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Backed out changeset 30bd1b29ac64 for having the wrong commit message DONTBUILD
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David Zbarsky
parent
9d435656ac
commit
beaeb93396
@ -770,9 +770,7 @@ def UnionTypes(descriptors, dictionaries, callbacks, config):
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unionStructs[name] = CGUnionStruct(t, providers[0])
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# Unions cannot contain JSObject*.
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if not any(member.isObject() or member.isSpiderMonkeyInterface() for member in t.flatMemberTypes):
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unionReturnValues[name] = CGUnionStruct(t,
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providers[0],
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isReturnValue=True)
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unionReturnValues[name] = CGUnionReturnValueStruct(t, providers[0])
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for f in t.flatMemberTypes:
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f = f.unroll()
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@ -6030,11 +6028,169 @@ def mapTemplate(template, templateVarArray):
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templateVarArray)
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class CGUnionStruct(CGThing):
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def __init__(self, type, descriptorProvider, isReturnValue=False):
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def __init__(self, type, descriptorProvider):
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CGThing.__init__(self)
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self.type = type.unroll()
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self.descriptorProvider = descriptorProvider
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self.templateVars = map(
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lambda t: getUnionTypeTemplateVars(self.type, t, self.descriptorProvider),
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self.type.flatMemberTypes)
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def declare(self):
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templateVars = self.templateVars
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callDestructors = []
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enumValues = []
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methods = []
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if self.type.hasNullableType:
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callDestructors.append(" case eNull:\n"
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" break;")
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enumValues.append("eNull")
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methods.append(""" bool IsNull() const
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{
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return mType == eNull;
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}""")
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destructorTemplate = """ void Destroy${name}()
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{
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MOZ_ASSERT(Is${name}(), "Wrong type!");
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mValue.m${name}.Destroy();
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mType = eUninitialized;
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}"""
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destructors = mapTemplate(destructorTemplate, templateVars)
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callDestructors.extend(mapTemplate(" case e${name}:\n"
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" Destroy${name}();\n"
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" break;", templateVars))
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enumValues.extend(mapTemplate("e${name}", templateVars))
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methodTemplate = """ bool Is${name}() const
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{
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return mType == e${name};
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}
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${externalType} GetAs${name}() const
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{
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MOZ_ASSERT(Is${name}(), "Wrong type!");
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return const_cast<${structType}&>(mValue.m${name}.Value());
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}"""
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methods.extend(mapTemplate(methodTemplate, templateVars))
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# Now have to be careful: we do not want the SetAsObject() method!
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setterTemplate = """ ${structType}& SetAs${name}()
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{
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mType = e${name};
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return mValue.m${name}.SetValue();
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}"""
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methods.extend(mapTemplate(setterTemplate,
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filter(lambda v: v["name"] != "Object",
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templateVars)))
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values = mapTemplate("UnionMember<${structType} > m${name};", templateVars)
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return string.Template("""
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class ${structName} {
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public:
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${structName}() : mType(eUninitialized)
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{
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}
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~${structName}()
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{
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switch (mType) {
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${callDestructors}
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case eUninitialized:
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break;
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}
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}
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${methods}
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bool ToJSVal(JSContext* cx, JS::Handle<JSObject*> scopeObj,
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JS::MutableHandle<JS::Value> rval) const;
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private:
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friend class ${structName}Argument;
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// Disallow copy-construction and assignment
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${structName}(const ${structName}&) MOZ_DELETE;
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void operator=(const ${structName}&) MOZ_DELETE;
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${destructors}
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enum Type {
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eUninitialized,
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${enumValues}
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};
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union Value {
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${values}
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};
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Type mType;
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Value mValue;
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};
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""").substitute(
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{
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"structName": self.type.__str__(),
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"callDestructors": "\n".join(callDestructors),
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"destructors": "\n".join(destructors),
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"methods": "\n\n".join(methods),
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"enumValues": ",\n ".join(enumValues),
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"values": "\n ".join(values)
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})
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def define(self):
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templateVars = self.templateVars
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conversionsToJS = []
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if self.type.hasNullableType:
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conversionsToJS.append(" case eNull:\n"
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" {\n"
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" rval.setNull();\n"
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" return true;\n"
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" }")
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conversionsToJS.extend(
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map(self.getConversionToJS,
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zip(templateVars, self.type.flatMemberTypes)))
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return string.Template("""bool
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${structName}::ToJSVal(JSContext* cx, JS::Handle<JSObject*> scopeObj,
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JS::MutableHandle<JS::Value> rval) const
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{
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switch (mType) {
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${doConversionsToJS}
