Class: Puppet::Parser::AST::Variable

Inherits:
Name show all
Defined in:
lib/vendor/puppet/parser/ast/leaf.rb

Overview

A simple variable. This object is only used during interpolation; the VarDef class is used for assignment.

Constant Summary

Constants inherited from Puppet::Parser::AST

AST

Constants included from Util::Docs

Util::Docs::HEADER_LEVELS

Instance Attribute Summary

Attributes inherited from Leaf

#type, #value

Attributes inherited from Puppet::Parser::AST

#file, #line, #parent, #scope

Attributes included from Util::Docs

#doc, #nodoc

Instance Method Summary collapse

Methods inherited from Leaf

#match

Methods inherited from Puppet::Parser::AST

associates_doc, #evaluate_match, #initialize, #inspect, #parsefail, #parsewrap, #safeevaluate, settor?, #use_docs

Methods included from Util::Docs

#desc, #dochook, #doctable, #markdown_definitionlist, #markdown_header, #nodoc?, #pad, scrub

Methods included from Util::MethodHelper

#requiredopts, #set_options, #symbolize_options

Methods included from Util::Errors

#adderrorcontext, #devfail, #error_context, #exceptwrap, #fail

Constructor Details

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

Instance Method Details

#evaluate(scope) ⇒ Object

Looks up the value of the object in the scope tree (does not include syntactical constructs, like ‘$’ and ‘{}’).



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# File 'lib/vendor/puppet/parser/ast/leaf.rb', line 125

def evaluate(scope)
  parsewrap do
    if (var = scope.lookupvar(@value, :file => file, :line => line)) == :undefined
      var = :undef
    end
    var
  end
end

#to_s ⇒ Object 



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# File 'lib/vendor/puppet/parser/ast/leaf.rb', line 134

def to_s
  "\$#{value}"
end