AP_RangeFinder: replace header guard with pragma once

libraries/AP_RangeFinder/AP_RangeFinder_BBB_PRU.h

@@ -1,5 +1,4 @@
-#ifndef __AP_RANGEFINDER_PRU_H__
-#define __AP_RANGEFINDER_PRU_H__
+#pragma once
 
 #include "RangeFinder.h"
 #include "RangeFinder_Backend.h"
@@ -33,4 +32,3 @@ public:
 private:
 
 };
-#endif  // __AP_RANGEFINDER_PRU_H__

libraries/AP_RangeFinder/AP_RangeFinder_LightWareI2C.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
-#ifndef __AP_RANGEFINDER_LIGHTWARELRF_H__
-#define __AP_RANGEFINDER_LIGHTWARELRF_H__
+#pragma once
 
 #include "RangeFinder.h"
 #include "RangeFinder_Backend.h"
@@ -23,4 +21,3 @@ private:
     // get a reading
     bool get_reading(uint16_t &reading_cm);
 };
-#endif  // __AP_RANGEFINDER_LIGHTWARELRF_H__

libraries/AP_RangeFinder/AP_RangeFinder_LightWareSerial.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
-#ifndef __AP_RANGEFINDER_LIGHTWARESERIAL_H__
-#define __AP_RANGEFINDER_LIGHTWARESERIAL_H__
+#pragma once
 
 #include "RangeFinder.h"
 #include "RangeFinder_Backend.h"
@@ -29,4 +27,3 @@ private:
     char linebuf[10];
     uint8_t linebuf_len = 0;
 };
-#endif  // __AP_RANGEFINDER_LIGHTWARESERIAL_H__

libraries/AP_RangeFinder/AP_RangeFinder_MaxsonarI2CXL.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
-#ifndef __AP_RANGEFINDER_MAXSONARI2CXL_H__
-#define __AP_RANGEFINDER_MAXSONARI2CXL_H__
+#pragma once
 
 #include "RangeFinder.h"
 #include "RangeFinder_Backend.h"
@@ -32,4 +30,3 @@ private:
     static bool start_reading(void);
     static bool get_reading(uint16_t &reading_cm);
 };
-#endif  // __AP_RANGEFINDER_MAXSONARI2CXL_H__

libraries/AP_RangeFinder/AP_RangeFinder_PX4.h

@@ -13,9 +13,7 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
- 
-#ifndef AP_RangeFinder_PX4_H
-#define AP_RangeFinder_PX4_H
+#pragma once
 
 #include "RangeFinder.h"
 #include "RangeFinder_Backend.h"
@@ -49,5 +47,3 @@ private:
     // try to open the PX4 driver and return its fd
     static int open_driver(void);
 };
-
-#endif // AP_RangeFinder_PX4_H

libraries/AP_RangeFinder/AP_RangeFinder_PX4_PWM.h

@@ -13,9 +13,7 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
- 
-#ifndef AP_RangeFinder_PX4_PWM_H
-#define AP_RangeFinder_PX4_PWM_H
+#pragma once
 
 #include "RangeFinder.h"
 #include "RangeFinder_Backend.h"
@@ -43,5 +41,3 @@ private:
     uint32_t _good_sample_count;
     float _last_sample_distance_cm;
 };
-
-#endif // AP_RangeFinder_PX4_PWM_H

libraries/AP_RangeFinder/AP_RangeFinder_PulsedLightLRF.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
-#ifndef __AP_RANGEFINDER_PULSEDLIGHTLRF_H__
-#define __AP_RANGEFINDER_PULSEDLIGHTLRF_H__
+#pragma once
 
 #include "RangeFinder.h"
 #include "RangeFinder_Backend.h"
@@ -49,4 +47,3 @@ private:
     static bool start_reading(void);
     static bool get_reading(uint16_t &reading_cm);
 };
-#endif  // __AP_RANGEFINDER_PULSEDLIGHTLRF_H__

libraries/AP_RangeFinder/AP_RangeFinder_analog.h

@@ -1,7 +1,5 @@
 /// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
-#ifndef __AP_RANGEFINDER_ANALOG_H__
-#define __AP_RANGEFINDER_ANALOG_H__
+#pragma once
 
 #include "RangeFinder.h"
 #include "RangeFinder_Backend.h"
@@ -24,5 +22,3 @@ private:
 
     AP_HAL::AnalogSource *source;
 };
-#endif // __AP_RANGEFINDER_ANALOG_H__
-

libraries/AP_RangeFinder/RangeFinder.h

@@ -13,9 +13,7 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
-#ifndef __RANGEFINDER_H__
-#define __RANGEFINDER_H__
+#pragma once
 
 #include <AP_Common/AP_Common.h>
 #include <AP_HAL/AP_HAL.h>
@@ -191,4 +189,3 @@ private:
 
     void update_pre_arm_check(uint8_t instance);
 };
-#endif // __RANGEFINDER_H__

libraries/AP_RangeFinder/RangeFinder_Backend.h

@@ -13,9 +13,7 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
-#ifndef __AP_RANGEFINDER_BACKEND_H__
-#define __AP_RANGEFINDER_BACKEND_H__
+#pragma once
 
 #include <AP_Common/AP_Common.h>
 #include <AP_HAL/AP_HAL.h>
@@ -50,4 +48,3 @@ protected:
     RangeFinder &ranger;
     RangeFinder::RangeFinder_State &state;
 };
-#endif // __AP_RANGEFINDER_BACKEND_H__