From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- .../components/jsoncpp/src/lib_json/json_value.cpp | 1634 ++++++++++++++++++++ 1 file changed, 1634 insertions(+) create mode 100644 toolkit/components/jsoncpp/src/lib_json/json_value.cpp (limited to 'toolkit/components/jsoncpp/src/lib_json/json_value.cpp') diff --git a/toolkit/components/jsoncpp/src/lib_json/json_value.cpp b/toolkit/components/jsoncpp/src/lib_json/json_value.cpp new file mode 100644 index 0000000000..aa2b744ca8 --- /dev/null +++ b/toolkit/components/jsoncpp/src/lib_json/json_value.cpp @@ -0,0 +1,1634 @@ +// Copyright 2011 Baptiste Lepilleur and The JsonCpp Authors +// Distributed under MIT license, or public domain if desired and +// recognized in your jurisdiction. +// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE + +#if !defined(JSON_IS_AMALGAMATION) +#include +#include +#include +#endif // if !defined(JSON_IS_AMALGAMATION) +#include +#include +#include +#include +#include +#include +#include +#include + +// Provide implementation equivalent of std::snprintf for older _MSC compilers +#if defined(_MSC_VER) && _MSC_VER < 1900 +#include +static int msvc_pre1900_c99_vsnprintf(char* outBuf, size_t size, + const char* format, va_list ap) { + int count = -1; + if (size != 0) + count = _vsnprintf_s(outBuf, size, _TRUNCATE, format, ap); + if (count == -1) + count = _vscprintf(format, ap); + return count; +} + +int JSON_API msvc_pre1900_c99_snprintf(char* outBuf, size_t size, + const char* format, ...) { + va_list ap; + va_start(ap, format); + const int count = msvc_pre1900_c99_vsnprintf(outBuf, size, format, ap); + va_end(ap); + return count; +} +#endif + +// Disable warning C4702 : unreachable code +#if defined(_MSC_VER) +#pragma warning(disable : 4702) +#endif + +#define JSON_ASSERT_UNREACHABLE assert(false) + +namespace Json { +template +static std::unique_ptr cloneUnique(const std::unique_ptr& p) { + std::unique_ptr r; + if (p) { + r = std::unique_ptr(new T(*p)); + } + return r; +} + +// This is a walkaround to avoid the static initialization of Value::null. +// kNull must be word-aligned to avoid crashing on ARM. We use an alignment of +// 8 (instead of 4) as a bit of future-proofing. +#if defined(__ARMEL__) +#define ALIGNAS(byte_alignment) __attribute__((aligned(byte_alignment))) +#else +#define ALIGNAS(byte_alignment) +#endif + +// static +Value const& Value::nullSingleton() { + static Value const nullStatic; + return nullStatic; +} + +#if JSON_USE_NULLREF +// for backwards compatibility, we'll leave these global references around, but +// DO NOT use them in JSONCPP library code any more! +// static +Value const& Value::null = Value::nullSingleton(); + +// static +Value const& Value::nullRef = Value::nullSingleton(); +#endif + +#if !defined(JSON_USE_INT64_DOUBLE_CONVERSION) +template +static inline bool InRange(double d, T min, U max) { + // The casts can lose precision, but we are looking only for + // an approximate range. Might fail on edge cases though. ~cdunn + return d >= static_cast(min) && d <= static_cast(max); +} +#else // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION) +static inline double integerToDouble(Json::UInt64 value) { + return static_cast(Int64(value / 2)) * 2.0 + + static_cast(Int64(value & 1)); +} + +template static inline double integerToDouble(T value) { + return static_cast(value); +} + +template +static inline bool InRange(double d, T min, U max) { + return d >= integerToDouble(min) && d <= integerToDouble(max); +} +#endif // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION) + +/** Duplicates the specified string value. + * @param value Pointer to the string to duplicate. Must be zero-terminated if + * length is "unknown". + * @param length Length of the value. if equals to unknown, then it will be + * computed using strlen(value). + * @return Pointer on the duplicate instance of string. + */ +static inline char* duplicateStringValue(const char* value, size_t length) { + // Avoid an integer overflow in the call to malloc below by limiting length + // to a sane value. + if (length >= static_cast(Value::maxInt)) + length = Value::maxInt - 1; + + auto newString = static_cast(malloc(length + 1)); + if (newString == nullptr) { + throwRuntimeError("in Json::Value::duplicateStringValue(): " + "Failed to allocate string value buffer"); + } + memcpy(newString, value, length); + newString[length] = 0; + return newString; +} + +/* Record the length as a prefix. + */ +static inline char* duplicateAndPrefixStringValue(const char* value, + unsigned int length) { + // Avoid an integer overflow in the call to malloc below by limiting length + // to a sane value. + JSON_ASSERT_MESSAGE(length <= static_cast(Value::maxInt) - + sizeof(unsigned) - 1U, + "in Json::Value::duplicateAndPrefixStringValue(): " + "length too big for prefixing"); + size_t actualLength = sizeof(length) + length + 1; + auto newString = static_cast(malloc(actualLength)); + if (newString == nullptr) { + throwRuntimeError("in Json::Value::duplicateAndPrefixStringValue(): " + "Failed to allocate string value buffer"); + } + *reinterpret_cast(newString) = length; + memcpy(newString + sizeof(unsigned), value, length); + newString[actualLength - 1U] = + 0; // to avoid buffer over-run accidents by users later + return newString; +} +inline static void decodePrefixedString(bool isPrefixed, char const* prefixed, + unsigned* length, char const** value) { + if (!isPrefixed) { + *length = static_cast(strlen(prefixed)); + *value = prefixed; + } else { + *length = *reinterpret_cast(prefixed); + *value = prefixed + sizeof(unsigned); + } +} +/** Free the string duplicated by + * duplicateStringValue()/duplicateAndPrefixStringValue(). + */ +#if JSONCPP_USING_SECURE_MEMORY +static inline void releasePrefixedStringValue(char* value) { + unsigned length = 0; + char const* valueDecoded; + decodePrefixedString(true, value, &length, &valueDecoded); + size_t const size = sizeof(unsigned) + length + 1U; + memset(value, 0, size); + free(value); +} +static inline void releaseStringValue(char* value, unsigned length) { + // length==0 => we allocated the strings memory + size_t size = (length == 0) ? strlen(value) : length; + memset(value, 0, size); + free(value); +} +#else // !JSONCPP_USING_SECURE_MEMORY +static inline void releasePrefixedStringValue(char* value) { free(value); } +static inline void releaseStringValue(char* value, unsigned) { free(value); } +#endif // JSONCPP_USING_SECURE_MEMORY + +} // namespace Json + +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// +// ValueInternals... +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// +#if !defined(JSON_IS_AMALGAMATION) + +#include "json_valueiterator.inl" +#endif // if !defined(JSON_IS_AMALGAMATION) + +namespace Json { + +#if JSON_USE_EXCEPTION +Exception::Exception(String msg) : msg_(std::move(msg)) {} +Exception::~Exception() noexcept = default; +char const* Exception::what() const noexcept { return msg_.c_str(); } +RuntimeError::RuntimeError(String const& msg) : Exception(msg) {} +LogicError::LogicError(String const& msg) : Exception(msg) {} +JSONCPP_NORETURN void throwRuntimeError(String const& msg) { + throw RuntimeError(msg); +} +JSONCPP_NORETURN void throwLogicError(String const& msg) { + throw LogicError(msg); +} +#else // !JSON_USE_EXCEPTION +JSONCPP_NORETURN void throwRuntimeError(String const& msg) { + std::cerr << msg << std::endl; + abort(); +} +JSONCPP_NORETURN void throwLogicError(String const& msg) { + std::cerr << msg << std::endl; + abort(); +} +#endif + +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// +// class Value::CZString +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// + +// Notes: policy_ indicates if the string was allocated when +// a string is stored. + +Value::CZString::CZString(ArrayIndex index) : cstr_(nullptr), index_(index) {} + +Value::CZString::CZString(char const* str, unsigned length, + DuplicationPolicy allocate) + : cstr_(str) { + // allocate != duplicate + storage_.policy_ = allocate & 0x3; + storage_.length_ = length & 0x3FFFFFFF; +} + +Value::CZString::CZString(const CZString& other) { + cstr_ = (other.storage_.policy_ != noDuplication && other.cstr_ != nullptr + ? duplicateStringValue(other.cstr_, other.storage_.length_) + : other.cstr_); + storage_.policy_ = + static_cast( + other.cstr_ + ? (static_cast(other.storage_.policy_) == + noDuplication + ? noDuplication + : duplicate) + : static_cast(other.storage_.policy_)) & + 3U; + storage_.length_ = other.storage_.length_; +} + +Value::CZString::CZString(CZString&& other) noexcept + : cstr_(other.cstr_), index_(other.index_) { + other.cstr_ = nullptr; +} + +Value::CZString::~CZString() { + if (cstr_ && storage_.policy_ == duplicate) { + releaseStringValue(const_cast(cstr_), + storage_.length_ + 1U); // +1 for null terminating + // character for sake of + // completeness but not actually + // necessary + } +} + +void Value::CZString::swap(CZString& other) { + std::swap(cstr_, other.cstr_); + std::swap(index_, other.index_); +} + +Value::CZString& Value::CZString::operator=(const CZString& other) { + cstr_ = other.cstr_; + index_ = other.index_; + return *this; +} + +Value::CZString& Value::CZString::operator=(CZString&& other) noexcept { + cstr_ = other.cstr_; + index_ = other.index_; + other.cstr_ = nullptr; + return *this; +} + +bool Value::CZString::operator<(const CZString& other) const { + if (!cstr_) + return index_ < other.index_; + // return strcmp(cstr_, other.cstr_) < 0; + // Assume both are strings. + unsigned this_len = this->storage_.length_; + unsigned other_len = other.storage_.length_; + unsigned min_len = std::min(this_len, other_len); + JSON_ASSERT(this->cstr_ && other.cstr_); + int comp = memcmp(this->cstr_, other.cstr_, min_len); + if (comp < 0) + return true; + if (comp > 0) + return false; + return (this_len < other_len); +} + +bool Value::CZString::operator==(const CZString& other) const { + if (!cstr_) + return index_ == other.index_; + // return strcmp(cstr_, other.cstr_) == 0; + // Assume both are strings. + unsigned this_len = this->storage_.length_; + unsigned other_len = other.storage_.length_; + if (this_len != other_len) + return false; + JSON_ASSERT(this->cstr_ && other.cstr_); + int comp = memcmp(this->cstr_, other.cstr_, this_len); + return comp == 0; +} + +ArrayIndex Value::CZString::index() const { return index_; } + +// const char* Value::CZString::c_str() const { return cstr_; } +const char* Value::CZString::data() const { return cstr_; } +unsigned Value::CZString::length() const { return storage_.length_; } +bool Value::CZString::isStaticString() const { + return storage_.policy_ == noDuplication; +} + +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// +// class Value::Value +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// +// ////////////////////////////////////////////////////////////////// + +/*! \internal Default constructor initialization must be equivalent to: + * memset( this, 0, sizeof(Value) ) + * This optimization is used in ValueInternalMap fast allocator. + */ +Value::Value(ValueType type) { + static char const emptyString[] = ""; + initBasic(type); + switch (type) { + case nullValue: + break; + case intValue: + case uintValue: + value_.int_ = 0; + break; + case realValue: + value_.real_ = 0.0; + break; + case stringValue: + // allocated_ == false, so this is safe. + value_.string_ = const_cast(static_cast(emptyString)); + break; + case arrayValue: + case objectValue: + value_.map_ = new ObjectValues(); + break; + case booleanValue: + value_.bool_ = false; + break; + default: + JSON_ASSERT_UNREACHABLE; + } +} + +Value::Value(Int value) { + initBasic(intValue); + value_.int_ = value; +} + +Value::Value(UInt value) { + initBasic(uintValue); + value_.uint_ = value; +} +#if defined(JSON_HAS_INT64) +Value::Value(Int64 value) { + initBasic(intValue); + value_.int_ = value; +} +Value::Value(UInt64 value) { + initBasic(uintValue); + value_.uint_ = value; +} +#endif // defined(JSON_HAS_INT64) + +Value::Value(double value) { + initBasic(realValue); + value_.real_ = value; +} + +Value::Value(const char* value) { + initBasic(stringValue, true); + JSON_ASSERT_MESSAGE(value != nullptr, + "Null Value Passed to Value Constructor"); + value_.string_ = duplicateAndPrefixStringValue( + value, static_cast(strlen(value))); +} + +Value::Value(const char* begin, const char* end) { + initBasic(stringValue, true); + value_.string_ = + duplicateAndPrefixStringValue(begin, static_cast(end - begin)); +} + +Value::Value(const String& value) { + initBasic(stringValue, true); + value_.string_ = duplicateAndPrefixStringValue( + value.data(), static_cast(value.length())); +} + +Value::Value(const StaticString& value) { + initBasic(stringValue); + value_.string_ = const_cast(value.c_str()); +} + +Value::Value(bool value) { + initBasic(booleanValue); + value_.bool_ = value; +} + +Value::Value(const Value& other) { + dupPayload(other); + dupMeta(other); +} + +Value::Value(Value&& other) noexcept { + initBasic(nullValue); + swap(other); +} + +Value::~Value() { + releasePayload(); + value_.uint_ = 0; +} + +Value& Value::operator=(const Value& other) { + Value(other).swap(*this); + return *this; +} + +Value& Value::operator=(Value&& other) noexcept { + other.swap(*this); + return *this; +} + +void Value::swapPayload(Value& other) { + std::swap(bits_, other.bits_); + std::swap(value_, other.value_); +} + +void Value::copyPayload(const Value& other) { + releasePayload(); + dupPayload(other); +} + +void Value::swap(Value& other) { + swapPayload(other); + std::swap(comments_, other.comments_); + std::swap(start_, other.start_); + std::swap(limit_, other.limit_); +} + +void Value::copy(const Value& other) { + copyPayload(other); + dupMeta(other); +} + +ValueType Value::type() const { + return static_cast(bits_.value_type_); +} + +int Value::compare(const Value& other) const { + if (*this < other) + return -1; + if (*this > other) + return 1; + return 0; +} + +bool Value::operator<(const Value& other) const { + int typeDelta = type() - other.type(); + if (typeDelta) + return typeDelta < 0; + switch (type()) { + case nullValue: + return false; + case intValue: + return value_.int_ < other.value_.int_; + case uintValue: + return value_.uint_ < other.value_.uint_; + case realValue: + return value_.real_ < other.value_.real_; + case booleanValue: + return value_.bool_ < other.value_.bool_; + case stringValue: { + if ((value_.string_ == nullptr) || (other.value_.string_ == nullptr)) { + return other.value_.string_ != nullptr; + } + unsigned this_len; + unsigned other_len; + char const* this_str; + char const* other_str; + decodePrefixedString(this->isAllocated(), this->value_.string_, &this_len, + &this_str); + decodePrefixedString(other.isAllocated(), other.value_.string_, &other_len, + &other_str); + unsigned min_len = std::min(this_len, other_len); + JSON_ASSERT(this_str && other_str); + int comp = memcmp(this_str, other_str, min_len); + if (comp < 0) + return true; + if (comp > 0) + return false; + return (this_len < other_len); + } + case arrayValue: + case objectValue: { + auto thisSize = value_.map_->size(); + auto otherSize = other.value_.map_->size(); + if (thisSize != otherSize) + return thisSize < otherSize; + return (*value_.map_) < (*other.value_.map_); + } + default: + JSON_ASSERT_UNREACHABLE; + } + return false; // unreachable +} + +bool Value::operator<=(const Value& other) const { return !(other < *this); } + +bool Value::operator>=(const Value& other) const { return !(*this < other); } + +bool Value::operator>(const Value& other) const { return other < *this; } + +bool Value::operator==(const Value& other) const { + if (type() != other.type()) + return false; + switch (type()) { + case nullValue: + return true; + case intValue: + return value_.int_ == other.value_.int_; + case uintValue: + return value_.uint_ == other.value_.uint_; + case realValue: + return value_.real_ == other.value_.real_; + case booleanValue: + return value_.bool_ == other.value_.bool_; + case stringValue: { + if ((value_.string_ == nullptr) || (other.value_.string_ == nullptr)) { + return (value_.string_ == other.value_.string_); + } + unsigned this_len; + unsigned other_len; + char const* this_str; + char const* other_str; + decodePrefixedString(this->isAllocated(), this->value_.string_, &this_len, + &this_str); + decodePrefixedString(other.isAllocated(), other.value_.string_, &other_len, + &other_str); + if (this_len != other_len) + return false; + JSON_ASSERT(this_str && other_str); + int comp = memcmp(this_str, other_str, this_len); + return comp == 0; + } + case arrayValue: + case objectValue: + return value_.map_->size() == other.value_.map_->size() && + (*value_.map_) == (*other.value_.map_); + default: + JSON_ASSERT_UNREACHABLE; + } + return false; // unreachable +} + +bool Value::operator!=(const Value& other) const { return !