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5d180d1f99
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED) Since all of these checks are done in release builds as well, let's rename them to VERIFY to prevent confusion, as everyone is used to assertions being compiled out in release. We can introduce a new ASSERT macro that is specifically for debug checks, but I'm doing this wholesale conversion first since we've accumulated thousands of these already, and it's not immediately obvious which ones are suitable for ASSERT.
732 lines
22 KiB
C++
732 lines
22 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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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 <AK/Format.h>
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#include <AK/GenericLexer.h>
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#include <AK/String.h>
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#include <AK/StringBuilder.h>
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#include <ctype.h>
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#ifdef KERNEL
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# include <Kernel/Process.h>
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# include <Kernel/Thread.h>
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#else
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# include <stdio.h>
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#endif
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namespace AK {
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namespace {
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constexpr size_t use_next_index = NumericLimits<size_t>::max();
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// The worst case is that we have the largest 64-bit value formatted as binary number, this would take
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// 65 bytes. Choosing a larger power of two won't hurt and is a bit of mitigation against out-of-bounds accesses.
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inline size_t convert_unsigned_to_string(u64 value, Array<u8, 128>& buffer, u8 base, bool upper_case)
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{
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VERIFY(base >= 2 && base <= 16);
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static constexpr const char* lowercase_lookup = "0123456789abcdef";
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static constexpr const char* uppercase_lookup = "0123456789ABCDEF";
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if (value == 0) {
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buffer[0] = '0';
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return 1;
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}
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size_t used = 0;
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while (value > 0) {
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if (upper_case)
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buffer[used++] = uppercase_lookup[value % base];
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else
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buffer[used++] = lowercase_lookup[value % base];
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value /= base;
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}
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for (size_t i = 0; i < used / 2; ++i)
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swap(buffer[i], buffer[used - i - 1]);
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return used;
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}
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void vformat_impl(TypeErasedFormatParams& params, FormatBuilder& builder, FormatParser& parser)
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{
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const auto literal = parser.consume_literal();
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builder.put_literal(literal);
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FormatParser::FormatSpecifier specifier;
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if (!parser.consume_specifier(specifier)) {
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VERIFY(parser.is_eof());
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return;
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}
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if (specifier.index == use_next_index)
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specifier.index = params.take_next_index();
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auto& parameter = params.parameters().at(specifier.index);
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FormatParser argparser { specifier.flags };
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parameter.formatter(params, builder, argparser, parameter.value);
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vformat_impl(params, builder, parser);
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}
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} // namespace AK::{anonymous}
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size_t TypeErasedParameter::to_size() const
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{
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i64 svalue;
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if (type == TypeErasedParameter::Type::UInt8)
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svalue = *reinterpret_cast<const u8*>(value);
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else if (type == TypeErasedParameter::Type::UInt16)
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svalue = *reinterpret_cast<const u16*>(value);
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else if (type == TypeErasedParameter::Type::UInt32)
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svalue = *reinterpret_cast<const u32*>(value);
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else if (type == TypeErasedParameter::Type::UInt64)
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svalue = *reinterpret_cast<const u64*>(value);
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else if (type == TypeErasedParameter::Type::Int8)
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svalue = *reinterpret_cast<const i8*>(value);
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else if (type == TypeErasedParameter::Type::Int16)
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svalue = *reinterpret_cast<const i16*>(value);
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else if (type == TypeErasedParameter::Type::Int32)
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svalue = *reinterpret_cast<const i32*>(value);
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else if (type == TypeErasedParameter::Type::Int64)
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svalue = *reinterpret_cast<const i64*>(value);
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else
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VERIFY_NOT_REACHED();
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VERIFY(svalue >= 0);
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return static_cast<size_t>(svalue);
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}
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FormatParser::FormatParser(StringView input)
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: GenericLexer(input)
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{
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}
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StringView FormatParser::consume_literal()
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{
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const auto begin = tell();
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while (!is_eof()) {
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if (consume_specific("{{"))
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continue;
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if (consume_specific("}}"))
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continue;
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if (next_is(is_any_of("{}")))
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return m_input.substring_view(begin, tell() - begin);
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consume();
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}
