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Home / vendor / nikic / php-parser / grammar
Name Modified Size InfoDownloads / Week
Parent folder
tokens.y 2017-07-31 2.5 kB
0
tokens.template 2017-07-31 298 Bytes
0
rebuildParsers.php 2017-07-31 8.9 kB
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php5.y 2017-07-31 49.8 kB
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php7.y 2017-07-31 45.0 kB
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parser.template 2017-07-31 2.2 kB
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README.md 2017-07-31 1.3 kB
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Totals: 7 Items   110.1 kB 0

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
  • rebuildParsers.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 rebuildParsers.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 rebuildParsers.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.

Source: README.md, updated 2017-07-31