1220: avoid indexing not existing plugin classes

Author: Vitaliy Boyko

src/com/magento/idea/magento2plugin/stubs/indexes/PluginIndex.java

@@ -19,6 +19,7 @@
 import com.intellij.util.io.DataExternalizer;
 import com.intellij.util.io.EnumeratorStringDescriptor;
 import com.intellij.util.io.KeyDescriptor;
+import com.jetbrains.php.PhpIndex;
 import com.jetbrains.php.lang.PhpLangUtil;
 import com.magento.idea.magento2plugin.magento.files.ModuleDiXml;
 import com.magento.idea.magento2plugin.project.Settings;
@@ -90,6 +91,7 @@ public Map<String, Set<PluginData>> map(final @NotNull FileContent fileContent)
 
             @SuppressWarnings("checkstyle:LineLength")
             private Set<PluginData> getPluginsForType(final XmlTag typeNode) {
+                final PhpIndex phpIndex = PhpIndex.getInstance(typeNode.getProject());
                 final Set<PluginData> results = new HashSet<>();
 
                 for (final XmlTag pluginTag: typeNode.findSubTags(ModuleDiXml.PLUGIN_TAG_NAME)) {
@@ -99,6 +101,11 @@ private Set<PluginData> getPluginsForType(final XmlTag typeNode) {
                     if (pluginType != null) {
                         pluginSortOrder = pluginSortOrder == null ? "0" : pluginSortOrder;
                         final PluginData pluginData = getPluginDataObject(pluginType,  Integer.parseInt(pluginSortOrder));
+                        try {
+                            phpIndex.getAnyByFQN(pluginData.getType());
+                        } catch (Throwable exception) { //NOPMD
+                            //do nothing
+                        }
                         results.add(pluginData);
                     }
                 }