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#!/usr/bin/python
# Interim code generation script.
import sys, os
from cStringIO import StringIO
sys.path.append("../../python")
import mllib
out_dir=sys.argv[1]
out_pkg = sys.argv[2]
spec_file = sys.argv[3]
spec = mllib.xml_parse(spec_file)
major = spec["amqp/@major"]
minor = spec["amqp/@minor"]
isfx = "_v%s_%s" % (major, minor)
class Output:
def __init__(self, dir, package, name):
self.dir = dir
self.package = package
self.name = name
self.lines = []
self.line("package %s;" % self.package)
self.line()
self.line("import java.util.Map;")
self.line("import java.util.UUID;")
self.line()
self.line()
def line(self, l = ""):
self.lines.append(l)
def write(self):
dir = os.path.join(self.dir, *self.package.split("."))
if not os.path.exists(dir):
os.makedirs(dir)
file = os.path.join(dir, "%s.java" % self.name)
out = open(file, "w")
for l in self.lines:
out.write(l)
out.write(os.linesep)
out.close()
TYPES = {
"longstr": "String",
"shortstr": "String",
"longlong": "long",
"long": "long",
"short": "int",
"octet": "short",
"bit": "boolean",
"table": "Map<String,?>",
"timestamp": "long",
"content": "String",
"uuid": "UUID",
"rfc1982-long-set": "Range<Long>[]"
}
def camel(offset, *args):
parts = []
for a in args:
parts.extend(a.split("-"))
return "".join(parts[:offset] + [p.capitalize() for p in parts[offset:]])
def dromedary(s):
return s[0].lower() + s[1:]
def scream(*args):
return "_".join([a.replace("-", "_").upper() for a in args])
DOMAINS = {}
EXCLUDE = {"access-ticket": True}
for d in spec.query["amqp/domain"]:
DOMAINS[d["@name"]] = d["@type"]
def resolve(type):
if DOMAINS.has_key(type) and DOMAINS[type] != type:
return resolve(DOMAINS[type])
else:
return type
OPTIONS = {}
class Struct:
def __init__(self, type, name):
self.type = type
self.name = name
self.fields = []
def field(self, type, name):
self.fields.append((type, name))
def interface(self, out):
out.line("public interface %s extends Method {" % self.name)
out.line()
out.line(" public static final int TYPE = %d;" % self.type)
out.line()
for type, name in self.fields:
out.line(" %s %s();" % (TYPES[type], camel(1, "get", name)))
out.line()
out.line("}")
def impl(self, out):
out.line("class %s%s extends AbstractMethod implements %s {" %
(self.name, isfx, self.name))
out.line()
out.line(" public int getEncodedType() {")
out.line(" return TYPE;")
out.line(" }")
out.line()
for type, name in self.fields:
out.line(" private final %s %s;" % (TYPES[type], name))
out.line()
out.line(" %s%s(Decoder dec) {" % (self.name, isfx))
for type, name in self.fields:
out.line(" %s = dec.read%s();" % (name, camel(0, type)))
out.line(" }")
out.line()
out.line(" %s%s(%s) {" % (self.name, isfx, self.parameters()))
opts = False
for type, name in self.fields:
if not OPTIONS.has_key(name):
out.line(" this.%s = %s;" % (name, name))
else:
opts = True
if opts:
for type, name in self.fields:
if OPTIONS.has_key(name):
out.line(" boolean _%s = false;" % name)
out.line(" for (int i=0; i < _options.length; i++) {")
out.line(" switch (_options[i]) {")
for type, name in self.fields:
if OPTIONS.has_key(name):
out.line(" case %s: _%s=true; break;" % (OPTIONS[name], name))
out.line(' default: throw new IllegalArgumentException'
'("invalid option: " + _options[i]);')
out.line(" }")
out.line(" }")
for type, name in self.fields:
if OPTIONS.has_key(name):
out.line(" this.%s = _%s;" % (name, name))
out.line(" }")
out.line()
out.line(" public <C> void delegate(C context, Delegate<C> delegate) {")
out.line(" delegate.%s(context, this);" % dromedary(self.name))
