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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
class Qpid::Invoker
# Requires that client defines a invoke method and overrides
# resolve_method
# FIXME: Is it really worth defining methods in method_missing ? We
# could just dispatch there directly
def invc_method(name, resolved)
define_singleton_method(name) { |*args| invoke(resolved, args) }
# FIXME: the Python code also attaches docs from resolved.pydoc
end
def invc_value(name, resolved)
define_singleton_method(name) { | | resolved }
end
def invc_error(name, resolved)
msg = "%s instance has no attribute '%s'" % [self.class.name, name]
if resolved
msg += "\n%s" % resolved
end
raise NameError, msg
end
def resolve_method(name)
invocation(:error, nil)
end
def method_missing(name, *args)
disp, resolved = resolve_method(name)
disp.call(name, resolved)
send(name, *args)
end
def invocation(kind, name = nil)
[ method("invc_#{kind}"), name ]
end
private
def define_singleton_method(name, &body)
singleton_class = class << self; self; end
singleton_class.send(:define_method, name, &body)
end
end
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