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Fix namespaces for Definitions, fix Trait finder in TraitUse, refs #318
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,275 @@ | ||
| <?php | ||
| /** | ||
| * @author Nikita Popov @nikic | ||
| * @link https://github.com/nikic/PHP-Parser/blob/master/lib/PhpParser/NodeVisitor/NameResolver.php | ||
| * | ||
| * @author Patsura Dmitry https://github.com/ovr <talk@dmtry.me> | ||
| */ | ||
|
|
||
| namespace PHPSA\Compiler; | ||
|
|
||
| use PhpParser\Error; | ||
| use PhpParser\ErrorHandler; | ||
| use PhpParser\Node; | ||
| use PhpParser\Node\Expr; | ||
| use PhpParser\Node\Name; | ||
| use PhpParser\Node\Name\FullyQualified; | ||
| use PhpParser\Node\Stmt; | ||
| use PhpParser\NodeVisitorAbstract; | ||
|
|
||
| class NameResolveVisitor extends NodeVisitorAbstract | ||
| { | ||
| /** @var null|Name Current namespace */ | ||
| protected $namespace; | ||
|
|
||
| /** @var array Map of format [aliasType => [aliasName => originalName]] */ | ||
| protected $aliases; | ||
|
|
||
| /** @var ErrorHandler Error handler */ | ||
| protected $errorHandler; | ||
|
|
||
| /** | ||
| * Constructs a name resolution visitor. | ||
| * | ||
| * @param ErrorHandler|null $errorHandler Error handler | ||
| */ | ||
| public function __construct(ErrorHandler $errorHandler = null) | ||
| { | ||
| $this->errorHandler = $errorHandler ?: new ErrorHandler\Throwing; | ||
| } | ||
|
|
||
| /** | ||
| * {@inheritdoc} | ||
| */ | ||
| public function beforeTraverse(array $nodes) | ||
| { | ||
| $this->resetState(); | ||
| } | ||
|
|
||
| /** | ||
| * {@inheritdoc} | ||
| */ | ||
| public function enterNode(Node $node) | ||
| { | ||
| if ($node instanceof Stmt\Namespace_) { | ||
| $this->resetState($node->name); | ||
| } elseif ($node instanceof Stmt\Use_) { | ||
| foreach ($node->uses as $use) { | ||
| $this->addAlias($use, $node->type, null); | ||
| } | ||
| } elseif ($node instanceof Stmt\GroupUse) { | ||
| foreach ($node->uses as $use) { | ||
| $this->addAlias($use, $node->type, $node->prefix); | ||
| } | ||
| } elseif ($node instanceof Stmt\Class_) { | ||
| if (null !== $node->extends) { | ||
| $node->extends = $this->resolveClassName($node->extends); | ||
| } | ||
|
|
||
| foreach ($node->implements as &$interface) { | ||
| $interface = $this->resolveClassName($interface); | ||
| } | ||
|
|
||
| if (null !== $node->name) { | ||
| $this->addNamespacedName($node); | ||
| } | ||
| } elseif ($node instanceof Stmt\Interface_) { | ||
| foreach ($node->extends as &$interface) { | ||
| $interface = $this->resolveClassName($interface); | ||
| } | ||
|
|
||
| $this->addNamespacedName($node); | ||
| } elseif ($node instanceof Stmt\Trait_) { | ||
| $this->addNamespacedName($node); | ||
| } elseif ($node instanceof Stmt\Function_) { | ||
| $this->addNamespacedName($node); | ||
| $this->resolveSignature($node); | ||
| } elseif ($node instanceof Stmt\ClassMethod | ||
| || $node instanceof Expr\Closure | ||
| ) { | ||
| $this->resolveSignature($node); | ||
| } elseif ($node instanceof Stmt\Const_) { | ||
| foreach ($node->consts as $const) { | ||
| $this->addNamespacedName($const); | ||
| } | ||
| } elseif ($node instanceof Expr\StaticCall | ||
