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generate-jssink.js
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import { resolve } from "path";
const classes = [
"ArrayBufferSink",
"FileSink",
"HTTPResponseSink",
"HTTPSResponseSink",
];
const SINK_COUNT = 5;
function names(name) {
return {
constructor: `JS${name}Constructor`,
className: `JS${name}`,
controller: `JSReadable${name}Controller`,
controllerName: `Readable${name}Controller`,
prototypeName: `JS${name}Prototype`,
controllerPrototypeName: `JSReadable${name}ControllerPrototype`,
writableStreamSourcePrototype: `JSWritableStreamSource${name}Prototype`,
writableStreamName: `JSWritableStreamSource${name}`,
};
}
function header() {
function classTemplate(name) {
const { constructor, className, controller, writableStreamName } =
names(name);
return `class ${constructor} final : public JSC::InternalFunction {
public:
using Base = JSC::InternalFunction;
static ${constructor}* create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure, JSC::JSObject* prototype);
static constexpr SinkID Sink = SinkID::${name};
static constexpr unsigned StructureFlags = Base::StructureFlags;
static constexpr bool needsDestruction = false;
DECLARE_EXPORT_INFO;
template<typename, JSC::SubspaceAccess mode> static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
{
if constexpr (mode == JSC::SubspaceAccess::Concurrently)
return nullptr;
return WebCore::subspaceForImpl<${constructor}, WebCore::UseCustomHeapCellType::No>(
vm,
[](auto& spaces) { return spaces.m_clientSubspaceForJSSinkConstructor.get(); },
[](auto& spaces, auto&& space) { spaces.m_clientSubspaceForJSSinkConstructor = WTFMove(space); },
[](auto& spaces) { return spaces.m_subspaceForJSSinkConstructor.get(); },
[](auto& spaces, auto&& space) { spaces.m_subspaceForJSSinkConstructor = WTFMove(space); });
}
static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
{
return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::InternalFunctionType, StructureFlags), info());
}
void initializeProperties(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSObject* prototype);
// Must be defined for each specialization class.
static JSC::EncodedJSValue JSC_HOST_CALL_ATTRIBUTES construct(JSC::JSGlobalObject*, JSC::CallFrame*);
private:
${constructor}(JSC::VM& vm, JSC::Structure* structure, JSC::NativeFunction nativeFunction)
: Base(vm, structure, nativeFunction, nativeFunction)
{
}
void finishCreation(JSC::VM&, JSC::JSGlobalObject* globalObject, JSC::JSObject* prototype);
};
class ${className} final : public JSC::JSDestructibleObject {
public:
using Base = JSC::JSDestructibleObject;
static ${className}* create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure, void* sinkPtr);
static constexpr SinkID Sink = SinkID::${name};
DECLARE_EXPORT_INFO;
template<typename, JSC::SubspaceAccess mode> static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
{
if constexpr (mode == JSC::SubspaceAccess::Concurrently)
return nullptr;
return WebCore::subspaceForImpl<${className}, WebCore::UseCustomHeapCellType::No>(
vm,
[](auto& spaces) { return spaces.m_clientSubspaceForJSSink.get(); },
[](auto& spaces, auto&& space) { spaces.m_clientSubspaceForJSSink = WTFMove(space); },
[](auto& spaces) { return spaces.m_subspaceForJSSink.get(); },
[](auto& spaces, auto&& space) { spaces.m_subspaceForJSSink = WTFMove(space); });
}
