Adjust according to feedback

src/Composer/DependencyResolver/DefaultPolicy.php

@@ -60,14 +60,14 @@ class DefaultPolicy implements PolicyInterface
         return $pool->getPriority($package->getRepository());
     }
 
-    public function selectPreferedPackages(Pool $pool, array $installedMap, array $literals, Rule $rule = null)
+    public function selectPreferedPackages(Pool $pool, array $installedMap, array $literals, $requiredPackage = null)
     {
         $packages = $this->groupLiteralsByNamePreferInstalled($pool, $installedMap, $literals);
 
         foreach ($packages as &$literals) {
             $policy = $this;
-            usort($literals, function ($a, $b) use ($policy, $pool, $installedMap, $rule) {
+            usort($literals, function ($a, $b) use ($policy, $pool, $installedMap, $requiredPackage) {
-                return $policy->compareByPriorityPreferInstalled($pool, $installedMap, $pool->literalToPackage($a), $pool->literalToPackage($b), $rule, true);
+                return $policy->compareByPriorityPreferInstalled($pool, $installedMap, $pool->literalToPackage($a), $pool->literalToPackage($b), $requiredPackage, true);
             });
         }
 
@@ -82,8 +82,8 @@ class DefaultPolicy implements PolicyInterface
         $selected = call_user_func_array('array_merge', $packages);
 
         // now sort the result across all packages to respect replaces across packages
-        usort($selected, function ($a, $b) use ($policy, $pool, $installedMap, $rule) {
+        usort($selected, function ($a, $b) use ($policy, $pool, $installedMap, $requiredPackage) {
-            return $policy->compareByPriorityPreferInstalled($pool, $installedMap, $pool->literalToPackage($a), $pool->literalToPackage($b), $rule);
+            return $policy->compareByPriorityPreferInstalled($pool, $installedMap, $pool->literalToPackage($a), $pool->literalToPackage($b), $requiredPackage);
         });
 
         return $selected;
@@ -112,7 +112,7 @@ class DefaultPolicy implements PolicyInterface
     /**
      * @protected
      */
-    public function compareByPriorityPreferInstalled(Pool $pool, array $installedMap, PackageInterface $a, PackageInterface $b, Rule $rule = null, $ignoreReplace = false)
+    public function compareByPriorityPreferInstalled(Pool $pool, array $installedMap, PackageInterface $a, PackageInterface $b, $requiredPackage = null, $ignoreReplace = false)
     {
         if ($a->getRepository() === $b->getRepository()) {
             // prefer aliases to the original package
@@ -138,15 +138,9 @@ class DefaultPolicy implements PolicyInterface
 
                 // for replacers not replacing each other, put a higher prio on replacing
                 // packages with the same vendor as the required package
-                if ($rule) {
+                if ($requiredPackage && false !== ($pos = strpos($requiredPackage, '/'))) {
-                    if ($rule->getReason() === Rule::RULE_JOB_INSTALL) {
+                    $requiredVendor = substr($requiredPackage, 0, $pos);
-                        $required = $rule->getReasonData();
-                    } elseif ($rule->getReason() === Rule::RULE_PACKAGE_REQUIRES) {
-                        $required = $rule->getReasonData()->getTarget();
-                    }
 
-                    if ($required && (false !== ($pos = strpos($required, '/')))) {
-                        $requiredVendor = substr($required, 0, $pos);
                     $aIsSameVendor = substr($a->getName(), 0, $pos) === $requiredVendor;
                     $bIsSameVendor = substr($b->getName(), 0, $pos) === $requiredVendor;
 
@@ -155,7 +149,6 @@ class DefaultPolicy implements PolicyInterface
                     }
                 }
             }
-            }
 
             // priority equal, sort by package id to make reproducible
             if ($a->getId() === $b->getId()) {

src/Composer/DependencyResolver/Rule.php

@@ -82,14 +82,15 @@ class Rule
         return $this->job;
     }
 
-    public function getReason()
+    public function getRequiredPackage()
     {
-        return $this->reason;
+        if ($this->reason === self::RULE_JOB_INSTALL) {
+            return $this->reasonData;
         }
 
-    public function getReasonData()
+        if ($this->reason === self::RULE_PACKAGE_REQUIRES) {
-    {
+            return $this->reasonData->getTarget();
-        return $this->reasonData;
+        }
     }
 
     /**

src/Composer/DependencyResolver/Solver.php

@@ -321,7 +321,7 @@ class Solver
     private function selectAndInstall($level, array $decisionQueue, $disableRules, Rule $rule)
     {
         // choose best package to install from decisionQueue
-        $literals = $this->policy->selectPreferedPackages($this->pool, $this->installedMap, $decisionQueue, $rule);
+        $literals = $this->policy->selectPreferedPackages($this->pool, $this->installedMap, $decisionQueue, $rule->getRequiredPackage());
 
         $selectedLiteral = array_shift($literals);
 

tests/Composer/Test/DependencyResolver/DefaultPolicyTest.php

@@ -195,6 +195,7 @@ class DefaultPolicyTest extends TestCase
 
     public function testPreferReplacingPackageFromSameVendor()
     {
+        // test with default order
         $this->repo->addPackage($packageB = $this->getPackage('vendor-b/replacer', '1.0'));
         $this->repo->addPackage($packageA = $this->getPackage('vendor-a/replacer', '1.0'));
 
@@ -206,16 +207,21 @@ class DefaultPolicyTest extends TestCase
         $literals = array($packageA->getId(), $packageB->getId());
         $expected = $literals;
 
-        // test with install rule
+        $selected = $this->policy->selectPreferedPackages($this->pool, array(), $literals, 'vendor-a/package');
-        $rule = new Rule($this->pool, $literals, Rule::RULE_JOB_INSTALL, 'vendor-a/package');
-        $selected = $this->policy->selectPreferedPackages($this->pool, array(), $literals, $rule);
-
         $this->assertEquals($expected, $selected);
 
-        // test with requires rule
+        // test with reversed order in repo
-        $rule = new Rule($this->pool, $literals, Rule::RULE_PACKAGE_REQUIRES, new Link('foo', 'vendor-a/package'));
+        $repo = new ArrayRepository;
-        $selected = $this->policy->selectPreferedPackages($this->pool, array(), $literals, $rule);
+        $repo->addPackage($packageA = clone $packageA);
+        $repo->addPackage($packageB = clone $packageB);
+
+        $pool = new Pool('dev');
+        $pool->addRepository($this->repo);
+
+        $literals = array($packageA->getId(), $packageB->getId());
+        $expected = $literals;
 
+        $selected = $this->policy->selectPreferedPackages($this->pool, array(), $literals, 'vendor-a/package');
         $this->assertEquals($expected, $selected);
     }