mirror of https://github.com/nikic/PHP-Parser.git synced 2025-01-29 13:17:36 +01:00

History

Nikita Popov 977cbab8e7 Decrement errorState when recovering from -> error

It's likely that an error after -> will trigger another one due to
missing semicolon without shifting a single token. We prevent an
immediate failure in this case by manually setting errorState to 2,
which will suppress the duplicate error message, but allow error
recovery.

2016-07-25 17:37:54 +02:00

parser.template

Move token constants into separate class

2015-06-13 18:39:55 +02:00

php5.y

Decrement errorState when recovering from -> error

2016-07-25 17:37:54 +02:00

php7.y

Decrement errorState when recovering from -> error

2016-07-25 17:37:54 +02:00

README.md

Remove analyze.php

2016-07-25 13:38:05 +02:00

rebuildParsers.php

Add string kinds and doc string labels

2016-04-07 12:09:00 +09:00

tokens.template

Move token constants into separate class

2015-06-13 18:39:55 +02:00

tokens.y

Implement generalized yield operator

2015-06-13 18:11:40 +02:00

README.md

What do all those files mean?

php5.y: PHP 5 grammar written in a pseudo language
php7.y: PHP 7 grammar written in a pseudo language
tokens.y: Tokens definition shared between PHP 5 and PHP 7 grammars
parser.template: A kmyacc parser prototype file for PHP
tokens.template: A kmyacc prototype file for the Tokens class
rebuildParser.php: Preprocesses the grammar and builds the parser using kmyacc

.phpy pseudo language

The .y file is a normal grammer in kmyacc (yacc) style, with some transformations applied to it:

Nodes are created using the syntax Name[..., ...]. This is transformed into new Name(..., ..., attributes())
Some function-like constructs are resolved (see rebuildParser.php for a list)

Building the parser

In order to rebuild the parser, you need moriyoshi's fork of kmyacc. After you compiled/installed it, run the rebuildParser.php script.

By default only the Parser.php is built. If you want to additionally emit debug symbols and create y.output, run the script with --debug. If you want to retain the preprocessed grammar pass --keep-tmp-grammar.