Current File : //proc/thread-self/root/usr/share/php/Composer/DependencyResolver/PoolBuilder.php
<?php declare(strict_types=1);

/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Composer\DependencyResolver;

use Composer\EventDispatcher\EventDispatcher;
use Composer\IO\IOInterface;
use Composer\Package\AliasPackage;
use Composer\Package\BasePackage;
use Composer\Package\CompleteAliasPackage;
use Composer\Package\CompletePackage;
use Composer\Package\PackageInterface;
use Composer\Package\Version\StabilityFilter;
use Composer\Pcre\Preg;
use Composer\Plugin\PluginEvents;
use Composer\Plugin\PrePoolCreateEvent;
use Composer\Repository\PlatformRepository;
use Composer\Repository\RepositoryInterface;
use Composer\Repository\RootPackageRepository;
use Composer\Semver\CompilingMatcher;
use Composer\Semver\Constraint\Constraint;
use Composer\Semver\Constraint\ConstraintInterface;
use Composer\Semver\Constraint\MatchAllConstraint;
use Composer\Semver\Constraint\MultiConstraint;
use Composer\Semver\Intervals;

/**
 * @author Nils Adermann <naderman@naderman.de>
 */
class PoolBuilder
{
    /**
     * @var int[]
     * @phpstan-var array<string, BasePackage::STABILITY_*>
     */
    private $acceptableStabilities;
    /**
     * @var int[]
     * @phpstan-var array<string, BasePackage::STABILITY_*>
     */
    private $stabilityFlags;
    /**
     * @var array[]
     * @phpstan-var array<string, array<string, array{alias: string, alias_normalized: string}>>
     */
    private $rootAliases;
    /**
     * @var string[]
     * @phpstan-var array<string, string>
     */
    private $rootReferences;
    /**
     * @var array<string, ConstraintInterface>
     */
    private $temporaryConstraints;
    /**
     * @var ?EventDispatcher
     */
    private $eventDispatcher;
    /**
     * @var PoolOptimizer|null
     */
    private $poolOptimizer;
    /**
     * @var IOInterface
     */
    private $io;
    /**
     * @var array[]
     * @phpstan-var array<string, AliasPackage[]>
     */
    private $aliasMap = [];
    /**
     * @var ConstraintInterface[]
     * @phpstan-var array<string, ConstraintInterface>
     */
    private $packagesToLoad = [];
    /**
     * @var ConstraintInterface[]
     * @phpstan-var array<string, ConstraintInterface>
     */
    private $loadedPackages = [];
    /**
     * @var array[]
     * @phpstan-var array<int, array<string, array<string, PackageInterface>>>
     */
    private $loadedPerRepo = [];
    /**
     * @var BasePackage[]
     */
    private $packages = [];
    /**
     * @var BasePackage[]
     */
    private $unacceptableFixedOrLockedPackages = [];
    /** @var array<string> */
    private $updateAllowList = [];
    /** @var array<string, array<PackageInterface>> */
    private $skippedLoad = [];

    /**
     * If provided, only these package names are loaded
     *
     * This is a special-use functionality of the Request class to optimize the pool creation process
     * when only a minimal subset of packages is needed and we do not need their dependencies.
     *
     * @var array<string, int>|null
     */
    private $restrictedPackagesList = null;

    /**
     * Keeps a list of dependencies which are locked but were auto-unlocked as they are path repositories
     *
     * This half-unlocked state means the package itself will update but the UPDATE_LISTED_WITH_TRANSITIVE_DEPS*
     * flags will not apply until the package really gets unlocked in some other way than being a path repo
     *
     * @var array<string, true>
     */
    private $pathRepoUnlocked = [];

    /**
     * Keeps a list of dependencies which are root requirements, and as such
     * have already their maximum required range loaded and can not be
     * extended by markPackageNameForLoading
     *
     * Packages get cleared from this list if they get unlocked as in that case
     * we need to actually load them
     *
     * @var array<string, true>
     */
    private $maxExtendedReqs = [];
    /**
     * @var array
     * @phpstan-var array<string, bool>
     */
    private $updateAllowWarned = [];

    /** @var int */
    private $indexCounter = 0;

