Class: Hocon::Impl::ConfigNodeObject

Inherits:
Object
  • Object
show all
Includes:
ConfigNodeComplexValue
Defined in:
lib/hocon/impl/config_node_object.rb

Constant Summary collapse

ConfigSyntax = 
Hocon::ConfigSyntax
Tokens = 
Hocon::Impl::Tokens

Instance Attribute Summary

Attributes included from ConfigNodeComplexValue

#children

Instance Method Summary collapse

Methods included from ConfigNodeComplexValue

#indent_text, #initialize, #tokens

Methods included from AbstractConfigNode

#==, #hash, #render, #tokens

Methods included from Parser::ConfigNode

#render

Instance Method Details

#add_value_on_path(desired_path, value, flavor) ⇒ Object 



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# File 'lib/hocon/impl/config_node_object.rb', line 173

def add_value_on_path(desired_path, value, flavor)
  path = desired_path.value
  children_copy = @children.clone
  indentation = indentation().clone

  # If the value we're inserting is a complex value, we'll need to indent it for insertion
  if value.is_a?(Hocon::Impl::ConfigNodeComplexValue) && indentation.length > 0
    indented_value = value.indent_text(indentation[-1])
  else
    indented_value = value
  end
  same_line = !(indentation.length > 0 && indentation[0].is_a?(Hocon::Impl::ConfigNodeSingleToken) &&
                  Tokens.newline?(indentation[0].token))

  # If the path is of length greater than one, see if the value needs to be added further down
  if path.length > 1
     (0..@children.size - 1).reverse_each do |i|
      unless @children[i].is_a?(Hocon::Impl::ConfigNodeField)
        next
      end
      node = @children[i]
      key = node.path.value
      if path.starts_with(key) && node.value.is_a?(self.class)
        remaining_path = desired_path.sub_path(key.length)
        new_value = node.value
        children_copy[i] = node.replace_value(new_value.add_value_on_path(remaining_path, value, flavor))
        return self.class.new(children_copy)
      end
    end
  end

  # Otherwise, construct the new setting
  starts_with_brace = @children[0].is_a?(Hocon::Impl::ConfigNodeSingleToken) && @children[0].token.equal?(Tokens::OPEN_CURLY)
  new_nodes = []
  new_nodes += indentation
  new_nodes.push(desired_path.first)
  new_nodes.push(Hocon::Impl::ConfigNodeSingleToken.new(Tokens::COLON))
  new_nodes.push(Hocon::Impl::ConfigNodeSingleToken.new(Tokens.new_ignored_whitespace(nil, ' ')))

  if path.length == 1
    new_nodes.push(indented_value)
  else
    # If the path is of length greater than one add the required new objects along the path
    new_object_nodes = []
    new_object_nodes.push(Hocon::Impl::ConfigNodeSingleToken.new(Tokens::OPEN_CURLY))
    if indentation.empty?
      new_object_nodes.push(Hocon::Impl::ConfigNodeSingleToken.new(Tokens.new_line(nil)))
    end
    new_object_nodes += indentation
    new_object_nodes.push(Hocon::Impl::ConfigNodeSingleToken.new(Tokens::CLOSE_CURLY))
    new_object = self.class.new(new_object_nodes)
    new_nodes.push(new_object.add_value_on_path(desired_path.sub_path(1), indented_value, flavor))
  end

  # Combine these two cases so that we only have to iterate once
  if flavor.equal?(ConfigSyntax::JSON) || starts_with_brace || same_line
    i = children_copy.size - 1
    while i >= 0

      # If we are in JSON or are adding a setting on the same line, we need to add a comma to the
      # last setting
      if (flavor.equal?(ConfigSyntax::JSON) || same_line) && children_copy[i].is_a?(Hocon::Impl::ConfigNodeField)
        if i + 1 >= children_copy.size ||
            !(children_copy[i + 1].is_a?(Hocon::Impl::ConfigNodeSingleToken) && children_copy[i + 1].token.equal?(Tokens::COMMA))
          children_copy.insert(i + 1, Hocon::Impl::ConfigNodeSingleToken.new(Tokens::COMMA))
          break
        end
      end

      # Add the value into the copy of the children map, keeping any whitespace/newlines
      # before the close curly brace
      if starts_with_brace && children_copy[i].is_a?(Hocon::Impl::ConfigNodeSingleToken) &&
          children_copy[i].token == Tokens::CLOSE_CURLY
        previous = children_copy[i - 1]
        if previous.is_a?(Hocon::Impl::ConfigNodeSingleToken) && Tokens.newline?(previous.token)
          children_copy.insert(i - 1, Hocon::Impl::ConfigNodeField.new(new_nodes))
          i -= 1
        elsif previous.is_a?(Hocon::Impl::ConfigNodeSingleToken) && Tokens.ignored_whitespace?(previous.token)
          before_previous = children_copy[i - 2]
          if same_line
            children_copy.insert(i - 1, Hocon::Impl::ConfigNodeField.new(new_nodes))
            i -= 1
          elsif before_previous.is_a?(Hocon::Impl::ConfigNodeSingleToken) && Tokens.newline?(before_previous.token)
            children_copy.insert(i - 2, Hocon::Impl::ConfigNodeField.new(new_nodes))
            i -= 2
          else
            children_copy.insert(i, Hocon::Impl::ConfigNodeField.new(new_nodes))
          end
        else
          children_copy.insert(i, Hocon::Impl::ConfigNodeField.new(new_nodes))
        end
      end

