static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyTable(ExecState* exec)
{
VM& vm = exec->vm();
auto throwScope = DECLARE_THROW_SCOPE(vm);
JSObject* memoryDescriptor;
{
JSValue argument = exec->argument(0);
if (!argument.isObject())
return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, ASCIILiteral("WebAssembly.Table expects its first argument to be an object"))));
memoryDescriptor = jsCast<JSObject*>(argument);
}
{
Identifier elementIdent = Identifier::fromString(&vm, "element");
JSValue elementValue = memoryDescriptor->get(exec, elementIdent);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
String elementString = elementValue.toWTFString(exec);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
if (elementString != "anyfunc")
return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, ASCIILiteral("WebAssembly.Table expects its 'element' field to be the string 'anyfunc'"))));
}
Identifier initialIdent = Identifier::fromString(&vm, "initial");
JSValue initialSizeValue = memoryDescriptor->get(exec, initialIdent);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
uint32_t initial = toNonWrappingUint32(exec, initialSizeValue);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
std::optional<uint32_t> maximum;
Identifier maximumIdent = Identifier::fromString(&vm, "maximum");
bool hasProperty = memoryDescriptor->hasProperty(exec, maximumIdent);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
if (hasProperty) {
JSValue maxSizeValue = memoryDescriptor->get(exec, maximumIdent);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
maximum = toNonWrappingUint32(exec, maxSizeValue);
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
if (initial > *maximum) {
return JSValue::encode(throwException(exec, throwScope,
createRangeError(exec, ASCIILiteral("'maximum' property must be greater than or equal to the 'initial' property"))));
}
}
throwScope.release();
return JSValue::encode(JSWebAssemblyTable::create(exec, vm, exec->lexicalGlobalObject()->WebAssemblyTableStructure(), initial, maximum));
}
static EncodedJSValue JSC_HOST_CALL webAssemblyTableProtoFuncSet(ExecState* exec)
{
VM& vm = exec->vm();
auto throwScope = DECLARE_THROW_SCOPE(vm);
JSWebAssemblyTable* table = getTable(exec, vm, exec->thisValue());
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
JSValue value = exec->argument(1);
WebAssemblyFunction* wasmFunction;
WebAssemblyWrapperFunction* wasmWrapperFunction;
if (!value.isNull() && !isWebAssemblyHostFunction(vm, value, wasmFunction, wasmWrapperFunction))
return JSValue::encode(throwException(exec, throwScope, createTypeError(exec, "WebAssembly.Table.prototype.set expects the second argument to be null or an instance of WebAssembly.Function"_s)));
uint32_t index = toNonWrappingUint32(exec, exec->argument(0));
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
if (index >= table->length())
return JSValue::encode(throwException(exec, throwScope, createRangeError(exec, "WebAssembly.Table.prototype.set expects an integer less than the length of the table"_s)));
if (value.isNull())
table->clearFunction(index);
else {
ASSERT(value.isObject() && isWebAssemblyHostFunction(vm, jsCast<JSObject*>(value), wasmFunction, wasmWrapperFunction));
ASSERT(!!wasmFunction || !!wasmWrapperFunction);
if (wasmFunction)
table->setFunction(vm, index, wasmFunction);
else
table->setFunction(vm, index, wasmWrapperFunction);
}
return JSValue::encode(jsUndefined());
}
static EncodedJSValue JSC_HOST_CALL webAssemblyTableProtoFuncGet(ExecState* exec)
{
VM& vm = exec->vm();
auto throwScope = DECLARE_THROW_SCOPE(vm);
JSWebAssemblyTable* table = getTable(exec, vm, exec->thisValue());
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
uint32_t index = toNonWrappingUint32(exec, exec->argument(0));
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
if (index >= table->length())
return JSValue::encode(throwException(exec, throwScope, createRangeError(exec, "WebAssembly.Table.prototype.get expects an integer less than the length of the table"_s)));
if (JSObject* result = table->getFunction(index))
return JSValue::encode(result);
return JSValue::encode(jsNull());
}
static EncodedJSValue JSC_HOST_CALL webAssemblyTableProtoFuncGrow(ExecState* exec)
{
VM& vm = exec->vm();
auto throwScope = DECLARE_THROW_SCOPE(vm);
JSWebAssemblyTable* table = getTable(exec, vm, exec->thisValue());
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
uint32_t delta = toNonWrappingUint32(exec, exec->argument(0));
RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
uint32_t oldLength = table->length();
if (!table->grow(delta))
return JSValue::encode(throwException(exec, throwScope, createRangeError(exec, "WebAssembly.Table.prototype.grow could not grow the table"_s)));
return JSValue::encode(jsNumber(oldLength));
}
