SWIGJAVA: Remove the last JAVA ifdefs from src

Removed all references to #ifdef SWIGJAVA and JAVACALLBACK from the
library source.  All java-specific source code has been moved to the
corresponding library's .i file for java.

    * Update library source
    * Update examples where necessary
    * The function pointer methodology has been remove from libraries
      which provided callbacks as both a class and a function pointer
      implementation.  Examples were updated to use the class version
      of callbacks.
    * Updated documentation for SWIGJAVA

Signed-off-by: Noel Eck <noel.eck@intel.com>

src/CMakeLists.txt

@@ -461,7 +461,7 @@ function(upm_swig_java)
       ${DEPEND_DIRS}
      )
     set_target_properties (javaupm_${libname} PROPERTIES
-      COMPILE_FLAGS "-fpermissive -DJAVACALLBACK -DSWIGJAVA"
+      COMPILE_FLAGS "-fpermissive"
       PREFIX "lib"
       SUFFIX ".so"
     )

src/adxl335/adxl335.cxx

@@ -77,14 +77,12 @@ void ADXL335::values(int *xVal, int *yVal, int *zVal)
   *zVal = mraa_aio_read(m_aioZ);
 }
 
-#ifdef SWIGJAVA
-int *ADXL335::values()
+std::vector<int> ADXL335::values()
 {
-  int *v = new int[3];
+  std::vector<int> v(3);
   values(&v[0], &v[1], &v[2]);
   return v;
 }
-#endif
 
 void ADXL335::acceleration(float *xAccel, float *yAccel, float *zAccel)
 {
@@ -101,14 +99,12 @@ void ADXL335::acceleration(float *xAccel, float *yAccel, float *zAccel)
   *zAccel = (zVolts - m_zeroZ) / ADXL335_SENSITIVITY;
 }
 
-#ifdef SWIGJAVA
-float *ADXL335::acceleration()
+std::vector<float> ADXL335::acceleration()
 {
-  float *v = new float[3];
+  std::vector<float> v(3);
   acceleration(&v[0], &v[1], &v[2]);
   return v;
 }
-#endif
 
 void ADXL335::calibrate()
 {

src/adxl335/adxl335.hpp

@@ -27,6 +27,7 @@
 #pragma once
 
 #include <string>
+#include <vector>
 #include <mraa/aio.h>
 
 #define ADXL335_DEFAULT_AREF 5.0
@@ -106,14 +107,12 @@ namespace upm {
      */
     void values(int *xVal, int *yVal, int *zVal);
 
-#ifdef SWIGJAVA
     /**
      * Gets the analog values for the 3 axes
      *
-     * @return Array containing value of X, Y, Z axes
+     * @return std::vector of x, y, z analog acceleration values
      */
-    int *values();
-#endif
+    std::vector<int> values();
 
     /**
      * Gets the acceleration along all 3 axes
@@ -124,14 +123,12 @@ namespace upm {
      */
     void acceleration(float *xAccel, float *yAccel, float *zAccel);
 
-#ifdef SWIGJAVA
     /**
      * Gets the acceleration along all 3 axes
      *
-     * @return Array containing acceleration on X, Y, Z axes
+     * @return std::vector of x, y, z acceleration values
      */
-    float *acceleration();
-#endif
+    std::vector<float> acceleration();
 
     /**
      * While the sensor is still, measures the X-axis, Y-axis, and Z-axis

src/bma220/bma220.cxx

@@ -167,14 +167,12 @@ void BMA220::getAccelerometer(float *x, float *y, float *z)
     *z = m_accelZ / m_accelScale;
 }
 
-#ifdef JAVACALLBACK
-float *BMA220::getAccelerometer()
+std::vector<float> BMA220::getAccelerometer()
 {
-  float *v = new float[3];
+  std::vector<float> v(3);
   getAccelerometer(&v[0], &v[1], &v[2]);
   return v;
 }
-#endif
 
 uint8_t BMA220::getChipID()
 {

src/bma220/bma220.hpp

@@ -24,6 +24,7 @@
 #pragma once
 
 #include <string>
+#include <vector>
 #include <mraa/common.hpp>
 #include <mraa/i2c.hpp>
 #include <mraa/gpio.hpp>
@@ -539,14 +540,12 @@ namespace upm {
      */
     void getAccelerometer(float *x, float *y, float *z);
 
