mirror of
https://github.com/phabelio/PHP-Parser.git
synced 2024-11-30 04:29:15 +01:00
219 lines
6.6 KiB
PHP
219 lines
6.6 KiB
PHP
<?php
|
|
|
|
$grammarFile = __DIR__ . '/zend_language_parser.phpy';
|
|
$skeletonFile = __DIR__ . '/kmyacc.php.parser';
|
|
$tmpGrammarFile = __DIR__ . '/tmp_parser.phpy';
|
|
$tmpResultFile = __DIR__ . '/tmp_parser.php';
|
|
$parserResultFile = __DIR__ . '/../lib/PhpParser/Parser.php';
|
|
|
|
// check for kmyacc.exe binary in this directory, otherwise fall back to global name
|
|
$kmyacc = __DIR__ . '/kmyacc.exe';
|
|
if (!file_exists($kmyacc)) {
|
|
$kmyacc = 'kmyacc';
|
|
}
|
|
|
|
$options = array_flip($argv);
|
|
$optionDebug = isset($options['--debug']);
|
|
$optionKeepTmpGrammar = isset($options['--keep-tmp-grammar']);
|
|
|
|
///////////////////////////////
|
|
/// Utility regex constants ///
|
|
///////////////////////////////
|
|
|
|
const LIB = '(?(DEFINE)
|
|
(?<singleQuotedString>\'[^\\\\\']*+(?:\\\\.[^\\\\\']*+)*+\')
|
|
(?<doubleQuotedString>"[^\\\\"]*+(?:\\\\.[^\\\\"]*+)*+")
|
|
(?<string>(?&singleQuotedString)|(?&doubleQuotedString))
|
|
(?<comment>/\*[^*]*+(?:\*(?!/)[^*]*+)*+\*/)
|
|
(?<code>\{[^\'"/{}]*+(?:(?:(?&string)|(?&comment)|(?&code)|/)[^\'"/{}]*+)*+})
|
|
)';
|
|
|
|
const PARAMS = '\[(?<params>[^[\]]*+(?:\[(?¶ms)\][^[\]]*+)*+)\]';
|
|
const ARGS = '\((?<args>[^()]*+(?:\((?&args)\)[^()]*+)*+)\)';
|
|
|
|
///////////////////
|
|
/// Main script ///
|
|
///////////////////
|
|
|
|
echo 'Building temporary preproprocessed grammar file.', "\n";
|
|
|
|
$grammarCode = file_get_contents($grammarFile);
|
|
|
|
$grammarCode = resolveConstants($grammarCode);
|
|
$grammarCode = resolveNodes($grammarCode);
|
|
$grammarCode = resolveMacros($grammarCode);
|
|
$grammarCode = resolveArrays($grammarCode);
|
|
|
|
file_put_contents($tmpGrammarFile, $grammarCode);
|
|
|
|
$additionalArgs = $optionDebug ? '-t -v' : '';
|
|
|
|
echo "Building parser.\n";
|
|
$output = trim(shell_exec("$kmyacc $additionalArgs -l -m $skeletonFile $tmpGrammarFile 2>&1"));
|
|
echo "Output: \"$output\"\n";
|
|
|
|
moveFileWithDirCheck($tmpResultFile, $parserResultFile);
|
|
|
|
if (!$optionKeepTmpGrammar) {
|
|
unlink($tmpGrammarFile);
|
|
}
|
|
|
|
///////////////////////////////
|
|
/// Preprocessing functions ///
|
|
///////////////////////////////
|
|
|
|
function resolveConstants($code) {
|
|
return preg_replace('~[A-Z][a-zA-Z_\\\\]++::~', 'Node\\\\$0', $code);
|
|
}
|
|
|
|
function resolveNodes($code) {
|
|
return preg_replace_callback(
|
|
'~(?<name>[A-Z][a-zA-Z_\\\\]++)\s*' . PARAMS . '~',
|
|
function($matches) {
|
|
// recurse
|
|
$matches['params'] = resolveNodes($matches['params']);
|
|
|
|
$params = magicSplit(
|
|
'(?:' . PARAMS . '|' . ARGS . ')(*SKIP)(*FAIL)|,',
|
|
$matches['params']
|
|
);
|
|
|
|
$paramCode = '';
|
|
foreach ($params as $param) {
|
|
$paramCode .= $param . ', ';
|
|
}
|
|
|
|
return 'new Node\\' . $matches['name'] . '(' . $paramCode . '$attributes)';
|
|
},
|
|
$code
|
|
);
|
|
}
|
|
|
|
function resolveMacros($code) {
|
|
return preg_replace_callback(
|
|
'~\b(?<!::|->)(?!array\()(?<name>[a-z][A-Za-z]++)' . ARGS . '~',
|
|
function($matches) {
|
|
// recurse
|
|
$matches['args'] = resolveMacros($matches['args']);
|
|
|
|
$name = $matches['name'];
