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25 lines
1.4 KiB
Markdown
25 lines
1.4 KiB
Markdown
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What do all those files mean?
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=============================
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* `zend_language_parser.y`: Original PHP grammer this parser is based on
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* `zend_language_parser.pre.phpy`: PHP grammer written in a pseudo language, which is transformed
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into a proper `kmyacc` grammer using `preprocessor.php`
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* `zend_language_parser.phpy`: PHP grammer ready for `kmyacc`
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* `analyzer.php`: Analyzes the `.pre.phpy`-grammer and outputs some info about it
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* `preprocessor.php`: Transforms a `.pre.phpy` grammar into a `.phpy` grammar
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* `rebuildParser.php`: Builds the actual parser by calling `kmyacc`
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* `php.kmyacc`: A `kmyacc` parser prototype file for PHP
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* `y.output`: `kmyacc`s debug output
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.pre.phpy pseudo language
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=========================
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The `.pre.phpy` file is a normal grammer in `kmyacc` (`yacc`) style, with some transformations
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applied to it:
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* Nodes are created using the syntax `Name[subNode1: ..., subNode2: ...]`. This is transformed into
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`new PHPParser_Node_Name(array('subNode1' => ..., 'subNode2' => ...), #this->line)` (`#` is used
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instead of `$` because `$` is a reservered character in `kmyacc` grammars. It is later transformed
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back to `$`)
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* `Name::abc` is transformed to `PHPParser_Node_Name::abc`
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* Some function-like constructs are resolved (see `preprocessor.php` for a list)
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