| // 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_POINTER_H_ |
| #define RAPIDJSON_POINTER_H_ |
| |
| #include "document.h" |
| #include "internal/itoa.h" |
| |
| #ifdef __clang__ |
| RAPIDJSON_DIAG_PUSH |
| RAPIDJSON_DIAG_OFF(switch-enum) |
| #elif defined(_MSC_VER) |
| RAPIDJSON_DIAG_PUSH |
| RAPIDJSON_DIAG_OFF(4512) // assignment operator could not be generated |
| #endif |
| |
| RAPIDJSON_NAMESPACE_BEGIN |
| |
| static const SizeType kPointerInvalidIndex = ~SizeType(0); //!< Represents an invalid index in GenericPointer::Token |
| |
| //! Error code of parsing. |
| /*! \ingroup RAPIDJSON_ERRORS |
| \see GenericPointer::GenericPointer, GenericPointer::GetParseErrorCode |
| */ |
| enum PointerParseErrorCode { |
| kPointerParseErrorNone = 0, //!< The parse is successful |
| |
| kPointerParseErrorTokenMustBeginWithSolidus, //!< A token must begin with a '/' |
| kPointerParseErrorInvalidEscape, //!< Invalid escape |
| kPointerParseErrorInvalidPercentEncoding, //!< Invalid percent encoding in URI fragment |
| kPointerParseErrorCharacterMustPercentEncode //!< A character must percent encoded in URI fragment |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // GenericPointer |
| |
| //! Represents a JSON Pointer. Use Pointer for UTF8 encoding and default allocator. |
| /*! |
| This class implements RFC 6901 "JavaScript Object Notation (JSON) Pointer" |
| (https://tools.ietf.org/html/rfc6901). |
| |
| A JSON pointer is for identifying a specific value in a JSON document |
| (GenericDocument). It can simplify coding of DOM tree manipulation, because it |
| can access multiple-level depth of DOM tree with single API call. |
| |
| After it parses a string representation (e.g. "/foo/0" or URI fragment |
| representation (e.g. "#/foo/0") into its internal representation (tokens), |
| it can be used to resolve a specific value in multiple documents, or sub-tree |
| of documents. |
| |
| Contrary to GenericValue, Pointer can be copy constructed and copy assigned. |
| Apart from assignment, a Pointer cannot be modified after construction. |
| |
| Although Pointer is very convenient, please aware that constructing Pointer |
| involves parsing and dynamic memory allocation. A special constructor with user- |
| supplied tokens eliminates these. |
| |
| GenericPointer depends on GenericDocument and GenericValue. |
| |
| \tparam ValueType The value type of the DOM tree. E.g. GenericValue<UTF8<> > |
| \tparam Allocator The allocator type for allocating memory for internal representation. |
| |
| \note GenericPointer uses same encoding of ValueType. |
| However, Allocator of GenericPointer is independent of Allocator of Value. |
| */ |
| template <typename ValueType, typename Allocator = CrtAllocator> |
| class GenericPointer { |
| public: |
| typedef typename ValueType::EncodingType EncodingType; //!< Encoding type from Value |
| typedef typename ValueType::Ch Ch; //!< Character type from Value |
| |
| //! A token is the basic units of internal representation. |
| /*! |
| A JSON pointer string representation "/foo/123" is parsed to two tokens: |
| "foo" and 123. 123 will be represented in both numeric form and string form. |
| They are resolved according to the actual value type (object or array). |
| |
| For token that are not numbers, or the numeric value is out of bound |
| (greater than limits of SizeType), they are only treated as string form |
| (i.e. the token's index will be equal to kPointerInvalidIndex). |
| |
| This struct is public so that user can create a Pointer without parsing and |
| allocation, using a special constructor. |
| */ |
| struct Token { |
| const Ch* name; //!< Name of the token. It has null character at the end but it can contain null character. |
| SizeType length; //!< Length of the name. |
| SizeType index; //!< A valid array index, if it is not equal to kPointerInvalidIndex. |
| }; |
| |
| //!@name Constructors and destructor. |
| //@{ |
| |
| //! Default constructor. |
| GenericPointer(Allocator* allocator = 0) : allocator_(allocator), ownAllocator_(), nameBuffer_(), tokens_(), tokenCount_(), parseErrorOffset_(), parseErrorCode_(kPointerParseErrorNone) {} |
| |
| //! Constructor that parses a string or URI fragment representation. |
| /*! |
| \param source A null-terminated, string or URI fragment representation of JSON pointer. |
| \param allocator User supplied allocator for this pointer. If no allocator is provided, it creates a self-owned one. |
| */ |
| explicit GenericPointer(const Ch* source, Allocator* allocator = 0) : allocator_(allocator), ownAllocator_(), nameBuffer_(), tokens_(), tokenCount_(), parseErrorOffset_(), parseErrorCode_(kPointerParseErrorNone) { |
| Parse(source, internal::StrLen(source)); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| //! Constructor that parses a string or URI fragment representation. |
| /*! |
| \param source A string or URI fragment representation of JSON pointer. |
| \param allocator User supplied allocator for this pointer. If no allocator is provided, it creates a self-owned one. |
| \note Requires the definition of the preprocessor symbol \ref RAPIDJSON_HAS_STDSTRING. |
| */ |
| explicit GenericPointer(const std::basic_string<Ch>& source, Allocator* allocator = 0) : allocator_(allocator), ownAllocator_(), nameBuffer_(), tokens_(), tokenCount_(), parseErrorOffset_(), parseErrorCode_(kPointerParseErrorNone) { |
| Parse(source.c_str(), source.size()); |
| } |
| #endif |
| |
| //! Constructor that parses a string or URI fragment representation, with length of the source string. |
| /*! |
| \param source A string or URI fragment representation of JSON pointer. |
| \param length Length of source. |
| \param allocator User supplied allocator for this pointer. If no allocator is provided, it creates a self-owned one. |
| \note Slightly faster than the overload without length. |
| */ |
| GenericPointer(const Ch* source, size_t length, Allocator* allocator = 0) : allocator_(allocator), ownAllocator_(), nameBuffer_(), tokens_(), tokenCount_(), parseErrorOffset_(), parseErrorCode_(kPointerParseErrorNone) { |
| Parse(source, length); |
| } |
| |
| //! Constructor with user-supplied tokens. |
| /*! |
| This constructor let user supplies const array of tokens. |
| This prevents the parsing process and eliminates allocation. |
| This is preferred for memory constrained environments. |
| |
| \param tokens An constant array of tokens representing the JSON pointer. |
| \param tokenCount Number of tokens. |
| |
| \b Example |
| \code |
| #define NAME(s) { s, sizeof(s) / sizeof(s[0]) - 1, kPointerInvalidIndex } |
| #define INDEX(i) { #i, sizeof(#i) - 1, i } |
| |
| static const Pointer::Token kTokens[] = { NAME("foo"), INDEX(123) }; |
| static const Pointer p(kTokens, sizeof(kTokens) / sizeof(kTokens[0])); |
| // Equivalent to static const Pointer p("/foo/123"); |