| || $node instanceof Expr\StaticPropertyFetch | ||
| || $node instanceof Expr\ClassConstFetch | ||
| || $node instanceof Expr\New_ | ||
| || $node instanceof Expr\Instanceof_ | ||
| ) { | ||
| if ($node->class instanceof Name) { | ||
| $node->class = $this->resolveClassName($node->class); | ||
| } | ||
| } elseif ($node instanceof Stmt\Catch_) { | ||
| foreach ($node->types as &$type) { | ||
| $type = $this->resolveClassName($type); | ||
| } | ||
| } elseif ($node instanceof Expr\FuncCall) { | ||
| if ($node->name instanceof Name) { | ||
| $node->name = $this->resolveOtherName($node->name, Stmt\Use_::TYPE_FUNCTION); | ||
| } | ||
| } elseif ($node instanceof Expr\ConstFetch) { | ||
| $node->name = $this->resolveOtherName($node->name, Stmt\Use_::TYPE_CONSTANT); | ||
| } elseif ($node instanceof Stmt\TraitUse) { | ||
| foreach ($node->traits as &$trait) { | ||
| $trait = $this->resolveClassName($trait); | ||
| } | ||
|
|
||
| foreach ($node->adaptations as $adaptation) { | ||
| if (null !== $adaptation->trait) { | ||
| $adaptation->trait = $this->resolveClassName($adaptation->trait); | ||
| } | ||
|
|
||
| if ($adaptation instanceof Stmt\TraitUseAdaptation\Precedence) { | ||
| foreach ($adaptation->insteadof as &$insteadof) { | ||
| $insteadof = $this->resolveClassName($insteadof); | ||
| } | ||
| } | ||
| } | ||
| } elseif ($node instanceof Node\NullableType) { | ||
| if ($node->type instanceof Name) { | ||
| $node->type = $this->resolveClassName($node->type); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| protected function resetState(Name $namespace = null) | ||
| { | ||
| $this->namespace = $namespace; | ||
| $this->aliases = array( | ||
| Stmt\Use_::TYPE_NORMAL => array(), | ||
| Stmt\Use_::TYPE_FUNCTION => array(), | ||
| Stmt\Use_::TYPE_CONSTANT => array(), | ||
| ); | ||
| } | ||
|
|
||
| protected function addAlias(Stmt\UseUse $use, $type, Name $prefix = null) | ||
| { | ||
| // Add prefix for group uses | ||
| $name = $prefix ? Name::concat($prefix, $use->name) : $use->name; | ||
| // Type is determined either by individual element or whole use declaration | ||
| $type |= $use->type; | ||
|
|
||
| // Constant names are case sensitive, everything else case insensitive | ||
| if ($type === Stmt\Use_::TYPE_CONSTANT) { | ||
| $aliasName = $use->alias; | ||
| } else { | ||
| $aliasName = strtolower($use->alias); | ||
| } | ||
|
|
||
| if (isset($this->aliases[$type][$aliasName])) { | ||
| $typeStringMap = array( | ||
| Stmt\Use_::TYPE_NORMAL => '', | ||
| Stmt\Use_::TYPE_FUNCTION => 'function ', | ||
| Stmt\Use_::TYPE_CONSTANT => 'const ', | ||
| ); | ||
|
|
||
| $this->errorHandler->handleError(new Error( | ||
| sprintf( | ||
| 'Cannot use %s%s as %s because the name is already in use', | ||
| $typeStringMap[$type], | ||
| $name, | ||
| $use->alias | ||
| ), | ||
| $use->getAttributes() | ||
| )); | ||
| return; | ||
| } | ||
|
|
||
| $this->aliases[$type][$aliasName] = $name; | ||
| } | ||
|
|
||
| /** @param Stmt\Function_|Stmt\ClassMethod|Expr\Closure $node */ | ||
| private function resolveSignature($node) | ||
| { | ||
| foreach ($node->params as $param) { | ||
| if ($param->type instanceof Name) { | ||
| $param->type = $this->resolveClassName($param->type); | ||