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
     /**
      * get the accelerometer values in gravities
      *
-     * @return Array containing X, Y, Z acceleration values
+     * @return std::vector containing X, Y, Z acceleration values
      */
-    float *getAccelerometer();
-#endif
+    std::vector<float> getAccelerometer();
 
     /**
      * set the filtering configuration

src/button/button.cxx

@@ -59,13 +59,6 @@ int Button::value()
     return mraa_gpio_read(m_gpio);
 }
 
-/*#ifdef JAVACALLBACK
-void Button::installISR(mraa::Edge level, jobject runnable)
-{
-  installISR(level, mraa_java_isr_callback, runnable);
-}
-#endif*/
-
 void Button::installISR(mraa::Edge level, void (*isr)(void *), void *arg)
 {
   if (m_isrInstalled)

src/button/button.hpp

@@ -87,11 +87,8 @@ class Button{
          * @param arg Pointer to an object to be supplied as an
          * argument to the ISR.
          */
-/*#if defined(SWIGJAVA) || defined(JAVACALLBACK)
-        void installISR(mraa::Edge level, jobject runnable);
-#else*/
         void installISR(mraa::Edge level, void (*isr)(void *), void *arg);
-//#endif
+
         /**
          * Uninstalls the previously installed ISR
          *

src/carrays_uint16_t.i

@@ -31,5 +31,3 @@
   $1 = reinterpret_cast< uint16_t * >(argp);
 }
 #endif
-
-//#elsif (SWIGJAVA)

src/carrays_uint32_t.i

@@ -52,5 +52,3 @@
   }
 }
 #endif
-
-//#elsif (SWIGJAVA)

src/carrays_uint8_t.i

@@ -31,5 +31,3 @@
   $1 = reinterpret_cast< uint8_t * >(argp);
 }
 #endif
-
-//#elsif (SWIGJAVA)

src/grove/grovebutton.cxx

@@ -58,13 +58,6 @@ int GroveButton::value()
     return mraa_gpio_read(m_gpio);
 }
 
-/*#ifdef JAVACALLBACK
-void GroveButton::installISR(mraa::Edge level, jobject runnable)
-{
-  installISR(level, mraa_java_isr_callback, runnable);
-}
-#endif*/
-
 void GroveButton::installISR(mraa::Edge level, void (*isr)(void *), void *arg)
 {
   if (m_isrInstalled)

src/grove/grovebutton.hpp

@@ -84,11 +84,8 @@ class GroveButton: public Grove {
          * @param arg Pointer to an object to be supplied as an
          * argument to the ISR.
          */
-//#if defined(SWIGJAVA) || defined(JAVACALLBACK)
-  //      void installISR(mraa::Edge level, jobject runnable);
-//#else
         void installISR(mraa::Edge level, void (*isr)(void *), void *arg);
-//#endif
+
         /**
          * Uninstalls the previously installed ISR
          *

src/h3lis331dl/h3lis331dl.cxx

@@ -600,25 +600,23 @@ void H3LIS331DL::getXYZ(int *x, int *y, int*z)
   *z = (m_rawZ - m_adjZ);
 }
 
-#ifdef SWIGJAVA
-float *H3LIS331DL::getAcceleration()
+std::vector<float> H3LIS331DL::getAcceleration()
 {
-  float *v = new float[3];
+  std::vector<float> v(3);
   getAcceleration(&v[0], &v[1], &v[2]);
   return v;
 }
 
-int *H3LIS331DL::getRawXYZ()
+std::vector<int> H3LIS331DL::getRawXYZ()
 {
-  int *v = new int[3];
+  std::vector<int> v(3);
   getRawXYZ(&v[0], &v[1], &v[2]);
   return v;
 }
 
