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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  *
  6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  7:  *
  8:  * For the full copyright and license information, please view
  9:  * the file license.txt that was distributed with this source code.
 10:  */
 11: 
 12: namespace Nette\Config;
 13: 
 14: use Nette,
 15:     Nette\Utils\Validators;
 16: 
 17: 
 18: 
 19: /**
 20:  * DI container compiler.
 21:  *
 22:  * @author     David Grudl
 23:  *
 24:  * @property-read array $extensions
 25:  * @property-read Nette\DI\ContainerBuilder $containerBuilder
 26:  * @property-read array $config
 27:  */
 28: class Compiler extends Nette\Object
 29: {
 30:     /** @var array of CompilerExtension */
 31:     private $extensions = array();
 32: 
 33:     /** @var Nette\DI\ContainerBuilder */
 34:     private $container;
 35: 
 36:     /** @var array */
 37:     private $config;
 38: 
 39:     /** @var array reserved section names */
 40:     private static $reserved = array('services' => 1, 'factories' => 1, 'parameters' => 1);
 41: 
 42: 
 43: 
 44:     /**
 45:      * Add custom configurator extension.
 46:      * @return Compiler  provides a fluent interface
 47:      */
 48:     public function addExtension($name, CompilerExtension $extension)
 49:     {
 50:         if (isset(self::$reserved[$name])) {
 51:             throw new Nette\InvalidArgumentException("Name '$name' is reserved.");
 52:         }
 53:         $this->extensions[$name] = $extension->setCompiler($this, $name);
 54:         return $this;
 55:     }
 56: 
 57: 
 58: 
 59:     /**
 60:      * @return array
 61:      */
 62:     public function getExtensions()
 63:     {
 64:         return $this->extensions;
 65:     }
 66: 
 67: 
 68: 
 69:     /**
 70:      * @return Nette\DI\ContainerBuilder
 71:      */
 72:     public function getContainerBuilder()
 73:     {
 74:         return $this->container;
 75:     }
 76: 
 77: 
 78: 
 79:     /**
 80:      * Returns configuration without expanded parameters.
 81:      * @return array
 82:      */
 83:     public function getConfig()
 84:     {
 85:         return $this->config;
 86:     }
 87: 
 88: 
 89: 
 90:     /**
 91:      * @return string
 92:      */
 93:     public function compile(array $config, $className, $parentName)
 94:     {
 95:         $this->config = $config;
 96:         $this->container = new Nette\DI\ContainerBuilder;
 97:         $this->processParameters();
 98:         $this->processExtensions();
 99:         $this->processServices();
100:         return $this->generateCode($className, $parentName);
101:     }
102: 
103: 
104: 
105:     public function processParameters()
106:     {
107:         if (isset($this->config['parameters'])) {
108:             $this->container->parameters = $this->config['parameters'];
109:         }
110:     }
111: 
112: 
113: 
114:     public function processExtensions()
115:     {
116:         if ($extra = array_diff_key($this->config, self::$reserved, $this->extensions)) {
117:             $extra = implode("', '", array_keys($extra));
118:             throw new Nette\InvalidStateException("Found sections '$extra' in configuration, but corresponding extensions are missing.");
119:         }
120: 
121:         foreach ($this->extensions as $name => $extension) {
122:             $extension->loadConfiguration();
123:         }
124:     }
125: 
126: 
127: 
128:     public function processServices()
129:     {
130:         $this->parseServices($this->container, $this->config);
131: 
132:         foreach ($this->extensions as $name => $extension) {
133:             $this->container->addDefinition($name)
134:                 ->setClass('Nette\DI\NestedAccessor', array('@container', $name))
135:                 ->setAutowired(FALSE);
136: 
137:             if (isset($this->config[$name])) {
138:                 $this->parseServices($this->container, $this->config[$name], $name);
139:             }
140:         }
141: 
142:         foreach ($this->container->getDefinitions() as $name => $def) {
143:             $factory = $name . 'Factory';
144:             if (!$def->shared && !$def->internal && !$this->container->hasDefinition($factory)) {
145:                 $this->container->addDefinition($factory)
