Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibJS/Runtime/NumberConstructor.cpp

@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2020-2023, Linus Groh <linusg@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/Math.h>
+#include <LibJS/Runtime/AbstractOperations.h>
+#include <LibJS/Runtime/BigInt.h>
+#include <LibJS/Runtime/Error.h>
+#include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/NumberConstructor.h>
+#include <LibJS/Runtime/NumberObject.h>
+#include <LibJS/Runtime/ValueInlines.h>
+
+#if defined(AK_COMPILER_CLANG)
+#    define EPSILON_VALUE AK::exp2(-52.)
+#    define MAX_SAFE_INTEGER_VALUE AK::exp2(53.) - 1
+#    define MIN_SAFE_INTEGER_VALUE -(AK::exp2(53.) - 1)
+#else
+constexpr double const EPSILON_VALUE { __builtin_exp2(-52) };
+constexpr double const MAX_SAFE_INTEGER_VALUE { __builtin_exp2(53) - 1 };
+constexpr double const MIN_SAFE_INTEGER_VALUE { -(__builtin_exp2(53) - 1) };
+#endif
+
+namespace JS {
+
+JS_DEFINE_ALLOCATOR(NumberConstructor);
+
+NumberConstructor::NumberConstructor(Realm& realm)
+    : NativeFunction(realm.vm().names.Number.as_string(), realm.intrinsics().function_prototype())
+{
+}
+
+void NumberConstructor::initialize(Realm& realm)
+{
+    auto& vm = this->vm();
+    Base::initialize(realm);
+
+    // 21.1.2.15 Number.prototype, https://tc39.es/ecma262/#sec-number.prototype
+    define_direct_property(vm.names.prototype, realm.intrinsics().number_prototype(), 0);
+
+    u8 attr = Attribute::Writable | Attribute::Configurable;
+    define_native_function(realm, vm.names.isFinite, is_finite, 1, attr);
+    define_native_function(realm, vm.names.isInteger, is_integer, 1, attr);
+    define_native_function(realm, vm.names.isNaN, is_nan, 1, attr);
+    define_native_function(realm, vm.names.isSafeInteger, is_safe_integer, 1, attr);
+    define_direct_property(vm.names.parseInt, realm.intrinsics().parse_int_function(), attr);
+    define_direct_property(vm.names.parseFloat, realm.intrinsics().parse_float_function(), attr);
+    define_direct_property(vm.names.EPSILON, Value(EPSILON_VALUE), 0);
+    define_direct_property(vm.names.MAX_VALUE, Value(NumericLimits<double>::max()), 0);
+    define_direct_property(vm.names.MIN_VALUE, Value(NumericLimits<double>::min_denormal()), 0);
+    define_direct_property(vm.names.MAX_SAFE_INTEGER, Value(MAX_SAFE_INTEGER_VALUE), 0);
+    define_direct_property(vm.names.MIN_SAFE_INTEGER, Value(MIN_SAFE_INTEGER_VALUE), 0);
+    define_direct_property(vm.names.NEGATIVE_INFINITY, js_negative_infinity(), 0);
+    define_direct_property(vm.names.POSITIVE_INFINITY, js_infinity(), 0);
+    define_direct_property(vm.names.NaN, js_nan(), 0);
+
+    define_direct_property(vm.names.length, Value(1), Attribute::Configurable);
+}
+
+// Most of 21.1.1.1 Number ( value ) factored into a separate function for sharing between call() and construct().
+static ThrowCompletionOr<Value> get_value_from_constructor_argument(VM& vm)
+{
+    Value number;
+    // 1. If value is present, then
+    if (vm.argument_count() > 0) {
+        // a. Let prim be ? ToNumeric(value).
+        auto primitive = TRY(vm.argument(0).to_numeric(vm));
+
+        // b. If Type(prim) is BigInt, let n be 𝔽(ℝ(prim)).
+        if (primitive.is_bigint()) {
+            number = Value(primitive.as_bigint().big_integer().to_double(Crypto::UnsignedBigInteger::RoundingMode::ECMAScriptNumberValueFor));
+        }
+        // c. Otherwise, let n be prim.
+        else {
+            number = primitive;
+        }
+    }
+    // 2. Else,
+    else {
+        // a. Let n be +0𝔽.
+        number = Value(0);
+    }
+    return number;
+}
+
+// 21.1.1.1 Number ( value ), https://tc39.es/ecma262/#sec-number-constructor-number-value
+ThrowCompletionOr<Value> NumberConstructor::call()
+{
+    // NOTE: get_value_from_constructor_argument performs steps 1 and 2 and returns n.
+    // 3. If NewTarget is undefined, return n.
+    return get_value_from_constructor_argument(vm());
+}
+
+// 21.1.1.1 Number ( value ), https://tc39.es/ecma262/#sec-number-constructor-number-value
+ThrowCompletionOr<NonnullGCPtr<Object>> NumberConstructor::construct(FunctionObject& new_target)
+{
+    auto& vm = this->vm();
+    // NOTE: get_value_from_constructor_argument performs steps 1 and 2 and returns n.
+    auto number = TRY(get_value_from_constructor_argument(vm));
+
+    // 4. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%Number.prototype%", « [[NumberData]] »).
+    // 5. Set O.[[NumberData]] to n.
+    // 6. Return O.
+    return TRY(ordinary_create_from_constructor<NumberObject>(vm, new_target, &Intrinsics::number_prototype, number.as_double()));
+}
+
+// 21.1.2.2 Number.isFinite ( number ), https://tc39.es/ecma262/#sec-number.isfinite
+JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_finite)
+{
+    auto number = vm.argument(0);
+
+    // 1. If number is not a Number, return false.
+    // 2. If number is not finite, return false.
+    // 3. Otherwise, return true.
+    return Value(number.is_finite_number());
+}
+
+// 21.1.2.3 Number.isInteger ( number ), https://tc39.es/ecma262/#sec-number.isinteger
+JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_integer)
+{
+    auto number = vm.argument(0);
+
+    // 1. Return IsIntegralNumber(number).
+    return Value(number.is_integral_number());
+}
+
+// 21.1.2.4 Number.isNaN ( number ), https://tc39.es/ecma262/#sec-number.isnan
+JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_nan)
+{
+    auto number = vm.argument(0);
+
+    // 1. If number is not a Number, return false.
+    // 2. If number is NaN, return true.
+    // 3. Otherwise, return false.
+    return Value(number.is_nan());
+}
+
+// 21.1.2.5 Number.isSafeInteger ( number ), https://tc39.es/ecma262/#sec-number.issafeinteger
+JS_DEFINE_NATIVE_FUNCTION(NumberConstructor::is_safe_integer)
+{
+    auto number = vm.argument(0);
+
+    // 1. If IsIntegralNumber(number) is true, then
+    if (number.is_integral_number()) {
+        // a. If abs(ℝ(number)) ≤ 2^53 - 1, return true.
+        if (fabs(number.as_double()) <= MAX_SAFE_INTEGER_VALUE)
+            return Value(true);
+    }
+
+    // 2. Return false.
+    return Value(false);
+}
+
+}