mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-16 11:30:51 +00:00
6c92f6eb6a
This default constructor is a bit weird. It left the range in an invalid state. That might be reasonable so that you can construct a local iterator range and assign to it based on some logic to compute the range you want. If folks would like to support that use case, I can add it back, but in 238-odd usages none have actually wanted to do this. ;] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225592 91177308-0d34-0410-b5e6-96231b3b80d8
57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
//===- iterator_range.h - A range adaptor for iterators ---------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
/// \file
|
|
/// This provides a very simple, boring adaptor for a begin and end iterator
|
|
/// into a range type. This should be used to build range views that work well
|
|
/// with range based for loops and range based constructors.
|
|
///
|
|
/// Note that code here follows more standards-based coding conventions as it
|
|
/// is mirroring proposed interfaces for standardization.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ADT_ITERATOR_RANGE_H
|
|
#define LLVM_ADT_ITERATOR_RANGE_H
|
|
|
|
#include <utility>
|
|
|
|
namespace llvm {
|
|
|
|
/// \brief A range adaptor for a pair of iterators.
|
|
///
|
|
/// This just wraps two iterators into a range-compatible interface. Nothing
|
|
/// fancy at all.
|
|
template <typename IteratorT>
|
|
class iterator_range {
|
|
IteratorT begin_iterator, end_iterator;
|
|
|
|
public:
|
|
iterator_range(IteratorT begin_iterator, IteratorT end_iterator)
|
|
: begin_iterator(std::move(begin_iterator)),
|
|
end_iterator(std::move(end_iterator)) {}
|
|
|
|
IteratorT begin() const { return begin_iterator; }
|
|
IteratorT end() const { return end_iterator; }
|
|
};
|
|
|
|
/// \brief Convenience function for iterating over sub-ranges.
|
|
///
|
|
/// This provides a bit of syntactic sugar to make using sub-ranges
|
|
/// in for loops a bit easier. Analogous to std::make_pair().
|
|
template <class T> iterator_range<T> make_range(T x, T y) {
|
|
return iterator_range<T>(std::move(x), std::move(y));
|
|
}
|
|
|
|
template <typename T> iterator_range<T> make_range(std::pair<T, T> p) {
|
|
return iterator_range<T>(std::move(p.first), std::move(p.second));
|
|
}
|
|
}
|
|
|
|
#endif
|