| |
| #undef NAME |
| #undef INDEX |
| \endcode |
| */ |
| GenericPointer(const Token* tokens, size_t tokenCount) : allocator_(), ownAllocator_(), nameBuffer_(), tokens_(const_cast<Token*>(tokens)), tokenCount_(tokenCount), parseErrorOffset_(), parseErrorCode_(kPointerParseErrorNone) {} |
| |
| //! Copy constructor. |
| GenericPointer(const GenericPointer& rhs) : allocator_(rhs.allocator_), ownAllocator_(), nameBuffer_(), tokens_(), tokenCount_(), parseErrorOffset_(), parseErrorCode_(kPointerParseErrorNone) { |
| *this = rhs; |
| } |
| |
| //! Copy constructor. |
| GenericPointer(const GenericPointer& rhs, Allocator* allocator) : allocator_(allocator), ownAllocator_(), nameBuffer_(), tokens_(), tokenCount_(), parseErrorOffset_(), parseErrorCode_(kPointerParseErrorNone) { |
| *this = rhs; |
| } |
| |
| //! Destructor. |
| ~GenericPointer() { |
| if (nameBuffer_) // If user-supplied tokens constructor is used, nameBuffer_ is nullptr and tokens_ are not deallocated. |
| Allocator::Free(tokens_); |
| RAPIDJSON_DELETE(ownAllocator_); |
| } |
| |
| //! Assignment operator. |
| GenericPointer& operator=(const GenericPointer& rhs) { |
| if (this != &rhs) { |
| // Do not delete ownAllcator |
| if (nameBuffer_) |
| Allocator::Free(tokens_); |
| |
| tokenCount_ = rhs.tokenCount_; |
| parseErrorOffset_ = rhs.parseErrorOffset_; |
| parseErrorCode_ = rhs.parseErrorCode_; |
| |
| if (rhs.nameBuffer_) |
| CopyFromRaw(rhs); // Normally parsed tokens. |
| else { |
| tokens_ = rhs.tokens_; // User supplied const tokens. |
| nameBuffer_ = 0; |
| } |
| } |
| return *this; |
| } |
| |
| //! Swap the content of this pointer with an other. |
| /*! |
| \param other The pointer to swap with. |
| \note Constant complexity. |
| */ |
| GenericPointer& Swap(GenericPointer& other) RAPIDJSON_NOEXCEPT { |
| internal::Swap(allocator_, other.allocator_); |
| internal::Swap(ownAllocator_, other.ownAllocator_); |
| internal::Swap(nameBuffer_, other.nameBuffer_); |
| internal::Swap(tokens_, other.tokens_); |
| internal::Swap(tokenCount_, other.tokenCount_); |
| internal::Swap(parseErrorOffset_, other.parseErrorOffset_); |
| internal::Swap(parseErrorCode_, other.parseErrorCode_); |
| 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.pointer, b.pointer); |
| // ... |
| } |
| \endcode |
| \see Swap() |
| */ |
| friend inline void swap(GenericPointer& a, GenericPointer& b) RAPIDJSON_NOEXCEPT { a.Swap(b); } |
| |
| //@} |
| |
| //!@name Append token |
| //@{ |
| |
| //! Append a token and return a new Pointer |
| /*! |
| \param token Token to be appended. |
| \param allocator Allocator for the newly return Pointer. |
| \return A new Pointer with appended token. |
| */ |
| GenericPointer Append(const Token& token, Allocator* allocator = 0) const { |
| GenericPointer r; |
| r.allocator_ = allocator; |
| Ch *p = r.CopyFromRaw(*this, 1, token.length + 1); |
| std::memcpy(p, token.name, (token.length + 1) * sizeof(Ch)); |
| r.tokens_[tokenCount_].name = p; |
| r.tokens_[tokenCount_].length = token.length; |
| r.tokens_[tokenCount_].index = token.index; |
| return r; |
| } |
| |
| //! Append a name token with length, and return a new Pointer |
| /*! |
| \param name Name to be appended. |
| \param length Length of name. |
| \param allocator Allocator for the newly return Pointer. |
| \return A new Pointer with appended token. |
| */ |
| GenericPointer Append(const Ch* name, SizeType length, Allocator* allocator = 0) const { |
| Token token = { name, length, kPointerInvalidIndex }; |
| return Append(token, allocator); |
| } |
| |
| //! Append a name token without length, and return a new Pointer |
| /*! |
| \param name Name (const Ch*) to be appended. |
| \param allocator Allocator for the newly return Pointer. |
| \return A new Pointer with appended token. |
| */ |
| template <typename T> |
| RAPIDJSON_DISABLEIF_RETURN((internal::NotExpr<internal::IsSame<typename internal::RemoveConst<T>::Type, Ch> >), (GenericPointer)) |
| Append(T* name, Allocator* allocator = 0) const { |
| return Append(name, internal::StrLen(name), allocator); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| //! Append a name token, and return a new Pointer |
| /*! |
| \param name Name to be appended. |
| \param allocator Allocator for the newly return Pointer. |
| \return A new Pointer with appended token. |
| */ |
| GenericPointer Append(const std::basic_string<Ch>& name, Allocator* allocator = 0) const { |
| return Append(name.c_str(), static_cast<SizeType>(name.size()), allocator); |
| } |
| #endif |
| |
| //! Append a index token, and return a new Pointer |
| /*! |
| \param index Index to be appended. |
| \param allocator Allocator for the newly return Pointer. |
| \return A new Pointer with appended token. |
| */ |
| GenericPointer Append(SizeType index, Allocator* allocator = 0) const { |
| char buffer[21]; |
| char* end = sizeof(SizeType) == 4 ? internal::u32toa(index, buffer) : internal::u64toa(index, buffer); |
| SizeType length = static_cast<SizeType>(end - buffer); |
| buffer[length] = '\0'; |
| |
| if (sizeof(Ch) == 1) { |
| Token token = { reinterpret_cast<Ch*>(buffer), length, index }; |
| return Append(token, allocator); |
| } |
| else { |
| Ch name[21]; |
| for (size_t i = 0; i <= length; i++) |
| name[i] = static_cast<Ch>(buffer[i]); |
| Token token = { name, length, index }; |
| return Append(token, allocator); |
| } |
| } |
| |
| //! Append a token by value, and return a new Pointer |
| /*! |
| \param token token to be appended. |
| \param allocator Allocator for the newly return Pointer. |
| \return A new Pointer with appended token. |
| */ |
| GenericPointer Append(const ValueType& token, Allocator* allocator = 0) const { |
| if (token.IsString()) |
| return Append(token.GetString(), token.GetStringLength(), allocator); |
| else { |
| RAPIDJSON_ASSERT(token.IsUint64()); |
| RAPIDJSON_ASSERT(token.GetUint64() <= SizeType(~0)); |
| return Append(static_cast<SizeType>(token.GetUint64()), allocator); |
| } |
| } |
| |
| //!@name Handling Parse Error |
| //@{ |
| |
| //! Check whether this is a valid pointer. |
| bool IsValid() const { return parseErrorCode_ == kPointerParseErrorNone; } |
| |
| //! Get the parsing error offset in code unit. |
| size_t GetParseErrorOffset() const { return parseErrorOffset_; } |
| |
| //! Get the parsing error code. |
| PointerParseErrorCode GetParseErrorCode() const { return parseErrorCode_; } |
| |
| //@} |
| |
| //! Get the allocator of this pointer. |
| Allocator& GetAllocator() { return *allocator_; } |
| |
| //!@name Tokens |
| //@{ |
| |
| //! Get the token array (const version only). |
| const Token* GetTokens() const { return tokens_; } |
| |
| //! Get the number of tokens. |
| size_t GetTokenCount() const { return tokenCount_; } |
| |
| //@} |
| |
| //!@name Equality/inequality operators |
| //@{ |
| |
| //! Equality operator. |