    /**
     * @param int[] $acceptableStabilities array of stability => BasePackage::STABILITY_* value
     * @phpstan-param array<string, BasePackage::STABILITY_*> $acceptableStabilities
     * @param int[] $stabilityFlags an array of package name => BasePackage::STABILITY_* value
     * @phpstan-param array<string, BasePackage::STABILITY_*> $stabilityFlags
     * @param array[] $rootAliases
     * @phpstan-param array<string, array<string, array{alias: string, alias_normalized: string}>> $rootAliases
     * @param string[] $rootReferences an array of package name => source reference
     * @phpstan-param array<string, string> $rootReferences
     * @param array<string, ConstraintInterface> $temporaryConstraints Runtime temporary constraints that will be used to filter packages
     */
    public function __construct(array $acceptableStabilities, array $stabilityFlags, array $rootAliases, array $rootReferences, IOInterface $io, ?EventDispatcher $eventDispatcher = null, ?PoolOptimizer $poolOptimizer = null, array $temporaryConstraints = [])
    {
        $this->acceptableStabilities = $acceptableStabilities;
        $this->stabilityFlags = $stabilityFlags;
        $this->rootAliases = $rootAliases;
        $this->rootReferences = $rootReferences;
        $this->eventDispatcher = $eventDispatcher;
        $this->poolOptimizer = $poolOptimizer;
        $this->io = $io;
        $this->temporaryConstraints = $temporaryConstraints;
    }

    /**
     * @param RepositoryInterface[] $repositories
     */
    public function buildPool(array $repositories, Request $request): Pool
    {
        $this->restrictedPackagesList = $request->getRestrictedPackages() !== null ? array_flip($request->getRestrictedPackages()) : null;

        if ($request->getUpdateAllowList()) {
            $this->updateAllowList = $request->getUpdateAllowList();
            $this->warnAboutNonMatchingUpdateAllowList($request);

            foreach ($request->getLockedRepository()->getPackages() as $lockedPackage) {
                if (!$this->isUpdateAllowed($lockedPackage)) {
                    // remember which packages we skipped loading remote content for in this partial update
                    $this->skippedLoad[$lockedPackage->getName()][] = $lockedPackage;
                    foreach ($lockedPackage->getReplaces() as $link) {
                        $this->skippedLoad[$link->getTarget()][] = $lockedPackage;
                    }

                    // Path repo packages are never loaded from lock, to force them to always remain in sync
                    // unless symlinking is disabled in which case we probably should rather treat them like
                    // regular packages. We mark them specially so they can be reloaded fully including update propagation
                    // if they do get unlocked, but by default they are unlocked without update propagation.
                    if ($lockedPackage->getDistType() === 'path') {
                        $transportOptions = $lockedPackage->getTransportOptions();
                        if (!isset($transportOptions['symlink']) || $transportOptions['symlink'] !== false) {
                            $this->pathRepoUnlocked[$lockedPackage->getName()] = true;
                            continue;
                        }
                    }

                    $request->lockPackage($lockedPackage);
                }
            }
        }

        foreach ($request->getFixedOrLockedPackages() as $package) {
            // using MatchAllConstraint here because fixed packages do not need to retrigger
            // loading any packages
            $this->loadedPackages[$package->getName()] = new MatchAllConstraint();

            // replace means conflict, so if a fixed package replaces a name, no need to load that one, packages would conflict anyways
            foreach ($package->getReplaces() as $link) {
                $this->loadedPackages[$link->getTarget()] = new MatchAllConstraint();
            }

            // TODO in how far can we do the above for conflicts? It's more tricky cause conflicts can be limited to
            // specific versions while replace is a conflict with all versions of the name

            if (
                $package->getRepository() instanceof RootPackageRepository
                || $package->getRepository() instanceof PlatformRepository
                || StabilityFilter::isPackageAcceptable($this->acceptableStabilities, $this->stabilityFlags, $package->getNames(), $package->getStability())
            ) {
                $this->loadPackage($request, $repositories, $package, false);
            } else {
                $this->unacceptableFixedOrLockedPackages[] = $package;
            }
        }

        foreach ($request->getRequires() as $packageName => $constraint) {
            // fixed and locked packages have already been added, so if a root require needs one of them, no need to do anything
            if (isset($this->loadedPackages[$packageName])) {
                continue;
            }

            $this->packagesToLoad[$packageName] = $constraint;
            $this->maxExtendedReqs[$packageName] = true;
        }

        // clean up packagesToLoad for anything we manually marked loaded above
        foreach ($this->packagesToLoad as $name => $constraint) {
            if (isset($this->loadedPackages[$name])) {
                unset($this->packagesToLoad[$name]);
            }
        }

        while (!empty($this->packagesToLoad)) {
            $this->loadPackagesMarkedForLoading($request, $repositories);
        }

        if (\count($this->temporaryConstraints) > 0) {
            foreach ($this->packages as $i => $package) {
                // we check all alias related packages at once, so no need to check individual aliases
                if (!isset($this->temporaryConstraints[$package->getName()]) || $package instanceof AliasPackage) {
                    continue;
                }

