53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
#ifndef ERROR_SET_H
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#define ERROR_SET_H
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#include <boost/optional.hpp>
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#include <boost/shared_ptr.hpp>
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#include <list>
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#include <iosfwd>
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#include <string>
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//----------------------------------------------------------------
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namespace persistent_data {
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// When checking the metadata for a thin device we don't want to
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// stop at the first error. Instead should collect as much
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// information as possible. The errors are hierarchical, so the
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// user can control how much detail is displayed.
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class error_set {
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public:
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typedef boost::shared_ptr<error_set> ptr;
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error_set(std::string const &err);
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std::string const &get_description() const;
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std::list<error_set::ptr> const &get_children() const;
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void add_child(error_set::ptr err);
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void add_child(boost::optional<error_set::ptr> maybe_errs);
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void add_child(std::string const &err);
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private:
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std::string err_;
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std::list<error_set::ptr> children_;
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};
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// The error_selector is a little proxy class used when printing
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// errors to a stream.
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class error_selector {
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public:
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error_selector(error_set::ptr errs, unsigned depth);
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void print(std::ostream &out) const;
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private:
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error_set::ptr errs_;
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unsigned depth_;
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};
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std::ostream &operator << (std::ostream &out, error_selector const &errs);
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}
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//----------------------------------------------------------------
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#endif
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