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Attempts to add array support to ::set and BSON deserialisation.

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This commit is contained in:
Thomas Harte
2020-05-26 22:55:55 -04:00
parent 023d76a3e7
commit 51d684820f
3 changed files with 74 additions and 36 deletions
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Reflection/Struct.hpp
+15 -18
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@@ -28,9 +28,11 @@ struct Struct {
virtual std::vector<std::string> all_keys() const = 0;
virtual const std::type_info *type_of(const std::string &name) const = 0;
virtual size_t count_of(const std::string &name) const = 0;
virtual void set(const std::string &name, const void *value) = 0;
virtual void set(const std::string &name, const void *value, size_t offset = 0) = 0;
virtual void *get(const std::string &name) = 0;
virtual const void *get(const std::string &name) const = 0;
virtual const void *get(const std::string &name) const {
return const_cast<Struct *>(this)->get(name);
}
virtual std::vector<std::string> values_for(const std::string &name) const = 0;
virtual ~Struct() {}
@@ -80,7 +82,7 @@ struct Struct {
@returns @c true if the property was successfully set; @c false otherwise.
*/
template <typename Type> bool set(Struct &target, const std::string &name, Type value);
template <typename Type> bool set(Struct &target, const std::string &name, Type value, size_t offset = 0);
/*!
Setting an int:
@@ -90,27 +92,27 @@ template <typename Type> bool set(Struct &target, const std::string &name, Type
* to an int64_t promotes the int; and
* to a registered enum, copies the int.
*/
template <> bool set(Struct &target, const std::string &name, int64_t value);
template <> bool set(Struct &target, const std::string &name, int value);
template <> bool set(Struct &target, const std::string &name, int64_t value, size_t offset);
template <> bool set(Struct &target, const std::string &name, int value, size_t offset);
/*!
Setting a string:
* to an enum, if the string names a member of the enum, sets the value.
*/
template <> bool set(Struct &target, const std::string &name, const std::string &value);
template <> bool set(Struct &target, const std::string &name, const char *value);
template <> bool set(Struct &target, const std::string &name, const std::string &value, size_t offset);
template <> bool set(Struct &target, const std::string &name, const char *value, size_t offset);
/*!
Setting a bool:
* to a bool, copies the value.
*/
template <> bool set(Struct &target, const std::string &name, bool value);
template <> bool set(Struct &target, const std::string &name, bool value, size_t offset);
template <> bool set(Struct &target, const std::string &name, float value);
template <> bool set(Struct &target, const std::string &name, double value);
template <> bool set(Struct &target, const std::string &name, float value, size_t offset);
template <> bool set(Struct &target, const std::string &name, double value, size_t offset);
/*!
Fuzzy-set attempts to set any property based on a string value. This is intended to allow input provided by the user.
@@ -155,21 +157,16 @@ template <typename Owner> class StructImpl: public Struct {
return reinterpret_cast<uint8_t *>(this) + iterator->second.offset;
}
const void *get(const std::string &name) const final {
const auto iterator = contents_.find(name);
if(iterator == contents_.end()) return nullptr;
return reinterpret_cast<const uint8_t *>(this) + iterator->second.offset;
}
/*!
Stores the @c value of type @c Type to the offset registered for the field @c name.
It is the caller's responsibility to provide an appropriate type of data.
*/
void set(const std::string &name, const void *value) final {
void set(const std::string &name, const void *value, size_t offset) final {
const auto iterator = contents_.find(name);
if(iterator == contents_.end()) return;
memcpy(reinterpret_cast<uint8_t *>(this) + iterator->second.offset, value, iterator->second.size);
assert(offset < iterator->second.count);
memcpy(reinterpret_cast<uint8_t *>(this) + iterator->second.offset + offset * iterator->second.size, value, iterator->second.size);
}
/*!