static void destroy(JSC::JSCell*);
static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
{
return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
}
static JSObject* createPrototype(VM& vm, JSDOMGlobalObject& globalObject);
~${className}();
void* wrapped() const { return m_sinkPtr; }
DECLARE_VISIT_CHILDREN;
void detach() {
m_sinkPtr = nullptr;
}
static void analyzeHeap(JSCell*, JSC::HeapAnalyzer&);
void ref();
void unref();
void* m_sinkPtr;
int m_refCount { 1 };
${className}(JSC::VM& vm, JSC::Structure* structure, void* sinkPtr)
: Base(vm, structure)
{
m_sinkPtr = sinkPtr;
}
void finishCreation(JSC::VM&);
};
class ${controller} final : public JSC::JSDestructibleObject {
public:
using Base = JSC::JSDestructibleObject;
static ${controller}* create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure, void* sinkPtr);
static constexpr SinkID Sink = SinkID::${name};
DECLARE_EXPORT_INFO;
template<typename, JSC::SubspaceAccess mode> static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
{
if constexpr (mode == JSC::SubspaceAccess::Concurrently)
return nullptr;
return WebCore::subspaceForImpl<${controller}, WebCore::UseCustomHeapCellType::No>(
vm,
[](auto& spaces) { return spaces.m_clientSubspaceForJSSinkController.get(); },
[](auto& spaces, auto&& space) { spaces.m_clientSubspaceForJSSinkController = WTFMove(space); },
[](auto& spaces) { return spaces.m_subspaceForJSSinkController.get(); },
[](auto& spaces, auto&& space) { spaces.m_subspaceForJSSinkController = WTFMove(space); });
}
static void destroy(JSC::JSCell*);
static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
{
return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
}
static JSObject* createPrototype(VM& vm, JSDOMGlobalObject& globalObject);
~${controller}();
void* wrapped() const { return m_sinkPtr; }
void detach();
void start(JSC::JSGlobalObject *globalObject, JSC::JSValue readableStream, JSC::JSFunction *onPull, JSC::JSFunction *onClose);
DECLARE_VISIT_CHILDREN;
static void analyzeHeap(JSCell*, JSC::HeapAnalyzer&);
void* m_sinkPtr;
mutable WriteBarrier<JSC::JSFunction> m_onPull;
mutable WriteBarrier<JSC::JSFunction> m_onClose;
mutable JSC::Weak<JSObject> m_weakReadableStream;
${controller}(JSC::VM& vm, JSC::Structure* structure, void* sinkPtr)
: Base(vm, structure)
{
m_sinkPtr = sinkPtr;
}
void finishCreation(JSC::VM&);
};
JSC_DECLARE_CUSTOM_GETTER(function${name}__getter);
`;
}
const outer = `
// AUTO-GENERATED FILE. DO NOT EDIT.
// Generated by 'make generate-sink' at ${new Date().toISOString()}
//
#pragma once
#include "root.h"
#include "JSDOMWrapper.h"
#include "wtf/NeverDestroyed.h"
#include "Sink.h"
extern "C" bool JSSink_isSink(JSC::JSGlobalObject*, JSC::EncodedJSValue);
namespace WebCore {
using namespace JSC;
JSC_DECLARE_HOST_FUNCTION(functionStartDirectStream);
`;
const bottom = `
JSObject* createJSSinkPrototype(JSC::VM& vm, JSC::JSGlobalObject* globalObject, WebCore::SinkID sinkID);
JSObject* createJSSinkControllerPrototype(JSC::VM& vm, JSC::JSGlobalObject* globalObject, WebCore::SinkID sinkID);
Structure* createJSSinkControllerStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, WebCore::SinkID sinkID);
} // namespace WebCore
`;
var templ = outer;
for (let name of classes) {
templ += classTemplate(name) + "\n";
}
templ += bottom;
return templ;
}
async function implementation() {
const head = `
// AUTO-GENERATED FILE. DO NOT EDIT.
