mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-08-26 12:36:07 +02:00
673 lines
19 KiB
PHP
673 lines
19 KiB
PHP
<?php
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/**
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* A utility class which builds a manifest of all classes, interfaces and some
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* additional items present in a directory, and caches it.
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*
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* It finds the following information:
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* - Class and interface names and paths.
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* - All direct and indirect descendants of a class.
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* - All implementors of an interface.
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* - All module configuration files.
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*
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* @package framework
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* @subpackage manifest
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*/
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class SS_ClassManifest {
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const CONF_FILE = '_config.php';
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const CONF_DIR = '_config';
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protected $base;
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protected $tests;
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protected $cache;
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protected $cacheKey;
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protected $classes = array();
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protected $roots = array();
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protected $children = array();
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protected $descendants = array();
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protected $interfaces = array();
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protected $implementors = array();
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protected $configs = array();
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protected $configDirs = array();
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protected $traits = array();
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/**
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* @return TokenisedRegularExpression
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*/
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public static function get_class_parser() {
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return new TokenisedRegularExpression(array(
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0 => T_CLASS,
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1 => T_WHITESPACE,
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2 => array(T_STRING, 'can_jump_to' => array(7, 14), 'save_to' => 'className'),
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3 => T_WHITESPACE,
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4 => T_EXTENDS,
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5 => T_WHITESPACE,
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6 => array(T_STRING, 'save_to' => 'extends[]', 'can_jump_to' => 14),
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7 => T_WHITESPACE,
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8 => T_IMPLEMENTS,
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9 => T_WHITESPACE,
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10 => array(T_STRING, 'can_jump_to' => 14, 'save_to' => 'interfaces[]'),
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11 => array(T_WHITESPACE, 'optional' => true),
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12 => array(',', 'can_jump_to' => 10, 'save_to' => 'interfaces[]'),
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13 => array(T_WHITESPACE, 'can_jump_to' => 10),
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14 => array(T_WHITESPACE, 'optional' => true),
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15 => '{',
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));
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}
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/**
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* @return TokenisedRegularExpression
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*/
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public static function get_namespaced_class_parser() {
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return new TokenisedRegularExpression(array(
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0 => T_CLASS,
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1 => T_WHITESPACE,
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2 => array(T_STRING, 'can_jump_to' => array(8, 16), 'save_to' => 'className'),
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3 => T_WHITESPACE,
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4 => T_EXTENDS,
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5 => T_WHITESPACE,
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6 => array(T_NS_SEPARATOR, 'save_to' => 'extends[]', 'optional' => true),
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7 => array(T_STRING, 'save_to' => 'extends[]', 'can_jump_to' => array(6, 16)),
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8 => T_WHITESPACE,
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9 => T_IMPLEMENTS,
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10 => T_WHITESPACE,
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11 => array(T_NS_SEPARATOR, 'save_to' => 'interfaces[]', 'optional' => true),
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12 => array(T_STRING, 'can_jump_to' => array(11, 16), 'save_to' => 'interfaces[]'),
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13 => array(T_WHITESPACE, 'optional' => true),
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14 => array(',', 'can_jump_to' => 11, 'save_to' => 'interfaces[]'),
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15 => array(T_WHITESPACE, 'can_jump_to' => 11),
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16 => array(T_WHITESPACE, 'optional' => true),
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17 => '{',
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));
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}
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/**
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* @return TokenisedRegularExpression
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*/
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public static function get_trait_parser() {
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return new \TokenisedRegularExpression(array(
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0 => T_TRAIT,
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1 => T_WHITESPACE,
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2 => array(T_STRING, 'save_to' => 'traitName')
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));
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}
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/**
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* @return TokenisedRegularExpression
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*/
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public static function get_namespace_parser() {
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return new TokenisedRegularExpression(array(
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0 => T_NAMESPACE,
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1 => T_WHITESPACE,
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2 => array(T_NS_SEPARATOR, 'save_to' => 'namespaceName[]', 'optional' => true),
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3 => array(T_STRING, 'save_to' => 'namespaceName[]', 'can_jump_to' => 2),
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4 => array(T_WHITESPACE, 'optional' => true),
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5 => ';',
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));
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}
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/**
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* @return TokenisedRegularExpression
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*/
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public static function get_interface_parser() {
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return new TokenisedRegularExpression(array(
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0 => T_INTERFACE,
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1 => T_WHITESPACE,
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2 => array(T_STRING, 'save_to' => 'interfaceName')
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));
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}
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/**
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* Create a {@link TokenisedRegularExpression} that extracts the namespaces imported with the 'use' keyword
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*
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* This searches symbols for a `use` followed by 1 or more namespaces which are optionally aliased using the `as`
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* keyword. The relevant matching tokens are added one-by-one into an array (using `save_to` param).
