ladybird/Libraries/LibJS/Runtime/DateConstructor.cpp
Linus Groh 849e2c77e4 LibJS: Implement constructor/non-constructor function calls
This adds Function::construct() for constructor function calls via `new`
keyword. NativeFunction doesn't have constructor behaviour by default,
ScriptFunction simply calls call() in construct()
2020-04-01 20:18:36 +02:00

73 lines
2.4 KiB
C++

/*
* Copyright (c) 2020, Linus Groh <mail@linusgroh.de>
* 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 <LibCore/DateTime.h>
#include <LibJS/Interpreter.h>
#include <LibJS/Runtime/Date.h>
#include <LibJS/Runtime/DateConstructor.h>
#include <sys/time.h>
#include <time.h>
namespace JS {
DateConstructor::DateConstructor()
{
put("prototype", interpreter().date_prototype());
put("length", Value(7));
put_native_function("now", now);
}
DateConstructor::~DateConstructor()
{
}
Value DateConstructor::call(Interpreter& interpreter)
{
auto* date = static_cast<Date*>(construct(interpreter).as_object());
if (!date)
return {};
return js_string(interpreter.heap(), date->string());
}
Value DateConstructor::construct(Interpreter& interpreter)
{
// TODO: Support args
struct timeval tv;
gettimeofday(&tv, nullptr);
auto datetime = Core::DateTime::now();
auto milliseconds = static_cast<u16>(tv.tv_usec / 1000);
return interpreter.heap().allocate<Date>(datetime, milliseconds);
}
Value DateConstructor::now(Interpreter&)
{
struct timeval tv;
gettimeofday(&tv, nullptr);
return Value(tv.tv_sec * 1000.0 + tv.tv_usec / 1000.0);
}
}