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/*
* Copyright (C) 2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WebAssemblyExceptionConstructor.h"
#if ENABLE(WEBASSEMBLY)
#include "IteratorOperations.h"
#include "JITOpaqueByproducts.h"
#include "JSCInlines.h"
#include "JSWebAssemblyException.h"
#include "JSWebAssemblyHelpers.h"
#include "JSWebAssemblyTag.h"
#include "WebAssemblyExceptionPrototype.h"
namespace JSC {
const ClassInfo WebAssemblyExceptionConstructor::s_info = { "Function"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(WebAssemblyExceptionConstructor) };
static JSC_DECLARE_HOST_FUNCTION(constructJSWebAssemblyException);
static JSC_DECLARE_HOST_FUNCTION(callJSWebAssemblyException);
JSC_DEFINE_HOST_FUNCTION(constructJSWebAssemblyException, (JSGlobalObject* globalObject, CallFrame* callFrame))
{
auto& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
JSValue tagValue = callFrame->argument(0);
JSValue tagParameters = callFrame->argument(1);
auto tag = jsDynamicCast<JSWebAssemblyTag*>(tagValue);
if (!tag)
return throwVMTypeError(globalObject, scope, "WebAssembly.Exception constructor expects the first argument to be a WebAssembly.Tag"_s);
if (UNLIKELY(&tag->tag() == &Wasm::Tag::jsExceptionTag()))
return throwVMTypeError(globalObject, scope, "WebAssembly.Exception constructor does not accept WebAssembly.JSTag"_s);
const auto& tagFunctionType = tag->type();
MarkedArgumentBuffer values;
values.ensureCapacity(tagFunctionType.argumentCount());
forEachInIterable(globalObject, tagParameters, [&] (VM&, JSGlobalObject*, JSValue nextValue) {
values.append(nextValue);
if (UNLIKELY(values.hasOverflowed()))
throwOutOfMemoryError(globalObject, scope);
});
RETURN_IF_EXCEPTION(scope, { });
if (values.size() != tagFunctionType.argumentCount())
return throwVMTypeError(globalObject, scope, "WebAssembly.Exception constructor expects the number of paremeters in WebAssembly.Tag to match the tags parameter count."_s);
// Any GC'd values in here will be marked by the MarkedArugementBuffer until stored in the Exception.
FixedVector<uint64_t> payload(values.size());
for (unsigned i = 0; i < values.size(); ++i) {
auto type = tagFunctionType.argumentType(i);
if (UNLIKELY(type.kind == Wasm::TypeKind::V128 || isExnref(type)))
return throwVMTypeError(globalObject, scope, "WebAssembly.Exception constructor expects payload includes neither v128 nor exnref."_s);
payload[i] = toWebAssemblyValue(globalObject, type, values.at(i));
RETURN_IF_EXCEPTION(scope, { });
}
JSObject* newTarget = asObject(callFrame->newTarget());
Structure* structure = JSC_GET_DERIVED_STRUCTURE(vm, webAssemblyExceptionStructure, newTarget, callFrame->jsCallee());
RETURN_IF_EXCEPTION(scope, { });
RELEASE_AND_RETURN(scope, JSValue::encode(JSWebAssemblyException::create(vm, structure, tag->tag(), WTFMove(payload))));
}
JSC_DEFINE_HOST_FUNCTION(callJSWebAssemblyException, (JSGlobalObject* globalObject, CallFrame*))
{
VM& vm = globalObject->vm();
auto scope = DECLARE_THROW_SCOPE(vm);
return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(globalObject, scope, "WebAssembly.Exception"_s));
}
WebAssemblyExceptionConstructor* WebAssemblyExceptionConstructor::create(VM& vm, Structure* structure, WebAssemblyExceptionPrototype* thisPrototype)
{
auto* constructor = new (NotNull, allocateCell<WebAssemblyExceptionConstructor>(vm)) WebAssemblyExceptionConstructor(vm, structure);
constructor->finishCreation(vm, thisPrototype);
return constructor;
}
Structure* WebAssemblyExceptionConstructor::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(InternalFunctionType, StructureFlags), info());
}
void WebAssemblyExceptionConstructor::finishCreation(VM& vm, WebAssemblyExceptionPrototype* prototype)
{
Base::finishCreation(vm, 1, "Exception"_s, PropertyAdditionMode::WithoutStructureTransition);
putDirectWithoutTransition(vm, vm.propertyNames->prototype, prototype, PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::DontDelete);
}
WebAssemblyExceptionConstructor::WebAssemblyExceptionConstructor(VM& vm, Structure* structure)
: Base(vm, structure, callJSWebAssemblyException, constructJSWebAssemblyException)
{
}
} // namespace JSC
#endif // ENABLE(WEBASSEMBLY)
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