| /*! |
| \note When any pointers are invalid, always returns false. |
| */ |
| bool operator==(const GenericPointer& rhs) const { |
| if (!IsValid() || !rhs.IsValid() || tokenCount_ != rhs.tokenCount_) |
| return false; |
| |
| for (size_t i = 0; i < tokenCount_; i++) { |
| if (tokens_[i].index != rhs.tokens_[i].index || |
| tokens_[i].length != rhs.tokens_[i].length || |
| (tokens_[i].length != 0 && std::memcmp(tokens_[i].name, rhs.tokens_[i].name, sizeof(Ch)* tokens_[i].length) != 0)) |
| { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| //! Inequality operator. |
| /*! |
| \note When any pointers are invalid, always returns true. |
| */ |
| bool operator!=(const GenericPointer& rhs) const { return !(*this == rhs); } |
| |
| //! Less than operator. |
| /*! |
| \note Invalid pointers are always greater than valid ones. |
| */ |
| bool operator<(const GenericPointer& rhs) const { |
| if (!IsValid()) |
| return false; |
| if (!rhs.IsValid()) |
| return true; |
| |
| if (tokenCount_ != rhs.tokenCount_) |
| return tokenCount_ < rhs.tokenCount_; |
| |
| for (size_t i = 0; i < tokenCount_; i++) { |
| if (tokens_[i].index != rhs.tokens_[i].index) |
| return tokens_[i].index < rhs.tokens_[i].index; |
| |
| if (tokens_[i].length != rhs.tokens_[i].length) |
| return tokens_[i].length < rhs.tokens_[i].length; |
| |
| if (int cmp = std::memcmp(tokens_[i].name, rhs.tokens_[i].name, sizeof(Ch) * tokens_[i].length)) |
| return cmp < 0; |
| } |
| |
| return false; |
| } |
| |
| //@} |
| |
| //!@name Stringify |
| //@{ |
| |
| //! Stringify the pointer into string representation. |
| /*! |
| \tparam OutputStream Type of output stream. |
| \param os The output stream. |
| */ |
| template<typename OutputStream> |
| bool Stringify(OutputStream& os) const { |
| return Stringify<false, OutputStream>(os); |
| } |
| |
| //! Stringify the pointer into URI fragment representation. |
| /*! |
| \tparam OutputStream Type of output stream. |
| \param os The output stream. |
| */ |
| template<typename OutputStream> |
| bool StringifyUriFragment(OutputStream& os) const { |
| return Stringify<true, OutputStream>(os); |
| } |
| |
| //@} |
| |
| //!@name Create value |
| //@{ |
| |
| //! Create a value in a subtree. |
| /*! |
| If the value is not exist, it creates all parent values and a JSON Null value. |
| So it always succeed and return the newly created or existing value. |
| |
| Remind that it may change types of parents according to tokens, so it |
| potentially removes previously stored values. For example, if a document |
| was an array, and "/foo" is used to create a value, then the document |
| will be changed to an object, and all existing array elements are lost. |
| |
| \param root Root value of a DOM subtree to be resolved. It can be any value other than document root. |
| \param allocator Allocator for creating the values if the specified value or its parents are not exist. |
| \param alreadyExist If non-null, it stores whether the resolved value is already exist. |
| \return The resolved newly created (a JSON Null value), or already exists value. |
| */ |
| ValueType& Create(ValueType& root, typename ValueType::AllocatorType& allocator, bool* alreadyExist = 0) const { |
| RAPIDJSON_ASSERT(IsValid()); |
| ValueType* v = &root; |
| bool exist = true; |
| for (const Token *t = tokens_; t != tokens_ + tokenCount_; ++t) { |
| if (v->IsArray() && t->name[0] == '-' && t->length == 1) { |
| v->PushBack(ValueType().Move(), allocator); |
| v = &((*v)[v->Size() - 1]); |
| exist = false; |
| } |
| else { |
| if (t->index == kPointerInvalidIndex) { // must be object name |
| if (!v->IsObject()) |
| v->SetObject(); // Change to Object |
| } |
| else { // object name or array index |
| if (!v->IsArray() && !v->IsObject()) |
| v->SetArray(); // Change to Array |
| } |
| |
| if (v->IsArray()) { |
| if (t->index >= v->Size()) { |
| v->Reserve(t->index + 1, allocator); |
| while (t->index >= v->Size()) |
| v->PushBack(ValueType().Move(), allocator); |
| exist = false; |
| } |
| v = &((*v)[t->index]); |
| } |
| else { |
| typename ValueType::MemberIterator m = v->FindMember(GenericStringRef<Ch>(t->name, t->length)); |
| if (m == v->MemberEnd()) { |
| v->AddMember(ValueType(t->name, t->length, allocator).Move(), ValueType().Move(), allocator); |
| v = &(--v->MemberEnd())->value; // Assumes AddMember() appends at the end |
| exist = false; |
| } |
| else |
| v = &m->value; |
| } |
| } |
| } |
| |
| if (alreadyExist) |
| *alreadyExist = exist; |
| |
| return *v; |
| } |
| |
| //! Creates a value in a document. |
| /*! |
| \param document A document to be resolved. |
| \param alreadyExist If non-null, it stores whether the resolved value is already exist. |
| \return The resolved newly created, or already exists value. |
| */ |
| template <typename stackAllocator> |
| ValueType& Create(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, bool* alreadyExist = 0) const { |
| return Create(document, document.GetAllocator(), alreadyExist); |
| } |
| |
| //@} |
| |
| //!@name Query value |
| //@{ |
| |
| //! Query a value in a subtree. |
| /*! |
| \param root Root value of a DOM sub-tree to be resolved. It can be any value other than document root. |
| \param unresolvedTokenIndex If the pointer cannot resolve a token in the pointer, this parameter can obtain the index of unresolved token. |
| \return Pointer to the value if it can be resolved. Otherwise null. |
| |
| \note |
| There are only 3 situations when a value cannot be resolved: |
| 1. A value in the path is not an array nor object. |
| 2. An object value does not contain the token. |
| 3. A token is out of range of an array value. |
| |
| Use unresolvedTokenIndex to retrieve the token index. |
| */ |
| ValueType* Get(ValueType& root, size_t* unresolvedTokenIndex = 0) const { |
| RAPIDJSON_ASSERT(IsValid()); |
| ValueType* v = &root; |
| for (const Token *t = tokens_; t != tokens_ + tokenCount_; ++t) { |
| switch (v->GetType()) { |
| case kObjectType: |
| { |
| typename ValueType::MemberIterator m = v->FindMember(GenericStringRef<Ch>(t->name, t->length)); |
| if (m == v->MemberEnd()) |
| break; |
| v = &m->value; |
| } |
| continue; |
| case kArrayType: |
| if (t->index == kPointerInvalidIndex || t->index >= v->Size()) |
| break; |
| v = &((*v)[t->index]); |
| continue; |
| default: |
| break; |
| } |
| |
| // Error: unresolved token |
| if (unresolvedTokenIndex) |
| *unresolvedTokenIndex = static_cast<size_t>(t - tokens_); |
| return 0; |
| } |
| return v; |
| } |
| |
| //! Query a const value in a const subtree. |
| /*! |
| \param root Root value of a DOM sub-tree to be resolved. It can be any value other than document root. |
| \return Pointer to the value if it can be resolved. Otherwise null. |
| */ |
| const ValueType* Get(const ValueType& root, size_t* unresolvedTokenIndex = 0) const { |
