Persson-dev
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Reviewed-on: #14 Co-authored-by: Persson-dev <sim16.prib@gmail.com> Co-committed-by: Persson-dev <sim16.prib@gmail.com>
57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
// infix_iterator.h
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//
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// Lifted from Jerry Coffin's 's prefix_ostream_iterator
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#pragma once
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#include <ostream>
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#include <sp/protocol/Field.h>
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namespace sp {
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template <class T, class charT = char, class traits = std::char_traits<charT>>
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class OstreamFieldIterator {
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private:
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std::basic_ostream<charT, traits>* m_Os;
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std::string m_Delimiter;
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bool m_FirstElem;
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public:
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using iterator_category = std::output_iterator_tag;
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using value_type = void;
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using difference_type = void;
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using pointer = void;
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using reference = void;
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using char_type = charT;
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using traits_type = traits;
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using ostream_type = std::basic_ostream<charT, traits>;
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OstreamFieldIterator(ostream_type& a_Stream) : m_Os(&a_Stream), m_Delimiter(0), m_FirstElem(true) {}
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OstreamFieldIterator(ostream_type& a_Stream, std::string&& a_Delimiter) :
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m_Os(&a_Stream), m_Delimiter(std::move(a_Delimiter)), m_FirstElem(true) {}
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auto& operator=(const T& item) {
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// Here's the only real change from ostream_iterator:
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// Normally, the '*m_Os << item;' would come before the 'if'.
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if (!m_FirstElem && !m_Delimiter.empty())
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*m_Os << m_Delimiter;
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*m_Os << sp::PrintableField<T>(item);
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m_FirstElem = false;
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return *this;
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}
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auto& operator*() {
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return *this;
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}
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auto& operator++() {
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return *this;
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}
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auto& operator++(int) {
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return *this;
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}
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};
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} // namespace sp
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