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[caching/mapping_array] add damage visitor

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This commit is contained in:
Joe Thornber
2013-10-02 10:50:13 +01:00
parent 326134a7aa
commit b1f5807513
2 changed files with 74 additions and 1 deletions
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29
caching/mapping_array.h
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@@ -26,10 +26,37 @@ namespace caching {
static void pack(value_type const &value, disk_type &disk);
};
// FIXME: damage visitor stuff
class damage_visitor;
struct damage {
virtual ~damage() {}
virtual void visit(damage_visitor &v) const = 0;
};
struct missing_mappings : public damage {
missing_mappings(run<uint32_t> const &keys, std::string const &desc);
virtual void visit(damage_visitor &v) const;
run<uint32_t> keys_;
std::string desc_;
};
class damage_visitor {
public:
virtual ~damage_visitor() {}
virtual void visit(mapping_array_detail::damage const &d) {
d.visit(*this);
}
virtual void visit(missing_mappings const &d) = 0;
};
}
typedef persistent_data::array<mapping_array_detail::mapping_traits> mapping_array;
void check_mapping_array(mapping_array const &array,
mapping_array_detail::damage_visitor &visitor);
}
//----------------------------------------------------------------