diff --git a/src/ComposerScripts.php b/src/ComposerScripts.php
index 487c39d..6cae6d7 100644
--- a/src/ComposerScripts.php
+++ b/src/ComposerScripts.php
@@ -45,7 +45,7 @@ class ComposerScripts
             }
 
             $uris = yield $finder->find("$stubsLocation/**/*.php");
-
+            $uris = [];
             foreach ($uris as $uri) {
                 echo "Parsing $uri\n";
                 $content = yield $contentRetriever->retrieve($uri);
diff --git a/src/DefinitionResolver.php b/src/DefinitionResolver.php
index 51c5955..50aac33 100644
--- a/src/DefinitionResolver.php
+++ b/src/DefinitionResolver.php
@@ -34,6 +34,16 @@ class DefinitionResolver
      */
     private $docBlockFactory;
 
+
+    public $autoloadInfo;
+
+    // The followings are autoloading properties.
+    public $autoloadLibraries;
+    public $autoloadClasses;
+    public $autoloadModels;
+    public $autoloadLanguages;
+
+
     /**
      * @param ReadableIndex $index
      */
@@ -679,6 +689,29 @@ class DefinitionResolver
                                 return new Types\Object_(new Fqsen('\\' . $classFqn));
                             }
                             return $def->type;
+                $memberSuffix = '->' . $expr->name;
+                if ($expr instanceof Node\Expr\MethodCall) {
+                    $memberSuffix .= '()';
+                }
+
+                // Find the right class that implements the member
+                $implementorFqns = [$classFqn];
+                while ($implementorFqn = array_shift($implementorFqns)) {
+                    // If the member FQN exists, return it
+                    $def = $this->index->getDefinition($implementorFqn . $memberSuffix);
+                    if ($def) {
+                        return $def->type;
+                    }
+                    // Get Definition of implementor class
+                    $implementorDef = $this->index->getDefinition($implementorFqn);
+                    // If it doesn't exist, return the initial guess
+                    if ($implementorDef === null) {
+                        break;
+                    }
+                    // Repeat for parent class
+                    if ($implementorDef->extends) {
+                        foreach ($implementorDef->extends as $extends) {
+                            $implementorFqns[] = $extends;
                         }
                     }
                 }
diff --git a/src/Indexer.php b/src/Indexer.php
index 9f8749d..0a55b86 100644
--- a/src/Indexer.php
+++ b/src/Indexer.php
@@ -118,6 +118,18 @@ class Indexer
             /** @var string[][] */
             $deps = [];
 
+            $ending = "application/config/autoload.php";
+            $endingLength = strlen($ending);
+            foreach ($uris as $uri) {
+              $found = (substr($uri, -$endingLength) === $ending);
+
+              // if found, put it to the beginning of the list so that it gets analyzed first.
+              if ($found) {
+                array_unshift($uris, $uri); 
+                break;
+              }
+            }
+
             foreach ($uris as $uri) {
                 $packageName = getPackageName($uri, $this->composerJson);
                 if ($this->composerLock !== null && $packageName) {
diff --git a/src/LanguageServer.php b/src/LanguageServer.php
index 118dd93..a0a8168 100644
--- a/src/LanguageServer.php
+++ b/src/LanguageServer.php
@@ -232,7 +232,7 @@ class LanguageServer extends AdvancedJsonRpc\Dispatcher
                     $this->composerLock,
                     $this->composerJson
                 );
-                $indexer->index()->otherwise('\\LanguageServer\\crash');
+                yield $indexer->index()->otherwise('\\LanguageServer\\crash');
             }
 
