WebAssemblyInstanceConstructor.cpp [plain text]
#include "config.h"
#include "WebAssemblyInstanceConstructor.h"
#if ENABLE(WEBASSEMBLY)
#include "FunctionPrototype.h"
#include "JSCInlines.h"
#include "JSModuleEnvironment.h"
#include "JSModuleNamespaceObject.h"
#include "JSToWasm.h"
#include "JSWebAssemblyHelpers.h"
#include "JSWebAssemblyInstance.h"
#include "JSWebAssemblyLinkError.h"
#include "JSWebAssemblyMemory.h"
#include "JSWebAssemblyModule.h"
#include "WasmPlan.h"
#include "WasmToJS.h"
#include "WasmWorklist.h"
#include "WebAssemblyFunction.h"
#include "WebAssemblyInstancePrototype.h"
#include "WebAssemblyModuleRecord.h"
#include "WebAssemblyInstanceConstructor.lut.h"
namespace JSC {
const ClassInfo WebAssemblyInstanceConstructor::s_info = { "Function", &Base::s_info, &constructorTableWebAssemblyInstance, nullptr, CREATE_METHOD_TABLE(WebAssemblyInstanceConstructor) };
using Wasm::Plan;
static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyInstance(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSWebAssemblyModule* module = jsDynamicCast<JSWebAssemblyModule*>(vm, exec->argument(0));
if (!module)
return JSValue::encode(throwException(exec, scope, createTypeError(exec, ASCIILiteral("first argument to WebAssembly.Instance must be a WebAssembly.Module"), defaultSourceAppender, runtimeTypeForValue(exec->argument(0)))));
JSValue importArgument = exec->argument(1);
JSObject* importObject = importArgument.getObject();
if (!importArgument.isUndefined() && !importObject)
return JSValue::encode(throwException(exec, scope, createTypeError(exec, ASCIILiteral("second argument to WebAssembly.Instance must be undefined or an Object"), defaultSourceAppender, runtimeTypeForValue(importArgument))));
Structure* instanceStructure = InternalFunction::createSubclassStructure(exec, exec->newTarget(), exec->lexicalGlobalObject()->WebAssemblyInstanceStructure());
RETURN_IF_EXCEPTION(scope, { });
JSWebAssemblyInstance* instance = JSWebAssemblyInstance::create(vm, exec, module, importObject, instanceStructure, Ref<Wasm::Module>(module->module()));
RETURN_IF_EXCEPTION(scope, { });
instance->finalizeCreation(vm, exec, module->module().compileSync(&vm.wasmContext, instance->memoryMode(), &Wasm::createJSToWasmWrapper, &Wasm::wasmToJSException));
RETURN_IF_EXCEPTION(scope, { });
return JSValue::encode(instance);
}
static EncodedJSValue JSC_HOST_CALL callJSWebAssemblyInstance(ExecState* exec)
{
VM& vm = exec->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(exec, scope, "WebAssembly.Instance"));
}
WebAssemblyInstanceConstructor* WebAssemblyInstanceConstructor::create(VM& vm, Structure* structure, WebAssemblyInstancePrototype* thisPrototype)
{
auto* constructor = new (NotNull, allocateCell<WebAssemblyInstanceConstructor>(vm.heap)) WebAssemblyInstanceConstructor(vm, structure);
constructor->finishCreation(vm, thisPrototype);
return constructor;
}
Structure* WebAssemblyInstanceConstructor::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(InternalFunctionType, StructureFlags), info());
}
void WebAssemblyInstanceConstructor::finishCreation(VM& vm, WebAssemblyInstancePrototype* prototype)
{
Base::finishCreation(vm, ASCIILiteral("Instance"));
putDirectWithoutTransition(vm, vm.propertyNames->prototype, prototype, PropertyAttribute::DontEnum | PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly);
putDirectWithoutTransition(vm, vm.propertyNames->length, jsNumber(1), PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::DontDelete);
}
WebAssemblyInstanceConstructor::WebAssemblyInstanceConstructor(VM& vm, Structure* structure)
: Base(vm, structure, callJSWebAssemblyInstance, constructJSWebAssemblyInstance)
{
}
}
#endif // ENABLE(WEBASSEMBLY)