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Diffstat (limited to 'sl4n/rapidjson/include/rapidjson/document.h')
| -rw-r--r-- | sl4n/rapidjson/include/rapidjson/document.h | 2114 |
1 files changed, 0 insertions, 2114 deletions
diff --git a/sl4n/rapidjson/include/rapidjson/document.h b/sl4n/rapidjson/include/rapidjson/document.h deleted file mode 100644 index f3b3762..0000000 --- a/sl4n/rapidjson/include/rapidjson/document.h +++ /dev/null @@ -1,2114 +0,0 @@ -// Tencent is pleased to support the open source community by making RapidJSON available.
-//
-// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
-//
-// Licensed under the MIT License (the "License"); you may not use this file except
-// in compliance with the License. You may obtain a copy of the License at
-//
-// http://opensource.org/licenses/MIT
-//
-// Unless required by applicable law or agreed to in writing, software distributed
-// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
-// CONDITIONS OF ANY KIND, either express or implied. See the License for the
-// specific language governing permissions and limitations under the License.
-
-#ifndef RAPIDJSON_DOCUMENT_H_
-#define RAPIDJSON_DOCUMENT_H_
-
-/*! \file document.h */
-
-#include "reader.h"
-#include "internal/meta.h"
-#include "internal/strfunc.h"
-#include <new> // placement new
-
-#ifdef _MSC_VER
-RAPIDJSON_DIAG_PUSH
-RAPIDJSON_DIAG_OFF(4127) // conditional expression is constant
-#elif defined(__GNUC__)
-RAPIDJSON_DIAG_PUSH
-RAPIDJSON_DIAG_OFF(effc++)
-#endif
-
-///////////////////////////////////////////////////////////////////////////////
-// RAPIDJSON_HAS_STDSTRING
-
-#ifndef RAPIDJSON_HAS_STDSTRING
-#ifdef RAPIDJSON_DOXYGEN_RUNNING
-#define RAPIDJSON_HAS_STDSTRING 1 // force generation of documentation
-#else
-#define RAPIDJSON_HAS_STDSTRING 0 // no std::string support by default
-#endif
-/*! \def RAPIDJSON_HAS_STDSTRING
- \ingroup RAPIDJSON_CONFIG
- \brief Enable RapidJSON support for \c std::string
-
- By defining this preprocessor symbol to \c 1, several convenience functions for using
- \ref rapidjson::GenericValue with \c std::string are enabled, especially
- for construction and comparison.
-
- \hideinitializer
-*/
-#endif // !defined(RAPIDJSON_HAS_STDSTRING)
-
-#if RAPIDJSON_HAS_STDSTRING
-#include <string>
-#endif // RAPIDJSON_HAS_STDSTRING
-
-#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_) {} // NOLINT, implicit
-
- //! @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
- /*!
- 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.
- */
- template<SizeType N>
- GenericStringRef(const CharType (&str)[N]) RAPIDJSON_NOEXCEPT // NOLINT, implicit
- : s(str), length(N-1) {}
-
- //! Explicitly create string reference from \c const character pointer
- /*!
- 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.
- */
- explicit GenericStringRef(const CharType* str)
- : s(str), length(internal::StrLen(str)){ RAPIDJSON_ASSERT(s != NULL); }
-
- //! Create constant string reference from pointer and length
- /*! \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.
- */
- GenericStringRef(const CharType* str, SizeType len)
- : s(str), length(len) { RAPIDJSON_ASSERT(s != NULL); }
-
- //! 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 copy-assignment
- GenericStringRef operator=(const GenericStringRef&);
- //! Disallow construction from non-const array
- template<SizeType N>
- GenericStringRef(CharType (&str)[N]) /* = delete */; // NOLINT, implicit
-};
-
-//! 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
-
-///////////////////////////////////////////////////////////////////////////////
-// 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.
-
- //!@name Constructors and destructor.
- //@{
-
- //! Default constructor creates a null value.
