Update semver, fix poolbuilder usage and optimize creation of filtering nameConstraints

composer.lock

@@ -60,6 +60,21 @@
                 "ssl",
                 "tls"
             ],
+            "support": {
+                "irc": "irc://irc.freenode.org/composer",
+                "issues": "https://github.com/composer/ca-bundle/issues",
+                "source": "https://github.com/composer/ca-bundle/tree/1.2.7"
+            },
+            "funding": [
+                {
+                    "url": "https://packagist.com",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/composer/composer",
+                    "type": "tidelift"
+                }
+            ],
             "time": "2020-04-08T08:27:21+00:00"
         },
         {
@@ -68,19 +83,20 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/semver.git",
-                "reference": "2fbee6b82f09aeaa3905444eb6652c554411fe55"
+                "reference": "03c921a6ef6ac36ca3aa0113a726e1b473f0f528"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/semver/zipball/2fbee6b82f09aeaa3905444eb6652c554411fe55",
-                "reference": "2fbee6b82f09aeaa3905444eb6652c554411fe55",
+                "url": "https://api.github.com/repos/composer/semver/zipball/03c921a6ef6ac36ca3aa0113a726e1b473f0f528",
+                "reference": "03c921a6ef6ac36ca3aa0113a726e1b473f0f528",
                 "shasum": ""
             },
             "require": {
                 "php": "^5.3.2 || ^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.5 || ^5.0.5"
+                "phpstan/phpstan": "^0.12.19",
+                "phpunit/phpunit": "^4.5 || ^5.0.5 || ^7"
             },
             "type": "library",
             "extra": {
@@ -121,7 +137,12 @@
                 "validation",
                 "versioning"
             ],
-            "time": "2020-04-16T13:02:51+00:00"
+            "support": {
+                "irc": "irc://irc.freenode.org/composer",
+                "issues": "https://github.com/composer/semver/issues",
+                "source": "https://github.com/composer/semver/tree/master"
+            },
+            "time": "2020-04-21T12:22:29+00:00"
         },
         {
             "name": "composer/spdx-licenses",
@@ -181,6 +202,11 @@
                 "spdx",
                 "validator"
             ],
+            "support": {
+                "irc": "irc://irc.freenode.org/composer",
+                "issues": "https://github.com/composer/spdx-licenses/issues",
+                "source": "https://github.com/composer/spdx-licenses/tree/1.5.3"
+            },
             "time": "2020-02-14T07:44:31+00:00"
         },
         {
@@ -225,6 +251,17 @@
                 "Xdebug",
                 "performance"
             ],
+            "support": {
+                "irc": "irc://irc.freenode.org/composer",
+                "issues": "https://github.com/composer/xdebug-handler/issues",
+                "source": "https://github.com/composer/xdebug-handler/tree/master"
+            },
+            "funding": [
+                {
+                    "url": "https://packagist.com",
+                    "type": "custom"
+                }
+            ],
             "time": "2020-03-01T12:26:26+00:00"
         },
         {
@@ -291,6 +328,10 @@
                 "json",
                 "schema"
             ],
+            "support": {
+                "issues": "https://github.com/justinrainbow/json-schema/issues",
+                "source": "https://github.com/justinrainbow/json-schema/tree/5.2.9"
+            },
             "time": "2019-09-25T14:49:45+00:00"
         },
         {
@@ -338,6 +379,9 @@
                 "psr",
                 "psr-3"
             ],
+            "support": {
+                "source": "https://github.com/php-fig/log/tree/1.1.3"
+            },
             "time": "2020-03-23T09:12:05+00:00"
         },
         {
@@ -375,12 +419,6 @@
             "license": [
                 "MIT"
             ],
-            "authors": [
-                {
-                    "name": "Jan Sorgalla",
-                    "email": "jsorgalla@gmail.com"
-                }
-            ],
             "description": "A lightweight implementation of CommonJS Promises/A for PHP",
             "time": "2016-03-07T13:46:50+00:00"
         },
@@ -431,6 +469,10 @@
                 "parser",
                 "validator"
             ],
+            "support": {
+                "issues": "https://github.com/Seldaek/jsonlint/issues",
+                "source": "https://github.com/Seldaek/jsonlint/tree/1.7.2"
+            },
             "time": "2019-10-24T14:27:39+00:00"
         },
         {
@@ -475,6 +517,10 @@
             "keywords": [
                 "phar"
             ],
+            "support": {
+                "issues": "https://github.com/Seldaek/phar-utils/issues",
+                "source": "https://github.com/Seldaek/phar-utils/tree/1.1.0"
+            },
             "time": "2020-02-14T15:25:33+00:00"
         },
         {
@@ -536,6 +582,9 @@
             ],
             "description": "Symfony Console Component",
             "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/console/tree/v2.8.52"
+            },
             "time": "2018-11-20T15:55:20+00:00"
         },
         {
@@ -593,6 +642,9 @@
             ],
             "description": "Symfony Debug Component",
             "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/debug/tree/v2.8.50"
+            },
             "time": "2018-11-11T11:18:13+00:00"
         },
         {
@@ -643,6 +695,9 @@
             ],
             "description": "Symfony Filesystem Component",
             "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/filesystem/tree/v2.8.52"
+            },
             "time": "2018-11-11T11:18:13+00:00"
         },
         {
@@ -692,6 +747,9 @@
             ],
             "description": "Symfony Finder Component",
             "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/finder/tree/v2.8.50"
+            },
             "time": "2018-11-11T11:18:13+00:00"
         },
         {
@@ -750,6 +808,23 @@
                 "polyfill",
                 "portable"
             ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.15.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
             "time": "2020-02-27T09:26:54+00:00"
         },
         {
@@ -809,6 +884,23 @@
                 "portable",
                 "shim"
             ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-mbstring/tree/v1.15.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
             "time": "2020-03-09T19:04:49+00:00"
         },
         {
@@ -858,6 +950,9 @@
             ],
             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/process/tree/v2.8.50"
+            },
             "time": "2018-11-11T11:18:13+00:00"
         }
     ],
@@ -914,6 +1009,10 @@
                 "constructor",
                 "instantiate"
             ],
+            "support": {
+                "issues": "https://github.com/doctrine/instantiator/issues",
+                "source": "https://github.com/doctrine/instantiator/tree/master"
+            },
             "time": "2015-06-14T21:17:01+00:00"
         },
         {
@@ -963,6 +1062,10 @@
                     "email": "mike.vanriel@naenius.com"
                 }
             ],
+            "support": {
+                "issues": "https://github.com/phpDocumentor/ReflectionDocBlock/issues",
+                "source": "https://github.com/phpDocumentor/ReflectionDocBlock/tree/release/2.x"
+            },
             "time": "2016-01-25T08:17:30+00:00"
         },
         {
@@ -1026,6 +1129,10 @@
                 "spy",
                 "stub"
             ],
+            "support": {
+                "issues": "https://github.com/phpspec/prophecy/issues",
+                "source": "https://github.com/phpspec/prophecy/tree/v1.10.3"
+            },
             "time": "2020-03-05T15:02:03+00:00"
         },
         {
@@ -1090,6 +1197,10 @@
                 "compare",
                 "equality"
             ],
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/comparator/issues",
+                "source": "https://github.com/sebastianbergmann/comparator/tree/1.2"
+            },
             "time": "2017-01-29T09:50:25+00:00"
         },
         {
@@ -1142,6 +1253,10 @@
             "keywords": [
                 "diff"
             ],
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/diff/issues",
+                "source": "https://github.com/sebastianbergmann/diff/tree/1.4"
+            },
             "time": "2017-05-22T07:24:03+00:00"
         },
         {
@@ -1209,6 +1324,10 @@
                 "export",
                 "exporter"
             ],
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/exporter/issues",
+                "source": "https://github.com/sebastianbergmann/exporter/tree/master"
+            },
             "time": "2016-11-19T08:54:04+00:00"
         },
         {
@@ -1262,6 +1381,10 @@
             ],
             "description": "Provides functionality to recursively process PHP variables",
             "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/recursion-context/issues",
+                "source": "https://github.com/sebastianbergmann/recursion-context/tree/master"
+            },
             "time": "2016-11-19T07:33:16+00:00"
         },
         {
@@ -1327,6 +1450,9 @@
             ],
             "description": "Symfony PHPUnit Bridge",
             "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/phpunit-bridge/tree/v3.4.38"
+            },
             "time": "2020-02-21T08:01:47+00:00"
         }
     ],
@@ -1343,5 +1469,6 @@
     "platform-dev": [],
     "platform-overrides": {
         "php": "5.3.9"
-    }
+    },
+    "plugin-api-version": "2.0.0"
 }