-int *H3LIS331DL::getXYZ()
+std::vector<int> H3LIS331DL::getXYZ()
 {
-  int *v = new int[3];
+  std::vector<int> v(3);
   getXYZ(&v[0], &v[1], &v[2]);
   return v;
 }
-#endif

src/h3lis331dl/h3lis331dl.hpp

@@ -24,6 +24,7 @@
 #pragma once
 
 #include <string>
+#include <vector>
 #include <mraa/common.hpp>
 #include <mraa/i2c.hpp>
 
@@ -594,29 +595,26 @@ namespace upm {
      */
     void getXYZ(int *x, int *y, int *z);
 
-#ifdef SWIGJAVA
     /**
      * Gets acceleration values for each of the axes
      *
-     * @return Array containing X, Y, Z acceleration values
+     * @return std::vector containing X, Y, Z acceleration values
      */
-    float *getAcceleration();
+    std::vector<float> getAcceleration();
 
     /**
      * Gets raw axis values
      *
-     * @return Array containing X, Y, Z raw values
+     * @return std::vector containing X, Y, Z raw values
      */
-    int *getRawXYZ();
+    std::vector<int> getRawXYZ();
 
     /**
      * Gets adjusted axis values
      *
-     * @return Array containing X, Y, Z adjusted axis values
+     * @return std::vector containing X, Y, Z adjusted axis values
      */
-    int *getXYZ();
-#endif
-
+    std::vector<int> getXYZ();
 
     /**
      * Provides public access to the MRAA I2C context of the class for

src/h3lis331dl/javaupm_h3lis331dl.i

@@ -2,6 +2,10 @@
 %include "../upm.i"
 %include "cpointer.i"
 %include "typemaps.i"
+%include "std_vector.i"
+
+%template(IntVector) std::vector<int>;
+%template(FloatVector) std::vector<float>;
 
 %apply int *OUTPUT { int *x, int *y, int*z };
 %apply float *OUTPUT { float *aX, float *aY, float *aZ  };
@@ -9,45 +13,8 @@
 %ignore i2cContext;
 
 %{
-    #include "h3lis331dl.hpp"
+#include "h3lis331dl.hpp"
 %}
-
-%typemap(jni) float* "jfloatArray"
-%typemap(jstype) float* "float[]"
-%typemap(jtype) float* "float[]"
-
-%typemap(javaout) float* {
-    return $jnicall;
-}
-
-%typemap(out) float *getAcceleration {
-    $result = JCALL1(NewFloatArray, jenv, 3);
-    JCALL4(SetFloatArrayRegion, jenv, $result, 0, 3, $1);
-    delete [] $1;
-}
-
-%typemap(jni) int* "jintArray"
-%typemap(jstype) int* "int[]"
-%typemap(jtype) int* "int[]"
-
-%typemap(javaout) int* {
-    return $jnicall;
-}
-
-%typemap(out) int *getRawXYZ {
-    $result = JCALL1(NewIntArray, jenv, 3);
-    JCALL4(SetIntArrayRegion, jenv, $result, 0, 3, (const int*)$1);
-}
-
-%typemap(out) int *getXYZ {
-    $result = JCALL1(NewIntArray, jenv, 3);
-    JCALL4(SetIntArrayRegion, jenv, $result, 0, 3, (const int*)$1);
-}
-
-%ignore getRawXYZ(int *, int *, int *);
-%ignore getXYZ(int *, int *, int *);
-%ignore getAcceleration(float *, float *, float *);
-
 %include "h3lis331dl.hpp"
 
-JAVA_JNI_LOADLIBRARY(javaupm_h3lis331dl)
+JAVA_JNI_LOADLIBRARY(javaupm_h3lis331dl)

src/lsm9ds0/lsm9ds0.cxx

@@ -26,6 +26,7 @@
 #include <iostream>
 #include <stdexcept>
 #include <string.h>
+#include <vector>
 
 #include "lsm9ds0.hpp"
 
