libc/test/UnitTest/PrintfMatcher.cpp

   1 //===-- PrintfMatcher.cpp ---------------------------------------*- 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 #include "PrintfMatcher.h"
  10
  11 #include "src/__support/FPUtil/FPBits.h"
  12 #include "src/stdio/printf_core/core_structs.h"
  13
  14 #include "test/UnitTest/StringUtils.h"
  15 #include "test/UnitTest/Test.h"
  16
  17 #include <stdint.h>
  18
  19 namespace LIBC_NAMESPACE {
  20 namespace testing {
  21
  22 using printf_core::FormatFlags;
  23 using printf_core::FormatSection;
  24 using printf_core::LengthModifier;
  25
  26 bool FormatSectionMatcher::match(FormatSection actualValue) {
  27   actual = actualValue;
  28   return expected == actual;
  29 }
  30
  31 namespace {
  32
  33 #define IF_FLAG_SHOW_FLAG(flag_name)                                           \
  34   do {                                                                         \
  35     if ((form.flags & FormatFlags::flag_name) == FormatFlags::flag_name)       \
  36       tlog << "\n\t\t" << #flag_name;                                          \
  37   } while (false)
  38 #define CASE_LM(lm)                                                            \
  39   case (LengthModifier::lm):                                                   \
  40     tlog << #lm;                                                               \
  41     break
  42
  43 static void display(FormatSection form) {
  44   tlog << "Raw String (len " << form.raw_string.size() << "): \"";
  45   for (size_t i = 0; i < form.raw_string.size(); ++i) {
  46     tlog << form.raw_string[i];
  47   }
  48   tlog << "\"";
  49   if (form.has_conv) {
  50     tlog << "\n\tHas Conv\n\tFlags:";
  51     IF_FLAG_SHOW_FLAG(LEFT_JUSTIFIED);
  52     IF_FLAG_SHOW_FLAG(FORCE_SIGN);
  53     IF_FLAG_SHOW_FLAG(SPACE_PREFIX);
  54     IF_FLAG_SHOW_FLAG(ALTERNATE_FORM);
  55     IF_FLAG_SHOW_FLAG(LEADING_ZEROES);
  56     tlog << "\n";
  57     tlog << "\tmin width: " << form.min_width << "\n";
  58     tlog << "\tprecision: " << form.precision << "\n";
  59     tlog << "\tlength modifier: ";
  60     switch (form.length_modifier) {
  61       CASE_LM(none);
  62       CASE_LM(l);
  63       CASE_LM(ll);
  64       CASE_LM(h);
  65       CASE_LM(hh);
  66       CASE_LM(j);
  67       CASE_LM(z);
  68       CASE_LM(t);
  69       CASE_LM(L);
  70     }
  71     tlog << "\n";
  72     tlog << "\tconversion name: " << form.conv_name << "\n";
  73     if (form.conv_name == 'p' || form.conv_name == 'n' || form.conv_name == 's')
  74       tlog << "\tpointer value: "
  75            << int_to_hex<uintptr_t>(
  76                   reinterpret_cast<uintptr_t>(form.conv_val_ptr))
  77            << "\n";
  78     else if (form.conv_name != '%')
  79       tlog << "\tvalue: "
  80            << int_to_hex<fputil::FPBits<long double>::UIntType>(
  81                   form.conv_val_raw)
  82            << "\n";
  83   }
  84 }
  85 } // anonymous namespace
  86
  87 void FormatSectionMatcher::explainError() {
  88   tlog << "expected format section: ";
  89   display(expected);
  90   tlog << '\n';
  91   tlog << "actual format section  : ";
  92   display(actual);
  93   tlog << '\n';
  94 }
  95
  96 } // namespace testing
  97 } // namespace LIBC_NAMESPACE