(*this == other); } + +const char* Value::asCString() const { + JSON_ASSERT_MESSAGE(type() == stringValue, + "in Json::Value::asCString(): requires stringValue"); + if (value_.string_ == nullptr) + return nullptr; + unsigned this_len; + char const* this_str; + decodePrefixedString(this->isAllocated(), this->value_.string_, &this_len, + &this_str); + return this_str; +} + +#if JSONCPP_USING_SECURE_MEMORY +unsigned Value::getCStringLength() const { + JSON_ASSERT_MESSAGE(type() == stringValue, + "in Json::Value::asCString(): requires stringValue"); + if (value_.string_ == 0) + return 0; + unsigned this_len; + char const* this_str; + decodePrefixedString(this->isAllocated(), this->value_.string_, &this_len, + &this_str); + return this_len; +} +#endif + +bool Value::getString(char const** begin, char const** end) const { + if (type() != stringValue) + return false; + if (value_.string_ == nullptr) + return false; + unsigned length; + decodePrefixedString(this->isAllocated(), this->value_.string_, &length, + begin); + *end = *begin + length; + return true; +} + +String Value::asString() const { + switch (type()) { + case nullValue: + return ""; + case stringValue: { + if (value_.string_ == nullptr) + return ""; + unsigned this_len; + char const* this_str; + decodePrefixedString(this->isAllocated(), this->value_.string_, &this_len, + &this_str); + return String(this_str, this_len); + } + case booleanValue: + return value_.bool_ ? "true" : "false"; + case intValue: + return valueToString(value_.int_); + case uintValue: + return valueToString(value_.uint_); + case realValue: + return valueToString(value_.real_); + default: + JSON_FAIL_MESSAGE("Type is not convertible to string"); + } +} + +Value::Int Value::asInt() const { + switch (type()) { + case intValue: + JSON_ASSERT_MESSAGE(isInt(), "LargestInt out of Int range"); + return Int(value_.int_); + case uintValue: + JSON_ASSERT_MESSAGE(isInt(), "LargestUInt out of Int range"); + return Int(value_.uint_); + case realValue: + JSON_ASSERT_MESSAGE(InRange(value_.real_, minInt, maxInt), + "double out of Int range"); + return Int(value_.real_); + case nullValue: + return 0; + case booleanValue: + return value_.bool_ ? 1 : 0; + default: + break; + } + JSON_FAIL_MESSAGE("Value is not convertible to Int."); +} + +Value::UInt Value::asUInt() const { + switch (type()) { + case intValue: + JSON_ASSERT_MESSAGE(isUInt(), "LargestInt out of UInt range"); + return UInt(value_.int_); + case uintValue: + JSON_ASSERT_MESSAGE(isUInt(), "LargestUInt out of UInt range"); + return UInt(value_.uint_); + case realValue: + JSON_ASSERT_MESSAGE(InRange(value_.real_, 0, maxUInt), + "double out of UInt range"); + return UInt(value_.real_); + case nullValue: + return 0; + case booleanValue: + return value_.bool_ ? 1 : 0; + default: + break; + } + JSON_FAIL_MESSAGE("Value is not convertible to UInt."); +} + +#if defined(JSON_HAS_INT64) + +Value::Int64 Value::asInt64() const { + switch (type()) { + case intValue: + return Int64(value_.int_); + case uintValue: + JSON_ASSERT_MESSAGE(isInt64(), "LargestUInt out of Int64 range"); + return Int64(value_.uint_); + case realValue: + JSON_ASSERT_MESSAGE(InRange(value_.real_, minInt64, maxInt64), + "double out of Int64 range"); + return Int64(value_.real_); + case nullValue: + return 0; + case booleanValue: + return value_.bool_ ? 1 : 0; + default: + break; + } + JSON_FAIL_MESSAGE("Value is not convertible to Int64."); +} + +Value::UInt64 Value::asUInt64() const { + switch (type()) { + case intValue: + JSON_ASSERT_MESSAGE(isUInt64(), "LargestInt out of UInt64 range"); + return UInt64(value_.int_); + case uintValue: + return UInt64(value_.uint_); + case realValue: + JSON_ASSERT_MESSAGE(InRange(value_.real_, 0, maxUInt64), + "double out of UInt64 range"); + return UInt64(value_.real_); + case nullValue: + return 0; + case booleanValue: + return value_.bool_ ? 1 : 0; + default: + break; + } + JSON_FAIL_MESSAGE("Value is not convertible to UInt64."); +} +#endif // if defined(JSON_HAS_INT64) + +LargestInt Value::asLargestInt() const { +#if defined(JSON_NO_INT64) + return asInt(); +#else + return asInt64(); +#endif +} + +LargestUInt Value::asLargestUInt() const { +#if defined(JSON_NO_INT64) + return asUInt(); +#else + return asUInt64(); +#endif +} + +double Value::asDouble() const { + switch (type()) { + case intValue: + return static_cast(value_.int_); + case uintValue: +#if !defined(JSON_USE_INT64_DOUBLE_CONVERSION) + return static_cast(value_.uint_); +#else // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION) + return integerToDouble(value_.uint_); +#endif // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION) + case realValue: + return value_.real_; + case nullValue: + return 0.0; + case booleanValue: + return value_.bool_ ? 1.0 : 0.0; + default: + break; + } + JSON_FAIL_MESSAGE("Value is not convertible to double."); +} + +float Value::asFloat() const { + switch (type()) { + case intValue: + return static_cast(value_.int_); + case uintValue: +#if !defined(JSON_USE_INT64_DOUBLE_CONVERSION) + return static_cast(value_.uint_); +#else // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION) + // This can fail (silently?) if the value is bigger than MAX_FLOAT. + return static_cast(integerToDouble(value_.uint_)); +#endif // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION) + case realValue: + return static_cast(value_.real_); + case nullValue: + return 0.0; + case booleanValue: + return value_.bool_ ? 