libc/src/stdio/printf_core/write_int_converter.h

   1 //===-- Write integer 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_WRITE_INT_CONVERTER_H
  10 #define LLVM_LIBC_SRC_STDIO_PRINTF_CORE_WRITE_INT_CONVERTER_H
  11
  12 #include "src/__support/macros/config.h"
  13 #include "src/stdio/printf_core/core_structs.h"
  14 #include "src/stdio/printf_core/writer.h"
  15
  16 #include <inttypes.h>
  17 #include <stddef.h>
  18
  19 namespace LIBC_NAMESPACE_DECL {
  20 namespace printf_core {
  21
  22 LIBC_INLINE int convert_write_int(Writer *writer,
  23                                   const FormatSection &to_conv) {
  24
  25 #ifndef LIBC_COPT_PRINTF_NO_NULLPTR_CHECKS
  26   // This is an additional check added by LLVM-libc.
  27   if (to_conv.conv_val_ptr == nullptr)
  28     return NULLPTR_WRITE_ERROR;
  29 #endif // LIBC_COPT_PRINTF_NO_NULLPTR_CHECKS
  30
  31   int written = writer->get_chars_written();
  32
  33   switch (to_conv.length_modifier) {
  34   case LengthModifier::none:
  35     *reinterpret_cast<int *>(to_conv.conv_val_ptr) = written;
  36     break;
  37   case LengthModifier::l:
  38     *reinterpret_cast<long *>(to_conv.conv_val_ptr) = written;
  39     break;
  40   case LengthModifier::ll:
  41   case LengthModifier::L:
  42     *reinterpret_cast<long long *>(to_conv.conv_val_ptr) = written;
  43     break;
  44   case LengthModifier::h:
  45     *reinterpret_cast<short *>(to_conv.conv_val_ptr) =
  46         static_cast<short>(written);
  47     break;
  48   case LengthModifier::hh:
  49     *reinterpret_cast<signed char *>(to_conv.conv_val_ptr) =
  50         static_cast<signed char>(written);
  51     break;
  52   case LengthModifier::z:
  53     *reinterpret_cast<size_t *>(to_conv.conv_val_ptr) = written;
  54     break;
  55   case LengthModifier::t:
  56     *reinterpret_cast<ptrdiff_t *>(to_conv.conv_val_ptr) = written;
  57     break;
  58   case LengthModifier::j:
  59   case LengthModifier::w:
  60   case LengthModifier::wf:
  61     *reinterpret_cast<uintmax_t *>(to_conv.conv_val_ptr) = written;
  62     break;
  63   }
  64   return WRITE_OK;
  65 }
  66
  67 } // namespace printf_core
  68 } // namespace LIBC_NAMESPACE_DECL
  69
  70 #endif // LLVM_LIBC_SRC_STDIO_PRINTF_CORE_WRITE_INT_CONVERTER_H