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case eUninitialized:
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{
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break;
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}
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}
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return false;
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}
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""").substitute({
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"structName": str(self.type),
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"doConversionsToJS": "\n\n".join(conversionsToJS)
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})
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def getConversionToJS(self, arg):
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(templateVars, type) = arg
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assert not type.nullable() # flatMemberTypes never has nullable types
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val = "mValue.m%(name)s.Value()" % templateVars
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wrapCode = wrapForType(
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type, self.descriptorProvider,
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{
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"jsvalRef": "rval",
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"jsvalHandle": "rval",
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"obj": "scopeObj",
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"result": val,
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"typedArraysAreStructs": True
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})
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return CGIndenter(CGList([CGGeneric("case e%(name)s:" % templateVars),
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CGWrapper(CGIndenter(CGGeneric(wrapCode)),
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pre="{\n",
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post="\n}")],
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"\n"),
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4).define()
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class CGUnionReturnValueStruct(CGThing):
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def __init__(self, type, descriptorProvider):
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CGThing.__init__(self)
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self.type = type.unroll()
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self.descriptorProvider = descriptorProvider
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self.isReturnValue = isReturnValue
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self.struct = self.getStruct()
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def declare(self):
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@ -6067,44 +6223,13 @@ class CGUnionStruct(CGThing):
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for t in self.type.flatMemberTypes:
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vars = getUnionTypeTemplateVars(self.type,
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t, self.descriptorProvider,
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isReturnValue=self.isReturnValue)
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if vars["name"] != "Object":
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body=string.Template("mType = e${name};\n"
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"return mValue.m${name}.SetValue();").substitute(vars)
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# bodyInHeader must be false for return values because they own
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# their union members and we don't want include headers in
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# UnionTypes.h just to call Addref/Release
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methods.append(ClassMethod("SetAs" + vars["name"],
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vars["structType"] + "&",
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[],
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bodyInHeader=not self.isReturnValue,
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body=body))
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body = string.Template('MOZ_ASSERT(Is${name}(), "Wrong type!");\n'
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'mValue.m${name}.Destroy();\n'
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'mType = eUninitialized;').substitute(vars)
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methods.append(ClassMethod("Destroy" + vars["name"],
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"void",
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t, self.descriptorProvider, isReturnValue=True)
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body=string.Template("mType = e${name};\n"
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"return mValue.m${name}.SetValue();").substitute(vars)
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methods.append(ClassMethod("SetAs" + vars["name"],
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vars["structType"] + "&",
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[],
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visibility="private",
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bodyInHeader=not self.isReturnValue,
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body=body))
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body = string.Template("return mType == e${name};").substitute(vars)
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methods.append(ClassMethod("Is" + vars["name"],
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"bool",
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[],
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const=True,
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bodyInHeader=True,
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body=body))
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if not self.isReturnValue:
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body = string.Template('MOZ_ASSERT(Is${name}(), "Wrong type!");\n'
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'return const_cast<${structType}&>(mValue.m${name}.Value());').substitute(vars)
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methods.append(ClassMethod("GetAs" + vars["name"],
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vars["externalType"],
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[],
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const=True,
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bodyInHeader=True,
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body=body))
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unionValues.append(string.Template("UnionMember<${structType} > "
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"m${name}").substitute(vars))
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enumValues.append("e" + vars["name"])
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@ -6112,7 +6237,8 @@ class CGUnionStruct(CGThing):
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toJSValCases.append(CGCase("e" + vars["name"],
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self.getConversionToJS(vars, t)))
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destructorCases.append(CGCase("e" + vars["name"],
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CGGeneric("Destroy%s();"
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CGGeneric("mValue.m%s.Destroy();\n"
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"mType = eUninitialized;"
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% vars["name"])))
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dtor = CGSwitch("mType", destructorCases).define()
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@ -6124,16 +6250,12 @@ class CGUnionStruct(CGThing):
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], body=CGSwitch("mType", toJSValCases,
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default=CGGeneric("return false;")).define(), const=True))
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friend=" friend class %sArgument;\n" % str(self.type) if not self.isReturnValue else ""
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return CGClass(str(self.type) + ("ReturnValue" if self.isReturnValue else ""),
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return CGClass(self.type.__str__() + "ReturnValue",
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members=members,
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constructors=[ctor],
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methods=methods,
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disallowCopyConstruction=True,
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extradeclarations=friend,
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destructor=ClassDestructor(visibility="public",
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body=dtor,
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bodyInHeader=not self.isReturnValue),
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destructor=ClassDestructor(visibility="public", body=dtor),
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enums=[ClassEnum("Type", enumValues, visibility="private")],
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unions=[ClassUnion("Value", unionValues, visibility="private")])
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@ -6147,7 +6269,6 @@ class CGUnionStruct(CGThing):
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"jsvalHandle": "rval",
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"obj": "scopeObj",
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"result": val,
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"typedArraysAreStructs": True
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})
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return CGGeneric(wrapCode)
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