                $constraint = $this->temporaryConstraints[$package->getName()];
                $packageAndAliases = [$i => $package];
                if (isset($this->aliasMap[spl_object_hash($package)])) {
                    $packageAndAliases += $this->aliasMap[spl_object_hash($package)];
                }

                $found = false;
                foreach ($packageAndAliases as $packageOrAlias) {
                    if (CompilingMatcher::match($constraint, Constraint::OP_EQ, $packageOrAlias->getVersion())) {
                        $found = true;
                    }
                }

                if (!$found) {
                    foreach ($packageAndAliases as $index => $packageOrAlias) {
                        unset($this->packages[$index]);
                    }
                }
            }
        }

        if ($this->eventDispatcher) {
            $prePoolCreateEvent = new PrePoolCreateEvent(
                PluginEvents::PRE_POOL_CREATE,
                $repositories,
                $request,
                $this->acceptableStabilities,
                $this->stabilityFlags,
                $this->rootAliases,
                $this->rootReferences,
                $this->packages,
                $this->unacceptableFixedOrLockedPackages
            );
            $this->eventDispatcher->dispatch($prePoolCreateEvent->getName(), $prePoolCreateEvent);
            $this->packages = $prePoolCreateEvent->getPackages();
            $this->unacceptableFixedOrLockedPackages = $prePoolCreateEvent->getUnacceptableFixedPackages();
        }

        $pool = new Pool($this->packages, $this->unacceptableFixedOrLockedPackages);

        $this->aliasMap = [];
        $this->packagesToLoad = [];
        $this->loadedPackages = [];
        $this->loadedPerRepo = [];
        $this->packages = [];
        $this->unacceptableFixedOrLockedPackages = [];
        $this->maxExtendedReqs = [];
        $this->skippedLoad = [];
        $this->indexCounter = 0;

        $this->io->debug('Built pool.');

        $pool = $this->runOptimizer($request, $pool);

        Intervals::clear();

        return $pool;
    }

    private function markPackageNameForLoading(Request $request, string $name, ConstraintInterface $constraint): void
    {
        // Skip platform requires at this stage
        if (PlatformRepository::isPlatformPackage($name)) {
            return;
        }

        // Root require (which was not unlocked) already loaded the maximum range so no
        // need to check anything here
        if (isset($this->maxExtendedReqs[$name])) {
            return;
        }

        // Root requires can not be overruled by dependencies so there is no point in
        // extending the loaded constraint for those.
        // This is triggered when loading a root require which was locked but got unlocked, then
        // we make sure that we load at most the intervals covered by the root constraint.
        $rootRequires = $request->getRequires();
        if (isset($rootRequires[$name]) && !Intervals::isSubsetOf($constraint, $rootRequires[$name])) {
            $constraint = $rootRequires[$name];
        }

        // Not yet loaded or already marked for a reload, set the constraint to be loaded
        if (!isset($this->loadedPackages[$name])) {
            // Maybe it was already marked before but not loaded yet. In that case
            // we have to extend the constraint (we don't check if they are identical because
            // MultiConstraint::create() will optimize anyway)
            if (isset($this->packagesToLoad[$name])) {
                // Already marked for loading and this does not expand the constraint to be loaded, nothing to do
                if (Intervals::isSubsetOf($constraint, $this->packagesToLoad[$name])) {
                    return;
                }

                // extend the constraint to be loaded
                $constraint = Intervals::compactConstraint(MultiConstraint::create([$this->packagesToLoad[$name], $constraint], false));
            }

            $this->packagesToLoad[$name] = $constraint;

            return;
        }

        // No need to load this package with this constraint because it is
        // a subset of the constraint with which we have already loaded packages
        if (Intervals::isSubsetOf($constraint, $this->loadedPackages[$name])) {
            return;
        }

        // We have already loaded that package but not in the constraint that's
        // required. We extend the constraint and mark that package as not being loaded
        // yet so we get the required package versions
        $this->packagesToLoad[$name] = Intervals::compactConstraint(MultiConstraint::create([$this->loadedPackages[$name], $constraint], false));
        unset($this->loadedPackages[$name]);
    }

