Subversion-Projekte lars-tiefland.laravel_shop

<?php declare(strict_types=1);

/*

 * This file is part of phpunit/php-code-coverage.

 *

 * (c) Sebastian Bergmann <sebastian@phpunit.de>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace SebastianBergmann\CodeCoverage\StaticAnalysis;

use function array_diff_key;

use function assert;

use function count;

use function current;

use function end;

use function explode;

use function max;

use function preg_match;

use function preg_quote;

use function range;

use function reset;

use function sprintf;

use PhpParser\Node;

use PhpParser\NodeVisitorAbstract;

/**

 * @internal This class is not covered by the backward compatibility promise for phpunit/php-code-coverage

 */

final class ExecutableLinesFindingVisitor extends NodeVisitorAbstract

{

    /**

     * @var int

     */

    private $nextBranch = 0;

    /**

     * @var string

     */

    private $source;

    /**

     * @var array<int, int>

     */

    private $executableLinesGroupedByBranch = [];

    /**

     * @var array<int, bool>

     */

    private $unsets = [];

    /**

     * @var array<int, string>

     */

    private $commentsToCheckForUnset = [];

    public function __construct(string $source)

    {

        $this->source = $source;

    }

    public function enterNode(Node $node): void

    {

        foreach ($node->getComments() as $comment) {

            $commentLine = $comment->getStartLine();

            if (!isset($this->executableLinesGroupedByBranch[$commentLine])) {

                continue;

            }

            foreach (explode("\n", $comment->getText()) as $text) {

                $this->commentsToCheckForUnset[$commentLine] = $text;

                $commentLine++;

            }

        }

        if ($node instanceof Node\Scalar\String_ ||

            $node instanceof Node\Scalar\EncapsedStringPart) {

            $startLine = $node->getStartLine() + 1;

            $endLine   = $node->getEndLine() - 1;

            if ($startLine <= $endLine) {

                foreach (range($startLine, $endLine) as $line) {

                    unset($this->executableLinesGroupedByBranch[$line]);

                }

            }

            return;

        }

        if ($node instanceof Node\Stmt\Interface_) {

            foreach (range($node->getStartLine(), $node->getEndLine()) as $line) {

                $this->unsets[$line] = true;

            }

            return;

        }

        if ($node instanceof Node\Stmt\Declare_ ||

            $node instanceof Node\Stmt\DeclareDeclare ||

            $node instanceof Node\Stmt\Else_ ||

            $node instanceof Node\Stmt\EnumCase ||

            $node instanceof Node\Stmt\Finally_ ||

            $node instanceof Node\Stmt\Label ||

            $node instanceof Node\Stmt\Namespace_ ||

            $node instanceof Node\Stmt\Nop ||

            $node instanceof Node\Stmt\Switch_ ||

            $node instanceof Node\Stmt\TryCatch ||

            $node instanceof Node\Stmt\Use_ ||

            $node instanceof Node\Stmt\UseUse ||

            $node instanceof Node\Expr\ConstFetch ||

            $node instanceof Node\Expr\Match_ ||

            $node instanceof Node\Expr\Variable ||

            $node instanceof Node\ComplexType ||

            $node instanceof Node\Const_ ||

            $node instanceof Node\Identifier ||

            $node instanceof Node\Name ||

            $node instanceof Node\Param ||

            $node instanceof Node\Scalar) {

            return;

        }

        if ($node instanceof Node\Stmt\Throw_) {

            $this->setLineBranch($node->expr->getEndLine(), $node->expr->getEndLine(), ++$this->nextBranch);

            return;

        }

        if ($node instanceof Node\Stmt\Enum_ ||

            $node instanceof Node\Stmt\Function_ ||

            $node instanceof Node\Stmt\Class_ ||

            $node instanceof Node\Stmt\ClassMethod ||

            $node instanceof Node\Expr\Closure ||

            $node instanceof Node\Stmt\Trait_) {

            $isConcreteClassLike = $node instanceof Node\Stmt\Enum_ || $node instanceof Node\Stmt\Class_ || $node instanceof Node\Stmt\Trait_;

            if (null !== $node->stmts) {

                foreach ($node->stmts as $stmt) {

                    if ($stmt instanceof Node\Stmt\Nop) {

                        continue;

                    }

                    foreach (range($stmt->getStartLine(), $stmt->getEndLine()) as $line) {

                        unset($this->executableLinesGroupedByBranch[$line]);

                        if (

                            $isConcreteClassLike &&

                            !$stmt instanceof Node\Stmt\ClassMethod

                        ) {

                            $this->unsets[$line] = true;

                        }

                    }

                }

            }

            if ($isConcreteClassLike) {

                return;

            }

            $hasEmptyBody = [] === $node->stmts ||

                null === $node->stmts ||

                (

                    1 === count($node->stmts) &&

                    $node->stmts[0] instanceof Node\Stmt\Nop

                );

            if ($hasEmptyBody) {

                if ($node->getEndLine() === $node->getStartLine()) {

                    return;

