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Contents
# The RubyFunctionInstantiator instantiates a Puppet::Functions::Function given the ruby source
# that calls Puppet::Functions.create_function.
#
class Puppet::Pops::Loader::RubyFunctionInstantiator
# Produces an instance of the Function class with the given typed_name, or fails with an error if the
# given ruby source does not produce this instance when evaluated.
#
# @param loader [Puppet::Pops::Loader::Loader] The loader the function is associated with
# @param typed_name [Puppet::Pops::Loader::TypedName] the type / name of the function to load
# @param source_ref [URI, String] a reference to the source / origin of the ruby code to evaluate
# @param ruby_code_string [String] ruby code in a string
#
# @return [Puppet::Pops::Functions.Function] - an instantiated function with global scope closure associated with the given loader
#
def self.create(loader, typed_name, source_ref, ruby_code_string)
unless ruby_code_string.is_a?(String) && ruby_code_string =~ /Puppet\:\:Functions\.create_function/
raise ArgumentError, "The code loaded from #{source_ref} does not seem to be a Puppet 4x API function - no create_function call."
end
created = eval(ruby_code_string)
unless created.is_a?(Class)
raise ArgumentError, "The code loaded from #{source_ref} did not produce a Function class when evaluated. Got '#{created.class}'"
end
unless created.name.to_s == typed_name.name()
raise ArgumentError, "The code loaded from #{source_ref} produced mis-matched name, expected '#{typed_name.name}', got #{created.name}"
end
# create the function instance - it needs closure (scope), and loader (i.e. where it should start searching for things
# when calling functions etc.
# It should be bound to global scope
# TODO: Cheating wrt. scope - assuming it is found in the context
closure_scope = Puppet.lookup(:global_scope) { {} }
created.new(closure_scope, loader.private_loader)
end
end
Version data entries
8 entries across 8 versions & 1 rubygems