The Tor Browser: js/xpconnect/src/event_impl_gen.py@6474c204b198 (annotated)

js/xpconnect/src/event_impl_gen.py@6474c204b198 (annotated)

js/xpconnect/src/event_impl_gen.py

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rwxr-xr-x

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 #!/usr/bin/env python
 # header.py - Generate C++ header files from IDL.
 #
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 import sys, os, xpidl, makeutils
 def strip_end(text, suffix):
     if not text.endswith(suffix):
         return text
     return text[:-len(suffix)]
 def findIDL(includePath, interfaceFileName):
     for d in includePath:
         # Not os.path.join: we need a forward slash even on Windows because
         # this filename ends up in makedepend output.
         path = d + '/' + interfaceFileName
         if os.path.exists(path):
             return path
     raise BaseException("No IDL file found for interface %s "
                         "in include path %r"
                         % (interfaceFileName, includePath))
 eventFileNameToIdl = {};
 def loadIDL(parser, includePath, filename):
     global eventFileNameToIdl
     if filename in eventFileNameToIdl:
         return eventFileNameToIdl[filename]
     idlFile = findIDL(includePath, filename)
     if not idlFile in makeutils.dependencies:
         makeutils.dependencies.append(idlFile)
     idl = p.parse(open(idlFile).read(), idlFile)
     idl.resolve(includePath, p)
     eventFileNameToIdl[filename] = idl
     return idl
 def loadEventIDL(parser, includePath, eventname):
     eventidl = ("nsIDOM%s.idl" % eventname)
     return loadIDL(parser, includePath, eventidl)
 class Configuration:
     def __init__(self, filename):
         config = {}
         execfile(filename, config)
         self.simple_events = config.get('simple_events', [])
         self.special_includes = config.get('special_includes', [])
         self.exclude_automatic_type_include = config.get('exclude_automatic_type_include', [])
         self.xpidl_to_native = config.get('xpidl_to_native', [])
 def readConfigFile(filename):
     return Configuration(filename)
 def firstCap(str):
     return str[0].upper() + str[1:]
 def getBaseName(iface):
     return ("%s" % iface.base[6:])
 def print_header_file(fd, conf):
     fd.write("#ifndef _gen_mozilla_idl_generated_events_h_\n"
              "#define _gen_mozilla_idl_generated_events_h_\n\n")
     fd.write("/* THIS FILE IS AUTOGENERATED - DO NOT EDIT */\n")
     fd.write("#include \"nscore.h\"\n")
     fd.write("class nsIDOMEvent;\n")
     fd.write("class nsPresContext;\n")
     fd.write("namespace mozilla {\n");
     fd.write("class WidgetEvent;\n")
     fd.write("namespace dom {\n");
     fd.write("class EventTarget;\n")
     fd.write("}\n");
     fd.write("}\n\n");
     for e in conf.simple_events:
         fd.write("nsresult\n")
         fd.write("NS_NewDOM%s(nsIDOMEvent** aInstance, " % e)
         fd.write("mozilla::dom::EventTarget* aOwner, ")
         fd.write("nsPresContext* aPresContext, mozilla::WidgetEvent* aEvent);\n")
     fd.write("\n#endif\n")
 def print_classes_file(fd, conf):
     fd.write("#ifndef _gen_mozilla_idl_generated_event_declarations_h_\n")
     fd.write("#define _gen_mozilla_idl_generated_event_declarations_h_\n\n")
     fd.write("#include \"mozilla/dom/Event.h\"\n");
     includes = []
     for s in conf.special_includes:
         if not s in includes:
             includes.append(strip_end(s, ".h"))
     for e in conf.simple_events:
         if not e in includes:
             includes.append(("nsIDOM%s" % e))
     attrnames = []
     for e in conf.simple_events:
         idl = loadEventIDL(p, options.incdirs, e)
         collect_names_and_non_primitive_attribute_types(idl, attrnames, includes)
     for c in includes:
       if not c in conf.exclude_automatic_type_include:
             fd.write("#include \"%s.h\"\n" % c)
     for e in conf.simple_events:
         fd.write('#include "mozilla/dom/%sBinding.h"\n' % e);
     fd.write("namespace mozilla {\n")
     fd.write("namespace dom {\n")
     for e in conf.simple_events:
         idl = loadEventIDL(p, options.incdirs, e)
         for pr in idl.productions:
             if pr.kind == 'interface':
                 print_class_declaration(e, pr, fd, conf)
     fd.write("} // namespace dom\n")
     fd.write("} // namespace mozilla\n\n")
     fd.write("#endif\n");
 def print_class_declaration(eventname, iface, fd, conf):
     classname = ("%s" % eventname)
     basename = getBaseName(iface)
     attributes = []
     ccattributes = []
     for member in iface.members:
         if isinstance(member, xpidl.Attribute):
             attributes.append(member)
             if (member.realtype.nativeType('in').endswith('*')):
                 ccattributes.append(member);
     baseinterfaces = []
     baseiface = iface.idl.getName(iface.base, iface.location)
     while baseiface.name != "nsIDOMEvent":
         baseinterfaces.append(baseiface)
         baseiface = baseiface.idl.getName(baseiface.base, baseiface.location)
     baseinterfaces.reverse()
     allattributes = []
     for baseiface in baseinterfaces:
         for member in baseiface.members:
             if isinstance(member, xpidl.Attribute):
                 allattributes.append(member)
     allattributes.extend(attributes);
     fd.write("\nclass %s MOZ_FINAL : public %s, public %s\n" % (classname, basename, iface.name))
     fd.write("{\n")
     fd.write("public:\n")
     fd.write("  %s(mozilla::dom::EventTarget* aOwner, " % classname)
     fd.write("nsPresContext* aPresContext = nullptr, mozilla::WidgetEvent* aEvent = nullptr);\n");
     fd.write("  virtual ~%s();\n\n" % classname)
     fd.write("  NS_DECL_ISUPPORTS_INHERITED\n")
     fd.write("  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(%s, %s)\n" % (classname, basename))
     fd.write("  NS_FORWARD_TO_EVENT\n")
     for baseiface in baseinterfaces:
         baseimpl = ("%s" % baseiface.name[6:])
         fd.write("  NS_FORWARD_%s(%s::)\n" % (baseiface.name.upper(), baseimpl))
     fd.write("  NS_DECL_%s\n" % iface.name.upper())
     hasVariant = False
     for a in allattributes:
         if a.type == "nsIVariant":
             hasVariant = True
             break;
     fd.write("  static already_AddRefed<%s> Constructor(const GlobalObject& aGlobal, " % eventname)
     if hasVariant:
         fd.write("JSContext* aCx, ")
     fd.write("const nsAString& aType, ")
     fd.write("const %sInit& aParam, " % eventname)
     fd.write("ErrorResult& aRv);\n\n")
     fd.write("  virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE\n")
     fd.write("  {\n")
     fd.write("    return mozilla::dom::%sBinding::Wrap(aCx, this);\n" % eventname)
     fd.write("  }\n\n")
     for a in attributes:
         """xpidl methods take care of string member variables!"""