@@ -621,28 +622,26 @@ void LSM9DS0::getMagnetometer(float *x, float *y, float *z)
     *z = (m_magZ * m_magScale) / 1000.0;
 }
 
-#ifdef JAVACALLBACK
-float *LSM9DS0::getAccelerometer()
+std::vector<float> LSM9DS0::getAccelerometer()
 {
-  float *v = new float[3];
+  std::vector<float> v(3);
   getAccelerometer(&v[0], &v[1], &v[2]);
   return v;
 }
 
-float *LSM9DS0::getGyroscope()
+std::vector<float> LSM9DS0::getGyroscope()
 {
-  float *v = new float[3];
+  std::vector<float> v(3);
   getGyroscope(&v[0], &v[1], &v[2]);
   return v;
 }
 
-float *LSM9DS0::getMagnetometer()
+std::vector<float> LSM9DS0::getMagnetometer()
 {
-  float *v = new float[3];
+  std::vector<float> v(3);
   getMagnetometer(&v[0], &v[1], &v[2]);
   return v;
 }
-#endif
 
 float LSM9DS0::getTemperature()
 {

src/lsm9ds0/lsm9ds0.hpp

@@ -24,6 +24,7 @@
 #pragma once
 
 #include <string>
+#include <vector>
 #include <mraa/common.hpp>
 #include <mraa/i2c.hpp>
 
@@ -1266,28 +1267,26 @@ namespace upm {
      */
     void getMagnetometer(float *x, float *y, float *z);
 
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
     /**
      * get the accelerometer values in gravities
      *
-     * @return Array containing X, Y, Z acceleration values
+     * @return std::vector containing X, Y, Z acceleration values
      */
-    float *getAccelerometer();
+    std::vector<float> getAccelerometer();
 
     /**
      * get the gyroscope values in degrees per second
      *
-     * @return Array containing X, Y, Z gyroscope values
+     * @return std::vector containing X, Y, Z gyroscope values
      */
-    float *getGyroscope();
+    std::vector<float> getGyroscope();
 
     /**
      * get the magnetometer values in gauss
      *
-     * @return Array containing X, Y, Z magnetometer values
+     * @return std::vector containing X, Y, Z magnetometer values
      */
-    float *getMagnetometer();
-#endif
+    std::vector<float> getMagnetometer();
 
     /**
      * get the temperature value.  Unfortunately the datasheet does

src/mma7455/javaupm_mma7455.i

@@ -3,29 +3,15 @@
 %include "typemaps.i"
 %include "arrays_java.i";
 %include "../java_buffer.i"
+%include "std_vector.i"
+
+%template(ShortVector) std::vector<short>;
 
 %apply short *OUTPUT { short * ptrX, short * ptrY, short * ptrZ };
 
-%typemap(jni) short* "jshortArray"
-%typemap(jstype) short* "short[]"
-%typemap(jtype) short* "short[]"
-
-%typemap(javaout) short* {
-    return $jnicall;
-}
-
-%typemap(out) short *readData {
-    $result = JCALL1(NewShortArray, jenv, 3);
-    JCALL4(SetShortArrayRegion, jenv, $result, 0, 3, (const signed short*)$1);
-    delete [] $1;
-}
-
-%ignore readData(short *, short *, short *);
-
 %{
-    #include "mma7455.hpp"
+#include "mma7455.hpp"
 %}
-
 %include "mma7455.hpp"
 
-JAVA_JNI_LOADLIBRARY(javaupm_mma7455)
+JAVA_JNI_LOADLIBRARY(javaupm_mma7455)

src/mma7455/mma7455.cxx

@@ -26,6 +26,7 @@
 #include <string>
 #include <stdexcept>
 #include <unistd.h>
+#include <vector>
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
@@ -133,13 +134,11 @@ MMA7455::readData (short * ptrX, short * ptrY, short * ptrZ) {
     return mraa::SUCCESS;
 }
 
