Download README.md (Doctrine Lexer)

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Doctrine Lexer Overview

Base library for a lexer that can be used in Recursive Descent Parsers

PHP Doctrine Lexer parser library that can be used in Top-Down, Recursive Descent Parsers. This lexer is used in Doctrine Annotations and in Doctrine ORM (DQL). To write your own parser you just need to extend Doctrine\Common\Lexer\AbstractLexer and implement three abstract methods. These methods define the lexical catchable and non-catchable patterns and a method for returning the type of a token and filtering the value if necessary. The Lexer is responsible for giving you an API to walk across a string one character at a time and analyze the type of each character, value and position of each token in the string. The low level API of the lexer is pretty simple. The setInput($input) option sets the input data to be tokenized. The Lexer is immediately reset and the new input tokenized. And the option glimpse(), peeks at the next token, returns it and immediately resets the peek.

Additional Details for Doctrine Lexer

Programming Language

PHP

Registered

2021-06-03

Last Updated

2024-02-05

Maintainers

sf-editor1

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Doctrine Lexer