nsresult
nsXBLProtoImplMethod::CompileMember(nsIScriptContext* aContext, const nsCString& aClassStr,
JSObject* aClassObject)
{
NS_TIME_FUNCTION_MIN(5);
NS_PRECONDITION(!IsCompiled(),
"Trying to compile an already-compiled method");
NS_PRECONDITION(aClassObject,
"Must have class object to compile");
nsXBLUncompiledMethod* uncompiledMethod = GetUncompiledMethod();
// No parameters or body was supplied, so don't install method.
if (!uncompiledMethod) {
// Early return after which we consider ourselves compiled.
mJSMethodObject = nsnull;
return NS_OK;
}
// Don't install method if no name was supplied.
if (!mName) {
delete uncompiledMethod;
// Early return after which we consider ourselves compiled.
mJSMethodObject = nsnull;
return NS_OK;
}
// We have a method.
// Allocate an array for our arguments.
PRInt32 paramCount = uncompiledMethod->GetParameterCount();
char** args = nsnull;
if (paramCount > 0) {
args = new char*[paramCount];
if (!args)
return NS_ERROR_OUT_OF_MEMORY;
// Add our parameters to our args array.
PRInt32 argPos = 0;
for (nsXBLParameter* curr = uncompiledMethod->mParameters;
curr;
curr = curr->mNext) {
args[argPos] = curr->mName;
argPos++;
}
}
// Get the body
nsDependentString body;
PRUnichar *bodyText = uncompiledMethod->mBodyText.GetText();
if (bodyText)
body.Rebind(bodyText);
// Now that we have a body and args, compile the function
// and then define it.
NS_ConvertUTF16toUTF8 cname(mName);
nsCAutoString functionUri(aClassStr);
PRInt32 hash = functionUri.RFindChar('#');
if (hash != kNotFound) {
functionUri.Truncate(hash);
}
JSObject* methodObject = nsnull;
nsresult rv = aContext->CompileFunction(aClassObject,
cname,
paramCount,
const_cast<const char**>(args),
body,
functionUri.get(),
uncompiledMethod->mBodyText.GetLineNumber(),
JSVERSION_LATEST,
true,
&methodObject);
// Destroy our uncompiled method and delete our arg list.
delete uncompiledMethod;
delete [] args;
if (NS_FAILED(rv)) {
SetUncompiledMethod(nsnull);
return rv;
}
mJSMethodObject = methodObject;
return NS_OK;
}
nsresult
nsXBLProtoImplMethod::CompileMember(nsIScriptContext* aContext, const nsCString& aClassStr,
JSObject* aClassObject)
{
NS_PRECONDITION(!IsCompiled(),
"Trying to compile an already-compiled method");
NS_PRECONDITION(aClassObject,
"Must have class object to compile");
nsXBLUncompiledMethod* uncompiledMethod = GetUncompiledMethod();
// No parameters or body was supplied, so don't install method.
if (!uncompiledMethod) {
// Early return after which we consider ourselves compiled.
mJSMethodObject = nullptr;
return NS_OK;
}
// Don't install method if no name was supplied.
if (!mName) {
delete uncompiledMethod;
// Early return after which we consider ourselves compiled.
mJSMethodObject = nullptr;
return NS_OK;
}
// We have a method.
// Allocate an array for our arguments.
int32_t paramCount = uncompiledMethod->GetParameterCount();
char** args = nullptr;
if (paramCount > 0) {
args = new char*[paramCount];
if (!args)
return NS_ERROR_OUT_OF_MEMORY;
// Add our parameters to our args array.
int32_t argPos = 0;
for (nsXBLParameter* curr = uncompiledMethod->mParameters;
curr;
curr = curr->mNext) {
args[argPos] = curr->mName;
argPos++;
}
}
// Get the body
nsDependentString body;
PRUnichar *bodyText = uncompiledMethod->mBodyText.GetText();
if (bodyText)
body.Rebind(bodyText);
// Now that we have a body and args, compile the function
// and then define it.
NS_ConvertUTF16toUTF8 cname(mName);
nsAutoCString functionUri(aClassStr);
int32_t hash = functionUri.RFindChar('#');
if (hash != kNotFound) {
functionUri.Truncate(hash);
}
JSObject* methodObject = nullptr;
JSContext* cx = aContext->GetNativeContext();
JSAutoRequest ar(cx);
JSAutoCompartment ac(cx, aClassObject);
JS::CompileOptions options(cx);
options.setFileAndLine(functionUri.get(),
uncompiledMethod->mBodyText.GetLineNumber())
.setVersion(JSVERSION_LATEST)
.setUserBit(true); // Flag us as XBL
js::RootedObject rootedNull(cx, nullptr); // See bug 781070.
nsresult rv = nsJSUtils::CompileFunction(cx, rootedNull, options, cname,
paramCount,
const_cast<const char**>(args),
body, &methodObject);
// Destroy our uncompiled method and delete our arg list.
delete uncompiledMethod;
delete [] args;
if (NS_FAILED(rv)) {
SetUncompiledMethod(nullptr);
return rv;
}
mJSMethodObject = methodObject;
return NS_OK;
}