-#ifdef SWIGJAVA
-short *MMA7455::readData() {
-    short *v = new short[3];
+std::vector<short> MMA7455::readData() {
+    std::vector<short> v(3);
     readData(&v[0], &v[1], &v[2]);
     return v;
 }
-#endif
 
 int
 MMA7455::i2cReadReg (unsigned char reg, uint8_t *buffer, int len) {

src/mma7455/mma7455.hpp

@@ -24,6 +24,7 @@
 #pragma once
 
 #include <string>
+#include <vector>
 #include <mraa/i2c.hpp>
 
 #define ADDR               0x1D // device address
@@ -208,14 +209,13 @@ class MMA7455 {
          */
         mraa::Result readData (short * ptrX, short * ptrY, short * ptrZ);
 
-#ifdef SWIGJAVA
         /**
          * Reads X-axis, Y-axis, and Z-axis acceleration data
          *
-         * @return Array containing X, Y, Z acceleration data
+         * @return std::vector containing X, Y, Z acceleration data
          */
-        short *readData ();
-#endif
+        std::vector<short> readData ();
+
         /**
          * Internal function for reading I2C data
          *

src/mma7660/javaupm_mma7660.i

@@ -4,44 +4,17 @@
 %include "typemaps.i"
 %include "arrays_java.i";
 %include "../java_buffer.i"
+%include "std_vector.i"
+
+%template(IntVector) std::vector<int>;
+%template(FloatVector) std::vector<float>;
 
 %apply int *OUTPUT { int *x, int *y, int *z };
 %apply float *OUTPUT { float *ax, float *ay, float *az  };
 
-%typemap(jni) float* "jfloatArray"
-%typemap(jstype) float* "float[]"
-%typemap(jtype) float* "float[]"
-
-%typemap(javaout) float* {
-    return $jnicall;
-}
-
-%typemap(out) float *getAcceleration {
-    $result = JCALL1(NewFloatArray, jenv, 3);
-    JCALL4(SetFloatArrayRegion, jenv, $result, 0, 3, $1);
-}
-
-
-%typemap(jni) int* "jintArray"
-%typemap(jstype) int* "int[]"
-%typemap(jtype) int* "int[]"
-
-%typemap(javaout) int* {
-    return $jnicall;
-}
-
-%typemap(out) int *getRawValues {
-    $result = JCALL1(NewIntArray, jenv, 3);
-    JCALL4(SetIntArrayRegion, jenv, $result, 0, 3, (const signed int*)$1);
-}
-
-
-%ignore getRawValues(int *, int *, int *);
-%ignore getAcceleration(float *, float *, float *);
-
 %{
-    #include "mma7660.hpp"
-    #include "mma7660_regs.h"
+#include "mma7660.hpp"
+#include "mma7660_regs.h"
 %}
 %include "mma7660_regs.h"
 %include "mma7660.hpp"

src/mma7660/mma7660.hpp

@@ -23,7 +23,9 @@
  */
 #pragma once
 
-#include <mma7660.h>
+#include <vector>
+
+#include "mma7660.h"
 
 namespace upm {
 
@@ -197,17 +199,16 @@ namespace upm {
          */
         bool setSampleRate(MMA7660_AUTOSLEEP_T sr);
 
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
         /**
          * Reads the current acceleration values.  The returned memory
          * is statically allocated and will be overwritten on each
          * call.
          *
-         * @return Array containing x, y, z.
+         * @return std::vector containing x, y, z.
          */
-        float *getAcceleration()
+        std::vector<float> getAcceleration()
         {
-            static float values[3];
+            std::vector<float> values(3);
             getAcceleration(&values[0], &values[1], &values[2]);
             return values;
         }
@@ -217,15 +218,15 @@ namespace upm {
          * is statically allocated and will be overwritten on each
          * call.
          *
-         * @return Array containing x, y, z.
+         * @return std::vector containing x, y, z.
          */
-        int *getRawValues()
+        std::vector<int> getRawValues()
         {
-            static int values[3];
+            std::vector<int> values(3);
             getRawValues(&values[0], &values[1], &values[2]);
             return values;
         }
-#endif
+
         /**
          * Installs an interrupt service routine (ISR) to be called when
          * an interrupt occurs

src/mpu9150/javaupm_mpu9150.i

@@ -3,40 +3,22 @@
 %include "typemaps.i"
 %include "arrays_java.i"
 %include "../java_buffer.i"
+%include "std_vector.i"
+
+%template(FloatVector) std::vector<float>;
 
