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<?php |
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namespace HumbugBox451\Composer\Semver\Constraint; |
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/** @internal */ |
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class MultiConstraint implements ConstraintInterface |
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{ |
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/** |
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@phpstan-var |
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*/ |
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protected $constraints; |
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protected $prettyString; |
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protected $string; |
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protected $conjunctive; |
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protected $lowerBound; |
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protected $upperBound; |
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public function __construct(array $constraints, $conjunctive = \true) |
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{ |
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if (\count($constraints) < 2) { |
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throw new \InvalidArgumentException('Must provide at least two constraints for a MultiConstraint. Use ' . 'the regular Constraint class for one constraint only or MatchAllConstraint for none. You may use ' . 'MultiConstraint::create() which optimizes and handles those cases automatically.'); |
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} |
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$this->constraints = $constraints; |
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$this->conjunctive = $conjunctive; |
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} |
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public function getConstraints() |
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{ |
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return $this->constraints; |
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} |
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public function isConjunctive() |
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{ |
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return $this->conjunctive; |
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} |
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public function isDisjunctive() |
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{ |
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return !$this->conjunctive; |
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} |
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public function compile($otherOperator) |
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{ |
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$parts = array(); |
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foreach ($this->constraints as $constraint) { |
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$code = $constraint->compile($otherOperator); |
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if ($code === 'true') { |
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if (!$this->conjunctive) { |
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return 'true'; |
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} |
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} elseif ($code === 'false') { |
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if ($this->conjunctive) { |
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return 'false'; |
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} |
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} else { |
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$parts[] = '(' . $code . ')'; |
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} |
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} |
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if (!$parts) { |
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return $this->conjunctive ? 'true' : 'false'; |
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} |
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return $this->conjunctive ? \implode('&&', $parts) : \implode('||', $parts); |
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} |
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public function matches(ConstraintInterface $provider) |
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{ |
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if (\false === $this->conjunctive) { |
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foreach ($this->constraints as $constraint) { |
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if ($provider->matches($constraint)) { |
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return \true; |
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} |
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} |
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return \false; |
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} |
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if ($provider instanceof MultiConstraint && $provider->isDisjunctive()) { |
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return $provider->matches($this); |
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} |
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foreach ($this->constraints as $constraint) { |
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if (!$provider->matches($constraint)) { |
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return \false; |
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} |
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} |
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return \true; |
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} |
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public function setPrettyString($prettyString) |
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{ |
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$this->prettyString = $prettyString; |
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} |
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public function getPrettyString() |
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{ |
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if ($this->prettyString) { |
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return $this->prettyString; |
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} |
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return (string) $this; |
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} |
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public function __toString() |
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{ |
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if ($this->string !== null) { |
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return $this->string; |
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} |
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$constraints = array(); |
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foreach ($this->constraints as $constraint) { |
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$constraints[] = (string) $constraint; |
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} |
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return $this->string = '[' . \implode($this->conjunctive ? ' ' : ' || ', $constraints) . ']'; |
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} |
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public function getLowerBound() |
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{ |
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$this->extractBounds(); |
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if (null === $this->lowerBound) { |
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throw new \LogicException('extractBounds should have populated the lowerBound property'); |
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} |
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return $this->lowerBound; |
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} |
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public function getUpperBound() |
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{ |
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$this->extractBounds(); |
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if (null === $this->upperBound) { |
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throw new \LogicException('extractBounds should have populated the upperBound property'); |
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} |
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return $this->upperBound; |
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} |
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public static function create(array $constraints, $conjunctive = \true) |
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{ |
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if (0 === \count($constraints)) { |
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return new MatchAllConstraint(); |
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} |
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if (1 === \count($constraints)) { |
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return $constraints[0]; |
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} |
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$optimized = self::optimizeConstraints($constraints, $conjunctive); |
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if ($optimized !== null) { |
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list($constraints, $conjunctive) = $optimized; |
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if (\count($constraints) === 1) { |
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return $constraints[0]; |
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} |
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} |
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return new self($constraints, $conjunctive); |
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} |
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/** |
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@phpstan-return |
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*/ |
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private static function optimizeConstraints(array $constraints, $conjunctive) |
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{ |
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if (!$conjunctive) { |
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$left = $constraints[0]; |
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$mergedConstraints = array(); |
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$optimized = \false; |
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for ($i = 1, $l = \count($constraints); $i < $l; $i++) { |
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$right = $constraints[$i]; |
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if ($left instanceof self && $left->conjunctive && $right instanceof self && $right->conjunctive && \count($left->constraints) === 2 && \count($right->constraints) === 2 && ($left0 = (string) $left->constraints[0]) && $left0[0] === '>' && $left0[1] === '=' && ($left1 = (string) $left->constraints[1]) && $left1[0] === '<' && ($right0 = (string) $right->constraints[0]) && $right0[0] === '>' && $right0[1] === '=' && ($right1 = (string) $right->constraints[1]) && $right1[0] === '<' && \substr($left1, 2) === \substr($right0, 3)) { |
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$optimized = \true; |
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$left = new MultiConstraint(array($left->constraints[0], $right->constraints[1]), \true); |
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} else { |
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$mergedConstraints[] = $left; |
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$left = $right; |
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} |
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} |
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if ($optimized) { |
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$mergedConstraints[] = $left; |
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return array($mergedConstraints, \false); |
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} |
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} |
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return null; |
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} |
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private function extractBounds() |
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{ |
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if (null !== $this->lowerBound) { |
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return; |
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} |
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foreach ($this->constraints as $constraint) { |
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if (null === $this->lowerBound || null === $this->upperBound) { |
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$this->lowerBound = $constraint->getLowerBound(); |
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$this->upperBound = $constraint->getUpperBound(); |
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continue; |
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} |
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if ($constraint->getLowerBound()->compareTo($this->lowerBound, $this->isConjunctive() ? '>' : '<')) { |
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$this->lowerBound = $constraint->getLowerBound(); |
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} |
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if ($constraint->getUpperBound()->compareTo($this->upperBound, $this->isConjunctive() ? '<' : '>')) { |
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$this->upperBound = $constraint->getUpperBound(); |
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} |
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} |
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} |
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} |
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