// Copyright 2016 Klemens Morgenstern
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_DLL_DETAIL_DEMANGLING_ITANIUM_HPP_
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#define BOOST_DLL_DETAIL_DEMANGLING_ITANIUM_HPP_
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#include <boost/dll/detail/demangling/mangled_storage_base.hpp>
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#include <iterator>
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#include <algorithm>
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#include <boost/type_traits/is_const.hpp>
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#include <boost/type_traits/is_volatile.hpp>
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#include <boost/type_traits/is_rvalue_reference.hpp>
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#include <boost/type_traits/is_lvalue_reference.hpp>
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#include <boost/type_traits/function_traits.hpp>
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namespace boost { namespace dll { namespace detail {
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class mangled_storage_impl : public mangled_storage_base
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{
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template<typename T>
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struct dummy {};
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template<typename Return, typename ...Args>
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std::vector<std::string> get_func_params(dummy<Return(Args...)>) const
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{
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return {get_name<Args>()...};
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}
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template<typename Return, typename ...Args>
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std::string get_return_type(dummy<Return(Args...)>) const
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{
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return get_name<Return>();
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}
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public:
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using mangled_storage_base::mangled_storage_base;
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struct ctor_sym
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{
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std::string C1;
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std::string C2;
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std::string C3;
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bool empty() const
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{
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return C1.empty() && C2.empty() && C3.empty();
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}
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};
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struct dtor_sym
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{
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std::string D0;
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std::string D1;
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std::string D2;
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bool empty() const
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{
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return D0.empty() && D1.empty() && D2.empty();
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}
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};
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template<typename T>
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std::string get_variable(const std::string &name) const;
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template<typename Func>
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std::string get_function(const std::string &name) const;
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template<typename Class, typename Func>
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std::string get_mem_fn(const std::string &name) const;
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template<typename Signature>
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ctor_sym get_constructor() const;
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template<typename Class>
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dtor_sym get_destructor() const;
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template<typename T>
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std::string get_type_info() const;
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template<typename T>
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std::vector<std::string> get_related() const;
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};
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namespace parser
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{
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//! declare
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template <typename... T>
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struct dummy;
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template <typename T>
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std::string parse_type_helper(const mangled_storage_impl & ms, dummy<T>*);
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template <typename... T, template <typename...> class Tn>
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std::string parse_type_helper(const mangled_storage_impl & ms, dummy<Tn<T...>>*);
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template <typename... T, template <typename...> class Tn>
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std::string parse_type(const mangled_storage_impl & ms, dummy<Tn<T...>>*);
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template <typename T>
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std::string parse_type(const mangled_storage_impl & ms, dummy<T>*);
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template <typename T1, typename T2, typename... T3>
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std::string parse_type(const mangled_storage_impl & ms, dummy<T1, T2, T3...>*);
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template <typename R, typename... Args>
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std::string parse_type(const mangled_storage_impl & ms, dummy<R(Args...)>*);
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std::string parse_type(const mangled_storage_impl & ms, dummy<>*);
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template<typename T>
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std::string
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type_name(const mangled_storage_impl &);
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//The purpose of this class template is to separate the pure type from the rule name from the target type
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template<typename T>
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struct pure_type
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{
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typedef T type;
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inline static std::string type_rule() { return ""; }
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};
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template<typename T>
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struct pure_type<T*>
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{
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typedef typename pure_type<T>::type type;
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inline static std::string type_rule()
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{
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return pure_type<T>::type_rule() + "*";
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}
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};
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template<typename T>
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struct pure_type<T const>
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{
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typedef typename pure_type<T>::type type;
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inline static std::string type_rule()
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{
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return pure_type<T>::type_rule() + " const";
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}
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};
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template<typename T>
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struct pure_type<T volatile>
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{
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typedef typename pure_type<T>::type type;
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inline static std::string type_rule()
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{
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return pure_type<T>::type_rule() + " volatile";
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}
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};
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template<typename T>
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struct pure_type<T const volatile>
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{
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typedef typename pure_type<T>::type type;
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inline static std::string type_rule()
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{
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return pure_type<T>::type_rule() + " const volatile";
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}
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};
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template<typename T>
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struct pure_type<T&>
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{
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typedef typename pure_type<T>::type type;
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inline static std::string type_rule()
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{
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return pure_type<T>::type_rule() + "&";
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}
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};
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template<typename T>
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struct pure_type<T&&>
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{
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typedef typename pure_type<T>::type type;
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inline static std::string type_rule()
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{
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return pure_type<T>::type_rule() + "&&";
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}
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};
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inline std::string const_rule_impl(true_type ) {return " const";}
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inline std::string const_rule_impl(false_type) {return "";}
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template<typename T>
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std::string const_rule() {using t = is_const<typename remove_reference<T>::type>; return const_rule_impl(t());}
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inline std::string volatile_rule_impl(true_type ) {return " volatile";}
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inline std::string volatile_rule_impl(false_type) {return "";}
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template<typename T>
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std::string volatile_rule() {using t = is_volatile<typename remove_reference<T>::type>; return volatile_rule_impl(t());}
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inline std::string reference_rule_impl(false_type, false_type) {return "";}
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inline std::string reference_rule_impl(true_type, false_type) {return "&" ;}
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inline std::string reference_rule_impl(false_type, true_type ) {return "&&";}
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template<typename T>
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std::string reference_rule() {using t_l = is_lvalue_reference<T>; using t_r = is_rvalue_reference<T>; return reference_rule_impl(t_l(), t_r());}
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//it takes a string, because it may be overloaded.
