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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.
#
$: << ".." # Include .. in load path
require 'cppgen'
class TypeCode < CppGen
def initialize(outdir, amqp)
super(outdir, amqp)
@ns="qpid::amqp_#{@amqp.version.bars}"
@dir="qpid/amqp_#{@amqp.version.bars}"
@types = @amqp.collect_all(AmqpType).select { |t| t.code }
end
def type_for_code_h()
h_file("#{@dir}/TypeForCode") {
include "#{@dir}/built_in_types.h"
include "#{@dir}/UnknownType.h"
namespace(@ns) {
genl
genl "template <uint8_t Code> struct TypeForCode;"
genl
@types.each { |t|
genl "template <> struct TypeForCode<#{t.code}> { typedef #{t.typename} type; };"
}
genl
genl "template <class V> typename V::result_type"
scope("apply_visitor(V& visitor, uint8_t code) {") {
scope("switch (code) {", "}") {
@types.each { |t|
genl "case #{t.code}: return visitor((#{t.typename}*)0);"
}
genl "default: return visitor((UnknownType*)0);"
}
}
genl
genl "std::string typeName(uint8_t code);"
}
}
end
def type_for_code_cpp()
cpp_file("#{@dir}/TypeForCode") {
include "<string>"
include "<sstream>"
namespace(@ns) {
namespace("") {
struct("Names") {
scope("Names() {") {
scope("for (int i =0; i < 256; ++i) {") {
genl "std::ostringstream os;"
genl "os << \"UnknownType<\" << i << \">\";"
genl "names[i] = os.str();"
}
@types.each { |t| genl "names[#{t.code}] = \"#{t.name}\";" }
}
genl "std::string names[256];"
}
genl "Names names;"
}
genl "std::string typeName(uint8_t code) { return names.names[code]; }"
}}
end
def code_for_type_h()
name="#{@dir}/CodeForType"
h_file(name) {
include "#{@dir}/built_in_types.h"
namespace(@ns) {
genl
genl "template <class T> struct CodeForType;"
genl
@types.each { |t|
genl "template <> struct CodeForType<#{t.typename}> { static const uint8_t value; };"
}
genl
genl "template <class T> uint8_t codeFor(const T&) { return CodeForType<T>::value; }"
}
}
cpp_file(name) {
include name
namespace(@ns) {
@types.each { |t|
genl "const uint8_t CodeForType<#{t.typename}>::value=#{t.code};"
}
}
}
end
def generate
type_for_code_h
type_for_code_cpp
code_for_type_h
end
end
TypeCode.new($outdir, $amqp).generate();
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