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Bug 779048 part 10. Start using the new callback codegen in argument and return value conversion. r=peterv,smaug

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This commit is contained in:
Boris Zbarsky 2012-11-09 07:43:58 -08:00
parent abdb1e731e
commit 6d7bbe9aed
7 changed files with 105 additions and 52 deletions
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6
content/base/src/WebSocket.h
View File

@ -16,6 +16,7 @@
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/TypedArray.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/EventHandlerBinding.h"
// Need this for BinaryType.
#include "mozilla/dom/WebSocketBinding.h"
@ -50,10 +51,11 @@ namespace dom {
nsresult rv = GetOn##_lowercase(aCx, &val); \
return NS_SUCCEEDED(rv) ? JSVAL_TO_OBJECT(val) : nullptr; \
} \
void SetOn##_lowercase(JSContext* aCx, JSObject* aCallback, \
void SetOn##_lowercase(JSContext* aCx, EventHandlerNonNull* aCallback,\
ErrorResult& aRv) \
{ \
aRv = SetOn##_lowercase(aCx, OBJECT_TO_JSVAL(aCallback)); \
JSObject* callback = aCallback ? aCallback->Callable() : nullptr; \
aRv = SetOn##_lowercase(aCx, JS::ObjectOrNullValue(callback)); \
} \
NS_IMETHOD GetOn##_lowercase(JSContext* cx, JS::Value* aVal); \
NS_IMETHOD SetOn##_lowercase(JSContext* cx, const JS::Value& aVal);

7
content/base/src/nsXMLHttpRequest.h
View File

@ -41,6 +41,7 @@
#include "mozilla/dom/TypedArray.h"
#include "mozilla/dom/XMLHttpRequestBinding.h"
#include "mozilla/dom/XMLHttpRequestUploadBinding.h"
#include "mozilla/dom/EventHandlerBinding.h"
#ifdef Status
/* Xlib headers insist on this for some reason... Nuke it because
@ -60,10 +61,12 @@ class nsIDOMFormData;
nsresult rv = GetOn##_lowercase(aCx, &val); \
return NS_SUCCEEDED(rv) ? JSVAL_TO_OBJECT(val) : nullptr; \
} \
void SetOn##_lowercase(JSContext* aCx, JSObject* aCallback, \
void SetOn##_lowercase(JSContext* aCx, \
mozilla::dom::EventHandlerNonNull* aCallback, \
ErrorResult& aRv) \
{ \
aRv = SetOn##_lowercase(aCx, OBJECT_TO_JSVAL(aCallback)); \
JSObject* callback = aCallback ? aCallback->Callable() : nullptr; \
aRv = SetOn##_lowercase(aCx, JS::ObjectOrNullValue(callback)); \
}
class nsXHREventTarget : public nsDOMEventTargetHelper,

7
dom/base/nsScreen.h
View File

@ -7,6 +7,7 @@
#include "mozilla/Attributes.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/EventHandlerBinding.h"
#include "mozilla/dom/ScreenOrientation.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/Hal.h"
@ -110,10 +111,12 @@ public:
nsresult rv = GetOnmozorientationchange(aCx, &val);
return NS_SUCCEEDED(rv) ? val.toObjectOrNull() : nullptr;
}
void SetOnmozorientationchange(JSContext* aCx, JSObject* aCallback,
void SetOnmozorientationchange(JSContext* aCx,
mozilla::dom::EventHandlerNonNull* aCallback,
ErrorResult& aRv)
{
aRv = SetOnmozorientationchange(aCx, JS::ObjectOrNullValue(aCallback));
JSObject* callback = aCallback ? aCallback->Callable() : nullptr;
aRv = SetOnmozorientationchange(aCx, JS::ObjectOrNullValue(callback));
}
bool MozLockOrientation(const nsAString& aOrientation, ErrorResult& aRv);

