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# file: runme.pl
# This file illustrates the manipulation of C++ references in Perl.
# This uses the low-level interface. Proxy classes work differently.
use example;
# ----- Object creation -----
print "Creating some objects:\n";
$a = example::new_Vector(3,4,5);
$b = example::new_Vector(10,11,12);
print " Created",example::Vector_print($a),"\n";
print " Created",example::Vector_print($b),"\n";
# ----- Call an overloaded operator -----
# This calls the wrapper we placed around
#
# operator+(const Vector &a, const Vector &)
#
# It returns a new allocated object.
print "Adding a+b\n";
$c = example::addv($a,$b);
print " a+b =", example::Vector_print($c),"\n";
# Note: Unless we free the result, a memory leak will occur
example::delete_Vector($c);
# ----- Create a vector array -----
# Note: Using the high-level interface here
print "Creating an array of vectors\n";
$va = example::new_VectorArray(10);
print " va = $va\n";
# ----- Set some values in the array -----
# These operators copy the value of $a and $b to the vector array
example::VectorArray_set($va,0,$a);
example::VectorArray_set($va,1,$b);
# This will work, but it will cause a memory leak!
example::VectorArray_set($va,2,example::addv($a,$b));
# The non-leaky way to do it
$c = example::addv($a,$b);
example::VectorArray_set($va,3,$c);
example::delete_Vector($c);
# Get some values from the array
print "Getting some array values\n";
for ($i = 0; $i < 5; $i++) {
print " va($i) = ", example::Vector_print(example::VectorArray_get($va,$i)), "\n";
}
# Watch under resource meter to check on this
print "Making sure we don't leak memory.\n";
for ($i = 0; $i < 1000000; $i++) {
$c = example::VectorArray_get($va,$i % 10);
}
# ----- Clean up -----
print "Cleaning up\n";
example::delete_VectorArray($va);
example::delete_Vector($a);
example::delete_Vector($b);
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