53 lines
1.6 KiB
C++
53 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 <exception>
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#include <string>
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namespace lean {
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class sstream;
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/** \brief Base class for all Lean exceptions */
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class exception : public std::exception {
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protected:
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std::string m_msg;
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exception() {}
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public:
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exception(char const * msg);
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exception(std::string const & msg);
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exception(sstream const & strm);
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exception(exception const & ex);
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virtual ~exception() noexcept;
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virtual char const * what() const noexcept;
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};
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/** \brief Exception produced by a Lean parser. */
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class parser_exception : public exception {
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protected:
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unsigned m_line;
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unsigned m_pos;
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public:
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parser_exception(char const * msg, unsigned l, unsigned p);
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parser_exception(std::string const & msg, unsigned l, unsigned p);
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parser_exception(sstream const & strm, unsigned l, unsigned p);
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parser_exception(parser_exception const & ex);
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virtual ~parser_exception() noexcept;
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virtual char const * what() const noexcept;
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unsigned get_line() const { return m_line; }
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unsigned get_pos() const { return m_pos; }
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};
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/** \brief Exception used to sign that a computation was interrupted */
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class interrupted : public exception {
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public:
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interrupted() {}
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virtual ~interrupted() noexcept {}
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virtual char const * what() const noexcept { return "interrupted"; }
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};
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/** \brief Throw interrupted exception iff flag is true. */
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inline void check_interrupted(bool flag) {
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if (flag)
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throw interrupted();
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}
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}
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