      i -= 1
    end
  end
  unless starts_with_brace
    if children_copy[-1].is_a?(Hocon::Impl::ConfigNodeSingleToken) && Tokens.newline?(children_copy[-1].token)
      children_copy.insert(-2, Hocon::Impl::ConfigNodeField.new(new_nodes))
    else
      children_copy.push(Hocon::Impl::ConfigNodeField.new(new_nodes))
    end
  end
  self.class.new(children_copy)
end

#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

#has_value(desired_path) ⇒ Object 



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# File 'lib/hocon/impl/config_node_object.rb', line 20

def has_value(desired_path)
  @children.each do |node|
    if node.is_a?(Hocon::Impl::ConfigNodeField)
      field = node
      key = field.path.value
      if key == desired_path || key.starts_with(desired_path)
        return true
      elsif desired_path.starts_with(key)
        if field.value.is_a?(self.class)
          obj = field.value
          remaining_path = desired_path.sub_path_to_end(key.length)
          if obj.has_value(remaining_path)
            return true
          end
        end
      end
    end
  end
  false
end

#indentation ⇒ Object 



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# File 'lib/hocon/impl/config_node_object.rb', line 125

def indentation
  seen_new_line = false
  indentation = []

  if @children.empty?
    return indentation
  end

  @children.each_index do |i|
    unless seen_new_line
      if @children[i].is_a?(Hocon::Impl::ConfigNodeSingleToken) && Tokens.newline?(@children[i].token)
        seen_new_line = true
        indentation.push(Hocon::Impl::ConfigNodeSingleToken.new(Tokens.new_line(nil)))
      end
    else
      if @children[i].is_a?(Hocon::Impl::ConfigNodeSingleToken) &&
          Tokens.ignored_whitespace?(@children[i].token) &&
          i + 1 < @children.size &&
          (@children[i + 1].is_a?(Hocon::Impl::ConfigNodeField) || @children[i + 1].is_a?(Hocon::Impl::ConfigNodeInclude))
        # Return the indentation of the first setting on its own line
        indentation.push(@children[i])
        return indentation
      end
    end
  end
  if indentation.empty?
    indentation.push(Hocon::Impl::ConfigNodeSingleToken.new(Tokens.new_ignored_whitespace(nil, " ")))
    return indentation
  else
    # Calculate the indentation of the ending curly-brace to get the indentation of the root object
    last = @children[-1]
    if last.is_a?(Hocon::Impl::ConfigNodeSingleToken) && last.token.equal?(Tokens::CLOSE_CURLY)
      beforeLast = @children[-2]
      indent = ""
      if beforeLast.is_a?(Hocon::Impl::ConfigNodeSingleToken) &&
          Tokens.ignored_whitespace?(beforeLast.token)
        indent = beforeLast.token.token_text
      end
      indent += "  "
      indentation.push(Hocon::Impl::ConfigNodeSingleToken.new(Tokens.new_ignored_whitespace(nil, indent)))
      return indentation
    end
  end

  # The object has no curly braces and is at the root level, so don't indent
  indentation
end

#new_node(nodes) ⇒ Object 



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# File 'lib/hocon/impl/config_node_object.rb', line 16

def new_node(nodes)
  self.class.new(nodes)
end

#remove_value_on_path(desired_path, flavor) ⇒ Object 



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# File 'lib/hocon/impl/config_node_object.rb', line 279

def remove_value_on_path(desired_path, flavor)
  path = Hocon::Impl::PathParser.parse_path_node(desired_path, flavor).value
  change_value_on_path(path, nil, flavor)
end

#set_value_on_path(desired_path, value, flavor = ConfigSyntax::CONF) ⇒ Object 



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# File 'lib/hocon/impl/config_node_object.rb', line 110

def set_value_on_path(desired_path, value, flavor = ConfigSyntax::CONF)
  path = Hocon::Impl::PathParser.parse_path_node(desired_path, flavor)
  set_value_on_path_node(path, value, flavor)
end

#set_value_on_path_node(desired_path, value, flavor) ⇒ Object 



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# File 'lib/hocon/impl/config_node_object.rb', line 115

def set_value_on_path_node(desired_path, value, flavor)
  node = change_value_on_path(desired_path.value, value, flavor)

  # If the desired Path did not exist, add it
  unless node.has_value(desired_path.value)
    return node.add_value_on_path(desired_path, value, flavor)
  end
  node
end