class Puppet::Parser::AST::Selector

# File lib/puppet/parser/ast/selector.rb, line 9
def each
  [@param,@values].each { |child| yield child }
end

# File lib/puppet/parser/ast/selector.rb, line 14
def evaluate(scope)
  level = scope.ephemeral_level
  # Get our parameter.
  paramvalue = @param.safeevaluate(scope)

  default = nil

  @values = [@values] unless @values.instance_of? AST::ASTArray or @values.instance_of? Array

  # Then look for a match in the options.
  @values.each do |obj|
    # short circuit asap if we have a match
    return obj.value.safeevaluate(scope) if obj.param.evaluate_match(paramvalue, scope)

    # Store the default, in case it's necessary.
    default = obj if obj.param.is_a?(Default)
  end

  # Unless we found something, look for the default.
  return default.value.safeevaluate(scope) if default

  self.fail Puppet::ParseError, "No matching value for selector param '#{paramvalue}'"
ensure
  scope.unset_ephemeral_var(level)
end

# File lib/puppet/parser/ast/selector.rb, line 40
def to_s
  if @values.instance_of? AST::ASTArray or @values.instance_of? Array
    v = @values
  else
    v = [@values]
  end

  param.to_s + " ? { " + v.collect { |v| v.to_s }.join(', ') + " }"
end