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*
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* eg: use Namespace\ClassName as Alias, OtherNamespace\ClassName;
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*
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* @return TokenisedRegularExpression
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*/
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public static function get_imported_namespace_parser() {
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return new TokenisedRegularExpression(array(
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0 => T_USE,
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1 => T_WHITESPACE,
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2 => array(T_NS_SEPARATOR, 'save_to' => 'importString[]', 'optional' => true),
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3 => array(T_STRING, 'save_to' => 'importString[]', 'can_jump_to' => array(2, 8)),
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4 => array(T_WHITESPACE, 'save_to' => 'importString[]'),
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5 => array(T_AS, 'save_to' => 'importString[]'),
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6 => array(T_WHITESPACE, 'save_to' => 'importString[]'),
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7 => array(T_STRING, 'save_to' => 'importString[]'),
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8 => array(T_WHITESPACE, 'optional' => true),
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9 => array(',', 'save_to' => 'importString[]', 'optional' => true, 'can_jump_to' => 2),
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10 => array(T_WHITESPACE, 'optional' => true, 'can_jump_to' => 2),
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11 => ';',
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));
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}
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/**
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* Constructs and initialises a new class manifest, either loading the data
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* from the cache or re-scanning for classes.
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*
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* @param string $base The manifest base path.
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* @param bool $includeTests Include the contents of "tests" directories.
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* @param bool $forceRegen Force the manifest to be regenerated.
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* @param bool $cache If the manifest is regenerated, cache it.
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*/
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public function __construct($base, $includeTests = false, $forceRegen = false, $cache = true) {
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$this->base = $base;
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$this->tests = $includeTests;
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$cacheClass = defined('SS_MANIFESTCACHE') ? SS_MANIFESTCACHE : 'ManifestCache_File';
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$this->cache = new $cacheClass('classmanifest'.($includeTests ? '_tests' : ''));
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$this->cacheKey = 'manifest';
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if (!$forceRegen && $data = $this->cache->load($this->cacheKey)) {
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$this->classes = $data['classes'];
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$this->descendants = $data['descendants'];
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$this->interfaces = $data['interfaces'];
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$this->implementors = $data['implementors'];
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$this->configs = $data['configs'];
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$this->configDirs = $data['configDirs'];
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$this->traits = $data['traits'];
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} else {
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$this->regenerate($cache);
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}
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}
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/**
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* Returns the file path to a class or interface if it exists in the
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* manifest.
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*
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* @param string $name
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* @return string|null
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*/
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public function getItemPath($name) {
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$name = strtolower($name);
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if (isset($this->classes[$name])) {
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return $this->classes[$name];
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} elseif (isset($this->interfaces[$name])) {
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return $this->interfaces[$name];
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} elseif(isset($this->traits[$name])) {
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return $this->traits[$name];
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}
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}
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/**
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* Returns a map of lowercased class names to file paths.
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*
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* @return array
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*/
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public function getClasses() {
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return $this->classes;
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}
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/**
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* Returns a lowercase array of all the class names in the manifest.
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*
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* @return array
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*/
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public function getClassNames() {
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return array_keys($this->classes);
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}
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/**
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* Returns a lowercase array of all trait names in the manifest
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*
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* @return array
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*/
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public function getTraitNames() {
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return array_keys($this->traits);
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}
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/**
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* Returns an array of all the descendant data.
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*
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* @return array
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*/
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public function getDescendants() {
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return $this->descendants;
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}
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/**
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* Returns an array containing all the descendants (direct and indirect)
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* of a class.
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*
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* @param string|object $class
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* @return array
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*/
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public function getDescendantsOf($class) {
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if (is_object($class)) {
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$class = get_class($class);
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}
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$lClass = strtolower($class);
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if (array_key_exists($lClass, $this->descendants)) {
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return $this->descendants[$lClass];
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} else {
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return array();
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}
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}
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/**
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* Returns a map of lowercased interface names to file locations.
