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Diffstat (limited to 'include/llvm/ADT/InMemoryStruct.h')
-rw-r--r-- | include/llvm/ADT/InMemoryStruct.h | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/include/llvm/ADT/InMemoryStruct.h b/include/llvm/ADT/InMemoryStruct.h deleted file mode 100644 index a56084501a626..0000000000000 --- a/include/llvm/ADT/InMemoryStruct.h +++ /dev/null @@ -1,77 +0,0 @@ -//===- InMemoryStruct.h - Indirect Struct Access Smart Pointer --*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_ADT_INMEMORYSTRUCT_H -#define LLVM_ADT_INMEMORYSTRUCT_H - -#include <cassert> - -namespace llvm { - -/// \brief Helper object for abstracting access to an in-memory structure which -/// may require some kind of temporary storage. -/// -/// This class is designed to be used for accessing file data structures which -/// in the common case can be accessed from a direct pointer to a memory mapped -/// object, but which in some cases may require indirect access to a temporary -/// structure (which, for example, may have undergone endianness translation). -template<typename T> -class InMemoryStruct { - typedef T value_type; - typedef value_type &reference; - typedef value_type *pointer; - typedef const value_type &const_reference; - typedef const value_type *const_pointer; - - /// \brief The smart pointer target. - value_type *Target; - - /// \brief A temporary object which can be used as a target of the smart - /// pointer. - value_type Contents; - -private: - -public: - InMemoryStruct() : Target(0) {} - InMemoryStruct(reference Value) : Target(&Contents), Contents(Value) {} - InMemoryStruct(pointer Value) : Target(Value) {} - InMemoryStruct(const InMemoryStruct<T> &Value) { *this = Value; } - - void operator=(const InMemoryStruct<T> &Value) { - if (Value.Target != &Value.Contents) { - Target = Value.Target; - } else { - Target = &Contents; - Contents = Value.Contents; - } - } - - const_reference operator*() const { - assert(Target && "Cannot dereference null pointer"); - return *Target; - } - reference operator*() { - assert(Target && "Cannot dereference null pointer"); - return *Target; - } - - const_pointer operator->() const { - return Target; - } - pointer operator->() { - return Target; - } - - operator bool() const { return Target != 0; } -}; - -} - -#endif |