The Parle\Parser class

(PECL parle >= 0.5.1)

简介

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

Parle\Parser {

/* Constants */

const integer ACTION_ERROR = 0 ;

const integer ACTION_SHIFT = 1 ;

const integer ACTION_REDUCE = 2 ;

const integer ACTION_GOTO = 3 ;

const integer ACTION_ACCEPT = 4 ;

const integer ERROR_SYNTAX = 0 ;

const integer ERROR_NON_ASSOCIATIVE = 1 ;

const integer ERROR_UNKOWN_TOKEN = 2 ;

/* 属性 */

public integer $action = 0 ;

public integer $reduceId = 0 ;

/* 方法 */

public advance ( void ) : void

public build ( void ) : void

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

public dump ( void ) : void

public errorInfo ( void ) : Parle\ErrorInfo

public left ( string $tok ) : void

public nonassoc ( string $tok ) : void

public precedence ( string $tok ) : void

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

public reset ([ int $tokenId ] ) : void

public right ( string $tok ) : void

public sigil ([ int $idx ] ) : string

public token ( string $tok ) : void

public tokenId ( string $tok ) : int

public trace ( void ) : string

public 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.