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return m_input.substring_view(begin);
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}
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bool FormatParser::consume_number(size_t& value)
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{
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value = 0;
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bool consumed_at_least_one = false;
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while (next_is(isdigit)) {
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value *= 10;
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value += consume() - '0';
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consumed_at_least_one = true;
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}
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return consumed_at_least_one;
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}
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bool FormatParser::consume_specifier(FormatSpecifier& specifier)
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{
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VERIFY(!next_is('}'));
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if (!consume_specific('{'))
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return false;
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if (!consume_number(specifier.index))
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specifier.index = use_next_index;
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if (consume_specific(':')) {
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const auto begin = tell();
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size_t level = 1;
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while (level > 0) {
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VERIFY(!is_eof());
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if (consume_specific('{')) {
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++level;
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continue;
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}
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if (consume_specific('}')) {
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--level;
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continue;
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}
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consume();
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}
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specifier.flags = m_input.substring_view(begin, tell() - begin - 1);
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} else {
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if (!consume_specific('}'))
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VERIFY_NOT_REACHED();
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specifier.flags = "";
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}
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return true;
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}
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bool FormatParser::consume_replacement_field(size_t& index)
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{
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if (!consume_specific('{'))
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return false;
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if (!consume_number(index))
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index = use_next_index;
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if (!consume_specific('}'))
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VERIFY_NOT_REACHED();
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return true;
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}
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void FormatBuilder::put_padding(char fill, size_t amount)
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{
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for (size_t i = 0; i < amount; ++i)
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m_builder.append(fill);
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}
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void FormatBuilder::put_literal(StringView value)
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{
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for (size_t i = 0; i < value.length(); ++i) {
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m_builder.append(value[i]);
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if (value[i] == '{' || value[i] == '}')
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++i;
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}
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}
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void FormatBuilder::put_string(
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StringView value,
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Align align,
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size_t min_width,
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size_t max_width,
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char fill)
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{
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const auto used_by_string = min(max_width, value.length());
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const auto used_by_padding = max(min_width, used_by_string) - used_by_string;
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if (used_by_string < value.length())
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value = value.substring_view(0, used_by_string);
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if (align == Align::Left || align == Align::Default) {
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m_builder.append(value);
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put_padding(fill, used_by_padding);
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} else if (align == Align::Center) {
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const auto used_by_left_padding = used_by_padding / 2;
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const auto used_by_right_padding = ceil_div<size_t, size_t>(used_by_padding, 2);
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put_padding(fill, used_by_left_padding);
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m_builder.append(value);
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put_padding(fill, used_by_right_padding);
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} else if (align == Align::Right) {
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put_padding(fill, used_by_padding);
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m_builder.append(value);
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}
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}
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void FormatBuilder::put_u64(
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u64 value,
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u8 base,
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bool prefix,
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bool upper_case,
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bool zero_pad,
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Align align,
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size_t min_width,
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char fill,
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SignMode sign_mode,
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bool is_negative)
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{
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if (align == Align::Default)
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align = Align::Right;
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Array<u8, 128> buffer;
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const auto used_by_digits = convert_unsigned_to_string(value, buffer, base, upper_case);
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size_t used_by_prefix = 0;
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if (align == Align::Right && zero_pad) {
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// We want String::formatted("{:#08x}", 32) to produce '0x00000020' instead of '0x000020'. This
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// behaviour differs from both fmtlib and printf, but is more intuitive.