 
diff --git a/src/NodeVisitor/DynamicLoader.php b/src/NodeVisitor/DynamicLoader.php
new file mode 100644
index 0000000..7f83500
--- /dev/null
+++ b/src/NodeVisitor/DynamicLoader.php
@@ -0,0 +1,301 @@
+<?php
+declare(strict_types = 1);
+
+namespace LanguageServer\NodeVisitor;
+
+use PhpParser\PrettyPrinter\Standard as PrettyPrinter;
+use PhpParser\{NodeVisitorAbstract, Node};
+use phpDocumentor\Reflection\{Types, Type, Fqsen, TypeResolver};
+
+use LanguageServer\{Definition, DefinitionResolver};
+use LanguageServer\Protocol\{SymbolInformation, SymbolKind, Location};
+
+/**
+ * Collects definitions created dynamically by framework such as CodeIgniter
+ */
+class DynamicLoader extends NodeVisitorAbstract
+{
+    public $definitionCollector;
+    public $prettyPrinter;
+    public $definitionResolver;
+    
+    private $collectAutoload;
+
+    public function __construct(DefinitionCollector $definitionCollector, DefinitionResolver $definitionResolver, bool $collectAutoload)
+    {
+        $this->definitionCollector = $definitionCollector;
+        $this->definitionResolver = $definitionResolver;
+        $this->collectAutoload = $collectAutoload;
+        $this->prettyPrinter = new PrettyPrinter;
+    }
+
+    public function visitAutoloadClassDeclaration(Node $node) {
+      if (!($node instanceof Node\Stmt\Class_)) {
+        return;
+      }
+
+      $extends = $node->extends;
+      if (!isset($extends->parts)) {
+          return;
+      }
+      $shouldAutoload = false;
+      foreach ($extends->parts as $part) {
+        // TODO: add more criteria here?
+        if ($part === "CI_Controller" || $part === "ST_Controller" ||
+            $part === "ST_Auth_Controller") {
+          $shouldAutoload = true;
+          break;
+        }
+      }
+
+      if (!$shouldAutoload) {
+        return;
+      }
+
+      if (isset($this->definitionResolver->autoloadLibraries)) {
+        foreach ($this->definitionResolver->autoloadLibraries as $key => $value) {
+          $this->createAutoloadDefinition($node, $value);
+        }
+      }
+
+      if (isset($this->definitionResolver->autoloadModels)) {
+        foreach ($this->definitionResolver->autoloadModels as $key => $value) {
+          $this->createAutoloadDefinition($node, $value);
+        }
+      }
+
+      if (isset($this->definitionResolver->autoloadHelpers)) {
+        foreach ($this->definitionResolver->autoloadHelpers as $key => $value) {
+          $this->createAutoloadDefinition($node, $value);
+        }
+      }
+
+      if (isset($this->definitionResolver->autoloadConfig)) {
+        foreach ($this->definitionResolver->autoloadConfig as $key => $value) {
+          $this->createAutoloadDefinition($node, $value);
+        }
+      }
+
+      if (isset($this->definitionResolver->autoloadLanguage)) {
+        foreach ($this->definitionResolver->autoloadLanguage as $key => $value) {
+          $this->createAutoloadDefinition($node, $value);
+        }
+      }
+    }
+
+    public function visitAutoloadNode(Node $node) {
+      // looking at array assignments.
+      if (!($node instanceof Node\Expr\Assign)) {
+        return;
+      }
+
+      // check left hand side.
+      $lhs = $node->var;
+      if (!($lhs instanceof Node\Expr\ArrayDimFetch)) {
+        return;
+      }
+
+      $dimFetchVar = $lhs->var;
+      if (!($dimFetchVar instanceof Node\Expr\Variable)) {
+        return;
+      }
+
+      if ($dimFetchVar->name !== "autoload") {
+        return;
+      }
+      // end of checking left hand side.
+
+      $dim = $lhs->dim;
+      if (!($dim instanceof Node\Scalar\String_)) {
+        return;
+      }
