Class: Puppet::Pops::Evaluator::CollectorTransformer

Inherits:
Object
  • Object
show all
Defined in:
lib/puppet/pops/evaluator/collector_transformer.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CollectorTransformer

Returns a new instance of CollectorTransformer.



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# File 'lib/puppet/pops/evaluator/collector_transformer.rb', line 3

def initialize
  @@query_visitor    ||= Puppet::Pops::Visitor.new(nil, "query", 1, 1)
  @@match_visitor    ||= Puppet::Pops::Visitor.new(nil, "match", 1, 1)
  @@evaluator        ||= Puppet::Pops::Evaluator::EvaluatorImpl.new
  @@compare_operator ||= Puppet::Pops::Evaluator::CompareOperator.new()
end

Instance Method Details

#transform(o, scope) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/puppet/pops/evaluator/collector_transformer.rb', line 10

def transform(o, scope)
  raise ArgumentError, "Expected CollectExpression" unless o.is_a? Puppet::Pops::Model::CollectExpression

  raise "LHS is not a type" unless o.type_expr.is_a? Puppet::Pops::Model::QualifiedReference
  type = o.type_expr.value().downcase()

  if type == 'class'
    fail "Classes cannot be collected"
  end

  resource_type = scope.find_resource_type(type)
  fail "Resource type #{type} doesn't exist" unless resource_type

  adapter = Puppet::Pops::Adapters::SourcePosAdapter.adapt(o)
  line_num = adapter.line
  position = adapter.pos
  file_path = adapter.locator.file

  if !o.operations.empty?
    overrides = {
      :parameters => o.operations.map{ |x| @@evaluator.evaluate(x, scope)}.flatten,
      :file       => file_path,
      :line       => [line_num, position],
      :source     => scope.source,
      :scope      => scope
    }
  end

  code = query_unless_nop(o.query, scope)

  case o.query
  when Puppet::Pops::Model::VirtualQuery
    newcoll = Puppet::Pops::Evaluator::Collectors::CatalogCollector.new(scope, resource_type.name, code, overrides)
  when Puppet::Pops::Model::ExportedQuery
    match = match_unless_nop(o.query, scope)
    newcoll = Puppet::Pops::Evaluator::Collectors::ExportedCollector.new(scope, resource_type.name, match, code, overrides)
  end

  scope.compiler.add_collection(newcoll)

  newcoll
end