- GenericValue() RAPIDJSON_NOEXCEPT : data_(), flags_(kNullFlag) {}
-
-#if RAPIDJSON_HAS_CXX11_RVALUE_REFS
- //! Move constructor in C++11
- GenericValue(GenericValue&& rhs) RAPIDJSON_NOEXCEPT : data_(rhs.data_), flags_(rhs.flags_) {
- rhs.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>
- explicit 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_(), flags_() {
- static const unsigned defaultFlags[7] = {
- kNullFlag, kFalseFlag, kTrueFlag, kObjectFlag, kArrayFlag, kShortStringFlag,
- kNumberAnyFlag
- };
- RAPIDJSON_ASSERT(type <= kNumberType);
- 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<T,bool>))) RAPIDJSON_NOEXCEPT
-#else
- explicit GenericValue(bool b) RAPIDJSON_NOEXCEPT
-#endif
- : data_(), flags_(b ? kTrueFlag : kFalseFlag) {
- // safe-guard against failing SFINAE
- RAPIDJSON_STATIC_ASSERT((internal::IsSame<bool,T>::Value));
- }
-
- //! Constructor for int value.
- explicit GenericValue(int i) RAPIDJSON_NOEXCEPT : data_(), flags_(kNumberIntFlag) {
- data_.n.i64 = i;
- if (i >= 0)
- flags_ |= kUintFlag | kUint64Flag;
- }
-
- //! Constructor for unsigned value.
- explicit GenericValue(unsigned u) RAPIDJSON_NOEXCEPT : data_(), flags_(kNumberUintFlag) {
- data_.n.u64 = u;
- if (!(u & 0x80000000))
- flags_ |= kIntFlag | kInt64Flag;
- }
-
- //! Constructor for int64_t value.
- explicit GenericValue(int64_t i64) RAPIDJSON_NOEXCEPT : data_(), flags_(kNumberInt64Flag) {
- data_.n.i64 = i64;
- if (i64 >= 0) {
- flags_ |= kNumberUint64Flag;
- if (!(static_cast<uint64_t>(i64) & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x00000000)))
- flags_ |= kUintFlag;
- if (!(static_cast<uint64_t>(i64) & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000)))
- flags_ |= kIntFlag;
- }
- else if (i64 >= static_cast<int64_t>(RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000)))
- flags_ |= kIntFlag;
- }
-
- //! Constructor for uint64_t value.
- explicit GenericValue(uint64_t u64) RAPIDJSON_NOEXCEPT : data_(), flags_(kNumberUint64Flag) {
- data_.n.u64 = u64;
- if (!(u64 & RAPIDJSON_UINT64_C2(0x80000000, 0x00000000)))
- flags_ |= kInt64Flag;
- if (!(u64 & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x00000000)))
- flags_ |= kUintFlag;
- if (!(u64 & RAPIDJSON_UINT64_C2(0xFFFFFFFF, 0x80000000)))
- flags_ |= kIntFlag;
- }
-
- //! Constructor for double value.
- explicit GenericValue(double d) RAPIDJSON_NOEXCEPT : data_(), flags_(kNumberDoubleFlag) { data_.n.d = d; }
-
- //! Constructor for constant string (i.e. do not make a copy of string)
- GenericValue(const Ch* s, SizeType length) RAPIDJSON_NOEXCEPT : data_(), flags_() { SetStringRaw(StringRef(s, length)); }
-
- //! Constructor for constant string (i.e. do not make a copy of string)
- explicit GenericValue(StringRefType s) RAPIDJSON_NOEXCEPT : data_(), flags_() { SetStringRaw(s); }
-
- //! Constructor for copy-string (i.e. do make a copy of string)
- GenericValue(const Ch* s, SizeType length, Allocator& allocator) : data_(), flags_() { SetStringRaw(StringRef(s, length), allocator); }
-
- //! Constructor for copy-string (i.e. do make a copy of string)
- GenericValue(const Ch*s, Allocator& allocator) : data_(), flags_() { 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_(), flags_() { SetStringRaw(StringRef(s), allocator); }
-#endif
-
- //! Destructor.