1.0F : 0.0F; + default: + break; + } + JSON_FAIL_MESSAGE("Value is not convertible to float."); +} + +bool Value::asBool() const { + switch (type()) { + case booleanValue: + return value_.bool_; + case nullValue: + return false; + case intValue: + return value_.int_ != 0; + case uintValue: + return value_.uint_ != 0; + case realValue: { + // According to JavaScript language zero or NaN is regarded as false + const auto value_classification = std::fpclassify(value_.real_); + return value_classification != FP_ZERO && value_classification != FP_NAN; + } + default: + break; + } + JSON_FAIL_MESSAGE("Value is not convertible to bool."); +} + +bool Value::isConvertibleTo(ValueType other) const { + switch (other) { + case nullValue: + return (isNumeric() && asDouble() == 0.0) || + (type() == booleanValue && !value_.bool_) || + (type() == stringValue && asString().empty()) || + (type() == arrayValue && value_.map_->empty()) || + (type() == objectValue && value_.map_->empty()) || + type() == nullValue; + case intValue: + return isInt() || + (type() == realValue && InRange(value_.real_, minInt, maxInt)) || + type() == booleanValue || type() == nullValue; + case uintValue: + return isUInt() || + (type() == realValue && InRange(value_.real_, 0, maxUInt)) || + type() == booleanValue || type() == nullValue; + case realValue: + return isNumeric() || type() == booleanValue || type() == nullValue; + case booleanValue: + return isNumeric() || type() == booleanValue || type() == nullValue; + case stringValue: + return isNumeric() || type() == booleanValue || type() == stringValue || + type() == nullValue; + case arrayValue: + return type() == arrayValue || type() == nullValue; + case objectValue: + return type() == objectValue || type() == nullValue; + } + JSON_ASSERT_UNREACHABLE; + return false; +} + +/// Number of values in array or object +ArrayIndex Value::size() const { + switch (type()) { + case nullValue: + case intValue: + case uintValue: + case realValue: + case booleanValue: + case stringValue: + return 0; + case arrayValue: // size of the array is highest index + 1 + if (!value_.map_->empty()) { + ObjectValues::const_iterator itLast = value_.map_->end(); + --itLast; + return (*itLast).first.index() + 1; + } + return 0; + case objectValue: + return ArrayIndex(value_.map_->size()); + } + JSON_ASSERT_UNREACHABLE; + return 0; // unreachable; +} + +bool Value::empty() const { + if (isNull() || isArray() || isObject()) + return size() == 0U; + return false; +} + +Value::operator bool() const { return !isNull(); } + +void Value::clear() { + JSON_ASSERT_MESSAGE(type() == nullValue || type() == arrayValue || + type() == objectValue, + "in Json::Value::clear(): requires complex value"); + start_ = 0; + limit_ = 0; + switch (type()) { + case arrayValue: + case objectValue: + value_.map_->clear(); + break; + default: + break; + } +} + +void Value::resize(ArrayIndex newSize) { + JSON_ASSERT_MESSAGE(type() == nullValue || type() == arrayValue, + "in Json::Value::resize(): requires arrayValue"); + if (type() == nullValue) + *this = Value(arrayValue); + ArrayIndex oldSize = size(); + if (newSize == 0) + clear(); + else if (newSize > oldSize) + for (ArrayIndex i = oldSize; i < newSize; ++i) + (*this)[i]; + else { + for (ArrayIndex index = newSize; index < oldSize; ++index) { + value_.map_->erase(index); + } + JSON_ASSERT(size() == newSize); + } +} + +Value& Value::operator[](ArrayIndex index) { + JSON_ASSERT_MESSAGE( + type() == nullValue || type() == arrayValue, + "in Json::Value::operator[](ArrayIndex): requires arrayValue"); + if (type() == nullValue) + *this = Value(arrayValue); + CZString key(index); + auto it = value_.map_->lower_bound(key); + if (it != value_.map_->end() && (*it).first == key) + return (*it).second; + + ObjectValues::value_type defaultValue(key, nullSingleton()); + it = value_.map_->insert(it, defaultValue); + return (*it).second; +} + +Value& Value::operator[](int index) { + JSON_ASSERT_MESSAGE( + index >= 0, + "in Json::Value::operator[](int index): index cannot be negative"); + return (*this)[ArrayIndex(index)]; +} + +const Value& Value::operator[](ArrayIndex index) const { + JSON_ASSERT_MESSAGE( + type() == nullValue || type() == arrayValue, + "in Json::Value::operator[](ArrayIndex)const: requires arrayValue"); + if (type() == nullValue) + return nullSingleton(); + CZString key(index); + ObjectValues::const_iterator it = value_.map_->find(key); + if (it == value_.map_->end()) + return nullSingleton(); + return (*it).second; +} + +const Value& Value::operator[](int index) const { + JSON_ASSERT_MESSAGE( + index >= 0, + "in Json::Value::operator[](int index) const: index cannot be negative"); + return (*this)[ArrayIndex(index)]; +} + +void Value::initBasic(ValueType type, bool allocated) { + setType(type); + setIsAllocated(allocated); + comments_ = Comments{}; + start_ = 0; + limit_ = 0; +} + +void Value::dupPayload(const Value& other) { + setType(other.type()); + setIsAllocated(false); + switch (type()) { + case nullValue: + case intValue: + case uintValue: + case realValue: + case booleanValue: + value_ = other.value_; + break; + case stringValue: + if (other.value_.string_ && other.isAllocated()) { + unsigned len; + char const* str; + decodePrefixedString(other.isAllocated(), other.value_.string_, &len, + &str); + value_.string_ = duplicateAndPrefixStringValue(str, len); + setIsAllocated(true); + } else { + value_.string_ = other.value_.string_; + } + break; + case arrayValue: + case objectValue: + value_.map_ = new ObjectValues(*other.value_.map_); + break; + default: + JSON_ASSERT_UNREACHABLE; + } +} + +void Value::releasePayload() { + switch (type()) { + case nullValue: + case intValue: + case uintValue: + case realValue: + case booleanValue: + break; + case stringValue: + if (isAllocated()) + releasePrefixedStringValue(value_.string_); + break; + case arrayValue: + case objectValue: + delete value_.map_; + break; + default: + JSON_ASSERT_UNREACHABLE; + } +} + +void Value::dupMeta(const Value& other) { + comments_ = other.comments_; + start_ = other.start_; + limit_ = other.limit_; +} + +// Access an object value by name, create a null member if it does not exist. +// @pre Type of '*this' is object or null. +// @param key is null-terminated. +Value& Value::resolveReference(const char* key) { + JSON_ASSERT_MESSAGE( + type() == nullValue || type() == objectValue, + "in Json::Value::resolveReference(): requires objectValue"); + if (type() == nullValue) + *this = Value(objectValue); + CZString actualKey(key, static_cast(strlen(key)), + CZString::noDuplication); // NOTE! + auto it = value_.map_->lower_bound(actualKey); + if (it != value_.map_->end() && (*it).first == actualKey) + return (*it).second; + + ObjectValues::value_type defaultValue(actualKey, nullSingleton()); + it = value_.map_->insert(it, defaultValue); + Value& value = (*it).second; + return value; +} + +// @param key is not null-terminated. +Value& Value::resolveReference(char const* key, char const* end) { + JSON_ASSERT_MESSAGE( + type() == nullValue || type() == objectValue, + "in Json::Value::resolveReference(key, end): requires objectValue"); + if (type() == nullValue) + *this = Value(objectValue); + CZString actualKey(key, static_cast(end - key), + CZString::duplicateOnCopy); + auto it = value_.map_->lower_bound(actualKey); + if (it != value_.map_->end() && (*it).first == actualKey) + return (*it).second; + + ObjectValues::value_type defaultValue(actualKey, nullSingleton()); + it = value_.map_->insert(it, defaultValue); + Value& value = (*it).second; + return value; +} + +Value Value::get(ArrayIndex index, const Value& defaultValue) const { + const Value* value = &((*this)[index]); + return value == &nullSingleton() ? defaultValue : *value; +} + +bool Value::isValidIndex(ArrayIndex index) const { return index < size(); } + +Value const* Value::find(char const* begin, char const* end) const { + JSON_ASSERT_MESSAGE(type() == nullValue || type() == objectValue, + "in Json::Value::find(begin, end): requires " + "objectValue or nullValue"); + if (type() == nullValue) + return nullptr; + CZString actualKey(begin, static_cast(end - begin), + CZString::noDuplication); + ObjectValues::const_iterator it = value_.map_->find(actualKey); + if (it == value_.map_->end()) + return nullptr; + return &(*it).second; +} +Value* Value::demand(char const* begin, char const* end) { + JSON_ASSERT_MESSAGE(type() == nullValue || type() == objectValue, + "in Json::Value::demand(begin, end): requires " + "objectValue or nullValue"); + return &resolveReference(begin, end); +} +const Value& Value::operator[](const char* key) const { + Value const* found = find(key, key + strlen(key)); + if (!found) + return nullSingleton(); + return *found; +} +Value const& Value::operator[](const String& key) const { + Value const* found = find(key.data(), key.data() + key.length()); + if (!found) + return nullSingleton(); + return *found; +} + +Value& Value::operator[](const char* key) { + return resolveReference(key, key + strlen(key)); +} + +Value& Value::operator[](const String& key) { + return resolveReference(key.data(), key.data() + key.length()); +} + +Value& Value::operator[](const StaticString& key) { + return resolveReference(key.c_str()); +} + +Value& Value::append(const Value& value) { return append(Value(value)); } + +Value& Value::append(Value&& value) { + JSON_ASSERT_MESSAGE(type() == nullValue || type() == arrayValue, + "in Json::Value::append: requires arrayValue"); + if (type() == nullValue) { + *this = Value(arrayValue); + } + return this->value_.map_->emplace(size(), std::move(value)).first->second; +} + +bool Value::insert(ArrayIndex index, const Value& newValue) { + return insert(index, Value(newValue)); +} + +bool Value::insert(ArrayIndex index, Value&& newValue) { + JSON_ASSERT_MESSAGE(type() == nullValue || type() == arrayValue, + "in Json::Value::insert: requires arrayValue"); + ArrayIndex length = size(); + if (index > length) { + return false; + } + for (ArrayIndex i = length; i > index; i--) { + (*this)[i] = std::move((*this)[i - 1]); + } + (*this)[index] = std::move(newValue); + return true; +} + +Value Value::get(char const* begin, char const* end, + Value const& defaultValue) const { + Value const* found = find(begin, end); + return !found ? defaultValue : *found; +} +Value Value::get(char const* key, Value const& defaultValue) const { + return get(key, key + strlen(key), defaultValue); +} +Value Value::get(String const& key, Value const& defaultValue) const { + return get(key.data(), key.data() + key.length(), defaultValue); +} + +bool Value::removeMember(const char* begin, const char* end, Value* removed) { + if (type() != objectValue) { + return false; + } + CZString actualKey(begin, static_cast(end - begin), + CZString::noDuplication); + auto it = value_.map_->find(actualKey); + if (it == value_.map_->end()) + return false; + if (removed) + *removed = std::move(it->second); + value_.map_->erase(it); + return true; +} +bool Value::removeMember(const char* key, Value* removed) { + return removeMember(key, key + strlen(key), removed); +} +bool Value::removeMember(String const& key, Value* removed) { + return removeMember(key.data(), key.data() + key.length(), removed); +} +void Value::removeMember(const char* key) { + JSON_ASSERT_MESSAGE(type() == nullValue || type() == objectValue, + "in Json::Value::removeMember(): requires objectValue"); + if (type() == nullValue) + return; + + CZString actualKey(key, unsigned(strlen(key)), CZString::noDuplication); + value_.map_->erase(actualKey); +} +void Value::removeMember(const String& key) { removeMember(key.c_str()); } + +bool Value::removeIndex(ArrayIndex index, Value* removed) { + if (type() != arrayValue) { + return false; + } + CZString key(index); + auto