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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 = ["connection", "session", "file", "stream"]
gen_methods=@amqp.methods_on(@chassis).reject { |m|
excludes.include? m.parent.name or m.body_name.include?("010")
}
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
# Sync vs. async APIs
module SyncAsync
def sync_prefix() @async ? "Async" : "" end
def sync_adjective() @async ? "asynchronous" : "synchronous" end
def sync_convert() @async ? "async" : "sync" end
def decl_ctor_opeq()
genl
genl "#{@classname}();"
genl "#{@classname}(const #{@version_base}& other);"
genl "#{@classname}& operator=(const #{@version_base}& other);"
end
def defn_ctor_opeq(inline="")
genl
genl "#{inline} #{@classname}::#{@classname}() {}"
scope("#{inline} #{@classname}::#{@classname}(const #{@version_base}& other) {") {
genl "*this = other;"
}
scope("#{inline} #{@classname}& #{@classname}::operator=(const #{@version_base}& other) {") {
genl "impl = static_cast<const #{@classname}&>(other).impl;"
genl "return *this;"
}
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}|#{default_value}]"; end
def sig_default() signature+"="+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(async)
if (async)
return "TypedResult<qpid::framing::#{result.cpptype.ret_by_val}>" if (result)
return "Completion"
else
return "qpid::framing::#{result.cpptype.ret_by_val}" if (result)
return "void"
end
end
def session_function() "#{parent.name.lcaps}#{name.caps}"; end
end
class SessionNoKeywordGen < CppGen
include SyncAsync
def initialize(outdir, amqp, async)
super(outdir, amqp)
@async=async
@chassis="server"
@namespace,@classname,@file=
parse_classname "qpid::client::no_keyword::#{sync_prefix}Session_#{@amqp.version.bars}"
@version_base="SessionBase_#{@amqp.major}_#{@amqp.minor}"
end
def generate()
h_file(@file) {
include "qpid/client/#{@version_base}.h"
namespace(@namespace) {
doxygen_comment {
genl "AMQP #{@amqp.version} #{sync_adjective} session API."
genl @amqp.class_("session").doc
# FIXME aconway 2008-05-23: additional doc on sync/async use.
}
cpp_class(@classname, "public #{@version_base}") {
public
decl_ctor_opeq()
session_methods.each { |m|
genl
doxygen(m)
args=m.sig_c_default.join(", ")
genl "#{m.return_type(@async)} #{m.session_function}(#{args});"
}
}
}}
cpp_file(@file) {
include @classname
include "qpid/framing/all_method_bodies.h"
namespace(@namespace) {
genl "using namespace framing;"
session_methods.each { |m|
genl
sig=m.signature_c.join(", ")
func="#{@classname}::#{m.session_function}"
scope("#{m.return_type(@async)} #{func}(#{sig}) {") {
args=(["ProtocolVersion(#{@amqp.major},#{@amqp.minor})"]+m.param_names).join(", ")
genl "#{m.body_name} body(#{args});";
genl "body.setSync(#{@async ? 'false':'true'});"
sendargs="body"
sendargs << ", content" if m.content
async_retval="#{m.return_type(true)}(impl->send(#{sendargs}), impl)"
if @async then
genl "return #{async_retval};"
else
if m.result
genl "return #{async_retval}.get();"
else
genl "#{async_retval}.wait();"
end
end
}}
defn_ctor_opeq()
}}
end
end
class SessionGen < CppGen
include SyncAsync
def initialize(outdir, amqp, async)
super(outdir, amqp)
@async=async
@chassis="server"
session="#{sync_prefix}Session_#{@amqp.version.bars}"
@base="no_keyword::#{session}"
@fqclass=FqClass.new "qpid::client::#{session}"
@classname=@fqclass.name
@fqbase=FqClass.new("qpid::client::#{@base}")
@version_base="SessionBase_#{@amqp.major}_#{@amqp.minor}"
end
def gen_keyword_decl(m)
return if m.fields_c.empty? # Inherited function will do.
scope("BOOST_PARAMETER_MEMFUN(#{m.return_type(@async)}, #{m.session_function}, 0, #{m.fields_c.size}, #{m.argpack_name}) {") {
scope("return #{@base}::#{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("qpid/client/arg.h") {
# Generate keyword tag declarations.
genl "#define BOOST_PARAMETER_MAX_ARITY #{max_arity}"
include "<boost/parameter.hpp>"
namespace("qpid::client::arg") {
keyword_methods.map{ |m| m.param_names_c }.flatten.uniq.each { |k|
genl "BOOST_PARAMETER_KEYWORD(keyword_tags, #{k})"
}}
}
h_file(@fqclass.file) {
include @fqbase.file
include "qpid/client/arg"
namespace("qpid::client") {
# 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.
\\ingroup clientapi
EOS
}
# Session class.
cpp_class(@classname,"public #{@base}") {
public
decl_ctor_opeq()
private
keyword_methods.each { |m| typedef m.argpack_type, m.argpack_name }
genl "friend class Connection;"
public
keyword_methods.each { |m| gen_keyword_decl(m) }
}
genl "/** Conversion to #{@classname} from another session type */"
genl "inline #{@classname} #{sync_convert}(const #{@version_base}& other) { return #{@clasname}(other); }"
defn_ctor_opeq("inline")
}}
end
end
SessionNoKeywordGen.new(ARGV[0], $amqp, true).generate()
SessionNoKeywordGen.new(ARGV[0], $amqp, false).generate()
SessionGen.new(ARGV[0], $amqp, true).generate()
SessionGen.new(ARGV[0], $amqp, false).generate()
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