    /**
     * @param RepositoryInterface[] $repositories
     */
    private function loadPackagesMarkedForLoading(Request $request, array $repositories): void
    {
        foreach ($this->packagesToLoad as $name => $constraint) {
            if ($this->restrictedPackagesList !== null && !isset($this->restrictedPackagesList[$name])) {
                unset($this->packagesToLoad[$name]);
                continue;
            }
            $this->loadedPackages[$name] = $constraint;
        }

        $packageBatch = $this->packagesToLoad;
        $this->packagesToLoad = [];

        foreach ($repositories as $repoIndex => $repository) {
            if (empty($packageBatch)) {
                break;
            }

            // these repos have their packages fixed or locked if they need to be loaded so we
            // never need to load anything else from them
            if ($repository instanceof PlatformRepository || $repository === $request->getLockedRepository()) {
                continue;
            }
            $result = $repository->loadPackages($packageBatch, $this->acceptableStabilities, $this->stabilityFlags, $this->loadedPerRepo[$repoIndex] ?? []);

            foreach ($result['namesFound'] as $name) {
                // avoid loading the same package again from other repositories once it has been found
                unset($packageBatch[$name]);
            }
            foreach ($result['packages'] as $package) {
                $this->loadedPerRepo[$repoIndex][$package->getName()][$package->getVersion()] = $package;
                $this->loadPackage($request, $repositories, $package, !isset($this->pathRepoUnlocked[$package->getName()]));
            }
        }
    }

    /**
     * @param RepositoryInterface[] $repositories
     */
    private function loadPackage(Request $request, array $repositories, BasePackage $package, bool $propagateUpdate): void
    {
        $index = $this->indexCounter++;
        $this->packages[$index] = $package;

        if ($package instanceof AliasPackage) {
            $this->aliasMap[spl_object_hash($package->getAliasOf())][$index] = $package;
        }

        $name = $package->getName();

        // we're simply setting the root references on all versions for a name here and rely on the solver to pick the
        // right version. It'd be more work to figure out which versions and which aliases of those versions this may
        // apply to
        if (isset($this->rootReferences[$name])) {
            // do not modify the references on already locked or fixed packages
            if (!$request->isLockedPackage($package) && !$request->isFixedPackage($package)) {
                $package->setSourceDistReferences($this->rootReferences[$name]);
            }
        }

        // if propagateUpdate is false we are loading a fixed or locked package, root aliases do not apply as they are
        // manually loaded as separate packages in this case
        //
        // packages in pathRepoUnlocked however need to also load root aliases, they have propagateUpdate set to
        // false because their deps should not be unlocked, but that is irrelevant for root aliases
        if (($propagateUpdate || isset($this->pathRepoUnlocked[$package->getName()])) && isset($this->rootAliases[$name][$package->getVersion()])) {
            $alias = $this->rootAliases[$name][$package->getVersion()];
            if ($package instanceof AliasPackage) {
                $basePackage = $package->getAliasOf();
            } else {
                $basePackage = $package;
            }
            if ($basePackage instanceof CompletePackage) {
                $aliasPackage = new CompleteAliasPackage($basePackage, $alias['alias_normalized'], $alias['alias']);
            } else {
                $aliasPackage = new AliasPackage($basePackage, $alias['alias_normalized'], $alias['alias']);
            }
            $aliasPackage->setRootPackageAlias(true);

            $newIndex = $this->indexCounter++;
            $this->packages[$newIndex] = $aliasPackage;
            $this->aliasMap[spl_object_hash($aliasPackage->getAliasOf())][$newIndex] = $aliasPackage;
        }

        foreach ($package->getRequires() as $link) {
            $require = $link->getTarget();
            $linkConstraint = $link->getConstraint();

            // if the required package is loaded as a locked package only and hasn't had its deps analyzed
            if (isset($this->skippedLoad[$require])) {
                // if we're doing a full update or this is a partial update with transitive deps and we're currently
                // looking at a package which needs to be updated we need to unlock the package we now know is a
                // dependency of another package which we are trying to update, and then attempt to load it again
                if ($propagateUpdate && $request->getUpdateAllowTransitiveDependencies()) {
                    $skippedRootRequires = $this->getSkippedRootRequires($request, $require);