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*
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* @return array
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*/
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public function getInterfaces() {
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return $this->interfaces;
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}
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/**
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* Returns a map of lowercased interface names to the classes the implement
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* them.
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*
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* @return array
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*/
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public function getImplementors() {
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return $this->implementors;
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}
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/**
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* Returns an array containing the class names that implement a certain
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* interface.
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*
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* @param string $interface
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* @return array
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*/
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public function getImplementorsOf($interface) {
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$interface = strtolower($interface);
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if (array_key_exists($interface, $this->implementors)) {
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return $this->implementors[$interface];
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} else {
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return array();
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}
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}
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/**
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* Returns an array of paths to module config files.
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*
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* @return array
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*/
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public function getConfigs() {
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return $this->configs;
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}
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/**
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* Returns an array of module names mapped to their paths.
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*
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* "Modules" in SilverStripe are simply directories with a _config.php
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* file.
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*
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* @return array
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*/
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public function getModules() {
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$modules = array();
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if($this->configs) {
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foreach($this->configs as $configPath) {
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$modules[basename(dirname($configPath))] = dirname($configPath);
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}
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}
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if($this->configDirs) {
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foreach($this->configDirs as $configDir) {
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$path = preg_replace('/\/_config$/', '', dirname($configDir));
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$modules[basename($path)] = $path;
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}
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}
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return $modules;
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}
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/**
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* Used to set up files that we want to exclude from parsing for performance reasons.
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*/
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protected function setDefaults()
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{
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$this->classes['sstemplateparser'] = FRAMEWORK_PATH.'/view/SSTemplateParser.php';
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$this->classes['sstemplateparseexception'] = FRAMEWORK_PATH.'/view/SSTemplateParser.php';
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}
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/**
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* Completely regenerates the manifest file.
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*
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* @param bool $cache Cache the result.
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*/
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public function regenerate($cache = true) {
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$reset = array(
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'classes', 'roots', 'children', 'descendants', 'interfaces',
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'implementors', 'configs', 'configDirs', 'traits'
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);
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// Reset the manifest so stale info doesn't cause errors.
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foreach ($reset as $reset) {
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$this->$reset = array();
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}
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$this->setDefaults();
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$finder = new ManifestFileFinder();
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$finder->setOptions(array(
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'name_regex' => '/^(_config.php|[^_].*\.php)$/',
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'ignore_files' => array('index.php', 'main.php', 'cli-script.php', 'SSTemplateParser.php'),
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'ignore_tests' => !$this->tests,
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'file_callback' => array($this, 'handleFile'),
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'dir_callback' => array($this, 'handleDir')
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));
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$finder->find($this->base);
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foreach ($this->roots as $root) {
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$this->coalesceDescendants($root);
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}
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if ($cache) {
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$data = array(
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'classes' => $this->classes,
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'descendants' => $this->descendants,
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'interfaces' => $this->interfaces,
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'implementors' => $this->implementors,
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'configs' => $this->configs,
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'configDirs' => $this->configDirs,
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'traits' => $this->traits,
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);
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$this->cache->save($data, $this->cacheKey);
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}
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}
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public function handleDir($basename, $pathname, $depth) {
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if ($basename == self::CONF_DIR) {
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$this->configDirs[] = $pathname;
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}
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}
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/**
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* Find a the full namespaced declaration of a class (or interface) from a list of candidate imports
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*
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* This is typically used to determine the full class name in classes that have imported namesapced symbols (having
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* used the `use` keyword)
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*
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* NB: remember the '\\' is an escaped backslash and is interpreted as a single \
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*
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* @param string $class The class (or interface) name to find in the candidate imports
