f.flags = kNullFlag; } - -#if RAPIDJSON_HAS_CXX11_RVALUE_REFS - //! Move constructor in C++11 - GenericValue(GenericValue&& rhs) RAPIDJSON_NOEXCEPT : data_(rhs.data_) { - rhs.data_.f.flags = kNullFlag; // give up contents - } -#endif - -private: - //! Copy constructor is not permitted. - GenericValue(const GenericValue& rhs); - -#if RAPIDJSON_HAS_CXX11_RVALUE_REFS - //! Moving from a GenericDocument is not permitted. - template <typename StackAllocator> - GenericValue(GenericDocument<Encoding,Allocator,StackAllocator>&& rhs); - - //! Move assignment from a GenericDocument is not permitted. - template <typename StackAllocator> - GenericValue& operator=(GenericDocument<Encoding,Allocator,StackAllocator>&& rhs); -#endif - -public: - - //! Constructor with JSON value type. - /*! This creates a Value of specified type with default content. - \param type Type of the value. - \note Default content for number is zero. - */ - explicit GenericValue(Type type) RAPIDJSON_NOEXCEPT : data_() { - static const uint16_t defaultFlags[7] = { - kNullFlag, kFalseFlag, kTrueFlag, kObjectFlag, kArrayFlag, kShortStringFlag, - kNumberAnyFlag - }; - RAPIDJSON_ASSERT(type <= kNumberType); - data_.f.flags = defaultFlags[type]; - - // Use ShortString to store empty string. - if (type == kStringType) - data_.ss.SetLength(0); - } - - //! Explicit copy constructor (with allocator) - /*! Creates a copy of a Value by using the given Allocator - \tparam SourceAllocator allocator of \c rhs - \param rhs Value to copy from (read-only) - \param allocator Allocator for allocating copied elements and buffers. Commonly use GenericDocument::GetAllocator(). - \see CopyFrom() - */ - template< typename SourceAllocator > - GenericValue(const GenericValue<Encoding, SourceAllocator>& rhs, Allocator & allocator); - - //! Constructor for boolean value. - /*! \param b Boolean value - \note This constructor is limited to \em real boolean values and rejects - implicitly converted types like arbitrary pointers. Use an explicit cast - to \c bool, if you want to construct a boolean JSON value in such cases. - */ -#ifndef RAPIDJSON_DOXYGEN_RUNNING // hide SFINAE from Doxygen - template <typename T> - explicit GenericValue(T b, RAPIDJSON_ENABLEIF((internal::IsSame<bool, T>))) RAPIDJSON_NOEXCEPT // See #472 -#else - explicit GenericValue(bool b) RAPIDJSON_NOEXCEPT -#endif - : data_() { - // safe-guard against failing SFINAE - RAPIDJSON_STATIC_ASSERT((internal::IsSame<bool,T>::Value)); - data_.f.flags = b ? kTrueFlag : kFalseFlag; - } - - //! Constructor for int value. - explicit GenericValue(int i) RAPIDJSON_NOEXCEPT : data_() { - data_.n.i64 = i; - data_.f.flags = (i >= 0) ? (kNumberIntFlag | kUintFlag | kUint64Flag) : kNumberIntFlag; - } - - //! Constructor for unsigned value. - explicit GenericValue(unsigned u) RAPIDJSON_NOEXCEPT : data_() { - data_.n.u64 = u; - data_.f.flags = (u & 0x80000000) ? kNumberUintFlag : (kNumberUintFlag | kIntFlag | kInt64Flag); - } - - //! Constructor for int64_t value. - explicit GenericValue(int64_t i64) RAPIDJSON_NOEXCEPT : data_() { - data_.n.i64 = i64; - data_.f.flags = kNumberInt64Flag; - if (i64 >= 0) { - data_.f.flags |= kNumberUint64Flag; - if (!(static_cast<uint64_t>(i64) & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x00000000))) - data_.f.flags |= kUintFlag; - if (!(static_cast<uint64_t>(i64) & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000))) - data_.f.flags |= kIntFlag; - } - else if (i64 >= static_cast<int64_t>(RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000))) - data_.f.flags |= kIntFlag; - } - - //! Constructor for uint64_t value. - explicit GenericValue(uint64_t u64) RAPIDJSON_NOEXCEPT : data_() { - data_.n.u64 = u64; - data_.f.flags = kNumberUint64Flag; - if (!(u64 & RAPIDJSON_UINT64_C2(0x80000000, 0x00000000))) - data_.f.flags |= kInt64Flag; - if (!(u64 & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x00000000))) - data_.f.flags |= kUintFlag; - if (!(u64 & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000))) - data_.f.flags |= kIntFlag; - } - - //! Constructor for double value. - explicit GenericValue(double d) RAPIDJSON_NOEXCEPT : data_() { data_.n.d = d; data_.f.flags = kNumberDoubleFlag; } - - //! Constructor for constant string (i.e. do not make a copy of string) - GenericValue(const Ch* s, SizeType length) RAPIDJSON_NOEXCEPT : data_() { SetStringRaw(StringRef(s, length)); } - - //! Constructor for constant string (i.e. do not make a copy of string) - explicit GenericValue(StringRefType s) RAPIDJSON_NOEXCEPT : data_() { SetStringRaw(s); } - - //! Constructor for copy-string (i.e. do make a copy of string) - GenericValue(const Ch* s, SizeType length, Allocator& allocator) : data_() { SetStringRaw(StringRef(s, length), allocator); } - - //! Constructor for copy-string (i.e. do make a copy of string) - GenericValue(const Ch*s, Allocator& allocator) : data_() { SetStringRaw(StringRef(s), allocator); } - -#if RAPIDJSON_HAS_STDSTRING - //! Constructor for copy-string from a string object (i.e. do make a copy of string) - /*! \note Requires the definition of the preprocessor symbol \ref RAPIDJSON_HAS_STDSTRING. - */ - GenericValue(const std::basic_string<Ch>& s, Allocator& allocator) : data_() { SetStringRaw(StringRef(s), allocator); } -#endif - - //! Constructor for Array. - /*! - \param a An array obtained by \c GetArray(). - \note \c Array is always pass-by-value. - \note the source array is moved into this value and the sourec array becomes empty. - */ - GenericValue(Array a) RAPIDJSON_NOEXCEPT : data_(a.value_.data_) { - a.value_.data_ = Data(); - a.value_.data_.f.flags = kArrayFlag; - } - - //! Constructor for Object. - /*! - \param o An object obtained by \c GetObject(). - \note \c Object is always pass-by-value. - \note the source object is moved into this value and the sourec object becomes empty. - */ - GenericValue(Object o) RAPIDJSON_NOEXCEPT : data_(o.value_.data_) { - o.value_.data_ = Data(); - o.value_.data_.f.flags = kObjectFlag; - } - - //! Destructor. - /*! Need to destruct elements of array, members of object, or copy-string. - */ - ~GenericValue() { - if (Allocator::kNeedFree) { // Shortcut by Allocator's trait - switch(data_.f.flags) { - case kArrayFlag: - { - GenericValue* e = GetElementsPointer(); - for (GenericValue* v = e; v != e + data_.a.size; ++v) - v->~GenericValue(); - Allocator::Free(e); - } - break; - - case kObjectFlag: - for (MemberIterator m = MemberBegin(); m != MemberEnd(); ++m) - m->~Member(); - Allocator::Free(GetMembersPointer()); - break; - - case kCopyStringFlag: - Allocator::Free(const_cast<Ch*>(GetStringPointer())); - break; - - default: - break; // Do nothing for other types. - } - } - } - - //@} - - //!@name Assignment operators - //@{ - - //! Assignment with move semantics. - /*! \param rhs Source of the assignment. It will become a null value after assignment. - */ - GenericValue& operator=(GenericValue& rhs) RAPIDJSON_NOEXCEPT { - RAPIDJSON_ASSERT(this != &rhs); - this->~GenericValue(); - RawAssign(rhs); - return *this; - } - -#if RAPIDJSON_HAS_CXX11_RVALUE_REFS - //! Move assignment in C++11 - GenericValue& operator=(GenericValue&& rhs) RAPIDJSON_NOEXCEPT { - return *this = rhs.Move(); - } -#endif - - //! Assignment of constant string reference (no copy) - /*! \param str Constant string reference to be assigned - \note This overload is needed to avoid clashes with the generic primitive type assignment overload below. - \see GenericStringRef, operator=(T) - */ - GenericValue& operator=(StringRefType str) RAPIDJSON_NOEXCEPT { - GenericValue s(str); - return *this = s; - } - - //! Assignment with primitive types. - /*! \tparam T Either \ref Type, \c int, \c unsigned, \c int64_t, \c uint64_t - \param value The value to be assigned. - - \note The source type \c T explicitly disallows all pointer types, - especially (\c const) \ref Ch*. This helps avoiding implicitly - referencing character strings with insufficient lifetime, use - \ref SetString(const Ch*, Allocator&) (for copying) or - \ref StringRef() (to explicitly mark the pointer as constant) instead. - All other pointer types would implicitly convert to \c bool, - use \ref SetBool() instead. - */ - template <typename T> - RAPIDJSON_DISABLEIF_RETURN((internal::IsPointer<T>), (GenericValue&)) - operator=(T value) { - GenericValue v(value); - return *this = v; - } - - //! Deep-copy assignment from Value - /*! Assigns a \b copy of the Value to the current Value object - \tparam SourceAllocator Allocator type of \c rhs - \param rhs Value to copy from (read-only) - \param allocator Allocator to use for copying - */ - template <typename SourceAllocator> - GenericValue& CopyFrom(const GenericValue<Encoding, SourceAllocator>& rhs, Allocator& allocator) { - RAPIDJSON_ASSERT(static_cast<void*>(this) != static_cast<void const*>(&rhs)); - this->~GenericValue(); - new (this) GenericValue(rhs, allocator); - return *this; - } - - //! Exchange the contents of this value with those of other. - /*! - \param other Another value. - \note Constant complexity. - */ - GenericValue& Swap(GenericValue& other) RAPIDJSON_NOEXCEPT { - GenericValue temp; - temp.RawAssign(*this); - RawAssign(other); - other.RawAssign(temp); - return *this; - } - - //! free-standing swap function helper - /*! - Helper function to enable support for common swap implementation pattern based on \c std::swap: - \code - void swap(MyClass& a, MyClass& b) { - using std::swap; - swap(a.value, b.value); - // ... - } - \endcode - \see Swap() - */ - friend inline void swap(GenericValue& a, GenericValue& b) RAPIDJSON_NOEXCEPT { a.Swap(b); } - - //! Prepare Value for move semantics - /*! \return *this */ - GenericValue& Move() RAPIDJSON_NOEXCEPT { return *this; } - //@} - - //!