class Puppet::Parser::AST::CaseStatement

The basic logical structure in Puppet. Supports a list of tests and statement arrays.

Attributes

default[RW]

options[RW]

test[RW]

Public Instance Methods

each() { |child| ... } click to toggle source

# File lib/puppet/parser/ast/casestatement.rb, line 40
def each
  [@test,@options].each { |child| yield child }
end

evaluate(scope) click to toggle source

Short-curcuit evaluation. Return the value of the statements for the first option that matches.

# File lib/puppet/parser/ast/casestatement.rb, line 13
def evaluate(scope)
  level = scope.ephemeral_level

  value = @test.safeevaluate(scope)

  retvalue = nil
  found = false

  # Iterate across the options looking for a match.
  default = nil
  @options.each do |option|
    option.eachopt do |opt|
      return option.safeevaluate(scope) if opt.evaluate_match(value, scope)
    end

    default = option if option.default?
  end

  # Unless we found something, look for the default.
  return default.safeevaluate(scope) if default

  Puppet.debug "No true answers and no default"
  return nil
ensure
  scope.unset_ephemeral_var(level)
end