mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-04-25 14:05:15 +00:00
115 lines
4.3 KiB
C++
115 lines
4.3 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 <LibJS/Runtime/Error.h>
|
|
#include <LibJS/Runtime/GlobalObject.h>
|
|
#include <LibJS/Runtime/NumberConstructor.h>
|
|
#include <LibJS/Runtime/NumberObject.h>
|
|
#include <math.h>
|
|
|
|
#ifdef __clang__
|
|
# define EPSILON_VALUE pow(2, -52)
|
|
# define MAX_SAFE_INTEGER_VALUE pow(2, 53) - 1
|
|
# define MIN_SAFE_INTEGER_VALUE -(pow(2, 53) - 1)
|
|
#else
|
|
constexpr const double EPSILON_VALUE { __builtin_pow(2, -52) };
|
|
constexpr const double MAX_SAFE_INTEGER_VALUE { __builtin_pow(2, 53) - 1 };
|
|
constexpr const double MIN_SAFE_INTEGER_VALUE { -(__builtin_pow(2, 53) - 1) };
|
|
#endif
|
|
|
|
namespace JS {
|
|
|
|
NumberConstructor::NumberConstructor(GlobalObject& global_object)
|
|
: NativeFunction(vm().names.Number, *global_object.function_prototype())
|
|
{
|
|
}
|
|
|
|
void NumberConstructor::initialize(GlobalObject& global_object)
|
|
{
|
|
auto& vm = this->vm();
|
|
NativeFunction::initialize(global_object);
|
|
u8 attr = Attribute::Writable | Attribute::Configurable;
|
|
define_native_function(vm.names.isFinite, is_finite, 1, attr);
|
|
define_native_function(vm.names.isInteger, is_integer, 1, attr);
|
|
define_native_function(vm.names.isNaN, is_nan, 1, attr);
|
|
define_native_function(vm.names.isSafeInteger, is_safe_integer, 1, attr);
|
|
define_property(vm.names.parseFloat, global_object.get(vm.names.parseFloat));
|
|
define_property(vm.names.prototype, global_object.number_prototype(), 0);
|
|
define_property(vm.names.length, Value(1), Attribute::Configurable);
|
|
define_property(vm.names.EPSILON, Value(EPSILON_VALUE), 0);
|
|
define_property(vm.names.MAX_SAFE_INTEGER, Value(MAX_SAFE_INTEGER_VALUE), 0);
|
|
define_property(vm.names.MIN_SAFE_INTEGER, Value(MIN_SAFE_INTEGER_VALUE), 0);
|
|
define_property(vm.names.NEGATIVE_INFINITY, js_negative_infinity(), 0);
|
|
define_property(vm.names.POSITIVE_INFINITY, js_infinity(), 0);
|
|
define_property(vm.names.NaN, js_nan(), 0);
|
|
}
|
|
|
|
NumberConstructor::~NumberConstructor()
|
|
{
|
|
}
|
|
|
|
Value NumberConstructor::call()
|
|
{
|
|
if (!vm().argument_count())
|
|
return Value(0);
|
|
return vm().argument(0).to_number(global_object());
|
|
}
|
|
|
|
Value NumberConstructor::construct(Function&)
|
|
{
|
|
double number = 0;
|
|
if (vm().argument_count()) {
|
|
number = vm().argument(0).to_double(global_object());
|
|
if (vm().exception())
|
|
return {};
|
|
}
|
|
return NumberObject::create(global_object(), number);
|
|
}
|
|
|
|
JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_finite)
|
|
{
|
|
return Value(vm.argument(0).is_finite_number());
|
|
}
|
|
|
|
JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_integer)
|
|
{
|
|
return Value(vm.argument(0).is_integer());
|
|
}
|
|
|
|
JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_nan)
|
|
{
|
|
return Value(vm.argument(0).is_nan());
|
|
}
|
|
|
|
JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_safe_integer)
|
|
{
|
|
if (!vm.argument(0).is_number())
|
|
return Value(false);
|
|
auto value = vm.argument(0).as_double();
|
|
return Value((int64_t)value == value && value >= MIN_SAFE_INTEGER_VALUE && value <= MAX_SAFE_INTEGER_VALUE);
|
|
}
|
|
|
|
}
|