@name Equal-to and not-equal-to operators - //@{ - //! Equal-to operator - /*! - \note If an object contains duplicated named member, comparing equality with any object is always \c false. - \note Linear time complexity (number of all values in the subtree and total lengths of all strings). - */ - template <typename SourceAllocator> - bool operator==(const GenericValue<Encoding, SourceAllocator>& rhs) const { - typedef GenericValue<Encoding, SourceAllocator> RhsType; - if (GetType() != rhs.GetType()) - return false; - - switch (GetType()) { - case kObjectType: // Warning: O(n^2) inner-loop - if (data_.o.size != rhs.data_.o.size) - return false; - for (ConstMemberIterator lhsMemberItr = MemberBegin(); lhsMemberItr != MemberEnd(); ++lhsMemberItr) { - typename RhsType::ConstMemberIterator rhsMemberItr = rhs.FindMember(lhsMemberItr->name); - if (rhsMemberItr == rhs.MemberEnd() || lhsMemberItr->value != rhsMemberItr->value) - return false; - } - return true; - - case kArrayType: - if (data_.a.size != rhs.data_.a.size) - return false; - for (SizeType i = 0; i < data_.a.size; i++) - if ((*this)[i] != rhs[i]) - return false; - return true; - - case kStringType: - return StringEqual(rhs); - - case kNumberType: - if (IsDouble() || rhs.IsDouble()) { - double a = GetDouble(); // May convert from integer to double. - double b = rhs.GetDouble(); // Ditto - return a >= b && a <= b; // Prevent -Wfloat-equal - } - else - return data_.n.u64 == rhs.data_.n.u64; - - default: - return true; - } - } - - //! Equal-to operator with const C-string pointer - bool operator==(const Ch* rhs) const { return *this == GenericValue(StringRef(rhs)); } - -#if RAPIDJSON_HAS_STDSTRING - //! Equal-to operator with string object - /*! \note Requires the definition of the preprocessor symbol \ref RAPIDJSON_HAS_STDSTRING. - */ - bool operator==(const std::basic_string<Ch>& rhs) const { return *this == GenericValue(StringRef(rhs)); } -#endif - - //! Equal-to operator with primitive types - /*! \tparam T Either \ref Type, \c int, \c unsigned, \c int64_t, \c uint64_t, \c double, \c true, \c false - */ - template <typename T> RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>,internal::IsGenericValue<T> >), (bool)) operator==(const T& rhs) const { return *this == GenericValue(rhs); } - - //! Not-equal-to operator - /*! \return !(*this == rhs) - */ - template <typename SourceAllocator> - bool operator!=(const GenericValue<Encoding, SourceAllocator>& rhs) const { return !(*this == rhs); } - - //! Not-equal-to operator with const C-string pointer - bool operator!=(const Ch* rhs) const { return !(*this == rhs); } - - //! Not-equal-to operator with arbitrary types - /*! \return !(*this == rhs) - */ - template <typename T> RAPIDJSON_DISABLEIF_RETURN((internal::IsGenericValue<T>), (bool)) operator!=(const T& rhs) const { return !(*this == rhs); } - - //! Equal-to operator with arbitrary types (symmetric version) - /*! \return (rhs == lhs) - */ - template <typename T> friend RAPIDJSON_DISABLEIF_RETURN((internal::IsGenericValue<T>), (bool)) operator==(const T& lhs, const GenericValue& rhs) { return rhs == lhs; } - - //! Not-Equal-to operator with arbitrary types (symmetric version) - /*! \return !(rhs == lhs) - */ - template <typename T> friend RAPIDJSON_DISABLEIF_RETURN((internal::IsGenericValue<T>), (bool)) operator!=(const T& lhs, const GenericValue& rhs) { return !(rhs == lhs); } - //@} - - //!@name Type - //@{ - - Type GetType() const { return static_cast<Type>(data_.f.flags & kTypeMask); } - bool IsNull() const { return data_.f.flags == kNullFlag; } - bool IsFalse() const { return data_.f.flags == kFalseFlag; } - bool IsTrue() const { return data_.f.flags == kTrueFlag; } - bool IsBool() const { return (data_.f.flags & kBoolFlag) != 0; } - bool IsObject() const { return data_.f.flags == kObjectFlag; } - bool IsArray() const { return data_.f.flags == kArrayFlag; } - bool IsNumber() const { return (data_.f.flags & kNumberFlag) != 0; } - bool IsInt() const { return (data_.f.flags & kIntFlag) != 0; } - bool IsUint() const { return (data_.f.flags & kUintFlag) != 0; } - bool IsInt64() const { return (data_.f.flags & kInt64Flag) != 0; } - bool IsUint64() const { return (data_.f.flags & kUint64Flag) != 0; } - bool IsDouble() const { return (data_.f.flags & kDoubleFlag) != 0; } - bool IsString() const { return (data_.f.flags & kStringFlag) != 0; } - - // Checks whether a number can be losslessly converted to a double. - bool IsLosslessDouble() const { - if (!IsNumber()) return false; - if (IsUint64()) { - uint64_t u = GetUint64(); - volatile double d = static_cast<double>(u); - return (d >= 0.0) - && (d < static_cast<double>(std::numeric_limits<uint64_t>::max())) - && (u == static_cast<uint64_t>(d)); - } - if (IsInt64()) { - int64_t i = GetInt64(); - volatile double d = static_cast<double>(i); - return (d >= static_cast<double>(std::numeric_limits<int64_t>::min())) - && (d < static_cast<double>(std::numeric_limits<int64_t>::max())) - && (i == static_cast<int64_t>(d)); - } - return true; // double, int, uint are always lossless - } - - // Checks whether a number is a float (possible lossy). - bool IsFloat() const { - if ((data_.f.flags & kDoubleFlag) == 0) - return false; - double d = GetDouble(); - return d >= -3.4028234e38 && d <= 3.4028234e38; - } - // Checks whether a number can be losslessly converted to a float. - bool IsLosslessFloat() const { - if (!IsNumber()) return false; - double a = GetDouble(); - if (a < static_cast<double>(-std::numeric_limits<float>::max()) - || a > static_cast<double>(std::numeric_limits<float>::max())) - return false; - double b = static_cast<double>(static_cast<float>(a)); - return a >= b && a <= b; // Prevent -Wfloat-equal - } - - //@} - - //!@name Null - //@{ - - GenericValue& SetNull() { this->~GenericValue(); new (this) GenericValue(); return *this; } - - //@} - - //!@name Bool - //@{ - - bool GetBool() const { RAPIDJSON_ASSERT(IsBool()); return data_.f.flags == kTrueFlag; } - //!< Set boolean value - /*! \post IsBool() == true */ - GenericValue& SetBool(bool b) { this->~GenericValue(); new (this) GenericValue(b); return *this; } - - //@} - - //!@name Object - //@{ - - //! Set this value as an empty object. - /*! \post IsObject() == true */ - GenericValue& SetObject() { this->~GenericValue(); new (this) GenericValue(kObjectType); return *this; } - - //! Get the number of members in the object. - SizeType MemberCount() const { RAPIDJSON_ASSERT(IsObject()); return data_.o.size; } - - //! Check whether the object is empty. - bool ObjectEmpty() const { RAPIDJSON_ASSERT(IsObject()); return data_.o.size == 0; } - - //! Get a value from an object associated with the name. - /*! \pre IsObject() == true - \tparam T Either \c Ch or \c const \c Ch (template used for disambiguation with \ref operator[](SizeType)) - \note In version 0.1x, if the member is not found, this function returns a null value. This makes issue 7. - Since 0.2, if the name is not correct, it will assert. - If user is unsure whether a member exists, user should use HasMember() first. - A better approach is to use FindMember(). - \note Linear time complexity. - */ - template <typename T> - RAPIDJSON_DISABLEIF_RETURN((internal::NotExpr<internal::IsSame<typename internal::RemoveConst<T>::Type, Ch> >),(GenericValue&)) operator[](T* name) { - GenericValue n(StringRef(name)); - return (*this)[n]; - } - template <typename T> - RAPIDJSON_DISABLEIF_RETURN((internal::NotExpr<internal::IsSame<typename internal::RemoveConst<T>::Type, Ch> >),(const GenericValue&)) operator[](T* name) const { return const_cast<GenericValue&>(*this)[name]; } - - //! Get a value from an object associated with the name. - /*! \pre IsObject() == true - \tparam SourceAllocator Allocator of the \c name value - - \note Compared to \ref operator[](T*), this version is faster because it does not need a StrLen(). - And it can also handle strings with embedded null characters. - - \note Linear time complexity. - */ - template <typename SourceAllocator> - GenericValue& operator[](const GenericValue<Encoding, SourceAllocator>& name) { - MemberIterator member = FindMember(name); - if (member != MemberEnd()) - return member->value; - else { - RAPIDJSON_ASSERT(false); // see above note - - // This will generate -Wexit-time-destructors in clang - // static GenericValue NullValue; - // return NullValue; - - // Use static buffer and placement-new to prevent destruction - static char buffer[sizeof(GenericValue)]; - return *new (buffer) GenericValue(); - } - } - template <typename SourceAllocator> - const GenericValue& operator[](const GenericValue<Encoding, SourceAllocator>& name) const { return const_cast<GenericValue&>(*this)[name]; } - -#if RAPIDJSON_HAS_STDSTRING - //! Get a value from an object associated with name (string object). - GenericValue& operator[](const std::basic_string<Ch>& name) { return (*this)[GenericValue(StringRef(name))]; } - const GenericValue& operator[](const std::basic_string<Ch>& name) const { return (*this)[GenericValue(StringRef(name))]; } -#endif - - //! Const member iterator - /*! \pre IsObject() == true */ - ConstMemberIterator MemberBegin() const { RAPIDJSON_ASSERT(IsObject()); return ConstMemberIterator(GetMembersPointer()); } - //! Const \em past-the-end member iterator - /*! \pre IsObject() == true */ - ConstMemberIterator MemberEnd() const { RAPIDJSON_ASSERT(IsObject()); return ConstMemberIterator(GetMembersPointer() + data_.o.size); } - //! Member iterator - /*! \pre IsObject() == true */ - MemberIterator MemberBegin() { RAPIDJSON_ASSERT(IsObject()); return MemberIterator(GetMembersPointer()); } - //! \em Past-the-end member iterator - /*! \pre IsObject() == true */ - MemberIterator MemberEnd() { RAPIDJSON_ASSERT(IsObject()); return MemberIterator(GetMembersPointer() + data_.o.size); } - - //! Check whether a member exists in the object. - /*! - \param name Member name to be searched. - \pre IsObject() == true - \return Whether a member with that name exists. - \note It is better to use FindMember() directly if you need the obtain the value as well. - \note Linear time complexity. - */ - bool HasMember(const Ch* name) const { return FindMember(name) != MemberEnd(); } - -#if RAPIDJSON_HAS_STDSTRING - //! Check whether a member exists in the object with string object. - /*! - \param name Member name to be searched. - \pre IsObject() == true - \return Whether a member with that name exists. - \note It is better to use FindMember() directly if you need the obtain the value as well. - \note Linear