| } | ||
| } | ||
| if ($node->returnType instanceof Name) { | ||
| $node->returnType = $this->resolveClassName($node->returnType); | ||
| } | ||
| } | ||
|
|
||
| protected function resolveClassName(Name $name) | ||
| { | ||
| // don't resolve special class names | ||
| if (in_array(strtolower($name->toString()), array('self', 'parent', 'static'))) { | ||
| if (!$name->isUnqualified()) { | ||
| $this->errorHandler->handleError(new Error( | ||
| sprintf("'\\%s' is an invalid class name", $name->toString()), | ||
| $name->getAttributes() | ||
| )); | ||
| } | ||
|
|
||
| return $name; | ||
| } | ||
|
|
||
| // fully qualified names are already resolved | ||
| if ($name->isFullyQualified()) { | ||
| return $name; | ||
| } | ||
|
|
||
| $aliasName = strtolower($name->getFirst()); | ||
| if (!$name->isRelative() && isset($this->aliases[Stmt\Use_::TYPE_NORMAL][$aliasName])) { | ||
| // resolve aliases (for non-relative names) | ||
| $alias = $this->aliases[Stmt\Use_::TYPE_NORMAL][$aliasName]; | ||
| return FullyQualified::concat($alias, $name->slice(1), $name->getAttributes()); | ||
| } | ||
|
|
||
| // if no alias exists prepend current namespace | ||
| return FullyQualified::concat($this->namespace, $name, $name->getAttributes()); | ||
| } | ||
|
|
||
| protected function resolveOtherName(Name $name, $type) | ||
| { | ||
| // fully qualified names are already resolved | ||
| if ($name->isFullyQualified()) { | ||
| return $name; | ||
| } | ||
|
|
||
| // resolve aliases for qualified names | ||
| $aliasName = strtolower($name->getFirst()); | ||
| if ($name->isQualified() && isset($this->aliases[Stmt\Use_::TYPE_NORMAL][$aliasName])) { | ||
| $alias = $this->aliases[Stmt\Use_::TYPE_NORMAL][$aliasName]; | ||
| return FullyQualified::concat($alias, $name->slice(1), $name->getAttributes()); | ||
| } | ||
|
|
||
| if ($name->isUnqualified()) { | ||
| if ($type === Stmt\Use_::TYPE_CONSTANT) { | ||
| // constant aliases are case-sensitive, function aliases case-insensitive | ||
| $aliasName = $name->getFirst(); | ||
| } | ||
|
|
||
| if (isset($this->aliases[$type][$aliasName])) { | ||
| // resolve unqualified aliases | ||
| return new FullyQualified($this->aliases[$type][$aliasName], $name->getAttributes()); | ||
| } | ||
|
|
||
| if (null === $this->namespace) { | ||
| // outside of a namespace unaliased unqualified is same as fully qualified | ||
| return new FullyQualified($name, $name->getAttributes()); | ||
| } | ||
|
|
||
| // unqualified names inside a namespace cannot be resolved at compile-time | ||
| // add the namespaced version of the name as an attribute | ||
| $name->setAttribute( | ||
| 'namespacedName', | ||
| FullyQualified::concat($this->namespace, $name, $name->getAttributes()) | ||
| ); | ||
|
|
||
| return $name; | ||
| } | ||
|
|
||
| // if no alias exists prepend current namespace | ||
| return FullyQualified::concat($this->namespace, $name, $name->getAttributes()); | ||
| } | ||
|
|
||
| protected function addNamespacedName(Node $node) | ||
| { | ||
| $node->namespacedName = Name::concat($this->namespace, $node->name); | ||
| $node->namespace = $this->namespace; | ||
| } | ||
| } |
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