         firstCapName = firstCap(a.name)
         cleanNativeType = a.realtype.nativeType('in').strip('* ')
         if a.realtype.nativeType('in').count("nsAString"):
             continue
         elif a.realtype.nativeType('in').count("nsIVariant"):
             fd.write("  void Get%s(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval, ErrorResult& aRv);\n\n" % firstCapName);
         elif a.realtype.nativeType('in').endswith('*'):
             fd.write("  already_AddRefed<%s> Get%s()\n" % (xpidl_to_native(cleanNativeType, conf), firstCapName))
             fd.write("  {\n");
             fd.write("    nsCOMPtr<%s> %s = do_QueryInterface(m%s);\n" % (xpidl_to_canonical(cleanNativeType, conf), a.name, firstCapName))
             fd.write("    return %s.forget().downcast<%s>();\n" % (a.name, xpidl_to_native(cleanNativeType, conf)))
             fd.write("  }\n\n");
         else:
             fd.write("  %s %s()\n" % (cleanNativeType, firstCapName))
             fd.write("  {\n");
             fd.write("    return m%s;\n" % firstCapName)
             fd.write("  }\n\n");
     fd.write("  void ")
     fd.write("Init%s(" % eventname)
     if hasVariant:
         fd.write("JSContext* aCx, ")
     fd.write("const nsAString& aType, bool aCanBubble, bool aCancelable")
     for a in allattributes:
         writeNativeAttributeParams(fd, a, conf)
     fd.write(", ErrorResult& aRv);\n\n")
     fd.write("protected:\n")
     for a in attributes:
         fd.write("  %s\n" % attributeVariableTypeAndName(a))
     fd.write("};\n")
 def collect_names_and_non_primitive_attribute_types(idl, attrnames, forwards):
     for p in idl.productions:
         if p.kind == 'interface' or p.kind == 'dictionary':
             interfaces = []
             base = p.base
             baseiface = p
             while base is not None:
                 baseiface = baseiface.idl.getName(baseiface.base, baseiface.location)
                 interfaces.append(baseiface)
                 base = baseiface.base
             interfaces.reverse()
             interfaces.append(p)
             for iface in interfaces:
                 collect_names_and_non_primitive_attribute_types_from_interface(iface, attrnames, forwards)
 def collect_names_and_non_primitive_attribute_types_from_interface(iface, attrnames, forwards):
     for member in iface.members:
         if isinstance(member, xpidl.Attribute):
             if not member.name in attrnames:
                 attrnames.append(member.name)
             if member.realtype.nativeType('in').endswith('*'):
                 t = member.realtype.nativeType('in').strip('* ')
                 if not t in forwards:
                     forwards.append(t)
 def print_cpp(idl, fd, conf, eventname):
     for p in idl.productions:
         if p.kind == 'interface':
             write_cpp(eventname, p, fd, conf)
 def print_cpp_file(fd, conf):
     fd.write("/* THIS FILE IS AUTOGENERATED - DO NOT EDIT */\n\n")
     fd.write('#include "GeneratedEventClasses.h"\n')
     fd.write('#include "xpcprivate.h"\n');
     fd.write('#include "mozilla/dom/Event.h"\n');
     fd.write('#include "mozilla/dom/EventTarget.h"\n');
     for e in conf.simple_events:
         idl = loadEventIDL(p, options.incdirs, e)
         print_cpp(idl, fd, conf, e)
 def init_value(attribute):
     realtype = attribute.realtype.nativeType('in')
     realtype = realtype.strip(' ')
     if realtype.endswith('*'):
         return "nullptr"
     if realtype == "bool":
         return "false"
     if realtype.count("nsAString"):
         return ""
     if realtype.count("nsACString"):
         return ""
     if realtype.count("JS::Value"):
       raise BaseException("JS::Value not supported in simple events!")
