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ladybird/Userland/Applications/Spreadsheet/JSIntegration.cpp
Timothy Flynn 2692db8699 LibJS+Everywhere: Allow Cell::initialize overrides to throw OOM errors 
Note that as of this commit, there aren't any such throwers, and the
call site in Heap::allocate will drop exceptions on the floor. This
commit only serves to change the declaration of the overrides, make sure
they return an empty value, and to propagate OOM errors frm their base
initialize invocations.
2023-01-29 00:02:45 +00:00

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/*
* Copyright (c) 2020-2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "JSIntegration.h"
#include "Spreadsheet.h"
#include "Workbook.h"
#include <LibJS/Lexer.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/Value.h>
namespace Spreadsheet {
Optional<FunctionAndArgumentIndex> get_function_and_argument_index(StringView source)
{
JS::Lexer lexer { source };
// Track <identifier> <OpenParen>'s, and how many complete expressions are inside the parenthesized expression.
Vector<size_t> state;
StringView last_name;
Vector<StringView> names;
size_t open_parens_since_last_commit = 0;
size_t open_curlies_and_brackets_since_last_commit = 0;
bool previous_was_identifier = false;
auto token = lexer.next();
while (token.type() != JS::TokenType::Eof) {
switch (token.type()) {
case JS::TokenType::Identifier:
previous_was_identifier = true;
last_name = token.value();
break;
case JS::TokenType::ParenOpen:
if (!previous_was_identifier) {
open_parens_since_last_commit++;
break;
}
previous_was_identifier = false;
state.append(0);
names.append(last_name);
break;
case JS::TokenType::ParenClose:
previous_was_identifier = false;
if (open_parens_since_last_commit == 0) {
if (state.is_empty() || names.is_empty()) {
// JS Syntax error.
break;
}
state.take_last();
names.take_last();
break;
}
--open_parens_since_last_commit;
break;
case JS::TokenType::Comma:
previous_was_identifier = false;
if (open_parens_since_last_commit == 0 && open_curlies_and_brackets_since_last_commit == 0) {
if (!state.is_empty())
state.last()++;
break;
}
break;
case JS::TokenType::BracketOpen:
previous_was_identifier = false;
open_curlies_and_brackets_since_last_commit++;
break;
case JS::TokenType::BracketClose:
previous_was_identifier = false;
if (open_curlies_and_brackets_since_last_commit > 0)
open_curlies_and_brackets_since_last_commit--;
break;
case JS::TokenType::CurlyOpen:
previous_was_identifier = false;
open_curlies_and_brackets_since_last_commit++;
break;
case JS::TokenType::CurlyClose:
previous_was_identifier = false;
if (open_curlies_and_brackets_since_last_commit > 0)
open_curlies_and_brackets_since_last_commit--;
break;
default:
previous_was_identifier = false;
break;
}
token = lexer.next();
}
if (!names.is_empty() && !state.is_empty())
return FunctionAndArgumentIndex { names.last(), state.last() };
return {};
}
SheetGlobalObject::SheetGlobalObject(JS::Realm& realm, Sheet& sheet)
: JS::GlobalObject(realm)
, m_sheet(sheet)
{
}
JS::ThrowCompletionOr<bool> SheetGlobalObject::internal_has_property(JS::PropertyKey const& name) const
{
if (name.is_string()) {
if (name.as_string() == "value")
return true;
if (m_sheet.parse_cell_name(name.as_string()).has_value())
return true;
}
return Object::internal_has_property(name);
}
JS::ThrowCompletionOr<JS::Value> SheetGlobalObject::internal_get(const JS::PropertyKey& property_name, JS::Value receiver) const
{
if (property_name.is_string()) {
if (property_name.as_string() == "value") {
if (auto cell = m_sheet.current_evaluated_cell())
return cell->js_data();
return JS::js_undefined();
}
if (auto pos = m_sheet.parse_cell_name(property_name.as_string()); pos.has_value()) {
auto& cell = m_sheet.ensure(pos.value());
cell.reference_from(m_sheet.current_evaluated_cell());
return cell.typed_js_data();
}
}
return Base::internal_get(property_name, receiver);
}
JS::ThrowCompletionOr<bool> SheetGlobalObject::internal_set(const JS::PropertyKey& property_name, JS::Value value, JS::Value receiver)
{
if (property_name.is_string()) {
if (auto pos = m_sheet.parse_cell_name(property_name.as_string()); pos.has_value()) {
auto& cell = m_sheet.ensure(pos.value());
if (auto current = m_sheet.current_evaluated_cell())
current->reference_from(&cell);
cell.set_data(value); // FIXME: This produces un-savable state!
