require 'puppet/parser/ast/resource_reference'

# Any normal puppet resource declaration.  Can point to a definition or a
# builtin type.
class Puppet::Parser::AST
class Resource < AST::ResourceReference

  associates_doc

  attr_accessor :title, :type, :exported, :virtual
  attr_reader :parameters

  # Does not actually return an object; instead sets an object
  # in the current scope.
  def evaluate(scope)
    # Evaluate all of the specified params.
    paramobjects = parameters.collect { |param|
      param.safeevaluate(scope)
    }

    resource_titles = @title.safeevaluate(scope)

    # it's easier to always use an array, even for only one name
    resource_titles = [resource_titles] unless resource_titles.is_a?(Array)

    # We want virtual to be true if exported is true.  We can't
    # just set :virtual => self.virtual in the initialization,
    # because sometimes the :virtual attribute is set *after*
    # :exported, in which case it clobbers :exported if :exported
    # is true.  Argh, this was a very tough one to track down.
    virt = self.virtual || self.exported

    # This is where our implicit iteration takes place; if someone
    # passed an array as the name, then we act just like the called us
    # many times.
    fully_qualified_type, resource_titles = scope.resolve_type_and_titles(type, resource_titles)

    resource_titles.flatten.collect { |resource_title|
      exceptwrap :type => Puppet::ParseError do
        resource = Puppet::Parser::Resource.new(
          fully_qualified_type, resource_title,
          :parameters => paramobjects,
          :file => self.file,
          :line => self.line,
          :exported => self.exported,
          :virtual => virt,
          :source => scope.source,
          :scope => scope,
          :strict => true
        )

        if resource.resource_type.is_a? Puppet::Resource::Type
          resource.resource_type.instantiate_resource(scope, resource)
        end
        scope.compiler.add_resource(scope, resource)
        scope.compiler.evaluate_classes([resource_title],scope,false) if fully_qualified_type == 'class'
        resource
      end
    }.reject { |resource| resource.nil? }
  end

  # Set the parameters for our object.
  def parameters=(params)
    if params.is_a?(AST::ASTArray)
      @parameters = params
    else
      @parameters = AST::ASTArray.new(
        :line => params.line,
        :file => params.file,
        :children => [params]
      )
    end
  end
end
end