Method: Hocon::Impl::ConfigNodeObject#change_value_on_path

Defined in:
lib/hocon/impl/config_node_object.rb

#change_value_on_path(desired_path, value, flavor) ⇒ Object 



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# File 'lib/hocon/impl/config_node_object.rb', line 41

def change_value_on_path(desired_path, value, flavor)
  children_copy = @children.clone
  seen_non_matching = false
  # Copy the value so we can change it to null but not modify the original parameter
  value_copy = value
  i = children_copy.size
  while i >= 0 do
    if children_copy[i].is_a?(Hocon::Impl::ConfigNodeSingleToken)
      t = children_copy[i].token
      # Ensure that, when we are removing settings in JSON, we don't end up with a trailing comma
      if flavor.equal?(ConfigSyntax::JSON) && !seen_non_matching && t.equal?(Tokens::COMMA)
        children_copy.delete_at(i)
      end
      i -= 1
      next
    elsif !children_copy[i].is_a?(Hocon::Impl::ConfigNodeField)
      i -= 1
      next
    end
    node = children_copy[i]
    key = node.path.value

    # Delete all multi-element paths that start with the desired path, since technically they are duplicates
    if (value_copy.nil? && key == desired_path) || (key.starts_with(desired_path) && !(key == desired_path))
      children_copy.delete_at(i)
      # Remove any whitespace or commas after the deleted setting
      j = i
      while j < children_copy.size
        if children_copy[j].is_a?(Hocon::Impl::ConfigNodeSingleToken)
          t = children_copy[j].token
          if Tokens.ignored_whitespace?(t) || t.equal?(Tokens::COMMA)
            children_copy.delete_at(j)
            j -= 1
          else
            break
          end
        else
          break
        end
        j += 1
      end
    elsif key == desired_path
      seen_non_matching = true
      before = i - 1 > 0 ? children_copy[i - 1] : nil
      if value.is_a?(Hocon::Impl::ConfigNodeComplexValue) && before.is_a?(Hocon::Impl::ConfigNodeSingleToken) &&
          Tokens.ignored_whitespace?(before.token)
        indented_value = value.indent_text(before)
      else
        indented_value = value
      end
      children_copy[i] = node.replace_value(indented_value)
      value_copy = nil
    elsif desired_path.starts_with(key)
      seen_non_matching = true
      if node.value.is_a?(self.class)
        remaining_path = desired_path.sub_path_to_end(key.length)
        children_copy[i] = node.replace_value(node.value.change_value_on_path(remaining_path, value_copy, flavor))
        if !value_copy.nil? && !(node == @children[i])
          value_copy = nil
        end
      end
    else
      seen_non_matching = true
    end
    i -= 1
  end
  self.class.new(children_copy)
end