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// Copyright 2007-2010 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
// included by json_value.cpp
namespace Json
{
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// class ValueIteratorBase
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
ValueIteratorBase::ValueIteratorBase() : current_() {
}
ValueIteratorBase::ValueIteratorBase(
const Value::ObjectValues::iterator& current)
: current_(current), isNull_(false) {
}
Value& ValueIteratorBase::deref() {
return current_->second;
}
const Value& ValueIteratorBase::deref() const {
return current_->second;
}
void ValueIteratorBase::increment() {
++current_;
}
void ValueIteratorBase::decrement() {
--current_;
}
ValueIteratorBase::difference_type
ValueIteratorBase::computeDistance(const SelfType& other) const {
// Iterator for null value are initialized using the default
// constructor, which initialize current_ to the default
// std::map::iterator. As begin() and end() are two instance
// of the default std::map::iterator, they can not be compared.
// To allow this, we handle this comparison specifically.
if (isNull_ && other.isNull_) {
return 0;
}
// Usage of std::distance is not portable (does not compile with Sun Studio 12
// RogueWave STL,
// which is the one used by default).
// Using a portable hand-made version for non random iterator instead:
// return difference_type( std::distance( current_, other.current_ ) );
difference_type myDistance = 0;
for (Value::ObjectValues::iterator it = current_; it != other.current_; ++it) {
++myDistance;
}
return myDistance;
}
bool ValueIteratorBase::isEqual(const SelfType& other) const {
if (isNull_) {
return other.isNull_;
}
return current_ == other.current_;
}
void ValueIteratorBase::copy(const SelfType& other) {
current_ = other.current_;
isNull_ = other.isNull_;
}
Value ValueIteratorBase::key() const {
const Value::CZString czstring = (*current_).first;
if (czstring.data()) {
if (czstring.isStaticString()) {
return Value(StaticString(czstring.data()));
}
return Value(czstring.data(), czstring.data() + czstring.length());
}
return Value(czstring.index());
}
UInt ValueIteratorBase::index() const {
const Value::CZString czstring = (*current_).first;
if (!czstring.data()) {
return czstring.index();
}
return Value::UInt(-1);
}
#ifdef JSONCPP_HAS_STRING_VIEW
std::string_view ValueIteratorBase::name() const {
char const* keey;
char const* end;
keey = memberName(&end);
if (!keey) {
return std::string_view();
}
return std::string_view(keey, end - keey);
}
#else
StringContainer ValueIteratorBase::name() const {
char const* keey;
char const* end;
keey = memberName(&end);
if (!keey) {
return StringContainer();
}
return StringContainer(keey, end);
}
#endif
#ifdef JSONCPP_HAS_STRING_VIEW
std::string_view ValueIteratorBase::memberName() const {
auto& string = (*current_).first;
if (!string.data()) {
return {};
}
return std::string_view(string.data(), string.length());
}
#endif
char const* ValueIteratorBase::memberName(char const** end) const {
const char* cname = (*current_).first.data();
if (!cname) {
*end = nullptr;
return nullptr;
}
*end = cname + (*current_).first.length();
return cname;
}
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// class ValueConstIterator
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
ValueConstIterator::ValueConstIterator() = default;
ValueConstIterator::ValueConstIterator(
const Value::ObjectValues::iterator& current)
: ValueIteratorBase(current) {
}
ValueConstIterator::ValueConstIterator(ValueIterator const& other)
: ValueIteratorBase(other) {
}
ValueConstIterator& ValueConstIterator::
operator=(const ValueIteratorBase& other) {
copy(other);
return *this;
}
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// class ValueIterator
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////
ValueIterator::ValueIterator() = default;
ValueIterator::ValueIterator(const Value::ObjectValues::iterator& current)
: ValueIteratorBase(current) {
}
ValueIterator::ValueIterator(const ValueConstIterator& other)
: ValueIteratorBase(other) {
throwRuntimeError("ConstIterator to Iterator should never be allowed.");
}
ValueIterator::ValueIterator(const ValueIterator& other) = default;
ValueIterator& ValueIterator::operator=(const SelfType& other) {
copy(other);
return *this;
}
} // namespace Json
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