// Generated by 'make generate-sink' at ${new Date().toISOString()}
// To regenerate this file, run:
//
// make generate-sink
//
#include "root.h"
#include "headers.h"
#include "JSSink.h"
#include "ActiveDOMObject.h"
#include "ExtendedDOMClientIsoSubspaces.h"
#include "ExtendedDOMIsoSubspaces.h"
#include "IDLTypes.h"
// #include "JSBlob.h"
#include "JSDOMAttribute.h"
#include "JSDOMBinding.h"
#include "JSDOMConstructor.h"
#include "JSDOMConvertBase.h"
#include "JSDOMConvertInterface.h"
#include "JSDOMConvertStrings.h"
#include "JSDOMExceptionHandling.h"
#include "JSDOMGlobalObject.h"
#include "JSDOMGlobalObjectInlines.h"
#include "JSDOMOperation.h"
#include "JSDOMWrapperCache.h"
#include "ScriptExecutionContext.h"
#include "WebCoreJSClientData.h"
#include "JavaScriptCore/FunctionPrototype.h"
#include "JavaScriptCore/HeapAnalyzer.h"
#include "JavaScriptCore/JSDestructibleObjectHeapCellType.h"
#include "JavaScriptCore/SlotVisitorMacros.h"
#include "JavaScriptCore/SubspaceInlines.h"
#include "wtf/GetPtr.h"
#include "wtf/PointerPreparations.h"
#include "wtf/URL.h"
#include "JavaScriptCore/BuiltinNames.h"
#include "JSBufferEncodingType.h"
#include "JSBufferPrototypeBuiltins.h"
#include "JSBufferConstructorBuiltins.h"
#include "JavaScriptCore/JSBase.h"
#if ENABLE(MEDIA_SOURCE)
#include "BufferMediaSource.h"
#include "JSMediaSource.h"
#endif
// #include "JavaScriptCore/JSTypedArrayViewPrototype.h"
#include "JavaScriptCore/JSArrayBufferViewInlines.h"
#include "JSReadableStream.h"
#include "BunClientData.h"
#include "JavaScriptCore/Weak.h"
#include "JavaScriptCore/WeakInlines.h"
namespace WebCore {
using namespace JSC;
JSC_DEFINE_HOST_FUNCTION(functionStartDirectStream, (JSC::JSGlobalObject * lexicalGlobalObject, JSC::CallFrame *callFrame))
{
auto& vm = lexicalGlobalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
Zig::GlobalObject* globalObject = reinterpret_cast<Zig::GlobalObject*>(lexicalGlobalObject);
JSC::JSValue readableStream = callFrame->argument(0);
JSC::JSValue onPull = callFrame->argument(1);
JSC::JSValue onClose = callFrame->argument(2);
if (!readableStream.isObject()) {
scope.throwException(globalObject, JSC::createTypeError(globalObject, "Expected ReadableStream"_s));
return JSC::JSValue::encode(JSC::jsUndefined());
}
if (!onPull.isObject() || !onPull.isCallable()) {
onPull = JSC::jsUndefined();
}
if (!onClose.isObject() || !onClose.isCallable()) {
onClose = JSC::jsUndefined();
}
JSC::JSFunction *onPullFunction = JSC::jsDynamicCast<JSC::JSFunction*>(onPull);
JSC::JSFunction *onCloseFunction = JSC::jsDynamicCast<JSC::JSFunction*>(onClose);
`;
var templ = head;
var isFirst = true;
for (let name of classes) {
const {
className,
controller,
prototypeName,
controllerPrototypeName,
constructor,
} = names(name);
templ += `
${
isFirst ? "" : "else"
} if (WebCore::${controller}* ${name}Controller = JSC::jsDynamicCast<WebCore::${controller}*>(callFrame->thisValue())) {
if (${name}Controller->wrapped() == nullptr) {
scope.throwException(globalObject, JSC::createTypeError(globalObject, "Cannot start stream with closed controller"_s));
return JSC::JSValue::encode(JSC::jsUndefined());
}
${name}Controller->start(globalObject, readableStream, onPullFunction, onCloseFunction);
}
`;
isFirst = false;
}
templ += `
else {
scope.throwException(globalObject, JSC::createTypeError(globalObject, "Unknown direct controller. This is a bug in Bun."_s));
return JSC::JSValue::encode(JSC::jsUndefined());
}
RELEASE_AND_RETURN(scope, JSC::JSValue::encode(JSC::jsUndefined()));
}
`;
for (let name of classes) {
const {
className,
controller,
prototypeName,
controllerName,
controllerPrototypeName,
constructor,
writableStreamName,
writableStreamSourcePrototype,
} = names(name);
const protopad = `${controller}__close`.length;