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used_by_prefix = 0;
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} else {
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if (is_negative || sign_mode != SignMode::OnlyIfNeeded)
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used_by_prefix += 1;
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if (prefix) {
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if (base == 8)
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used_by_prefix += 1;
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else if (base == 16)
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used_by_prefix += 2;
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else if (base == 2)
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used_by_prefix += 2;
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}
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}
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const auto used_by_field = used_by_prefix + used_by_digits;
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const auto used_by_padding = max(used_by_field, min_width) - used_by_field;
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const auto put_prefix = [&]() {
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if (is_negative)
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m_builder.append('-');
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else if (sign_mode == SignMode::Always)
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m_builder.append('+');
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else if (sign_mode == SignMode::Reserved)
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m_builder.append(' ');
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if (prefix) {
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if (base == 2) {
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if (upper_case)
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m_builder.append("0B");
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else
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m_builder.append("0b");
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} else if (base == 8) {
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m_builder.append("0");
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} else if (base == 16) {
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if (upper_case)
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m_builder.append("0X");
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else
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m_builder.append("0x");
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}
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}
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};
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const auto put_digits = [&]() {
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for (size_t i = 0; i < used_by_digits; ++i)
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m_builder.append(buffer[i]);
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};
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if (align == Align::Left) {
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const auto used_by_right_padding = used_by_padding;
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put_prefix();
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put_digits();
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put_padding(fill, used_by_right_padding);
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} else if (align == Align::Center) {
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const auto used_by_left_padding = used_by_padding / 2;
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const auto used_by_right_padding = ceil_div<size_t, size_t>(used_by_padding, 2);
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put_padding(fill, used_by_left_padding);
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put_prefix();
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put_digits();
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put_padding(fill, used_by_right_padding);
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} else if (align == Align::Right) {
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const auto used_by_left_padding = used_by_padding;
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if (zero_pad) {
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put_prefix();
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put_padding('0', used_by_left_padding);
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put_digits();
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} else {
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put_padding(fill, used_by_left_padding);
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put_prefix();
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put_digits();
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}
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}
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}
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void FormatBuilder::put_i64(
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i64 value,
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u8 base,
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bool prefix,
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bool upper_case,
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bool zero_pad,
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Align align,
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size_t min_width,
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char fill,
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SignMode sign_mode)
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{
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const auto is_negative = value < 0;
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value = is_negative ? -value : value;
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put_u64(static_cast<u64>(value), base, prefix, upper_case, zero_pad, align, min_width, fill, sign_mode, is_negative);
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}
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#ifndef KERNEL
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void FormatBuilder::put_f64(
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double value,
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u8 base,
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bool upper_case,
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Align align,
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size_t min_width,
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size_t precision,
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char fill,
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SignMode sign_mode)
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{
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StringBuilder string_builder;
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FormatBuilder format_builder { string_builder };
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format_builder.put_i64(static_cast<i64>(value), base, false, upper_case, false, Align::Right, 0, ' ', sign_mode);
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string_builder.append('.');
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if (precision > 0) {
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// FIXME: This is a terrible approximation but doing it properly would be a lot of work. If someone is up for that, a good
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// place to start would be the following video from CppCon 2019:
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// https://youtu.be/4P_kbF0EbZM (Stephan T. Lavavej “Floating-Point <charconv>: Making Your Code 10x Faster With C++17's Final Boss”)
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value -= static_cast<i64>(value);
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if (value < 0)
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value = -value;
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for (u32 i = 0; i < precision; ++i)
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value *= 10;
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format_builder.put_u64(static_cast<u64>(value), base, false, upper_case, true, Align::Right, precision);
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// FIXME: Cut off trailing zeroes by default?