 %apply int {mraa::Edge};
 
 %{
-    #include "mpu60x0.hpp"
-    #include "mpu9150.hpp"
+#include "mpu60x0.hpp"
+#include "mpu9150.hpp"
 %}
-
-
-%typemap(jni) float * "jfloatArray"
-%typemap(jstype) float * "float[]"
-%typemap(jtype) float * "float[]"
-
-%typemap(javaout) float * {
-    return $jnicall;
-}
-
-%typemap(out) float * {
-    $result = JCALL1(NewFloatArray, jenv, 3);
-    JCALL4(SetFloatArrayRegion, jenv, $result, 0, 3, $1);
-    delete [] $1;
-}
-
-%ignore getAccelerometer(float *, float *, float *);
-%ignore getGyroscope(float *, float *, float *);
-%ignore getMagnetometer(float *, float *, float *);
-
 %include "mpu60x0.hpp"
 %include "mpu9150.hpp"
 
-%ignore installISR(int , mraa::Edge , void *, void *);
-
 %define GETTER get_gpioIRQ()
 %enddef
+
 JAVA_ADD_INSTALLISR_GPIO(upm::MPU60X0)
 
 JAVA_JNI_LOADLIBRARY(javaupm_mpu9150)

src/mpu9150/mpu9150.cxx

@@ -109,11 +109,9 @@ void MPU9150::getMagnetometer(float *x, float *y, float *z)
     *z = mz;
 }
 
-#ifdef SWIGJAVA
-float *MPU9150::getMagnetometer()
+std::vector<float> MPU9150::getMagnetometer()
 {
-    float *v = new float[3];
+    std::vector<float> v(3);
     getMagnetometer(&v[0], &v[1], &v[2]);
     return v;
 }
-#endif

src/mpu9150/mpu9150.hpp

@@ -23,6 +23,7 @@
  */
 
 #pragma once
+#include <vector>
 
 #include "mpu60x0.hpp"
 #include "ak8975.hpp"
@@ -108,17 +109,13 @@ namespace upm {
      */
     void getMagnetometer(float *x, float *y, float *z);
 
-#ifdef SWIGJAVA
     /**
      * Return the compensated values for the x, y, and z axes.  The
      * unit of measurement is in micro-teslas (uT).
      *
-     * @return Array containing X, Y, Z magnetometer values
+     * @return std::vector containing X, Y, Z magnetometer values
      */
-    float *getMagnetometer();
-#endif
-
-
+    std::vector<float> getMagnetometer();
 
   protected:
     // magnetometer instance

src/nrf24l01/Callback.hpp

@@ -1,6 +1,5 @@
 #pragma once
 
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
 class Callback
 {
   public:
@@ -13,10 +12,9 @@ class Callback
 };
 
 
-static void generic_callback (Callback* callback)
+void generic_callback (Callback* callback)
 {
     if (callback == NULL)
         return;
     callback->run();
 }
-#endif

src/nrf24l01/nrf24l01.cxx

@@ -134,20 +134,12 @@ NRF24L01::setPayload (uint8_t payload) {
     m_payload = payload;
 }
 
-#ifdef JAVACALLBACK
 void
 NRF24L01::setDataReceivedHandler (Callback *call_obj)
 {
     callback_obj = call_obj;
     dataReceivedHandler = &generic_callback;
 }
-#else
-void
-NRF24L01::setDataReceivedHandler (funcPtrVoidVoid handler)
-{
-    dataReceivedHandler = handler;
-}
-#endif
 
 bool
 NRF24L01::dataReady () {
@@ -316,11 +308,8 @@ void
 NRF24L01::pollListener() {
     if (dataReady()) {
         getData (m_rxBuffer);
-#ifdef JAVACALLBACK
+
         dataReceivedHandler (callback_obj); /* let know that data arrived */
-#else
-        dataReceivedHandler (); /* let know that data arrived */
-#endif
     }
 }
 

src/nrf24l01/nrf24l01.hpp

@@ -33,9 +33,7 @@
 #include <mraa/spi.hpp>
 #include <cstring>
 
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
 #include "Callback.hpp"
-#endif
 
