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#!/usr/bin/env ruby
# Usage: output_directory xml_spec_file [xml_spec_file...]
#
$: << '..'
require 'cppgen'
class CppGen
def session_methods
excludes = ["channel", "connection", "session", "execution"]
gen_methods=@amqp.methods_on(@chassis).reject { |m|
excludes.include? m.parent.name
}
end
def doxygen(m)
doxygen_comment {
genl m.doc
genl
m.fields_c.each { |f|
genl "@param #{f.cppname}"
genl f.doc if f.doc
genl
}
}
end
end
class ContentField # For extra content parameters
def cppname() "content" end
def signature() "const MethodContent& content" end
def sig_default() signature+"="+"DefaultContent(std::string())" end
def unpack() "p[arg::content|DefaultContent(std::string())]"; end
def doc() "Message content"; end
end
class AmqpField
def unpack() "p[arg::#{cppname}|#{cpptype.default_value}]"; end
def sig_default() signature+"="+cpptype.default_value; end
end
class AmqpMethod
def fields_c() content ? fields+[ContentField.new] : fields end
def param_names_c() fields_c.map { |f| f.cppname} end
def signature_c() fields_c.map { |f| f.signature }; end
def sig_c_default() fields_c.map { |f| f.sig_default }; end
def argpack_name() "#{parent.cppname}#{name.caps}Parameters"; end
def argpack_type()
"boost::parameter::parameters<" +
fields_c.map { |f| "arg::keyword_tags::"+f.cppname }.join(',') +
">"
end
def return_type()
return "TypedResult<qpid::framing::#{result.cpptype.ret}>" if (result)
return "Response" if (not responses().empty?)
return "Completion"
end
def session_function() "#{parent.name.lcaps}#{name.caps}"; end
end
class SessionNoKeywordGen < CppGen
def initialize(outdir, amqp)
super(outdir, amqp)
@chassis="server"
@namespace,@classname,@file=
parse_classname "qpid::client::no_keyword::Session_#{@amqp.version.bars}"
end
def generate()
h_file(@file) {
include "qpid/framing/amqp_framing.h"
include "qpid/framing/Uuid.h"
include "qpid/framing/amqp_structs.h"
include "qpid/framing/ProtocolVersion.h"
include "qpid/framing/MethodContent.h"
include "qpid/framing/TransferContent.h"
include "qpid/client/Completion.h"
include "qpid/client/ConnectionImpl.h"
include "qpid/client/Response.h"
include "qpid/client/SessionCore.h"
include "qpid/client/TypedResult.h"
include "qpid/shared_ptr.h"
include "<string>"
namespace("qpid::client") {
genl "using std::string;"
genl "using framing::Content;"
genl "using framing::FieldTable;"
genl "using framing::MethodContent;"
genl "using framing::SequenceNumberSet;"
genl "using framing::Uuid;"
genl
namespace("no_keyword") {
doxygen_comment {
genl "AMQP #{@amqp.version} session API."
genl @amqp.class_("session").doc
}
cpp_class(@classname) {
public
gen <<EOS
#{@classname}();
/** Get the next message frame-set from the session. */
framing::FrameSet::shared_ptr get() { return impl->get(); }
/** Get the session ID */
Uuid getId() const { return impl->getId(); }
/** @param sync if true all session methods block till a response arrives. */
void setSynchronous(bool sync) { impl->setSync(sync); }
/** Suspend the session, can be resumed on a different connection.
* @see Connection::resume()
*/
void suspend();
/** Close the session */
void close();
Execution& execution() { return impl->getExecution(); }
typedef framing::TransferContent DefaultContent;
EOS
session_methods.each { |m|
genl
doxygen(m)
args=m.sig_c_default.join(", ")
genl "#{m.return_type} #{m.session_function}(#{args});"
}
genl
protected
gen <<EOS
shared_ptr<SessionCore> impl;
framing::ProtocolVersion version;
friend class Connection;
#{@classname}(shared_ptr<SessionCore>);
EOS
}}}}
cpp_file(@file) {
include @classname
include "qpid/framing/all_method_bodies.h"
namespace(@namespace) {
gen <<EOS
using namespace framing;
#{@classname}::#{@classname}() {}
#{@classname}::#{@classname}(shared_ptr<SessionCore> core) : impl(core) {}
void #{@classname}::suspend() { impl->suspend(); }
void #{@classname}::close() { impl->close(); }
EOS
session_methods.each { |m|
genl
sig=m.signature_c.join(", ")
func="#{@classname}::#{m.session_function}"
scope("#{m.return_type} #{func}(#{sig}) {") {
args=(["ProtocolVersion()"]+m.param_names).join(", ")
body="#{m.body_name}(#{args})"
sendargs=body
sendargs << ", content" if m.content
genl "return #{m.return_type}(impl->send(#{sendargs}), impl);"
}}}}
end
end
class SessionGen < CppGen
def initialize(outdir, amqp)
super(outdir, amqp)
@chassis="server"
session="Session_#{@amqp.version.bars}"
@base="no_keyword::#{session}"
@fqclass=FqClass.new "qpid::client::#{session}"
@classname=@fqclass.name
@fqbase=FqClass.new("qpid::client::#{@base}")
end
def gen_keyword_decl(m, prefix)
return if m.fields_c.empty? # Inherited function will do.
scope("BOOST_PARAMETER_MEMFUN(#{m.return_type}, #{m.session_function}, 0, #{m.fields_c.size}, #{m.argpack_name}) {") {
scope("return #{prefix}#{m.session_function}(",");") {
gen m.fields_c.map { |f| f.unpack() }.join(",\n")
}
}
genl
end
def generate()
keyword_methods=session_methods.reject { |m| m.fields_c.empty? }
max_arity = keyword_methods.map{ |m| m.fields_c.size }.max
h_file(@fqclass.file) {
include @fqbase.file
genl
genl "#define BOOST_PARAMETER_MAX_ARITY #{max_arity}"
include "<boost/parameter.hpp>"
genl
namespace("qpid::client") {
# Generate keyword tag declarations.
namespace("arg") {
keyword_methods.map{ |m| m.param_names_c }.flatten.uniq.each { |k|
genl "BOOST_PARAMETER_KEYWORD(keyword_tags, #{k})"
}}
genl
# Doxygen comment.
doxygen_comment {
genl "AMQP #{@amqp.version} session API with keyword arguments."
genl <<EOS
This class provides the same set of functions as #{@base}, but also
allows parameters be passed using keywords. The keyword is the
parameter name in the namespace "arg".
For example given the normal function "foo(int x=0, int y=0, int z=0)"
you could call it in either of the following ways:
@code
session.foo(1,2,3); // Normal no keywords
session.foo(arg::z=3, arg::x=1); // Keywords and a default
@endcode
The keyword functions are easy to use but their declarations are hard
to read. You may find it easier to read the documentation for #{@base}
which provides the same set of functions using normal non-keyword
declarations.
EOS
}
# Session class.
cpp_class(@classname,"public #{@base}") {
private
genl "#{@classname}(shared_ptr<SessionCore> core) : #{ @base}(core) {}"
keyword_methods.each { |m| typedef m.argpack_type, m.argpack_name }
genl "friend class Connection;"
public
genl "#{@classname}() {}"
keyword_methods.each { |m| gen_keyword_decl(m,@base+"::") }
}}}
end
end
SessionNoKeywordGen.new(ARGV[0], Amqp).generate()
SessionGen.new(ARGV[0], Amqp).generate()
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