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require 'puppet/parser/ast/branch'
class Puppet::Parser::AST
# A reference to an object. Only valid as an rvalue.
class ResourceReference < AST::Branch
attr_accessor :title, :type
# Is the type a builtin type?
def builtintype?(type)
if typeklass = Puppet::Type.type(type)
return typeklass
else
return false
end
end
def each
[@type,@title].flatten.each { |param|
#Puppet.debug("yielding param %s" % param)
yield param
}
end
# Evaluate our object, but just return a simple array of the type
# and name.
def evaluate(scope)
title = @title.safeevaluate(scope)
title = [title] unless title.is_a?(Array)
if @type.to_s.downcase == "class"
resource_type = "class"
title = title.collect { |t| qualified_class(scope, t) }
else
resource_type = qualified_type(scope)
end
title = title.collect { |t| Puppet::Parser::Resource::Reference.new(
:type => resource_type, :title => t
) }
return title.pop if title.length == 1
return title
end
# Look up a fully qualified class name.
def qualified_class(scope, title)
# Look up the full path to the class
if classobj = scope.find_hostclass(title)
title = classobj.classname
else
raise Puppet::ParseError, "Could not find class %s" % title
end
end
# Look up a fully-qualified type. This method is
# also used in AST::Resource.
def qualified_type(scope, title = nil)
# We want a lower-case type. For some reason.
objtype = @type.downcase
unless builtintype?(objtype)
if dtype = scope.find_definition(objtype)
objtype = dtype.classname
else
raise Puppet::ParseError, "Could not find resource type %s" % objtype
end
end
return objtype
end
end
end
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