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template<typename Return, typename Arg>
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std::string arg_list(const mangled_storage_impl & ms, Return (*)(Arg))
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{
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using namespace std;
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return type_name<Arg>(ms);
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}
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template<typename Return, typename First, typename Second, typename ...Args>
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std::string arg_list(const mangled_storage_impl & ms, Return (*)(First, Second, Args...))
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{
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using next_type = Return (*)(Second, Args...);
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return type_name<First>(ms) + ", " + arg_list(ms, next_type());
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}
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template<typename Return>
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std::string arg_list(const mangled_storage_impl &, Return (*)())
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{
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return "";
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}
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//! implement
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template <typename T>
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inline std::string parse_type_helper(const mangled_storage_impl & ms, dummy<T>*) {
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return ms.get_name<T>();
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}
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template <typename... T, template <typename...> class Tn>
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inline std::string parse_type_helper(const mangled_storage_impl & ms, dummy<Tn<T...>>*) {
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using type = dummy<Tn<T...>>*;
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return parse_type(ms, type());
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}
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template <typename R, typename... Args>
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inline std::string parse_type(const mangled_storage_impl & ms, dummy<R(*)(Args...)>*) {
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using args_type = dummy<Args...>*;
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using return_type = dummy<R>*;
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return parse_type(ms, return_type()) + " (*)(" + parse_type(ms, args_type()) + ")";
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}
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template <typename R, typename... Args>
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inline std::string parse_type(const mangled_storage_impl & ms, dummy<R(Args...)>*) {
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using args_type = dummy<Args...>*;
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using return_type = dummy<R>*;
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return parse_type(ms, return_type()) + " (" + parse_type(ms, args_type()) + ")";
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}
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template <typename T>
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inline std::string parse_type(const mangled_storage_impl & ms, dummy<T>*) {
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using type = dummy<typename pure_type<T>::type>*;
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auto str = parse_type_helper(ms, type());
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return str + pure_type<T>::type_rule();
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}
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template <typename T1, typename T2, typename... T3>
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inline std::string parse_type(const mangled_storage_impl & ms, dummy<T1, T2, T3...>*) {
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using first_type = dummy<T1>*;
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using next_type = dummy<T2, T3...>*;
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return parse_type(ms, first_type()) + ", " + parse_type(ms, next_type());
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}
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template <typename... T, template <typename...> class Tn>
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inline std::string parse_type(const mangled_storage_impl & ms, dummy<Tn<T...>>*) {
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using next_type = dummy<T...>*;
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std::string str = ms.get_name<Tn<T...>>();
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auto frist = str.find_first_of("<");
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std::string template_name = str.substr(0, frist);
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std::string args_name = parse_type(ms, next_type());
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char last_ch = args_name[args_name.size() - 1];
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return template_name + "<" + args_name + (last_ch == '>' ? " >" : ">");
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}
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inline std::string parse_type(const mangled_storage_impl &, dummy<>*) {
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return "";
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}
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template<typename T>
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inline std::string
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type_name(const mangled_storage_impl &ms)
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{
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using namespace parser;
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using type = dummy<T>*;
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return parse_type(ms, type());
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}
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}
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template<typename T> std::string mangled_storage_impl::get_variable(const std::string &name) const
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{
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auto found = std::find_if(storage_.begin(), storage_.end(),
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[&](const entry& e) {return e.demangled == name;});
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if (found != storage_.end())
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return found->mangled;
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else
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return "";
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}
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template<typename Func> std::string mangled_storage_impl::get_function(const std::string &name) const
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{
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using func_type = Func*;
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auto matcher = name + '(' + parser::arg_list(*this, func_type()) + ')';
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auto found = std::find_if(storage_.begin(), storage_.end(), [&](const entry& e) {return e.demangled == matcher;});
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if (found != storage_.end())
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return found->mangled;
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else
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return "";
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}
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template<typename Class, typename Func>
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std::string mangled_storage_impl::get_mem_fn(const std::string &name) const
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{
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using namespace parser;
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using func_type = Func*;
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std::string cname = get_name<Class>();
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const auto matcher = cname + "::" + name +
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'(' + parser::arg_list(*this, func_type()) + ')'
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+ const_rule<Class>() + volatile_rule<Class>();
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// Linux export table contains int MyClass::Func<float>(), but expected in import_mangled MyClass::Func<float>() without returned type.
