33 lines
1.1 KiB
C++
33 lines
1.1 KiB
C++
/*
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Copyright (c) 2013 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Leonardo de Moura
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*/
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#pragma once
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#include <memory>
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#include <utility>
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#include "util/sexpr/options.h"
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namespace lean {
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class expr;
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class environment;
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class formatter {
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std::function<format(expr const &, options const &)> m_fn;
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options m_options;
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public:
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formatter(options const & o, std::function<format(expr const &, options const &)> const & fn):m_fn(fn), m_options(o) {}
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format operator()(expr const & e) const { return m_fn(e, m_options); }
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options const & get_options() const { return m_options; }
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formatter update_options(options const & o) const { return formatter(o, m_fn); }
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};
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typedef std::function<formatter(environment const &, options const &)> formatter_factory;
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std::ostream & operator<<(std::ostream & out, expr const & e);
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typedef std::function<format(formatter const &)> pp_fn;
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void set_print_fn(std::function<void(std::ostream &, expr const &)> const & fn);
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}
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