it = value_.map_->find(key); + if (it == value_.map_->end()) { + return false; + } + if (removed) + *removed = it->second; + ArrayIndex oldSize = size(); + // shift left all items left, into the place of the "removed" + for (ArrayIndex i = index; i < (oldSize - 1); ++i) { + CZString keey(i); + (*value_.map_)[keey] = (*this)[i + 1]; + } + // erase the last one ("leftover") + CZString keyLast(oldSize - 1); + auto itLast = value_.map_->find(keyLast); + value_.map_->erase(itLast); + return true; +} + +bool Value::isMember(char const* begin, char const* end) const { + Value const* value = find(begin, end); + return nullptr != value; +} +bool Value::isMember(char const* key) const { + return isMember(key, key + strlen(key)); +} +bool Value::isMember(String const& key) const { + return isMember(key.data(), key.data() + key.length()); +} + +Value::Members Value::getMemberNames() const { + JSON_ASSERT_MESSAGE( + type() == nullValue || type() == objectValue, + "in Json::Value::getMemberNames(), value must be objectValue"); + if (type() == nullValue) + return Value::Members(); + Members members; + members.reserve(value_.map_->size()); + ObjectValues::const_iterator it = value_.map_->begin(); + ObjectValues::const_iterator itEnd = value_.map_->end(); + for (; it != itEnd; ++it) { + members.push_back(String((*it).first.data(), (*it).first.length())); + } + return members; +} + +static bool IsIntegral(double d) { + double integral_part; + return modf(d, &integral_part) == 0.0; +} + +bool Value::isNull() const { return type() == nullValue; } + +bool Value::isBool() const { return type() == booleanValue; } + +bool Value::isInt() const { + switch (type()) { + case intValue: +#if defined(JSON_HAS_INT64) + return value_.int_ >= minInt && value_.int_ <= maxInt; +#else + return true; +#endif + case uintValue: + return value_.uint_ <= UInt(maxInt); + case realValue: + return value_.real_ >= minInt && value_.real_ <= maxInt && + IsIntegral(value_.real_); + default: + break; + } + return false; +} + +bool Value::isUInt() const { + switch (type()) { + case intValue: +#if defined(JSON_HAS_INT64) + return value_.int_ >= 0 && LargestUInt(value_.int_) <= LargestUInt(maxUInt); +#else + return value_.int_ >= 0; +#endif + case uintValue: +#if defined(JSON_HAS_INT64) + return value_.uint_ <= maxUInt; +#else + return true; +#endif + case realValue: + return value_.real_ >= 0 && value_.real_ <= maxUInt && + IsIntegral(value_.real_); + default: + break; + } + return false; +} + +bool Value::isInt64() const { +#if defined(JSON_HAS_INT64) + switch (type()) { + case intValue: + return true; + case uintValue: + return value_.uint_ <= UInt64(maxInt64); + case realValue: + // Note that maxInt64 (= 2^63 - 1) is not exactly representable as a + // double, so double(maxInt64) will be rounded up to 2^63. Therefore we + // require the value to be strictly less than the limit. + return value_.real_ >= double(minInt64) && + value_.real_ < double(maxInt64) && IsIntegral(value_.real_); + default: + break; + } +#endif // JSON_HAS_INT64 + return false; +} + +bool Value::isUInt64() const { +#if defined(JSON_HAS_INT64) + switch (type()) { + case intValue: + return value_.int_ >= 0; + case uintValue: + return true; + case realValue: + // Note that maxUInt64 (= 2^64 - 1) is not exactly representable as a + // double, so double(maxUInt64) will be rounded up to 2^64. Therefore we + // require the value to be strictly less than the limit. + return value_.real_ >= 0 && value_.real_ < maxUInt64AsDouble && + IsIntegral(value_.real_); + default: + break; + } +#endif // JSON_HAS_INT64 + return false; +} + +bool Value::isIntegral() const { + switch (type()) { + case intValue: + case uintValue: + return true; + case realValue: +#if defined(JSON_HAS_INT64) + // Note that maxUInt64 (= 2^64 - 1) is not exactly representable as a + // double, so double(maxUInt64) will be rounded up to 2^64. Therefore we + // require the value to be strictly less than the limit. + return value_.real_ >= double(minInt64) && + value_.real_ < maxUInt64AsDouble && IsIntegral(value_.real_); +#else + return value_.real_ >= minInt && value_.real_ <= maxUInt && + IsIntegral(value_.real_); +#endif // JSON_HAS_INT64 + default: + break; + } + return false; +} + +bool Value::isDouble() const { + return type() == intValue || type() == uintValue || type() == realValue; +} + +bool Value::isNumeric() const { return isDouble(); } + +bool Value::isString() const { return type() == stringValue; } + +bool Value::isArray() const { return type() == arrayValue; } + +bool Value::isObject() const { return type() == objectValue; } + +Value::Comments::Comments(const Comments& that) + : ptr_{cloneUnique(that.ptr_)} {} + +Value::Comments::Comments(Comments&& that) noexcept + : ptr_{std::move(that.ptr_)} {} + +Value::Comments& Value::Comments::operator=(const Comments& that) { + ptr_ = cloneUnique(that.ptr_); + return *this; +} + +Value::Comments& Value::Comments::operator=(Comments&& that) noexcept { + ptr_ = std::move(that.ptr_); + return *this; +} + +bool Value::Comments::has(CommentPlacement slot) const { + return ptr_ && !