src/Composer/DependencyResolver/PoolBuilder.php

@@ -122,7 +122,7 @@ class PoolBuilder
             }
 
             $loadNames[$packageName] = $constraint;
-            $this->nameConstraints[$packageName] = $constraint ? new MultiConstraint(array($constraint), false) : null;
+            $this->nameConstraints[$packageName] = $constraint && !($constraint instanceof EmptyConstraint) ? array($constraint) : null;
         }
 
         // clean up loadNames for anything we manually marked loaded above
@@ -159,11 +159,17 @@ class PoolBuilder
         }
 
         // filter packages according to all the require statements collected for each package
+        $nameConstraints = array();
+        foreach ($this->nameConstraints as $name => $constraints) {
+            if (is_array($constraints)) {
+                $nameConstraints[$name] = MultiConstraint::create(array_values(array_unique($constraints)), false);
+            }
+        }
         foreach ($this->packages as $i => $package) {
             // we check all alias related packages at once, so no need to check individual aliases
             // isset also checks non-null value
-            if (!$package instanceof AliasPackage && isset($this->nameConstraints[$package->getName()])) {
-                $constraint = $this->nameConstraints[$package->getName()];
+            if (!$package instanceof AliasPackage && isset($nameConstraints[$package->getName()])) {
+                $constraint = $nameConstraints[$package->getName()];
 
                 $aliasedPackages = array($i => $package);
                 if (isset($this->aliasMap[spl_object_hash($package)])) {
@@ -270,10 +276,9 @@ class PoolBuilder
             $linkConstraint = $link->getConstraint();
             if ($linkConstraint && !($linkConstraint instanceof EmptyConstraint)) {
                 if (!array_key_exists($require, $this->nameConstraints)) {
-                    $this->nameConstraints[$require] = new MultiConstraint(array($linkConstraint), false);
-                } elseif ($this->nameConstraints[$require]) {
-                    // TODO addConstraint function?
-                    $this->nameConstraints[$require] = new MultiConstraint(array_merge(array($linkConstraint), $this->nameConstraints[$require]->getConstraints()), false);
+                    $this->nameConstraints[$require] = array($linkConstraint);
+                } elseif (is_array($this->nameConstraints[$require])) {
+                    $this->nameConstraints[$require][] = $linkConstraint;
                 }
                 // else it is null and should stay null
             } else {