| return Get(const_cast<ValueType&>(root), unresolvedTokenIndex); |
| } |
| |
| //@} |
| |
| //!@name Query a value with default |
| //@{ |
| |
| //! Query a value in a subtree with default value. |
| /*! |
| Similar to Get(), but if the specified value do not exists, it creates all parents and clone the default value. |
| So that this function always succeed. |
| |
| \param root Root value of a DOM sub-tree to be resolved. It can be any value other than document root. |
| \param defaultValue Default value to be cloned if the value was not exists. |
| \param allocator Allocator for creating the values if the specified value or its parents are not exist. |
| \see Create() |
| */ |
| ValueType& GetWithDefault(ValueType& root, const ValueType& defaultValue, typename ValueType::AllocatorType& allocator) const { |
| bool alreadyExist; |
| ValueType& v = Create(root, allocator, &alreadyExist); |
| return alreadyExist ? v : v.CopyFrom(defaultValue, allocator); |
| } |
| |
| //! Query a value in a subtree with default null-terminated string. |
| ValueType& GetWithDefault(ValueType& root, const Ch* defaultValue, typename ValueType::AllocatorType& allocator) const { |
| bool alreadyExist; |
| ValueType& v = Create(root, allocator, &alreadyExist); |
| return alreadyExist ? v : v.SetString(defaultValue, allocator); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| //! Query a value in a subtree with default std::basic_string. |
| ValueType& GetWithDefault(ValueType& root, const std::basic_string<Ch>& defaultValue, typename ValueType::AllocatorType& allocator) const { |
| bool alreadyExist; |
| ValueType& v = Create(root, allocator, &alreadyExist); |
| return alreadyExist ? v : v.SetString(defaultValue, allocator); |
| } |
| #endif |
| |
| //! Query a value in a subtree with default primitive value. |
| /*! |
| \tparam T Either \ref Type, \c int, \c unsigned, \c int64_t, \c uint64_t, \c bool |
| */ |
| template <typename T> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (ValueType&)) |
| GetWithDefault(ValueType& root, T defaultValue, typename ValueType::AllocatorType& allocator) const { |
| return GetWithDefault(root, ValueType(defaultValue).Move(), allocator); |
| } |
| |
| //! Query a value in a document with default value. |
| template <typename stackAllocator> |
| ValueType& GetWithDefault(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, const ValueType& defaultValue) const { |
| return GetWithDefault(document, defaultValue, document.GetAllocator()); |
| } |
| |
| //! Query a value in a document with default null-terminated string. |
| template <typename stackAllocator> |
| ValueType& GetWithDefault(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, const Ch* defaultValue) const { |
| return GetWithDefault(document, defaultValue, document.GetAllocator()); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| //! Query a value in a document with default std::basic_string. |
| template <typename stackAllocator> |
| ValueType& GetWithDefault(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, const std::basic_string<Ch>& defaultValue) const { |
| return GetWithDefault(document, defaultValue, document.GetAllocator()); |
| } |
| #endif |
| |
| //! Query a value in a document with default primitive value. |
| /*! |
| \tparam T Either \ref Type, \c int, \c unsigned, \c int64_t, \c uint64_t, \c bool |
| */ |
| template <typename T, typename stackAllocator> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (ValueType&)) |
| GetWithDefault(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, T defaultValue) const { |
| return GetWithDefault(document, defaultValue, document.GetAllocator()); |
| } |
| |
| //@} |
| |
| //!@name Set a value |
| //@{ |
| |
| //! Set a value in a subtree, with move semantics. |
| /*! |
| It creates all parents if they are not exist or types are different to the tokens. |
| So this function always succeeds but potentially remove existing values. |
| |
| \param root Root value of a DOM sub-tree to be resolved. It can be any value other than document root. |
| \param value Value to be set. |
| \param allocator Allocator for creating the values if the specified value or its parents are not exist. |
| \see Create() |
| */ |
| ValueType& Set(ValueType& root, ValueType& value, typename ValueType::AllocatorType& allocator) const { |
| return Create(root, allocator) = value; |
| } |
| |
| //! Set a value in a subtree, with copy semantics. |
| ValueType& Set(ValueType& root, const ValueType& value, typename ValueType::AllocatorType& allocator) const { |
| return Create(root, allocator).CopyFrom(value, allocator); |
| } |
| |
| //! Set a null-terminated string in a subtree. |
| ValueType& Set(ValueType& root, const Ch* value, typename ValueType::AllocatorType& allocator) const { |
| return Create(root, allocator) = ValueType(value, allocator).Move(); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| //! Set a std::basic_string in a subtree. |
| ValueType& Set(ValueType& root, const std::basic_string<Ch>& value, typename ValueType::AllocatorType& allocator) const { |
| return Create(root, allocator) = ValueType(value, allocator).Move(); |
| } |
| #endif |
| |
| //! Set a primitive value in a subtree. |
| /*! |
| \tparam T Either \ref Type, \c int, \c unsigned, \c int64_t, \c uint64_t, \c bool |
| */ |
| template <typename T> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (ValueType&)) |
| Set(ValueType& root, T value, typename ValueType::AllocatorType& allocator) const { |
| return Create(root, allocator) = ValueType(value).Move(); |
| } |
| |
| //! Set a value in a document, with move semantics. |
| template <typename stackAllocator> |
| ValueType& Set(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, ValueType& value) const { |
| return Create(document) = value; |
| } |
| |
| //! Set a value in a document, with copy semantics. |
| template <typename stackAllocator> |
| ValueType& Set(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, const ValueType& value) const { |
| return Create(document).CopyFrom(value, document.GetAllocator()); |
| } |
| |
| //! Set a null-terminated string in a document. |
| template <typename stackAllocator> |
| ValueType& Set(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, const Ch* value) const { |
| return Create(document) = ValueType(value, document.GetAllocator()).Move(); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| //! Sets a std::basic_string in a document. |
| template <typename stackAllocator> |
| ValueType& Set(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, const std::basic_string<Ch>& value) const { |
| return Create(document) = ValueType(value, document.GetAllocator()).Move(); |
| } |
| #endif |
| |
| //! Set a primitive value in a document. |
| /*! |
| \tparam T Either \ref Type, \c int, \c unsigned, \c int64_t, \c uint64_t, \c bool |
