intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 167 insertions, 0 deletions

diff --git a/contrib/libs/poco/Foundation/src/VarIterator.cpp b/contrib/libs/poco/Foundation/src/VarIterator.cpp
new file mode 100644
index 0000000000..d816c23c4a
--- /dev/null
+++ b/contrib/libs/poco/Foundation/src/VarIterator.cpp
@@ -0,0 +1,167 @@
+//
+// VarIterator.cpp
+//
+// Library: Foundation
+// Package: Dynamic
+// Module:  VarIterator
+//
+// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/Dynamic/VarIterator.h"
+#include "Poco/Dynamic/Var.h"
+#include "Poco/Dynamic/Struct.h"
+#undef min
+#undef max
+#include <limits>
+
+
+namespace Poco {
+namespace Dynamic {
+
+
+const std::size_t VarIterator::POSITION_END = std::numeric_limits<std::size_t>::max();
+
+
+VarIterator::VarIterator(Var* pVar, bool positionEnd): 
+	_pVar(pVar),
+	_position(positionEnd ? POSITION_END : 0)
+{
+}
+
+
+VarIterator::VarIterator(const VarIterator& other):
+	_pVar(other._pVar),
+	_position(other._position)
+{
+}
+
+
+VarIterator::~VarIterator()
+{
+}
+
+
+VarIterator& VarIterator::operator = (const VarIterator& other)
+{
+	VarIterator tmp(other);
+	swap(tmp);
+	return *this;
+}
+
+
+void VarIterator::swap(VarIterator& other)
+{
+	using std::swap;
+	
+	swap(_pVar, other._pVar);
+	swap(_position, other._position);
+}
+
+
+void VarIterator::increment() const
+{
+	if (POSITION_END == _position)
+		throw RangeException("End of iterator reached.");
+
+	if (_position < _pVar->size() - 1)
+		++_position;
+	else
+		_position = POSITION_END;
+}
+
+
+void VarIterator::decrement() const
+{
+	if (0 == _position)
+		throw RangeException("Beginning of iterator reached.");
+	else if (POSITION_END == _position)
+		_position = _pVar->size() - 1;
+	else
+		--_position;
+}
+
+
+void VarIterator::setPosition(std::size_t pos) const
+{
+	if (_position == pos) return;
+
+	if (pos < _pVar->size())
+		_position = pos;
+	else if (pos == _pVar->size())
+		_position = POSITION_END;
+	else
+		throw RangeException("Invalid position argument.");
+}
+
+
+Var& VarIterator::operator * () const
+{
+	if (POSITION_END == _position)
+		throw InvalidAccessException("End of iterator reached.");
+
+	return _pVar->operator[](_position);
+}
+
+
+Var* VarIterator::operator -> () const
+{
+	if (POSITION_END == _position)
+		throw InvalidAccessException("End of iterator reached.");
+
+	return &_pVar->operator[](_position);
+}
+
+
+const VarIterator& VarIterator::operator ++ () const
+{
+	increment();
+	return *this;
+}
+
+
+VarIterator VarIterator::operator ++ (int) const
+{
+	VarIterator old(*this);
+	increment();
+	return old;
+}
+
+
+const VarIterator& VarIterator::operator -- () const
+{
+	decrement();
+	return *this;
+}
+
+
+VarIterator VarIterator::operator -- (int) const
+{
+	VarIterator old(*this);
+	decrement();
+	return old;
+}
+
+
+VarIterator VarIterator::operator + (std::size_t diff) const
+{
+	VarIterator ri(*this);
+	ri.setPosition(_position + diff);
+	return ri;
+}
+
+
+VarIterator VarIterator::operator - (std::size_t diff) const
+{
+	if (diff > _position) throw RangeException("Invalid position argument.");
+	VarIterator ri(*this);
+	ri.setPosition(_position - diff);
+	return ri;
+}
+
+
+} } // namespace Poco::Dynamic