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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316 91177308-0d34-0410-b5e6-96231b3b80d8
28 lines
750 B
C++
28 lines
750 B
C++
//===-- HashExtras.h - Useful functions for STL hash containers --*- C++ -*--=//
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//
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// This file contains some templates that are useful if you are working with the
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// STL Hashed containers.
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//
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// No library is required when using these functinons.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_HASHEXTRAS_H
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#define LLVM_SUPPORT_HASHEXTRAS_H
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#include <string>
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#include <hash_map>
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template <> struct hash<string> {
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size_t operator()(string const &str) const {
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return hash<char const *>()(str.c_str());
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}
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};
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// Provide a hash function for arbitrary pointers...
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template <class T> struct hash<T *> {
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inline size_t operator()(const T *Val) const { return (size_t)Val; }
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};
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#endif
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