time complexity. - */ - bool HasMember(const std::basic_string<Ch>& name) const { return FindMember(name) != MemberEnd(); } -#endif - - //! Check whether a member exists in the object with GenericValue name. - /*! - This version is faster because it does not need a StrLen(). It can also handle string with null character. - \param name Member name to be searched. - \pre IsObject() == true - \return Whether a member with that name exists. - \note It is better to use FindMember() directly if you need the obtain the value as well. - \note Linear time complexity. - */ - template <typename SourceAllocator> - bool HasMember(const GenericValue<Encoding, SourceAllocator>& name) const { return FindMember(name) != MemberEnd(); } - - //! Find member by name. - /*! - \param name Member name to be searched. - \pre IsObject() == true - \return Iterator to member, if it exists. - Otherwise returns \ref MemberEnd(). - - \note Earlier versions of Rapidjson returned a \c NULL pointer, in case - the requested member doesn't exist. For consistency with e.g. - \c std::map, this has been changed to MemberEnd() now. - \note Linear time complexity. - */ - MemberIterator FindMember(const Ch* name) { - GenericValue n(StringRef(name)); - return FindMember(n); - } - - ConstMemberIterator FindMember(const Ch* name) const { return const_cast<GenericValue&>(*this).FindMember(name); } - - //! Find member by name. - /*! - This version is faster because it does not need a StrLen(). It can also handle string with null character. - \param name Member name to be searched. - \pre IsObject() == true - \return Iterator to member, if it exists. - Otherwise returns \ref MemberEnd(). - - \note Earlier versions of Rapidjson returned a \c NULL pointer, in case - the requested member doesn't exist. For consistency with e.g. - \c std::map, this has been changed to MemberEnd() now. - \note Linear time complexity. - */ - template <typename SourceAllocator> - MemberIterator FindMember(const GenericValue<Encoding, SourceAllocator>& name) { - RAPIDJSON_ASSERT(IsObject()); - RAPIDJSON_ASSERT(name.IsString()); - MemberIterator member = MemberBegin(); - for ( ; member != MemberEnd(); ++member) - if (name.StringEqual(member->name)) - break; - return member; - } - template <typename SourceAllocator> ConstMemberIterator FindMember(const GenericValue<Encoding, SourceAllocator>& name) const { return const_cast<GenericValue&>(*this).FindMember(name); } - -#if RAPIDJSON_HAS_STDSTRING - //! Find member by string object name. - /*! - \param name Member name to be searched. - \pre IsObject() == true - \return Iterator to member, if it exists. - Otherwise returns \ref MemberEnd(). - */ - MemberIterator FindMember(const std::basic_string<Ch>& name) { return FindMember(GenericValue(StringRef(name))); } - ConstMemberIterator FindMember(const std::basic_string<Ch>& name) const { return FindMember(GenericValue(StringRef(name))); } -#endif - - //! Add a member (name-value pair) to the object. - /*! \param name A string value as name of member. - \param value Value of any type. - \param allocator Allocator for reallocating memory. It must be the same one as used before. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \note The ownership of \c name and \c value will be transferred to this object on success. - \pre IsObject() && name.IsString() - \post name.IsNull() && value.IsNull() - \note Amortized Constant time complexity. - */ - GenericValue& AddMember(GenericValue& name, GenericValue& value, Allocator& allocator) { - RAPIDJSON_ASSERT(IsObject()); - RAPIDJSON_ASSERT(name.IsString()); - - ObjectData& o = data_.o; - if (o.size >= o.capacity) { - if (o.capacity == 0) { - o.capacity = kDefaultObjectCapacity; - SetMembersPointer(reinterpret_cast<Member*>(allocator.Malloc(o.capacity * sizeof(Member)))); - } - else { - SizeType oldCapacity = o.capacity; - o.capacity += (oldCapacity + 1) / 2; // grow by factor 1.5 - SetMembersPointer(reinterpret_cast<Member*>(allocator.Realloc(GetMembersPointer(), oldCapacity * sizeof(Member), o.capacity * sizeof(Member)))); - } - } - Member* members = GetMembersPointer(); - members[o.size].name.RawAssign(name); - members[o.size].value.RawAssign(value); - o.size++; - return *this; - } - - //! Add a constant string value as member (name-value pair) to the object. - /*! \param name A string value as name of member. - \param value constant string reference as value of member. - \param allocator Allocator for reallocating memory. It must be the same one as used before. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \pre IsObject() - \note This overload is needed to avoid clashes with the generic primitive type AddMember(GenericValue&,T,Allocator&) overload below. - \note Amortized Constant time complexity. - */ - GenericValue& AddMember(GenericValue& name, StringRefType value, Allocator& allocator) { - GenericValue v(value); - return AddMember(name, v, allocator); - } - -#if RAPIDJSON_HAS_STDSTRING - //! Add a string object as member (name-value pair) to the object. - /*! \param name A string value as name of member. - \param value constant string reference as value of member. - \param allocator Allocator for reallocating memory. It must be the same one as used before. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \pre IsObject() - \note This overload is needed to avoid clashes with the generic primitive type AddMember(GenericValue&,T,Allocator&) overload below. - \note Amortized Constant time complexity. - */ - GenericValue& AddMember(GenericValue& name, std::basic_string<Ch>& value, Allocator& allocator) { - GenericValue v(value, allocator); - return AddMember(name, v, allocator); - } -#endif - - //! Add any primitive value as member (name-value pair) to the object. - /*! \tparam T Either \ref Type, \c int, \c unsigned, \c int64_t, \c uint64_t - \param name A string value as name of member. - \param value Value of primitive type \c T as value of member - \param allocator Allocator for reallocating memory. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \pre IsObject() - - \note The source type \c T explicitly disallows all pointer types, - especially (\c const) \ref Ch*. This helps avoiding implicitly - referencing character strings with insufficient lifetime, use - \ref AddMember(StringRefType, GenericValue&, Allocator&) or \ref - AddMember(StringRefType, StringRefType, Allocator&). - All other pointer types would implicitly convert to \c bool, - use an explicit cast instead, if needed. - \note Amortized Constant time complexity. - */ - template <typename T> - RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (GenericValue&)) - AddMember(GenericValue& name, T value, Allocator& allocator) { - GenericValue v(value); - return AddMember(name, v, allocator); - } - -#if RAPIDJSON_HAS_CXX11_RVALUE_REFS - GenericValue& AddMember(GenericValue&& name, GenericValue&& value, Allocator& allocator) { - return AddMember(name, value, allocator); - } - GenericValue& AddMember(GenericValue&& name, GenericValue& value, Allocator& allocator) { - return AddMember(name, value, allocator); - } - GenericValue& AddMember(GenericValue& name, GenericValue&& value, Allocator& allocator) { - return AddMember(name, value, allocator); - } - GenericValue& AddMember(StringRefType name, GenericValue&& value, Allocator& allocator) { - GenericValue n(name); - return AddMember(n, value, allocator); - } -#endif // RAPIDJSON_HAS_CXX11_RVALUE_REFS - - - //! Add a member (name-value pair) to the object. - /*! \param name A constant string reference as name of member. - \param value Value of any type. - \param allocator Allocator for reallocating memory. It must be the same one as used before. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \note The ownership of \c value will be transferred to this object on success. - \pre IsObject() - \post value.IsNull() - \note Amortized Constant time complexity. - */ - GenericValue& AddMember(StringRefType name, GenericValue& value, Allocator& allocator) { - GenericValue n(name); - return AddMember(n, value, allocator); - } - - //! Add a constant string value as member (name-value pair) to the object. - /*! \param name A constant string reference as name of member. - \param value constant string reference as value of member. - \param allocator Allocator for reallocating memory. It must be the same one as used before. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \pre IsObject() - \note This overload is needed to avoid clashes with the generic primitive type AddMember(StringRefType,T,Allocator&) overload below. - \note Amortized Constant time complexity. - */ - GenericValue& AddMember(StringRefType name, StringRefType value, Allocator& allocator) { - GenericValue v(value); - return AddMember(name, v, allocator); - } - - //! Add any primitive value as member (name-value pair) to the object. - /*! \tparam T Either \ref Type, \c int, \c unsigned, \c int64_t, \c uint64_t - \param name A constant string reference as name of member. - \param value Value of primitive type \c T as value of member - \param allocator Allocator for reallocating memory. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \pre IsObject() - - \note The source type \c T explicitly disallows all pointer types, - especially (\c const) \ref Ch*. This helps avoiding implicitly - referencing character strings with insufficient lifetime, use - \ref AddMember(StringRefType, GenericValue&, Allocator&) or \ref - AddMember(StringRefType, StringRefType, Allocator&). - All other pointer types would implicitly convert to \c bool, - use an explicit cast instead, if needed. - \note Amortized Constant time complexity. - */ - template <typename T> - RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (GenericValue&)) - AddMember(StringRefType name, T value, Allocator& allocator) { - GenericValue n(name); - return AddMember(n, value, allocator); - } - - //! Remove all members in the object. - /*! This function do not deallocate memory in the object, i.e. the capacity is unchanged. - \note Linear time complexity. - */ - void RemoveAllMembers() { - RAPIDJSON_ASSERT(IsObject()); - for (MemberIterator m = MemberBegin(); m != MemberEnd(); ++m) - m->~Member(); - data_.o.size = 0; - } - - //! Remove a member in object by its name. - /*! \param name Name of member to be removed. - \return Whether the member existed. - \note This function may reorder the object members. Use \ref - EraseMember(ConstMemberIterator) if you need to preserve the - relative order of the remaining members. - \note Linear time complexity. - */ - bool RemoveMember(const Ch* name) { - GenericValue n(StringRef(name)); - return RemoveMember(n); - } - -#if RAPIDJSON_HAS_STDSTRING - bool RemoveMember(const std::basic_string<Ch>& name) { return RemoveMember(GenericValue(StringRef(name))); } -#endif - - template <typename SourceAllocator> - bool RemoveMember(const GenericValue<Encoding, SourceAllocator>& name) { - MemberIterator m = FindMember(name); - if (m != MemberEnd()) { - RemoveMember(m); - return true; - } - else - return false; - } - - //! Remove a member in object by iterator. - /*! \param m member iterator (obtained by FindMember() or MemberBegin()). - \return the new iterator after removal. - \note This function may reorder the object members. Use \ref - EraseMember(ConstMemberIterator) if you need to preserve the - relative order of the remaining members. - \note Constant time complexity. - */ - MemberIterator RemoveMember(MemberIterator m) { - RAPIDJSON_ASSERT(IsObject()); - RAPIDJSON_ASSERT(data_.o.size > 0); - RAPIDJSON_ASSERT(GetMembersPointer() != 0); - RAPIDJSON_ASSERT(m >= MemberBegin() && m < MemberEnd()); - - MemberIterator last(GetMembersPointer() + (data_.o.size - 1)); - if (data_.o.size > 1 && m != last) - *m = *last; // Move the last one to this place - else - m->~Member(); // Only one left, just destroy - --data_.o.size; - return m; - } - - //! Remove a member from an object by iterator. - /*! \param pos iterator to the member to remove - \pre IsObject() == true && \ref MemberBegin() <= \c pos < \ref MemberEnd() - \return Iterator following the removed element. - If the iterator \c pos refers to the last element, the \ref MemberEnd() iterator is returned. - \note This function preserves the relative order of the remaining object - members. If you do not need this, use the more efficient \ref RemoveMember(MemberIterator). - \note Linear time complexity. - */ - MemberIterator EraseMember(ConstMemberIterator pos) { - return EraseMember(pos, pos +1); - } - - //! Remove members in the range [first, last) from an object. - /*! \param first iterator to the first member to remove - \param last iterator following the last member to remove - \pre IsObject() == true && \ref MemberBegin() <= \c first <= \c last <= \ref MemberEnd() - \return Iterator following the last removed element. - \note This function preserves the relative order of the remaining object - members. - \note Linear time complexity. - */ - MemberIterator EraseMember(ConstMemberIterator first, ConstMemberIterator last) { - RAPIDJSON_ASSERT(IsObject()); - RAPIDJSON_ASSERT(data_.o.size > 0); - RAPIDJSON_ASSERT(GetMembersPointer() != 0); - RAPIDJSON_ASSERT(first >= MemberBegin()); - RAPIDJSON_ASSERT(first <= last); - RAPIDJSON_ASSERT(last <= MemberEnd()); - - MemberIterator pos = MemberBegin() + (first - MemberBegin()); - for (MemberIterator itr = pos; itr != last; ++itr) - itr->~Member(); - std::memmove(&*pos, &*last, static_cast<size_t>(MemberEnd() - last) * sizeof(Member)); - data_.o.size -= static_cast<SizeType>(last - first); - return pos; - } - - //! Erase a member in object by its name. - /*! \param name Name of member to be removed. - \return Whether the member existed. - \note Linear time complexity. - */ - bool EraseMember(const Ch* name) { - GenericValue n(StringRef(name)); - return EraseMember(n); - } - -#if RAPIDJSON_HAS_STDSTRING - bool EraseMember(const std::basic_string<Ch>& name) { return EraseMember(GenericValue(StringRef(name))); } -#endif - - template <typename SourceAllocator> - bool EraseMember(const GenericValue<Encoding, SourceAllocator>& name) { - MemberIterator m = FindMember(name); - if (m != MemberEnd()) { - EraseMember(m); - return true; - } - else - return false; - } - - Object GetObject() { RAPIDJSON_ASSERT(IsObject()); return Object(*this); } - ConstObject GetObject() const { RAPIDJSON_ASSERT(IsObject()); return ConstObject(*this); } - - //@} - - //!@name Array - //@{ - - //! Set this value as an empty array. - /*! \post IsArray == true */ - GenericValue& SetArray() { this->~GenericValue(); new (this) GenericValue(kArrayType); return *this; } - - //! Get the number of elements in array. - SizeType Size() const { RAPIDJSON_ASSERT(IsArray()); return data_.a.size; } - - //! Get the capacity of array. - SizeType Capacity() const { RAPIDJSON_ASSERT(IsArray()); return data_.a.capacity; } - - //! Check whether the array is empty. - bool Empty() const { RAPIDJSON_ASSERT(IsArray()); return data_.a.size == 0; } - - //! Remove all elements in the array. - /*! This function do not deallocate memory in the array, i.e. the capacity is unchanged. - \note Linear time complexity. - */ - void Clear() { - RAPIDJSON_ASSERT(IsArray()); - GenericValue* e = GetElementsPointer(); - for (GenericValue* v = e; v != e + data_.a.size; ++v) - v->~GenericValue(); - data_.a.size = 0; - } - - //! Get an element from array by index. - /*! \pre IsArray() == true - \param index Zero-based index of element. - \see operator[](T*) - */ - GenericValue& operator[](SizeType index) { - RAPIDJSON_ASSERT(IsArray()); - RAPIDJSON_ASSERT(index < data_.a.size); - return GetElementsPointer()[index]; - } - const GenericValue& operator[](SizeType index) const { return const_cast<GenericValue&>(*this)[index]; } - - //! Element iterator - /*! \pre IsArray() == true */ - ValueIterator Begin() { RAPIDJSON_ASSERT(IsArray()); return GetElementsPointer(); } - //! \em Past-the-end element iterator - /*! \pre IsArray() == true */ - ValueIterator End() { RAPIDJSON_ASSERT(IsArray()); return GetElementsPointer() + data_.a.size; } - //! Constant element iterator - /*! \pre IsArray() == true */ - ConstValueIterator Begin() const { return const_cast<GenericValue&>(*this).Begin(); } - //! Constant \em past-the-end element iterator - /*! \pre IsArray() == true */ - ConstValueIterator End() const { return const_cast<GenericValue&>(*this).End(); } - - //! Request the array to have enough capacity to store elements. - /*! \param newCapacity The capacity that the array at least need to have. - \param allocator Allocator for reallocating memory. It must be the same one as used before. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \note Linear time complexity. - */ - GenericValue& Reserve(SizeType newCapacity, Allocator &allocator) { - RAPIDJSON_ASSERT(IsArray()); - if (newCapacity > data_.a.capacity) { - SetElementsPointer(reinterpret_cast<GenericValue*>(allocator.Realloc(GetElementsPointer(), data_.a.capacity * sizeof(GenericValue), newCapacity * sizeof(GenericValue)))); - data_.a.capacity = newCapacity; - } - return *this; - } - - //! Append a GenericValue at the end of the array. - /*! \param value Value to be appended. - \param allocator Allocator for reallocating memory. It must be the same one as used before. Commonly use GenericDocument::GetAllocator(). - \pre IsArray() == true - \post value.IsNull() == true - \return The value itself for fluent API. - \note The ownership of \c value will be transferred to this array on success. - \note If the number of elements to be appended is known, calls Reserve() once first may be more efficient. - \note Amortized constant time complexity. - */ - GenericValue& PushBack(GenericValue& value, Allocator& allocator) { - RAPIDJSON_ASSERT(IsArray()); - if (data_.a.size >= data_.a.capacity) - Reserve(data_.a.capacity == 0 ? kDefaultArrayCapacity : (data_.a.capacity + (data_.a.capacity + 1) / 2), allocator); - GetElementsPointer()[data_.a.size++].RawAssign(value); - return *this; - } - -#if RAPIDJSON_HAS_CXX11_RVALUE_REFS - GenericValue& PushBack(GenericValue&& value, Allocator& allocator) { - return PushBack(value, allocator); - } -#endif // RAPIDJSON_HAS_CXX11_RVALUE_REFS - - //! Append a constant string reference at the end of the array. - /*! \param value Constant string reference to be appended. - \param allocator Allocator for reallocating memory. It must be the same one used previously. Commonly use GenericDocument::GetAllocator(). - \pre IsArray() == true - \return The value itself for fluent API. - \note If the number of elements to be appended is known, calls Reserve() once first may be more efficient. - \note Amortized constant time complexity. - \see GenericStringRef - */ - GenericValue& PushBack(StringRefType value, Allocator& allocator) { - return (*this).template PushBack<StringRefType>(value, allocator); - } - - //! Append a primitive value at the end of the array. - /*! \tparam T Either \ref Type, \c int, \c unsigned, \c int64_t, \c uint64_t - \param value Value of primitive type T to be appended. - \param allocator Allocator for reallocating memory. It must be the same one as used before. Commonly use GenericDocument::GetAllocator(). - \pre IsArray() == true - \return The value itself for fluent API. - \note If the number of elements to be appended is known, calls Reserve() once first may be more efficient. - - \note The source type \c T explicitly disallows all pointer types, - especially (\c const) \ref Ch*. This helps avoiding implicitly - referencing character strings with insufficient lifetime, use - \ref PushBack(GenericValue&, Allocator&) or \ref - PushBack(StringRefType, Allocator&). - All other pointer types would implicitly convert to \c bool, - use an explicit cast instead, if needed. - \note Amortized constant time complexity. - */ - template <typename T> - RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (GenericValue&)) - PushBack(T value, Allocator& allocator) { - GenericValue v(value); - return PushBack(v, allocator); - } - - //! Remove the last element in the array. - /*! - \note Constant time complexity. - */ - GenericValue& PopBack() { - RAPIDJSON_ASSERT(IsArray()); - RAPIDJSON_ASSERT(!Empty()); - GetElementsPointer()[--data_.a.size].