- /*! Need to destruct elements of array, members of object, or copy-string.
- */
- ~GenericValue() {
- if (Allocator::kNeedFree) { // Shortcut by Allocator's trait
- switch(flags_) {
- case kArrayFlag:
- for (GenericValue* v = data_.a.elements; v != data_.a.elements + data_.a.size; ++v)
- v->~GenericValue();
- Allocator::Free(data_.a.elements);
- break;
-
- case kObjectFlag:
- for (MemberIterator m = MemberBegin(); m != MemberEnd(); ++m)
- m->~Member();
- Allocator::Free(data_.o.members);
- break;
-
- case kCopyStringFlag:
- Allocator::Free(const_cast<Ch*>(data_.s.str));
- 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((void*)this != (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: // kTrueType, kFalseType, kNullType
- 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>(flags_ & kTypeMask); }
- bool IsNull() const { return flags_ == kNullFlag; }
- bool IsFalse() const { return flags_ == kFalseFlag; }
- bool IsTrue() const { return flags_ == kTrueFlag; }
- bool IsBool() const { return (flags_ & kBoolFlag) != 0; }
- bool IsObject() const { return flags_ == kObjectFlag; }
- bool IsArray() const { return flags_ == kArrayFlag; }
- bool IsNumber() const { return (flags_ & kNumberFlag) != 0; }
- bool IsInt() const { return (flags_ & kIntFlag) != 0; }
- bool IsUint() const { return (flags_ & kUintFlag) != 0; }
- bool IsInt64() const { return (flags_ & kInt64Flag) != 0; }
- bool IsUint64() const { return (flags_ & kUint64Flag) != 0; }
- bool IsDouble() const { return (flags_ & kDoubleFlag) != 0; }
- bool IsString() const { return (flags_ & kStringFlag) != 0; }
-
- //@}
-
- //!@name Null
- //@{
-
- GenericValue& SetNull() { this->~GenericValue(); new (this) GenericValue(); return *this; }
-
- //@}
-
- //!@name Bool
- //@{
-
- bool GetBool() const { RAPIDJSON_ASSERT(IsBool()); return 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
- static GenericValue NullValue;
- return NullValue;
- }
- }
- 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(data_.o.members); }
- //! Const \em past-the-end member iterator
- /*! \pre IsObject() == true */
- ConstMemberIterator MemberEnd() const { RAPIDJSON_ASSERT(IsObject()); return ConstMemberIterator(data_.o.members + data_.o.size); }
- //! Member iterator
- /*! \pre IsObject() == true */
- MemberIterator MemberBegin() { RAPIDJSON_ASSERT(IsObject()); return MemberIterator(data_.o.members); }
- //! \em Past-the-end member iterator
- /*! \pre IsObject() == true */
- MemberIterator MemberEnd() { RAPIDJSON_ASSERT(IsObject()); return MemberIterator(data_.o.members + 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(StringRef(name)); }
- ConstMemberIterator FindMember(const std::basic_string<Ch>& name) const { return FindMember(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());
-
- Object& o = data_.o;
- if (o.size >= o.capacity) {
- if (o.capacity == 0) {
- o.capacity = kDefaultObjectCapacity;
- o.members = reinterpret_cast<Member*>(allocator.Malloc(o.capacity * sizeof(Member)));
- }
- else {
- SizeType oldCapacity = o.capacity;
- o.capacity += (oldCapacity + 1) / 2; // grow by factor 1.5
- o.members = reinterpret_cast<Member*>(allocator.Realloc(o.members, oldCapacity * sizeof(Member), o.capacity * sizeof(Member)));
- }
- }
- o.members[o.size].name.RawAssign(name);
- o.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(data_.o.members != 0);
- RAPIDJSON_ASSERT(m >= MemberBegin() && m < MemberEnd());
-
- MemberIterator last(data_.o.members + (data_.o.size - 1));
- if (data_.o.size > 1 && m != last) {
- // Move the last one to this place
- *m = *last;
- }
- else {
- // Only one left, just destroy
- m->~Member();
- }
- --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(data_.o.members != 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, (MemberEnd() - last) * sizeof(Member));
- data_.o.size -= (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;
- }
-
- //@}
-
- //!@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());
- for (SizeType i = 0; i < data_.a.size; ++i)
