45 lines
1.5 KiB
C++
45 lines
1.5 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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namespace lean {
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class script_evaluator;
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class frontend;
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class state;
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class environment;
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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(frontend & fe, std::istream & in, script_evaluator * 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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};
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/** \brief Implements the Read Eval Print loop */
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class shell {
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frontend & m_frontend;
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script_evaluator * m_script_evaluator;
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public:
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shell(frontend & fe, script_evaluator * S);
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~shell();
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bool operator()();
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};
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bool parse_commands(frontend & fe, std::istream & in, script_evaluator * S = nullptr, bool use_exceptions = true, bool interactive = false);
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bool parse_commands(environment const & env, state & st, std::istream & in, script_evaluator * S = nullptr, bool use_exceptions = true, bool interactive = false);
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expr parse_expr(frontend & fe, std::istream & in, script_evaluator * S = nullptr, bool use_exceptions = true);
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expr parse_expr(environment const & env, state & st, std::istream & in, script_evaluator * S = nullptr, bool use_exceptions = true);
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}
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