зеркало из https://github.com/microsoft/clang-1.git
64 строки
1.6 KiB
C++
64 строки
1.6 KiB
C++
//===--- STLExtras.h - Helper STL related templates -------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Helper templates for using with the STL.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_INDEX_STLEXTRAS_H
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#define LLVM_CLANG_INDEX_STLEXTRAS_H
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namespace clang {
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namespace idx {
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/// \brief Wraps an iterator whose value_type is a pair, and provides
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/// pair's second object as the value.
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template <typename iter_type>
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class pair_value_iterator {
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iter_type I;
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public:
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typedef typename iter_type::value_type::second_type value_type;
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typedef value_type& reference;
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typedef value_type* pointer;
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typedef typename iter_type::iterator_category iterator_category;
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typedef typename iter_type::difference_type difference_type;
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pair_value_iterator() { }
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pair_value_iterator(iter_type i) : I(i) { }
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reference operator*() const { return I->second; }
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pointer operator->() const { return &I->second; }
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pair_value_iterator& operator++() {
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++I;
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return *this;
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}
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pair_value_iterator operator++(int) {
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pair_value_iterator tmp(*this);
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++(*this);
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return tmp;
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}
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friend bool operator==(pair_value_iterator L, pair_value_iterator R) {
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return L.I == R.I;
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}
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friend bool operator!=(pair_value_iterator L, pair_value_iterator R) {
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return L.I != R.I;
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}
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};
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} // end idx namespace
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} // end clang namespace
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#endif
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