| */ |
| template <typename T, typename stackAllocator> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T>, internal::IsGenericValue<T> >), (ValueType&)) |
| Set(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, T value) const { |
| return Create(document) = value; |
| } |
| |
| //@} |
| |
| //!@name Swap a value |
| //@{ |
| |
| //! Swap a value with a value in a subtree. |
| /*! |
| It creates all parents if they are not exist or types are different to the tokens. |
| So this function always succeeds but potentially remove existing values. |
| |
| \param root Root value of a DOM sub-tree to be resolved. It can be any value other than document root. |
| \param value Value to be swapped. |
| \param allocator Allocator for creating the values if the specified value or its parents are not exist. |
| \see Create() |
| */ |
| ValueType& Swap(ValueType& root, ValueType& value, typename ValueType::AllocatorType& allocator) const { |
| return Create(root, allocator).Swap(value); |
| } |
| |
| //! Swap a value with a value in a document. |
| template <typename stackAllocator> |
| ValueType& Swap(GenericDocument<EncodingType, typename ValueType::AllocatorType, stackAllocator>& document, ValueType& value) const { |
| return Create(document).Swap(value); |
| } |
| |
| //@} |
| |
| //! Erase a value in a subtree. |
| /*! |
| \param root Root value of a DOM sub-tree to be resolved. It can be any value other than document root. |
| \return Whether the resolved value is found and erased. |
| |
| \note Erasing with an empty pointer \c Pointer(""), i.e. the root, always fail and return false. |
| */ |
| bool Erase(ValueType& root) const { |
| RAPIDJSON_ASSERT(IsValid()); |
| if (tokenCount_ == 0) // Cannot erase the root |
| return false; |
| |
| ValueType* v = &root; |
| const Token* last = tokens_ + (tokenCount_ - 1); |
| for (const Token *t = tokens_; t != last; ++t) { |
| switch (v->GetType()) { |
| case kObjectType: |
| { |
| typename ValueType::MemberIterator m = v->FindMember(GenericStringRef<Ch>(t->name, t->length)); |
| if (m == v->MemberEnd()) |
| return false; |
| v = &m->value; |
| } |
| break; |
| case kArrayType: |
| if (t->index == kPointerInvalidIndex || t->index >= v->Size()) |
| return false; |
| v = &((*v)[t->index]); |
| break; |
| default: |
| return false; |
| } |
| } |
| |
| switch (v->GetType()) { |
| case kObjectType: |
| return v->EraseMember(GenericStringRef<Ch>(last->name, last->length)); |
| case kArrayType: |
| if (last->index == kPointerInvalidIndex || last->index >= v->Size()) |
| return false; |
| v->Erase(v->Begin() + last->index); |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| private: |
| //! Clone the content from rhs to this. |
| /*! |
| \param rhs Source pointer. |
| \param extraToken Extra tokens to be allocated. |
| \param extraNameBufferSize Extra name buffer size (in number of Ch) to be allocated. |
| \return Start of non-occupied name buffer, for storing extra names. |
| */ |
| Ch* CopyFromRaw(const GenericPointer& rhs, size_t extraToken = 0, size_t extraNameBufferSize = 0) { |
| if (!allocator_) // allocator is independently owned. |
| ownAllocator_ = allocator_ = RAPIDJSON_NEW(Allocator)(); |
| |
| size_t nameBufferSize = rhs.tokenCount_; // null terminators for tokens |
| for (Token *t = rhs.tokens_; t != rhs.tokens_ + rhs.tokenCount_; ++t) |
| nameBufferSize += t->length; |
| |
| tokenCount_ = rhs.tokenCount_ + extraToken; |
| tokens_ = static_cast<Token *>(allocator_->Malloc(tokenCount_ * sizeof(Token) + (nameBufferSize + extraNameBufferSize) * sizeof(Ch))); |
| nameBuffer_ = reinterpret_cast<Ch *>(tokens_ + tokenCount_); |
| if (rhs.tokenCount_ > 0) { |
| std::memcpy(tokens_, rhs.tokens_, rhs.tokenCount_ * sizeof(Token)); |
| } |
| if (nameBufferSize > 0) { |
| std::memcpy(nameBuffer_, rhs.nameBuffer_, nameBufferSize * sizeof(Ch)); |
| } |
| |
| // Adjust pointers to name buffer |
| std::ptrdiff_t diff = nameBuffer_ - rhs.nameBuffer_; |
| for (Token *t = tokens_; t != tokens_ + rhs.tokenCount_; ++t) |
| t->name += diff; |
| |
| return nameBuffer_ + nameBufferSize; |
| } |
| |
| //! Check whether a character should be percent-encoded. |
| /*! |
| According to RFC 3986 2.3 Unreserved Characters. |
| \param c The character (code unit) to be tested. |
| */ |
| bool NeedPercentEncode(Ch c) const { |
| return !((c >= '0' && c <= '9') || (c >= 'A' && c <='Z') || (c >= 'a' && c <= 'z') || c == '-' || c == '.' || c == '_' || c =='~'); |
| } |
| |
| //! Parse a JSON String or its URI fragment representation into tokens. |
| #ifndef __clang__ // -Wdocumentation |
| /*! |
| \param source Either a JSON Pointer string, or its URI fragment representation. Not need to be null terminated. |
| \param length Length of the source string. |
| \note Source cannot be JSON String Representation of JSON Pointer, e.g. In "/\u0000", \u0000 will not be unescaped. |
| */ |
| #endif |
| void Parse(const Ch* source, size_t length) { |
| RAPIDJSON_ASSERT(source != NULL); |
| RAPIDJSON_ASSERT(nameBuffer_ == 0); |
| RAPIDJSON_ASSERT(tokens_ == 0); |
| |
| // Create own allocator if user did not supply. |
| if (!allocator_) |
| ownAllocator_ = allocator_ = RAPIDJSON_NEW(Allocator)(); |
| |
| // Count number of '/' as tokenCount |
| tokenCount_ = 0; |
| for (const Ch* s = source; s != source + length; s++) |
| if (*s == '/') |
| tokenCount_++; |
| |
| Token* token = tokens_ = static_cast<Token *>(allocator_->Malloc(tokenCount_ * sizeof(Token) + length * sizeof(Ch))); |
| Ch* name = nameBuffer_ = reinterpret_cast<Ch *>(tokens_ + tokenCount_); |
| size_t i = 0; |
| |
| // Detect if it is a URI fragment |
| bool uriFragment = false; |
| if (source[i] == '#') { |
| uriFragment = true; |
| i++; |
| } |
| |
| if (i != length && source[i] != '/') { |
| parseErrorCode_ = kPointerParseErrorTokenMustBeginWithSolidus; |
| goto error; |
| } |
| |
| while (i < length) { |
| RAPIDJSON_ASSERT(source[i] == '/'); |
| i++; // consumes '/' |
| |
| token->name = name; |
| bool isNumber = true; |
| |
| while (i < length && source[i] != '/') { |
| Ch c = source[i]; |
| if (uriFragment) { |
| // Decoding percent-encoding for URI fragment |
| if (c == '%') { |
| PercentDecodeStream is(&source[i], source + length); |
| GenericInsituStringStream<EncodingType> os(name); |
| Ch* begin = os.PutBegin(); |
| if (!Transcoder<UTF8<>, EncodingType>().Validate(is, os) || !is.IsValid()) { |
| parseErrorCode_ = kPointerParseErrorInvalidPercentEncoding; |
| goto error; |
| } |
| size_t len = os.PutEnd(begin); |
| i += is.Tell() - 1; |
| if (len == 1) |
| c = *name; |
| else { |
| name += len; |
| isNumber = false; |
| i++; |
| continue; |
| } |
| } |
| else if (NeedPercentEncode(c)) { |
| parseErrorCode_ = kPointerParseErrorCharacterMustPercentEncode; |
| goto error; |
| } |
| } |
| |
| i++; |
| |
| // Escaping "~0" -> '~', "~1" -> '/' |
