PHP 7.2.0 Release Candidate 4 Released

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 synopsis

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 ;
/* Properties */
public integer $action = 0 ;
public integer $reduceId = 0 ;
/* Methods */
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 right ( string $tok )
public string sigil ([ integer $idx ] )
public void token ( string $tok )
public int tokenId ( string $tok )
public string trace ( void )
public bool validate ( string $data , Parle\Lexer $lexer )
}

Predefined Constants

Parle\Parser::ACTION_ERROR

Parle\Parser::ACTION_SHIFT

Parle\Parser::ACTION_REDUCE

Parle\Parser::ACTION_GOTO

Parle\Parser::ACTION_ACCEPT

Parle\Parser::ERROR_SYNTAX

Parle\Parser::ERROR_NON_ASSOCIATIVE

Parle\Parser::ERROR_UNKOWN_TOKEN

Properties

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.

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