The Parle\Parser class

(PECL parle >= 0.5.1)

Introduction

Parser class. Rules can be defined on the fly. Once finalized, a Parle\Lexer instance is required to deliver the token stream.

class Parle\Parser {

/* Constants */

const int ACTION_ERROR = 0;

const int ACTION_SHIFT = 1;

const int ACTION_REDUCE = 2;

const int ACTION_GOTO = 3;

const int ACTION_ACCEPT = 4;

const int ERROR_SYNTAX = 0;

const int ERROR_NON_ASSOCIATIVE = 1;

const int ERROR_UNKNOWN_TOKEN = 2;

/* Properties */

public int $action = 0;

public int $reduceId = 0;

/* Methods */

public function advance(): void

public function build(): void

public function consume(string $data, Parle\Lexer $lexer): void

public function dump(): void

public function left(string $tok): void

public function nonassoc(string $tok): void

public function precedence(string $tok): void

public function push(string $name, string $rule): int

public function reset(int $tokenId = ?): void

public function right(string $tok): void

public function sigil(int $idx): string

public function sigilCount(): int

public function sigilName(int $idx): string

public function token(string $tok): void

public function tokenId(string $tok): int

public function trace(): string

public function validate(string $data, Parle\Lexer $lexer): bool

}

action: Current parser action that matches one of the action class constants, readonly.
reduceId: Grammar rule id just processed in the reduce action. The value corresponds either to a token or to a production id. Readonly.