2011-06-26 20:56:35 +02:00
|
|
|
What do all those files mean?
|
|
|
|
=============================
|
|
|
|
|
2015-06-13 18:39:55 +02:00
|
|
|
* `php5.y`: PHP 5 grammar written in a pseudo language
|
|
|
|
* `php7.y`: PHP 7 grammar written in a pseudo language
|
2015-07-14 21:11:54 +02:00
|
|
|
* `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
|
2015-05-02 22:50:11 +02:00
|
|
|
* `rebuildParser.php`: Preprocesses the grammar and builds the parser using `kmyacc`
|
2011-06-26 20:56:35 +02:00
|
|
|
|
2011-08-04 12:46:48 +02:00
|
|
|
.phpy pseudo language
|
2011-08-14 14:52:24 +02:00
|
|
|
=====================
|
2011-06-26 20:56:35 +02:00
|
|
|
|
2015-05-02 22:50:11 +02:00
|
|
|
The `.y` file is a normal grammer in `kmyacc` (`yacc`) style, with some transformations
|
2011-06-26 20:56:35 +02:00
|
|
|
applied to it:
|
|
|
|
|
2011-10-28 19:06:24 +02:00
|
|
|
* Nodes are created using the syntax `Name[..., ...]`. This is transformed into
|
2015-04-30 21:58:45 +02:00
|
|
|
`new Name(..., ..., attributes())`
|
2011-08-14 14:52:24 +02:00
|
|
|
* 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](https://github.com/moriyoshi/kmyacc-forked).
|
2012-10-19 19:11:47 +02:00
|
|
|
After you compiled/installed it, run the `rebuildParser.php` script.
|
2011-11-27 13:22:29 +01:00
|
|
|
|
2015-04-30 21:58:45 +02:00
|
|
|
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`.
|