Class: Puppet::Parser::AST::Collection

Inherits:
Branch show all
Defined in:
lib/puppet/parser/ast/collection.rb

Instance Attribute Summary collapse

Attributes inherited from Branch

#children, #pin

Instance Method Summary collapse

Methods inherited from Branch

#each, #initialize

Constructor Details

This class inherits a constructor from Puppet::Parser::AST::Branch

Instance Attribute Details

#form ⇒ Object 



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# File 'lib/puppet/parser/ast/collection.rb', line 9

def form
  @form
end

#override ⇒ Object 



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# File 'lib/puppet/parser/ast/collection.rb', line 10

def override
  @override
end

#query ⇒ Object 



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# File 'lib/puppet/parser/ast/collection.rb', line 9

def query
  @query
end

#type ⇒ Object 



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# File 'lib/puppet/parser/ast/collection.rb', line 9

def type
  @type
end

Instance Method Details

#evaluate(scope) ⇒ Object

We return an object that does a late-binding evaluation.



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# File 'lib/puppet/parser/ast/collection.rb', line 15

def evaluate(scope)
  match, code = query && query.safeevaluate(scope)

  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
  newcoll = Puppet::Parser::Collector.new(scope, resource_type.name, match, code, self.form)

  scope.compiler.add_collection(newcoll)

  # overrides if any
  # Evaluate all of the specified params.
  if @override
    params = @override.collect { |param| param.safeevaluate(scope) }
    newcoll.add_override(
      :parameters => params,
      :file       => @file,
      :line       => @line,
      :source     => scope.source,
      :scope      => scope
    )
  end

  newcoll
end