diff options
| author | BobTheBob9 <for.oliver.kirkham@gmail.com> | 2022-08-16 01:12:59 +0100 |
|---|---|---|
| committer | BobTheBob9 <for.oliver.kirkham@gmail.com> | 2022-08-16 01:12:59 +0100 |
| commit | 082f3893215797268d7ac8c1000ebe371f276af7 (patch) | |
| tree | b5cc677a49635a9244559e235d4915c064c9f6c4 /NorthstarDLL/include/rapidjson/document.h | |
| parent | b30a385fc25dad05e568ae8538f5aa3656c5c8d4 (diff) | |
| download | NorthstarLauncher-082f3893215797268d7ac8c1000ebe371f276af7.tar.gz NorthstarLauncher-082f3893215797268d7ac8c1000ebe371f276af7.zip | |
lots of stuff idk
Diffstat (limited to 'NorthstarDLL/include/rapidjson/document.h')
| -rw-r--r-- | NorthstarDLL/include/rapidjson/document.h | 5150 |
1 files changed, 2575 insertions, 2575 deletions
diff --git a/NorthstarDLL/include/rapidjson/document.h b/NorthstarDLL/include/rapidjson/document.h index 99fc657c..e3e20dfb 100644 --- a/NorthstarDLL/include/rapidjson/document.h +++ b/NorthstarDLL/include/rapidjson/document.h @@ -1,2575 +1,2575 @@ -// 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_
+// 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_ |