const padding = `${name}__doClose`.length;
templ += `
void ${className}::ref() {
if (!m_sinkPtr)
return;
m_refCount++;
if (m_refCount == 1) {
${name}__updateRef(m_sinkPtr, true);
}
}
void ${className}::unref() {
if (!m_sinkPtr)
return;
m_refCount = std::max(0, m_refCount - 1);
if (!m_refCount)
{
${name}__updateRef(m_sinkPtr, false);
}
}
JSC_DEFINE_HOST_FUNCTION(${name}__ref, (JSC::JSGlobalObject * lexicalGlobalObject, JSC::CallFrame *callFrame))
{
auto& vm = lexicalGlobalObject->vm();
auto* sink = jsDynamicCast<WebCore::${className}*>(callFrame->thisValue());
if (LIKELY(sink)) {
sink->ref();
}
return JSC::JSValue::encode(JSC::jsUndefined());
}
JSC_DEFINE_HOST_FUNCTION(${name}__unref, (JSC::JSGlobalObject * lexicalGlobalObject, JSC::CallFrame *callFrame))
{
auto& vm = lexicalGlobalObject->vm();
auto* sink = jsDynamicCast<WebCore::${className}*>(callFrame->thisValue());
if (LIKELY(sink)) {
sink->unref();
}
return JSC::JSValue::encode(JSC::jsUndefined());
}
JSC_DEFINE_CUSTOM_GETTER(function${name}__getter, (JSC::JSGlobalObject * lexicalGlobalObject, JSC::EncodedJSValue thisValue, JSC::PropertyName))
{
auto& vm = lexicalGlobalObject->vm();
Zig::GlobalObject* globalObject = reinterpret_cast<Zig::GlobalObject*>(lexicalGlobalObject);
return JSC::JSValue::encode(globalObject->${name}());
}
JSC_DECLARE_HOST_FUNCTION(${controller}__close);
JSC_DEFINE_HOST_FUNCTION(${controller}__close, (JSC::JSGlobalObject * lexicalGlobalObject, JSC::CallFrame *callFrame))
{
auto& vm = lexicalGlobalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
Zig::GlobalObject* globalObject = reinterpret_cast<Zig::GlobalObject*>(lexicalGlobalObject);
WebCore::${controller}* controller = JSC::jsDynamicCast<WebCore::${controller}*>(callFrame->thisValue());
if (!controller) {
scope.throwException(globalObject, JSC::createTypeError(globalObject, "Expected ${controller}"_s));
return JSC::JSValue::encode(JSC::jsUndefined());
}
void *ptr = controller->wrapped();
if (ptr == nullptr) {
return JSC::JSValue::encode(JSC::jsUndefined());
}
controller->detach();
${name}__close(lexicalGlobalObject, ptr);
return JSC::JSValue::encode(JSC::jsUndefined());
}
JSC_DECLARE_HOST_FUNCTION(${controller}__end);
JSC_DEFINE_HOST_FUNCTION(${controller}__end, (JSC::JSGlobalObject * lexicalGlobalObject, JSC::CallFrame *callFrame))
{
auto& vm = lexicalGlobalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
Zig::GlobalObject* globalObject = reinterpret_cast<Zig::GlobalObject*>(lexicalGlobalObject);
WebCore::${controller}* controller = JSC::jsDynamicCast<WebCore::${controller}*>(callFrame->thisValue());
if (!controller) {
scope.throwException(globalObject, JSC::createTypeError(globalObject, "Expected ${controller}"_s));
return JSC::JSValue::encode(JSC::jsUndefined());
}
void *ptr = controller->wrapped();
if (ptr == nullptr) {
return JSC::JSValue::encode(JSC::jsUndefined());
}
controller->detach();
return ${name}__endWithSink(ptr, lexicalGlobalObject);
}
JSC_DECLARE_HOST_FUNCTION(${name}__doClose);
JSC_DEFINE_HOST_FUNCTION(${name}__doClose, (JSC::JSGlobalObject * lexicalGlobalObject, JSC::CallFrame *callFrame))
{
auto& vm = lexicalGlobalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
Zig::GlobalObject* globalObject = reinterpret_cast<Zig::GlobalObject*>(lexicalGlobalObject);
WebCore::${className}* sink = JSC::jsDynamicCast<WebCore::${className}*>(callFrame->thisValue());
if (!sink) {
scope.throwException(globalObject, JSC::createTypeError(globalObject, "Expected ${name}"_s));
return JSC::JSValue::encode(JSC::jsUndefined());
}
void *ptr = sink->wrapped();
if (ptr == nullptr) {
return JSC::JSValue::encode(JSC::jsUndefined());
}
sink->detach();
${name}__close(lexicalGlobalObject, ptr);
return JSC::JSValue::encode(JSC::jsUndefined());
}
`;
}
templ += `
