晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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<?php declare(strict_types=1);
/*
* This file is part of sebastian/code-unit-reverse-lookup.
*
* (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\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;
class Wizard
{
/**
* @psalm-var array<string,array<int,string>>
*/
private array $lookupTable = [];
/**
* @psalm-var array<class-string,true>
*/
private array $processedClasses = [];
/**
* @psalm-var array<string,true>
*/
private array $processedFunctions = [];
public function lookup(string $filename, int $lineNumber): string
{
if (!isset($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();
$traits = get_declared_traits();
/* @noinspection PhpConditionAlreadyCheckedInspection */
assert(is_array($traits));
foreach (array_merge($classes, $traits) as $classOrTrait) {
if (isset($this->processedClasses[$classOrTrait])) {
continue;
}
foreach ((new ReflectionClass($classOrTrait))->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;
}
}
}