ReadableStreamDefaultController.cpp [plain text]
#include "config.h"
#include "ReadableStreamDefaultController.h"
#if ENABLE(STREAMS_API)
#include "WebCoreJSClientData.h"
#include <heap/HeapInlines.h>
#include <runtime/CatchScope.h>
#include <runtime/IdentifierInlines.h>
#include <runtime/JSObjectInlines.h>
namespace WebCore {
static inline JSC::JSValue callFunction(JSC::ExecState& state, JSC::JSValue jsFunction, JSC::JSValue thisValue, const JSC::ArgList& arguments)
{
JSC::CallData callData;
auto callType = JSC::getCallData(jsFunction, callData);
return call(&state, jsFunction, callType, callData, thisValue, arguments);
}
JSC::JSValue ReadableStreamDefaultController::invoke(JSC::ExecState& state, JSC::JSObject& object, const char* propertyName, JSC::JSValue parameter)
{
JSC::VM& vm = state.vm();
JSC::JSLockHolder lock(vm);
auto scope = DECLARE_THROW_SCOPE(vm);
auto function = object.get(&state, JSC::Identifier::fromString(&state, propertyName));
RETURN_IF_EXCEPTION(scope, JSC::JSValue());
if (!function.isFunction()) {
if (!function.isUndefined())
throwTypeError(&state, scope, ASCIILiteral("ReadableStream trying to call a property that is not callable"));
return JSC::jsUndefined();
}
JSC::MarkedArgumentBuffer arguments;
arguments.append(parameter);
return callFunction(state, function, &object, arguments);
}
bool ReadableStreamDefaultController::isControlledReadableStreamLocked() const
{
auto& globalObject = this->globalObject();
JSC::VM& vm = globalObject.vm();
JSC::JSLockHolder lock(vm);
auto scope = DECLARE_CATCH_SCOPE(vm);
auto& state = globalExec();
auto& clientData = *static_cast<JSVMClientData*>(vm.clientData);
auto readableStream = m_jsController->get(&state, clientData.builtinNames().controlledReadableStreamPrivateName());
scope.assertNoException();
auto* isLocked = globalObject.builtinInternalFunctions().readableStreamInternals().m_isReadableStreamLockedFunction.get();
ASSERT(isLocked);
JSC::MarkedArgumentBuffer arguments;
arguments.append(readableStream);
auto result = callFunction(state, isLocked, JSC::jsUndefined(), arguments);
scope.assertNoException();
return result.isTrue();
}
}
#endif // ENABLE(STREAMS_API)