diff --git a/backends/twitter/rapidjson/document.h b/backends/twitter/rapidjson/document.h deleted file mode 100644 index 83d95a33d08a674e6e9f3215a5b66e824ba9e8bf..0000000000000000000000000000000000000000 --- a/backends/twitter/rapidjson/document.h +++ /dev/null @@ -1,821 +0,0 @@ -#ifndef RAPIDJSON_DOCUMENT_H_ -#define RAPIDJSON_DOCUMENT_H_ - -#include "reader.h" -#include "internal/strfunc.h" -#include // placement new - -#ifdef _MSC_VER -#pragma warning(push) -#pragma warning(disable : 4127) // conditional expression is constant -#endif - -namespace rapidjson { - -/////////////////////////////////////////////////////////////////////////////// -// 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. -*/ -#pragma pack (push, 4) -template > -class GenericValue { -public: - //! Name-value pair in an object. - struct Member { - GenericValue name; //!< name of member (must be a string) - GenericValue value; //!< value of 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 Member* MemberIterator; //!< Member iterator for iterating in object. - typedef const Member* 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. - - //!@name Constructors and destructor. - //@{ - - //! Default constructor creates a null value. - GenericValue() : flags_(kNullFlag) {} - - //! Copy constructor is not permitted. -private: - GenericValue(const GenericValue& rhs); - -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. - */ - GenericValue(Type type) { - static const unsigned defaultFlags[7] = { - kNullFlag, kFalseFlag, kTrueFlag, kObjectFlag, kArrayFlag, kConstStringFlag, - kNumberFlag | kIntFlag | kUintFlag | kInt64Flag | kUint64Flag | kDoubleFlag - }; - RAPIDJSON_ASSERT(type <= kNumberType); - flags_ = defaultFlags[type]; - memset(&data_, 0, sizeof(data_)); - } - - //! Constructor for boolean value. - GenericValue(bool b) : flags_(b ? kTrueFlag : kFalseFlag) {} - - //! Constructor for int value. - GenericValue(int i) : flags_(kNumberIntFlag) { - data_.n.i64 = i; - if (i >= 0) - flags_ |= kUintFlag | kUint64Flag; - } - - //! Constructor for unsigned value. - GenericValue(unsigned u) : flags_(kNumberUintFlag) { - data_.n.u64 = u; - if (!(u & 0x80000000)) - flags_ |= kIntFlag | kInt64Flag; - } - - //! Constructor for int64_t value. - GenericValue(int64_t i64) : flags_(kNumberInt64Flag) { - data_.n.i64 = i64; - if (i64 >= 0) { - flags_ |= kNumberUint64Flag; - if (!(i64 & 0xFFFFFFFF00000000LL)) - flags_ |= kUintFlag; - if (!(i64 & 0xFFFFFFFF80000000LL)) - flags_ |= kIntFlag; - } - else if (i64 >= -2147483648LL) - flags_ |= kIntFlag; - } - - //! Constructor for uint64_t value. - GenericValue(uint64_t u64) : flags_(kNumberUint64Flag) { - data_.n.u64 = u64; - if (!(u64 & 0x8000000000000000ULL)) - flags_ |= kInt64Flag; - if (!(u64 & 0xFFFFFFFF00000000ULL)) - flags_ |= kUintFlag; - if (!(u64 & 0xFFFFFFFF80000000ULL)) - flags_ |= kIntFlag; - } - - //! Constructor for double value. - GenericValue(double d) : 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_ASSERT(s != NULL); - flags_ = kConstStringFlag; - data_.s.str = s; - data_.s.length = length; - } - - //! Constructor for constant string (i.e. do not make a copy of string) - GenericValue(const Ch* s) { SetStringRaw(s, internal::StrLen(s)); } - - //! Constructor for copy-string (i.e. do make a copy of string) - GenericValue(const Ch* s, SizeType length, Allocator& allocator) { SetStringRaw(s, length, allocator); } - - //! Constructor for copy-string (i.e. do make a copy of string) - GenericValue(const Ch*s, Allocator& allocator) { SetStringRaw(s, internal::StrLen(s), allocator); } - - //! 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 (Member* m = data_.o.members; m != data_.o.members + data_.o.size; ++m) { - m->name.~GenericValue(); - m->value.~GenericValue(); - } - Allocator::Free(data_.o.members); - break; - - case kCopyStringFlag: - Allocator::Free(const_cast(data_.s.str)); - break; - } - } - } - - //@} - - //!