+      // TODO: support more than libraries
+      $target = $dim->value;
+
+      // extract right hand side.
+      $rhs = $node->expr;
+      if (!($rhs instanceof Node\Expr\Array_)) {
+        return;
+      }
+    
+      // $target -> $node reference
+      $arrayOfLibs = $rhs->items;
+      foreach ($arrayOfLibs as $lib) {
+        $libName = $lib->value->value;
+        switch ($target) {
+          case "libraries":
+            $this->definitionResolver->autoloadLibraries[$libName] = $lib;
+            break;
+          case "helper":
+            $this->definitionResolver->autoloadHelpers[$libName] = $lib;
+            break;
+          case "config":
+            $this->definitionResolver->autoloadConfig[$libName] = $lib;
+            break;
+          case "model":
+            $this->definitionResolver->autoloadModels[$libName] = $lib;
+            break;
+          case "language":
+            $this->definitionResolver->autoloadLanguage[$libName] = $lib;
+            break;
+        }
+      }
+
+    }
+
+    public function enterNode(Node $node)
+    {
+        // handling autoloading.
+        if ($this->collectAutoload) {
+          // records autoloading fields into definition resolver.
+          $this->visitAutoloadNode($node);
+        }
+
+        // spits autoloading fields to a class that is derived from controller classes.
+        $this->visitAutoloadClassDeclaration($node);
+
+        // The follwoing is for handling dynamic loading. (Finished)
+
+        // check its name is 'model', 'library' or 'helper'.
+        if (!($node instanceof Node\Expr\MethodCall)) {
+            return;
+        }
+
+        if ($node->name !== 'model' && $node->name !== 'library' &&  $node->name !== 'helper') {
+            return;
+        }
+
+        // check its caller is a 'load'
+        if (!isset($node->var) || !isset($node->var->name) || $node->var->name !== 'load') {
+            return;
+        }
+
+        $argSize = count($node->args);
+        if ($argSize == 0 || $argSize == 3) { // when argSize = 3 it's loading from db
+            return;
+        }
+
+        $nameNode = NULL;
+        if ($node->args[0]->value instanceof Node\Scalar\String_) {
+            // make sure the first argument is a string.
+
+            if ($argSize == 2) {
+                $nameNode = $node->args[1]->value;
+            }
+            $this->createDefinition($node, $node->args[0]->value, $nameNode);
+        } else if ($node->args[0]->value instanceof Node\Expr\Array_) {
+            $elems = $node->args[0]->value->items;
+            foreach ($elems as $item) {
+                if ($item->value instanceof Node\Scalar\String_) {
+                    $this->createDefinition($node, $item->value, $nameNode);
+                }
+            }
+        }
+    }
+
+    // copied from createDefinition and tailored.
+    public function createAutoloadDefinition(Node $classNode, Node $entityNode)
+    {
+        $fieldName = $entityNode->value->value;
+
+        $enclosedClass = $classNode;
+        $classFqn = $enclosedClass->namespacedName->toString();
+        $fqn = $classFqn . "->" . $fieldName;
+
+        // if we cannot find definition, just return.
+        if ($fqn === NULL) {
+            return;
+        }
+
+        // add fqn to nodes and definitions.
+        $this->definitionCollector->nodes[$fqn] = $entityNode;
+
+        // Create symbol
+//        $classFqnParts = preg_split('/(::|->|\\\\)/', $fqn);
+//        array_pop($classFqnParts);
+//        $classFqn = implode('\\', $classFqnParts);
+        $sym = new SymbolInformation($fieldName, SymbolKind::PROPERTY, Location::fromNode($entityNode), $classFqn);
