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module KDL
class Node
attr_accessor :name, :arguments, :properties, :children, :type
def initialize(name, arguments = [], properties = {}, children = [], type: nil)
@name = name
@arguments = arguments
@properties = properties
@children = children
@type = type
end
def to_s(level = 0)
indent = ' ' * level
s = "#{indent}#{type ? "(#{id_to_s type})" : ''}#{id_to_s name}"
unless arguments.empty?
s += " #{arguments.map(&:to_s).join(' ')}"
end
unless properties.empty?
s += " #{properties.map { |k, v| "#{id_to_s k}=#{v}" }.join(' ')}"
end
unless children.empty?
s += " {\n"
s += children.map { |c| "#{c.to_s(level + 1)}\n" }.join("\n")
s += "#{indent}}"
end
s
end
def ==(other)
return false unless other.is_a?(Node)
name == other.name &&
arguments == other.arguments &&
properties == other.properties &&
children == other.children
end
def as_type(type, parser = nil)
if parser.nil?
@type = type
self
else
result = parser.call(self, type)
return self.as_type(type) if result.nil?
unless result.is_a?(::KDL::Node)
raise ArgumentError, "expected parser to return an instance of ::KDL::Node, got `#{result.class}'"
end
result
end
end
private
def id_to_s(id)
StringDumper.stringify_identifier(id)
end
end
end
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