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https://github.com/RGBCube/serenity
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Userland: Change static const variables to static constexpr
`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.
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31515a9147
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23 changed files with 111 additions and 82 deletions
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@ -20,8 +20,7 @@
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namespace Audio {
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static const String empty_string = "";
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static String no_plugin_error = "No loader plugin available";
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static constexpr StringView no_plugin_error = "No loader plugin available";
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using LoaderSamples = Result<NonnullRefPtr<Buffer>, LoaderError>;
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using MaybeLoaderError = Result<void, LoaderError>;
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@ -5,6 +5,7 @@
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Array.h>
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#include <LibCore/DateTime.h>
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#include <LibGUI/Calendar.h>
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#include <LibGUI/Painter.h>
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@ -16,21 +17,21 @@ REGISTER_WIDGET(GUI, Calendar);
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namespace GUI {
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static const char* long_day_names[] = {
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static constexpr Array<StringView, 7> long_day_names = {
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"Sunday", "Monday", "Tuesday", "Wednesday",
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"Thursday", "Friday", "Saturday"
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};
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static const char* short_day_names[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
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static const char* mini_day_names[] = { "Su", "Mo", "Tu", "We", "Th", "Fr", "Sa" };
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static const char* micro_day_names[] = { "S", "M", "T", "W", "T", "F", "S" };
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static constexpr Array<StringView, 7> short_day_names = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
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static constexpr Array<StringView, 7> mini_day_names = { "Su", "Mo", "Tu", "We", "Th", "Fr", "Sa" };
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static constexpr Array<StringView, 7> micro_day_names = { "S", "M", "T", "W", "T", "F", "S" };
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static const char* long_month_names[] = {
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static constexpr Array<StringView, 12> long_month_names = {
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"January", "February", "March", "April", "May", "June",
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"July", "August", "September", "October", "November", "December"
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};
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static const char* short_month_names[] = {
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static constexpr Array<StringView, 12> short_month_names = {
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"Jan", "Feb", "Mar", "Apr", "May", "Jun",
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"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
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};
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@ -16,9 +16,9 @@ REGISTER_WIDGET(GUI, CheckBox)
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namespace GUI {
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static const int s_box_width = 13;
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static const int s_box_height = 13;
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static const int s_horizontal_padding = 6;
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static constexpr int s_box_width = 13;
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static constexpr int s_box_height = 13;
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static constexpr int s_horizontal_padding = 6;
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CheckBox::CheckBox(String text)
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: AbstractButton(move(text))
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@ -1,9 +1,11 @@
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/*
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* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Array.h>
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#include <AK/LexicalPath.h>
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#include <AK/String.h>
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#include <LibCore/ConfigFile.h>
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@ -178,7 +180,10 @@ Icon FileIconProvider::icon_for_executable(const String& path)
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int image_size;
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};
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static const IconSection icon_sections[] = { { .section_name = "serenity_icon_s", .image_size = 16 }, { .section_name = "serenity_icon_m", .image_size = 32 } };
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static constexpr Array<IconSection, 2> icon_sections = {
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IconSection { .section_name = "serenity_icon_s", .image_size = 16 },
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IconSection { .section_name = "serenity_icon_m", .image_size = 32 }
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};
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bool had_error = false;
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for (const auto& icon_section : icon_sections) {
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@ -1,5 +1,6 @@
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/*
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* Copyright (c) 2020, Alex McGrath <amk@amk.ie>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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@ -48,7 +49,7 @@ void LinkLabel::set_hovered(bool hover)
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void LinkLabel::mousemove_event(MouseEvent& event)
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{
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static const int extra_target_width = 3;
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constexpr int extra_target_width = 3;
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set_hovered(event.position().x() <= font().width(text()) + extra_target_width);
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}
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@ -1,5 +1,6 @@
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/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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@ -16,8 +17,8 @@
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namespace Gfx {
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// Row strides and offsets for each interlace pass.