- data_.a.elements[i].~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 data_.a.elements[index];
- }
- const GenericValue& operator[](SizeType index) const { return const_cast<GenericValue&>(*this)[index]; }
-
- //! Element iterator
- /*! \pre IsArray() == true */
- ValueIterator Begin() { RAPIDJSON_ASSERT(IsArray()); return data_.a.elements; }
- //! \em Past-the-end element iterator
- /*! \pre IsArray() == true */
- ValueIterator End() { RAPIDJSON_ASSERT(IsArray()); return data_.a.elements + 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) {
- data_.a.elements = (GenericValue*)allocator.Realloc(data_.a.elements, 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);
- data_.a.elements[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());
- data_.a.elements[--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(data_.a.elements != 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, (End() - last) * sizeof(GenericValue));
- data_.a.size -= (last - first);
- return pos;
- }
-
- //@}
-
- //!@name Number
- //@{
-
- int GetInt() const { RAPIDJSON_ASSERT(flags_ & kIntFlag); return data_.n.i.i; }
- unsigned GetUint() const { RAPIDJSON_ASSERT(flags_ & kUintFlag); return data_.n.u.u; }
- int64_t GetInt64() const { RAPIDJSON_ASSERT(flags_ & kInt64Flag); return data_.n.i64; }
- uint64_t GetUint64() const { RAPIDJSON_ASSERT(flags_ & kUint64Flag); return data_.n.u64; }
-
- double GetDouble() const {
- RAPIDJSON_ASSERT(IsNumber());
- if ((flags_ & kDoubleFlag) != 0) return data_.n.d; // exact type, no conversion.
- if ((flags_ & kIntFlag) != 0) return data_.n.i.i; // int -> double
- if ((flags_ & kUintFlag) != 0) return data_.n.u.u; // unsigned -> double
- if ((flags_ & kInt64Flag) != 0) return (double)data_.n.i64; // int64_t -> double (may lose precision)
- RAPIDJSON_ASSERT((flags_ & kUint64Flag) != 0); return (double)data_.n.u64; // uint64_t -> double (may lose precision)
- }
-
- 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; }
-
- //@}
-
- //!@name String
- //@{
-
- const Ch* GetString() const { RAPIDJSON_ASSERT(IsString()); return ((flags_ & kInlineStrFlag) ? data_.ss.str : data_.s.str); }
-
- //! 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 ((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
-
- //@}
-
- //! 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 (!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 (!handler.Key(m->name.GetString(), m->name.GetStringLength(), (m->name.flags_ & kCopyFlag) != 0))
- return false;
- if (!m->value.Accept(handler))
- return false;
- }
- return handler.EndObject(data_.o.size);
-
- case kArrayType:
- if (!handler.StartArray())
- return false;
- for (GenericValue* v = data_.a.elements; v != data_.a.elements + data_.a.size; ++v)
- if (!v->Accept(handler))
- return false;
- return handler.EndArray(data_.a.size);
-
- case kStringType:
- return handler.String(GetString(), GetStringLength(), (flags_ & kCopyFlag) != 0);
-
- default:
- RAPIDJSON_ASSERT(GetType() == kNumberType);
- 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 if (IsUint64()) return handler.Uint64(data_.n.u64);
- else return handler.Double(data_.n.d);
- }
- }
-
-private:
- template <typename, typename> friend class GenericValue;
- template <typename, typename, typename> friend class GenericDocument;
-
- enum {
- kBoolFlag = 0x100,
- kNumberFlag = 0x200,
- kIntFlag = 0x400,
- kUintFlag = 0x800,
- kInt64Flag = 0x1000,
- kUint64Flag = 0x2000,
- kDoubleFlag = 0x4000,
- kStringFlag = 0x100000,
- kCopyFlag = 0x200000,
- kInlineStrFlag = 0x400000,
-
- // 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 = 0xFF // bitwise-and with mask of 0xFF can be optimized by compiler
- };
-
- static const SizeType kDefaultArrayCapacity = 16;
- static const SizeType kDefaultObjectCapacity = 16;
-
- struct String {
- const Ch* str;
- SizeType length;
- unsigned hashcode; //!< reserved
- }; // 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 11-chars strings in 32-bit mode and 15-chars strings in 64-bit mode
- // inline (for `UTF8`-encoded strings).
