1 files changed, 15 insertions, 8 deletions
diff --git a/grammer.cpp b/grammer.cpp
index 4bdf8f4..8f2b42b 100644
--- a/grammer.cpp
+++ b/grammer.cpp
@@ -22,7 +22,8 @@ bool Compiler::IsRootNode(index_t node_id) const
  return node.parent_node_id == node.node_id;
 }
 
-void Compiler::Validate() const {
+void Compiler::Validate() const
+{
  // A program is non empty
  if (nodes.size() == 0)
   throw std::runtime_error("");
@@ -50,11 +51,13 @@ void Compiler::DumpTree()
  }
 }
 
-bool RootIsStartSymbol()
+bool Compiler::RootIsStartSymbol() const
 {
  return GetTypeOfNode(root_node_id) == Top;
 }
 
+namespace {
+
 bool ChildIdIsToken(int32_t child_id)
 {
  return child_i < 0;
@@ -70,12 +73,14 @@ int32_t ChildIdFromTokenId(index_t token_id)
  return -1 - int32_t(token_id);
 }
 
-bool AllTokensUsed()
+} // namespace
+
+bool Compiler::AllTokensUsed() const
 {
  return tokens_used == tokens.size();
 }
 
-bool Compiler::treeIsComplete()
+bool Compiler::treeIsComplete() const
 {
  return RootIsStartSymbol() && AllTokensUsed();
 }
@@ -199,7 +204,7 @@ bool Compiler::AddRootNode()
  return true;
 }
 
-void RemoveLastNode()
+void Compiler::RemoveLastNode()
 {
  TreeNode& node {nodes.back()};
  index_t node_id = node.node_id;
@@ -225,7 +230,7 @@ void RemoveLastNode()
 }
 
 // Change type of last node according to alternatives
-void ChangeNodeType()
+void Compiler::ChangeNodeType()
 {
  TreeNode& node {nodes.back()};
  index_t node_id = node.node_id;
@@ -289,7 +294,8 @@ std::map<std::string, std::string> Compiler::traverse(lower, upper)
 
 // returns list from lower (excluding) to upper (including)
 // returns empty list on fail
-std::vector<std::string> Compiler::GetPath(std::string upper, std::string lower) {
+std::vector<std::string> Compiler::GetPath(std::string upper, std::string lower)
+{
  std::vector<std::string> result;
 
  // traverse bnf from lower to upper
@@ -327,7 +333,8 @@ index_t Compiler::AddNode(const std::string& name, const std::string& child_type
  return index;
 }
 
-void Compiler::AddPath(const std::vector<std::string>& path, index_t current_index) {
+void Compiler::AddPath(const std::vector<std::string>& path, index_t current_index)
+{
  for (int i = path.size() - 1; i > 0; i--) {
   std::string child_name = path[i - 1];
   current_index = AddNode(path[i], child_name, current_index);