~GenericValue(); - return *this; - } - - //! Remove an element of array by iterator. - /*! - \param pos iterator to the element to remove - \pre IsArray() == true && \ref Begin() <= \c pos < \ref End() - \return Iterator following the removed element. If the iterator pos refers to the last element, the End() iterator is returned. - \note Linear time complexity. - */ - ValueIterator Erase(ConstValueIterator pos) { - return Erase(pos, pos + 1); - } - - //! Remove elements in the range [first, last) of the array. - /*! - \param first iterator to the first element to remove - \param last iterator following the last element to remove - \pre IsArray() == true && \ref Begin() <= \c first <= \c last <= \ref End() - \return Iterator following the last removed element. - \note Linear time complexity. - */ - ValueIterator Erase(ConstValueIterator first, ConstValueIterator last) { - RAPIDJSON_ASSERT(IsArray()); - RAPIDJSON_ASSERT(data_.a.size > 0); - RAPIDJSON_ASSERT(GetElementsPointer() != 0); - RAPIDJSON_ASSERT(first >= Begin()); - RAPIDJSON_ASSERT(first <= last); - RAPIDJSON_ASSERT(last <= End()); - ValueIterator pos = Begin() + (first - Begin()); - for (ValueIterator itr = pos; itr != last; ++itr) - itr->~GenericValue(); - std::memmove(pos, last, static_cast<size_t>(End() - last) * sizeof(GenericValue)); - data_.a.size -= static_cast<SizeType>(last - first); - return pos; - } - - Array GetArray() { RAPIDJSON_ASSERT(IsArray()); return Array(*this); } - ConstArray GetArray() const { RAPIDJSON_ASSERT(IsArray()); return ConstArray(*this); } - - //@} - - //!@name Number - //@{ - - int GetInt() const { RAPIDJSON_ASSERT(data_.f.flags & kIntFlag); return data_.n.i.i; } - unsigned GetUint() const { RAPIDJSON_ASSERT(data_.f.flags & kUintFlag); return data_.n.u.u; } - int64_t GetInt64() const { RAPIDJSON_ASSERT(data_.f.flags & kInt64Flag); return data_.n.i64; } - uint64_t GetUint64() const { RAPIDJSON_ASSERT(data_.f.flags & kUint64Flag); return data_.n.u64; } - - //! Get the value as double type. - /*! \note If the value is 64-bit integer type, it may lose precision. Use \c IsLosslessDouble() to check whether the converison is lossless. - */ - double GetDouble() const { - RAPIDJSON_ASSERT(IsNumber()); - if ((data_.f.flags & kDoubleFlag) != 0) return data_.n.d; // exact type, no conversion. - if ((data_.f.flags & kIntFlag) != 0) return data_.n.i.i; // int -> double - if ((data_.f.flags & kUintFlag) != 0) return data_.n.u.u; // unsigned -> double - if ((data_.f.flags & kInt64Flag) != 0) return static_cast<double>(data_.n.i64); // int64_t -> double (may lose precision) - RAPIDJSON_ASSERT((data_.f.flags & kUint64Flag) != 0); return static_cast<double>(data_.n.u64); // uint64_t -> double (may lose precision) - } - - //! Get the value as float type. - /*! \note If the value is 64-bit integer type, it may lose precision. Use \c IsLosslessFloat() to check whether the converison is lossless. - */ - float GetFloat() const { - return static_cast<float>(GetDouble()); - } - - GenericValue& SetInt(int i) { this->~GenericValue(); new (this) GenericValue(i); return *this; } - GenericValue& SetUint(unsigned u) { this->~GenericValue(); new (this) GenericValue(u); return *this; } - GenericValue& SetInt64(int64_t i64) { this->~GenericValue(); new (this) GenericValue(i64); return *this; } - GenericValue& SetUint64(uint64_t u64) { this->~GenericValue(); new (this) GenericValue(u64); return *this; } - GenericValue& SetDouble(double d) { this->~GenericValue(); new (this) GenericValue(d); return *this; } - GenericValue& SetFloat(float f) { this->~GenericValue(); new (this) GenericValue(f); return *this; } - - //@} - - //!@name String - //@{ - - const Ch* GetString() const { RAPIDJSON_ASSERT(IsString()); return (data_.f.flags & kInlineStrFlag) ? data_.ss.str : GetStringPointer(); } - - //! Get the length of string. - /*! Since rapidjson permits "\\u0000" in the json string, strlen(v.GetString()) may not equal to v.GetStringLength(). - */ - SizeType GetStringLength() const { RAPIDJSON_ASSERT(IsString()); return ((data_.f.flags & kInlineStrFlag) ? (data_.ss.GetLength()) : data_.s.length); } - - //! Set this value as a string without copying source string. - /*! This version has better performance with supplied length, and also support string containing null character. - \param s source string pointer. - \param length The length of source string, excluding the trailing null terminator. - \return The value itself for fluent API. - \post IsString() == true && GetString() == s && GetStringLength() == length - \see SetString(StringRefType) - */ - GenericValue& SetString(const Ch* s, SizeType length) { return SetString(StringRef(s, length)); } - - //! Set this value as a string without copying source string. - /*! \param s source string reference - \return The value itself for fluent API. - \post IsString() == true && GetString() == s && GetStringLength() == s.length - */ - GenericValue& SetString(StringRefType s) { this->~GenericValue(); SetStringRaw(s); return *this; } - - //! Set this value as a string by copying from source string. - /*! This version has better performance with supplied length, and also support string containing null character. - \param s source string. - \param length The length of source string, excluding the trailing null terminator. - \param allocator Allocator for allocating copied buffer. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \post IsString() == true && GetString() != s && strcmp(GetString(),s) == 0 && GetStringLength() == length - */ - GenericValue& SetString(const Ch* s, SizeType length, Allocator& allocator) { this->~GenericValue(); SetStringRaw(StringRef(s, length), allocator); return *this; } - - //! Set this value as a string by copying from source string. - /*! \param s source string. - \param allocator Allocator for allocating copied buffer. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \post IsString() == true && GetString() != s && strcmp(GetString(),s) == 0 && GetStringLength() == length - */ - GenericValue& SetString(const Ch* s, Allocator& allocator) { return SetString(s, internal::StrLen(s), allocator); } - -#if RAPIDJSON_HAS_STDSTRING - //! Set this value as a string by copying from source string. - /*! \param s source string. - \param allocator Allocator for allocating copied buffer. Commonly use GenericDocument::GetAllocator(). - \return The value itself for fluent API. - \post IsString() == true && GetString() != s.data() && strcmp(GetString(),s.data() == 0 && GetStringLength() == s.size() - \note Requires the definition of the preprocessor symbol \ref RAPIDJSON_HAS_STDSTRING. - */ - GenericValue& SetString(const std::basic_string<Ch>& s, Allocator& allocator) { return SetString(s.data(), SizeType(s.size()), allocator); } -#endif - - //@} - - //!@name Array - //@{ - - //! Templated version for checking whether this value is type T. - /*! - \tparam T Either \c bool, \c int, \c unsigned, \c int64_t, \c uint64_t, \c double, \c float, \c const \c char*, \c std::basic_string<Ch> - */ - template <typename T> - bool Is() const { return internal::TypeHelper<ValueType, T>::Is(*this); } - - template <typename T> - T Get() const { return internal::TypeHelper<ValueType, T>::Get(*this); } - - template <typename T> - T Get() { return internal::TypeHelper<ValueType, T>::Get(*this); } - - template<typename T> - ValueType& Set(const T& data) { return internal::TypeHelper<ValueType, T>::Set(*this, data); } - - template<typename T> - ValueType& Set(const T& data, AllocatorType& allocator) { return internal::TypeHelper<ValueType, T>::Set(*this, data, allocator); } - - //@} - - //! Generate events of this value to a Handler. - /*! This function adopts the GoF visitor pattern. - Typical usage is to output this JSON value as JSON text via Writer, which is a Handler. - It can also be used to deep clone this value via GenericDocument, which is also a Handler. - \tparam Handler type of handler. - \param handler An object implementing concept Handler. - */ - template <typename Handler> - bool Accept(Handler& handler) const { - switch(GetType()) { - case kNullType: return handler.Null(); - case kFalseType: return handler.Bool(false); - case kTrueType: return handler.Bool(true); - - case kObjectType: - if (RAPIDJSON_UNLIKELY(!handler.StartObject())) - return false; - for (ConstMemberIterator m = MemberBegin(); m != MemberEnd(); ++m) { - RAPIDJSON_ASSERT(m->name.IsString()); // User may change the type of name by MemberIterator. - if (RAPIDJSON_UNLIKELY(!handler.Key(m->name.GetString(), m->name.GetStringLength(), (m->name.data_.f.flags & kCopyFlag) != 0))) - return false; - if (RAPIDJSON_UNLIKELY(!m->value.Accept(handler))) - return false; - } - return handler.EndObject(data_.o.size); - - case kArrayType: - if (RAPIDJSON_UNLIKELY(!handler.StartArray())) - return false; - for (const GenericValue* v = Begin(); v != End(); ++v) - if (RAPIDJSON_UNLIKELY(!v->Accept(handler))) - return false; - return handler.EndArray(data_.a.size); - - case kStringType: - return handler.String(GetString(), GetStringLength(), (data_.f.flags & kCopyFlag) != 0); - - default: - RAPIDJSON_ASSERT(GetType() == kNumberType); - if (IsDouble()) return handler.Double(data_.n.d); - else if (IsInt()) return handler.Int(data_.n.i.i); - else if (IsUint()) return handler.Uint(data_.n.u.u); - else if (IsInt64()) return handler.Int64(data_.n.i64); - else return handler.Uint64(data_.n.u64); - } - } - -private: - template <typename, typename> friend class GenericValue; - template <typename, typename, typename> friend class GenericDocument; - - enum { - kBoolFlag = 0x0008, - kNumberFlag = 0x0010, - kIntFlag = 0x0020, - kUintFlag = 0x0040, - kInt64Flag = 0x0080, - kUint64Flag = 0x0100, - kDoubleFlag = 0x0200, - kStringFlag = 0x0400, - kCopyFlag = 0x0800, - kInlineStrFlag = 0x1000, - - // Initial flags of different types. - kNullFlag = kNullType, - kTrueFlag = kTrueType | kBoolFlag, - kFalseFlag = kFalseType | kBoolFlag, - kNumberIntFlag = kNumberType | kNumberFlag | kIntFlag | kInt64Flag, - kNumberUintFlag = kNumberType | kNumberFlag | kUintFlag | kUint64Flag | kInt64Flag, - kNumberInt64Flag = kNumberType | kNumberFlag | kInt64Flag, - kNumberUint64Flag = kNumberType | kNumberFlag | kUint64Flag, - kNumberDoubleFlag = kNumberType | kNumberFlag | kDoubleFlag, - kNumberAnyFlag = kNumberType | kNumberFlag | kIntFlag | kInt64Flag | kUintFlag | kUint64Flag | kDoubleFlag, - kConstStringFlag = kStringType | kStringFlag, - kCopyStringFlag = kStringType | kStringFlag | kCopyFlag, - kShortStringFlag = kStringType | kStringFlag | kCopyFlag | kInlineStrFlag, - kObjectFlag = kObjectType, - kArrayFlag = kArrayType, - - kTypeMask = 0x07 - }; - - static const SizeType kDefaultArrayCapacity = 16; - static const SizeType kDefaultObjectCapacity = 16; - - struct Flag { -#if RAPIDJSON_48BITPOINTER_OPTIMIZATION - char payload[sizeof(SizeType) * 2 + 6]; // 2 x SizeType + lower 48-bit pointer -#elif RAPIDJSON_64BIT - char payload[sizeof(SizeType) * 2 + sizeof(void*) + 6]; // 6 padding bytes -#else - char payload[sizeof(SizeType) * 2 + sizeof(void*) + 2]; // 2 padding bytes -#endif - uint16_t flags; - }; - - struct String { - SizeType length; - SizeType hashcode; //!