From a8028a62ecaf642bb2cff06f7533dcd31e843fb5 Mon Sep 17 00:00:00 2001
From: Ganesh Viswanathan <dev@genotrance.com>
Date: Mon, 21 Jan 2019 12:37:51 -0600
Subject: Fix #55 - crash and no typedef name

---
 nimterop/ast.nim     | 9 +++++++--
 nimterop/grammar.nim | 2 +-
 toast.nim            | 4 ++--
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/nimterop/ast.nim b/nimterop/ast.nim
index 62cf05e..c5810b3 100644
--- a/nimterop/ast.nim
+++ b/nimterop/ast.nim
@@ -88,9 +88,10 @@ proc searchAst(root: TSNode) =
   var
     node = root
     nextnode: TSNode
+    depth = 0
 
   while true:
-    if not node.tsNodeIsNull():
+    if not node.tsNodeIsNull() and depth > -1:
       let
         name = $node.tsNodeType()
       if name in gStateRT.ast:
@@ -102,16 +103,20 @@ proc searchAst(root: TSNode) =
             break
         gStateRT.data = @[]
     else:
-      return
+      break
 
     if $node.tsNodeType() notin gStateRT.ast and node.tsNodeNamedChildCount() != 0:
       nextnode = node.tsNodeNamedChild(0)
+      depth += 1
     else:
       nextnode = node.tsNodeNextNamedSibling()
 
     if nextnode.tsNodeIsNull():
       while true:
         node = node.tsNodeParent()
+        depth -= 1
+        if depth == -1:
+          break
         if node == root:
           break
         if not node.tsNodeNextNamedSibling().tsNodeIsNull():
diff --git a/nimterop/grammar.nim b/nimterop/grammar.nim
index 6d5870a..979b9f4 100644
--- a/nimterop/grammar.nim
+++ b/nimterop/grammar.nim
@@ -249,7 +249,7 @@ proc initGrammar() =
           i += 1
 
       if node.tsNodeType() == "type_definition" and
-        gStateRT.data[^1].name == "type_identifier":
+        gStateRT.data[^1].name == "type_identifier" and gStateRT.data[^1].val.len != 0:
           let
             dname = gStateRT.data[^1].val
             ndname = gStateRT.data[^1].val.getIdentifier()
diff --git a/toast.nim b/toast.nim
index 7781369..c6bc92d 100644
--- a/toast.nim
+++ b/toast.nim
@@ -11,14 +11,14 @@ proc printLisp(root: TSNode) =
     depth = 0
 
   while true:
-    if not node.tsNodeIsNull():
+    if not node.tsNodeIsNull() and depth > -1:
       if gStateRT.pretty:
         stdout.write spaces(depth)
       let
         (line, col) = node.getLineCol()
       stdout.write &"({$node.tsNodeType()} {line} {col} {node.tsNodeEndByte() - node.tsNodeStartByte()}"
     else:
-      return
+      break
 
     if node.tsNodeNamedChildCount() != 0:
       if gStateRT.pretty:
-- 
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