                }

                $this->setLineBranch($node->getEndLine(), $node->getEndLine(), ++$this->nextBranch);

                return;

            }

            return;

        }

        if ($node instanceof Node\Expr\ArrowFunction) {

            $startLine = max(

                $node->getStartLine() + 1,

                $node->expr->getStartLine()

            );

            $endLine = $node->expr->getEndLine();

            if ($endLine < $startLine) {

                return;

            }

            $this->setLineBranch($startLine, $endLine, ++$this->nextBranch);

            return;

        }

        if ($node instanceof Node\Expr\Ternary) {

            if (null !== $node->if &&

                $node->getStartLine() !== $node->if->getEndLine()) {

                $this->setLineBranch($node->if->getStartLine(), $node->if->getEndLine(), ++$this->nextBranch);

            }

            if ($node->getStartLine() !== $node->else->getEndLine()) {

                $this->setLineBranch($node->else->getStartLine(), $node->else->getEndLine(), ++$this->nextBranch);

            }

            return;

        }

        if ($node instanceof Node\Expr\BinaryOp\Coalesce) {

            if ($node->getStartLine() !== $node->getEndLine()) {

                $this->setLineBranch($node->getEndLine(), $node->getEndLine(), ++$this->nextBranch);

            }

            return;

        }

        if ($node instanceof Node\Stmt\If_ ||

            $node instanceof Node\Stmt\ElseIf_ ||

            $node instanceof Node\Stmt\Case_) {

            if (null === $node->cond) {

                return;

            }

            $this->setLineBranch(

                $node->cond->getStartLine(),

                $node->cond->getStartLine(),

                ++$this->nextBranch

            );

            return;

        }

        if ($node instanceof Node\Stmt\For_) {

            $startLine = null;

            $endLine   = null;

            if ([] !== $node->init) {

                $startLine = $node->init[0]->getStartLine();

                end($node->init);

                $endLine = current($node->init)->getEndLine();

                reset($node->init);

            }

            if ([] !== $node->cond) {

                if (null === $startLine) {

                    $startLine = $node->cond[0]->getStartLine();

                }

                end($node->cond);

                $endLine = current($node->cond)->getEndLine();

                reset($node->cond);

            }

            if ([] !== $node->loop) {

                if (null === $startLine) {

                    $startLine = $node->loop[0]->getStartLine();

                }

                end($node->loop);

                $endLine = current($node->loop)->getEndLine();

                reset($node->loop);

            }

            if (null === $startLine || null === $endLine) {

                return;

            }

            $this->setLineBranch(

                $startLine,

                $endLine,

                ++$this->nextBranch

            );

            return;

        }

        if ($node instanceof Node\Stmt\Foreach_) {

            $this->setLineBranch(

                $node->expr->getStartLine(),

                $node->valueVar->getEndLine(),

                ++$this->nextBranch

            );

            return;

        }

        if ($node instanceof Node\Stmt\While_ ||

            $node instanceof Node\Stmt\Do_) {

            $this->setLineBranch(

                $node->cond->getStartLine(),

                $node->cond->getEndLine(),

                ++$this->nextBranch

            );

            return;

        }

        if ($node instanceof Node\Stmt\Catch_) {

            assert([] !== $node->types);

            $startLine = $node->types[0]->getStartLine();

            end($node->types);

            $endLine = current($node->types)->getEndLine();

            $this->setLineBranch(

                $startLine,

                $endLine,

                ++$this->nextBranch

            );

            return;

        }

        if ($node instanceof Node\Expr\CallLike) {

            if (isset($this->executableLinesGroupedByBranch[$node->getStartLine()])) {

                $branch = $this->executableLinesGroupedByBranch[$node->getStartLine()];

            } else {

                $branch = ++$this->nextBranch;

            }

            $this->setLineBranch($node->getStartLine(), $node->getEndLine(), $branch);

            return;

        }

        if (isset($this->executableLinesGroupedByBranch[$node->getStartLine()])) {

            return;

        }

        $this->setLineBranch($node->getStartLine(), $node->getEndLine(), ++$this->nextBranch);

    }

    public function afterTraverse(array $nodes): void

    {

        $lines = explode("\n", $this->source);

        foreach ($lines as $lineNumber => $line) {

            $lineNumber++;

            if (1 === preg_match('/^\s*$/', $line) ||

                (

                    isset($this->commentsToCheckForUnset[$lineNumber]) &&

                    1 === preg_match(sprintf('/^\s*%s\s*$/', preg_quote($this->commentsToCheckForUnset[$lineNumber], '/')), $line)

                )) {

                unset($this->executableLinesGroupedByBranch[$lineNumber]);

            }

        }

        $this->executableLinesGroupedByBranch = array_diff_key(

            $this->executableLinesGroupedByBranch,

            $this->unsets

        );

    }

    public function executableLinesGroupedByBranch(): array

    {

        return $this->executableLinesGroupedByBranch;

    }

    private function setLineBranch(int $start, int $end, int $branch): void

    {

        foreach (range($start, $end) as $line) {

            $this->executableLinesGroupedByBranch[$line] = $branch;

        }

    }

}