     return "0"
 def attributeVariableTypeAndName(a):
     if a.realtype.nativeType('in').endswith('*'):
         l = ["nsCOMPtr<%s> m%s;" % (a.realtype.nativeType('in').strip('* '),
                    firstCap(a.name))]
     elif a.realtype.nativeType('in').count("nsAString"):
         l = ["nsString m%s;" % firstCap(a.name)]
     elif a.realtype.nativeType('in').count("nsACString"):
         l = ["nsCString m%s;" % firstCap(a.name)]
     else:
         l = ["%sm%s;" % (a.realtype.nativeType('in'),
                        firstCap(a.name))]
     return ", ".join(l)
 def writeAttributeGetter(fd, classname, a):
     fd.write("NS_IMETHODIMP\n")
     fd.write("%s::Get%s(" % (classname, firstCap(a.name)))
     if a.realtype.nativeType('in').endswith('*'):
         fd.write("%s** a%s" % (a.realtype.nativeType('in').strip('* '), firstCap(a.name)))
     elif a.realtype.nativeType('in').count("nsAString"):
         fd.write("nsAString& a%s" % firstCap(a.name))
     elif a.realtype.nativeType('in').count("nsACString"):
         fd.write("nsACString& a%s" % firstCap(a.name))
     else:
         fd.write("%s*a%s" % (a.realtype.nativeType('in'), firstCap(a.name)))
     fd.write(")\n");
     fd.write("{\n");
     if a.realtype.nativeType('in').endswith('*'):
         fd.write("  NS_IF_ADDREF(*a%s = m%s);\n" % (firstCap(a.name), firstCap(a.name)))
     elif a.realtype.nativeType('in').count("nsAString"):
         fd.write("  a%s = m%s;\n" % (firstCap(a.name), firstCap(a.name)))
     elif a.realtype.nativeType('in').count("nsACString"):
         fd.write("  a%s = m%s;\n" % (firstCap(a.name), firstCap(a.name)))
     else:
         fd.write("  *a%s = %s();\n" % (firstCap(a.name), firstCap(a.name)))
     fd.write("  return NS_OK;\n");
     fd.write("}\n\n");
     if a.realtype.nativeType('in').count("nsIVariant"):
         fd.write("void\n")
         fd.write("%s::Get%s(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval, ErrorResult& aRv)\n" % (classname, firstCap(a.name)))
         fd.write("{\n")
         fd.write("  nsresult rv = NS_ERROR_UNEXPECTED;\n")
         fd.write("  if (!m%s) {\n" % firstCap(a.name))
         fd.write("    aRetval.setNull();\n")
         fd.write("  } else if (!XPCVariant::VariantDataToJS(m%s, &rv, aRetval)) {\n" % (firstCap(a.name)))
         fd.write("    aRv.Throw(NS_ERROR_FAILURE);\n")
         fd.write("  }\n")
         fd.write("}\n\n")
 def writeAttributeParams(fd, a):
     if a.realtype.nativeType('in').endswith('*'):
         fd.write(", %s* a%s" % (a.realtype.nativeType('in').strip('* '), firstCap(a.name)))
     elif a.realtype.nativeType('in').count("nsAString"):
         fd.write(", const nsAString& a%s" % firstCap(a.name))
     elif a.realtype.nativeType('in').count("nsACString"):
         fd.write(", const nsACString& a%s" % firstCap(a.name))
     else:
         fd.write(", %s a%s" % (a.realtype.nativeType('in'), firstCap(a.name)))
 def writeNativeAttributeParams(fd, a, conf):
     if a.type == "nsIVariant":
         fd.write(", JS::Value a%s" % firstCap(a.name));
     elif a.realtype.nativeType('in').endswith('*'):
         fd.write(", %s* a%s" % (xpidl_to_native(a.realtype.nativeType('in').strip('* '), conf), firstCap(a.name)))
     elif a.realtype.nativeType('in').count("nsAString"):
         fd.write(", const nsAString& a%s" % firstCap(a.name))
     elif a.realtype.nativeType('in').count("nsACString"):
         fd.write(", const nsACString& a%s" % firstCap(a.name))
     else:
         fd.write(", %s a%s" % (a.realtype.nativeType('in'), firstCap(a.name)))
 def write_cpp(eventname, iface, fd, conf):
     classname = ("%s" % eventname)
     basename = getBaseName(iface)
