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require 'puppet/parser/ast/branch'
class Puppet::Parser::AST
# The basic container class. This object behaves almost identically
# to a normal array except at initialization time. Note that its name
# is 'AST::ASTArray', rather than plain 'AST::Array'; I had too many
# bugs when it was just 'AST::Array', because things like
# 'object.is_a?(Array)' never behaved as I expected.
class ASTArray < Branch
include Enumerable
# Return a child by index. Probably never used.
def [](index)
@children[index]
end
# Evaluate our children.
def evaluate(scope)
result = []
@children.each do |child|
# Skip things that respond to :instantiate (classes, nodes,
# and definitions), because they have already been
# instantiated.
if !child.respond_to?(:instantiate)
item = child.safeevaluate(scope)
if !item.nil?
# nil values are implicitly removed.
result.push(item)
end
end
end
result
end
def push(*ary)
ary.each { |child|
#Puppet.debug "adding %s(%s) of type %s to %s" %
# [child, child.object_id, child.class.to_s.sub(/.+::/,''),
# self.object_id]
@children.push(child)
}
self
end
def to_s
"[" + @children.collect { |c| c.to_s }.join(', ') + "]"
end
end
end
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