< reserved - const Ch* str; - }; // 12 bytes in 32-bit mode, 16 bytes in 64-bit mode - - // implementation detail: ShortString can represent zero-terminated strings up to MaxSize chars - // (excluding the terminating zero) and store a value to determine the length of the contained - // string in the last character str[LenPos] by storing "MaxSize - length" there. If the string - // to store has the maximal length of MaxSize then str[LenPos] will be 0 and therefore act as - // the string terminator as well. For getting the string length back from that value just use - // "MaxSize - str[LenPos]". - // This allows to store 13-chars strings in 32-bit mode, 21-chars strings in 64-bit mode, - // 13-chars strings for RAPIDJSON_48BITPOINTER_OPTIMIZATION=1 inline (for `UTF8`-encoded strings). - struct ShortString { - enum { MaxChars = sizeof(static_cast<Flag*>(0)->payload) / sizeof(Ch), MaxSize = MaxChars - 1, LenPos = MaxSize }; - Ch str[MaxChars]; - - inline static bool Usable(SizeType len) { return (MaxSize >= len); } - inline void SetLength(SizeType len) { str[LenPos] = static_cast<Ch>(MaxSize - len); } - inline SizeType GetLength() const { return static_cast<SizeType>(MaxSize - str[LenPos]); } - }; // at most as many bytes as "String" above => 12 bytes in 32-bit mode, 16 bytes in 64-bit mode - - // By using proper binary layout, retrieval of different integer types do not need conversions. - union Number { -#if RAPIDJSON_ENDIAN == RAPIDJSON_LITTLEENDIAN - struct I { - int i; - char padding[4]; - }i; - struct U { - unsigned u; - char padding2[4]; - }u; -#else - struct I { - char padding[4]; - int i; - }i; - struct U { - char padding2[4]; - unsigned u; - }u; -#endif - int64_t i64; - uint64_t u64; - double d; - }; // 8 bytes - - struct ObjectData { - SizeType size; - SizeType capacity; - Member* members; - }; // 12 bytes in 32-bit mode, 16 bytes in 64-bit mode - - struct ArrayData { - SizeType size; - SizeType capacity; - GenericValue* elements; - }; // 12 bytes in 32-bit mode, 16 bytes in 64-bit mode - - union Data { - String s; - ShortString ss; - Number n; - ObjectData o; - ArrayData a; - Flag f; - }; // 16 bytes in 32-bit mode, 24 bytes in 64-bit mode, 16 bytes in 64-bit with RAPIDJSON_48BITPOINTER_OPTIMIZATION - - RAPIDJSON_FORCEINLINE const Ch* GetStringPointer() const { return RAPIDJSON_GETPOINTER(Ch, data_.s.str); } - RAPIDJSON_FORCEINLINE const Ch* SetStringPointer(const Ch* str) { return RAPIDJSON_SETPOINTER(Ch, data_.s.str, str); } - RAPIDJSON_FORCEINLINE GenericValue* GetElementsPointer() const { return RAPIDJSON_GETPOINTER(GenericValue, data_.a.elements); } - RAPIDJSON_FORCEINLINE GenericValue* SetElementsPointer(GenericValue* elements) { return RAPIDJSON_SETPOINTER(GenericValue, data_.a.elements, elements); } - RAPIDJSON_FORCEINLINE Member* GetMembersPointer() const { return RAPIDJSON_GETPOINTER(Member, data_.o.members); } - RAPIDJSON_FORCEINLINE Member* SetMembersPointer(Member* members) { return RAPIDJSON_SETPOINTER(Member, data_.o.members, members); } - - // Initialize this value as array with initial data, without calling destructor. - void SetArrayRaw(GenericValue* values, SizeType count, Allocator& allocator) { - data_.f.flags = kArrayFlag; - if (count) { - GenericValue* e = static_cast<GenericValue*>(allocator.Malloc(count * sizeof(GenericValue))); - SetElementsPointer(e); - std::memcpy(e, values, count * sizeof(GenericValue)); - } - else - SetElementsPointer(0); - data_.a.size = data_.a.capacity = count; - } - - //! Initialize this value as object with initial data, without calling destructor. - void SetObjectRaw(Member* members, SizeType count, Allocator& allocator) { - data_.f.flags = kObjectFlag; - if (count) { - Member* m = static_cast<Member*>(allocator.Malloc(count * sizeof(Member))); - SetMembersPointer(m); - std::memcpy(m, members, count * sizeof(Member)); - } - else - SetMembersPointer(0); - data_.o.size = data_.o.capacity = count; - } - - //! Initialize this value as constant string, without calling destructor. - void SetStringRaw(StringRefType s) RAPIDJSON_NOEXCEPT { - data_.f.flags = kConstStringFlag; - SetStringPointer(s); - data_.s.length = s.length; - } - - //! Initialize this value as copy string with initial data, without calling destructor. - void SetStringRaw(StringRefType s, Allocator& allocator) { - Ch* str = 0; - if (ShortString::Usable(s.length)) { - data_.f.flags = kShortStringFlag; - data_.ss.SetLength(s.length); - str = data_.ss.str; - } else { - data_.f.flags = kCopyStringFlag; - data_.s.length = s.length; - str = static_cast<Ch *>(allocator.Malloc((s.length + 1) * sizeof(Ch))); - SetStringPointer(str); - } - std::memcpy(str, s, s.length * sizeof(Ch)); - str[s.length] = '\0'; - } - - //! Assignment without calling destructor - void RawAssign(GenericValue& rhs) RAPIDJSON_NOEXCEPT { - data_ = rhs.data_; - // data_.f.flags = rhs.data_.f.flags; - rhs.data_.f.flags = kNullFlag; - } - - template <typename SourceAllocator> - bool StringEqual(const GenericValue<Encoding, SourceAllocator>& rhs) const { - RAPIDJSON_ASSERT(IsString()); - RAPIDJSON_ASSERT(rhs.IsString()); - - const SizeType len1 = GetStringLength(); - const SizeType len2 = rhs.GetStringLength(); - if(len1 != len2) { return false; } - - const Ch* const str1 = GetString(); - const Ch* const str2 = rhs.GetString(); - if(str1 == str2) { return true; } // fast path for constant string - - return (std::memcmp(str1, str2, sizeof(Ch) * len1) == 0); - } - - Data data_; -}; - -//! GenericValue with UTF8 encoding -typedef GenericValue<UTF8<> > Value; - -/////////////////////////////////////////////////////////////////////////////// -// GenericDocument - -//! A document for parsing JSON text as DOM. -/*! - \note implements Handler concept - \tparam Encoding Encoding for both parsing and string storage. - \tparam Allocator Allocator for allocating memory for the DOM - \tparam StackAllocator Allocator for allocating memory for stack during parsing. - \warning Although GenericDocument inherits from GenericValue, the API does \b not provide any virtual functions, especially no virtual destructor. To avoid memory leaks, do not \c delete a GenericDocument object via a pointer to a GenericValue. -*/ -template <typename Encoding, typename Allocator = MemoryPoolAllocator<>, typename StackAllocator = CrtAllocator> -class GenericDocument : public GenericValue<Encoding, Allocator> { -public: - typedef typename Encoding::Ch Ch; //!< Character type derived from Encoding. - typedef GenericValue<Encoding, Allocator> ValueType; //!< Value type of the document. - typedef Allocator AllocatorType; //!< Allocator type from template parameter. - - //! Constructor - /*! Creates an empty document of specified type. - \param type Mandatory type of object to create. - \param allocator Optional allocator for allocating memory. - \param stackCapacity Optional initial capacity of stack in bytes. - \param stackAllocator Optional allocator for allocating memory for stack. - */ - explicit GenericDocument(Type type, Allocator* allocator = 0, size_t stackCapacity = kDefaultStackCapacity, StackAllocator* stackAllocator = 0) : - GenericValue<Encoding, Allocator>(type), allocator_(allocator), ownAllocator_(0), stack_(stackAllocator, stackCapacity), parseResult_() - { - if (!allocator_) - ownAllocator_ = allocator_ = RAPIDJSON_NEW(Allocator()); - } - - //! Constructor - /*! Creates an empty document which type is Null. - \param allocator Optional allocator for allocating memory. - \param stackCapacity Optional initial capacity of stack in bytes. - \param stackAllocator Optional allocator for allocating memory for stack. - */ - GenericDocument(Allocator* allocator = 0, size_t stackCapacity = kDefaultStackCapacity, StackAllocator* stackAllocator = 0) : - allocator_(allocator), ownAllocator_(0), stack_(stackAllocator, stackCapacity), parseResult_() - { - if (!allocator_) - ownAllocator_ = allocator_ = RAPIDJSON_NEW(Allocator()); - } - -#if RAPIDJSON_HAS_CXX11_RVALUE_REFS - //! Move constructor in C++11 - GenericDocument(GenericDocument&& rhs) RAPIDJSON_NOEXCEPT - : ValueType(std::forward<ValueType>(rhs)), // explicit cast to avoid prohibited move from Document - allocator_(rhs.allocator_), - ownAllocator_(rhs.ownAllocator_), - stack_(std::move(rhs.stack_)), - parseResult_(rhs.parseResult_) - { - rhs.allocator_ = 0; - rhs.ownAllocator_ = 0; - rhs.parseResult_ = ParseResult(); - } -#endif - - ~GenericDocument() { - Destroy(); - } - -#if RAPIDJSON_HAS_CXX11_RVALUE_REFS - //! Move assignment in C++11 - GenericDocument& operator=(GenericDocument&& rhs) RAPIDJSON_NOEXCEPT - { - // The cast to ValueType is necessary here, because otherwise it would - // attempt to call GenericValue's templated assignment operator. - ValueType::operator=(std::forward<ValueType>(rhs)); - - // Calling the destructor here would prematurely call stack_'s destructor - Destroy(); - - allocator_ = rhs.allocator_; - ownAllocator_ = rhs.ownAllocator_; - stack_ = std::move(rhs.stack_); - parseResult_ = rhs.parseResult_; - - rhs.allocator_ = 0; - rhs.ownAllocator_ = 0; - rhs.parseResult_ = ParseResult(); - - return *this; - } -#endif - - //! Exchange the contents of this document with those of another. - /*! - \param rhs Another document. - \note Constant complexity. - \see GenericValue::Swap - */ - GenericDocument& Swap(GenericDocument& rhs) RAPIDJSON_NOEXCEPT { - ValueType::Swap(rhs); - stack_.Swap(rhs.stack_); - internal::Swap(allocator_, rhs.allocator_); - internal::Swap(ownAllocator_, rhs.ownAllocator_); - internal::Swap(parseResult_, rhs.parseResult_); - return *this; - } - - //! free-standing swap function helper - /*! - Helper function to enable support for common swap implementation pattern based on \c std::swap: - \code - void swap(MyClass& a, MyClass& b) { - using std::swap; - swap(a.doc, b.doc); - // ... - } - \endcode - \see Swap() - */ - friend inline void swap(GenericDocument& a, GenericDocument& b) RAPIDJSON_NOEXCEPT { a.Swap(b); } - - //! Populate this document by a generator which produces SAX events. - /*! \tparam Generator A functor with <tt>bool f(Handler)</tt> prototype. - \param g Generator functor which sends SAX events to the parameter. - \return The document itself for fluent API. - */ - template <typename Generator> - GenericDocument& Populate(Generator& g) { - ClearStackOnExit scope(*this); - if (g(*this)) { - RAPIDJSON_ASSERT(stack_.GetSize() == sizeof(ValueType)); // Got one and only one root object - ValueType::operator=(*stack_.template Pop<ValueType>(1));// Move value from stack to document - } - return *this; - } - - //!