Remove Param Sync

Parameter synchronization has been removed, favoring the usage
of PSR7 interfaces for exchange of data between routines and
routes if necessary, allowing the same controller splitting
technique.

Respect\Rest now uses Respect\Parameter for its Reflection
duties, and the main DispatchContext exposes a valid PSR11
container with its injectable dependencies.

Author: alganet

composer.json

@@ -22,10 +22,12 @@
     },
     "require": {
         "php": ">=8.5",
+        "psr/container": "^2.0",
         "psr/http-factory": "^1.0",
         "psr/http-message": "^2.0",
         "psr/http-server-handler": "^1.0",
-        "psr/http-server-middleware": "^1.0"
+        "psr/http-server-middleware": "^1.0",
+        "respect/parameter": "^1.0"
     },
     "require-dev": {
         "nyholm/psr7": "^1.8",

docs/README.md

@@ -220,7 +220,7 @@ $r3->get('/download/*', function(string $file, ResponseInterface $response) {
 ```
 
   1. Parameters are matched by type, not position. Mix them freely with route parameters.
-  2. This works with callback routes and class controller methods alike.
+  2. This works with callback routes, class controller methods, and routine callbacks alike.
 
 ## PSR-15 Integration
 
@@ -291,11 +291,9 @@ $r3->get('/documents/*', function($documentId) {
 ```
 
   1. This will match the route only if the callback on *when* is matched.
-  2. The `$documentId` param must have the same name in the action and the
-     condition (but does not need to appear in the same order).
+  2. Route parameters are passed positionally, matching the order of the `/*` segments.
   3. You can specify more than one parameter per condition callback.
   4. You can chain conditions: `when($cb1)->when($cb2)->when($etc)`
-  5. Conditions will also sync with parameters on bound classes and instance methods.
 
 This makes it possible to validate parameters using any custom routine and
 not just data types such as `int` or `string`.
@@ -324,7 +322,7 @@ $r3->get('/artists/*/albums/*', function($artistName, $albumName) {
 ```
 
   1. This will execute the callback defined with *by* before the route action.
-  2. Parameters are synced by name, not by order, like with `when`.
+  2. Route parameters are passed positionally, matching the order of the `/*` segments.
   3. You can specify more than one parameter per proxy callback.
   4. You can chain proxies: `by($cb1)->by($cb2)->by($etc)`
   5. A `return false` from a proxy will stop the execution of any following proxies
@@ -350,7 +348,6 @@ $r3->post('/artists/*/albums/*', function($artistName, $albumName) {
   1. `by` proxies will be executed before the route action, `through` proxies
      will be executed after.
   2. You are free to use them separately or in tandem.
-  3. `through` can also receive parameters by name.
 
 When processing something after the route has run, it's often desirable to process
 its output as well. This can be achieved with a nested closure:
@@ -386,23 +383,6 @@ A simple way of applying routines to every route on the router is:
 $r3->always('By', $logRoutine);
 ```
 
-You can use the param sync to take advantage of this:
-```php
-$r3->always('When', function($user=null) {
-    if ($user) {
-        return strlen($user) > 3;
-    }
-});
-
-$r3->any('/products', function () { /***/ });
-$r3->any('/users/*', function ($user) { /***/ });
-$r3->any('/users/*/products', function ($user) { /***/ });
-$r3->any('/listeners/*', function ($user) { /***/ });
-```
-
-Since there are three routes with the `$user` parameter, `when` will
-verify them all automatically by name.
-
 ## File Extensions
 
 Use the `fileExtension` routine to map URL extensions to response transformations:
@@ -556,7 +536,6 @@ appended to the route. Custom routines have the option of several different inte
 which can be implemented:
 
   * `IgnorableFileExtension` - Instructs the router to ignore the file extension in requests.
-  * `ParamSynced` - Syncs parameters with the route function/method.
   * `ProxyableBy` - Instructs the router to run method `by()` before the route.
   * `ProxyableThrough` - Instructs the router to run method `through()` after the route.
   * `ProxyableWhen` - Instructs the router to run method `when()` to validate the route match.

src/DispatchContext.php

@@ -4,15 +4,13 @@
 
 namespace Respect\Rest;
 
+use Psr\Container\ContainerInterface;
 use Psr\Http\Message\ResponseFactoryInterface;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
 use Psr\Http\Message\StreamFactoryInterface;
-use ReflectionFunctionAbstract;
-use ReflectionParameter;
+use Respect\Parameter\Resolver;
 use Respect\Rest\Routes\AbstractRoute;
-use Respect\Rest\Routines\ParamSynced;
-use Respect\Rest\Routines\Routinable;
 use Throwable;
 
 use function is_a;
@@ -23,7 +21,7 @@
 use function strtoupper;
 
 /** Internal routing context wrapping a PSR-7 server request */
-final class DispatchContext
+final class DispatchContext implements ContainerInterface
 {
     /** @var array<int, mixed> */
     public array $params = [];
@@ -53,6 +51,8 @@ final class DispatchContext
     /** @var array<int, AbstractRoute> */
     private array $sideRoutes = [];
 
+    private Resolver|null $resolver = null;
+
     public function __construct(
         public ServerRequestInterface $request,
         public ResponseFactoryInterface&StreamFactoryInterface $factory,
@@ -180,33 +180,6 @@ public function response(): ResponseInterface|null
         }
     }
 
