#ifndef EXAMPLE_SWIG_ApI_H_
#define EXAMPLE_SWIG_ApI_H_
// This file is essentially a small unit test for the swig cmake scripts and the java array
// classes. All it does it define a few simple functions for writing to and summing
// arrays. The swig_test.java file then calls these C++ functions and checks if they work
// correctly.
// Let's use java_array.h, a tool for efficiently binding java native arrays to C++
// function arguments. You do this by putting this pair of include statements in your
// swig_api.h file. Then after that you can use the java::array, java::array_view, and
// java::array_view_crit classes.
#include <dlib/java/java_array.h>
#ifdef SWIG
%include <dlib/java/java_array.h>
#endif
using namespace java;
// SWIG can't expose templated functions to java. We declare these here as helper
// functions to make the non-templated routines swig will expose easier to write. You can
// see these java exposed methods below (i.e. sum(), sum_crit(), assign(), and
// assign_crit()).
template <typename T>
T tsum(const array_view_crit<T>& arr)
{
T s = 0;
for (auto& v : arr)
s += v;
return s;
}
template <typename T>
T tsum(const array_view<T>& arr)
{
T s = 0;
for (auto& v : arr)
s += v;
return s;
}
template <typename T>
void tassign(T& arr)
{
for (size_t i = 0; i < arr.size(); ++i)
arr[i] = i;
}
// ----------------------------------------------------------------------------------------
// Now write some functions SWIG will expose to java. SWIG will automatically expose
// pretty much any non-template C++ code to java. So just by defining these functions here
// we expose them to java.
//
// All global C++ functions will appear in java as static member functions of class called
// "global", which is where these sum and assign routines will appear. You can see
// examples of java code that calls them in swig_test.java.
inline int sum_crit(const array_view_crit<int16_t>& arr) { return tsum(arr); }
inline int sum(const array_view<int16_t>& arr) { return tsum(arr); }
inline void assign_crit(array_view_crit<int16_t>& arr) { tassign(arr); }
inline void assign(array_view<int16_t>& arr) { tassign(arr); }
inline int sum_crit(const array_view_crit<int32_t>& arr) { return tsum(arr); }
inline int sum(const array_view<int32_t>& arr) { return tsum(arr); }
inline void assign_crit(array_view_crit<int32_t>& arr) { tassign(arr); }
inline void assign(array_view<int32_t>& arr) { tassign(arr); }
inline int sum_crit(const array_view_crit<int64_t>& arr) { return tsum(arr); }
inline int sum(const array_view<int64_t>& arr) { return tsum(arr); }
inline void assign_crit(array_view_crit<int64_t>& arr) { tassign(arr); }
inline void assign(array_view<int64_t>& arr) { tassign(arr); }
inline int sum_crit(const array_view_crit<char>& arr) { return tsum(arr); }
inline int sum(const array_view<char>& arr) { return tsum(arr); }
inline void assign_crit(array_view_crit<char>& arr) { tassign(arr); }
inline void assign(array_view<char>& arr) { tassign(arr); }
inline double sum_crit(const array_view_crit<double>& arr) { return tsum(arr); }
inline double sum(const array_view<double>& arr) { return tsum(arr); }
inline void assign_crit(array_view_crit<double>& arr) { tassign(arr); }
inline void assign(array_view<double>& arr) { tassign(arr); }
inline float sum_crit(array<float> arr)
{
array_view_crit<float> a(arr);
return tsum(a);
}
inline float sum(const array<float>& arr)
{
array_view<float> a(arr);
return tsum(a);
}
inline void assign_crit(array_view_crit<float>& arr) { tassign(arr); }
inline void assign(array<float>& arr)
{
array_view<float> a(arr);
tassign(a);
}
array<int32_t> make_an_array(size_t s)
{
array<int32_t> arr(s);
array_view_crit<int32_t> a(arr);
for (size_t i = 0; i < a.size(); ++i)
a[i] = i;
return arr;
}
// ----------------------------------------------------------------------------------------
#endif // EXAMPLE_SWIG_ApI_H_