73 lines
3.7 KiB
C++
73 lines
3.7 KiB
C++
/*
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Copyright (c) 2014 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 "util/sstream.h"
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#include "kernel/ext_exception.h"
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#include "kernel/pos_info_provider.h"
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namespace lean {
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class generic_exception : public ext_exception {
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protected:
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optional<expr> m_main_expr;
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pp_fn m_pp_fn;
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public:
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generic_exception(char const * msg, optional<expr> const & m, pp_fn const & fn):
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ext_exception(msg), m_main_expr(m), m_pp_fn(fn) {}
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generic_exception(optional<expr> const & m, pp_fn const & fn):
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ext_exception(), m_main_expr(m), m_pp_fn(fn) {}
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generic_exception(optional<expr> const & m, char const * msg);
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generic_exception(optional<expr> const & m, sstream const & strm):generic_exception(m, strm.str().c_str()) {}
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explicit generic_exception(char const * msg):generic_exception(none_expr(), msg) {}
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explicit generic_exception(sstream const & strm):generic_exception(none_expr(), strm) {}
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generic_exception(expr const & m, char const * msg):generic_exception(some_expr(m), msg) {}
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generic_exception(expr const & m, sstream const & strm):generic_exception(some_expr(m), strm) {}
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generic_exception(expr const & m, pp_fn const & fn):generic_exception(some_expr(m), fn) {}
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virtual ~generic_exception() noexcept {}
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virtual optional<expr> get_main_expr() const override { return m_main_expr; }
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virtual format pp(formatter const & fmt) const override { return m_pp_fn(fmt); }
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virtual throwable * clone() const override { return new generic_exception(m_msg.c_str(), m_main_expr, m_pp_fn); }
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virtual void rethrow() const override { throw *this; }
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};
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class nested_exception : public generic_exception {
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std::shared_ptr<throwable> m_exception;
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public:
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nested_exception(optional<expr> const & m, pp_fn const & fn, throwable const & ex):
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generic_exception(m, fn), m_exception(std::shared_ptr<throwable>(ex.clone())) {}
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nested_exception(optional<expr> const & m, char const * msg, throwable const & ex):
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generic_exception(m, msg), m_exception(std::shared_ptr<throwable>(ex.clone())) {}
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nested_exception(optional<expr> const & m, sstream const & strm, throwable const & ex):
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generic_exception(m, strm), m_exception(std::shared_ptr<throwable>(ex.clone())) {}
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explicit nested_exception(char const * msg, throwable const & ex):
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nested_exception(none_expr(), msg, ex) {}
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explicit nested_exception(sstream const & strm, throwable const & ex):
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nested_exception(none_expr(), strm, ex) {}
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virtual ~nested_exception() noexcept {}
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virtual optional<expr> get_main_expr() const override;
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virtual format pp(formatter const & fmt) const override;
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virtual throwable * clone() const override;
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virtual void rethrow() const override { throw *this; }
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};
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/** \brief Lean exception occurred when parsing file. */
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class parser_nested_exception : public exception {
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std::shared_ptr<throwable> m_exception;
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std::shared_ptr<pos_info_provider> m_provider;
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public:
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parser_nested_exception(std::shared_ptr<throwable> const & ex, std::shared_ptr<pos_info_provider> const & pr):
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exception("parser exception"), m_exception(ex), m_provider(pr) {}
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virtual ~parser_nested_exception() {}
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virtual throwable * clone() const { return new parser_nested_exception(m_exception, m_provider); }
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virtual void rethrow() const { throw *this; }
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virtual char const * what() const noexcept { return m_exception->what(); }
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throwable const & get_exception() const { return *(m_exception.get()); }
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pos_info_provider const & get_provider() const { return *(m_provider.get()); }
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};
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}
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