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}
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put_string(string_builder.string_view(), align, min_width, NumericLimits<size_t>::max(), fill);
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}
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#endif
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void vformat(StringBuilder& builder, StringView fmtstr, TypeErasedFormatParams params)
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{
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FormatBuilder fmtbuilder { builder };
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FormatParser parser { fmtstr };
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vformat_impl(params, fmtbuilder, parser);
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}
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void vformat(const LogStream& stream, StringView fmtstr, TypeErasedFormatParams params)
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{
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StringBuilder builder;
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vformat(builder, fmtstr, params);
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stream << builder.to_string();
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}
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void StandardFormatter::parse(TypeErasedFormatParams& params, FormatParser& parser)
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{
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if (StringView { "<^>" }.contains(parser.peek(1))) {
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VERIFY(!parser.next_is(is_any_of("{}")));
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m_fill = parser.consume();
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}
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if (parser.consume_specific('<'))
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m_align = FormatBuilder::Align::Left;
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else if (parser.consume_specific('^'))
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m_align = FormatBuilder::Align::Center;
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else if (parser.consume_specific('>'))
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m_align = FormatBuilder::Align::Right;
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if (parser.consume_specific('-'))
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m_sign_mode = FormatBuilder::SignMode::OnlyIfNeeded;
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else if (parser.consume_specific('+'))
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m_sign_mode = FormatBuilder::SignMode::Always;
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else if (parser.consume_specific(' '))
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m_sign_mode = FormatBuilder::SignMode::Reserved;
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if (parser.consume_specific('#'))
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m_alternative_form = true;
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if (parser.consume_specific('0'))
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m_zero_pad = true;
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if (size_t index = 0; parser.consume_replacement_field(index)) {
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if (index == use_next_index)
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index = params.take_next_index();
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m_width = params.parameters().at(index).to_size();
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} else if (size_t width = 0; parser.consume_number(width)) {
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m_width = width;
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}
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if (parser.consume_specific('.')) {
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if (size_t index = 0; parser.consume_replacement_field(index)) {
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if (index == use_next_index)
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index = params.take_next_index();
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m_precision = params.parameters().at(index).to_size();
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} else if (size_t precision = 0; parser.consume_number(precision)) {
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m_precision = precision;
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}
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}
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if (parser.consume_specific('b'))
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m_mode = Mode::Binary;
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else if (parser.consume_specific('B'))
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m_mode = Mode::BinaryUppercase;
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else if (parser.consume_specific('d'))
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m_mode = Mode::Decimal;
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else if (parser.consume_specific('o'))
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m_mode = Mode::Octal;
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else if (parser.consume_specific('x'))
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m_mode = Mode::Hexadecimal;
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else if (parser.consume_specific('X'))
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m_mode = Mode::HexadecimalUppercase;
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else if (parser.consume_specific('c'))
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m_mode = Mode::Character;
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else if (parser.consume_specific('s'))
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m_mode = Mode::String;
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else if (parser.consume_specific('p'))
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m_mode = Mode::Pointer;
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else if (parser.consume_specific('f'))
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m_mode = Mode::Float;
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else if (parser.consume_specific('a'))
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m_mode = Mode::Hexfloat;
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else if (parser.consume_specific('A'))
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m_mode = Mode::HexfloatUppercase;
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if (!parser.is_eof())
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dbgln("{} did not consume '{}'", __PRETTY_FUNCTION__, parser.remaining());
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VERIFY(parser.is_eof());
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}
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void Formatter<StringView>::format(FormatBuilder& builder, StringView value)
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{
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if (m_sign_mode != FormatBuilder::SignMode::Default)
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VERIFY_NOT_REACHED();
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if (m_alternative_form)
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VERIFY_NOT_REACHED();
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if (m_zero_pad)
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VERIFY_NOT_REACHED();
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if (m_mode != Mode::Default && m_mode != Mode::String && m_mode != Mode::Character)
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VERIFY_NOT_REACHED();
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if (m_width.has_value() && m_precision.has_value())
|
|
VERIFY_NOT_REACHED();
|
|
|
|
m_width = m_width.value_or(0);
|
|
m_precision = m_precision.value_or(NumericLimits<size_t>::max());
|
|
|
|
builder.put_string(value, m_align, m_width.value(), m_precision.value(), m_fill);
|
|
}
|
|
|
|
void Formatter<FormatString>::vformat(FormatBuilder& builder, StringView fmtstr, TypeErasedFormatParams params)
|
|
{
|
|
return Formatter<String>::format(builder, String::vformatted(fmtstr, params));
|
|
}
|
|
|
|
template<typename T>
|
|
void Formatter<T, typename EnableIf<IsIntegral<T>::value>::Type>::format(FormatBuilder& builder, T value)
|
|
{
|
|
if (m_mode == Mode::Character) {
|
|
// FIXME: We just support ASCII for now, in the future maybe unicode?