out.line(" }")
out.line()
for type, name in self.fields:
out.line(" public %s %s() {" % (TYPES[type], camel(1, "get", name)))
out.line(" return %s;" % name)
out.line(" }")
out.line()
out.line(" public void write(Encoder enc) {")
for type, name in self.fields:
out.line(" enc.write%s(%s);" % (camel(0, type), name))
out.line(" }")
out.line("}")
def parameters(self):
params = []
var = False
for type, name in self.fields:
if OPTIONS.has_key(name):
var = True
else:
params.append("%s %s" % (TYPES[type], name))
if var:
params.append("Option ... _options")
return ", ".join(params)
def arguments(self):
args = []
var = False
for type, name in self.fields:
if OPTIONS.has_key(name):
var = True
else:
args.append(name)
if var:
args.append("_options")
return ", ".join(args)
CLASSES = {"file": False, "basic": False, "stream": False, "tunnel": False}
FIELDS = {"ticket": False}
opts = Output(out_dir, out_pkg, "Option")
opts.line("public enum Option {")
structs = []
for m in spec.query["amqp/class/method",
lambda m: CLASSES.get(m.parent["@name"], True)]:
struct = Struct(int(m.parent["@index"])*256 + int(m["@index"]),
camel(0, m.parent["@name"], m["@name"]))
for f in m.query["field", lambda f: FIELDS.get(f["@name"], True)]:
type = resolve(f["@domain"])
name = camel(1, f["@name"])
struct.field(type, name)
if type == "bit":
opt_name = scream(f["@name"])
if not OPTIONS.has_key(name):
OPTIONS[name] = opt_name
opts.line(" %s," % opt_name)
structs.append(struct)
opts.line("}")
opts.write()
for s in structs:
out = Output(out_dir, out_pkg, s.name)
s.interface(out)
out.write()
iout = Output(out_dir, out_pkg, s.name + isfx)
s.impl(iout)
iout.write()
fct = Output(out_dir, out_pkg, "StructFactory")
fct.line("public interface StructFactory {")
fct.line(" Struct create(int type, Decoder dec);")
for s in structs:
fct.line()
fct.line(" %s new%s(Decoder dec);" % (s.name, s.name))
fct.line(" %s new%s(%s);" % (s.name, s.name, s.parameters()))
fct.line("}")
fct.write()
ifct_name = "StructFactory%s" % isfx
ifct = Output(out_dir, out_pkg, ifct_name)
ifct.line("class %s implements StructFactory {" % ifct_name)
ifct.line(" public Struct create(int type, Decoder dec) {")
ifct.line(" switch (type) {")
for s in structs:
ifct.line(" case %s.TYPE:" % s.name)
ifct.line(" return new %s%s(dec);" % (s.name, isfx))
ifct.line(" default:")
ifct.line(' throw new IllegalArgumentException("type: " + type);')
ifct.line(" }")
ifct.line(" }")
for s in structs:
ifct.line(" public %s new%s(Decoder dec) {" % (s.name, s.name))
ifct.line(" return new %s%s(dec);" % (s.name, isfx))
ifct.line(" }")
ifct.line(" public %s new%s(%s) {" % (s.name, s.name, s.parameters()))
ifct.line(" return new %s%s(%s);" % (s.name, isfx, s.arguments()))
ifct.line(" }")
ifct.line("}");
ifct.write()
dlg = Output(out_dir, out_pkg, "Delegate")
dlg.line("public abstract class Delegate<C> {")
for s in structs:
dlg.line(" public void %s(C context, %s struct) {}" %
(dromedary(s.name), s.name))
dlg.line("}")
dlg.write()
inv = Output(out_dir, out_pkg, "Invoker")
inv.line("public abstract class Invoker {")
inv.line()
inv.line(" protected abstract void invoke(Method method);")
inv.line(" protected abstract void invoke(Method method, Handler<Struct> handler);")
inv.line(" protected abstract StructFactory getFactory();")
inv.line()
for s in structs:
dname = dromedary(s.name)
inv.line(" public void %s(%s) {" % (dname, s.parameters()))
inv.line(" invoke(getFactory().new%s(%s));" % (s.name, s.arguments()))
inv.line(" }")
inv.line("}")
inv.write()
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