48 lines
1.6 KiB
C++
48 lines
1.6 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 <iostream>
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#include "kernel/environment.h"
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#include "library/io_state.h"
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namespace lean {
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class script_state;
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/** \brief Functional object for parsing commands and expressions */
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class parser {
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class imp;
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std::unique_ptr<imp> m_ptr;
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public:
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parser(environment const & env, io_state const & st, std::istream & in, script_state * S, bool use_exceptions = true, bool interactive = false);
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parser(environment const & env, std::istream & in, script_state * S, bool use_exceptions = true, bool interactive = false);
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~parser();
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/** \brief Parse a sequence of commands */
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bool operator()();
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/** \brief Parse a single expression */
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expr parse_expr();
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io_state get_io_state() const;
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};
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/** \brief Implements the Read Eval Print loop */
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class shell {
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environment m_env;
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io_state m_io_state;
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script_state * m_script_state;
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public:
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shell(environment const & env, io_state const & st, script_state * S);
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shell(environment const & env, script_state * S);
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~shell();
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bool operator()();
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io_state get_io_state() const { return m_io_state; }
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};
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bool parse_commands(environment const & env, io_state & st, std::istream & in, script_state * S = nullptr, bool use_exceptions = true, bool interactive = false);
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expr parse_expr(environment const & env, io_state & st, std::istream & in, script_state * S = nullptr, bool use_exceptions = true);
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}
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