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AP_Periph: code-generate chan-fetching methods

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A recent PR had to change every single one of these methods, which was kind of unfortunate.

So generate the methods using a #define so the duplication happens at preprocessor-time.
This commit is contained in:
Peter Barker 2022-12-14 12:14:18 +11:00 committed by Peter Barker
parent 82e7476532
commit d438c8e127
1 changed files with 6 additions and 14 deletions
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20
Tools/AP_Periph/GCS_MAVLink.h
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@ -70,20 +70,12 @@ protected:
}
private:
GCS_MAVLINK_Periph *chan(const uint8_t ofs) override {
if (ofs > _num_gcs) {
INTERNAL_ERROR(AP_InternalError::error_t::gcs_offset);
return nullptr;
}
return (GCS_MAVLINK_Periph *)_chan[ofs];
};
const GCS_MAVLINK_Periph *chan(const uint8_t ofs) const override {
if (ofs > _num_gcs) {
INTERNAL_ERROR(AP_InternalError::error_t::gcs_offset);
return nullptr;
}
return (GCS_MAVLINK_Periph *)_chan[ofs];
};
// the following define expands to a pair of methods to retrieve a
// pointer to an object of the correct subclass for the link at
// offset ofs. These are of the form:
// GCS_MAVLINK_XXXX *chan(const uint8_t ofs) override;
// const GCS_MAVLINK_XXXX *chan(const uint8_t ofs) override const;
GCS_MAVLINK_CHAN_METHOD_DEFINITIONS(GCS_MAVLINK_Periph);
MAV_TYPE frame_type() const override { return MAV_TYPE_GENERIC; }
uint32_t custom_mode() const override { return 3; } // magic number