#include "JSSinkLookupTable.h"
`;
for (let name of classes) {
const {
className,
controller,
prototypeName,
controllerName,
controllerPrototypeName,
constructor,
writableStreamSourcePrototype,
writableStreamName,
} = names(name);
const protopad = `${controller}__close`.length;
const padding = `${name}__doClose`.length;
templ += `
/* Source for JS${name}PrototypeTableValues.lut.h
@begin JS${name}PrototypeTable
close ${`${name}__doClose`.padEnd(
padding + 8,
)} ReadOnly|DontDelete|Function 0
flush ${`${name}__flush`.padEnd(
padding + 8,
)} ReadOnly|DontDelete|Function 1
end ${`${name}__end`.padEnd(
padding + 8,
)} ReadOnly|DontDelete|Function 0
start ${`${name}__start`.padEnd(
padding + 8,
)} ReadOnly|DontDelete|Function 1
write ${`${name}__write`.padEnd(
padding + 8,
)} ReadOnly|DontDelete|Function 1
ref ${`${name}__ref`.padEnd(
padding + 8,
)} ReadOnly|DontDelete|Function 0
unref ${`${name}__unref`.padEnd(
padding + 8,
)} ReadOnly|DontDelete|Function 0
@end
*/
/* Source for ${controllerPrototypeName}TableValues.lut.h
@begin ${controllerPrototypeName}Table
close ${`${controller}__close`.padEnd(
protopad + 4,
)} ReadOnly|DontDelete|Function 0
flush ${`${name}__flush`.padEnd(
protopad + 4,
)} ReadOnly|DontDelete|Function 1
end ${`${controller}__end`.padEnd(
protopad + 4,
)} ReadOnly|DontDelete|Function 0
start ${`${name}__start`.padEnd(
protopad + 4,
)} ReadOnly|DontDelete|Function 1
write ${`${name}__write`.padEnd(
protopad + 4,
)} ReadOnly|DontDelete|Function 1
@end
*/
`;
}
const footer = `
} // namespace WebCore
`;
for (let name of classes) {
const {
className,
controller,
prototypeName,
controllerPrototypeName,
constructor,
controllerName,
} = names(name);
templ += `
#pragma mark - ${name}
class ${prototypeName} final : public JSC::JSNonFinalObject {
public:
using Base = JSC::JSNonFinalObject;
static ${prototypeName}* create(JSC::VM& vm, JSGlobalObject* globalObject, JSC::Structure* structure)
{
${prototypeName}* ptr = new (NotNull, JSC::allocateCell<${prototypeName}>(vm)) ${prototypeName}(vm, globalObject, structure);
ptr->finishCreation(vm, globalObject);
return ptr;
}
DECLARE_INFO;
template<typename CellType, JSC::SubspaceAccess>
static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
{
return &vm.plainObjectSpace();
}
static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
{
return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
}
private:
${prototypeName}(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure)
: Base(vm, structure)
{
}
void finishCreation(JSC::VM&, JSC::JSGlobalObject*);
};
STATIC_ASSERT_ISO_SUBSPACE_SHARABLE(${prototypeName}, ${prototypeName}::Base);
class ${controllerPrototypeName} final : public JSC::JSNonFinalObject {
public:
using Base = JSC::JSNonFinalObject;
static ${controllerPrototypeName}* create(JSC::VM& vm, JSGlobalObject* globalObject, JSC::Structure* structure)
{
${controllerPrototypeName}* ptr = new (NotNull, JSC::allocateCell<${controllerPrototypeName}>(vm)) ${controllerPrototypeName}(vm, globalObject, structure);
ptr->finishCreation(vm, globalObject);
return ptr;
}
DECLARE_INFO;
template<typename CellType, JSC::SubspaceAccess>
static JSC::GCClient::IsoSubspace* subspaceFor(JSC::VM& vm)
{
return &vm.plainObjectSpace();
}
static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
{
return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
}
private:
${controllerPrototypeName}(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure)
: Base(vm, structure)
{
}
void finishCreation(JSC::VM&, JSC::JSGlobalObject*);
};
STATIC_ASSERT_ISO_SUBSPACE_SHARABLE(${controllerPrototypeName}, ${controllerPrototypeName}::Base);
const ClassInfo ${prototypeName}::s_info = { "${name}"_s, &Base::s_info, &JS${name}PrototypeTable, nullptr, CREATE_METHOD_TABLE(${prototypeName}) };