     attributes = []
     ccattributes = []
     for member in iface.members:
         if isinstance(member, xpidl.Attribute):
             attributes.append(member)
             if (member.realtype.nativeType('in').endswith('*')):
                 ccattributes.append(member);
     baseinterfaces = []
     baseiface = iface.idl.getName(iface.base, iface.location)
     while baseiface.name != "nsIDOMEvent":
         baseinterfaces.append(baseiface)
         baseiface = baseiface.idl.getName(baseiface.base, baseiface.location)
     baseinterfaces.reverse()
     baseattributes = []
     for baseiface in baseinterfaces:
         for member in baseiface.members:
             if isinstance(member, xpidl.Attribute):
                 baseattributes.append(member)
     allattributes = []
     allattributes.extend(baseattributes);
     allattributes.extend(attributes);
     fd.write("namespace mozilla {\n")
     fd.write("namespace dom {\n\n")
     fd.write("%s::%s(mozilla::dom::EventTarget* aOwner, " % (classname, classname))
     fd.write("nsPresContext* aPresContext, mozilla::WidgetEvent* aEvent)\n");
     fd.write(": %s(aOwner, aPresContext, aEvent)" % basename)
     for a in attributes:
         fd.write(",\n  m%s(%s)" % (firstCap(a.name), init_value(a)))
     fd.write("\n{\n")
     fd.write("}\n\n")
     fd.write("%s::~%s() {}\n\n" % (classname, classname))
     fd.write("NS_IMPL_CYCLE_COLLECTION_CLASS(%s)\n" % (classname))
     fd.write("NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(%s, %s)\n" % (classname, basename))
     for c in ccattributes:
         fd.write("  NS_IMPL_CYCLE_COLLECTION_UNLINK(m%s)\n" % firstCap(c.name))
     fd.write("NS_IMPL_CYCLE_COLLECTION_UNLINK_END\n\n");
     fd.write("NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(%s, %s)\n" % (classname, basename))
     for c in ccattributes:
         fd.write("  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(m%s)\n" % firstCap(c.name))
     fd.write("NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END\n\n");
     fd.write("NS_IMPL_ADDREF_INHERITED(%s, %s)\n" % (classname, basename))
     fd.write("NS_IMPL_RELEASE_INHERITED(%s, %s)\n\n" % (classname, basename))
     fd.write("NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(%s)\n" % classname)
     fd.write("  NS_INTERFACE_MAP_ENTRY(nsIDOM%s)\n" % eventname)
     fd.write("NS_INTERFACE_MAP_END_INHERITING(%s)\n\n" % basename)
     hasVariant = False
     for a in allattributes:
         if a.type == "nsIVariant":
             hasVariant = True
             break;
     fd.write("already_AddRefed<%s>\n" % eventname)
     fd.write("%s::Constructor(const GlobalObject& aGlobal, " % eventname)
     if hasVariant:
         fd.write("JSContext* aCx, ");
     fd.write("const nsAString& aType, ")
     fd.write("const %sInit& aParam, " % eventname)
     fd.write("ErrorResult& aRv)\n")
     fd.write("{\n")
     fd.write("  nsCOMPtr<mozilla::dom::EventTarget> t = do_QueryInterface(aGlobal.GetAsSupports());\n")
     fd.write("  nsRefPtr<%s> e = new %s(t, nullptr, nullptr);\n" % (eventname, eventname))
     fd.write("  bool trusted = e->Init(t);\n")
     fd.write("  e->Init%s(" % eventname)
     if hasVariant:
         fd.write("aCx, ");
     fd.write("aType, aParam.mBubbles, aParam.mCancelable")
     for a in allattributes:
         fd.write(", aParam.m%s" % firstCap(a.name))
     fd.write(", aRv);\n")
     fd.write("  e->SetTrusted(trusted);\n")
     fd.write("  return e.forget();\n")
     fd.write("}\n\n")
     fd.write("NS_IMETHODIMP\n")
     fd.write("%s::Init%s(" % (classname, eventname))
     fd.write("const nsAString& aType, bool aCanBubble, bool aCancelable")
     for a in allattributes:
         writeAttributeParams(fd, a)