|
|
VERIFY(value >= 0 && value <= 127);
|
|
|
|
m_mode = Mode::String;
|
|
|
|
Formatter<StringView> formatter { *this };
|
|
return formatter.format(builder, StringView { reinterpret_cast<const char*>(&value), 1 });
|
|
}
|
|
|
|
if (m_precision.has_value())
|
|
VERIFY_NOT_REACHED();
|
|
|
|
if (m_mode == Mode::Pointer) {
|
|
if (m_sign_mode != FormatBuilder::SignMode::Default)
|
|
VERIFY_NOT_REACHED();
|
|
if (m_align != FormatBuilder::Align::Default)
|
|
VERIFY_NOT_REACHED();
|
|
if (m_alternative_form)
|
|
VERIFY_NOT_REACHED();
|
|
if (m_width.has_value())
|
|
VERIFY_NOT_REACHED();
|
|
|
|
m_mode = Mode::Hexadecimal;
|
|
m_alternative_form = true;
|
|
m_width = 2 * sizeof(void*);
|
|
m_zero_pad = true;
|
|
}
|
|
|
|
u8 base = 0;
|
|
bool upper_case = false;
|
|
if (m_mode == Mode::Binary) {
|
|
base = 2;
|
|
} else if (m_mode == Mode::BinaryUppercase) {
|
|
base = 2;
|
|
upper_case = true;
|
|
} else if (m_mode == Mode::Octal) {
|
|
base = 8;
|
|
} else if (m_mode == Mode::Decimal || m_mode == Mode::Default) {
|
|
base = 10;
|
|
} else if (m_mode == Mode::Hexadecimal) {
|
|
base = 16;
|
|
} else if (m_mode == Mode::HexadecimalUppercase) {
|
|
base = 16;
|
|
upper_case = true;
|
|
} else {
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
m_width = m_width.value_or(0);
|
|
|
|
if (IsSame<typename MakeUnsigned<T>::Type, T>::value)
|
|
builder.put_u64(value, base, m_alternative_form, upper_case, m_zero_pad, m_align, m_width.value(), m_fill, m_sign_mode);
|
|
else
|
|
builder.put_i64(value, base, m_alternative_form, upper_case, m_zero_pad, m_align, m_width.value(), m_fill, m_sign_mode);
|
|
}
|
|
|
|
void Formatter<char>::format(FormatBuilder& builder, char value)
|
|
{
|
|
if (m_mode == Mode::Binary || m_mode == Mode::BinaryUppercase || m_mode == Mode::Decimal || m_mode == Mode::Octal || m_mode == Mode::Hexadecimal || m_mode == Mode::HexadecimalUppercase) {
|
|
// Trick: signed char != char. (Sometimes weird features are actually helpful.)
|
|
Formatter<signed char> formatter { *this };
|
|
return formatter.format(builder, static_cast<signed char>(value));
|
|
} else {
|
|
Formatter<StringView> formatter { *this };
|
|
return formatter.format(builder, { &value, 1 });
|
|
}
|
|
}
|
|
void Formatter<bool>::format(FormatBuilder& builder, bool value)
|
|
{
|
|
if (m_mode == Mode::Binary || m_mode == Mode::BinaryUppercase || m_mode == Mode::Decimal || m_mode == Mode::Octal || m_mode == Mode::Hexadecimal || m_mode == Mode::HexadecimalUppercase) {
|
|
Formatter<u8> formatter { *this };
|
|
return formatter.format(builder, static_cast<u8>(value));
|
|
} else {
|
|
Formatter<StringView> formatter { *this };
|
|
return formatter.format(builder, value ? "true" : "false");
|
|
}
|
|
}
|
|
#ifndef KERNEL
|
|
void Formatter<double>::format(FormatBuilder& builder, double value)
|
|
{
|
|
u8 base;
|
|
bool upper_case;
|
|
if (m_mode == Mode::Default || m_mode == Mode::Float) {
|
|
base = 10;
|
|
upper_case = false;
|
|
} else if (m_mode == Mode::Hexfloat) {
|
|
base = 16;
|
|
upper_case = false;
|
|
} else if (m_mode == Mode::HexfloatUppercase) {
|
|
base = 16;
|
|
upper_case = true;
|
|
} else {
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
m_width = m_width.value_or(0);
|
|
m_precision = m_precision.value_or(6);
|
|
|
|