                    if ($request->getUpdateAllowTransitiveRootDependencies() || !$skippedRootRequires) {
                        $this->unlockPackage($request, $repositories, $require);
                        $this->markPackageNameForLoading($request, $require, $linkConstraint);
                    } else {
                        foreach ($skippedRootRequires as $rootRequire) {
                            if (!isset($this->updateAllowWarned[$rootRequire])) {
                                $this->updateAllowWarned[$rootRequire] = true;
                                $this->io->writeError('<warning>Dependency '.$rootRequire.' is also a root requirement. Package has not been listed as an update argument, so keeping locked at old version. Use --with-all-dependencies (-W) to include root dependencies.</warning>');
                            }
                        }
                    }
                } elseif (isset($this->pathRepoUnlocked[$require]) && !isset($this->loadedPackages[$require])) {
                    // if doing a partial update and a package depends on a path-repo-unlocked package which is not referenced by the root, we need to ensure it gets loaded as it was not loaded by the request's root requirements
                    // and would not be loaded above if update propagation is not allowed (which happens if the requirer is itself a path-repo-unlocked package) or if transitive deps are not allowed to be unlocked
                    $this->markPackageNameForLoading($request, $require, $linkConstraint);
                }
            } else {
                $this->markPackageNameForLoading($request, $require, $linkConstraint);
            }
        }

        // if we're doing a partial update with deps we also need to unlock packages which are being replaced in case
        // they are currently locked and thus prevent this updateable package from being installable/updateable
        if ($propagateUpdate && $request->getUpdateAllowTransitiveDependencies()) {
            foreach ($package->getReplaces() as $link) {
                $replace = $link->getTarget();
                if (isset($this->loadedPackages[$replace], $this->skippedLoad[$replace])) {
                    $skippedRootRequires = $this->getSkippedRootRequires($request, $replace);

                    if ($request->getUpdateAllowTransitiveRootDependencies() || !$skippedRootRequires) {
                        $this->unlockPackage($request, $repositories, $replace);
                        // the replaced package only needs to be loaded if something else requires it
                        $this->markPackageNameForLoadingIfRequired($request, $replace);
                    } else {
                        foreach ($skippedRootRequires as $rootRequire) {
                            if (!isset($this->updateAllowWarned[$rootRequire])) {
                                $this->updateAllowWarned[$rootRequire] = true;
                                $this->io->writeError('<warning>Dependency '.$rootRequire.' is also a root requirement. Package has not been listed as an update argument, so keeping locked at old version. Use --with-all-dependencies (-W) to include root dependencies.</warning>');
                            }
                        }
                    }
                }
            }
        }
    }

    /**
     * Checks if a particular name is required directly in the request
     *
     * @param string $name packageName
     */
    private function isRootRequire(Request $request, string $name): bool
    {
        $rootRequires = $request->getRequires();

        return isset($rootRequires[$name]);
    }

    /**
     * @return string[]
     */
    private function getSkippedRootRequires(Request $request, string $name): array
    {
        if (!isset($this->skippedLoad[$name])) {
            return [];
        }

        $rootRequires = $request->getRequires();
        $matches = [];

        if (isset($rootRequires[$name])) {
            return array_map(static function (PackageInterface $package) use ($name): string {
                if ($name !== $package->getName()) {
                    return $package->getName() .' (via replace of '.$name.')';
                }

                return $package->getName();
            }, $this->skippedLoad[$name]);
        }

        foreach ($this->skippedLoad[$name] as $packageOrReplacer) {
            if (isset($rootRequires[$packageOrReplacer->getName()])) {
                $matches[] = $packageOrReplacer->getName();
            }
            foreach ($packageOrReplacer->getReplaces() as $link) {
                if (isset($rootRequires[$link->getTarget()])) {
                    if ($name !== $packageOrReplacer->getName()) {
                        $matches[] = $packageOrReplacer->getName() .' (via replace of '.$name.')';
                    } else {
                        $matches[] = $packageOrReplacer->getName();
                    }
                    break;
                }
            }
        }

        return $matches;
    }

    /**
     * Checks whether the update allow list allows this package in the lock file to be updated
     */
    private function isUpdateAllowed(BasePackage $package): bool
    {
        foreach ($this->updateAllowList as $pattern) {
            $patternRegexp = BasePackage::packageNameToRegexp($pattern);
            if (Preg::isMatch($patternRegexp, $package->getName())) {
                return true;
            }
        }

        return false;
    }

    private function warnAboutNonMatchingUpdateAllowList(Request $request): void
    {
        foreach ($this->updateAllowList as $pattern) {
            $patternRegexp = BasePackage::packageNameToRegexp($pattern);
            // update pattern matches a locked package? => all good
            foreach ($request->getLockedRepository()->getPackages() as $package) {
                if (Preg::isMatch($patternRegexp, $package->getName())) {
                    continue 2;
                }
            }
            // update pattern matches a root require? => all good, probably a new package
            foreach ($request->getRequires() as $packageName => $constraint) {
                if (Preg::isMatch($patternRegexp, $packageName)) {
                    continue 2;
                }
            }
            if (strpos($pattern, '*') !== false) {
                $this->io->writeError('<warning>Pattern "' . $pattern . '" listed for update does not match any locked packages.</warning>');
            } else {
                $this->io->writeError('<warning>Package "' . $pattern . '" listed for update is not locked.</warning>');
            }
        }
    }

