class Herb::Errors::TagNamesMismatchError

def initialize(type, location, message, opening_tag, closing_tag)
  super(type, location, message)
  @opening_tag = opening_tag
  @closing_tag = closing_tag
end

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

def to_hash
  super.merge({
    opening_tag: opening_tag,
    closing_tag: closing_tag,
  })
end

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