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* @param string $namespace The namespace that was declared for the classes definition (if there was one)
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* @param array $imports The list of imported symbols (Classes or Interfaces) to test against
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*
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* @return string The fully namespaced class name
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*/
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protected function findClassOrInterfaceFromCandidateImports($class, $namespace = '', $imports = array()) {
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//normalise the namespace
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$namespace = rtrim($namespace, '\\');
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//by default we'll use the $class as our candidate
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$candidateClass = $class;
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if (!$class) {
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return $candidateClass;
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}
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//if the class starts with a \ then it is explicitly in the global namespace and we don't need to do
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// anything else
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if (substr($class, 0, 1) == '\\') {
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$candidateClass = substr($class, 1);
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return $candidateClass;
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}
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//if there's a namespace, starting assumption is the class is defined in that namespace
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if ($namespace) {
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$candidateClass = $namespace . '\\' . $class;
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}
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if (empty($imports)) {
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return $candidateClass;
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}
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//normalised class name (PHP is case insensitive for symbols/namespaces
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$lClass = strtolower($class);
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//go through all the imports and see if the class exists within one of them
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foreach ($imports as $alias => $import) {
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//normalise import
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$import = trim($import, '\\');
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//if there is no string key, then there was no declared alias - we'll use the main declaration
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if (is_int($alias)) {
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$alias = strtolower($import);
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} else {
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$alias = strtolower($alias);
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}
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//exact match? Then it's a class in the global namespace that was imported OR it's an alias of
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// another namespace
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// or if it ends with the \ClassName then it's the class we are looking for
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if ($lClass == $alias
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|| substr_compare(
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$alias,
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'\\' . $lClass,
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strlen($alias) - strlen($lClass) - 1,
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// -1 because the $lClass length is 1 longer due to \
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strlen($alias)
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) === 0
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) {
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$candidateClass = $import;
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break;
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}
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}
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return $candidateClass;
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}
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/**
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* Return an array of array($alias => $import) from tokenizer's tokens of a PHP file
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*
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* NB: If there is no alias we don't set a key to the array
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*
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* @param array $tokens The parsed tokens from tokenizer's parsing of a PHP file
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*
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* @return array The array of imports as (optional) $alias => $import
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*/
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protected function getImportsFromTokens($tokens) {
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//parse out the imports
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$imports = self::get_imported_namespace_parser()->findAll($tokens);
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//if there are any imports, clean them up
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// imports come to us as array('importString' => array([array of matching tokens]))
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// we need to join this nested array into a string and split out the alias and the import
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if (!empty($imports)) {
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$cleanImports = array();
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foreach ($imports as $import) {
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if (!empty($import['importString'])) {
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//join the array up into a string
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$importString = implode('', $import['importString']);
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//split at , to get each import declaration
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$importSet = explode(',', $importString);
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foreach ($importSet as $importDeclaration) {
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//split at ' as ' (any case) to see if we are aliasing the namespace
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$importDeclaration = preg_split('/\s+as\s+/i', $importDeclaration);
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//shift off the fully namespaced import
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$qualifiedImport = array_shift($importDeclaration);
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//if there are still items in the array, it's the alias
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if (!empty($importDeclaration)) {
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$cleanImports[array_shift($importDeclaration)] = $qualifiedImport;
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}
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else {
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$cleanImports[] = $qualifiedImport;
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}
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}
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}
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}
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$imports = $cleanImports;
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}
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return $imports;
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}
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public function handleFile($basename, $pathname, $depth) {
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if ($basename == self::CONF_FILE) {
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$this->configs[] = $pathname;
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return;
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}
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$classes = null;
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$interfaces = null;
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$namespace = null;
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$imports = null;
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$traits = null;
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// The results of individual file parses are cached, since only a few
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// files will have changed and TokenisedRegularExpression is quite
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// slow. A combination of the file name and file contents hash are used,
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// since just using the datetime lead to problems with upgrading.
