mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 23:47:45 +00:00
LibJS: Add symbol objects
This commit adds the following classes: SymbolObject, SymbolConstructor, SymbolPrototype, and Symbol. This commit does not introduce any new functionality to the Object class, so they cannot be used as property keys in objects.
This commit is contained in:
parent
b5b08fba92
commit
4ced126704
21 changed files with 819 additions and 3 deletions
105
Libraries/LibJS/Runtime/SymbolConstructor.cpp
Normal file
105
Libraries/LibJS/Runtime/SymbolConstructor.cpp
Normal file
|
@ -0,0 +1,105 @@
|
|||
/*
|
||||
* 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()
|
||||
: NativeFunction("Symbol", *interpreter().global_object().function_prototype())
|
||||
{
|
||||
put("prototype", interpreter().global_object().symbol_prototype(), 0);
|
||||
put("length", Value(0), Attribute::Configurable);
|
||||
|
||||
put_native_function("for", for_, 1, Attribute::Writable | Attribute::Configurable);
|
||||
put_native_function("keyFor", key_for, 1, Attribute::Writable | Attribute::Configurable);
|
||||
|
||||
SymbolObject::initialize_well_known_symbols(interpreter());
|
||||
|
||||
put("iterator", SymbolObject::well_known_iterator(), 0);
|
||||
put("asyncIterator", SymbolObject::well_known_async_terator(), 0);
|
||||
put("match", SymbolObject::well_known_match(), 0);
|
||||
put("matchAll", SymbolObject::well_known_match_all(), 0);
|
||||
put("replace", SymbolObject::well_known_replace(), 0);
|
||||
put("search", SymbolObject::well_known_search(), 0);
|
||||
put("split", SymbolObject::well_known_split(), 0);
|
||||
put("hasInstance", SymbolObject::well_known_has_instance(), 0);
|
||||
put("isConcatSpreadable", SymbolObject::well_known_is_concat_spreadable(), 0);
|
||||
put("unscopables", SymbolObject::well_known_unscopables(), 0);
|
||||
put("species", SymbolObject::well_known_species(), 0);
|
||||
put("toPrimitive", SymbolObject::well_known_to_primtive(), 0);
|
||||
put("toStringTag", SymbolObject::well_known_to_string_tag(), 0);
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
interpreter.throw_exception<TypeError>("Symbol is not a constructor");
|
||||
return {};
|
||||
}
|
||||
|
||||
Value SymbolConstructor::for_(Interpreter& interpreter)
|
||||
{
|
||||
String description;
|
||||
if (!interpreter.argument_count()) {
|
||||
description = "undefined";
|
||||
} else {
|
||||
description = interpreter.argument(0).to_string(interpreter);
|
||||
}
|
||||
|
||||
return SymbolObject::get_global(interpreter, description);
|
||||
}
|
||||
|
||||
Value SymbolConstructor::key_for(Interpreter& interpreter)
|
||||
{
|
||||
auto argument = interpreter.argument(0);
|
||||
if (!argument.is_symbol()) {
|
||||
interpreter.throw_exception<TypeError>(String::format("%s is not a symbol", 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();
|
||||
}
|
||||
|
||||
}
|
Loading…
Add table
Add a link
Reference in a new issue