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auto found = std::find_if(storage_.begin(), storage_.end(), [&matcher](const entry& e) {
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if (e.demangled == matcher) {
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return true;
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}
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const auto pos = e.demangled.rfind(matcher);
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if (pos == std::string::npos) {
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// Not found.
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return false;
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}
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if (pos + matcher.size() != e.demangled.size()) {
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// There are some characters after the `matcher` string.
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return false;
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}
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// Double checking that we matched a full function name
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return e.demangled[pos - 1] == ' '; // `if (e.demangled == matcher)` makes sure that `pos > 0`
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});
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if (found != storage_.end())
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return found->mangled;
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else
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return "";
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}
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template<typename Signature>
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auto mangled_storage_impl::get_constructor() const -> ctor_sym
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{
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using namespace parser;
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using func_type = Signature*;
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std::string ctor_name; // = class_name + "::" + name;
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std::string unscoped_cname; //the unscoped class-name
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{
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auto class_name = get_return_type(dummy<Signature>());
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auto pos = class_name.rfind("::");
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if (pos == std::string::npos)
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{
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ctor_name = class_name+ "::" +class_name ;
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unscoped_cname = class_name;
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}
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else
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{
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unscoped_cname = class_name.substr(pos+2) ;
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ctor_name = class_name+ "::" + unscoped_cname;
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}
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}
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auto matcher =
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ctor_name + '(' + parser::arg_list(*this, func_type()) + ')';
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std::vector<entry> findings;
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std::copy_if(storage_.begin(), storage_.end(),
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std::back_inserter(findings), [&](const entry& e) {return e.demangled == matcher;});
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ctor_sym ct;
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for (auto & e : findings)
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{
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if (e.mangled.find(unscoped_cname +"C1E") != std::string::npos)
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ct.C1 = e.mangled;
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else if (e.mangled.find(unscoped_cname +"C2E") != std::string::npos)
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ct.C2 = e.mangled;
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else if (e.mangled.find(unscoped_cname +"C3E") != std::string::npos)
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ct.C3 = e.mangled;
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}
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return ct;
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}
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template<typename Class>
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auto mangled_storage_impl::get_destructor() const -> dtor_sym
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{
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std::string dtor_name; // = class_name + "::" + name;
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std::string unscoped_cname; //the unscoped class-name
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{
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auto class_name = get_name<Class>();
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auto pos = class_name.rfind("::");
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if (pos == std::string::npos)
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{
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dtor_name = class_name+ "::~" + class_name + "()";
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unscoped_cname = class_name;
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}
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else
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{
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unscoped_cname = class_name.substr(pos+2) ;
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dtor_name = class_name+ "::~" + unscoped_cname + "()";
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}
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}
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auto d0 = unscoped_cname + "D0Ev";
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auto d1 = unscoped_cname + "D1Ev";
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auto d2 = unscoped_cname + "D2Ev";
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dtor_sym dt;
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//this is so simple, i don#t need a predicate
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for (auto & s : storage_)
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{
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//alright, name fits
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if (s.demangled == dtor_name)
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{
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if (s.mangled.find(d0) != std::string::npos)
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dt.D0 = s.mangled;
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else if (s.mangled.find(d1) != std::string::npos)
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dt.D1 = s.mangled;
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else if (s.mangled.find(d2) != std::string::npos)
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dt.D2 = s.mangled;
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}
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}
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return dt;
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}
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template<typename T>
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std::string mangled_storage_impl::get_type_info() const
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{
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std::string id = "typeinfo for " + get_name<T>();
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auto predicate = [&](const mangled_storage_base::entry & e)
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{
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return e.demangled == id;
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};
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auto found = std::find_if(storage_.begin(), storage_.end(), predicate);
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if (found != storage_.end())
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return found->mangled;
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else
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return "";
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}
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template<typename T>
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std::vector<std::string> mangled_storage_impl::get_related() const
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{
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std::vector<std::string> ret;
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auto name = get_name<T>();
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for (auto & c : storage_)
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{
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if (c.demangled.find(name) != std::string::npos)
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ret.push_back(c.demangled);
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}
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return ret;
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}
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}}}
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#endif /* BOOST_DLL_DETAIL_DEMANGLING_ITANIUM_HPP_ */
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