 /* Memory Map */
 #define CONFIG              0x00
@@ -142,11 +140,7 @@
 
 namespace upm {
 
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
 typedef void (* funcPtrVoidVoid) (Callback *);
-#else
-typedef void (* funcPtrVoidVoid) ();
-#endif
 
 typedef enum {
     NRF_250KBPS = 0,
@@ -257,21 +251,13 @@ class NRF24L01 {
          */
         void    setPayload (uint8_t load);
 
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
         /**
          * Sets the handler to be called when data has been
          * received
          * @param call_obj Object used for callback - Java
          */
         void setDataReceivedHandler (Callback *call_obj);
-#else
-        /**
-         * Sets the handler to be called when data has been
-         * received
-         * @param handler Handler used for callback
-         */
-        void setDataReceivedHandler (funcPtrVoidVoid handler);
-#endif
+
         /**
          * Checks if the data has arrived
          */
@@ -374,11 +360,12 @@ class NRF24L01 {
         uint8_t     m_bleBuffer [32];       /**< BLE buffer */
 
     private:
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
-        /**< Callback object to use for setting the handler from Java */
+
+        /* Callback object to use for setting the handler from Java */
         Callback *callback_obj;
-#endif
-        funcPtrVoidVoid dataReceivedHandler; /**< Data arrived handler */
+
+        /** Data arrived handler */
+        funcPtrVoidVoid dataReceivedHandler;
 
         /**
          * Writes bytes to an SPI device

src/pn532/pn532.cxx

@@ -32,10 +32,6 @@
 #include <string>
 #include <stdexcept>
 
-#ifdef JAVACALLBACK
-#undef JAVACALLBACK
-#endif
-
 #include "pn532.hpp"
 
 using namespace upm;

src/pulsensor/Callback.hpp

@@ -1,6 +1,5 @@
 #pragma once
 
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
 class Callback
 {
   public:
@@ -11,5 +10,3 @@ class Callback
     { /* empty, overloaded in Java*/
     }
 };
-
-#endif

src/pulsensor/pulsensor.cxx

@@ -32,7 +32,6 @@
 
 using namespace upm;
 
-#if defined(JAVACALLBACK)
 Pulsensor::Pulsensor (Callback *obj_call) : pin_ctx(0)
 {
     obj_callback = obj_call;
@@ -49,24 +48,6 @@ Pulsensor::Pulsensor (Callback *obj_call) : pin_ctx(0)
     qs             = FALSE;
     apmlitude      = 100;
 }
-#else
-Pulsensor::Pulsensor (callback_handler handler) : pin_ctx(0)
-{
-    callback = handler;
-
-    sample_counter = 0;
-    last_beat_time = 0;
-    threshold      = 512;
-    ibi            = 600;
-    trough         = 512;
-    peak           = 512;
-    is_pulse       = FALSE;
-    ret            = FALSE;
-    bpm            = 0;
-    qs             = FALSE;
-    apmlitude      = 100;
-}
-#endif
 
 void Pulsensor::start_sampler ()
 {
@@ -114,11 +95,8 @@ void *Pulsensor::do_sample (void *arg) {
                     (pulsensor->is_pulse == FALSE) &&
                     (N > (pulsensor->ibi / 5)* 3) ) {
                 pulsensor->is_pulse = callback_data.is_heart_beat = TRUE;
-#if defined(JAVACALLBACK)
+
                 pulsensor->obj_callback->run(callback_data);
-#else
-                pulsensor->callback(callback_data);
-#endif
 