-    /** @param array<int, mixed> $params */
-    public function routineCall(
-        string $type,
-        string $method,
-        Routinable $routine,
-        array &$params,
-        AbstractRoute $route,
-    ): mixed {
-        $reflection = $route->getTargetReflection($method);
-
-        $callbackParameters = [];
-
-        if (!$routine instanceof ParamSynced) {
-            $callbackParameters = $params;
-        } elseif ($reflection !== null) {
-            foreach ($routine->getParameters() as $parameter) {
-                $callbackParameters[] = $this->extractRouteParam(
-                    $reflection,
-                    $parameter,
-                    $params,
-                );
-            }
-        }
-
-        return $routine->{$type}($this, $callbackParameters);
-    }
-
     public function forward(AbstractRoute $route): ResponseInterface|null
     {
         $this->route = $route;
@@ -230,6 +203,30 @@ public function setResponder(Responder $responder): void
         $this->responder = $responder;
     }
 
+    public function resolver(): Resolver
+    {
+        return $this->resolver ??= new Resolver($this);
+    }
+
+    public function has(string $id): bool
+    {
+        return is_a($id, ServerRequestInterface::class, true)
+            || is_a($id, ResponseInterface::class, true);
+    }
+
+    public function get(string $id): mixed
+    {
+        if (is_a($id, ServerRequestInterface::class, true)) {
+            return $this->request;
+        }
+
+        if (is_a($id, ResponseInterface::class, true)) {
+            return $this->factory->createResponse();
+        }
+
+        return null;
+    }
+
     /** @return callable|null The previous error handler, or null */
     protected function prepareForErrorForwards(AbstractRoute $route): callable|null
     {
@@ -310,28 +307,6 @@ protected function forwardToStatusRoute(ResponseInterface $preparedResponse): Re
         return null;
     }
 
-    /** @param array<int, mixed> $params */
-    protected function extractRouteParam(
-        ReflectionFunctionAbstract $callback,
-        ReflectionParameter $routeParam,
-        array &$params,
-    ): mixed {
-        foreach ($callback->getParameters() as $callbackParamReflection) {
-            if (
-                $callbackParamReflection->getName() === $routeParam->getName()
-                && isset($params[$callbackParamReflection->getPosition()])
-            ) {
-                return $params[$callbackParamReflection->getPosition()];
-            }
-        }
-
-        if ($routeParam->isDefaultValueAvailable()) {
-            return $routeParam->getDefaultValue();
-        }
-
-        return null;
-    }
-
     protected function finalizeResponse(mixed $response): ResponseInterface
     {
         return $this->responder()->finalize(

src/ResolvesCallbackArguments.php

@@ -7,7 +7,6 @@
 use ReflectionClass;
 use ReflectionFunctionAbstract;
 use Respect\Rest\DispatchContext;
-use Respect\Rest\ResolvesCallbackArguments;
 use Respect\Rest\Routines\IgnorableFileExtension;
 use Respect\Rest\Routines\Routinable;
 use Respect\Rest\Routines\Unique;
@@ -55,8 +54,6 @@
 // phpcs:ignore SlevomatCodingStandard.Classes.SuperfluousAbstractClassNaming.SuperfluousPrefix
 abstract class AbstractRoute
 {
-    use ResolvesCallbackArguments;
-
     public const string CATCHALL_IDENTIFIER = '/**';
 
     public const array CORE_METHODS = ['GET', 'HEAD', 'POST', 'PUT', 'PATCH', 'DELETE'];
@@ -135,11 +132,6 @@ public function getTargetMethod(string $method): string
         return $method;
     }
 
-    public function getTargetReflection(string $method): ReflectionFunctionAbstract|null
-    {
-        return $this->getReflection($this->getTargetMethod($method));
-    }
-
     /** @param array<int, mixed> $params */
     public function dispatchTarget(string $method, array &$params, DispatchContext $context): mixed
     {

src/Routes/AbstractRoute.php

@@ -4,14 +4,11 @@
 
 namespace Respect\Rest\Routes;
 
-use Closure;
-use ReflectionFunction;
 use ReflectionFunctionAbstract;
-use ReflectionMethod;
+use Respect\Parameter\Resolver;
 use Respect\Rest\DispatchContext;
 
 use function array_merge;
-use function is_array;
 
 class Callback extends AbstractRoute
 {
@@ -31,11 +28,7 @@ public function __construct(
 
     public function getCallbackReflection(): ReflectionFunctionAbstract
     {
-        if (is_array($this->callback)) {
-            return new ReflectionMethod($this->callback[0], $this->callback[1]);
-        }
-
-        return new ReflectionFunction(Closure::fromCallable($this->callback));
+        return Resolver::reflectCallable($this->callback);
     }
 
     public function getReflection(string $method): ReflectionFunctionAbstract
@@ -51,7 +44,7 @@ public function getReflection(string $method): ReflectionFunctionAbstract
     public function runTarget(string $method, array &$params, DispatchContext $context): mixed
     {
         $reflection = $this->getReflection($method);
-        $args = $this->resolveCallbackArguments($reflection, array_merge($params, $this->arguments), $context);
+        $args = $context->resolver()->resolve($reflection, array_merge($params, $this->arguments));
 
         return ($this->callback)(...$args);
     }

src/Routes/Callback.php

@@ -97,7 +97,7 @@ protected function invokeTarget(object $target, string $method, array &$params,
     {
         $reflection = $this->getReflection($method);
         if ($reflection !== null) {
-            $args = $this->resolveCallbackArguments($reflection, $params, $context);
+            $args = $context->resolver()->resolve($reflection, $params);
 
             return $target->$method(...$args);
         }