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fa3b207447
This way there shouldn't be any unused variable warnings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230010 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
877 B
C++
27 lines
877 B
C++
//===-- None.h - Simple null value for implicit construction ------*- 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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// This file provides None, an enumerator for use in implicit constructors
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// of various (usually templated) types to make such construction more
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// terse.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ADT_NONE_H
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#define LLVM_ADT_NONE_H
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namespace llvm {
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/// \brief A simple null object to allow implicit construction of Optional<T>
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/// and similar types without having to spell out the specialization's name.
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enum class NoneType { None };
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const NoneType None = None;
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}
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#endif
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