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The Parle\Lexer class

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Single state lexer class. Lexemes can be defined on the fly. If the particular lexer instance is meant to be used with Parle\Parser, the token IDs need to be taken from there. Otherwise, arbitrary token IDs can be supplied. This lexer can give a certain performance advantage over Parle\RLexer, if no multiple states are required. Note, that Parle\RParser is not compatible with this lexer.

Intro

Single state lexer class. Lexemes can be defined on the fly. If the particular lexer instance is meant to be used with Parle\Parser, the token IDs need to be taken from there. Otherwise, arbitrary token IDs can be supplied. This lexer can give a certain performance advantage over Parle\RLexer, if no multiple states are required. Note, that Parle\RParser is not compatible with this lexer.

Class synopsis

class Parle\Lexer { }

Predefined Constants

Parle\Lexer::ICASE
Parle\Lexer::DOT_NOT_LF
Parle\Lexer::DOT_NOT_CRLF
Parle\Lexer::SKIP_WS
Parle\Lexer::MATCH_ZERO_LEN

Properties

bol: Start of input flag.
flags: Lexer flags.
state: Current lexer state, readonly.
marker: Position of the latest token match, readonly.
cursor: Current input offset, readonly.

Lexer

Source: reference/parle/parle.lexer.xml · from the official PHP manual (php/doc-en)