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Diffstat (limited to 'include/Support/DenseMap.h')
-rw-r--r-- | include/Support/DenseMap.h | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/include/Support/DenseMap.h b/include/Support/DenseMap.h deleted file mode 100644 index 4f6dc91..0000000 --- a/include/Support/DenseMap.h +++ /dev/null @@ -1,73 +0,0 @@ -//===- DenseMap.h - A dense map implmentation -------------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file was developed by the LLVM research group and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements a dense map. A dense map template takes two -// types. The first is the mapped type and the second is a functor -// that maps its argument to a size_t. On instantiation a "null" value -// can be provided to be used as a "does not exist" indicator in the -// map. A member function grow() is provided that given the value of -// the maximally indexed key (the argument of the functor) makes sure -// the map has enough space for it. -// -//===----------------------------------------------------------------------===// - -#ifndef SUPPORT_DENSEMAP_H -#define SUPPORT_DENSEMAP_H - -#include <vector> - -namespace llvm { - - struct IdentityFunctor : std::unary_function<unsigned, unsigned> { - unsigned operator()(unsigned Index) const { - return Index; - } - }; - - template <typename T, typename ToIndexT = IdentityFunctor> - class DenseMap { - typedef typename ToIndexT::argument_type IndexT; - typedef std::vector<T> StorageT; - StorageT storage_; - T nullVal_; - ToIndexT toIndex_; - - public: - DenseMap() : nullVal_(T()) { } - - explicit DenseMap(const T& val) : nullVal_(val) { } - - typename StorageT::reference operator[](IndexT n) { - assert(toIndex_(n) < storage_.size() && "index out of bounds!"); - return storage_[toIndex_(n)]; - } - - typename StorageT::const_reference operator[](IndexT n) const { - assert(toIndex_(n) < storage_.size() && "index out of bounds!"); - return storage_[toIndex_(n)]; - } - - void clear() { - storage_.clear(); - } - - void grow(IndexT n) { - unsigned NewSize = toIndex_(n) + 1; - if (NewSize > storage_.size()) - storage_.resize(NewSize, nullVal_); - } - - typename StorageT::size_type size() const { - return storage_.size(); - } - }; - -} // End llvm namespace - -#endif |