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/*
* Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/SymbolConstructor.h>
namespace JS {
SymbolConstructor::SymbolConstructor(GlobalObject& global_object)
: NativeFunction(vm().names.Symbol, *global_object.function_prototype())
{
}
void SymbolConstructor::initialize(GlobalObject& global_object)
{
auto& vm = this->vm();
NativeFunction::initialize(global_object);
define_property(vm.names.prototype, global_object.symbol_prototype(), 0);
define_property(vm.names.length, Value(0), Attribute::Configurable);
define_native_function(vm.names.for_, for_, 1, Attribute::Writable | Attribute::Configurable);
define_native_function(vm.names.keyFor, key_for, 1, Attribute::Writable | Attribute::Configurable);
#define __JS_ENUMERATE(SymbolName, snake_name) \
define_property(vm.names.SymbolName, vm.well_known_symbol_##snake_name(), 0);
JS_ENUMERATE_WELL_KNOWN_SYMBOLS
#undef __JS_ENUMERATE
}
SymbolConstructor::~SymbolConstructor()
{
}
Value SymbolConstructor::call()
{
if (!vm().argument_count())
return js_symbol(heap(), "", false);
return js_symbol(heap(), vm().argument(0).to_string(global_object()), false);
}
Value SymbolConstructor::construct(Function&)
{
vm().throw_exception<TypeError>(global_object(), ErrorType::NotAConstructor, "Symbol");
return {};
}
JS_DEFINE_NATIVE_FUNCTION(SymbolConstructor::for_)
{
String description;
if (!vm.argument_count()) {
description = "undefined";
} else {
description = vm.argument(0).to_string(global_object);
}
return global_object.vm().get_global_symbol(description);
}
JS_DEFINE_NATIVE_FUNCTION(SymbolConstructor::key_for)
{
auto argument = vm.argument(0);
if (!argument.is_symbol()) {
vm.throw_exception<TypeError>(global_object, ErrorType::NotASymbol, argument.to_string_without_side_effects());
return {};
}
auto& symbol = argument.as_symbol();
if (symbol.is_global())
return js_string(vm, symbol.description());
return js_undefined();
}
}
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