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ParsingFileAnalyser.php
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ParsingFileAnalyser.php
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<?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_merge;
use function array_unique;
use function assert;
use function file_get_contents;
use function is_array;
use function max;
use function range;
use function sort;
use function sprintf;
use function substr_count;
use function token_get_all;
use function trim;
use PhpParser\Error;
use PhpParser\NodeTraverser;
use PhpParser\NodeVisitor\NameResolver;
use PhpParser\NodeVisitor\ParentConnectingVisitor;
use PhpParser\ParserFactory;
use SebastianBergmann\CodeCoverage\ParserException;
use SebastianBergmann\LinesOfCode\LineCountingVisitor;
/**
* @internal This class is not covered by the backward compatibility promise for phpunit/php-code-coverage
*/
final class ParsingFileAnalyser implements FileAnalyser
{
/**
* @var array
*/
private $classes = [];
/**
* @var array
*/
private $traits = [];
/**
* @var array
*/
private $functions = [];
/**
* @var array<string,array{linesOfCode: int, commentLinesOfCode: int, nonCommentLinesOfCode: int}>
*/
private $linesOfCode = [];
/**
* @var array
*/
private $ignoredLines = [];
/**
* @var array
*/
private $executableLines = [];
/**
* @var bool
*/
private $useAnnotationsForIgnoringCode;
/**
* @var bool
*/
private $ignoreDeprecatedCode;
public function __construct(bool $useAnnotationsForIgnoringCode, bool $ignoreDeprecatedCode)
{
$this->useAnnotationsForIgnoringCode = $useAnnotationsForIgnoringCode;
$this->ignoreDeprecatedCode = $ignoreDeprecatedCode;
}
public function classesIn(string $filename): array
{
$this->analyse($filename);
return $this->classes[$filename];
}
public function traitsIn(string $filename): array
{
$this->analyse($filename);
return $this->traits[$filename];
}
public function functionsIn(string $filename): array
{
$this->analyse($filename);
return $this->functions[$filename];
}
/**
* @psalm-return array{linesOfCode: int, commentLinesOfCode: int, nonCommentLinesOfCode: int}
*/
public function linesOfCodeFor(string $filename): array
{
$this->analyse($filename);
return $this->linesOfCode[$filename];
}
public function executableLinesIn(string $filename): array
{
$this->analyse($filename);
return $this->executableLines[$filename];
}
public function ignoredLinesFor(string $filename): array
{
$this->analyse($filename);
return $this->ignoredLines[$filename];
}
/**
* @throws ParserException
*/
private function analyse(string $filename): void
{
if (isset($this->classes[$filename])) {
return;
}
$source = file_get_contents($filename);
$linesOfCode = max(substr_count($source, "\n") + 1, substr_count($source, "\r") + 1);
if ($linesOfCode === 0 && !empty($source)) {
$linesOfCode = 1;
}
$parser = (new ParserFactory)->createForHostVersion();
try {
$nodes = $parser->parse($source);
assert($nodes !== null);
$traverser = new NodeTraverser;
$codeUnitFindingVisitor = new CodeUnitFindingVisitor;
$lineCountingVisitor = new LineCountingVisitor($linesOfCode);
$ignoredLinesFindingVisitor = new IgnoredLinesFindingVisitor($this->useAnnotationsForIgnoringCode, $this->ignoreDeprecatedCode);
$executableLinesFindingVisitor = new ExecutableLinesFindingVisitor($source);
$traverser->addVisitor(new NameResolver);
$traverser->addVisitor(new ParentConnectingVisitor);
$traverser->addVisitor($codeUnitFindingVisitor);
$traverser->addVisitor($lineCountingVisitor);
$traverser->addVisitor($ignoredLinesFindingVisitor);
$traverser->addVisitor($executableLinesFindingVisitor);
/* @noinspection UnusedFunctionResultInspection */
$traverser->traverse($nodes);
// @codeCoverageIgnoreStart
} catch (Error $error) {
throw new ParserException(
sprintf(
'Cannot parse %s: %s',
$filename,
$error->getMessage()
),
$error->getCode(),
$error
);
}
// @codeCoverageIgnoreEnd
$this->classes[$filename] = $codeUnitFindingVisitor->classes();
$this->traits[$filename] = $codeUnitFindingVisitor->traits();
$this->functions[$filename] = $codeUnitFindingVisitor->functions();
$this->executableLines[$filename] = $executableLinesFindingVisitor->executableLinesGroupedByBranch();
$this->ignoredLines[$filename] = [];
$this->findLinesIgnoredByLineBasedAnnotations($filename, $source, $this->useAnnotationsForIgnoringCode);
$this->ignoredLines[$filename] = array_unique(
array_merge(
$this->ignoredLines[$filename],
$ignoredLinesFindingVisitor->ignoredLines()
)
);
sort($this->ignoredLines[$filename]);
$result = $lineCountingVisitor->result();
$this->linesOfCode[$filename] = [
'linesOfCode' => $result->linesOfCode(),
'commentLinesOfCode' => $result->commentLinesOfCode(),
'nonCommentLinesOfCode' => $result->nonCommentLinesOfCode(),
];
}
private function findLinesIgnoredByLineBasedAnnotations(string $filename, string $source, bool $useAnnotationsForIgnoringCode): void
{
if (!$useAnnotationsForIgnoringCode) {
return;
}
$start = false;
foreach (token_get_all($source) as $token) {
if (!is_array($token) ||
!(T_COMMENT === $token[0] || T_DOC_COMMENT === $token[0])) {
continue;
}
$comment = trim($token[1]);
if ($comment === '// @codeCoverageIgnore' ||
$comment === '//@codeCoverageIgnore') {
$this->ignoredLines[$filename][] = $token[2];
continue;
}
if ($comment === '// @codeCoverageIgnoreStart' ||
$comment === '//@codeCoverageIgnoreStart') {
$start = $token[2];
continue;
}
if ($comment === '// @codeCoverageIgnoreEnd' ||
$comment === '//@codeCoverageIgnoreEnd') {
if (false === $start) {
$start = $token[2];
}
$this->ignoredLines[$filename] = array_merge(
$this->ignoredLines[$filename],
range($start, $token[2])
);
}
}
}
}

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