php-parse
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#!/usr/bin/env php
<?php
foreach ([__DIR__ . '/../../../autoload.php', __DIR__ . '/../vendor/autoload.php'] as $file) {
if (file_exists($file)) {
require $file;
break;
}
}
ini_set('xdebug.max_nesting_level', 3000);
// Disable XDebug var_dump() output truncation
ini_set('xdebug.var_display_max_children', -1);
ini_set('xdebug.var_display_max_data', -1);
ini_set('xdebug.var_display_max_depth', -1);
list($operations, $files, $attributes) = parseArgs($argv);
/* Dump nodes by default */
if (empty($operations)) {
$operations[] = 'dump';
}
if (empty($files)) {
showHelp("Must specify at least one file.");
}
$lexer = new PhpParser\Lexer\Emulative(array('usedAttributes' => array(
'startLine', 'endLine', 'startFilePos', 'endFilePos'
)));
$parser = (new PhpParser\ParserFactory)->create(PhpParser\ParserFactory::PREFER_PHP7, $lexer);
$dumper = new PhpParser\NodeDumper;
$prettyPrinter = new PhpParser\PrettyPrinter\Standard;
$serializer = new PhpParser\Serializer\XML;
$traverser = new PhpParser\NodeTraverser();
$traverser->addVisitor(new PhpParser\NodeVisitor\NameResolver);
foreach ($files as $file) {
if (strpos($file, '<?php') === 0) {
$code = $file;
echo "====> Code $code\n";
} else {
if (!file_exists($file)) {
die("File $file does not exist.\n");
}
$code = file_get_contents($file);
echo "====> File $file:\n";
}
try {
$stmts = $parser->parse($code);
} catch (PhpParser\Error $e) {
if ($attributes['with-column-info'] && $e->hasColumnInfo()) {
$startLine = $e->getStartLine();
$endLine = $e->getEndLine();
$startColumn = $e->getStartColumn($code);
$endColumn = $e->getEndColumn($code);
$message .= $e->getRawMessage() . " from $startLine:$startColumn to $endLine:$endColumn";
} else {
$message = $e->getMessage();
}
die($message . "\n");
}
foreach ($operations as $operation) {
if ('dump' === $operation) {
echo "==> Node dump:\n";
echo $dumper->dump($stmts), "\n";
} elseif ('pretty-print' === $operation) {
echo "==> Pretty print:\n";
echo $prettyPrinter->prettyPrintFile($stmts), "\n";
} elseif ('serialize-xml' === $operation) {
echo "==> Serialized XML:\n";
echo $serializer->serialize($stmts), "\n";
} elseif ('var-dump' === $operation) {
echo "==> var_dump():\n";
var_dump($stmts);
} elseif ('resolve-names' === $operation) {
echo "==> Resolved names.\n";
$stmts = $traverser->traverse($stmts);
}
}
}
function showHelp($error) {
die($error . "\n\n" .
<<<OUTPUT
Usage: php-parse [operations] file1.php [file2.php ...]
or: php-parse [operations] "<?php code"
Turn PHP source code into an abstract syntax tree.
Operations is a list of the following options (--dump by default):
-d, --dump Dump nodes using NodeDumper
-p, --pretty-print Pretty print file using PrettyPrinter\Standard
--serialize-xml Serialize nodes using Serializer\XML
--var-dump var_dump() nodes (for exact structure)
-N, --resolve-names Resolve names using NodeVisitor\NameResolver
-c, --with-column-info Show column-numbers for errors (if available)
Example:
php-parse -d -p -N -d file.php
Dumps nodes, pretty prints them, then resolves names and dumps them again.
OUTPUT
);
}
function parseArgs($args) {
$operations = array();
$files = array();
$attributes = array(
'with-column-info' => false,
);
array_shift($args);
$parseOptions = true;
foreach ($args as $arg) {
if (!$parseOptions) {
$files[] = $arg;
continue;
}
switch ($arg) {
case '--dump':
case '-d':
$operations[] = 'dump';
break;
case '--pretty-print':
case '-p':
$operations[] = 'pretty-print';
break;
case '--serialize-xml':
$operations[] = 'serialize-xml';
break;
case '--var-dump':
$operations[] = 'var-dump';
break;
case '--resolve-names':
case '-N';
$operations[] = 'resolve-names';
break;
case '--with-column-info':
case '-c';
$attributes['with-column-info'] = true;
break;
case '--':
$parseOptions = false;
break;
default:
if ($arg[0] === '-') {
showHelp("Invalid operation $arg.");
} else {
$files[] = $arg;
}
}
}
return array($operations, $files, $attributes);
}