@name Parse from stream - //!@{ - - //! Parse JSON text from an input stream (with Encoding conversion) - /*! \tparam parseFlags Combination of \ref ParseFlag. - \tparam SourceEncoding Encoding of input stream - \tparam InputStream Type of input stream, implementing Stream concept - \param is Input stream to be parsed. - \return The document itself for fluent API. - */ - template <unsigned parseFlags, typename SourceEncoding, typename InputStream> - GenericDocument& ParseStream(InputStream& is) { - GenericReader<SourceEncoding, Encoding, StackAllocator> reader( - stack_.HasAllocator() ? &stack_.GetAllocator() : 0); - ClearStackOnExit scope(*this); - parseResult_ = reader.template Parse<parseFlags>(is, *this); - if (parseResult_) { - RAPIDJSON_ASSERT(stack_.GetSize() == sizeof(ValueType)); // Got one and only one root object - ValueType::operator=(*stack_.template Pop<ValueType>(1));// Move value from stack to document - } - return *this; - } - - //! Parse JSON text from an input stream - /*! \tparam parseFlags Combination of \ref ParseFlag. - \tparam InputStream Type of input stream, implementing Stream concept - \param is Input stream to be parsed. - \return The document itself for fluent API. - */ - template <unsigned parseFlags, typename InputStream> - GenericDocument& ParseStream(InputStream& is) { - return ParseStream<parseFlags, Encoding, InputStream>(is); - } - - //! Parse JSON text from an input stream (with \ref kParseDefaultFlags) - /*! \tparam InputStream Type of input stream, implementing Stream concept - \param is Input stream to be parsed. - \return The document itself for fluent API. - */ - template <typename InputStream> - GenericDocument& ParseStream(InputStream& is) { - return ParseStream<kParseDefaultFlags, Encoding, InputStream>(is); - } - //!@} - - //!@name Parse in-place from mutable string - //!@{ - - //! Parse JSON text from a mutable string - /*! \tparam parseFlags Combination of \ref ParseFlag. - \param str Mutable zero-terminated string to be parsed. - \return The document itself for fluent API. - */ - template <unsigned parseFlags> - GenericDocument& ParseInsitu(Ch* str) { - GenericInsituStringStream<Encoding> s(str); - return ParseStream<parseFlags | kParseInsituFlag>(s); - } - - //! Parse JSON text from a mutable string (with \ref kParseDefaultFlags) - /*! \param str Mutable zero-terminated string to be parsed. - \return The document itself for fluent API. - */ - GenericDocument& ParseInsitu(Ch* str) { - return ParseInsitu<kParseDefaultFlags>(str); - } - //!@} - - //!@name Parse from read-only string - //!@{ - - //! Parse JSON text from a read-only string (with Encoding conversion) - /*! \tparam parseFlags Combination of \ref ParseFlag (must not contain \ref kParseInsituFlag). - \tparam SourceEncoding Transcoding from input Encoding - \param str Read-only zero-terminated string to be parsed. - */ - template <unsigned parseFlags, typename SourceEncoding> - GenericDocument& Parse(const typename SourceEncoding::Ch* str) { - RAPIDJSON_ASSERT(!(parseFlags & kParseInsituFlag)); - GenericStringStream<SourceEncoding> s(str); - return ParseStream<parseFlags, SourceEncoding>(s); - } - - //! Parse JSON text from a read-only string - /*! \tparam parseFlags Combination of \ref ParseFlag (must not contain \ref kParseInsituFlag). - \param str Read-only zero-terminated string to be parsed. - */ - template <unsigned parseFlags> - GenericDocument& Parse(const Ch* str) { - return Parse<parseFlags, Encoding>(str); - } - - //! Parse JSON text from a read-only string (with \ref kParseDefaultFlags) - /*! \param str Read-only zero-terminated string to be parsed. - */ - GenericDocument& Parse(const Ch* str) { - return Parse<kParseDefaultFlags>(str); - } - - template <unsigned parseFlags, typename SourceEncoding> - GenericDocument& Parse(const typename SourceEncoding::Ch* str, size_t length) { - RAPIDJSON_ASSERT(!(parseFlags & kParseInsituFlag)); - MemoryStream ms(static_cast<const char*>(str), length * sizeof(typename SourceEncoding::Ch)); - EncodedInputStream<SourceEncoding, MemoryStream> is(ms); - ParseStream<parseFlags, SourceEncoding>(is); - return *this; - } - - template <unsigned parseFlags> - GenericDocument& Parse(const Ch* str, size_t length) { - return Parse<parseFlags, Encoding>(str, length); - } - - GenericDocument& Parse(const Ch* str, size_t length) { - return Parse<kParseDefaultFlags>(str, length); - } - -#if RAPIDJSON_HAS_STDSTRING - template <unsigned parseFlags, typename SourceEncoding> - GenericDocument& Parse(const std::basic_string<typename SourceEncoding::Ch>& str) { - // c_str() is constant complexity according to standard. Should be faster than Parse(const char*, size_t) - return Parse<parseFlags, SourceEncoding>(str.c_str()); - } - - template <unsigned parseFlags> - GenericDocument& Parse(const std::basic_string<Ch>& str) { - return Parse<parseFlags, Encoding>(str.c_str()); - } - - GenericDocument& Parse(const std::basic_string<Ch>& str) { - return Parse<kParseDefaultFlags>(str); - } -#endif // RAPIDJSON_HAS_STDSTRING - - //!@} - - //!@name Handling parse errors - //!@{ - - //! Whether a parse error has occured in the last parsing. - bool HasParseError() const { return parseResult_.IsError(); } - - //! Get the \ref ParseErrorCode of last parsing. - ParseErrorCode GetParseError() const { return parseResult_.Code(); } - - //! Get the position of last parsing error in input, 0 otherwise. - size_t GetErrorOffset() const { return parseResult_.Offset(); } - - //! Implicit conversion to get the last parse result -#ifndef __clang // -Wdocumentation - /*! \return \ref ParseResult of the last parse operation - - \code - Document doc; - ParseResult ok = doc.Parse(json); - if (!ok) - printf( "JSON parse error: %s (%u)\n", GetParseError_En(ok.Code()), ok.Offset()); - \endcode - */ -#endif - operator ParseResult() const { return parseResult_; } - //!@} - - //! Get the allocator of this document. - Allocator& GetAllocator() { - RAPIDJSON_ASSERT(allocator_); - return *allocator_; - } - - //! Get the capacity of stack in bytes. - size_t GetStackCapacity() const { return stack_.GetCapacity(); } - -private: - // clear stack on any exit from ParseStream, e.g. due to exception - struct ClearStackOnExit { - explicit ClearStackOnExit(GenericDocument& d) : d_(d) {} - ~ClearStackOnExit() { d_.ClearStack(); } - private: - ClearStackOnExit(const ClearStackOnExit&); - ClearStackOnExit& operator=(const ClearStackOnExit&); - GenericDocument& d_; - }; - - // callers of the following private Handler functions - // template <typename,typename,typename> friend class GenericReader; // for parsing - template <typename, typename> friend class GenericValue; // for deep copying - -public: - // Implementation of Handler - bool Null() { new (stack_.template Push<ValueType>()) ValueType(); return true; } - bool Bool(bool b) { new (stack_.template Push<ValueType>()) ValueType(b); return true; } - bool Int(int i) { new (stack_.template Push<ValueType>()) ValueType(i); return true; } - bool Uint(unsigned i) { new (stack_.template Push<ValueType>()) ValueType(i); return true; } - bool Int64(int64_t i) { new (stack_.template Push<ValueType>()) ValueType(i); return true; } - bool Uint64(uint64_t i) { new (stack_.template Push<ValueType>()) ValueType(i); return true; } - bool Double(double d) { new (stack_.template Push<ValueType>()) ValueType(d); return true; } - - bool RawNumber(const Ch* str, SizeType length, bool copy) { - if (copy) - new (stack_.template Push<ValueType>()) ValueType(str, length, GetAllocator()); - else - new (stack_.template Push<ValueType>()) ValueType(str, length); - return true; - } - - bool String(const Ch* str, SizeType length, bool copy) { - if (copy) - new (stack_.template Push<ValueType>()) ValueType(str, length, GetAllocator()); - else - new (stack_.template Push<ValueType>()) ValueType(str, length); - return true; - } - - bool StartObject() { new (stack_.template Push<ValueType>()) ValueType(kObjectType); return true; } - - bool Key(const Ch* str, SizeType length, bool copy) { return String(str, length, copy); } - - bool EndObject(SizeType memberCount) { - typename ValueType::Member* members = stack_.template Pop<typename ValueType::Member>(memberCount); - stack_.template Top<ValueType>()->SetObjectRaw(members, memberCount, GetAllocator()); - return true; - } - - bool StartArray() { new (stack_.template Push<ValueType>()) ValueType(kArrayType); return true; } - - bool EndArray(SizeType elementCount) { - ValueType* elements = stack_.template Pop<ValueType>(elementCount); - stack_.template Top<ValueType>()->SetArrayRaw(elements, elementCount, GetAllocator()); - return