benchmark.php

#!/usr/bin/php
<?php

require 'parser.php';

use rr\shunt\Parser;

function benchmark($term) {
  print "$term\n";
  
  $a = microtime(true);
  
  for ($i = 0; $i < 10000; ++$i)
    $r = eval("return $term;");
  
  print "native = $r : " . (microtime(true) - $a) . " (eval)\n";
  
  for ($i = 0; $i < 10000; ++$i) 
    $r = Parser::parse($term);
  
  print "parser = $r : " . (microtime(true) - $a) . "\n\n";
}

benchmark('1+1');
benchmark('-2*4/2');
benchmark('3+4*2/(1-5)*2*3');
benchmark('3+4*2/(1-5)*2*3+3+4*2/(1-5)*2*3');
benchmark('3+4*2/(1-5)*2*3+3+4*2/(1-5)*2*3*3+4*2/(1-5)*2*3+3+4*2/(1-5)*2*3');

benchmark('3.2+4.1*2.5/(1.1-5.4)*2.7*3.9+3.1+4.4*2.4/(1.1-5.5)*2.4*3.9*3.7+4.8*'
  . '2.3/(1.7-5.9)*2.4*3.1+3.2+4.6*2.8/(1.5-5.6)*2.1*3.9*3.2+4.1*2.5/(1.1-5.4)*'
  . '2.7*3.9+3.1+4.4*2.4/(1.1-5.5)*2.4*3.9*3.7+4.8*2.3/(1.7-5.9)*2.4*3.1+3.2+4.'
  . '6*2.8/(1.5-5.6)*2.1*3.9+6*2.8/(1.5-5.6)*2.1*3.9-6*2.8/(1.5-5.6)*2.1*3.9+1+'
  . '2.3/(1.7-5.9)*2.4*3.1+3.2+4.6*2.8/(1.5-5.6)*2.1*3.9*3.2+4.1*2.5/(1.1-5.4)*'
  . '2.7*3.9+3.1+4.4*2.4/(1.1-5.5)*2.4*3.9*3.7+4.8*2.3/(1.7-5.9)*2.4*3.1+3.2+4.'
  . '6*2.8/(1.5-5.6)*2.1*3.9+6*2.8/(1.5-5.6)*2.1*3.9-6*2.8/(1.5-5.6)*2.1*3.9+1');