107
dom/bindings/Codegen.py
View File

@ -2723,10 +2723,24 @@ for (uint32_t i = 0; i < length; ++i) {
raise TypeError("Can't handle member callbacks; need to sort out "
"rooting issues")
if type.nullable():
declType = CGGeneric("JSObject*")
if descriptorProvider.workers:
if type.nullable():
declType = CGGeneric("JSObject*")
else:
declType = CGGeneric("NonNull<JSObject>")
conversion = " ${declName} = &${val}.toObject();\n"
else:
declType = CGGeneric("NonNull<JSObject>")
name = type.unroll().identifier.name
if type.nullable():
declType = CGGeneric("nsRefPtr<%s>" % name);
else:
declType = CGGeneric("OwningNonNull<%s>" % name)
conversion = (
" bool inited;\n"
" ${declName} = new %s(cx, ${obj}, &${val}.toObject(), &inited);\n"
" if (!inited) {\n"
"%s\n"
" }\n" % (name, CGIndenter(exceptionCodeIndented).define()))
if type.treatNonCallableAsNull():
haveCallable = "JS_ObjectIsCallable(cx, &${val}.toObject())"
@ -2736,15 +2750,15 @@ for (uint32_t i = 0; i < length; ++i) {
assert(isinstance(defaultValue, IDLNullValue))
haveCallable = "${haveValue} && " + haveCallable
template = (
"if (%s) {\n"
" ${declName} = &${val}.toObject();\n"
("if (%s) {\n" % haveCallable) +
conversion +
"} else {\n"
" ${declName} = nullptr;\n"
"}" % haveCallable)
"}")
else:
template = wrapObjectTemplate(
"if (JS_ObjectIsCallable(cx, &${val}.toObject())) {\n"
" ${declName} = &${val}.toObject();\n"
"if (JS_ObjectIsCallable(cx, &${val}.toObject())) {\n" +
conversion +
"} else {\n"
"%s"
"}" % CGIndenter(onFailureNotCallable(failureCode)).define(),
@ -3210,7 +3224,19 @@ if (!%(resultStr)s) {
# See comments in WrapNewBindingObject explaining why we need
# to wrap here.
# NB: setValue(..., True) calls JS_WrapValue(), so is fallible
return (setValue("JS::ObjectOrNullValue(%s)" % result, True), False)
# XXXbz Event handlers are special for now, until we fix their
# storage to store the EventHandlerNonNull*.
if (descriptorProvider.workers or
type.unroll().identifier.name == "EventHandlerNonNull"):
return (setValue("JS::ObjectOrNullValue(%s)" % result, True), False)
wrapCode = (("if (%(result)s) {\n" +
CGIndenter(CGGeneric(setValue(
"JS::ObjectValue(*%(result)s->Callable())", True))).define() +
"} else {\n" +
setValue("JS::NullValue()") +
"}") % { "result": result })
return wrapCode, False
if type.tag() == IDLType.Tags.any:
# See comments in WrapNewBindingObject explaining why we need
@ -3315,7 +3341,7 @@ def infallibleForMember(member, type, descriptorProvider):
return getWrapTemplateForType(type, descriptorProvider, 'result', None,\
memberIsCreator(member), "return false;")[1]
def typeNeedsCx(type, retVal=False):
def typeNeedsCx(type, descriptorProvider, retVal=False):
if type is None:
return False
if type.nullable():
@ -3323,10 +3349,16 @@ def typeNeedsCx(type, retVal=False):
if type.isSequence() or type.isArray():
type = type.inner
if type.isUnion():
return any(typeNeedsCx(t) for t in type.unroll().flatMemberTypes)
return any(typeNeedsCx(t, descriptorProvider) for t in
type.unroll().flatMemberTypes)
if retVal and type.isSpiderMonkeyInterface():
return True
return type.isCallback() or type.isAny() or type.isObject()
if type.isCallback():
# XXXbz Event handlers are special for now, until we fix their
# storage to store the EventHandlerNonNull*.
return (descriptorProvider.workers or
type.unroll().identifier.name == "EventHandlerNonNull")
return type.isAny() or type.isObject()
# Returns a tuple consisting of a CGThing containing the type of the return
# value, or None if there is no need for a return value, and a boolean signaling
@ -3359,9 +3391,12 @@ def getRetvalDeclarationForType(returnType, descriptorProvider,