true; - } - -private: - //! Prohibit copying - GenericDocument(const GenericDocument&); - //! Prohibit assignment - GenericDocument& operator=(const GenericDocument&); - - void ClearStack() { - if (Allocator::kNeedFree) - while (stack_.GetSize() > 0) // Here assumes all elements in stack array are GenericValue (Member is actually 2 GenericValue objects) - (stack_.template Pop<ValueType>(1))->~ValueType(); - else - stack_.Clear(); - stack_.ShrinkToFit(); - } - - void Destroy() { - RAPIDJSON_DELETE(ownAllocator_); - } - - static const size_t kDefaultStackCapacity = 1024; - Allocator* allocator_; - Allocator* ownAllocator_; - internal::Stack<StackAllocator> stack_; - ParseResult parseResult_; -}; - -//! GenericDocument with UTF8 encoding -typedef GenericDocument<UTF8<> > Document; - -// defined here due to the dependency on GenericDocument -template <typename Encoding, typename Allocator> -template <typename SourceAllocator> -inline -GenericValue<Encoding,Allocator>::GenericValue(const GenericValue<Encoding,SourceAllocator>& rhs, Allocator& allocator) -{ - switch (rhs.GetType()) { - case kObjectType: - case kArrayType: { // perform deep copy via SAX Handler - GenericDocument<Encoding,Allocator> d(&allocator); - rhs.Accept(d); - RawAssign(*d.stack_.template Pop<GenericValue>(1)); - } - break; - case kStringType: - if (rhs.data_.f.flags == kConstStringFlag) { - data_.f.flags = rhs.data_.f.flags; - data_ = *reinterpret_cast<const Data*>(&rhs.data_); - } else { - SetStringRaw(StringRef(rhs.GetString(), rhs.GetStringLength()), allocator); - } - break; - default: - data_.f.flags = rhs.data_.f.flags; - data_ = *reinterpret_cast<const Data*>(&rhs.data_); - break; - } -} - -//! Helper class for accessing Value of array type. -/*! - Instance of this helper class is obtained by \c GenericValue::GetArray(). - In addition to all APIs for array type, it provides range-based for loop if \c RAPIDJSON_HAS_CXX11_RANGE_FOR=1. -*/ -template <bool Const, typename ValueT> -class GenericArray { -public: - typedef GenericArray<true, ValueT> ConstArray; - typedef GenericArray<false, ValueT> Array; - typedef ValueT PlainType; - typedef typename internal::MaybeAddConst<Const,PlainType>::Type ValueType; - typedef ValueType* ValueIterator; // This may be const or non-const iterator - typedef const ValueT* ConstValueIterator; - typedef typename ValueType::AllocatorType AllocatorType; - typedef typename ValueType::StringRefType StringRefType; - - template <typename, typename> - friend class GenericValue; - - GenericArray(const GenericArray& rhs) : value_(rhs.value_) {} - GenericArray& operator=(const GenericArray& rhs) { value_ = rhs.value_; return *this; } - ~GenericArray() {} - - SizeType Size() const { return value_.Size(); } - SizeType Capacity() const { return value_.Capacity(); } - bool Empty() const { return value_.Empty(); } - void Clear() const { value_.Clear(); } - ValueType& operator[](SizeType index) const { return value_[index]; } - ValueIterator Begin() const { return value_.Begin(); } - ValueIterator End() const { return value_.End(); } - GenericArray Reserve(SizeType newCapacity, AllocatorType &allocator) const { value_.Reserve(newCapacity, allocator); return *this; } - GenericArray PushBack(ValueType& value, AllocatorType& allocator) const { value_.PushBack(value, allocator); return *this; } -#if RAPIDJSON_HAS_CXX11_RVALUE_REFS - GenericArray PushBack(ValueType&& value, AllocatorType& allocator) const { value_.PushBack(value, allocator); return *this; } -#endif // RAPIDJSON_HAS_CXX11_RVALUE_REFS - GenericArray PushBack(StringRefType value, AllocatorType& allocator) const { value_.PushBack(value, allocator); return *this; } - template <typename T> RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (const GenericArray&)) PushBack(T value, AllocatorType& allocator) const { value_.PushBack(value, allocator); return *this; } - GenericArray PopBack() const { value_.PopBack(); return *this; } - ValueIterator Erase(ConstValueIterator pos) const { return value_.Erase(pos); } - ValueIterator Erase(ConstValueIterator first, ConstValueIterator last) const { return value_.Erase(first, last); } - -#if RAPIDJSON_HAS_CXX11_RANGE_FOR - ValueIterator begin() const { return value_.Begin(); } - ValueIterator end() const { return value_.End(); } -#endif - -private: - GenericArray(); - GenericArray(ValueType& value) : value_(value) {} - ValueType& value_; -}; - -//! Helper class for accessing Value of object type. -/*! - Instance of this helper class is obtained by \c GenericValue::GetObject(). - In addition to all APIs for array type, it provides range-based for loop if \c RAPIDJSON_HAS_CXX11_RANGE_FOR=1. -*/ -template <bool Const, typename ValueT> -class GenericObject { -public: - typedef GenericObject<true, ValueT> ConstObject; - typedef GenericObject<false, ValueT> Object; - typedef ValueT PlainType; - typedef typename internal::MaybeAddConst<Const,PlainType>::Type ValueType; - typedef GenericMemberIterator<Const, typename ValueT::EncodingType, typename ValueT::AllocatorType> MemberIterator; // This may be const or non-const iterator - typedef GenericMemberIterator<true, typename ValueT::EncodingType, typename ValueT::AllocatorType> ConstMemberIterator; - typedef typename ValueType::AllocatorType AllocatorType; - typedef typename ValueType::StringRefType StringRefType; - typedef typename ValueType::EncodingType EncodingType; - typedef typename ValueType::Ch Ch; - - template <typename, typename> - friend class GenericValue; - - GenericObject(const GenericObject& rhs) : value_(rhs.value_) {} - GenericObject& operator=(const GenericObject& rhs) { value_ = rhs.value_; return *this; } - ~GenericObject() {} - - SizeType MemberCount() const { return value_.MemberCount(); } - bool ObjectEmpty() const { return value_.ObjectEmpty(); } - template <typename T> ValueType& operator[](T* name) const { return value_[name]; } - template <typename SourceAllocator> ValueType& operator[](const GenericValue<EncodingType, SourceAllocator>& name) const { return value_[name]; } -#if RAPIDJSON_HAS_STDSTRING - ValueType& operator[](const std::basic_string<Ch>& name) const { return value_[name]; } -#endif - MemberIterator MemberBegin() const { return value_.MemberBegin(); } - MemberIterator MemberEnd() const { return value_.MemberEnd(); } - bool HasMember(const Ch* name) const { return value_.HasMember(name); } -#if RAPIDJSON_HAS_STDSTRING - bool HasMember(const std::basic_string<Ch>& name) const { return value_.HasMember(name); } -#endif - template <typename SourceAllocator> bool HasMember(const GenericValue<EncodingType, SourceAllocator>& name) const { return value_.HasMember(name); } - MemberIterator FindMember(const Ch* name) const { return value_.FindMember(name); } - template <typename SourceAllocator> MemberIterator FindMember(const GenericValue<EncodingType, SourceAllocator>& name) const { return value_.FindMember(name); } -#if RAPIDJSON_HAS_STDSTRING - MemberIterator FindMember(const std::basic_string<Ch>& name) const { return value_.FindMember(name); } -#endif - GenericObject AddMember(ValueType& name, ValueType& value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } - GenericObject AddMember(ValueType& name, StringRefType value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } -#if RAPIDJSON_HAS_STDSTRING - GenericObject AddMember(ValueType& name, std::basic_string<Ch>& value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } -#endif - template <typename T> RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (ValueType&)) AddMember(ValueType& name, T value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } -#if RAPIDJSON_HAS_CXX11_RVALUE_REFS - GenericObject AddMember(ValueType&& name, ValueType&& value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } - GenericObject AddMember(ValueType&& name, ValueType& value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } - GenericObject AddMember(ValueType& name, ValueType&& value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } - GenericObject AddMember(StringRefType name, ValueType&& value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } -#endif // RAPIDJSON_HAS_CXX11_RVALUE_REFS - GenericObject AddMember(StringRefType name, ValueType& value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } - GenericObject AddMember(StringRefType name, StringRefType value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } - template <typename T> RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (GenericObject)) AddMember(StringRefType name, T value, AllocatorType& allocator) const { value_.AddMember(name, value, allocator); return *this; } - void RemoveAllMembers() { return value_.RemoveAllMembers(); } - bool RemoveMember(const Ch* name) const { return value_.RemoveMember(name); } -#if RAPIDJSON_HAS_STDSTRING - bool RemoveMember(const std::basic_string<Ch>& name) const { return value_.RemoveMember(name); } -#endif - template <typename SourceAllocator> bool RemoveMember(const GenericValue<EncodingType, SourceAllocator>& name) const { return value_.RemoveMember(name); } - MemberIterator RemoveMember(MemberIterator m) const { return value_.RemoveMember(m); } - MemberIterator EraseMember(ConstMemberIterator pos) const { return value_.EraseMember(pos); } - MemberIterator EraseMember(ConstMemberIterator first, ConstMemberIterator last) const { return value_.EraseMember(first, last); } - bool EraseMember(const Ch* name) const { return value_.EraseMember(name); } -#if RAPIDJSON_HAS_STDSTRING - bool EraseMember(const std::basic_string<Ch>& name) const { return EraseMember(ValueType(StringRef(name))); } -#endif - template <typename SourceAllocator> bool EraseMember(const GenericValue<EncodingType, SourceAllocator>& name) const { return value_.EraseMember(name); } - -#if RAPIDJSON_HAS_CXX11_RANGE_FOR - MemberIterator begin() const { return value_.MemberBegin(); } - MemberIterator end() const { return value_.MemberEnd(); } -#endif - -private: - GenericObject(); - GenericObject(ValueType& value) : value_(value) {} - ValueType& value_; -}; - -RAPIDJSON_NAMESPACE_END -RAPIDJSON_DIAG_POP - -#endif // RAPIDJSON_DOCUMENT_H_ |