146:                     ->setClass('Nette\Callback', array('@container', 'create' . ucfirst($name)))
147:                     ->setAutowired(FALSE)
148:                     ->tags = $def->tags;
149:             }
150:         }
151:     }
152: 
153: 
154: 
155:     public function generateCode($className, $parentName)
156:     {
157:         foreach ($this->extensions as $extension) {
158:             $extension->beforeCompile();
159:         }
160: 
161:         $classes[] = $class = $this->container->generateClass($parentName);
162:         $class->setName($className)
163:             ->addMethod('initialize');
164: 
165:         foreach ($this->extensions as $extension) {
166:             $extension->afterCompile($class);
167:         }
168: 
169:         $defs = $this->container->getDefinitions();
170:         ksort($defs);
171:         foreach (array_reverse($defs, TRUE) as $name => $def) {
172:             if ($def->class === 'Nette\DI\NestedAccessor' && ($list = preg_grep('#^'.$name.'_#i', array_keys($defs)))) {
173:                 $def->class = $className . '_' . $name;
174:                 $class->documents = preg_replace("#\S+(?= \\$$name$)#", $def->class, $class->documents);
175:                 $classes[] = $accessor = new Nette\Utils\PhpGenerator\ClassType($def->class);
176:                 foreach ($list as $item) {
177:                     $short = substr($item, strlen($name)  + 1);
178:                     $accessor->addDocument($defs[$item]->shared
179:                         ? "@property {$defs[$item]->class} \$$short"
180:                         : "@method {$defs[$item]->class} create" . ucfirst("$short()"));
181:                 }
182:             }
183:         }
184: 
185:         return implode("\n\n\n", $classes);
186:     }
187: 
188: 
189: 
190:     /********************* tools ****************d*g**/
191: 
192: 
193: 
194:     /**
195:      * Parses section 'services' from configuration file.
196:      * @return void
197:      */
198:     public static function parseServices(Nette\DI\ContainerBuilder $container, array $config, $namespace = NULL)
199:     {
200:         $services = isset($config['services']) ? $config['services'] : array();
201:         $factories = isset($config['factories']) ? $config['factories'] : array();
202:         if ($tmp = array_intersect_key($services, $factories)) {
203:             $tmp = implode("', '", array_keys($tmp));
204:             throw new Nette\DI\ServiceCreationException("It is not allowed to use services and factories with the same names: '$tmp'.");
205:         }
206: 
207:         $all = $services + $factories;
208:         uasort($all, function($a, $b) {
209:             return strcmp(Helpers::isInheriting($a), Helpers::isInheriting($b));
210:         });
211: 
212:         foreach ($all as $name => $def) {
213:             $shared = array_key_exists($name, $config['services']);
214:             $name = ($namespace ? $namespace . '_' : '') . $name;
215: 
216:             if (($parent = Helpers::takeParent($def)) && $parent !== $name) {
217:                 $container->removeDefinition($name);
218:                 $definition = $container->addDefinition($name);
219:                 if ($parent !== Helpers::OVERWRITE) {
220:                     foreach ($container->getDefinition($parent) as $k => $v) {
221:                         $definition->$k = $v;
222:                     }
223:                 }
224:             } elseif ($container->hasDefinition($name)) {
225:                 $definition = $container->getDefinition($name);
226:                 if ($definition->shared !== $shared) {
227:                     throw new Nette\DI\ServiceCreationException("It is not allowed to use service and factory with the same name '$name'.");
228:                 }
229:             } else {
230:                 $definition = $container->addDefinition($name);
231:             }
232:             try {
233:                 static::parseService($definition, $def, $shared);
234:             } catch (\Exception $e) {
235:                 throw new Nette\DI\ServiceCreationException("Service '$name': " . $e->getMessage(), NULL, $e);
236:             }
237:         }
238:     }
239: 
240: 
241: 
242:     /**
243:      * Parses single service from configuration file.
