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<?php declare(strict_types=1);
/*
* This file is part of sebastian/code-unit-reverse-lookup.
*
* (c) Sebastian Bergmann <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\CodeUnitReverseLookup;
use function array_merge;
use function assert;
use function get_declared_classes;
use function get_declared_traits;
use function get_defined_functions;
use function is_array;
use function range;
use ReflectionClass;
use ReflectionFunction;
use ReflectionFunctionAbstract;
use ReflectionMethod;
/**
* @since Class available since Release 1.0.0
*/
class Wizard
{
/**
* @var array
*/
private $lookupTable = [];
/**
* @var array
*/
private $processedClasses = [];
/**
* @var array
*/
private $processedFunctions = [];
/**
* @param string $filename
* @param int $lineNumber
*
* @return string
*/
public function lookup($filename, $lineNumber)
{
if (!isset($this->lookupTable[$filename][$lineNumber])) {
$this->updateLookupTable();
}
if (isset($this->lookupTable[$filename][$lineNumber])) {
return $this->lookupTable[$filename][$lineNumber];
}
return $filename . ':' . $lineNumber;
}
private function updateLookupTable(): void
{
$this->processClassesAndTraits();
$this->processFunctions();
}
private function processClassesAndTraits(): void
{
$classes = get_declared_classes();
$traits = get_declared_traits();
assert(is_array($classes));
assert(is_array($traits));
foreach (array_merge($classes, $traits) as $classOrTrait) {
if (isset($this->processedClasses[$classOrTrait])) {
continue;
}
$reflector = new ReflectionClass($classOrTrait);
foreach ($reflector->getMethods() as $method) {
$this->processFunctionOrMethod($method);
}
$this->processedClasses[$classOrTrait] = true;
}
}
private function processFunctions(): void
{
foreach (get_defined_functions()['user'] as $function) {
if (isset($this->processedFunctions[$function])) {
continue;
}
$this->processFunctionOrMethod(new ReflectionFunction($function));
$this->processedFunctions[$function] = true;
}
}
private function processFunctionOrMethod(ReflectionFunctionAbstract $functionOrMethod): void
{
if ($functionOrMethod->isInternal()) {
return;
}
$name = $functionOrMethod->getName();
if ($functionOrMethod instanceof ReflectionMethod) {
$name = $functionOrMethod->getDeclaringClass()->getName() . '::' . $name;
}
if (!isset($this->lookupTable[$functionOrMethod->getFileName()])) {
$this->lookupTable[$functionOrMethod->getFileName()] = [];
}
foreach (range($functionOrMethod->getStartLine(), $functionOrMethod->getEndLine()) as $line) {
$this->lookupTable[$functionOrMethod->getFileName()][$line] = $name;
}
}
}
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