+
+        // Create type
+        // array_push($entityParts, ucwords($enityName));
+        // $typeName = implode('\\', $entityParts);
+        $typeName = ucwords($fieldName);
+        $type = new Types\Object_(new Fqsen('\\' . $typeName));
+
+        // Create defintion from symbol, type and all others
+        $def = new Definition;
+        $def->canBeInstantiated = false;
+        $def->isGlobal = false; // TODO check the meaning of this, why public field has this set to false?
+        $def->isStatic = false; // it should not be a static field
+        $def->fqn = $fqn;
+        $def->symbolInformation = $sym;
+        $def->type = $type;
+        // Maybe this is not the best
+        $def->declarationLine = $fieldName; // $this->prettyPrinter->prettyPrint([$argNode]);
+        $def->documentation = "Dynamically Generated Field: " . $fieldName;
+
+        $this->definitionCollector->definitions[$fqn] = $def;
+    }
+
+    public function createDefinition($callNode, $entityNode, $nameNode)
+    {
+        $entityString = $entityNode->value;
+        $entityParts = explode('/', $entityString);
+        $enityName = array_pop($entityParts);
+        $fieldName = $enityName;
+
+        // deal with case like:   $this->_CI->load->model('users_mdl', 'hahaha');
+        if ($callNode->name = "model" && $nameNode !== NULL) {
+            if (!($nameNode instanceof Node\Scalar\String_)) {
+                return;
+            }
+            $fieldName = $nameNode->value;
+        }
+
+        $enclosedClass = $callNode;
+        $fqn = NULL;
+        $classFqn = NULL;
+        while ($enclosedClass !== NULL) {
+            $enclosedClass = $enclosedClass->getAttribute('parentNode');
+            if ($enclosedClass instanceof Node\Stmt\ClassLike && isset($enclosedClass->name)) {
+                $classFqn = $enclosedClass->namespacedName->toString();
+                $fqn = $classFqn . '->' . $fieldName;
+                break;
+            }
+        }
+
+        // if we cannot find definition, just return.
+        if ($fqn === NULL) {
+            return;
+        }
+
+        // add fqn to nodes and definitions.
+        $this->definitionCollector->nodes[$fqn] = $entityNode;
+
+        // Create symbol
+//        $classFqnParts = preg_split('/(::|->|\\\\)/', $fqn);
+//        array_pop($classFqnParts);
+//        $classFqn = implode('\\', $classFqnParts);
+        $sym = new SymbolInformation($fieldName, SymbolKind::PROPERTY, Location::fromNode($entityNode), $classFqn);
+
+        // Create type
+        // array_push($entityParts, ucwords($enityName));
+        // $typeName = implode('\\', $entityParts);
+        $typeName = ucwords($enityName);
+        $type = new Types\Object_(new Fqsen('\\' . $typeName));
+
+        // Create defintion from symbol, type and all others
+        $def = new Definition;
+        $def->canBeInstantiated = false;
+        $def->isGlobal = false; // TODO check the meaning of this, why public field has this set to false?
+        $def->isStatic = false; // it should not be a static field
+        $def->fqn = $fqn;
+        $def->symbolInformation = $sym;
+        $def->type = $type;
+        // Maybe this is not the best
+        $def->declarationLine = $fieldName; // $this->prettyPrinter->prettyPrint([$argNode]);
+        $def->documentation = "Dynamically Generated Field: " . $fieldName;
+
+        $this->definitionCollector->definitions[$fqn] = $def;
+    }
+}
diff --git a/src/PhpDocument.php b/src/PhpDocument.php
index ff3cf8b..08c6865 100644
--- a/src/PhpDocument.php
+++ b/src/PhpDocument.php
@@ -3,6 +3,16 @@ declare(strict_types = 1);
 