builder.put_f64(value, base, upper_case, m_align, m_width.value(), m_precision.value(), m_fill, m_sign_mode);
|
|
}
|
|
void Formatter<float>::format(FormatBuilder& builder, float value)
|
|
{
|
|
Formatter<double> formatter { *this };
|
|
formatter.format(builder, value);
|
|
}
|
|
#endif
|
|
|
|
#ifndef KERNEL
|
|
void vout(FILE* file, StringView fmtstr, TypeErasedFormatParams params, bool newline)
|
|
{
|
|
StringBuilder builder;
|
|
vformat(builder, fmtstr, params);
|
|
|
|
if (newline)
|
|
builder.append('\n');
|
|
|
|
const auto string = builder.string_view();
|
|
const auto retval = ::fwrite(string.characters_without_null_termination(), 1, string.length(), file);
|
|
VERIFY(static_cast<size_t>(retval) == string.length());
|
|
}
|
|
#endif
|
|
|
|
static bool is_debug_enabled = true;
|
|
|
|
void set_debug_enabled(bool value)
|
|
{
|
|
is_debug_enabled = value;
|
|
}
|
|
|
|
void vdbgln(StringView fmtstr, TypeErasedFormatParams params)
|
|
{
|
|
if (!is_debug_enabled)
|
|
return;
|
|
|
|
StringBuilder builder;
|
|
|
|
#ifdef __serenity__
|
|
# ifdef KERNEL
|
|
if (Kernel::Processor::is_initialized() && Kernel::Thread::current()) {
|
|
auto& thread = *Kernel::Thread::current();
|
|
builder.appendff("\033[34;1m[#{} {}({}:{})]\033[0m: ", Kernel::Processor::id(), thread.process().name(), thread.pid().value(), thread.tid().value());
|
|
} else {
|
|
builder.appendff("\033[34;1m[#{} Kernel]\033[0m: ", Kernel::Processor::id());
|
|
}
|
|
# else
|
|
static TriState got_process_name = TriState::Unknown;
|
|
static char process_name_buffer[256];
|
|
|
|
if (got_process_name == TriState::Unknown) {
|
|
if (get_process_name(process_name_buffer, sizeof(process_name_buffer)) == 0)
|
|
got_process_name = TriState::True;
|
|
else
|
|
got_process_name = TriState::False;
|
|
}
|
|
if (got_process_name == TriState::True)
|
|
builder.appendff("\033[33;1m{}({})\033[0m: ", process_name_buffer, getpid());
|
|
# endif
|
|
#endif
|
|
|
|
vformat(builder, fmtstr, params);
|
|
builder.append('\n');
|
|
|
|
const auto string = builder.string_view();
|
|
|
|
dbgputstr(string.characters_without_null_termination(), string.length());
|
|
}
|
|
|
|
#ifdef KERNEL
|
|
void vdmesgln(StringView fmtstr, TypeErasedFormatParams params)
|
|
{
|
|
StringBuilder builder;
|
|
|
|
# ifdef __serenity__
|
|
if (Kernel::Processor::is_initialized() && Kernel::Thread::current()) {
|
|
auto& thread = *Kernel::Thread::current();
|
|
builder.appendff("\033[34;1m[{}({}:{})]\033[0m: ", thread.process().name(), thread.pid().value(), thread.tid().value());
|
|
} else {
|
|
builder.appendff("\033[34;1m[Kernel]\033[0m: ");
|
|
}
|
|
# endif
|
|
|
|
vformat(builder, fmtstr, params);
|
|
builder.append('\n');
|
|
|
|
const auto string = builder.string_view();
|
|
kernelputstr(string.characters_without_null_termination(), string.length());
|
|
}
|
|
#endif
|
|
|
|
template struct Formatter<unsigned char, void>;
|
|
template struct Formatter<unsigned short, void>;
|
|
template struct Formatter<unsigned int, void>;
|
|
template struct Formatter<unsigned long, void>;
|
|
template struct Formatter<unsigned long long, void>;
|
|
template struct Formatter<short, void>;
|
|
template struct Formatter<int, void>;
|
|
template struct Formatter<long, void>;
|
|
template struct Formatter<long long, void>;
|
|
template struct Formatter<signed char, void>;
|
|
|
|
} // namespace AK
|