                 pulsensor->ibi = pulsensor->sample_counter - pulsensor->last_beat_time;
                 pulsensor->last_beat_time = pulsensor->sample_counter;
@@ -156,11 +134,9 @@ void *Pulsensor::do_sample (void *arg) {
             if (data_from_sensor < pulsensor->threshold &&
                 pulsensor->is_pulse == TRUE) {
                 pulsensor->is_pulse = callback_data.is_heart_beat = FALSE;
-#if defined(JAVACALLBACK)
+
                 pulsensor->obj_callback->run(callback_data);
-#else
-                pulsensor->callback(callback_data);
-#endif
+
                 pulsensor->is_pulse   = FALSE;
                 pulsensor->apmlitude  = pulsensor->peak - pulsensor->trough;
                 pulsensor->threshold  = pulsensor->apmlitude / 2 + pulsensor->trough;

src/pulsensor/pulsensor.hpp

@@ -47,11 +47,7 @@ struct clbk_data {
     int is_heart_beat; /**< heartbeat check */
 };
 
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
 #include "Callback.hpp"
-#else
-typedef void (* callback_handler) (clbk_data);
-#endif
 
 namespace upm {
 /**
@@ -80,11 +76,8 @@ namespace upm {
 class Pulsensor {
 
 public:
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
     Pulsensor(Callback *callback);
-#else
-    Pulsensor(callback_handler handler);
-#endif
+
     void start_sampler();
     void stop_sampler();
 
@@ -106,11 +99,8 @@ private:
     uint8_t          second_beat; /**< Second heartbeat */
     uint8_t          ret; /**< Return value */
     mraa::Aio        pin_ctx; /**< The pin context */
-#if defined(SWIGJAVA) || defined(JAVACALLBACK)
+
     Callback *obj_callback; /**< The callback object */
-#else
-    callback_handler callback; /**< The callback function */
-#endif
     volatile uint16_t ctx_counter;
 };
 }

src/rgbringcoder/rgbringcoder.cxx

@@ -24,9 +24,6 @@
 
 #include <iostream>
 
-#ifdef JAVACALLBACK
-#undef JAVACALLBACK
-#endif
 #include "rgbringcoder.hpp"
 
 using namespace std;

src/sx1276/sx1276.cxx

@@ -29,10 +29,6 @@
 #include <string>
 #include <string.h>
 
-#ifdef JAVACALLBACK
-#undef JAVACALLBACK
-#endif
-
 #include "sx1276.hpp"
 
 using namespace upm;

src/upm.i

@@ -2,6 +2,7 @@
 %include "stdint.i"
 %include "upm_exception.i"
 
+/* Import additional SWIG helps (not exposed in wrapper) */
 %import _upm.i
 
 %{
@@ -16,19 +17,21 @@
 
 #if (SWIG_JAVASCRIPT_V8)
 %{
-	// Because there's no guarantee that v8 will ever call garbage collection,
-	// we're adding a function that will allow a user to call it manually
-	void cleanUp()
-	{
-		// Call the v8 garbage collector as long as there is memory to clean up
-		// See https://codereview.chromium.org/412163003 for this API change
+/* Because there's no guarantee that v8 will ever call garbage collection,
+ * we're adding a function that will allow a user to call it manually
+ */
+void cleanUp()
+{
+    /* Call the v8 garbage collector as long as there is memory to clean up
+     * See https://codereview.chromium.org/412163003 for this API change
+     */
 #if (SWIG_V8_VERSION < 0x032838)
-		while (!v8::V8::IdleNotification())
+    while (!v8::V8::IdleNotification())
 #else
-		while (!v8::Isolate::GetCurrent()->IdleNotification(1000))
+    while (!v8::Isolate::GetCurrent()->IdleNotification(1000))
 #endif
-		{;}
-	}
+    {;}
+}
 %}
 void cleanUp();
 #endif

src/wheelencoder/wheelencoder.cxx

@@ -24,9 +24,6 @@
 
 #include <iostream>
 
-#ifdef JAVACALLBACK
-#undef JAVACALLBACK
-#endif
 #include "wheelencoder.hpp"
 
 using namespace upm;