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The Parle\Parser class

Contents

(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.

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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_UNKNOWN_TOKEN = 2 ;
/* Properties */
public integer $action = 0 ;
public integer $reduceId = 0 ;
/* Methods */
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
}

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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_UNKNOWN_TOKEN

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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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Document created the 30/01/2003, last modified the 26/10/2018
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References

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