return true;
}
}
return Base::internal_set(property_name, value, receiver);
}
JS::ThrowCompletionOr<void> SheetGlobalObject::initialize(JS::Realm& realm)
{
MUST_OR_THROW_OOM(Base::initialize(realm));
u8 attr = JS::Attribute::Configurable | JS::Attribute::Writable | JS::Attribute::Enumerable;
define_native_function(realm, "get_real_cell_contents", get_real_cell_contents, 1, attr);
define_native_function(realm, "set_real_cell_contents", set_real_cell_contents, 2, attr);
define_native_function(realm, "parse_cell_name", parse_cell_name, 1, attr);
define_native_function(realm, "current_cell_position", current_cell_position, 0, attr);
define_native_function(realm, "column_arithmetic", column_arithmetic, 2, attr);
define_native_function(realm, "column_index", column_index, 1, attr);
define_native_function(realm, "get_column_bound", get_column_bound, 1, attr);
define_native_accessor(realm, "name", get_name, nullptr, attr);
return {};
}
void SheetGlobalObject::visit_edges(Visitor& visitor)
{
Base::visit_edges(visitor);
for (auto& it : m_sheet.cells()) {
if (auto opt_thrown_value = it.value->thrown_value(); opt_thrown_value.has_value())
visitor.visit(*opt_thrown_value);
visitor.visit(it.value->evaluated_data());
}
}
JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::get_name)
{
auto* this_object = TRY(vm.this_value().to_object(vm));
if (!is<SheetGlobalObject>(this_object))
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "SheetGlobalObject");
auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
return JS::PrimitiveString::create(vm, sheet_object->m_sheet.name());
}
JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::get_real_cell_contents)
{
auto* this_object = TRY(vm.this_value().to_object(vm));
if (!is<SheetGlobalObject>(this_object))
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "SheetGlobalObject");
auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
if (vm.argument_count() != 1)
return vm.throw_completion<JS::TypeError>("Expected exactly one argument to get_real_cell_contents()");
auto name_value = vm.argument(0);
if (!name_value.is_string())
return vm.throw_completion<JS::TypeError>("Expected a String argument to get_real_cell_contents()");
auto position = sheet_object->m_sheet.parse_cell_name(TRY(name_value.as_string().deprecated_string()));
if (!position.has_value())
return vm.throw_completion<JS::TypeError>("Invalid cell name");
auto const* cell = sheet_object->m_sheet.at(position.value());
if (!cell)
return JS::js_undefined();
if (cell->kind() == Spreadsheet::Cell::Kind::Formula)
return JS::PrimitiveString::create(vm, DeprecatedString::formatted("={}", cell->data()));
return JS::PrimitiveString::create(vm, cell->data());
}
JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::set_real_cell_contents)
{
auto* this_object = TRY(vm.this_value().to_object(vm));
if (!is<SheetGlobalObject>(this_object))
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "SheetGlobalObject");
auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
if (vm.argument_count() != 2)
return vm.throw_completion<JS::TypeError>("Expected exactly two arguments to set_real_cell_contents()");
auto name_value = vm.argument(0);
if (!name_value.is_string())
return vm.throw_completion<JS::TypeError>("Expected the first argument of set_real_cell_contents() to be a String");
auto position = sheet_object->m_sheet.parse_cell_name(TRY(name_value.as_string().deprecated_string()));
if (!position.has_value())
return vm.throw_completion<JS::TypeError>("Invalid cell name");
auto new_contents_value = vm.argument(1);
if (!new_contents_value.is_string())
return vm.throw_completion<JS::TypeError>("Expected the second argument of set_real_cell_contents() to be a String");
auto& cell = sheet_object->m_sheet.ensure(position.value());
auto new_contents = TRY(new_contents_value.as_string().deprecated_string());
cell.set_data(new_contents);
return JS::js_null();
}
JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::parse_cell_name)
{
auto& realm = *vm.current_realm();
auto* this_object = TRY(vm.this_value().to_object(vm));
if (!is<SheetGlobalObject>(this_object))
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "SheetGlobalObject");
auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
if (vm.argument_count() != 1)
return vm.throw_completion<JS::TypeError>("Expected exactly one argument to parse_cell_name()");
auto name_value = vm.argument(0);
if (!name_value.is_string())
return vm.throw_completion<JS::TypeError>("Expected a String argument to parse_cell_name()");
auto position = sheet_object->m_sheet.parse_cell_name(TRY(name_value.as_string().deprecated_string()));
if (!position.has_value())
return JS::js_undefined();
auto object = JS::Object::create(realm, realm.intrinsics().object_prototype());
object->define_direct_property("column", JS::PrimitiveString::create(vm, sheet_object->m_sheet.column(position.value().column)), JS::default_attributes);
object->define_direct_property("row", JS::Value((unsigned)position.value().row), JS::default_attributes);
return object;
}
JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::current_cell_position)
{
auto& realm = *vm.current_realm();
if (vm.argument_count() != 0)
return vm.throw_completion<JS::TypeError>("Expected no arguments to current_cell_position()");