const ClassInfo ${className}::s_info = { "${name}"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(${className}) };
const ClassInfo ${constructor}::s_info = { "${name}"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(${constructor}) };
const ClassInfo ${controllerPrototypeName}::s_info = { "${controllerName}"_s, &Base::s_info, &${controllerPrototypeName}Table, nullptr, CREATE_METHOD_TABLE(${controllerPrototypeName}) };
const ClassInfo ${controller}::s_info = { "${controllerName}"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(${controller}) };
${className}::~${className}()
{
if (m_sinkPtr) {
${name}__finalize(m_sinkPtr);
}
}
${controller}::~${controller}()
{
if (m_sinkPtr) {
${name}__finalize(m_sinkPtr);
}
}
JSObject* ${className}::createPrototype(VM& vm, JSDOMGlobalObject& globalObject)
{
return ${prototypeName}::create(vm, &globalObject, ${prototypeName}::createStructure(vm, &globalObject, globalObject.objectPrototype()));
}
JSObject* JS${controllerName}::createPrototype(VM& vm, JSDOMGlobalObject& globalObject)
{
return ${controllerPrototypeName}::create(vm, &globalObject, ${controllerPrototypeName}::createStructure(vm, &globalObject, globalObject.objectPrototype()));
}
void JS${controllerName}::detach() {
m_sinkPtr = nullptr;
m_onPull.clear();
auto readableStream = m_weakReadableStream.get();
auto onClose = m_onClose.get();
m_onClose.clear();
if (readableStream && onClose) {
JSC::JSGlobalObject *globalObject = this->globalObject();
auto callData = JSC::getCallData(onClose);
JSC::MarkedArgumentBuffer arguments;
arguments.append(readableStream);
arguments.append(jsUndefined());
JSC::call(globalObject, onClose, callData, JSC::jsUndefined(), arguments);
}
m_weakReadableStream.clear();
}
`;
templ += `
${constructor}* ${constructor}::create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure, JSObject* prototype)
{
${constructor}* ptr = new (NotNull, JSC::allocateCell<${constructor}>(vm)) ${constructor}(vm, structure, ${name}__construct);
ptr->finishCreation(vm, globalObject, prototype);
return ptr;
}
${className}* ${className}::create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure, void* sinkPtr)
{
${className}* ptr = new (NotNull, JSC::allocateCell<${className}>(vm)) ${className}(vm, structure, sinkPtr);
ptr->finishCreation(vm);
return ptr;
}
${controller}* ${controller}::create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure, void* sinkPtr)
{
${controller}* ptr = new (NotNull, JSC::allocateCell<${controller}>(vm)) ${controller}(vm, structure, sinkPtr);
ptr->finishCreation(vm);
return ptr;
}
void ${constructor}::finishCreation(VM& vm, JSC::JSGlobalObject* globalObject, JSObject* prototype)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
initializeProperties(vm, globalObject, prototype);
}
JSC::EncodedJSValue JSC_HOST_CALL_ATTRIBUTES ${constructor}::construct(JSC::JSGlobalObject* globalObject, JSC::CallFrame* callFrame) {
return ${name}__construct(globalObject, callFrame);
}
void ${constructor}::initializeProperties(VM& vm, JSC::JSGlobalObject* globalObject, JSObject* prototype)
{
putDirect(vm, vm.propertyNames->length, jsNumber(0), JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);
JSString* nameString = jsNontrivialString(vm, "${name}"_s);
m_originalName.set(vm, this, nameString);
putDirect(vm, vm.propertyNames->name, nameString, JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);
}
void ${prototypeName}::finishCreation(JSC::VM& vm, JSC::JSGlobalObject* globalObject)
{
Base::finishCreation(vm);
reifyStaticProperties(vm, ${className}::info(), ${className}PrototypeTableValues, *this);
putDirect(vm, JSC::Identifier::fromString(vm, "sinkId"_s), JSC::jsNumber(${className}::Sink), JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);
