mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
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163 lines
4.9 KiB
C++
163 lines
4.9 KiB
C++
// Copyright 2007-2010 Baptiste Lepilleur
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// Distributed under MIT license, or public domain if desired and
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// recognized in your jurisdiction.
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// See file LICENSE for detail or copy at http://jsoncpp.sourceforge.net/LICENSE
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// included by json_value.cpp
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namespace Json {
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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// class ValueIteratorBase
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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ValueIteratorBase::ValueIteratorBase()
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: current_(), isNull_(true) {
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}
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ValueIteratorBase::ValueIteratorBase(
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const Value::ObjectValues::iterator& current)
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: current_(current), isNull_(false) {}
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Value& ValueIteratorBase::deref() const {
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return current_->second;
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}
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void ValueIteratorBase::increment() {
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++current_;
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}
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void ValueIteratorBase::decrement() {
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--current_;
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}
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ValueIteratorBase::difference_type
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ValueIteratorBase::computeDistance(const SelfType& other) const {
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#ifdef JSON_USE_CPPTL_SMALLMAP
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return other.current_ - current_;
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#else
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// Iterator for null value are initialized using the default
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// constructor, which initialize current_ to the default
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// std::map::iterator. As begin() and end() are two instance
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// of the default std::map::iterator, they can not be compared.
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// To allow this, we handle this comparison specifically.
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if (isNull_ && other.isNull_) {
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return 0;
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}
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// Usage of std::distance is not portable (does not compile with Sun Studio 12
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// RogueWave STL,
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// which is the one used by default).
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// Using a portable hand-made version for non random iterator instead:
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// return difference_type( std::distance( current_, other.current_ ) );
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difference_type myDistance = 0;
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for (Value::ObjectValues::iterator it = current_; it != other.current_;
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++it) {
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++myDistance;
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}
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return myDistance;
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#endif
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}
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bool ValueIteratorBase::isEqual(const SelfType& other) const {
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if (isNull_) {
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return other.isNull_;
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}
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return current_ == other.current_;
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}
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void ValueIteratorBase::copy(const SelfType& other) {
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current_ = other.current_;
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isNull_ = other.isNull_;
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}
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Value ValueIteratorBase::key() const {
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const Value::CZString czstring = (*current_).first;
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if (czstring.data()) {
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if (czstring.isStaticString())
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return Value(StaticString(czstring.data()));
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return Value(czstring.data(), czstring.data() + czstring.length());
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}
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return Value(czstring.index());
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}
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UInt ValueIteratorBase::index() const {
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const Value::CZString czstring = (*current_).first;
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if (!czstring.data())
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return czstring.index();
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return Value::UInt(-1);
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}
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std::string ValueIteratorBase::name() const {
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char const* keey;
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char const* end;
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keey = memberName(&end);
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if (!keey) return std::string();
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return std::string(keey, end);
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}
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char const* ValueIteratorBase::memberName() const {
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const char* cname = (*current_).first.data();
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return cname ? cname : "";
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}
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char const* ValueIteratorBase::memberName(char const** end) const {
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const char* cname = (*current_).first.data();
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if (!cname) {
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*end = NULL;
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return NULL;
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}
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*end = cname + (*current_).first.length();
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return cname;
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}
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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// class ValueConstIterator
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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ValueConstIterator::ValueConstIterator() {}
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ValueConstIterator::ValueConstIterator(
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const Value::ObjectValues::iterator& current)
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: ValueIteratorBase(current) {}
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ValueConstIterator& ValueConstIterator::
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operator=(const ValueIteratorBase& other) {
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copy(other);
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return *this;
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}
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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// class ValueIterator
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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// //////////////////////////////////////////////////////////////////
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ValueIterator::ValueIterator() {}
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ValueIterator::ValueIterator(const Value::ObjectValues::iterator& current)
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: ValueIteratorBase(current) {}
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ValueIterator::ValueIterator(const ValueConstIterator& other)
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: ValueIteratorBase(other) {}
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ValueIterator::ValueIterator(const ValueIterator& other)
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: ValueIteratorBase(other) {}
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ValueIterator& ValueIterator::operator=(const SelfType& other) {
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copy(other);
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return *this;
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}
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} // namespace Json
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