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365
vendor/phpunit/php-code-coverage/src/StaticAnalysis/ExecutableLinesFindingVisitor.php
vendored
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365
vendor/phpunit/php-code-coverage/src/StaticAnalysis/ExecutableLinesFindingVisitor.php
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<?php declare(strict_types=1);
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/*
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* This file is part of phpunit/php-code-coverage.
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*
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* (c) Sebastian Bergmann <sebastian@phpunit.de>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace SebastianBergmann\CodeCoverage\StaticAnalysis;
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use function array_diff_key;
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use function assert;
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use function count;
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use function current;
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use function end;
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use function explode;
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use function max;
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use function preg_match;
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use function preg_quote;
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use function range;
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use function reset;
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use function sprintf;
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use PhpParser\Node;
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use PhpParser\NodeVisitorAbstract;
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/**
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* @internal This class is not covered by the backward compatibility promise for phpunit/php-code-coverage
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*/
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final class ExecutableLinesFindingVisitor extends NodeVisitorAbstract
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{
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/**
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* @var int
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*/
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private $nextBranch = 0;
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/**
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* @var string
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*/
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private $source;
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/**
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* @var array<int, int>
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*/
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private $executableLinesGroupedByBranch = [];
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/**
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* @var array<int, bool>
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*/
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private $unsets = [];
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/**
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* @var array<int, string>
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*/
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private $commentsToCheckForUnset = [];
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public function __construct(string $source)
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{
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$this->source = $source;
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}
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public function enterNode(Node $node): void
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{
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foreach ($node->getComments() as $comment) {
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$commentLine = $comment->getStartLine();
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if (!isset($this->executableLinesGroupedByBranch[$commentLine])) {
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continue;
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}
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foreach (explode("\n", $comment->getText()) as $text) {
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$this->commentsToCheckForUnset[$commentLine] = $text;
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$commentLine++;
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}
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}
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if ($node instanceof Node\Scalar\String_ ||
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$node instanceof Node\Scalar\EncapsedStringPart) {
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$startLine = $node->getStartLine() + 1;
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$endLine = $node->getEndLine() - 1;
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if ($startLine <= $endLine) {
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foreach (range($startLine, $endLine) as $line) {
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unset($this->executableLinesGroupedByBranch[$line]);
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}
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}
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return;
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}
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if ($node instanceof Node\Stmt\Declare_ ||
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$node instanceof Node\Stmt\DeclareDeclare ||
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$node instanceof Node\Stmt\Else_ ||
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$node instanceof Node\Stmt\EnumCase ||
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$node instanceof Node\Stmt\Finally_ ||
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$node instanceof Node\Stmt\Interface_ ||
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$node instanceof Node\Stmt\Label ||
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$node instanceof Node\Stmt\Namespace_ ||
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$node instanceof Node\Stmt\Nop ||
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$node instanceof Node\Stmt\Switch_ ||
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$node instanceof Node\Stmt\TryCatch ||
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$node instanceof Node\Stmt\Use_ ||
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$node instanceof Node\Stmt\UseUse ||
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$node instanceof Node\Expr\Match_ ||
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$node instanceof Node\Expr\Variable ||
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$node instanceof Node\ComplexType ||
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$node instanceof Node\Const_ ||
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$node instanceof Node\Identifier ||
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$node instanceof Node\Name ||
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$node instanceof Node\Param ||
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$node instanceof Node\Scalar) {
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return;
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}
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if ($node instanceof Node\Stmt\Throw_) {
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$this->setLineBranch($node->expr->getEndLine(), $node->expr->getEndLine(), ++$this->nextBranch);
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return;
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}
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if ($node instanceof Node\Stmt\Enum_ ||
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$node instanceof Node\Stmt\Function_ ||
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$node instanceof Node\Stmt\Class_ ||
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$node instanceof Node\Stmt\ClassMethod ||
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$node instanceof Node\Expr\Closure ||
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$node instanceof Node\Stmt\Trait_) {
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$isConcreteClassLike = $node instanceof Node\Stmt\Enum_ || $node instanceof Node\Stmt\Class_ || $node instanceof Node\Stmt\Trait_;
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if (null !== $node->stmts) {
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foreach ($node->stmts as $stmt) {
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if ($stmt instanceof Node\Stmt\Nop) {
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continue;
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}
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foreach (range($stmt->getStartLine(), $stmt->getEndLine()) as $line) {
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unset($this->executableLinesGroupedByBranch[$line]);
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if (
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$isConcreteClassLike &&
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!$stmt instanceof Node\Stmt\ClassMethod
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) {
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$this->unsets[$line] = true;
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}
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}
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}
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}
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if ($isConcreteClassLike) {
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return;
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}
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$hasEmptyBody = [] === $node->stmts ||
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null === $node->stmts ||
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(
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1 === count($node->stmts) &&
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$node->stmts[0] instanceof Node\Stmt\Nop
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);
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if ($hasEmptyBody) {
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if ($node->getEndLine() === $node->getStartLine()) {
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return;
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}
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$this->setLineBranch($node->getEndLine(), $node->getEndLine(), ++$this->nextBranch);
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return;
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}
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return;
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}
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if ($node instanceof Node\Expr\ArrowFunction) {