JSC_TO_STRING_TAG_WITHOUT_TRANSITION();
}
void ${controllerPrototypeName}::finishCreation(JSC::VM& vm, JSC::JSGlobalObject* globalObject)
{
Base::finishCreation(vm);
reifyStaticProperties(vm, ${controller}::info(), ${controller}PrototypeTableValues, *this);
putDirect(vm, JSC::Identifier::fromString(vm, "sinkId"_s), JSC::jsNumber(${className}::Sink), JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum);
JSC_TO_STRING_TAG_WITHOUT_TRANSITION();
}
void ${className}::finishCreation(VM& vm)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
}
void ${controller}::finishCreation(VM& vm)
{
Base::finishCreation(vm);
ASSERT(inherits(info()));
}
void ${className}::analyzeHeap(JSCell* cell, HeapAnalyzer& analyzer)
{
auto* thisObject = jsCast<${className}*>(cell);
if (void* wrapped = thisObject->wrapped()) {
analyzer.setWrappedObjectForCell(cell, wrapped);
// if (thisObject->scriptExecutionContext())
// analyzer.setLabelForCell(cell, "url " + thisObject->scriptExecutionContext()->url().string());
}
Base::analyzeHeap(cell, analyzer);
}
void ${controller}::analyzeHeap(JSCell* cell, HeapAnalyzer& analyzer)
{
auto* thisObject = jsCast<${controller}*>(cell);
if (void* wrapped = thisObject->wrapped()) {
analyzer.setWrappedObjectForCell(cell, wrapped);
// if (thisObject->scriptExecutionContext())
// analyzer.setLabelForCell(cell, "url " + thisObject->scriptExecutionContext()->url().string());
}
Base::analyzeHeap(cell, analyzer);
}
template<typename Visitor>
void ${controller}::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
${controller}* thisObject = jsCast<${controller}*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
visitor.append(thisObject->m_onPull);
visitor.append(thisObject->m_onClose);
void* ptr = thisObject->m_sinkPtr;
if (ptr)
visitor.addOpaqueRoot(ptr);
}
DEFINE_VISIT_CHILDREN(${controller});
template<typename Visitor>
void ${className}::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
${className}* thisObject = jsCast<${className}*>(cell);
ASSERT_GC_OBJECT_INHERITS(thisObject, info());
Base::visitChildren(thisObject, visitor);
void* ptr = thisObject->m_sinkPtr;
if (ptr)
visitor.addOpaqueRoot(ptr);
}
DEFINE_VISIT_CHILDREN(${className});
void ${controller}::start(JSC::JSGlobalObject *globalObject, JSC::JSValue readableStream, JSC::JSFunction *onPull, JSC::JSFunction *onClose) {
this->m_weakReadableStream = JSC::Weak<JSC::JSObject>(readableStream.getObject());
this->m_onPull.set(globalObject->vm(), this, onPull);
this->m_onClose.set(globalObject->vm(), this, onClose);
}
void ${className}::destroy(JSCell* cell)
{
static_cast<${className}*>(cell)->${className}::~${className}();
}
void ${controller}::destroy(JSCell* cell)
{
static_cast<${controller}*>(cell)->${controller}::~${controller}();
}
`;
}
templ += `
JSObject* createJSSinkPrototype(JSC::VM& vm, JSC::JSGlobalObject* globalObject, SinkID sinkID)
{
switch (sinkID) {
`;
for (let name of classes) {
templ += `
case ${name}:
return JS${name}Prototype::create(vm, globalObject, JS${name}Prototype::createStructure(vm, globalObject, globalObject->objectPrototype()));
`;
}
templ += `
default:
RELEASE_ASSERT_NOT_REACHED();
}
}`;
templ += `
JSObject* createJSSinkControllerPrototype(JSC::VM& vm, JSC::JSGlobalObject* globalObject, SinkID sinkID)
{
switch (sinkID) {
`;
for (let name of classes) {
const { controllerPrototypeName } = names(name);
templ += `
case ${name}:
return ${controllerPrototypeName}::create(vm, globalObject, ${controllerPrototypeName}::createStructure(vm, globalObject, globalObject->objectPrototype()));
`;
}
templ += `
default:
RELEASE_ASSERT_NOT_REACHED();
}
}`;
templ += `
Structure* createJSSinkControllerStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, SinkID sinkID)
{
switch (sinkID) {
`;