     fd.write(")\n{\n")
     fd.write("  nsresult rv = %s::Init%s(aType, aCanBubble, aCancelable" % (basename, ("%s" % iface.base[6:])))
     for a in baseattributes:
       fd.write(", a%s" % firstCap(a.name))
     fd.write(");\n");
     fd.write("  NS_ENSURE_SUCCESS(rv, rv);\n")
     for a in attributes:
         if a.realtype.nativeType("in").count("nsAString"):
             fd.write("  if (!m%s.Assign(a%s, fallible_t())) {\n" % (firstCap(a.name), firstCap(a.name)))
             fd.write("    return NS_ERROR_OUT_OF_MEMORY;\n")
             fd.write("  }\n")
         else:
             fd.write("  m%s = a%s;\n" % (firstCap(a.name), firstCap(a.name)))
     fd.write("  return NS_OK;\n")
     fd.write("}\n\n")
     fd.write("void\n")
     fd.write("%s::Init%s(" % (classname, eventname))
     if hasVariant:
         fd.write("JSContext* aCx, ")
     fd.write("const nsAString& aType, bool aCanBubble, bool aCancelable")
     for a in allattributes:
         writeNativeAttributeParams(fd, a, conf)
     fd.write(", ErrorResult& aRv")
     fd.write(")\n")
     fd.write("{\n");
     for a in allattributes:
         if a.type == "nsIVariant":
             fd.write("  nsCOMPtr<nsIVariant> %s = dont_AddRef(XPCVariant::newVariant(aCx, a%s));\n" % (a.name, firstCap(a.name)))
             fd.write("  if (!%s) {\n" % a.name)
             fd.write("    aRv.Throw(NS_ERROR_FAILURE);\n")
             fd.write("    return;\n")
             fd.write("  }\n")
         elif a.realtype.nativeType('in').endswith('*'):
             xpidl_t = a.realtype.nativeType('in').strip('* ')
             native_t = xpidl_to_native(xpidl_t, conf)
             if xpidl_t != native_t:
                 fd.write("  nsCOMPtr<%s> %s = do_QueryInterface(static_cast<%s*>(a%s));\n" % (xpidl_t, a.name, xpidl_to_canonical(xpidl_t, conf), firstCap(a.name)))
     fd.write("  aRv = Init%s(" % classname);
     fd.write("aType, aCanBubble, aCancelable")
     for a in allattributes:
         if a.realtype.nativeType('in').endswith('*'):
             xpidl_t = a.realtype.nativeType('in').strip('* ')
             native_t = xpidl_to_native(xpidl_t, conf)
             if xpidl_t != native_t or a.type == "nsIVariant":
                 fd.write(", %s" % a.name)
                 continue
         fd.write(", a%s" % firstCap(a.name))
     fd.write(");\n}\n\n");
     for a in attributes:
         writeAttributeGetter(fd, classname, a)
     fd.write("} // namespace dom\n")
     fd.write("} // namespace mozilla\n\n")
     fd.write("nsresult\n")
     fd.write("NS_NewDOM%s(nsIDOMEvent** aInstance, "  % eventname)
     fd.write("mozilla::dom::EventTarget* aOwner, nsPresContext* aPresContext = nullptr, mozilla::WidgetEvent* aEvent = nullptr)\n")
     fd.write("{\n")
     fd.write("  mozilla::dom::%s* it = new mozilla::dom::%s(aOwner, aPresContext, aEvent);\n" % (classname, classname))
     fd.write("  NS_ADDREF(it);\n")
     fd.write("  *aInstance = static_cast<mozilla::dom::Event*>(it);\n")
     fd.write("  return NS_OK;\n");
     fd.write("}\n\n")
 def toWebIDLType(attribute, inType=False, onlyInterface=False):
     if attribute.type == "nsIVariant":
         return "any";
     if attribute.type == "nsISupports":
         return "%s%s" % (attribute.type, "" if onlyInterface else "?")
     if attribute.type.count("nsIDOM"):
         return "%s%s" % (attribute.type[6:], "" if onlyInterface else "?")
     if attribute.type.count("nsI"):
         return "%s%s" % (attribute.type[3:], "" if onlyInterface else "?")
     if attribute.realtype.nativeType('in').endswith('*') or attribute.realtype.nativeType('in').count("nsAString"):
         return "%s%s" % (attribute.type, "" if onlyInterface else "?")