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$startLine = max(
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$node->getStartLine() + 1,
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$node->expr->getStartLine()
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);
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$endLine = $node->expr->getEndLine();
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if ($endLine < $startLine) {
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return;
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}
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$this->setLineBranch($startLine, $endLine, ++$this->nextBranch);
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return;
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}
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if ($node instanceof Node\Expr\Ternary) {
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if (null !== $node->if &&
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$node->getStartLine() !== $node->if->getEndLine()) {
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$this->setLineBranch($node->if->getStartLine(), $node->if->getEndLine(), ++$this->nextBranch);
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}
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if ($node->getStartLine() !== $node->else->getEndLine()) {
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$this->setLineBranch($node->else->getStartLine(), $node->else->getEndLine(), ++$this->nextBranch);
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}
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return;
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}
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if ($node instanceof Node\Expr\BinaryOp\Coalesce) {
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if ($node->getStartLine() !== $node->getEndLine()) {
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$this->setLineBranch($node->getEndLine(), $node->getEndLine(), ++$this->nextBranch);
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}
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return;
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}
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if ($node instanceof Node\Stmt\If_ ||
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$node instanceof Node\Stmt\ElseIf_ ||
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$node instanceof Node\Stmt\Case_) {
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if (null === $node->cond) {
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return;
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}
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$this->setLineBranch(
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$node->cond->getStartLine(),
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$node->cond->getStartLine(),
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++$this->nextBranch
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);
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return;
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}
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if ($node instanceof Node\Stmt\For_) {
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$startLine = null;
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$endLine = null;
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if ([] !== $node->init) {
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$startLine = $node->init[0]->getStartLine();
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end($node->init);
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$endLine = current($node->init)->getEndLine();
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reset($node->init);
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}
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if ([] !== $node->cond) {
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if (null === $startLine) {
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$startLine = $node->cond[0]->getStartLine();
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}
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end($node->cond);
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$endLine = current($node->cond)->getEndLine();
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reset($node->cond);
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}
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if ([] !== $node->loop) {
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if (null === $startLine) {
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$startLine = $node->loop[0]->getStartLine();
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}
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end($node->loop);
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$endLine = current($node->loop)->getEndLine();
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reset($node->loop);
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}
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if (null === $startLine || null === $endLine) {
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return;
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}
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$this->setLineBranch(
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$startLine,
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$endLine,
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++$this->nextBranch
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);
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return;
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}
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if ($node instanceof Node\Stmt\Foreach_) {
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$this->setLineBranch(
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$node->expr->getStartLine(),
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$node->valueVar->getEndLine(),
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++$this->nextBranch
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);
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return;
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}
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if ($node instanceof Node\Stmt\While_ ||
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$node instanceof Node\Stmt\Do_) {
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$this->setLineBranch(
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$node->cond->getStartLine(),
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$node->cond->getEndLine(),
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++$this->nextBranch
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);
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return;
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}
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if ($node instanceof Node\Stmt\Catch_) {
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assert([] !== $node->types);
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$startLine = $node->types[0]->getStartLine();
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end($node->types);
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$endLine = current($node->types)->getEndLine();
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$this->setLineBranch(
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$startLine,
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$endLine,
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++$this->nextBranch
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);
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return;
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}
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if ($node instanceof Node\Expr\CallLike) {
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if (isset($this->executableLinesGroupedByBranch[$node->getStartLine()])) {
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$branch = $this->executableLinesGroupedByBranch[$node->getStartLine()];
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} else {
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$branch = ++$this->nextBranch;
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}
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$this->setLineBranch($node->getStartLine(), $node->getEndLine(), $branch);
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return;
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}
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if (isset($this->executableLinesGroupedByBranch[$node->getStartLine()])) {
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return;
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}
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$this->setLineBranch($node->getStartLine(), $node->getEndLine(), ++$this->nextBranch);
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}
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public function afterTraverse(array $nodes): void
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{
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$lines = explode("\n", $this->source);
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foreach ($lines as $lineNumber => $line) {
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$lineNumber++;
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if (1 === preg_match('/^\s*$/', $line) ||
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(
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isset($this->commentsToCheckForUnset[$lineNumber]) &&
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1 === preg_match(sprintf('/^\s*%s\s*$/', preg_quote($this->commentsToCheckForUnset[$lineNumber], '/')), $line)
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)) {
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unset($this->executableLinesGroupedByBranch[$lineNumber]);
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}
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}
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$this->executableLinesGroupedByBranch = array_diff_key(
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$this->executableLinesGroupedByBranch,
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$this->unsets
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);
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}
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public function executableLinesGroupedByBranch(): array
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{
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return $this->executableLinesGroupedByBranch;
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}
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private function setLineBranch(int $start, int $end, int $branch): void
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{
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foreach (range($start, $end) as $line) {
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$this->executableLinesGroupedByBranch[$line] = $branch;
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}
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}
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}
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