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Userland: Change static const variables to static constexpr

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`static const` variables can be computed and initialized at run-time
during initialization or the first time a function is called. Change
them to `static constexpr` to ensure they are computed at
compile-time.

This allows some removal of `strlen` because the length of the
`StringView` can be used which is pre-computed at compile-time.
This commit is contained in:
Lenny Maiorani 2022-03-13 16:09:41 -06:00 • committed by Andreas Kling
parent 31515a9147
commit f912a48315
23 changed files with 111 additions and 82 deletions
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10
Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp
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@ -1,10 +1,12 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Array.h>
#include <AK/Function.h>
#include <AK/TypeCasts.h>
#include <LibJS/Runtime/AbstractOperations.h>
@ -19,7 +21,7 @@
namespace JS {
static const u8 max_precision_for_radix[37] = {
static constexpr AK::Array<u8, 37> max_precision_for_radix = {
// clang-format off
0, 0, 52, 32, 26, 22, 20, 18, 17, 16,
15, 15, 14, 14, 13, 13, 13, 12, 12, 12,
@ -28,7 +30,11 @@ static const u8 max_precision_for_radix[37] = {
// clang-format on
};
static char digits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
static constexpr AK::Array<char, 36> digits = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
};
static String decimal_digits_to_string(double number)
{