for (let name of classes) {
templ += `
case ${name}: {
auto* prototype = createJSSinkControllerPrototype(vm, globalObject, sinkID);
return JSReadable${name}Controller::createStructure(vm, globalObject, prototype);
}
`;
}
templ += `
default:
RELEASE_ASSERT_NOT_REACHED();
}
}`;
templ += footer;
for (let name of classes) {
const {
className,
controller,
prototypeName,
controllerPrototypeName,
constructor,
} = names(name);
templ += `
extern "C" JSC__JSValue ${name}__createObject(JSC__JSGlobalObject* arg0, void* sinkPtr)
{
auto& vm = arg0->vm();
Zig::GlobalObject* globalObject = reinterpret_cast<Zig::GlobalObject*>(arg0);
JSC::Structure* structure = globalObject->${name}Structure();
return JSC::JSValue::encode(WebCore::JS${name}::create(vm, globalObject, structure, sinkPtr));
}
extern "C" void* ${name}__fromJS(JSC__JSGlobalObject* arg0, JSC__JSValue JSValue1)
{
JSC::VM& vm = WebCore::getVM(arg0);
if (auto* sink = JSC::jsDynamicCast<WebCore::JS${name}*>(JSC::JSValue::decode(JSValue1)))
return sink->wrapped();
if (auto* controller = JSC::jsDynamicCast<WebCore::${controller}*>(JSC::JSValue::decode(JSValue1)))
return controller->wrapped();
return nullptr;
}
extern "C" void ${name}__detachPtr(JSC__JSValue JSValue0)
{
if (auto* sink = JSC::jsDynamicCast<WebCore::JS${name}*>(JSC::JSValue::decode(JSValue0))) {
sink->detach();
return;
}
if (auto* controller = JSC::jsDynamicCast<WebCore::${controller}*>(JSC::JSValue::decode(JSValue0))) {
controller->detach();
return;
}
}
extern "C" JSC__JSValue ${name}__assignToStream(JSC__JSGlobalObject* arg0, JSC__JSValue stream, void* sinkPtr, void **controllerValue)
{
auto& vm = arg0->vm();
Zig::GlobalObject* globalObject = reinterpret_cast<Zig::GlobalObject*>(arg0);
JSC::Structure* structure = WebCore::getDOMStructure<WebCore::${controller}>(vm, *globalObject);
WebCore::${controller} *controller = WebCore::${controller}::create(vm, globalObject, structure, sinkPtr);
*controllerValue = reinterpret_cast<void*>(JSC::JSValue::encode(controller));
return globalObject->assignToStream(JSC::JSValue::decode(stream), controller);
}
extern "C" void ${name}__onReady(JSC__JSValue controllerValue, JSC__JSValue amt, JSC__JSValue offset)
{
WebCore::${controller}* controller = JSC::jsCast<WebCore::${controller}*>(JSC::JSValue::decode(controllerValue).getObject());
JSC::JSFunction *function = controller->m_onPull.get();
if (function == nullptr)
return;
JSC::JSGlobalObject *globalObject = controller->globalObject();
auto callData = JSC::getCallData(function);
JSC::MarkedArgumentBuffer arguments;
arguments.append(controller);
arguments.append(JSC::JSValue::decode(amt));
arguments.append(JSC::JSValue::decode(offset));
JSC::call(globalObject, function, callData, JSC::jsUndefined(), arguments);
}
extern "C" void ${name}__onStart(JSC__JSValue controllerValue)
{
}
extern "C" void ${name}__onClose(JSC__JSValue controllerValue, JSC__JSValue reason)
{
WebCore::${controller}* controller = JSC::jsCast<WebCore::${controller}*>(JSC::JSValue::decode(controllerValue).getObject());
JSC::JSFunction *function = controller->m_onClose.get();
if (function == nullptr)
return;
// only call close once
controller->m_onClose.clear();
JSC::JSGlobalObject *globalObject = controller->globalObject();
auto callData = JSC::getCallData(function);
JSC::MarkedArgumentBuffer arguments;
auto readableStream = controller->m_weakReadableStream.get();
arguments.append(readableStream ? readableStream : JSC::jsUndefined());
arguments.append(JSC::JSValue::decode(reason));
JSC::call(globalObject, function, callData, JSC::jsUndefined(), arguments);
}
`;
}
return templ;
}
await Bun.write(resolve(import.meta.dir + "/../bindings/JSSink.h"), header());
await Bun.write(
resolve(import.meta.dir + "/../bindings/JSSink.cpp"),
await implementation(),