@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_ASSERT(this != &rhs); - this->~GenericValue(); - memcpy(this, &rhs, sizeof(GenericValue)); - rhs.flags_ = kNullFlag; - return *this; - } - - //! Assignment with primitive types. - /*! \tparam T Either Type, int, unsigned, int64_t, uint64_t, const Ch* - \param value The value to be assigned. - */ - template - GenericValue& operator=(T value) { - this->~GenericValue(); - new (this) GenericValue(value); - return *this; - } - //@} - - //!@name Type - //@{ - - Type GetType() const { return static_cast(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; } - GenericValue& SetBool(bool b) { this->~GenericValue(); new (this) GenericValue(b); return *this; } - - //@} - - //!@name Object - //@{ - - //! Set this value as an empty object. - GenericValue& SetObject() { this->~GenericValue(); new (this) GenericValue(kObjectType); return *this; } - - //! Get the value associated with the object's name. - GenericValue& operator[](const Ch* name) { - if (Member* member = FindMember(name)) - return member->value; - else { - static GenericValue NullValue; - return NullValue; - } - } - const GenericValue& operator[](const Ch* name) const { return const_cast(*this)[name]; } - - //! Member iterators. - ConstMemberIterator MemberBegin() const { RAPIDJSON_ASSERT(IsObject()); return data_.o.members; } - ConstMemberIterator MemberEnd() const { RAPIDJSON_ASSERT(IsObject()); return data_.o.members + data_.o.size; } - MemberIterator MemberBegin() { RAPIDJSON_ASSERT(IsObject()); return data_.o.members; } - MemberIterator MemberEnd() { RAPIDJSON_ASSERT(IsObject()); return data_.o.members + data_.o.size; } - - //! Check whether a member exists in the object. - bool HasMember(const Ch* name) const { return FindMember(name) != 0; } - - //! 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. - \return The value itself for fluent API. - \note The ownership of name and value will be transfered to this object if success. - */ - 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 = (Member*)allocator.Malloc(o.capacity * sizeof(Member)); - } - else { - SizeType oldCapacity = o.capacity; - o.capacity *= 2; - o.members = (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; - } - - GenericValue& AddMember(const Ch* name, Allocator& nameAllocator, GenericValue& value, Allocator& allocator) { - GenericValue n(name, internal::StrLen(name), nameAllocator); - return AddMember(n, value, allocator); - } - - GenericValue& AddMember(const Ch* name, GenericValue& value, Allocator& allocator) { - GenericValue n(name, internal::StrLen(name)); - return AddMember(n, value, allocator); - } - - template - GenericValue& AddMember(const Ch* name, T value, Allocator& allocator) { - GenericValue n(name, internal::StrLen(name)); - GenericValue v(value); - return AddMember(n, v, allocator); - } - - //! Remove a member in object by its name. - /*! \param name Name of member to be removed. - \return Whether the member existed. - \note Removing member is implemented by moving the last member. So the ordering of members is changed. - */ - bool RemoveMember(const Ch* name) { - RAPIDJSON_ASSERT(IsObject()); - if (Member* m = FindMember(name)) { - RAPIDJSON_ASSERT(data_.o.size > 0); - RAPIDJSON_ASSERT(data_.o.members != 0); - - Member* last = data_.o.members + (data_.o.size - 1); - if (data_.o.size > 1 && m != last) { - // Move the last one to this place - m->name = last->name; - m->value = last->value; - } - else { - // Only one left, just destroy - m->name.~GenericValue(); - m->value.~GenericValue(); - } - --data_.o.size; - return true; - } - return false; - } - - //@} - - //!