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$file = file_get_contents($pathname);
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$key = preg_replace('/[^a-zA-Z0-9_]/', '_', $basename) . '_' . md5($file);
|
|
|
|
$valid = false;
|
|
if ($data = $this->cache->load($key)) {
|
|
$valid = (
|
|
isset($data['classes']) && is_array($data['classes'])
|
|
&& isset($data['interfaces']) && is_array($data['interfaces'])
|
|
&& isset($data['namespace']) && is_string($data['namespace'])
|
|
&& isset($data['imports']) && is_array($data['imports'])
|
|
&& isset($data['traits']) && is_array($data['traits'])
|
|
);
|
|
|
|
if ($valid) {
|
|
$classes = $data['classes'];
|
|
$interfaces = $data['interfaces'];
|
|
$namespace = $data['namespace'];
|
|
$imports = $data['imports'];
|
|
$traits = $data['traits'];
|
|
}
|
|
}
|
|
|
|
if (!$valid) {
|
|
$tokens = token_get_all($file);
|
|
|
|
$classes = self::get_namespaced_class_parser()->findAll($tokens);
|
|
$traits = self::get_trait_parser()->findAll($tokens);
|
|
|
|
$namespace = self::get_namespace_parser()->findAll($tokens);
|
|
|
|
if($namespace) {
|
|
$namespace = implode('', $namespace[0]['namespaceName']);
|
|
} else {
|
|
$namespace = '';
|
|
}
|
|
|
|
$imports = $this->getImportsFromTokens($tokens);
|
|
|
|
$interfaces = self::get_interface_parser()->findAll($tokens);
|
|
|
|
$cache = array(
|
|
'classes' => $classes,
|
|
'interfaces' => $interfaces,
|
|
'namespace' => $namespace,
|
|
'imports' => $imports,
|
|
'traits' => $traits
|
|
);
|
|
$this->cache->save($cache, $key);
|
|
}
|
|
|
|
// Ensure namespace has no trailing slash, and namespaceBase does
|
|
$namespaceBase = '';
|
|
if ($namespace) {
|
|
$namespace = rtrim($namespace, '\\');
|
|
$namespaceBase = $namespace . '\\';
|
|
}
|
|
|
|
foreach ($classes as $class) {
|
|
$name = $namespaceBase . $class['className'];
|
|
$extends = isset($class['extends']) ? implode('', $class['extends']) : null;
|
|
$implements = isset($class['interfaces']) ? $class['interfaces'] : null;
|
|
|
|
if ($extends) {
|
|
$extends = $this->findClassOrInterfaceFromCandidateImports($extends, $namespace, $imports);
|
|
}
|
|
|
|
if (!empty($implements)) {
|
|
//join all the tokens
|
|
$implements = implode('', $implements);
|
|
//split at comma
|
|
$implements = explode(',', $implements);
|
|
//normalise interfaces
|
|
foreach ($implements as &$interface) {
|
|
$interface = $this->findClassOrInterfaceFromCandidateImports($interface, $namespace, $imports);
|
|
}
|
|
//release the var name
|
|
unset($interface);
|
|
}
|
|
|
|
$lowercaseName = strtolower($name);
|
|
if (array_key_exists($lowercaseName, $this->classes)) {
|
|
throw new Exception(sprintf(
|
|
'There are two files containing the "%s" class: "%s" and "%s"',
|
|
$name, $this->classes[$lowercaseName], $pathname
|
|
));
|
|
}
|
|
|
|
$this->classes[$lowercaseName] = $pathname;
|
|
|
|
if ($extends) {
|
|
$extends = strtolower($extends);
|
|
|
|
if (!isset($this->children[$extends])) {
|
|
$this->children[$extends] = array($name);
|
|
} else {
|
|
$this->children[$extends][] = $name;
|
|
}
|
|
} else {
|
|
$this->roots[] = $name;
|
|
}
|
|
|
|
if ($implements) {
|
|
foreach ($implements as $interface) {
|
|
$interface = strtolower($interface);
|
|
|
|
if (!isset($this->implementors[$interface])) {
|
|
$this->implementors[$interface] = array($name);
|
|
} else {
|
|
$this->implementors[$interface][] = $name;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
foreach ($interfaces as $interface) {
|
|
$this->interfaces[strtolower($namespaceBase . $interface['interfaceName'])] = $pathname;
|
|
}
|
|
foreach ($traits as $trait) {
|
|
$this->traits[strtolower($namespaceBase . $trait['traitName'])] = $pathname;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Recursively coalesces direct child information into full descendant
|
|
* information.
|
|
*
|
|
* @param string $class
|
|
* @return array
|
|
*/
|
|
protected function coalesceDescendants($class) {
|
|
$result = array();
|
|
$lClass = strtolower($class);
|
|
|
|
if (array_key_exists($lClass, $this->children)) {
|
|
$this->descendants[$lClass] = array();
|
|
|
|
foreach ($this->children[$lClass] as $class) {
|
|
$this->descendants[$lClass] = array_merge(
|
|
$this->descendants[$lClass],
|
|
array($class),
|
|
$this->coalesceDescendants($class)
|
|
);
|
|
}
|
|
|
|
return $this->descendants[$lClass];
|
|
} else {
|
|
return array();
|
|
}
|
|
}
|
|
|
|
}
|