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/*
* Copyright (c) 2020, Matthew Olsson <matthewcolsson@gmail.com>
* 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER 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 <LibJS/Interpreter.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/SymbolConstructor.h>
#include <LibJS/Runtime/SymbolObject.h>
namespace JS {
SymbolConstructor::SymbolConstructor(GlobalObject& global_object)
: NativeFunction("Symbol", *global_object.function_prototype())
{
}
void SymbolConstructor::initialize(Interpreter& interpreter, GlobalObject& global_object)
{
NativeFunction::initialize(interpreter, global_object);
define_property("prototype", global_object.symbol_prototype(), 0);
define_property("length", Value(0), Attribute::Configurable);
define_native_function("for", for_, 1, Attribute::Writable | Attribute::Configurable);
define_native_function("keyFor", key_for, 1, Attribute::Writable | Attribute::Configurable);
#define __JS_ENUMERATE(SymbolName, snake_name) \
define_property(#SymbolName, interpreter.well_known_symbol_##snake_name(), 0);
JS_ENUMERATE_WELL_KNOWN_SYMBOLS
#undef __JS_ENUMERATE
}
SymbolConstructor::~SymbolConstructor()
{
}
Value SymbolConstructor::call(Interpreter& interpreter)
{
if (!interpreter.argument_count())
return js_symbol(interpreter, "", false);
return js_symbol(interpreter, interpreter.argument(0).to_string(interpreter), false);
}
Value SymbolConstructor::construct(Interpreter& interpreter, Function&)
{
interpreter.throw_exception<TypeError>(ErrorType::NotAConstructor, "Symbol");
return {};
}
JS_DEFINE_NATIVE_FUNCTION(SymbolConstructor::for_)
{
String description;
if (!interpreter.argument_count()) {
description = "undefined";
} else {
description = interpreter.argument(0).to_string(interpreter);
}
return interpreter.get_global_symbol(description);
}
JS_DEFINE_NATIVE_FUNCTION(SymbolConstructor::key_for)
{
auto argument = interpreter.argument(0);
if (!argument.is_symbol()) {
interpreter.throw_exception<TypeError>(ErrorType::NotASymbol, argument.to_string_without_side_effects().characters());
return {};
}
auto& symbol = argument.as_symbol();
if (symbol.is_global())
return js_string(interpreter, symbol.description());
return js_undefined();
}
}
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