    /**
     * Reverts the decision to use a locked package if a partial update with transitive dependencies
     * found that this package actually needs to be updated
     *
     * @param RepositoryInterface[] $repositories
     */
    private function unlockPackage(Request $request, array $repositories, string $name): void
    {
        foreach ($this->skippedLoad[$name] as $packageOrReplacer) {
            // if we unfixed a replaced package name, we also need to unfix the replacer itself
            // as long as it was not unfixed yet
            if ($packageOrReplacer->getName() !== $name && isset($this->skippedLoad[$packageOrReplacer->getName()])) {
                $replacerName = $packageOrReplacer->getName();
                if ($request->getUpdateAllowTransitiveRootDependencies() || (!$this->isRootRequire($request, $name) && !$this->isRootRequire($request, $replacerName))) {
                    $this->unlockPackage($request, $repositories, $replacerName);

                    if ($this->isRootRequire($request, $replacerName)) {
                        $this->markPackageNameForLoading($request, $replacerName, new MatchAllConstraint);
                    } else {
                        foreach ($this->packages as $loadedPackage) {
                            $requires = $loadedPackage->getRequires();
                            if (isset($requires[$replacerName])) {
                                $this->markPackageNameForLoading($request, $replacerName, $requires[$replacerName]->getConstraint());
                            }
                        }
                    }
                }
            }
        }

        if (isset($this->pathRepoUnlocked[$name])) {
            foreach ($this->packages as $index => $package) {
                if ($package->getName() === $name) {
                    $this->removeLoadedPackage($request, $repositories, $package, $index);
                }
            }
        }

        unset($this->skippedLoad[$name], $this->loadedPackages[$name], $this->maxExtendedReqs[$name], $this->pathRepoUnlocked[$name]);

        // remove locked package by this name which was already initialized
        foreach ($request->getLockedPackages() as $lockedPackage) {
            if (!($lockedPackage instanceof AliasPackage) && $lockedPackage->getName() === $name) {
                if (false !== $index = array_search($lockedPackage, $this->packages, true)) {
                    $request->unlockPackage($lockedPackage);
                    $this->removeLoadedPackage($request, $repositories, $lockedPackage, $index);

                    // make sure that any requirements for this package by other locked or fixed packages are now
                    // also loaded, as they were previously ignored because the locked (now unlocked) package already
                    // satisfied their requirements
                    // and if this package is replacing another that is required by a locked or fixed package, ensure
                    // that we load that replaced package in case an update to this package removes the replacement
                    foreach ($request->getFixedOrLockedPackages() as $fixedOrLockedPackage) {
                        if ($fixedOrLockedPackage === $lockedPackage) {
                            continue;
                        }

                        if (isset($this->skippedLoad[$fixedOrLockedPackage->getName()])) {
                            $requires = $fixedOrLockedPackage->getRequires();
                            if (isset($requires[$lockedPackage->getName()])) {
                                $this->markPackageNameForLoading($request, $lockedPackage->getName(), $requires[$lockedPackage->getName()]->getConstraint());
                            }

                            foreach ($lockedPackage->getReplaces() as $replace) {
                                if (isset($requires[$replace->getTarget()], $this->skippedLoad[$replace->getTarget()])) {
                                    $this->unlockPackage($request, $repositories, $replace->getTarget());
                                    // this package is in $requires so no need to call markPackageNameForLoadingIfRequired
                                    $this->markPackageNameForLoading($request, $replace->getTarget(), $replace->getConstraint());
                                }
                            }
                        }
                    }
                }
            }
        }
    }

    private function markPackageNameForLoadingIfRequired(Request $request, string $name): void
    {
        if ($this->isRootRequire($request, $name)) {
            $this->markPackageNameForLoading($request, $name, $request->getRequires()[$name]);
        }

        foreach ($this->packages as $package) {
            foreach ($package->getRequires() as $link) {
                if ($name === $link->getTarget()) {
                    $this->markPackageNameForLoading($request, $link->getTarget(), $link->getConstraint());
                }
            }
        }
    }

