libc/src/stdio/printf_core/ptr_converter.h

   1 //===-- Pointer Converter for printf ----------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLVM_LIBC_SRC_STDIO_PRINTF_CORE_PTR_CONVERTER_H
  10 #define LLVM_LIBC_SRC_STDIO_PRINTF_CORE_PTR_CONVERTER_H
  11
  12 #include "src/__support/CPP/string_view.h"
  13 #include "src/__support/common.h"
  14 #include "src/stdio/printf_core/converter_utils.h"
  15 #include "src/stdio/printf_core/core_structs.h"
  16 #include "src/stdio/printf_core/int_converter.h"
  17 #include "src/stdio/printf_core/string_converter.h"
  18 #include "src/stdio/printf_core/writer.h"
  19
  20 namespace LIBC_NAMESPACE {
  21 namespace printf_core {
  22
  23 LIBC_INLINE int convert_pointer(Writer *writer, const FormatSection &to_conv) {
  24   FormatSection new_conv = to_conv;
  25
  26   if (to_conv.conv_val_ptr == nullptr) {
  27     constexpr char NULLPTR_STR[] = "(nullptr)";
  28     new_conv.conv_name = 's';
  29     new_conv.conv_val_ptr = const_cast<char *>(NULLPTR_STR);
  30     return convert_string(writer, new_conv);
  31   }
  32   new_conv.conv_name = 'x';
  33   new_conv.flags =
  34       static_cast<FormatFlags>(to_conv.flags | FormatFlags::ALTERNATE_FORM);
  35   new_conv.length_modifier = LengthModifier::t;
  36   new_conv.conv_val_raw = reinterpret_cast<uintptr_t>(to_conv.conv_val_ptr);
  37   return convert_int(writer, new_conv);
  38 }
  39
  40 } // namespace printf_core
  41 } // namespace LIBC_NAMESPACE
  42
  43 #endif // LLVM_LIBC_SRC_STDIO_PRINTF_CORE_PTR_CONVERTER_H