php-extended / php-lexer-object
A library that implements the php-extended/php-lexer-interface interface library.
7.0.6
2024-07-31 13:39 UTC
Requires
- php: >=8.0
- php-extended/php-charset-object: ^7
- php-extended/php-lexer-interface: ^7
Requires (Dev)
- dev-master
- 7.0.6
- 7.0.5
- 7.0.4
- 7.0.3
- 7.0.2
- 7.0.1
- 7.0.0
- 6.0.8
- 6.0.7
- 6.0.6
- 6.0.5
- 6.0.4
- 6.0.3
- 6.0.2
- 6.0.1
- 6.0.0
- 5.0.1
- 5.0.0
- 4.0.1
- 4.0.0
- 3.2.22
- 3.2.21
- 3.2.20
- 3.2.19
- 3.2.18
- 3.2.17
- 3.2.16
- 3.2.15
- 3.2.14
- 3.2.13
- 3.2.12
- 3.2.11
- 3.2.10
- 3.2.9
- 3.2.8
- 3.2.7
- 3.2.6
- 3.2.5
- 3.2.4
- 3.2.3
- 3.2.2
- 3.2.1
- 3.2.0
- 3.1.5
- 3.1.4
- 3.1.3
- 3.1.2
- 3.1.1
- 3.1.0
- 3.0.3
- 3.0.2
- 3.0.1
- 3.0.0
- 2.0.6
- 2.0.5
- 2.0.4
- 2.0.3
- 2.0.2
- 2.0.1
- 2.0.0
This package is auto-updated.
Last update: 2024-10-31 00:19:44 UTC
README
A library that implements the php-extended/php-lexer-interface interface library.
Installation
The installation of this library is made via composer and the autoloading of all classes of this library is made through their autoloader.
- Download
composer.phar
from their website. - Then run the following command to install this library as dependency :
php composer.phar php-extended/php-lexer-object ^7
Basic Usage
For example, to create a lexer that parses digits, you shoud do the following : (This will parse the equivalent of the regex ^\d+.\d+$ ; ignoring all the "junk" characters that may be anywhere in the stream (junk = not dot, not digit)
use PhpExtended\Lexer\LexerInterface;
use PhpExtended\Lexer\LexerFactory;
use PhpExtended\Lexer\LexerConfiguration;
class CONSTS {
const DIGIT = 1;
const DOT = 2;
const DIGITWDOT = 3;
const DIGITWTRAIL = 4;
}
$factory = new LexerFactory();
$config = new LexerConfiguration();
// parses all digits as class digit
$config->addMappings(LexerInterface::CLASS_DIGIT, CONSTS::DIGIT);
// parses all dots as class dot
$config->addMappings('.', CONSTS::DOT);
// a digit followed by a digit is still a digit
$config->addMerging(CONSTS::DIGIT, CONSTS::DIGIT, CONSTS::DIGIT);
// a digit followed by a dot is a digit-dot complex
$config->addMerging(CONSTS::DIGIT, CONSTS::DOT, CONSTS::DIGITWDOT);
// a digit-dot complex followed by a digit is a digit-with-trail complex
$config->addMerging(CONSTS::DIGITWDOT, CONSTS::DIGIT, CONSTS::DIGITWTRAIL);
// a digit-with-trail complex followed by a digit is still a digit-with-trail
$config->addMerging(CONSTS::DIGITWTRAIL, CONSTS::DIGIT, CONSTS::DIGITWTRAIL);
$data = '04972ifp.fhsà9300fd'; // the data 04972.9300 is hidden here
$lexer = $factory->createFromString($data, $config);
foreach($lexer as $lexeme)
{
echo "\t".$lexeme."\n";
// Code : 1 Line : 1 Column : 0 Data : 04972
// Code : -2 Line : 1 Column : 5 Data : ifp
// Code : 2 Line : 1 Column : 8 Data : .
// Code : -2 Line : 1 Column : 9 Data : fhsà
// Code : 1 Line : 1 Column : 14 Data : 9300
// Code : -2 Line : 1 Column : 18 Data : fd
}
$lexer = new CodeFilterLexer($lexer);
foreach($lexer as $lexeme)
{
echo "\t".$lexeme."\n";
// Code : 1 Line : 1 Column : 0 Data : 04972
// Code : 2 Line : 1 Column : 8 Data : .
// Code : 1 Line : 1 Column : 14 Data : 9300
}
$lexer = new LexerLexer($lexer, $config);
foreach($lexer as $lexeme)
{
echo "\t".$lexeme."\n";
// Code : 4 Line : 1 Column : 0 Data : 04972.9300
}
License
MIT (See license file).