iteratorRange.h

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//
// Copyright 2025 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_EXEC_VDF_ITERATOR_RANGE_H
#define PXR_EXEC_VDF_ITERATOR_RANGE_H
 
 
#include "pxr/pxr.h"
 
#include <type_traits>
#include <utility>
 
PXR_NAMESPACE_OPEN_SCOPE
 
template<typename Iterator>
class VdfIteratorRange
{
public:
 
    using value_type =
        typename std::remove_cv<typename Iterator::value_type>::type;
 
    using iterator = Iterator;
 
    using const_iterator = Iterator;
 
    template <typename... Args>
    VdfIteratorRange(Args&&... args) :
        _begin(std::forward<Args>(args)...),
        _end(_begin) {
        _end.AdvanceToEnd();
    }
 
    VdfIteratorRange(Iterator begin, Iterator end) : _begin(begin), _end(end) {}
 
    Iterator begin() const {
        return _begin;
    }
 
    Iterator end() const {
        return _end;
    }
 
    bool IsEmpty() const {
        return _begin == _end;
    }
 
private:
 
    // The begin iterator of this range.
    Iterator _begin;
 
    // The end iterator of this range.
    Iterator _end;
 
};
 
PXR_NAMESPACE_CLOSE_SCOPE
 
#endif