| if (c == '~') { |
| if (i < length) { |
| c = source[i]; |
| if (c == '0') c = '~'; |
| else if (c == '1') c = '/'; |
| else { |
| parseErrorCode_ = kPointerParseErrorInvalidEscape; |
| goto error; |
| } |
| i++; |
| } |
| else { |
| parseErrorCode_ = kPointerParseErrorInvalidEscape; |
| goto error; |
| } |
| } |
| |
| // First check for index: all of characters are digit |
| if (c < '0' || c > '9') |
| isNumber = false; |
| |
| *name++ = c; |
| } |
| token->length = static_cast<SizeType>(name - token->name); |
| if (token->length == 0) |
| isNumber = false; |
| *name++ = '\0'; // Null terminator |
| |
| // Second check for index: more than one digit cannot have leading zero |
| if (isNumber && token->length > 1 && token->name[0] == '0') |
| isNumber = false; |
| |
| // String to SizeType conversion |
| SizeType n = 0; |
| if (isNumber) { |
| for (size_t j = 0; j < token->length; j++) { |
| SizeType m = n * 10 + static_cast<SizeType>(token->name[j] - '0'); |
| if (m < n) { // overflow detection |
| isNumber = false; |
| break; |
| } |
| n = m; |
| } |
| } |
| |
| token->index = isNumber ? n : kPointerInvalidIndex; |
| token++; |
| } |
| |
| RAPIDJSON_ASSERT(name <= nameBuffer_ + length); // Should not overflow buffer |
| parseErrorCode_ = kPointerParseErrorNone; |
| return; |
| |
| error: |
| Allocator::Free(tokens_); |
| nameBuffer_ = 0; |
| tokens_ = 0; |
| tokenCount_ = 0; |
| parseErrorOffset_ = i; |
| return; |
| } |
| |
| //! Stringify to string or URI fragment representation. |
| /*! |
| \tparam uriFragment True for stringifying to URI fragment representation. False for string representation. |
| \tparam OutputStream type of output stream. |
| \param os The output stream. |
| */ |
| template<bool uriFragment, typename OutputStream> |
| bool Stringify(OutputStream& os) const { |
| RAPIDJSON_ASSERT(IsValid()); |
| |
| if (uriFragment) |
| os.Put('#'); |
| |
| for (Token *t = tokens_; t != tokens_ + tokenCount_; ++t) { |
| os.Put('/'); |
| for (size_t j = 0; j < t->length; j++) { |
| Ch c = t->name[j]; |
| if (c == '~') { |
| os.Put('~'); |
| os.Put('0'); |
| } |
| else if (c == '/') { |
| os.Put('~'); |
| os.Put('1'); |
| } |
| else if (uriFragment && NeedPercentEncode(c)) { |
| // Transcode to UTF8 sequence |
| GenericStringStream<typename ValueType::EncodingType> source(&t->name[j]); |
| PercentEncodeStream<OutputStream> target(os); |
| if (!Transcoder<EncodingType, UTF8<> >().Validate(source, target)) |
| return false; |
| j += source.Tell() - 1; |
| } |
| else |
| os.Put(c); |
| } |
| } |
| return true; |
| } |
| |
| //! A helper stream for decoding a percent-encoded sequence into code unit. |
| /*! |
| This stream decodes %XY triplet into code unit (0-255). |
| If it encounters invalid characters, it sets output code unit as 0 and |
| mark invalid, and to be checked by IsValid(). |
| */ |
| class PercentDecodeStream { |
| public: |
| typedef typename ValueType::Ch Ch; |
| |
| //! Constructor |
| /*! |
| \param source Start of the stream |
| \param end Past-the-end of the stream. |
| */ |
| PercentDecodeStream(const Ch* source, const Ch* end) : src_(source), head_(source), end_(end), valid_(true) {} |
| |
| Ch Take() { |
| if (*src_ != '%' || src_ + 3 > end_) { // %XY triplet |
| valid_ = false; |
| return 0; |
| } |
| src_++; |
| Ch c = 0; |
| for (int j = 0; j < 2; j++) { |
| c = static_cast<Ch>(c << 4); |
| Ch h = *src_; |
| if (h >= '0' && h <= '9') c = static_cast<Ch>(c + h - '0'); |
| else if (h >= 'A' && h <= 'F') c = static_cast<Ch>(c + h - 'A' + 10); |
| else if (h >= 'a' && h <= 'f') c = static_cast<Ch>(c + h - 'a' + 10); |
| else { |
| valid_ = false; |
| return 0; |
| } |
| src_++; |
| } |
| return c; |
| } |
| |
| size_t Tell() const { return static_cast<size_t>(src_ - head_); } |
| bool IsValid() const { return valid_; } |
| |
| private: |
| const Ch* src_; //!< Current read position. |
| const Ch* head_; //!< Original head of the string. |
| const Ch* end_; //!< Past-the-end position. |
| bool valid_; //!< Whether the parsing is valid. |
| }; |
| |
| //! A helper stream to encode character (UTF-8 code unit) into percent-encoded sequence. |
| template <typename OutputStream> |
| class PercentEncodeStream { |
| public: |
| PercentEncodeStream(OutputStream& os) : os_(os) {} |
| void Put(char c) { // UTF-8 must be byte |
| unsigned char u = static_cast<unsigned char>(c); |
| static const char hexDigits[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; |
| os_.Put('%'); |
| os_.Put(static_cast<typename OutputStream::Ch>(hexDigits[u >> 4])); |
| os_.Put(static_cast<typename OutputStream::Ch>(hexDigits[u & 15])); |
| } |
| private: |
| OutputStream& os_; |
| }; |
| |
| Allocator* allocator_; //!< The current allocator. It is either user-supplied or equal to ownAllocator_. |
| Allocator* ownAllocator_; //!< Allocator owned by this Pointer. |
| Ch* nameBuffer_; //!< A buffer containing all names in tokens. |
| Token* tokens_; //!< A list of tokens. |
| size_t tokenCount_; //!< Number of tokens in tokens_. |
| size_t parseErrorOffset_; //!< Offset in code unit when parsing fail. |
| PointerParseErrorCode parseErrorCode_; //!< Parsing error code. |
| }; |
| |
| //! GenericPointer for Value (UTF-8, default allocator). |
| typedef GenericPointer<Value> Pointer; |
| |
| //!@name Helper functions for GenericPointer |
| //@{ |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| template <typename T> |
| typename T::ValueType& CreateValueByPointer(T& root, const GenericPointer<typename T::ValueType>& pointer, typename T::AllocatorType& a) { |
| return pointer.Create(root, a); |
| } |
| |
| template <typename T, typename CharType, size_t N> |
| typename T::ValueType& CreateValueByPointer(T& root, const CharType(&source)[N], typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).Create(root, a); |
| } |
| |
| // No allocator parameter |
| |
| template <typename DocumentType> |
| typename DocumentType::ValueType& CreateValueByPointer(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer) { |
| return pointer.Create(document); |
| } |
| |
| template <typename DocumentType, typename CharType, size_t N> |
| typename DocumentType::ValueType& CreateValueByPointer(DocumentType& document, const CharType(&source)[N]) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).Create(document); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| template <typename T> |
| typename T::ValueType* GetValueByPointer(T& root, const GenericPointer<typename T::ValueType>& pointer, size_t* unresolvedTokenIndex = 0) { |
| return pointer.Get(root, unresolvedTokenIndex); |
| } |
| |
| template <typename T> |
| const typename T::ValueType* GetValueByPointer(const T& root, const GenericPointer<typename T::ValueType>& pointer, size_t* unresolvedTokenIndex = 0) { |
| return pointer.Get(root, unresolvedTokenIndex); |
| } |
