Fix workspace/xreferences (#424)

* Make Descriptors minimal

SymbolDescriptor and PackageDescriptor should only contain the minumum amount of properties needed

* Add missing use

* Fixes

* Ignore ReferenceInformation->symbol

src/Protocol/PackageDescriptor.php

@@ -0,0 +1,25 @@
+<?php
+declare(strict_types = 1);
+
+namespace LanguageServer\Protocol;
+
+/**
+ * Uniquely identifies a Composer package
+ */
+class PackageDescriptor
+{
+    /**
+     * The package name
+     *
+     * @var string
+     */
+    public $name;
+
+    /**
+     * @param string $name The package name
+     */
+    public function __construct(string $name = null)
+    {
+        $this->name = $name;
+    }
+}

src/Protocol/SymbolDescriptor.php

@@ -3,7 +3,10 @@ declare(strict_types = 1);
 
 namespace LanguageServer\Protocol;
 
-class SymbolDescriptor extends SymbolInformation
+/**
+ * Uniquely identifies a symbol
+ */
+class SymbolDescriptor
 {
     /**
      * The fully qualified structural element name, a globally unique identifier for the symbol.
@@ -13,19 +16,17 @@ class SymbolDescriptor extends SymbolInformation
     public $fqsen;
 
     /**
-     * A package from the composer.lock file or the contents of the composer.json
-     * Example: https://github.com/composer/composer/blob/master/composer.lock#L10
-     * Available fields may differ
+     * Identifies the Composer package the symbol is defined in (if any)
      *
-     * @var object|null
+     * @var PackageDescriptor|null
      */
     public $package;
 
     /**
-     * @param string $fqsen   The fully qualified structural element name, a globally unique identifier for the symbol.
-     * @param object $package A package from the composer.lock file or the contents of the composer.json
+     * @param string $fqsen              The fully qualified structural element name, a globally unique identifier for the symbol.
+     * @param PackageDescriptor $package Identifies the Composer package the symbol is defined in
      */
-    public function __construct(string $fqsen = null, $package = null)
+    public function __construct(string $fqsen = null, PackageDescriptor $package = null)
     {
         $this->fqsen = $fqsen;
         $this->package = $package;

src/Server/TextDocument.php

@@ -8,14 +8,26 @@ use LanguageServer\{
 };
 use LanguageServer\Index\ReadableIndex;
 use LanguageServer\Protocol\{
-    FormattingOptions, Hover, Location, MarkedString, Position, Range, ReferenceContext, SymbolDescriptor, SymbolLocationInformation, TextDocumentIdentifier, TextDocumentItem, VersionedTextDocumentIdentifier
+    FormattingOptions,
+    Hover,
+    Location,
+    MarkedString,
+    Position,
+    Range,
+    ReferenceContext,
+    SymbolDescriptor,
+    PackageDescriptor,
+    SymbolLocationInformation,
+    TextDocumentIdentifier,
+    TextDocumentItem,
+    VersionedTextDocumentIdentifier
 };
 use Microsoft\PhpParser;
 use Microsoft\PhpParser\Node;
 use Sabre\Event\Promise;
 use Sabre\Uri;
 use function LanguageServer\{
-    isVendored, waitForEvent
+    isVendored, waitForEvent, getPackageName
 };
 use function Sabre\Event\coroutine;
 
@@ -389,25 +401,14 @@ class TextDocument
             ) {
                 return [];
             }
-            $symbol = new SymbolDescriptor;
-            foreach (get_object_vars($def->symbolInformation) as $prop => $val) {
-                $symbol->$prop = $val;
-            }
-            $symbol->fqsen = $def->fqn;
+            // if Definition is inside a dependency, use the package name
             $packageName = getPackageName($def->symbolInformation->location->uri, $this->composerJson);
-            if ($packageName && $this->composerLock !== null) {
-                // Definition is inside a dependency
-                foreach (array_merge($this->composerLock->packages, $this->composerLock->{'packages-dev'}) as $package) {
-                    if ($package->name === $packageName) {
-                        $symbol->package = $package;
-                        break;
-                    }
-                }
-            } else if ($this->composerJson !== null) {
-                // Definition belongs to a root package
-                $symbol->package = $this->composerJson;
+            // else use the package name of the root package (if exists)
+            if (!$packageName && $this->composerJson !== null) {
+                $packageName = $this->composerJson->name;
             }
-            return [new SymbolLocationInformation($symbol, $symbol->location)];
+            $descriptor = new SymbolDescriptor($def->fqn, new PackageDescriptor($packageName));
+            return [new SymbolLocationInformation($descriptor, $def->symbolInformation->location)];
         });
     }
 }

src/Server/Workspace.php

@@ -10,13 +10,15 @@ use LanguageServer\Protocol\{
     FileEvent,
     SymbolInformation,
     SymbolDescriptor,
+    PackageDescriptor,
     ReferenceInformation,
     DependencyReference,
-    Location
+    Location,
+    MessageType
 };
 use Sabre\Event\Promise;
 use function Sabre\Event\coroutine;
-use function LanguageServer\{waitForEvent, getPackageName};
+use function LanguageServer\waitForEvent;
 
 /**
  * Provides method handlers for all workspace/* methods
@@ -146,38 +148,11 @@ class Workspace
             $refInfos = [];
             foreach ($refs as $uri => $fqns) {
                 foreach ($fqns as $fqn) {
-                    $def = $this->dependenciesIndex->getDefinition($fqn);
-                    $symbol = new SymbolDescriptor;
-                    $symbol->fqsen = $fqn;
-                    foreach (get_object_vars($def->symbolInformation) as $prop => $val) {
-                        $symbol->$prop = $val;
-                    }
-                    // Find out package name
-                    $packageName = getPackageName($def->symbolInformation->location->uri, $this->composerJson);
-                    foreach (array_merge($this->composerLock->packages, $this->composerLock->{'packages-dev'}) as $package) {
-                        if ($package->name === $packageName) {
-                            $symbol->package = $package;
-                            break;
-                        }
-                    }
-                    // If there was no FQSEN provided, check if query attributes match
-                    if (!isset($query->fqsen)) {
-                        $matches = true;
-                        foreach (get_object_vars($query) as $prop => $val) {
-                            if ($query->$prop != $symbol->$prop) {
-                                $matches = false;
-                                break;
-                            }
-                        }
-                        if (!$matches) {
-                            continue;
-                        }
-                    }
                     $doc = yield $this->documentLoader->getOrLoad($uri);
                     foreach ($doc->getReferenceNodesByFqn($fqn) as $node) {
                         $refInfo = new ReferenceInformation;
                         $refInfo->reference = Location::fromNode($node);
-                        $refInfo->symbol = $symbol;
+                        $refInfo->symbol = $query;
                         $refInfos[] = $refInfo;
                     }
                 }