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);
namespace Rector\Naming\Naming;
use PhpParser\Node\Expr\ArrowFunction;
use PhpParser\Node\Expr\Assign;
use PhpParser\Node\Expr\Closure;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Function_;
use Rector\Naming\ExpectedNameResolver\MatchParamTypeExpectedNameResolver;
use Rector\Naming\PhpArray\ArrayFilter;
use Rector\NodeManipulator\FunctionLikeManipulator;
use Rector\PhpParser\Node\BetterNodeFinder;
final class ConflictingNameResolver
{
/**
* @readonly
* @var \Rector\Naming\PhpArray\ArrayFilter
*/
private $arrayFilter;
/**
* @readonly
* @var \Rector\PhpParser\Node\BetterNodeFinder
*/
private $betterNodeFinder;
/**
* @readonly
* @var \Rector\Naming\Naming\ExpectedNameResolver
*/
private $expectedNameResolver;
/**
* @readonly
* @var \Rector\Naming\ExpectedNameResolver\MatchParamTypeExpectedNameResolver
*/
private $matchParamTypeExpectedNameResolver;
/**
* @readonly
* @var \Rector\NodeManipulator\FunctionLikeManipulator
*/
private $functionLikeManipulator;
/**
* @var array<int, string[]>
*/
private $conflictingVariableNamesByClassMethod = [];
public function __construct(ArrayFilter $arrayFilter, BetterNodeFinder $betterNodeFinder, \Rector\Naming\Naming\ExpectedNameResolver $expectedNameResolver, MatchParamTypeExpectedNameResolver $matchParamTypeExpectedNameResolver, FunctionLikeManipulator $functionLikeManipulator)
{
$this->arrayFilter = $arrayFilter;
$this->betterNodeFinder = $betterNodeFinder;
$this->expectedNameResolver = $expectedNameResolver;
$this->matchParamTypeExpectedNameResolver = $matchParamTypeExpectedNameResolver;
$this->functionLikeManipulator = $functionLikeManipulator;
}
/**
* @return string[]
* @param \PhpParser\Node\Stmt\ClassMethod|\PhpParser\Node\Stmt\Function_|\PhpParser\Node\Expr\Closure|\PhpParser\Node\Expr\ArrowFunction $classMethod
*/
public function resolveConflictingVariableNamesForParam($classMethod) : array
{
$expectedNames = [];
foreach ($classMethod->params as $param) {
$expectedName = $this->matchParamTypeExpectedNameResolver->resolve($param);
if ($expectedName === null) {
continue;
}
$expectedNames[] = $expectedName;
}
return $this->arrayFilter->filterWithAtLeastTwoOccurences($expectedNames);
}
/**
* @param \PhpParser\Node\Stmt\ClassMethod|\PhpParser\Node\Stmt\Function_|\PhpParser\Node\Expr\Closure|\PhpParser\Node\Expr\ArrowFunction $functionLike
*/
public function hasNameIsInFunctionLike(string $variableName, $functionLike) : bool
{
$conflictingVariableNames = $this->resolveConflictingVariableNamesForNew($functionLike);
return \in_array($variableName, $conflictingVariableNames, \true);
}
/**
* @return string[]
* @param \PhpParser\Node\Stmt\ClassMethod|\PhpParser\Node\Stmt\Function_|\PhpParser\Node\Expr\Closure|\PhpParser\Node\Expr\ArrowFunction $functionLike
*/
private function resolveConflictingVariableNamesForNew($functionLike) : array
{
// cache it!
$classMethodId = \spl_object_id($functionLike);
if (isset($this->conflictingVariableNamesByClassMethod[$classMethodId])) {
return $this->conflictingVariableNamesByClassMethod[$classMethodId];
}
$paramNames = $this->functionLikeManipulator->resolveParamNames($functionLike);
$newAssignNames = $this->resolveForNewAssigns($functionLike);
$nonNewAssignNames = $this->resolveForNonNewAssigns($functionLike);
$protectedNames = \array_merge($paramNames, $newAssignNames, $nonNewAssignNames);
$protectedNames = $this->arrayFilter->filterWithAtLeastTwoOccurences($protectedNames);
$this->conflictingVariableNamesByClassMethod[$classMethodId] = $protectedNames;
return $protectedNames;
}
/**
* @return string[]
* @param \PhpParser\Node\Stmt\ClassMethod|\PhpParser\Node\Stmt\Function_|\PhpParser\Node\Expr\Closure|\PhpParser\Node\Expr\ArrowFunction $functionLike
*/
private function resolveForNewAssigns($functionLike) : array
{
$names = [];
/** @var Assign[] $assigns */
$assigns = $this->betterNodeFinder->findInstanceOf((array) $functionLike->getStmts(), Assign::class);
foreach ($assigns as $assign) {
$name = $this->expectedNameResolver->resolveForAssignNew($assign);
if ($name === null) {
continue;
}
$names[] = $name;
}
return $names;
}
/**
* @return string[]
* @param \PhpParser\Node\Stmt\ClassMethod|\PhpParser\Node\Stmt\Function_|\PhpParser\Node\Expr\Closure|\PhpParser\Node\Expr\ArrowFunction $functionLike
*/
private function resolveForNonNewAssigns($functionLike) : array
{
$names = [];
/** @var Assign[] $assigns */
$assigns = $this->betterNodeFinder->findInstanceOf((array) $functionLike->getStmts(), Assign::class);
foreach ($assigns as $assign) {
$name = $this->expectedNameResolver->resolveForAssignNonNew($assign);
if ($name === null) {
continue;
}
$names[] = $name;
}
return $names;
}
}