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 void advance ( void )

public void build ( void )

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

public void dump ( void )

public Parle\ErrorInfo errorInfo ( void )

public void left ( string $tok )

public void nonassoc ( string $tok )

public void precedence ( string $tok )

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

public void reset ([ int $tokenId ] )

public void right ( string $tok )

public string sigil ([ int $idx ] )

public void token ( string $tok )

public int tokenId ( string $tok )

public string trace ( void )

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

}

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.