PHP code example of hoa-math-community / compiler

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

hoa-math-community / compiler example snippets

// 1. Load grammar.
$compiler = Hoa\Compiler\Llk\Llk::load(new Hoa\File\Read('Json.pp'));

// 2. Parse a data.
$ast = $compiler->parse('{"foo": true, "bar": [null, 42]}');

// 3. Dump the AST.
$dump = new Hoa\Compiler\Visitor\Dump();
echo $dump->visit($ast);

/**
 * Will output:
 *     >  #object
 *     >  >  #pair
 *     >  >  >  token(string, foo)
 *     >  >  >  token(true, true)
 *     >  >  #pair
 *     >  >  >  token(string, bar)
 *     >  >  >  #array
 *     >  >  >  >  token(null, null)
 *     >  >  >  >  token(number, 42)
 */

$sampler = new Hoa\Compiler\Llk\Sampler\Coverage(
    // Grammar.
    Hoa\Compiler\Llk\Llk::load(new Hoa\File\Read('Json.pp')),
    // Token sampler.
    new Hoa\Regex\Visitor\Isotropic(new Hoa\Math\Sampler\Random())
);

foreach ($sampler as $i => $data) {
    echo $i, ' => ', $data, "\n";
}

/**
 * Will output:
 *     0 => true
 *     1 => {" )o?bz " : null , " %3W) " : [false, 130    , " 6"   ]  }
 *     2 => [{" ny  " : true } ]
 *     3 => {" Ne;[3 " :[ true , true ] , " th: " : true," C[8} " :   true }
 */

sh
$ echo '[1, [1, [2, 3], 5], 8]' | hoa compiler:pp Json.pp 0 --visitor dump
>  #array
>  >  token(number, 1)
>  >  #array
>  >  >  token(number, 1)
>  >  >  #array
>  >  >  >  token(number, 2)
>  >  >  >  token(number, 3)
>  >  >  token(number, 5)
>  >  token(number, 8)