auto* this_object = TRY(vm.this_value().to_object(vm));
if (!is<SheetGlobalObject>(this_object))
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "SheetGlobalObject");
auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
auto* current_cell = sheet_object->m_sheet.current_evaluated_cell();
if (!current_cell)
return JS::js_null();
auto position = current_cell->position();
auto object = JS::Object::create(realm, realm.intrinsics().object_prototype());
object->define_direct_property("column", JS::PrimitiveString::create(vm, sheet_object->m_sheet.column(position.column)), JS::default_attributes);
object->define_direct_property("row", JS::Value((unsigned)position.row), JS::default_attributes);
return object;
}
JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::column_index)
{
if (vm.argument_count() != 1)
return vm.throw_completion<JS::TypeError>("Expected exactly one argument to column_index()");
auto column_name = vm.argument(0);
if (!column_name.is_string())
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "String");
auto column_name_str = TRY(column_name.as_string().deprecated_string());
auto* this_object = TRY(vm.this_value().to_object(vm));
if (!is<SheetGlobalObject>(this_object))
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "SheetGlobalObject");
auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
auto& sheet = sheet_object->m_sheet;
auto column_index = sheet.column_index(column_name_str);
if (!column_index.has_value())
return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("'{}' is not a valid column", column_name_str));
return JS::Value((i32)column_index.value());
}
JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::column_arithmetic)
{
if (vm.argument_count() != 2)
return vm.throw_completion<JS::TypeError>("Expected exactly two arguments to column_arithmetic()");
auto column_name = vm.argument(0);
if (!column_name.is_string())
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "String");
auto column_name_str = TRY(column_name.as_string().deprecated_string());
auto offset = TRY(vm.argument(1).to_number(vm));
auto offset_number = static_cast<i32>(offset.as_double());
auto* this_object = TRY(vm.this_value().to_object(vm));
if (!is<SheetGlobalObject>(this_object))
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "SheetGlobalObject");
auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
auto& sheet = sheet_object->m_sheet;
auto new_column = sheet.column_arithmetic(column_name_str, offset_number);
if (!new_column.has_value())
return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("'{}' is not a valid column", column_name_str));
return JS::PrimitiveString::create(vm, new_column.release_value());
}
JS_DEFINE_NATIVE_FUNCTION(SheetGlobalObject::get_column_bound)
{
if (vm.argument_count() != 1)
return vm.throw_completion<JS::TypeError>("Expected exactly one argument to get_column_bound()");
auto column_name = vm.argument(0);
if (!column_name.is_string())
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "String");
auto column_name_str = TRY(column_name.as_string().deprecated_string());
auto* this_object = TRY(vm.this_value().to_object(vm));
if (!is<SheetGlobalObject>(this_object))
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "SheetGlobalObject");
auto sheet_object = static_cast<SheetGlobalObject*>(this_object);
auto& sheet = sheet_object->m_sheet;
auto maybe_column_index = sheet.column_index(column_name_str);
if (!maybe_column_index.has_value())
return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("'{}' is not a valid column", column_name_str));
auto bounds = sheet.written_data_bounds(*maybe_column_index);
return JS::Value(bounds.row);
}
WorkbookObject::WorkbookObject(JS::Realm& realm, Workbook& workbook)
: JS::Object(ConstructWithPrototypeTag::Tag, *realm.intrinsics().object_prototype())
, m_workbook(workbook)
{
}
JS::ThrowCompletionOr<void> WorkbookObject::initialize(JS::Realm& realm)
{
MUST_OR_THROW_OOM(Object::initialize(realm));
define_native_function(realm, "sheet", sheet, 1, JS::default_attributes);
return {};
}
void WorkbookObject::visit_edges(Visitor& visitor)
{
Base::visit_edges(visitor);
for (auto& sheet : m_workbook.sheets())
visitor.visit(&sheet.global_object());
}
JS_DEFINE_NATIVE_FUNCTION(WorkbookObject::sheet)
{
if (vm.argument_count() != 1)
return vm.throw_completion<JS::TypeError>("Expected exactly one argument to sheet()");
auto name_value = vm.argument(0);
if (!name_value.is_string() && !name_value.is_number())
return vm.throw_completion<JS::TypeError>("Expected a String or Number argument to sheet()");
auto* this_object = TRY(vm.this_value().to_object(vm));
if (!is<WorkbookObject>(this_object))
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "WorkbookObject");
auto& workbook = static_cast<WorkbookObject*>(this_object)->m_workbook;
if (name_value.is_string()) {
auto name = TRY(name_value.as_string().deprecated_string());
for (auto& sheet : workbook.sheets()) {
if (sheet.name() == name)
return JS::Value(&sheet.global_object());
}
} else {
auto index = TRY(name_value.to_length(vm));
if (index < workbook.sheets().size())
return JS::Value(&workbook.sheets()[index].global_object());
}
return JS::js_undefined();
}
}
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