mirror of
https://github.com/RGBCube/serenity
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d4d9222eea
The constructor with a string argument isn't implemented yet, but this implements the other variants. The timestamp constructor doens't handle negative timestamps correctly. Out-of-bound and invalid arguments aren't handled correctly.
115 lines
4.8 KiB
C++
115 lines
4.8 KiB
C++
/*
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* Copyright (c) 2020, Linus Groh <mail@linusgroh.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <LibCore/DateTime.h>
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#include <LibJS/Interpreter.h>
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#include <LibJS/Runtime/Date.h>
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#include <LibJS/Runtime/DateConstructor.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <sys/time.h>
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#include <time.h>
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namespace JS {
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DateConstructor::DateConstructor(GlobalObject& global_object)
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: NativeFunction("Date", *global_object.function_prototype())
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{
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}
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void DateConstructor::initialize(GlobalObject& global_object)
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{
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NativeFunction::initialize(global_object);
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define_property("prototype", global_object.date_prototype(), 0);
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define_property("length", Value(7), Attribute::Configurable);
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define_native_function("now", now, 0, Attribute::Writable | Attribute::Configurable);
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}
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DateConstructor::~DateConstructor()
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{
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}
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Value DateConstructor::call(Interpreter& interpreter)
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{
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auto date = construct(interpreter, *this);
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if (!date.is_object())
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return {};
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return js_string(interpreter, static_cast<Date&>(date.as_object()).string());
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}
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Value DateConstructor::construct(Interpreter& interpreter, Function&)
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{
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if (interpreter.argument_count() == 0) {
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struct timeval tv;
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gettimeofday(&tv, nullptr);
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auto datetime = Core::DateTime::now();
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auto milliseconds = static_cast<u16>(tv.tv_usec / 1000);
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return Date::create(global_object(), datetime, milliseconds);
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}
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if (interpreter.argument_count() == 1 && interpreter.argument(0).is_string()) {
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// FIXME: Parse simplified ISO8601-like string, like Date.parse() will do.
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struct timeval tv;
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gettimeofday(&tv, nullptr);
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auto datetime = Core::DateTime::now();
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auto milliseconds = static_cast<u16>(tv.tv_usec / 1000);
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return Date::create(global_object(), datetime, milliseconds);
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}
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if (interpreter.argument_count() == 1) {
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// A timestamp since the epoch, in UTC.
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// FIXME: Date() probably should use a double as internal representation, so that NaN arguments and larger offsets are handled correctly.
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// FIXME: DateTime::from_timestamp() seems to not support negative offsets.
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double value = interpreter.argument(0).to_double(interpreter);
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auto datetime = Core::DateTime::from_timestamp(static_cast<time_t>(value / 1000));
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auto milliseconds = static_cast<u16>(fmod(value, 1000));
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return Date::create(global_object(), datetime, milliseconds);
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}
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// A date/time in components, in local time.
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// FIXME: This doesn't construct an "Invalid Date" object if one of the parameters is NaN.
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// FIXME: This doesn't range-check args and convert months > 12 to year increments etc.
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auto arg_or = [&interpreter](size_t i, i32 fallback) { return interpreter.argument_count() > i ? interpreter.argument(i).to_i32(interpreter) : fallback; };
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int year = interpreter.argument(0).to_i32(interpreter);
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int month_index = interpreter.argument(1).to_i32(interpreter);
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int day = arg_or(2, 1);
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int hours = arg_or(3, 0);
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int minutes = arg_or(4, 0);
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int seconds = arg_or(5, 0);
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int milliseconds = arg_or(6, 0);
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if (year >= 0 && year <= 99)
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year += 1900;
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int month = month_index + 1;
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auto datetime = Core::DateTime::create(year, month, day, hours, minutes, seconds);
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return Date::create(global_object(), datetime, milliseconds);
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}
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JS_DEFINE_NATIVE_FUNCTION(DateConstructor::now)
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{
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struct timeval tv;
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gettimeofday(&tv, nullptr);
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return Value(tv.tv_sec * 1000.0 + tv.tv_usec / 1000.0);
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}
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}
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