class Herb::Errors::UnexpectedTokenError

def initialize(type, location, message, expected_type, found)
  super(type, location, message)
  @expected_type = expected_type
  @found = found
end

def inspect
  tree_inspect.rstrip.gsub(/\s+$/, "")
end

def to_hash
  super.merge({
    expected_type: expected_type,
    found: found,
  })
end

def tree_inspect(indent = 0)
  output = +""
  output += %(@ #{error_name} #{location.tree_inspect}\n)
  output += %(├── message: #{message.inspect}\n)
  output += %(├── expected_type: #{expected_type.inspect}\n)
  output += %(└── found: #{found ? found.tree_inspect : "∅"}\n)
  output += %(\n)
  output.gsub(/^/, "    " * indent)
end