| |
| template <typename T, typename CharType, size_t N> |
| typename T::ValueType* GetValueByPointer(T& root, const CharType (&source)[N], size_t* unresolvedTokenIndex = 0) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).Get(root, unresolvedTokenIndex); |
| } |
| |
| template <typename T, typename CharType, size_t N> |
| const typename T::ValueType* GetValueByPointer(const T& root, const CharType(&source)[N], size_t* unresolvedTokenIndex = 0) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).Get(root, unresolvedTokenIndex); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| template <typename T> |
| typename T::ValueType& GetValueByPointerWithDefault(T& root, const GenericPointer<typename T::ValueType>& pointer, const typename T::ValueType& defaultValue, typename T::AllocatorType& a) { |
| return pointer.GetWithDefault(root, defaultValue, a); |
| } |
| |
| template <typename T> |
| typename T::ValueType& GetValueByPointerWithDefault(T& root, const GenericPointer<typename T::ValueType>& pointer, const typename T::Ch* defaultValue, typename T::AllocatorType& a) { |
| return pointer.GetWithDefault(root, defaultValue, a); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| template <typename T> |
| typename T::ValueType& GetValueByPointerWithDefault(T& root, const GenericPointer<typename T::ValueType>& pointer, const std::basic_string<typename T::Ch>& defaultValue, typename T::AllocatorType& a) { |
| return pointer.GetWithDefault(root, defaultValue, a); |
| } |
| #endif |
| |
| template <typename T, typename T2> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T2>, internal::IsGenericValue<T2> >), (typename T::ValueType&)) |
| GetValueByPointerWithDefault(T& root, const GenericPointer<typename T::ValueType>& pointer, T2 defaultValue, typename T::AllocatorType& a) { |
| return pointer.GetWithDefault(root, defaultValue, a); |
| } |
| |
| template <typename T, typename CharType, size_t N> |
| typename T::ValueType& GetValueByPointerWithDefault(T& root, const CharType(&source)[N], const typename T::ValueType& defaultValue, typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).GetWithDefault(root, defaultValue, a); |
| } |
| |
| template <typename T, typename CharType, size_t N> |
| typename T::ValueType& GetValueByPointerWithDefault(T& root, const CharType(&source)[N], const typename T::Ch* defaultValue, typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).GetWithDefault(root, defaultValue, a); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| template <typename T, typename CharType, size_t N> |
| typename T::ValueType& GetValueByPointerWithDefault(T& root, const CharType(&source)[N], const std::basic_string<typename T::Ch>& defaultValue, typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).GetWithDefault(root, defaultValue, a); |
| } |
| #endif |
| |
| template <typename T, typename CharType, size_t N, typename T2> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T2>, internal::IsGenericValue<T2> >), (typename T::ValueType&)) |
| GetValueByPointerWithDefault(T& root, const CharType(&source)[N], T2 defaultValue, typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).GetWithDefault(root, defaultValue, a); |
| } |
| |
| // No allocator parameter |
| |
| template <typename DocumentType> |
| typename DocumentType::ValueType& GetValueByPointerWithDefault(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer, const typename DocumentType::ValueType& defaultValue) { |
| return pointer.GetWithDefault(document, defaultValue); |
| } |
| |
| template <typename DocumentType> |
| typename DocumentType::ValueType& GetValueByPointerWithDefault(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer, const typename DocumentType::Ch* defaultValue) { |
| return pointer.GetWithDefault(document, defaultValue); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| template <typename DocumentType> |
| typename DocumentType::ValueType& GetValueByPointerWithDefault(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer, const std::basic_string<typename DocumentType::Ch>& defaultValue) { |
| return pointer.GetWithDefault(document, defaultValue); |
| } |
| #endif |
| |
| template <typename DocumentType, typename T2> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T2>, internal::IsGenericValue<T2> >), (typename DocumentType::ValueType&)) |
| GetValueByPointerWithDefault(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer, T2 defaultValue) { |
| return pointer.GetWithDefault(document, defaultValue); |
| } |
| |
| template <typename DocumentType, typename CharType, size_t N> |
| typename DocumentType::ValueType& GetValueByPointerWithDefault(DocumentType& document, const CharType(&source)[N], const typename DocumentType::ValueType& defaultValue) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).GetWithDefault(document, defaultValue); |
| } |
| |
| template <typename DocumentType, typename CharType, size_t N> |
| typename DocumentType::ValueType& GetValueByPointerWithDefault(DocumentType& document, const CharType(&source)[N], const typename DocumentType::Ch* defaultValue) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).GetWithDefault(document, defaultValue); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| template <typename DocumentType, typename CharType, size_t N> |
| typename DocumentType::ValueType& GetValueByPointerWithDefault(DocumentType& document, const CharType(&source)[N], const std::basic_string<typename DocumentType::Ch>& defaultValue) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).GetWithDefault(document, defaultValue); |
| } |
| #endif |
| |
| template <typename DocumentType, typename CharType, size_t N, typename T2> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T2>, internal::IsGenericValue<T2> >), (typename DocumentType::ValueType&)) |
| GetValueByPointerWithDefault(DocumentType& document, const CharType(&source)[N], T2 defaultValue) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).GetWithDefault(document, defaultValue); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| template <typename T> |
| typename T::ValueType& SetValueByPointer(T& root, const GenericPointer<typename T::ValueType>& pointer, typename T::ValueType& value, typename T::AllocatorType& a) { |
| return pointer.Set(root, value, a); |
| } |
| |
| template <typename T> |
| typename T::ValueType& SetValueByPointer(T& root, const GenericPointer<typename T::ValueType>& pointer, const typename T::ValueType& value, typename T::AllocatorType& a) { |
| return pointer.Set(root, value, a); |
| } |
| |
| template <typename T> |
| typename T::ValueType& SetValueByPointer(T& root, const GenericPointer<typename T::ValueType>& pointer, const typename T::Ch* value, typename T::AllocatorType& a) { |
| return pointer.Set(root, value, a); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| template <typename T> |