result = CGWrapper(result, post="*")
return result, False
if returnType.isCallback():
# XXXbz we're going to assume that callback types are always
# nullable for now.
return CGGeneric("JSObject*"), False
name = returnType.unroll().identifier.name
# XXXbz Event handlers are special for now, until we fix their
# storage to store the EventHandlerNonNull*.
if descriptorProvider.workers or name == "EventHandlerNonNull":
return CGGeneric("JSObject*"), False
return CGGeneric("nsRefPtr<%s>" % name), False
if returnType.isAny():
return CGGeneric("JS::Value"), False
if returnType.isObject() or returnType.isSpiderMonkeyInterface():
@ -3393,9 +3428,9 @@ def isResultAlreadyAddRefed(descriptor, extendedAttributes):
# Default to already_AddRefed on the main thread, raw pointer in workers
return not descriptor.workers and not 'resultNotAddRefed' in extendedAttributes
def needCx(returnType, arguments, extendedAttributes):
return (typeNeedsCx(returnType, True) or
any(typeNeedsCx(a.type) for (a, _) in arguments) or
def needCx(returnType, arguments, extendedAttributes, descriptorProvider):
return (typeNeedsCx(returnType, descriptorProvider, True) or
any(typeNeedsCx(a.type, descriptorProvider) for (a, _) in arguments) or
'implicitJSContext' in extendedAttributes)
class CGCallGenerator(CGThing):
@ -3434,7 +3469,8 @@ class CGCallGenerator(CGThing):
if isFallible:
args.append(CGGeneric("rv"))
needsCx = needCx(returnType, arguments, extendedAttributes)
needsCx = needCx(returnType, arguments, extendedAttributes,
descriptorProvider)
if not "cx" in argsPre and needsCx:
args.prepend(CGGeneric("cx"))
@ -4459,9 +4495,15 @@ def getUnionAccessorSignatureType(type, descriptorProvider):
return CGGeneric(type.inner.identifier.name)
if type.isCallback():
if descriptorProvider.workers:
if type.nullable():
return CGGeneric("JSObject*")
return CGGeneric("JSObject&")
if type.nullable():
return CGGeneric("JSObject*")
return CGGeneric("JSObject&")
typeName = "%s*"
else:
typeName = "%s&"
return CGGeneric(typeName % type.unroll().identifier.name)
if type.isAny():
return CGGeneric("JS::Value")
@ -6741,13 +6783,8 @@ class CGNativeMember(ClassMethod):
"return ${declName}.Ptr();")
return result.define(), "nullptr", returnCode
if type.isCallback():
if type.nullable():
returnCode = "return ${declName};"
else:
returnCode = "return ${declName}.Ptr();"
# XXXbz we're going to assume that callback types are always
# nullable for now in our return value.
return "JSObject*", "nullptr", returnCode
return ("already_AddRefed<%s>" % type.unroll().identifier.name,
"nullptr", "return ${declName}.forget();")
if type.isAny():
return "JS::Value", "JS::UndefinedValue()", "return ${declName};"
if type.isObject():
@ -6811,7 +6848,8 @@ class CGNativeMember(ClassMethod):
# And jscontext bits. needCx expects a list of tuples, in each of which
# the first element is the actual argument
if (self.passCxAsNeeded and
needCx(returnType, ((a, "") for a in argList), self.extendedAttrs)):
needCx(returnType, ((a, "") for a in argList), self.extendedAttrs,
self.descriptor)):
args.insert(0, Argument("JSContext*", "cx"))
return args
@ -6885,13 +6923,16 @@ class CGNativeMember(ClassMethod):
if type.isCallback():
if type.nullable():
declType = "JSObject*"
if optional:
declType = "nsRefPtr<%s>"
else:
declType = "%s*"
else:
if optional:
declType = "NonNull<JSObject>"
declType = "OwningNonNull<%s>"
else:
declType = "JSObject&"
return declType, False, False
declType = "%s&"
return declType % type.unroll().identifier.name, False, False
if type.isAny():
return "JS::Value", False, False