     return attribute.type
 def write_webidl(eventname, iface, fd, conf, idl):
     basename = ("%s" % iface.base[6:])
     attributes = []
     ccattributes = []
     consts = []
     hasInit = False
     initMethod = "init%s" % eventname;
     for member in iface.members:
         if isinstance(member, xpidl.Attribute):
             attributes.append(member)
             if (member.realtype.nativeType('in').endswith('*')):
                 ccattributes.append(member);
         elif isinstance(member, xpidl.Method) and member.name == initMethod:
             if not member.noscript and not member.notxpcom:
                 hasInit = True
         elif isinstance(member, xpidl.ConstMember):
             consts.append(member);
         else:
             raise BaseException("Unsupported idl member %s::%s" % (eventname, member.name))
     baseinterfaces = []
     baseiface = iface.idl.getName(iface.base, iface.location)
     while baseiface.name != "nsIDOMEvent":
         baseinterfaces.append(baseiface)
         baseiface = baseiface.idl.getName(baseiface.base, baseiface.location)
     baseinterfaces.reverse()
     allattributes = []
     for baseiface in baseinterfaces:
         for member in baseiface.members:
             if isinstance(member, xpidl.Attribute):
                 allattributes.append(member)
     allattributes.extend(attributes)
     fd.write(
 """/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 """)
     neededInterfaces = []
     for a in attributes:
         if a.realtype.nativeType('in').endswith('*'):
             nativeType = a.realtype.nativeType('in').strip('* ')
             mappingForWebIDL = False
             for xp in conf.xpidl_to_native:
                 if xp[0] == nativeType:
                     mappingForWebIDL = True
                     break;
             if not mappingForWebIDL:
                 webidlType = toWebIDLType(a, False, True)
                 if (not webidlType in neededInterfaces and webidlType != "any"):
                     neededInterfaces.append(webidlType);
     for i in neededInterfaces:
         fd.write("interface %s;\n" % i)
     fd.write("\n");
     fd.write("[Constructor(DOMString type, optional %sInit eventInitDict), HeaderFile=\"GeneratedEventClasses.h\"]\n" % eventname);
     fd.write("interface %s : %s\n" % (eventname, basename))
     fd.write("{\n")
     for c in consts:
         fd.write("  const %s %s = %s;\n" % (c.type, c.name, c.getValue()))
     if len(consts):
         fd.write("\n")
     for a in attributes:
         if a.realtype.nativeType('in').count("nsIVariant"):
             fd.write("  [Throws]\n")
             fd.write("  readonly attribute %s %s;\n" % (toWebIDLType(a), a.name))
         elif a.realtype.nativeType('in').endswith('*') or a.realtype.nativeType('in').count("nsAString"):
             fd.write("  readonly attribute %s %s;\n" % (toWebIDLType(a), a.name))
         else:
             fd.write("  readonly attribute %s %s;\n" % (a.type, a.name))
     if hasInit:
         fd.write("\n  [Throws]\n")
         m = "  void %s(" % initMethod
         fd.write(m)
         indent = "".join(" " for i in range(len(m)))
         indent = ",\n%s" % indent
         fd.write("DOMString type")
         fd.write(indent);
         fd.write("boolean canBubble")
         fd.write(indent);
         fd.write("boolean cancelable")
         for a in baseattributes + attributes:
             fd.write(indent);
             fd.write("%s %s" % (toWebIDLType(a, True), a.name))
         fd.write(");\n");
     fd.write("};\n\n")
     dname = "%sInit" % eventname
     for p in idl.productions:
         if p.kind == "dictionary" and p.name == dname:
             fd.write("dictionary %s : %sInit\n" % (dname, basename))
             fd.write("{\n")
             # We want to keep the same ordering what interface has.
             for ifaceattribute in attributes:
                 for member in p.members:
                     if member.name == ifaceattribute.name:
                         a = member
                         if a.realtype.nativeType('in').endswith('*'):
                             fd.write("  %s %s = null;\n" % (toWebIDLType(a, True), a.name))
                         elif a.realtype.nativeType('in').count("nsAString"):
                             if a.defvalue is None:
                                 if a.nullable:
                                     fd.write("  %s? %s = null;\n" % (a.type, a.name))
                                 else:
                                     fd.write("  %s %s = \"\";\n" % (a.type, a.name))
                             else:
                                 if a.nullable:
                                     fd.write("  %s? %s = \"%s\";\n" % (a.type, a.name, a.defvalue))
                                 else:
                                     fd.write("  %s %s = \"%s\";\n" % (a.type, a.name, a.defvalue))
                         else:
                             if a.defvalue is None:
                                 if a.type == "boolean":
                                     fd.write("  %s %s = false;\n" % (a.type, a.name))
                                 else:
                                     fd.write("  %s %s = 0;\n" % (a.type, a.name))
