parle lex parse test

parle_test.php

<?php

use Parle\{Lexer,Parser,Token,Stack};


$p = new Parser();

/***
 a=1;
 b=2;

 ...
 sum = 3
 */

$p->token("W N F '='");

$p->push("start","exps");

$f['es']=$p->push("exps","exps exp");

$p->push("exps","exp");


$f['e']=$p->push("exp","W '=' N F");


$p->build();


//exit;

$lex = new Lexer();

$lex->push("[0-9]+",$p->tokenId('N'));
$lex->push("[a-z]+",$p->tokenId('W'));
$lex->push("[;]",$p->tokenId('F'));
$lex->push("[=]",$p->tokenId("'='"));
$lex->push("[ \t\n]",Token::SKIP);


$lex->build();

$p->dump();


$in = "a=1;b=2;c=3;d=4;";

if(!$p->validate($in,$lex)){

    print_r
    (
        $p->errorinfo()
    )
    ;
}
 
 

$p->consume($in,$lex);

$s = new Stack();

do{

 
    if($p->action==2){
    //    print_r($p->sigil());

    if($p->reduceId==$f['e']){
        $s->push($p->sigil(2));
    }

    if($p->reduceId==$f['es']){
        //   $s->push($p->sigil(2));

        print_r([
            $s,$p->sigil(1)
        ]);
        $top = $s->top;
        $s->pop();

        $s->top += $top; 

    }


    }
  


    $p->advance();


}while( !in_array($p->action,[0,4]));

print_r($s);