22
dom/bindings/test/TestBindingHeader.h
View File

@ -353,16 +353,16 @@ public:
void SetEnumAttribute(TestEnum);
// Callback types
void PassCallback(JSContext*, JSObject&);
void PassNullableCallback(JSContext*, JSObject*);
void PassOptionalCallback(JSContext*, const Optional<NonNull<JSObject> >&);
void PassOptionalNullableCallback(JSContext*, const Optional<JSObject*>&);
void PassOptionalNullableCallbackWithDefaultValue(JSContext*, JSObject*);
JSObject* ReceiveCallback(JSContext*);
JSObject* ReceiveNullableCallback(JSContext*);
void PassNullableTreatAsNullCallback(JSContext*, JSObject*);
void PassOptionalNullableTreatAsNullCallback(JSContext*, const Optional<JSObject*>&);
void PassOptionalNullableTreatAsNullCallbackWithDefaultValue(JSContext*, JSObject*);
void PassCallback(TestCallback&);
void PassNullableCallback(TestCallback*);
void PassOptionalCallback(const Optional<OwningNonNull<TestCallback> >&);
void PassOptionalNullableCallback(const Optional<nsRefPtr<TestCallback> >&);
void PassOptionalNullableCallbackWithDefaultValue(TestCallback*);
already_AddRefed<TestCallback> ReceiveCallback();
already_AddRefed<TestCallback> ReceiveNullableCallback();
void PassNullableTreatAsNullCallback(TestTreatAsNullCallback*);
void PassOptionalNullableTreatAsNullCallback(const Optional<nsRefPtr<TestTreatAsNullCallback> >&);
void PassOptionalNullableTreatAsNullCallbackWithDefaultValue(TestTreatAsNullCallback*);
// Any types
void PassAny(JSContext*, JS::Value);
@ -403,7 +403,7 @@ public:
void PassUnionWithArrayBuffer(const ArrayBufferOrLong&);
void PassUnionWithString(JSContext*, const StringOrObject&);
//void PassUnionWithEnum(JSContext*, const TestEnumOrObject&);
void PassUnionWithCallback(JSContext*, const TestCallbackOrLong&);
//void PassUnionWithCallback(JSContext*, const TestCallbackOrLong&);
void PassUnionWithObject(JSContext*, const ObjectOrLong&);
// binaryNames tests

4
dom/bindings/test/TestCodeGen.webidl
View File

@ -350,7 +350,9 @@ interface TestInterface {
void passUnionWithArrayBuffer((ArrayBuffer or long) arg);
void passUnionWithString((DOMString or object) arg);
//void passUnionWithEnum((TestEnum or object) arg);
void passUnionWithCallback((TestCallback or long) arg);
// Trying to use a callback in a union won't include the test
// headers, unfortunately, so won't compile.
//void passUnionWithCallback((TestCallback or long) arg);
void passUnionWithObject((object or long) arg);
//void passUnionWithDict((Dict or long) arg);

4
dom/bindings/test/TestExampleGen.webidl
View File

@ -271,7 +271,9 @@ interface TestExampleInterface {
void passUnionWithArrayBuffer((ArrayBuffer or long) arg);
void passUnionWithString((DOMString or object) arg);
//void passUnionWithEnum((TestEnum or object) arg);
void passUnionWithCallback((TestCallback or long) arg);
// Trying to use a callback in a union won't include the test
// headers, unfortunately, so won't compile.
// void passUnionWithCallback((TestCallback or long) arg);
void passUnionWithObject((object or long) arg);
//void passUnionWithDict((Dict or long) arg);