phabel/php-parser
1
0
Fork 0
mirror of https://github.com/phabelio/PHP-Parser.git synced 2025-01-22 13:21:12 +01:00
Code Issues Projects Releases Wiki Activity
php-parser/grammar
History
Nikita Popov 588e6a4d4c Add string kinds and doc string labels 
Scalar\String_ and Scalar\Encapsed now have an additional "kind"
attribute, which may be one of:

 * String_::KIND_SINGLE_QUOTED
 * String_::KIND_DOUBLE_QUOTED
 * String_::KIND_NOWDOC
 * String_::KIND_HEREDOC

Additionally, if the string kind is one of the latter two, an
attribute "docLabel" is provided, which contains the doc string
label (STR in <<<STR) that was originally used.

The pretty printer will try to take the original kind of the string,
as well as the used doc string label into account.
2016-04-07 12:09:00 +09:00
..
analyze.php
Move parser to Parser\Php5
2015-05-02 22:50:11 +02:00
parser.template
Move token constants into separate class
2015-06-13 18:39:55 +02:00
php5.y
Add string kinds and doc string labels
2016-04-07 12:09:00 +09:00
php7.y
Add string kinds and doc string labels
2016-04-07 12:09:00 +09:00
README.md
Various docs fixes
2015-07-14 21:11:54 +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
  • analyze.php: Analyzes the grammer and outputs some info about it
  • 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.