//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SUPPORT_TYPE_ID_H
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#define SUPPORT_TYPE_ID_H
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#include <functional>
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#include <typeinfo>
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#include <string>
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#include <cstdio>
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#include <cassert>
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#include "test_macros.h"
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#include "demangle.h"
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#if TEST_STD_VER < 11
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#error This header requires C++11 or greater
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#endif
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// TypeID - Represent a unique identifier for a type. TypeID allows equality
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// comparisons between different types.
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struct TypeID {
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friend bool operator==(TypeID const& LHS, TypeID const& RHS)
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{return LHS.m_id == RHS.m_id; }
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friend bool operator!=(TypeID const& LHS, TypeID const& RHS)
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{return LHS.m_id != RHS.m_id; }
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std::string name() const {
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return demangle(m_id);
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}
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void dump() const {
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std::string s = name();
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std::printf("TypeID: %s\n", s.c_str());
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}
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private:
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explicit constexpr TypeID(const char* xid) : m_id(xid) {}
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TypeID(const TypeID&) = delete;
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TypeID& operator=(TypeID const&) = delete;
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const char* const m_id;
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template <class T> friend TypeID const& makeTypeIDImp();
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};
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// makeTypeID - Return the TypeID for the specified type 'T'.
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template <class T>
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inline TypeID const& makeTypeIDImp() {
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static const TypeID id(typeid(T).name());
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return id;
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}
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template <class T>
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struct TypeWrapper {};
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template <class T>
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inline TypeID const& makeTypeID() {
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return makeTypeIDImp<TypeWrapper<T>>();
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}
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template <class ...Args>
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struct ArgumentListID {};
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// makeArgumentID - Create and return a unique identifier for a given set
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// of arguments.
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template <class ...Args>
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inline TypeID const& makeArgumentID() {
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return makeTypeIDImp<ArgumentListID<Args...>>();
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}
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// COMPARE_TYPEID(...) is a utility macro for generating diagnostics when
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// two typeid's are expected to be equal
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#define COMPARE_TYPEID(LHS, RHS) CompareTypeIDVerbose(#LHS, LHS, #RHS, RHS)
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inline bool CompareTypeIDVerbose(const char* LHSString, TypeID const* LHS,
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const char* RHSString, TypeID const* RHS) {
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if (*LHS == *RHS)
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return true;
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std::printf("TypeID's not equal:\n");
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std::printf("%s: %s\n----------\n%s: %s\n",
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LHSString, LHS->name().c_str(),
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RHSString, RHS->name().c_str());
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return false;
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}
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#endif // SUPPORT_TYPE_ID_H
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