@name Array - //@{ - - //! Set this value as an empty array. - 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. - */ - 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. - /*! \param index Zero-based index of element. - \note -\code -Value a(kArrayType); -a.PushBack(123); -int x = a[0].GetInt(); // Error: operator[ is ambiguous, as 0 also mean a null pointer of const char* type. -int y = a[SizeType(0)].GetInt(); // Cast to SizeType will work. -int z = a[0u].GetInt(); // This works too. -\endcode - */ - 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(*this)[index]; } - - //! Element iterator - ValueIterator Begin() { RAPIDJSON_ASSERT(IsArray()); return data_.a.elements; } - ValueIterator End() { RAPIDJSON_ASSERT(IsArray()); return data_.a.elements + data_.a.size; } - ConstValueIterator Begin() const { return const_cast(*this).Begin(); } - ConstValueIterator End() const { return const_cast(*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 The allocator for allocating memory. It must be the same one use previously. - \return The value itself for fluent API. - */ - 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 value at the end of the array. - /*! \param value The value to be appended. - \param allocator The allocator for allocating memory. It must be the same one use previously. - \return The value itself for fluent API. - \note The ownership of the value will be transfered to this object if success. - \note If the number of elements to be appended is known, calls Reserve() once first may be more efficient. - */ - 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 * 2, allocator); - data_.a.elements[data_.a.size++].RawAssign(value); - return *this; - } - - template - GenericValue& PushBack(T value, Allocator& allocator) { - GenericValue v(value); - return PushBack(v, allocator); - } - - //! Remove the last element in the array. - GenericValue& PopBack() { - RAPIDJSON_ASSERT(IsArray()); - RAPIDJSON_ASSERT(!Empty()); - data_.a.elements[--data_.a.size].~GenericValue(); - return *this; - } - //@} - - //!@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 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 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. - */ - GenericValue& SetString(const Ch* s, SizeType length) { this->~GenericValue(); SetStringRaw(s, length); return *this; } - - //! Set this value as a string without copying source string. - /*! \param s source string pointer. - \return The value itself for fluent API. - */ - GenericValue& SetString(const Ch* s) { return SetString(s, internal::StrLen(s)); } - - //! 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 document.GetAllocator(). - \return The value itself for fluent API. - */ - GenericValue& SetString(const Ch* s, SizeType length, Allocator& allocator) { this->~GenericValue(); SetStringRaw(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 document.GetAllocator(). - \return The value itself for fluent API. - */ - GenericValue& SetString(const Ch* s, Allocator& allocator) { SetString(s, internal::StrLen(s), allocator); return *this; } - - //@} - - //! 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 - const GenericValue& Accept(Handler& handler) const { - switch(GetType()) { - case kNullType: handler.Null(); break; - case kFalseType: handler.Bool(false); break; - case kTrueType: handler.Bool(true); break; - - case kObjectType: - handler.StartObject(); - for (Member* m = data_.o.members; m != data_.o.members + data_.o.size; ++m) { - handler.String(m->name.data_.s.str, m->name.data_.s.length, false); - m->value.Accept(handler); - } - handler.EndObject(data_.o.size); - break; - - case kArrayType: - handler.StartArray(); - for (GenericValue* v = data_.a.elements; v != data_.a.elements + data_.a.size; ++v) - v->Accept(handler); - handler.EndArray(data_.a.size); - break; - - case kStringType: - handler.String(data_.s.str, data_.s.length, false); - break; - - case kNumberType: - if (IsInt()) handler.Int(data_.n.i.i); - else if (IsUint()) handler.Uint(data_.n.u.u); - else if (IsInt64()) handler.Int64(data_.n.i64); - else if (IsUint64()) handler.Uint64(data_.n.u64); - else handler.Double(data_.n.d); - break; - } - return *this; - } - -private: - template - friend class GenericDocument; - - enum { - kBoolFlag = 0x100, - kNumberFlag = 0x200, - kIntFlag = 0x400, - kUintFlag = 0x800, - kInt64Flag = 0x1000, - kUint64Flag = 0x2000, - kDoubleFlag = 0x4000, - kStringFlag = 0x100000, - kCopyFlag = 0x200000, - - // 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, - kConstStringFlag = kStringType | kStringFlag, - kCopyStringFlag = kStringType | kStringFlag | kCopyFlag, - 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 - - // 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; - Number n; - Object o; - Array a; - }; // 12 bytes in 32-bit mode, 16 bytes in 64-bit mode - - //! Find member by name. - Member* FindMember(const Ch* name) { - RAPIDJSON_ASSERT(name); - RAPIDJSON_ASSERT(IsObject()); - - SizeType length = internal::StrLen(name); - - Object& o = data_.o; - for (Member* member = o.members; member != data_.o.members + data_.o.size; ++member) - if (length == member->name.data_.s.length && memcmp(member->name.data_.s.str, name, length * sizeof(Ch)) == 0) - return member; - - return 0; - } - const Member* FindMember(const Ch* name) const { return const_cast(*this).FindMember(name); } - - // Initialize this value as array with initial data, without calling destructor. - void SetArrayRaw(GenericValue* values, SizeType count, Allocator& alloctaor) { - flags_ = kArrayFlag; - data_.a.elements = (GenericValue*)alloctaor.Malloc(count * sizeof(GenericValue)); - memcpy(data_.a.elements, values, count * sizeof(GenericValue)); - 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& alloctaor) { - flags_ = kObjectFlag; - data_.o.members = (Member*)alloctaor.Malloc(count * sizeof(Member)); - memcpy(data_.o.members, members, count * sizeof(Member)); - data_.o.size = data_.o.capacity = count; - } - - //! Initialize this value as constant string, without calling destructor. - void SetStringRaw(const Ch* s, SizeType length) { - RAPIDJSON_ASSERT(s != NULL); - flags_ = kConstStringFlag; - data_.s.str = s; - data_.s.length = length; - } - - //! Initialize this value as copy string with initial data, without calling destructor. - void SetStringRaw(const Ch* s, SizeType length, Allocator& allocator) { - RAPIDJSON_ASSERT(s != NULL); - flags_ = kCopyStringFlag; - data_.s.str = (Ch *)allocator.Malloc((length + 1) * sizeof(Ch)); - data_.s.length = length; - memcpy(const_cast(data_.s.str), s, length * sizeof(Ch)); - const_cast(data_.s.str)[length] = '\0'; - } - - //! Assignment without calling destructor - void RawAssign(GenericValue& rhs) { - memcpy(this, &rhs, sizeof(GenericValue)); - rhs.flags_ = kNullFlag; - } - - Data data_; - unsigned flags_; -}; -#pragma pack (pop) - -//! Value with UTF8 encoding. -typedef GenericValue > Value; - -/////////////////////////////////////////////////////////////////////////////// -// GenericDocument - -//! A document for parsing JSON text as DOM. -/*! - \implements Handler - \tparam Encoding encoding for both parsing and string storage. - \tparam Alloactor allocator for allocating memory for the DOM, and the stack during parsing. -*/ -template > -class GenericDocument : public GenericValue { -public: - typedef typename Encoding::Ch Ch; //!< Character type derived from Encoding. - typedef GenericValue ValueType; //!< Value type of the document. - typedef Allocator AllocatorType; //!