 namespace LanguageServer;
 
+use LanguageServer\Protocol\{Diagnostic, DiagnosticSeverity, Range, Position, TextEdit};
+use LanguageServer\NodeVisitor\{
+    NodeAtPositionFinder,
+    ReferencesAdder,
+    DocBlockParser,
+    DefinitionCollector,
+    ColumnCalculator,
+    ReferencesCollector,
+    DynamicLoader
+};
 use LanguageServer\Index\Index;
 use LanguageServer\Protocol\{
     Diagnostic, Position, Range
@@ -105,6 +115,10 @@ class PhpDocument
         $this->updateContent($content);
     }
 
+		private function isVisitingAutoload() {
+			return false;
+		}
+
     /**
      * Get all references of a fully qualified name
      *
@@ -146,12 +160,45 @@ class PhpDocument
 
         $treeAnalyzer = new TreeAnalyzer($this->parser, $content, $this->docBlockFactory, $this->definitionResolver, $this->uri);
 
-        $this->diagnostics = $treeAnalyzer->getDiagnostics();
+        $this->diagnostics = [];
+        foreach ($errorHandler->getErrors() as $error) {
+            $this->diagnostics[] = Diagnostic::fromError($error, $this->content, DiagnosticSeverity::ERROR, 'php');
+        }
+
+				// figure out if it is analyzing an autoload file.
+				$isAutoload = false;
+				$ending = "application/config/autoload.php";
+				$endingLength = strlen($ending);
+				$isAutoload = (substr($this->uri, -$endingLength) === $ending);
+
+        // $stmts can be null in case of a fatal parsing error
+        if ($stmts) {
+            $traverser = new NodeTraverser;
+
+            // Resolve aliased names to FQNs
+            $traverser->addVisitor(new NameResolver($errorHandler));
 
         $this->definitions = $treeAnalyzer->getDefinitions();
 
         $this->definitionNodes = $treeAnalyzer->getDefinitionNodes();
 
+        // Report errors from parsing docblocks
+        foreach ($docBlockParser->errors as $error) {
+            $this->diagnostics[] = Diagnostic::fromError($error, $this->content, DiagnosticSeverity::WARNING, 'php');
+        }
+
+        $traverser = new NodeTraverser;
+
+        // Collect all definitions
+        $definitionCollector = new DefinitionCollector($this->definitionResolver);
+        $traverser->addVisitor($definitionCollector);
+
+        $traverser->addVisitor(new DynamicLoader($definitionCollector, $this->definitionResolver, $isAutoload));
+
+        // Collect all references
+        $referencesCollector = new ReferencesCollector($this->definitionResolver);
+        //$traverser->addVisitor($referencesCollector);
+
         $this->referenceNodes = $treeAnalyzer->getReferenceNodes();
 
         foreach ($this->definitions as $fqn => $definition) {
diff --git a/src/PhpDocumentLoader.php b/src/PhpDocumentLoader.php
index 57a7e9c..9d7b642 100644
--- a/src/PhpDocumentLoader.php
+++ b/src/PhpDocumentLoader.php
@@ -20,7 +20,7 @@ class PhpDocumentLoader
      *
      * @var PhpDocument
      */
-    private $documents = [];
+    public $documents = [];
 
     /**
      * @var ContentRetriever
@@ -110,7 +110,7 @@ class PhpDocumentLoader
             $content = yield $this->contentRetriever->retrieve($uri);
             $size = strlen($content);
             if ($size > $limit) {
-                throw new ContentTooLargeException($uri, $size, $limit);
+                return $this->create($uri, "");
             }
 
             if (isset($this->documents[$uri])) {
diff --git a/src/Server/TextDocument.php b/src/Server/TextDocument.php
index 5a2819e..ff3646f 100644
--- a/src/Server/TextDocument.php
+++ b/src/Server/TextDocument.php
@@ -261,7 +261,15 @@ class TextDocument
     public function definition(TextDocumentIdentifier $textDocument, Position $position): Promise
     {
         return coroutine(function () use ($textDocument, $position) {
-            $document = yield $this->documentLoader->getOrLoad($textDocument->uri);
+            $documentLoader = $this->documentLoader;//->getOrLoad($textDocument->uri);
+            $document = null;
+            if (isset($documentLoader->documents[$textDocument->uri])) {
+              $document = $documentLoader->documents[$textDocument->uri];
+            } else {
+              $document = yield $documentLoader->load($textDocument->uri);
+              $documentLoader->documents[$textDocument->uri] = $document; 
+            }
+
             $node = $document->getNodeAtPosition($position);
             if ($node === null) {
                 return [];