244:      * @return void
245:      */
246:     public static function parseService(Nette\DI\ServiceDefinition $definition, $config, $shared = TRUE)
247:     {
248:         if ($config === NULL) {
249:             return;
250:         } elseif (!is_array($config)) {
251:             $config = array('class' => NULL, 'factory' => $config);
252:         }
253: 
254:         $known = $shared
255:             ? array('class', 'factory', 'arguments', 'setup', 'autowired', 'run', 'tags')
256:             : array('class', 'factory', 'arguments', 'setup', 'tags', 'internal', 'parameters');
257: 
258:         if ($error = array_diff(array_keys($config), $known)) {
259:             throw new Nette\InvalidStateException("Unknown key '" . implode("', '", $error) . "' in definition of service.");
260:         }
261: 
262:         $arguments = array();
263:         if (array_key_exists('arguments', $config)) {
264:             Validators::assertField($config, 'arguments', 'array');
265:             $arguments = self::filterArguments($config['arguments']);
266:             $definition->setArguments($arguments);
267:         }
268: 
269:         if (array_key_exists('class', $config) || array_key_exists('factory', $config)) {
270:             $definition->class = NULL;
271:             $definition->factory = NULL;
272:         }
273: 
274:         if (array_key_exists('class', $config)) {
275:             Validators::assertField($config, 'class', 'string|stdClass|null');
276:             if ($config['class'] instanceof \stdClass) {
277:                 $definition->setClass($config['class']->value, self::filterArguments($config['class']->attributes));
278:             } else {
279:                 $definition->setClass($config['class'], $arguments);
280:             }
281:         }
282: 
283:         if (array_key_exists('factory', $config)) {
284:             Validators::assertField($config, 'factory', 'callable|stdClass|null');
285:             if ($config['factory'] instanceof \stdClass) {
286:                 $definition->setFactory($config['factory']->value, self::filterArguments($config['factory']->attributes));
287:             } else {
288:                 $definition->setFactory($config['factory'], $arguments);
289:             }
290:         }
291: 
292:         if (isset($config['setup'])) {
293:             if (Helpers::takeParent($config['setup'])) {
294:                 $definition->setup = array();
295:             }
296:             Validators::assertField($config, 'setup', 'list');
297:             foreach ($config['setup'] as $id => $setup) {
298:                 Validators::assert($setup, 'callable|stdClass', "setup item #$id");
299:                 if ($setup instanceof \stdClass) {
300:                     Validators::assert($setup->value, 'callable', "setup item #$id");
301:                     if (strpos(is_array($setup->value) ? implode('', $setup->value) : $setup->value, '$') === FALSE) {
302:                         $definition->addSetup($setup->value, self::filterArguments($setup->attributes));
303:                     } else {
304:                         Validators::assert($setup->attributes, 'list:1', "setup arguments for '" . callback($setup->value) . "'");
305:                         $definition->addSetup($setup->value, $setup->attributes[0]);
306:                     }
307:                 } else {
308:                     $definition->addSetup($setup);
309:                 }
310:             }
311:         }
312: 
313:         $definition->setShared($shared);
314:         if (isset($config['parameters'])) {
315:             Validators::assertField($config, 'parameters', 'array');
316:             $definition->setParameters($config['parameters']);
317:         }
318: 
319:         if (isset($config['autowired'])) {
320:             Validators::assertField($config, 'autowired', 'bool|string');
321:             $definition->setAutowired($config['autowired']);
322:         }
323: 
324:         if (isset($config['internal'])) {
325:             Validators::assertField($config, 'internal', 'bool');
326:             $definition->setInternal($config['internal']);
327:         }
328: 
329:         if (isset($config['run'])) {
330:             $config['tags']['run'] = (bool) $config['run'];
331:         }
332: 
333:         if (isset($config['tags'])) {
334:             Validators::assertField($config, 'tags', 'array');
335:             if (Helpers::takeParent($config['tags'])) {
336:                 $definition->tags = array();
337:             }
338:             foreach ($config['tags'] as $tag => $attrs) {
339:                 if (is_int($tag) && is_string($attrs)) {
340:                     $definition->addTag($attrs);
341:                 } else {
342:                     $definition->addTag($tag, $attrs);
343:                 }
344:             }
345:         }
346:     }
347: 
348: 
349: 
350:     private static function filterArguments(array $args)
351:     {
352:         foreach ($args as $k => $v) {
353:             if ($v === '...') {
354:                 unset($args[$k]);
355:             } elseif ($v instanceof \stdClass && isset($v->value, $v->attributes)) {
356:                 $args[$k] = new Nette\DI\Statement($v->value, self::filterArguments($v->attributes));
357:             }
358:         }
359:         return $args;
360:     }
361: 
362: }
363: 
Nette Framework 2.0beta2 API API documentation generated by ApiGen 2.3.0