    /**
     * @param RepositoryInterface[] $repositories
     */
    private function removeLoadedPackage(Request $request, array $repositories, BasePackage $package, int $index): void
    {
        $repoIndex = array_search($package->getRepository(), $repositories, true);

        unset($this->loadedPerRepo[$repoIndex][$package->getName()][$package->getVersion()]);
        unset($this->packages[$index]);
        if (isset($this->aliasMap[spl_object_hash($package)])) {
            foreach ($this->aliasMap[spl_object_hash($package)] as $aliasIndex => $aliasPackage) {
                unset($this->loadedPerRepo[$repoIndex][$aliasPackage->getName()][$aliasPackage->getVersion()]);
                unset($this->packages[$aliasIndex]);
            }
            unset($this->aliasMap[spl_object_hash($package)]);
        }
    }

    private function runOptimizer(Request $request, Pool $pool): Pool
    {
        if (null === $this->poolOptimizer) {
            return $pool;
        }

        $this->io->debug('Running pool optimizer.');

        $before = microtime(true);
        $total = \count($pool->getPackages());

        $pool = $this->poolOptimizer->optimize($request, $pool);

        $filtered = $total - \count($pool->getPackages());

        if (0 === $filtered) {
            return $pool;
        }

        $this->io->write(sprintf('Pool optimizer completed in %.3f seconds', microtime(true) - $before), true, IOInterface::VERY_VERBOSE);
        $this->io->write(sprintf(
            '<info>Found %s package versions referenced in your dependency graph. %s (%d%%) were optimized away.</info>',
            number_format($total),
            number_format($filtered),
            round(100 / $total * $filtered)
        ), true, IOInterface::VERY_VERBOSE);

        return $pool;
    }
}
¿Qué es la limpieza dental de perros? - Clínica veterinaria


Es la eliminación del sarro y la placa adherida a la superficie de los dientes mediante un equipo de ultrasonidos que garantiza la integridad de las piezas dentales a la vez que elimina en profundidad cualquier resto de suciedad.

A continuación se procede al pulido de los dientes mediante una fresa especial que elimina la placa bacteriana y devuelve a los dientes el aspecto sano que deben tener.

Una vez terminado todo el proceso, se mantiene al perro en observación hasta que se despierta de la anestesia, bajo la atenta supervisión de un veterinario.

¿Cada cuánto tiempo tengo que hacerle una limpieza dental a mi perro?

A partir de cierta edad, los perros pueden necesitar una limpieza dental anual o bianual. Depende de cada caso. En líneas generales, puede decirse que los perros de razas pequeñas suelen acumular más sarro y suelen necesitar una atención mayor en cuanto a higiene dental.


Riesgos de una mala higiene


Los riesgos más evidentes de una mala higiene dental en los perros son los siguientes:

  • Cuando la acumulación de sarro no se trata, se puede producir una inflamación y retracción de las encías que puede descalzar el diente y provocar caídas.
  • Mal aliento (halitosis).
  • Sarro perros
  • Puede ir a más
  • Las bacterias de la placa pueden trasladarse a través del torrente circulatorio a órganos vitales como el corazón ocasionando problemas de endocarditis en las válvulas. Las bacterias pueden incluso acantonarse en huesos (La osteomielitis es la infección ósea, tanto cortical como medular) provocando mucho dolor y una artritis séptica).

¿Cómo se forma el sarro?

El sarro es la calcificación de la placa dental. Los restos de alimentos, junto con las bacterias presentes en la boca, van a formar la placa bacteriana o placa dental. Si la placa no se retira, al mezclarse con la saliva y los minerales presentes en ella, reaccionará formando una costra. La placa se calcifica y se forma el sarro.

El sarro, cuando se forma, es de color blanquecino pero a medida que pasa el tiempo se va poniendo amarillo y luego marrón.

Síntomas de una pobre higiene dental
La señal más obvia de una mala salud dental canina es el mal aliento.