                             # Infinity is not supported by all the types, but
                             # WebIDL parser will then complain about the wrong values.
                             elif a.defvalue == "Infinity":
                                 fd.write("  unrestricted %s %s = Infinity;\n" % (a.type, a.name))
                             elif a.defvalue == "-Infinity":
                                 fd.write("  unrestricted %s %s = -Infinity;\n" % (a.type, a.name))
                             else:
                                 fd.write("  %s %s = %s;\n" % (a.type, a.name, a.defvalue))
                     continue
             fd.write("};\n")
             return
     # There is no dictionary defined in the .idl file. Generate one based on
     # the interface.
     fd.write("dictionary %s : %sInit\n" % (dname, basename))
     fd.write("{\n")
     for a in attributes:
         if a.realtype.nativeType('in').endswith('*'):
             fd.write("  %s %s = null;\n" % (toWebIDLType(a, True), a.name))
         elif a.realtype.nativeType('in').count("nsAString"):
             fd.write("  %s? %s = \"\";\n" % (a.type, a.name))
         elif a.type == "boolean":
             fd.write("  %s %s = false;\n" % (a.type, a.name))
         else:
             fd.write("  %s %s = 0;\n" % (a.type, a.name))
     fd.write("};\n")
 def print_webidl_file(idl, fd, conf, eventname):
     for p in idl.productions:
         if p.kind == 'interface':
             write_webidl(eventname, p, fd, conf, idl)
 def xpidl_to_native(xpidl, conf):
     for x in conf.xpidl_to_native:
         if x[0] == xpidl:
             return x[1]
     return xpidl
 def xpidl_to_canonical(xpidl, conf):
     for x in conf.xpidl_to_native:
         if x[0] == xpidl:
             return x[2]
     return xpidl
 def native_to_xpidl(native, conf):
     for x in conf.xpidl_to_native:
         if x[1] == native:
             return x[0]
     return native
 def print_webidl_files(webidlDir, conf):
     for e in conf.simple_events:
         idl = loadEventIDL(p, options.incdirs, e)
         webidl = "%s/%s.webidl" % (webidlDir, e)
         if not os.path.exists(webidl):
             fd = open(webidl, 'w')
             print_webidl_file(idl, fd, conf, e)
             fd.close();
 if __name__ == '__main__':
     from optparse import OptionParser
     o = OptionParser(usage="usage: %prog [options] configfile")
     o.add_option('-I', action='append', dest='incdirs', default=['.'],
                  help="Directory to search for imported files")
     o.add_option('-o', "--stub-output",
                  type='string', dest='stub_output', default=None,
                  help="Quick stub C++ source output file", metavar="FILE")
     o.add_option('--header-output', type='string', default=None,
                  help="Quick stub header output file", metavar="FILE")
     o.add_option('--makedepend-output', type='string', default=None,
                  help="gnumake dependencies output file", metavar="FILE")
     o.add_option('--cachedir', dest='cachedir', default=None,
                  help="Directory in which to cache lex/parse tables.")
     o.add_option('--class-declarations', type='string', default=None,
                  help="Class declarations", metavar="FILE")
     o.add_option('--webidltarget', dest='webidltarget', default=None,
                  help="Directory in which to store generated WebIDL files.")
     (options, filenames) = o.parse_args()
     if len(filenames) != 1:
         o.error("Exactly one config filename is needed.")
     filename = filenames[0]
     if options.cachedir is not None:
         if not os.path.isdir(options.cachedir):
             os.mkdir(options.cachedir)
         sys.path.append(options.cachedir)
     # Instantiate the parser.
     p = xpidl.IDLParser(outputdir=options.cachedir)
     conf = readConfigFile(filename)
     if options.header_output is not None:
         outfd = open(options.header_output, 'w')
         print_header_file(outfd, conf)
         outfd.close()
     if options.class_declarations is not None:
         outfd = open(options.class_declarations, 'w')
         print_classes_file(outfd, conf)
         outfd.close()
     if options.stub_output is not None:
         makeutils.targets.append(options.stub_output)
         outfd = open(options.stub_output, 'w')
         print_cpp_file(outfd, conf)
         outfd.close()
         if options.makedepend_output is not None:
             makeutils.writeMakeDependOutput(options.makedepend_output)
     if options.webidltarget is not None:
         print_webidl_files(options.webidltarget, conf)

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js/xpconnect/src/event_impl_gen.py@6474c204b198 (annotated)

js/xpconnect/src/event_impl_gen.py