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#!/usr/bin/env ruby
#
# 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.
#
# Usage: output_directory xml_spec_file [xml_spec_file...]
#
$: << '..'
require 'cppgen'
class OperationsInvokerGen < CppGen
def initialize(chassis, outdir, amqp)
super(outdir, amqp)
@chassis=chassis
@ops="AMQP_#{@chassis.caps}Operations"
@classname="#{@ops}::Invoker"
@filename="qpid/framing/#{@chassis.caps}Invoker"
end
def methods_on(parent, chassis)
chassis == "all" ? parent.methods_ : parent.methods_on(chassis)
end
def handler(c) "#{@ops}::#{c.cppname}Handler"; end
def getter(c) "get#{c.cppname}Handler"; end
def invoker(c) "#{handler(c)}::Invoker"; end
def visit_methods(c) methods_on(c, @chassis).select { |m| !m.content } end
def handler_visits_cpp(c)
visit_methods(c).each { |m|
scope("void #{invoker(c)}::visit(const #{m.body_name}& body) {") {
if (m.result)
genl "this->encode(body.invoke(target), result.result);"
else
genl "body.invoke(target);"
end
genl "result.handled=true;"
}
}
end
def ops_visits_cpp()
@amqp.classes.each { |c|
visit_methods(c).each { |m|
scope("void #{@classname}::visit(const #{m.body_name}& body) {") {
genl "#{handler(c)}::Invoker invoker(*target.#{getter(c)}());"
genl "body.accept(invoker);"
genl "result=invoker.getResult();"
}
}
}
end
def invoker_h(invoker, target, methods)
return if methods.empty?
genl
cpp_extern_class("QPID_COMMON_CLASS_EXTERN", invoker, "public qpid::framing::Invoker") {
genl "#{target}& target;"
public
genl("Invoker(#{target}& target_) : target(target_) {}")
genl "using MethodBodyDefaultVisitor::visit;"
methods.each { |m| genl "QPID_COMMON_EXTERN void visit(const #{m.body_name}& body);" }
}
end
def generate()
h_file(@filename) {
include "qpid/framing/#{@ops}"
include "qpid/framing/Invoker.h"
include "qpid/CommonImportExport.h"
namespace("qpid::framing") {
# AMQP_*Operations invoker.
methods=@amqp.classes.map { |c| visit_methods(c).to_a }.flatten
invoker_h(@classname, @ops, methods)
# AMQP_*Operations::*Handler invokers.
@amqp.classes.each { |c|
invoker_h(invoker(c), handler(c), visit_methods(c))
}
}
}
cpp_file(@filename) {
include @filename
@amqp.classes.each { |c|
visit_methods(c).each { |m|
include "qpid/framing/#{m.body_name}"
}}
namespace("qpid::framing") {
ops_visits_cpp
@amqp.classes.each { |c|
next if visit_methods(c).empty?
handler_visits_cpp(c)
}
}
}
end
end
OperationsInvokerGen.new("client",$outdir, $amqp).generate()
OperationsInvokerGen.new("server",$outdir, $amqp).generate()
OperationsInvokerGen.new("all",$outdir, $amqp).generate()
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