8ab775bd6f
Now, we use throwable as the new base class for all Lean exceptions, and exception is the subclass for "logical" exceptions.
51 lines
2.1 KiB
C++
51 lines
2.1 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 <string>
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#include <memory>
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#include "util/exception.h"
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namespace lean {
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/**
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\brief Exception for wrapping errors produced by the Lua engine.
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*/
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class script_exception : public exception {
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public:
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enum class source { String, File, Unknown };
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protected:
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source m_source;
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std::string m_file; // if source == File, then this field contains the filename that triggered the error.
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unsigned m_line; // line number
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script_exception(source s, std::string f, unsigned l, std::string const & msg):exception(msg), m_source(s), m_file(f), m_line(l) {}
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public:
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script_exception(char const * lua_error);
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virtual ~script_exception();
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virtual char const * what() const noexcept;
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virtual source get_source() const { return m_source; }
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virtual char const * get_file_name() const;
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virtual unsigned get_line() const;
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/** \brief Return error message without position information */
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virtual char const * get_msg() const noexcept;
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virtual throwable * clone() const { return new script_exception(m_source, m_file, m_line, m_msg); }
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virtual void rethrow() const { throw *this; }
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};
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/**
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\brief Lean exception occurred inside of a script
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*/
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class script_nested_exception : public script_exception {
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std::shared_ptr<throwable> m_exception;
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script_nested_exception(source s, std::string f, unsigned l, std::shared_ptr<throwable> const & ex);
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public:
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script_nested_exception(bool file, std::string f, unsigned l, std::shared_ptr<throwable> const & ex):script_nested_exception(file ? source::File : source::String, f, l, ex) {}
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virtual ~script_nested_exception();
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virtual char const * what() const noexcept;
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virtual throwable * clone() const { return new script_nested_exception(m_source, m_file, m_line, m_exception); }
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virtual void rethrow() const { throw *this; }
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throwable const & get_exception() const { return *(m_exception.get()); }
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};
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}
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