[llvm] r203460 - Removing llvm::distance and llvm::copy for iterator_range based on post-commit review feedback. Adding an explicit range-based constructor to SmallVector, which supersedes the llvm::copy functionality.
Aaron Ballman
aaron at aaronballman.com
Mon Mar 10 06:43:46 PDT 2014
Author: aaronballman
Date: Mon Mar 10 08:43:46 2014
New Revision: 203460
URL: http://llvm.org/viewvc/llvm-project?rev=203460&view=rev
Log:
Removing llvm::distance and llvm::copy for iterator_range based on post-commit review feedback. Adding an explicit range-based constructor to SmallVector, which supersedes the llvm::copy functionality.
Modified:
llvm/trunk/include/llvm/ADT/SmallVector.h
llvm/trunk/include/llvm/ADT/iterator_range.h
Modified: llvm/trunk/include/llvm/ADT/SmallVector.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/SmallVector.h?rev=203460&r1=203459&r2=203460&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/SmallVector.h (original)
+++ llvm/trunk/include/llvm/ADT/SmallVector.h Mon Mar 10 08:43:46 2014
@@ -14,6 +14,7 @@
#ifndef LLVM_ADT_SMALLVECTOR_H
#define LLVM_ADT_SMALLVECTOR_H
+#include "llvm/ADT/iterator_range.h"
#include "llvm/Support/AlignOf.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/MathExtras.h"
@@ -870,6 +871,12 @@ public:
this->append(S, E);
}
+ template <typename RangeTy>
+ explicit SmallVector(const llvm::iterator_range<RangeTy> R)
+ : SmallVectorImpl<T>(N) {
+ this->append(R.begin(), R.end());
+ }
+
SmallVector(const SmallVector &RHS) : SmallVectorImpl<T>(N) {
if (!RHS.empty())
SmallVectorImpl<T>::operator=(RHS);
Modified: llvm/trunk/include/llvm/ADT/iterator_range.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ADT/iterator_range.h?rev=203460&r1=203459&r2=203460&view=diff
==============================================================================
--- llvm/trunk/include/llvm/ADT/iterator_range.h (original)
+++ llvm/trunk/include/llvm/ADT/iterator_range.h Mon Mar 10 08:43:46 2014
@@ -19,17 +19,10 @@
#ifndef LLVM_ADT_ITERATOR_RANGE_H
#define LLVM_ADT_ITERATOR_RANGE_H
-#include <algorithm>
-#include <iterator>
#include <utility>
namespace llvm {
-template <typename Range>
-struct range_traits {
- typedef typename Range::difference_type difference_type;
-};
-
/// \brief A range adaptor for a pair of iterators.
///
/// This just wraps two iterators into a range-compatible interface. Nothing
@@ -39,10 +32,6 @@ class iterator_range {
IteratorT begin_iterator, end_iterator;
public:
- // FIXME: We should be using iterator_traits to determine the
- // difference_type, but most of our iterators do not expose anything like it.
- typedef int difference_type;
-
iterator_range() {}
iterator_range(IteratorT begin_iterator, IteratorT end_iterator)
: begin_iterator(std::move(begin_iterator)),
@@ -51,20 +40,6 @@ public:
IteratorT begin() const { return begin_iterator; }
IteratorT end() const { return end_iterator; }
};
-
-/// \brief Determine the distance between the end() and begin() iterators of
-/// a range. Analogous to std::distance().
-template <class Range>
-typename range_traits<Range>::difference_type distance(Range R) {
- return std::distance(R.begin(), R.end());
-}
-
-/// \brief Copies members of a range into the output iterator provided.
-/// Analogous to std::copy.
-template <class Range, class OutputIterator>
-OutputIterator copy(Range In, OutputIterator Result) {
- return std::copy(In.begin(), In.end(), Result);
-}
}
#endif
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