| typename T::ValueType& SetValueByPointer(T& root, const GenericPointer<typename T::ValueType>& pointer, const std::basic_string<typename T::Ch>& value, typename T::AllocatorType& a) { |
| return pointer.Set(root, value, a); |
| } |
| #endif |
| |
| template <typename T, typename T2> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T2>, internal::IsGenericValue<T2> >), (typename T::ValueType&)) |
| SetValueByPointer(T& root, const GenericPointer<typename T::ValueType>& pointer, T2 value, typename T::AllocatorType& a) { |
| return pointer.Set(root, value, a); |
| } |
| |
| template <typename T, typename CharType, size_t N> |
| typename T::ValueType& SetValueByPointer(T& root, const CharType(&source)[N], typename T::ValueType& value, typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).Set(root, value, a); |
| } |
| |
| template <typename T, typename CharType, size_t N> |
| typename T::ValueType& SetValueByPointer(T& root, const CharType(&source)[N], const typename T::ValueType& value, typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).Set(root, value, a); |
| } |
| |
| template <typename T, typename CharType, size_t N> |
| typename T::ValueType& SetValueByPointer(T& root, const CharType(&source)[N], const typename T::Ch* value, typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).Set(root, value, a); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| template <typename T, typename CharType, size_t N> |
| typename T::ValueType& SetValueByPointer(T& root, const CharType(&source)[N], const std::basic_string<typename T::Ch>& value, typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).Set(root, value, a); |
| } |
| #endif |
| |
| template <typename T, typename CharType, size_t N, typename T2> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T2>, internal::IsGenericValue<T2> >), (typename T::ValueType&)) |
| SetValueByPointer(T& root, const CharType(&source)[N], T2 value, typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).Set(root, value, a); |
| } |
| |
| // No allocator parameter |
| |
| template <typename DocumentType> |
| typename DocumentType::ValueType& SetValueByPointer(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer, typename DocumentType::ValueType& value) { |
| return pointer.Set(document, value); |
| } |
| |
| template <typename DocumentType> |
| typename DocumentType::ValueType& SetValueByPointer(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer, const typename DocumentType::ValueType& value) { |
| return pointer.Set(document, value); |
| } |
| |
| template <typename DocumentType> |
| typename DocumentType::ValueType& SetValueByPointer(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer, const typename DocumentType::Ch* value) { |
| return pointer.Set(document, value); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| template <typename DocumentType> |
| typename DocumentType::ValueType& SetValueByPointer(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer, const std::basic_string<typename DocumentType::Ch>& value) { |
| return pointer.Set(document, value); |
| } |
| #endif |
| |
| template <typename DocumentType, typename T2> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T2>, internal::IsGenericValue<T2> >), (typename DocumentType::ValueType&)) |
| SetValueByPointer(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer, T2 value) { |
| return pointer.Set(document, value); |
| } |
| |
| template <typename DocumentType, typename CharType, size_t N> |
| typename DocumentType::ValueType& SetValueByPointer(DocumentType& document, const CharType(&source)[N], typename DocumentType::ValueType& value) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).Set(document, value); |
| } |
| |
| template <typename DocumentType, typename CharType, size_t N> |
| typename DocumentType::ValueType& SetValueByPointer(DocumentType& document, const CharType(&source)[N], const typename DocumentType::ValueType& value) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).Set(document, value); |
| } |
| |
| template <typename DocumentType, typename CharType, size_t N> |
| typename DocumentType::ValueType& SetValueByPointer(DocumentType& document, const CharType(&source)[N], const typename DocumentType::Ch* value) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).Set(document, value); |
| } |
| |
| #if RAPIDJSON_HAS_STDSTRING |
| template <typename DocumentType, typename CharType, size_t N> |
| typename DocumentType::ValueType& SetValueByPointer(DocumentType& document, const CharType(&source)[N], const std::basic_string<typename DocumentType::Ch>& value) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).Set(document, value); |
| } |
| #endif |
| |
| template <typename DocumentType, typename CharType, size_t N, typename T2> |
| RAPIDJSON_DISABLEIF_RETURN((internal::OrExpr<internal::IsPointer<T2>, internal::IsGenericValue<T2> >), (typename DocumentType::ValueType&)) |
| SetValueByPointer(DocumentType& document, const CharType(&source)[N], T2 value) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).Set(document, value); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| template <typename T> |
| typename T::ValueType& SwapValueByPointer(T& root, const GenericPointer<typename T::ValueType>& pointer, typename T::ValueType& value, typename T::AllocatorType& a) { |
| return pointer.Swap(root, value, a); |
| } |
| |
| template <typename T, typename CharType, size_t N> |
| typename T::ValueType& SwapValueByPointer(T& root, const CharType(&source)[N], typename T::ValueType& value, typename T::AllocatorType& a) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).Swap(root, value, a); |
| } |
| |
| template <typename DocumentType> |
| typename DocumentType::ValueType& SwapValueByPointer(DocumentType& document, const GenericPointer<typename DocumentType::ValueType>& pointer, typename DocumentType::ValueType& value) { |
| return pointer.Swap(document, value); |
| } |
| |
| template <typename DocumentType, typename CharType, size_t N> |
| typename DocumentType::ValueType& SwapValueByPointer(DocumentType& document, const CharType(&source)[N], typename DocumentType::ValueType& value) { |
| return GenericPointer<typename DocumentType::ValueType>(source, N - 1).Swap(document, value); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| template <typename T> |
| bool EraseValueByPointer(T& root, const GenericPointer<typename T::ValueType>& pointer) { |
| return pointer.Erase(root); |
| } |
| |
| template <typename T, typename CharType, size_t N> |
| bool EraseValueByPointer(T& root, const CharType(&source)[N]) { |
| return GenericPointer<typename T::ValueType>(source, N - 1).Erase(root); |
| } |
| |
| //@} |
| |
| RAPIDJSON_NAMESPACE_END |
| |
| #if defined(__clang__) || defined(_MSC_VER) |
| RAPIDJSON_DIAG_POP |
| #endif |
| |
| #endif // RAPIDJSON_POINTER_H_ |