< Allocator type from template parameter. - - //! Constructor - /*! \param allocator Optional allocator for allocating stack memory. - \param stackCapacity Initial capacity of stack in bytes. - */ - GenericDocument(Allocator* allocator = 0, size_t stackCapacity = kDefaultStackCapacity) : stack_(allocator, stackCapacity), parseError_(0), errorOffset_(0) {} - - //! Parse JSON text from an input stream. - /*! \tparam parseFlags Combination of ParseFlag. - \param stream Input stream to be parsed. - \return The document itself for fluent API. - */ - template - GenericDocument& ParseStream(Stream& stream) { - ValueType::SetNull(); // Remove existing root if exist - GenericReader reader; - if (reader.template Parse(stream, *this)) { - RAPIDJSON_ASSERT(stack_.GetSize() == sizeof(ValueType)); // Got one and only one root object - this->RawAssign(*stack_.template Pop(1)); // Add this-> to prevent issue 13. - parseError_ = 0; - errorOffset_ = 0; - } - else { - parseError_ = reader.GetParseError(); - errorOffset_ = reader.GetErrorOffset(); - ClearStack(); - } - return *this; - } - - //! Parse JSON text from a mutable string. - /*! \tparam parseFlags Combination of ParseFlag. - \param str Mutable zero-terminated string to be parsed. - \return The document itself for fluent API. - */ - template - GenericDocument& ParseInsitu(Ch* str) { - GenericInsituStringStream s(str); - return ParseStream(s); - } - - //! Parse JSON text from a read-only string. - /*! \tparam parseFlags Combination of ParseFlag (must not contain kParseInsituFlag). - \param str Read-only zero-terminated string to be parsed. - */ - template - GenericDocument& Parse(const Ch* str) { - RAPIDJSON_ASSERT(!(parseFlags & kParseInsituFlag)); - GenericStringStream s(str); - return ParseStream(s); - } - - //! Whether a parse error was occured in the last parsing. - bool HasParseError() const { return parseError_ != 0; } - - //! Get the message of parsing error. - const char* GetParseError() const { return parseError_; } - - //! Get the offset in character of the parsing error. - size_t GetErrorOffset() const { return errorOffset_; } - - //! Get the allocator of this document. - Allocator& GetAllocator() { return stack_.GetAllocator(); } - - //! Get the capacity of stack in bytes. - size_t GetStackCapacity() const { return stack_.GetCapacity(); } - -private: - // Prohibit assignment - GenericDocument& operator=(const GenericDocument&); - - friend class GenericReader; // for Reader to call the following private handler functions - - // Implementation of Handler - void Null() { new (stack_.template Push()) ValueType(); } - void Bool(bool b) { new (stack_.template Push()) ValueType(b); } - void Int(int i) { new (stack_.template Push()) ValueType(i); } - void Uint(unsigned i) { new (stack_.template Push()) ValueType(i); } - void Int64(int64_t i) { new (stack_.template Push()) ValueType(i); } - void Uint64(uint64_t i) { new (stack_.template Push()) ValueType(i); } - void Double(double d) { new (stack_.template Push()) ValueType(d); } - - void String(const Ch* str, SizeType length, bool copy) { - if (copy) - new (stack_.template Push()) ValueType(str, length, GetAllocator()); - else - new (stack_.template Push()) ValueType(str, length); - } - - void StartObject() { new (stack_.template Push()) ValueType(kObjectType); } - - void EndObject(SizeType memberCount) { - typename ValueType::Member* members = stack_.template Pop(memberCount); - stack_.template Top()->SetObjectRaw(members, (SizeType)memberCount, GetAllocator()); - } - - void StartArray() { new (stack_.template Push()) ValueType(kArrayType); } - - void EndArray(SizeType elementCount) { - ValueType* elements = stack_.template Pop(elementCount); - stack_.template Top()->SetArrayRaw(elements, elementCount, GetAllocator()); - } - - 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(1))->~ValueType(); - else - stack_.Clear(); - } - - static const size_t kDefaultStackCapacity = 1024; - internal::Stack stack_; - const char* parseError_; - size_t errorOffset_; -}; - -typedef GenericDocument > Document; - -} // namespace rapidjson - -#ifdef _MSC_VER -#pragma warning(pop) -#endif - -#endif // RAPIDJSON_DOCUMENT_H_