Initial commit

This commit is contained in:
Bassem Girgis
2018-12-20 17:34:07 -06:00
parent 7a2d899662
commit 81b4b9e273
34743 changed files with 5940233 additions and 0 deletions

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SRCS = example.cxx
include $(SRCDIR)../example.mk

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{
"targets": [
{
"target_name": "example",
"sources": [ "<!(cp $srcdir/example.cxx example-gypcopy.cxx && echo example-gypcopy.cxx)", "example_wrap.cxx" ],
"include_dirs": ["$srcdir"]
}
]
}

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/* File : example.cxx */
/* Deal with Microsoft's attempt at deprecating C standard runtime functions */
#if !defined(SWIG_NO_CRT_SECURE_NO_DEPRECATE) && defined(_MSC_VER)
# define _CRT_SECURE_NO_DEPRECATE
#endif
#include "example.h"
#include <stdio.h>
#include <stdlib.h>
Vector operator+(const Vector &a, const Vector &b) {
Vector r;
r.x = a.x + b.x;
r.y = a.y + b.y;
r.z = a.z + b.z;
return r;
}
char *Vector::print() {
static char temp[512];
sprintf(temp,"Vector %p (%g,%g,%g)", (void *)this, x,y,z);
return temp;
}
VectorArray::VectorArray(int size) {
items = new Vector[size];
maxsize = size;
}
VectorArray::~VectorArray() {
delete [] items;
}
Vector &VectorArray::operator[](int index) {
if ((index < 0) || (index >= maxsize)) {
printf("Panic! Array index out of bounds.\n");
exit(1);
}
return items[index];
}
int VectorArray::size() {
return maxsize;
}

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/* File : example.h */
class Vector {
private:
double x,y,z;
public:
Vector() : x(0), y(0), z(0) { }
Vector(double x, double y, double z) : x(x), y(y), z(z) { }
friend Vector operator+(const Vector &a, const Vector &b);
char *print();
};
class VectorArray {
private:
Vector *items;
int maxsize;
public:
VectorArray(int maxsize);
~VectorArray();
Vector &operator[](int);
int size();
};

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/* File : example.i */
/* This file has a few "typical" uses of C++ references. */
%module example
%{
#include "example.h"
%}
class Vector {
public:
Vector(double x, double y, double z);
~Vector();
char *print();
};
/* This helper function calls an overloaded operator */
%inline %{
Vector addv(Vector &a, Vector &b) {
return a+b;
}
%}
/* Wrapper around an array of vectors class */
class VectorArray {
public:
VectorArray(int maxsize);
~VectorArray();
int size();
/* This wrapper provides an alternative to the [] operator */
%extend {
Vector &get(int index) {
return (*$self)[index];
}
void set(int index, Vector &a) {
(*$self)[index] = a;
}
}
};

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module.exports = require("build/Release/example");

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// This file illustrates the manipulation of C++ references in Javascript.
var example = require("example");
// ----- Object creation -----
console.log("Creating some objects:");
a = new example.Vector(3,4,5);
b = new example.Vector(10,11,12);
console.log(" created" + a.print());
console.log(" created" + b.print());
// ----- Call an overloaded operator -----
// This calls the wrapper we placed around operator+(const Vector &a, const Vector &)
// It returns a new allocated object.
console.log("Adding a+b");
c = example.addv(a, b);
console.log("a+b = " + c.print());
// TODO: Note: Unless we free the result, a memory leak will occur
//delete_Vector(c);
// ----- Create a vector array -----
// Note: Using the high-level interface here
console.log("Creating an array of vectors");
va = new example.VectorArray(10);
console.log("va = " + va);
// ----- Set some values in the array -----
// These operators copy the value of a and b to the vector array
va.set(0,a);
va.set(1,b);
// This will work, but it will cause a memory leak!
va.set(2,example.addv(a,b));
// The non-leaky way to do it
//c = addv(a,b);
//va.set(3,c);
//delete_Vector(c);
// Get some values from the array
console.log("Getting some array values");
for (i = 0; i < 5; i++) {
temp = va.get(i);
console.log(i,temp.print());
}
// Watch under resource meter to check on this
console.log("Making sure we don't leak memory.");
for (i = 0; i < 1000000; i++) {
c = va.get(i % 10);
}
//---------TODO---------
//----- Clean up -----
//console.log("Cleaning up");
//example.delete_VectorArray(va);
//example.delete_Vector(a);
//example.delete_Vector(b);