|
|
$args = magicSplit(
|
|
'(?:' . PARAMS . '|' . ARGS . ')(*SKIP)(*FAIL)|,',
|
|
$matches['args']
|
|
);
|
|
|
|
if ('error' == $name) {
|
|
assertArgs(1, $args, $name);
|
|
|
|
return 'throw new Error(' . $args[0] . ')';
|
|
}
|
|
|
|
if ('init' == $name) {
|
|
return '$$ = array(' . implode(', ', $args) . ')';
|
|
}
|
|
|
|
if ('push' == $name) {
|
|
assertArgs(2, $args, $name);
|
|
|
|
return $args[0] . '[] = ' . $args[1] . '; $$ = ' . $args[0];
|
|
}
|
|
|
|
if ('pushNormalizing' == $name) {
|
|
assertArgs(2, $args, $name);
|
|
|
|
return 'if (is_array(' . $args[1] . ')) { $$ = array_merge(' . $args[0] . ', ' . $args[1] . '); } else { ' . $args[0] . '[] = ' . $args[1] . '; $$ = ' . $args[0] . '; }';
|
|
}
|
|
|
|
if ('toArray' == $name) {
|
|
assertArgs(1, $args, $name);
|
|
|
|
return 'is_array(' . $args[0] . ') ? ' . $args[0] . ' : array(' . $args[0] . ')';
|
|
}
|
|
|
|
if ('parseVar' == $name) {
|
|
assertArgs(1, $args, $name);
|
|
|
|
return 'substr(' . $args[0] . ', 1)';
|
|
}
|
|
|
|
if ('parseEncapsed' == $name) {
|
|
assertArgs(2, $args, $name);
|
|
|
|
return 'foreach (' . $args[0] . ' as &$s) { if (is_string($s)) { $s = Node\Scalar\String::parseEscapeSequences($s, ' . $args[1] . '); } }';
|
|
}
|
|
|
|
if ('parseEncapsedDoc' == $name) {
|
|
assertArgs(1, $args, $name);
|
|
|
|
return 'foreach (' . $args[0] . ' as &$s) { if (is_string($s)) { $s = Node\Scalar\String::parseEscapeSequences($s, null); } } $s = preg_replace(\'~(\r\n|\n|\r)$~\', \'\', $s); if (\'\' === $s) array_pop(' . $args[0] . ');';
|
|
}
|
|
|
|
throw new Exception(sprintf('Unknown macro "%s"', $name));
|
|
},
|
|
$code
|
|
);
|
|
}
|
|
|
|
function assertArgs($num, $args, $name) {
|
|
if ($num != count($args)) {
|
|
die('Wrong argument count for ' . $name . '().');
|
|
}
|
|
}
|
|
|
|
function resolveArrays($code) {
|
|
return preg_replace_callback(
|
|
'~' . PARAMS . '~',
|
|
function ($matches) {
|
|
$elements = magicSplit(
|
|
'(?:' . PARAMS . '|' . ARGS . ')(*SKIP)(*FAIL)|,',
|
|
$matches['params']
|
|
);
|
|
|
|
// don't convert [] to array, it might have different meaning
|
|
if (empty($elements)) {
|
|
return $matches[0];
|
|
}
|
|
|
|
$elementCodes = array();
|
|
foreach ($elements as $element) {
|
|
// convert only arrays where all elements have keys
|
|
if (false === strpos($element, ':')) {
|
|
return $matches[0];
|
|
}
|
|
|
|
list($key, $value) = explode(':', $element, 2);
|
|
$elementCodes[] = "'" . $key . "' =>" . $value;
|
|
}
|
|
|
|
return 'array(' . implode(', ', $elementCodes) . ')';
|
|
},
|
|
$code
|
|
);
|
|
}
|
|
|
|
function moveFileWithDirCheck($fromPath, $toPath) {
|
|
$dir = dirname($toPath);
|
|
if (!is_dir($dir)) {
|
|
mkdir($dir, 0777, true);
|
|
}
|
|
rename($fromPath, $toPath);
|
|
}
|
|
|
|
//////////////////////////////
|
|
/// Regex helper functions ///
|
|
//////////////////////////////
|
|
|
|
function regex($regex) {
|
|
return '~' . LIB . '(?:' . str_replace('~', '\~', $regex) . ')~';
|
|
}
|
|
|
|
function magicSplit($regex, $string) {
|
|
$pieces = preg_split(regex('(?:(?&string)|(?&comment)|(?&code))(*SKIP)(*FAIL)|' . $regex), $string);
|
|
|
|
foreach ($pieces as &$piece) {
|
|
$piece = trim($piece);
|
|
}
|
|
|
|
return array_filter($pieces);
|
|
}
|