Sin embargo, a veces no es tan fácil de detectar
Y hay perros que no se dejan abrir la boca por su dueño. Por ejemplo…

Recientemente nos trajeron a la clínica a un perro que parpadeaba de un ojo y decía su dueño que le picaba un lado de la cara. Tenía molestias y dificultad para comer, lo que había llevado a sus dueños a comprarle comida blanda (que suele ser un poco más cara y llevar más contenido en grasa) durante medio año. Después de una exploración oftalmológica, nos dimos cuenta de que el ojo tenía una úlcera en la córnea probablemente de rascarse . Además, el canto lateral del ojo estaba inflamado. Tenía lo que en humanos llamamos flemón pero como era un perro de pelo largo, no se le notaba a simple vista. Al abrirle la boca nos llamó la atención el ver una muela llena de sarro. Le realizamos una radiografía y encontramos una fístula que llegaba hasta la parte inferior del ojo.

Le tuvimos que extraer la muela. Tras esto, el ojo se curó completamente con unos colirios y una lentilla protectora de úlcera. Afortunadamente, la úlcera no profundizó y no perforó el ojo. Ahora el perro come perfectamente a pesar de haber perdido una muela.

¿Cómo mantener la higiene dental de tu perro?
Hay varias maneras de prevenir problemas derivados de la salud dental de tu perro.

Limpiezas de dientes en casa
Es recomendable limpiar los dientes de tu perro semanal o diariamente si se puede. Existe una gran variedad de productos que se pueden utilizar:

Pastas de dientes.
Cepillos de dientes o dedales para el dedo índice, que hacen más fácil la limpieza.
Colutorios para echar en agua de bebida o directamente sobre el diente en líquido o en spray.

En la Clínica Tus Veterinarios enseñamos a nuestros clientes a tomar el hábito de limpiar los dientes de sus perros desde que son cachorros. Esto responde a nuestro compromiso con la prevención de enfermedades caninas.

Hoy en día tenemos muchos clientes que limpian los dientes todos los días a su mascota, y como resultado, se ahorran el dinero de hacer limpiezas dentales profesionales y consiguen una mejor salud de su perro.


Limpiezas dentales profesionales de perros y gatos

Recomendamos hacer una limpieza dental especializada anualmente. La realizamos con un aparato de ultrasonidos que utiliza agua para quitar el sarro. Después, procedemos a pulir los dientes con un cepillo de alta velocidad y una pasta especial. Hacemos esto para proteger el esmalte.

La frecuencia de limpiezas dentales necesaria varía mucho entre razas. En general, las razas grandes tienen buena calidad de esmalte, por lo que no necesitan hacerlo tan a menudo e incluso pueden pasarse la vida sin requerir una limpieza. Sin embargo, razas pequeñas como el Yorkshire o el Maltés, deben hacérselas todos los años desde cachorros si se quiere conservar sus piezas dentales.

Otro factor fundamental es la calidad del pienso. Algunas marcas han diseñado croquetas que limpian la superficie del diente y de la muela al masticarse.

Ultrasonido para perros

¿Se necesita anestesia para las limpiezas dentales de perros y gatos?

La limpieza dental en perros no es una técnica que pueda practicarse sin anestesia general , aunque hay veces que los propietarios no quieren anestesiar y si tiene poco sarro y el perro es muy bueno se puede intentar…… , pero no se va a poder pulir ni acceder a todas la zona de la boca …. Además los limpiadores dentales van a irrigar agua y hay riesgo de aspiración a vías respiratorias si no se realiza una anestesia correcta con intubación traqueal . En resumen , sin anestesia no se va hacer una correcta limpieza dental.

Tampoco sirve la sedación ya que necesitamos que el animal esté totalmente quieto, y el veterinario tenga un acceso completo a todas sus piezas dentales y encías.

Alimentos para la limpieza dental

Hay que tener cierto cuidado a la hora de comprar determinados alimentos porque no todos son saludables. Algunos tienen demasiado contenido graso, que en exceso puede causar problemas cardiovasculares y obesidad.

Los mejores alimentos para los dientes son aquellos que están elaborados por empresas farmacéuticas y llevan componentes químicos con tratamientos específicos para el diente del perro. Esto implica no solo limpieza a través de la acción mecánica de morder sino también un tratamiento antibacteriano para prevenir el sarro.

Conclusión

Si eres como la mayoría de dueños, por falta de tiempo , es probable que no estés prestando la suficiente atención a la limpieza dental de tu perro. Por eso te animamos a que comiences a limpiar los dientes de tu perro y consideres atender a su higiene bucal con frecuencia.

Estas simples medidas pueden conllevar a que tu perro tenga una vida más larga y mucho más saludable.

Si te resulta imposible introducir un cepillo de dientes a tu perro en la boca, pásate con él por clínica Tus Veterinarios y te explicamos cómo hacerlo.

Necesitas hacer una limpieza dental profesional a tu mascota?
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