25 lines
528 B
C++
25 lines
528 B
C++
#pragma once
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#include <boost/variant/static_visitor.hpp>
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#include "mstch/mstch.hpp"
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namespace mstch
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{
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class has_token : public boost::static_visitor<bool>
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{
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public:
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has_token(const std::string &token) : m_token(token) {}
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template <class T> bool operator()(const T &) const { return m_token == "."; }
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bool operator()(const map &map) const { return map.count(m_token) == 1; }
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bool operator()(const std::shared_ptr<object> &object) const { return object->has(m_token); }
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private:
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const std::string &m_token;
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};
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}
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