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static const int INTERLACE_ROW_STRIDES[] = { 8, 8, 4, 2 };
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static const int INTERLACE_ROW_OFFSETS[] = { 0, 4, 2, 1 };
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static constexpr Array<int, 4> INTERLACE_ROW_STRIDES = { 8, 8, 4, 2 };
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static constexpr Array<int, 4> INTERLACE_ROW_OFFSETS = { 0, 4, 2, 1 };
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struct GIFImageDescriptor {
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u16 x { 0 };
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@ -1,9 +1,11 @@
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Array.h>
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#include <AK/Debug.h>
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#include <AK/Endian.h>
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#include <AK/Vector.h>
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@ -17,7 +19,7 @@
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namespace Gfx {
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static const u8 png_header[8] = { 0x89, 'P', 'N', 'G', 13, 10, 26, 10 };
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static constexpr Array<u8, 8> png_header = { 0x89, 'P', 'N', 'G', 13, 10, 26, 10 };
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struct PNG_IHDR {
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NetworkOrdered<u32> width;
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@ -516,7 +518,7 @@ static bool decode_png_header(PNGLoadingContext& context)
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return false;
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}
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if (memcmp(context.data, png_header, sizeof(png_header)) != 0) {
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if (memcmp(context.data, png_header.span().data(), sizeof(png_header)) != 0) {
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dbgln_if(PNG_DEBUG, "Invalid PNG header");
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context.state = PNGLoadingContext::State::Error;
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return false;
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@ -1,10 +1,12 @@
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/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Array.h>
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#include <AK/Function.h>
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#include <AK/TypeCasts.h>
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#include <LibJS/Runtime/AbstractOperations.h>
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@ -19,7 +21,7 @@
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namespace JS {
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static const u8 max_precision_for_radix[37] = {
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static constexpr AK::Array<u8, 37> max_precision_for_radix = {
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// clang-format off
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0, 0, 52, 32, 26, 22, 20, 18, 17, 16,
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15, 15, 14, 14, 13, 13, 13, 12, 12, 12,
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// clang-format on
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};
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static char digits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
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static constexpr AK::Array<char, 36> digits = {
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
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'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
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'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
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};
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static String decimal_digits_to_string(double number)
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{
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@ -1,6 +1,7 @@
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Mițca Dumitru <dumitru0mitca@gmail.com>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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@ -63,11 +64,11 @@ union FloatExtractor;
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// This assumes long double is 80 bits, which is true with GCC on Intel platforms
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template<>
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union FloatExtractor<long double> {
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static const int mantissa_bits = 64;
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static const unsigned long long mantissa_max = ~0u;
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static const int exponent_bias = 16383;
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static const int exponent_bits = 15;
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static const unsigned exponent_max = 32767;
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static constexpr int mantissa_bits = 64;
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static constexpr unsigned long long mantissa_max = ~0u;
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static constexpr int exponent_bias = 16383;
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static constexpr int exponent_bits = 15;
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static constexpr unsigned exponent_max = 32767;
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struct {
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unsigned long long mantissa;
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unsigned exponent : 15;
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@ -79,11 +80,11 @@ union FloatExtractor<long double> {
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template<>
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union FloatExtractor<double> {
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static const int mantissa_bits = 52;
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static const unsigned long long mantissa_max = (1ull << 52) - 1;
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static const int exponent_bias = 1023;
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static const int exponent_bits = 11;
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static const unsigned exponent_max = 2047;
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static constexpr int mantissa_bits = 52;
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static constexpr unsigned long long mantissa_max = (1ull << 52) - 1;
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static constexpr int exponent_bias = 1023;
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static constexpr int exponent_bits = 11;
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static constexpr unsigned exponent_max = 2047;
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struct {
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unsigned long long mantissa : 52;
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unsigned exponent : 11;
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template<>
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union FloatExtractor<float> {
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static const int mantissa_bits = 23;
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static const unsigned mantissa_max = (1 << 23) - 1;
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static const int exponent_bias = 127;
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static const int exponent_bits = 8;
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static const unsigned exponent_max = 255;
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static constexpr int mantissa_bits = 23;
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static constexpr unsigned mantissa_max = (1 << 23) - 1;
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static constexpr int exponent_bias = 127;
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static constexpr int exponent_bits = 8;
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static constexpr unsigned exponent_max = 255;
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struct {
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unsigned long long mantissa : 23;
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unsigned exponent : 8;
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@ -1,12 +1,13 @@
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/*
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* Copyright (c) 2021, Gunnar Beutner <gunnar@beutner.name>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibC/bits/pthread_forward.h>
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static const PthreadFunctions s_functions = {
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static constexpr PthreadFunctions s_functions = {
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.pthread_mutex_trylock = pthread_mutex_trylock,
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.pthread_mutex_destroy = pthread_mutex_destroy,
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@ -1,16 +1,18 @@
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/*
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* Copyright (c) 2021, Jan de Visser <jan@de-visser.net>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/StringView.h>
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#include <LibRegex/Regex.h>
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#include <LibSQL/AST/AST.h>
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#include <LibSQL/Database.h>
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namespace SQL::AST {
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static const String s_posix_basic_metacharacters = ".^$*[]+\\";
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static constexpr StringView s_posix_basic_metacharacters = ".^$*[]+\\";
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ResultOr<Value> NumericLiteral::evaluate(ExecutionContext&) const
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{
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@ -1,5 +1,5 @@
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/*
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* Copyright (c) 2020-2021, the SerenityOS developers.
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* Copyright (c) 2020-2022, the SerenityOS developers.
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* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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// U+FFFD REPLACEMENT CHARACTER (<28>)
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#define REPLACEMENT_CHARACTER 0xFFFD
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static const u32 TOKENIZER_EOF = 0xFFFFFFFF;
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static constexpr u32 TOKENIZER_EOF = 0xFFFFFFFF;
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static inline void log_parse_error(const SourceLocation& location = SourceLocation::current())
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{
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@ -29,9 +29,9 @@ protected:
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template<typename T>
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struct TypeTrivia {
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static const size_t bits = sizeof(T) * 8;
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static const T sign_bit = 1 << (bits - 1);
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static const T mask = MakeUnsigned<T>(-1);
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static constexpr size_t bits = sizeof(T) * 8;
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static constexpr T sign_bit = 1 << (bits - 1);
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static constexpr T mask = MakeUnsigned<T>(-1);
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};
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template<typename T, typename U>
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@ -189,7 +189,7 @@ enum InstructionFormat {
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OP_NEAR_imm,
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};
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static const unsigned CurrentAddressSize = 0xB33FBABE;
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static constexpr unsigned CurrentAddressSize = 0xB33FBABE;
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struct InstructionDescriptor {
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InstructionHandler handler { nullptr };
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