- struct ShortString {
- enum { MaxChars = sizeof(String) / 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] = (Ch)(MaxSize - len); }
- inline SizeType GetLength() const { return (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 Object {
- Member* members;
- SizeType size;
- SizeType capacity;
- }; // 12 bytes in 32-bit mode, 16 bytes in 64-bit mode
-
- struct Array {
- GenericValue* elements;
- SizeType size;
- SizeType capacity;
- }; // 12 bytes in 32-bit mode, 16 bytes in 64-bit mode
-
- union Data {
- String s;
- ShortString ss;
- Number n;
- Object o;
- Array a;
- }; // 12 bytes in 32-bit mode, 16 bytes in 64-bit mode
-
- // Initialize this value as array with initial data, without calling destructor.
- void SetArrayRaw(GenericValue* values, SizeType count, Allocator& allocator) {
- flags_ = kArrayFlag;
- if (count) {
- data_.a.elements = (GenericValue*)allocator.Malloc(count * sizeof(GenericValue));
- std::memcpy(data_.a.elements, values, count * sizeof(GenericValue));
- }
- else
- data_.a.elements = NULL;
- 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) {
- flags_ = kObjectFlag;
- if (count) {
- data_.o.members = (Member*)allocator.Malloc(count * sizeof(Member));
- std::memcpy(data_.o.members, members, count * sizeof(Member));
- }
- else
- data_.o.members = NULL;
- data_.o.size = data_.o.capacity = count;
- }
-
- //! Initialize this value as constant string, without calling destructor.
- void SetStringRaw(StringRefType s) RAPIDJSON_NOEXCEPT {
- flags_ = kConstStringFlag;
- data_.s.str = 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 = NULL;
- if(ShortString::Usable(s.length)) {
- flags_ = kShortStringFlag;
- data_.ss.SetLength(s.length);
- str = data_.ss.str;
- } else {
- flags_ = kCopyStringFlag;
- data_.s.length = s.length;
- str = (Ch *)allocator.Malloc((s.length + 1) * sizeof(Ch));
- data_.s.str = 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_;
- flags_ = rhs.flags_;
- rhs.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_;
- unsigned flags_;
-};
-
-//! 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.
- */
- explicit 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 other 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); }
-
- //!@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) {
- ValueType::SetNull(); // Remove existing root if exist
- 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
- this->RawAssign(*stack_.template Pop<ValueType>(1)); // Add this-> to prevent issue 13.
- }
- 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 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);
- }
- //!@}
-
- //!@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(); }
-
- //!@}
-
- //! 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
-
- // 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 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, (SizeType)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.flags_ == kConstStringFlag) {
- flags_ = rhs.flags_;
- data_ = *reinterpret_cast<const Data*>(&rhs.data_);
- } else {
- SetStringRaw(StringRef(rhs.GetString(), rhs.GetStringLength()), allocator);
- }
- break;
- default: // kNumberType, kTrueType, kFalseType, kNullType
- flags_ = rhs.flags_;
- data_ = *reinterpret_cast<const Data*>(&rhs.data_);
- }
-}
-
-RAPIDJSON_NAMESPACE_END
-
-#if defined(_MSC_VER) || defined(__GNUC__)
-RAPIDJSON_DIAG_POP
-#endif
-
-#endif // RAPIDJSON_DOCUMENT_H_
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