(*ptr_)[slot].empty(); +} + +String Value::Comments::get(CommentPlacement slot) const { + if (!ptr_) + return {}; + return (*ptr_)[slot]; +} + +void Value::Comments::set(CommentPlacement slot, String comment) { + if (slot >= CommentPlacement::numberOfCommentPlacement) + return; + if (!ptr_) + ptr_ = std::unique_ptr(new Array()); + (*ptr_)[slot] = std::move(comment); +} + +void Value::setComment(String comment, CommentPlacement placement) { + if (!comment.empty() && (comment.back() == '\n')) { + // Always discard trailing newline, to aid indentation. + comment.pop_back(); + } + JSON_ASSERT(!comment.empty()); + JSON_ASSERT_MESSAGE( + comment[0] == '\0' || comment[0] == '/', + "in Json::Value::setComment(): Comments must start with /"); + comments_.set(placement, std::move(comment)); +} + +bool Value::hasComment(CommentPlacement placement) const { + return comments_.has(placement); +} + +String Value::getComment(CommentPlacement placement) const { + return comments_.get(placement); +} + +void Value::setOffsetStart(ptrdiff_t start) { start_ = start; } + +void Value::setOffsetLimit(ptrdiff_t limit) { limit_ = limit; } + +ptrdiff_t Value::getOffsetStart() const { return start_; } + +ptrdiff_t Value::getOffsetLimit() const { return limit_; } + +String Value::toStyledString() const { + StreamWriterBuilder builder; + + String out = this->hasComment(commentBefore) ? "\n" : ""; + out += Json::writeString(builder, *this); + out += '\n'; + + return out; +} + +Value::const_iterator Value::begin() const { + switch (type()) { + case arrayValue: + case objectValue: + if (value_.map_) + return const_iterator(value_.map_->begin()); + break; + default: + break; + } + return {}; +} + +Value::const_iterator Value::end() const { + switch (type()) { + case arrayValue: + case objectValue: + if (value_.map_) + return const_iterator(value_.map_->end()); + break; + default: + break; + } + return {}; +} + +Value::iterator Value::begin() { + switch (type()) { + case arrayValue: + case objectValue: + if (value_.map_) + return iterator(value_.map_->begin()); + break; + default: + break; + } + return iterator(); +} + +Value::iterator Value::end() { + switch (type()) { + case arrayValue: + case objectValue: + if (value_.map_) + return iterator(value_.map_->end()); + break; + default: + break; + } + return iterator(); +} + +// class PathArgument +// ////////////////////////////////////////////////////////////////// + +PathArgument::PathArgument() = default; + +PathArgument::PathArgument(ArrayIndex index) + : index_(index), kind_(kindIndex) {} + +PathArgument::PathArgument(const char* key) : key_(key), kind_(kindKey) {} + +PathArgument::PathArgument(String key) : key_(std::move(key)), kind_(kindKey) {} + +// class Path +// ////////////////////////////////////////////////////////////////// + +Path::Path(const String& path, const PathArgument& a1, const PathArgument& a2, + const PathArgument& a3, const PathArgument& a4, + const PathArgument& a5) { + InArgs in; + in.reserve(5); + in.push_back(&a1); + in.push_back(&a2); + in.push_back(&a3); + in.push_back(&a4); + in.push_back(&a5); + makePath(path, in); +} + +void Path::makePath(const String& path, const InArgs& in) { + const char* current = path.c_str(); + const char* end = current + path.length(); + auto itInArg = in.begin(); + while (current != end) { + if (*current == '[') { + ++current; + if (*current == '%') + addPathInArg(path, in, itInArg, PathArgument::kindIndex); + else { + ArrayIndex index = 0; + for (; current != end && *current >= '0' && *current <= '9'; ++current) + index = index * 10 + ArrayIndex(*current - '0'); + args_.push_back(index); + } + if (current == end || *++current != ']') + invalidPath(path, int(current - path.c_str())); + } else if (*current == '%') { + addPathInArg(path, in, itInArg, PathArgument::kindKey); + ++current; + } else if (*current == '.' || *current == ']') { + ++current; + } else { + const char* beginName = current; + while (current != end && !strchr("[.", *current)) + ++current; + args_.push_back(String(beginName, current)); + } + } +} + +void Path::addPathInArg(const String& /*path*/, const InArgs& in, + InArgs::const_iterator& itInArg, + PathArgument::Kind kind) { + if (itInArg == in.end()) { + // Error: missing argument %d + } else if ((*itInArg)->kind_ != kind) { + // Error: bad argument type + } else { + args_.push_back(**itInArg++); + } +} + +void Path::invalidPath(const String& /*path*/, int /*location*/) { + // Error: invalid path. +} + +const Value& Path::resolve(const Value& root) const { + const Value* node = &root; + for (const auto& arg : args_) { + if (arg.kind_ == PathArgument::kindIndex) { + if (!node->isArray() || !node->isValidIndex(arg.index_)) { + // Error: unable to resolve path (array value expected at position... ) + return Value::nullSingleton(); + } + node = &((*node)[arg.index_]); + } else if (arg.kind_ == PathArgument::kindKey) { + if (!node->isObject()) { + // Error: unable to resolve path (object value expected at position...) + return Value::nullSingleton(); + } + node = &((*node)[arg.key_]); + if (node == &Value::nullSingleton()) { + // Error: unable to resolve path (object has no member named '' at + // position...) + return Value::nullSingleton(); + } + } + } + return *node; +} + +Value Path::resolve(const Value& root, const Value& defaultValue) const { + const Value* node = &root; + for (const auto& arg : args_) { + if (arg.kind_ == PathArgument::kindIndex) { + if (!node->isArray() || !node->isValidIndex(arg.index_)) + return defaultValue; + node = &((*node)[arg.index_]); + } else if (arg.kind_ == PathArgument::kindKey) { + if (!node->isObject()) + return defaultValue; + node = &((*node)[arg.key_]); + if (node == &Value::nullSingleton()) + return defaultValue; + } + } + return *node; +} + +Value& Path::make(Value& root) const { + Value* node = &root; + for (const auto& arg : args_) { + if (arg.kind_ == PathArgument::kindIndex) { + if (!node->isArray()) { + // Error: node is not an array at position ... + } + node = &((*node)[arg.index_]); + } else if (arg.kind_ == PathArgument::kindKey) { + if (!node->isObject()) { + // Error: node is not an object at position... + } + node = &((*node)[arg.key_]); + } + } + return *node; +} + +} // namespace Json -- cgit v1.2.3