From e7b04f751869e0a4aae7c133f4152d113fbdf0d1 Mon Sep 17 00:00:00 2001
From: Sara Itani <sitani@microsoft.com>
Date: Wed, 1 Mar 2017 16:14:13 -0800
Subject: [PATCH] extract symbol information

---
 src/Protocol/SymbolInformation.php         |  2 +-
 src/Protocol/TolerantSymbolInformation.php | 73 ++++++++++++++++++++++
 src/TolerantDefinitionResolver.php         |  3 +-
 3 files changed, 76 insertions(+), 2 deletions(-)
 create mode 100644 src/Protocol/TolerantSymbolInformation.php

diff --git a/src/Protocol/SymbolInformation.php b/src/Protocol/SymbolInformation.php
index 5d442f0..a608ebd 100644
--- a/src/Protocol/SymbolInformation.php
+++ b/src/Protocol/SymbolInformation.php
@@ -46,7 +46,7 @@ class SymbolInformation
      * @param string $fqn If given, $containerName will be extracted from it
      * @return self|null
      */
-    public static function fromNode(Node $node, string $fqn = null)
+    public static function fromNode($node, string $fqn = null)
     {
         $parent = $node->getAttribute('parentNode');
         $symbol = new self;
diff --git a/src/Protocol/TolerantSymbolInformation.php b/src/Protocol/TolerantSymbolInformation.php
new file mode 100644
index 0000000..df86df1
--- /dev/null
+++ b/src/Protocol/TolerantSymbolInformation.php
@@ -0,0 +1,73 @@
+<?php
+
+namespace LanguageServer\Protocol;
+
+use PhpParser\Node;
+use Microsoft\PhpParser as Tolerant;
+use Exception;
+
+/**
+ * Represents information about programming constructs like variables, classes,
+ * interfaces etc.
+ */
+class TolerantSymbolInformation extends SymbolInformation
+{
+    /**
+     * Converts a Node to a SymbolInformation
+     *
+     * @param Tolerant\Node $node
+     * @param string $fqn If given, $containerName will be extracted from it
+     * @return self|null
+     */
+    public static function fromNode($node, string $fqn = null)
+    {
+        $parent = $node->getAttribute('parentNode');
+        $symbol = new self;
+        if ($node instanceof Node\Stmt\Class_) {
+            $symbol->kind = SymbolKind::CLASS_;
+        } else if ($node instanceof Node\Stmt\Trait_) {
+            $symbol->kind = SymbolKind::CLASS_;
+        } else if ($node instanceof Node\Stmt\Interface_) {
+            $symbol->kind = SymbolKind::INTERFACE;
+        } else if ($node instanceof Node\Name && $parent instanceof Node\Stmt\Namespace_) {
+            $symbol->kind = SymbolKind::NAMESPACE;
+        } else if ($node instanceof Node\Stmt\Function_) {
+            $symbol->kind = SymbolKind::FUNCTION;
+        } else if ($node instanceof Node\Stmt\ClassMethod) {
+            $symbol->kind = SymbolKind::METHOD;
+        } else if ($node instanceof Node\Stmt\PropertyProperty) {
+            $symbol->kind = SymbolKind::PROPERTY;
+        } else if ($node instanceof Node\Const_) {
+            $symbol->kind = SymbolKind::CONSTANT;
+        } else if (
+            (
+                ($node instanceof Node\Expr\Assign || $node instanceof Node\Expr\AssignOp)
+                && $node->var instanceof Node\Expr\Variable
+            )
+            || $node instanceof Node\Expr\ClosureUse
+            || $node instanceof Node\Param
+        ) {
+            $symbol->kind = SymbolKind::VARIABLE;
+        } else {
+            return null;
+        }
+        if ($node instanceof Node\Name) {
+            $symbol->name = (string)$node;
+        } else if ($node instanceof Node\Expr\Assign || $node instanceof Node\Expr\AssignOp) {
+            $symbol->name = $node->var->name;
+        } else if ($node instanceof Node\Expr\ClosureUse) {
+            $symbol->name = $node->var;
+        } else if (isset($node->name)) {
+            $symbol->name = (string)$node->name;
+        } else {
+            return null;
+        }
+        $symbol->location = Location::fromNode($node);
+        if ($fqn !== null) {
+            $parts = preg_split('/(::|->|\\\\)/', $fqn);
+            array_pop($parts);
+            $symbol->containerName = implode('\\', $parts);
+        }
+        return $symbol;
+    }
+}
diff --git a/src/TolerantDefinitionResolver.php b/src/TolerantDefinitionResolver.php
index e09a6ca..65f1f2f 100644
--- a/src/TolerantDefinitionResolver.php
+++ b/src/TolerantDefinitionResolver.php
@@ -3,6 +3,7 @@ declare(strict_types = 1);
 
 namespace LanguageServer;
 
+use LanguageServer\Protocol\TolerantSymbolInformation;
 use PhpParser\Node;
 use PhpParser\PrettyPrinter\Standard as PrettyPrinter;
 use phpDocumentor\Reflection\{Types, Type, Fqsen, TypeResolver};
@@ -128,7 +129,7 @@ class TolerantDefinitionResolver implements DefinitionResolverInterface
                 $def->extends[] = (string)$n;
             }
         }
-        $def->symbolInformation = SymbolInformation::fromNode($node, $fqn);
+        $def->symbolInformation = TolerantSymbolInformation::fromNode($node, $fqn);
         $def->type = $this->getTypeFromNode($node);
         $def->declarationLine = $this->getDeclarationLineFromNode($node);
         $def->documentation = $this->getDocumentationFromNode($node);