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require 'puppet/parser/ast/branch'
class Puppet::Parser::AST
# A basic 'if/elsif/else' statement.
class IfStatement < AST::Branch
associates_doc
attr_accessor :test, :else, :statements
def each
[@test,@else,@statements].each { |child| yield child }
end
# Short-curcuit evaluation. If we're true, evaluate our statements,
# else if there's an 'else' setting, evaluate it.
# the first option that matches.
def evaluate(scope)
value = @test.safeevaluate(scope)
if Puppet::Parser::Scope.true?(value)
return @statements.safeevaluate(scope)
else
if defined? @else
return @else.safeevaluate(scope)
else
return nil
end
end
end
end
end
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