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require 'puppet/parser/ast/branch'
class Puppet::Parser::AST
# The inline conditional operator. Unlike CaseStatement, which executes
# code, we just return a value.
class Selector < AST::Branch
attr_accessor :param, :values
def each
[@param,@values].each { |child| yield child }
end
# Find the value that corresponds with the test.
def evaluate(hash)
scope = hash[:scope]
retvalue = nil
found = nil
# Get our parameter.
paramvalue = @param.safeevaluate(:scope => scope)
sensitive = Puppet[:casesensitive]
if ! sensitive and paramvalue.respond_to?(:downcase)
paramvalue = paramvalue.downcase
end
default = nil
unless @values.instance_of? AST::ASTArray or @values.instance_of? Array
@values = [@values]
end
# Then look for a match in the options.
@values.each { |obj|
param = obj.param.safeevaluate(:scope => scope)
if ! sensitive && param.respond_to?(:downcase)
param = param.downcase
end
if param == paramvalue
# we found a matching option
retvalue = obj.value.safeevaluate(:scope => scope)
found = true
break
elsif obj.param.is_a?(Default)
# Store the default, in case it's necessary.
default = obj
end
}
# Unless we found something, look for the default.
unless found
if default
retvalue = default.value.safeevaluate(:scope => scope)
else
self.fail Puppet::ParseError,
"No matching value for selector param '%s'" % paramvalue
end
end
return retvalue
end
def tree(indent = 0)
return [
@param.tree(indent + 1),
((@@indline * indent) + self.typewrap(self.pin)),
@values.tree(indent + 1)
].join("\n")
end
end
end
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