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/__support/macros/config.h"
  13 #include "src/stdio/printf_core/core_structs.h"
  14
  15 #include "test/UnitTest/StringUtils.h"
  16 #include "test/UnitTest/Test.h"
  17
  18 #include <stdint.h>
  19
  20 namespace LIBC_NAMESPACE_DECL {
  21 namespace testing {
  22
  23 using printf_core::FormatFlags;
  24 using printf_core::FormatSection;
  25 using printf_core::LengthModifier;
  26
  27 bool FormatSectionMatcher::match(FormatSection actualValue) {
  28   actual = actualValue;
  29   return expected == actual;
  30 }
  31
  32 namespace {
  33
  34 #define IF_FLAG_SHOW_FLAG(flag_name)                                           \
  35   do {                                                                         \
  36     if ((form.flags & FormatFlags::flag_name) == FormatFlags::flag_name)       \
  37       tlog << "\n\t\t" << #flag_name;                                          \
  38   } while (false)
  39 #define CASE_LM(lm)                                                            \
  40   case (LengthModifier::lm):                                                   \
  41     tlog << #lm;                                                               \
  42     break
  43 #define CASE_LM_BIT_WIDTH(lm, bw)                                              \
  44   case (LengthModifier::lm):                                                   \
  45     tlog << #lm << "\n\tbit width: :" << bw;                                   \
  46     break
  47
  48 static void display(FormatSection form) {
  49   tlog << "Raw String (len " << form.raw_string.size() << "): \"";
  50   for (size_t i = 0; i < form.raw_string.size(); ++i) {
  51     tlog << form.raw_string[i];
  52   }
  53   tlog << "\"";
  54   if (form.has_conv) {
  55     tlog << "\n\tHas Conv\n\tFlags:";
  56     IF_FLAG_SHOW_FLAG(LEFT_JUSTIFIED);
  57     IF_FLAG_SHOW_FLAG(FORCE_SIGN);
  58     IF_FLAG_SHOW_FLAG(SPACE_PREFIX);
  59     IF_FLAG_SHOW_FLAG(ALTERNATE_FORM);
  60     IF_FLAG_SHOW_FLAG(LEADING_ZEROES);
  61     tlog << "\n";
  62     tlog << "\tmin width: " << form.min_width << "\n";
  63     tlog << "\tprecision: " << form.precision << "\n";
  64     tlog << "\tlength modifier: ";
  65     switch (form.length_modifier) {
  66       CASE_LM(none);
  67       CASE_LM(l);
  68       CASE_LM(ll);
  69       CASE_LM(h);
  70       CASE_LM(hh);
  71       CASE_LM(j);
  72       CASE_LM(z);
  73       CASE_LM(t);
  74       CASE_LM(L);
  75       CASE_LM_BIT_WIDTH(w, form.bit_width);
  76       CASE_LM_BIT_WIDTH(wf, form.bit_width);
  77     }
  78     tlog << "\n";
  79     tlog << "\tconversion name: " << form.conv_name << "\n";
  80     if (form.conv_name == 'p' || form.conv_name == 'n' || form.conv_name == 's')
  81       tlog << "\tpointer value: "
  82            << int_to_hex<uintptr_t>(
  83                   reinterpret_cast<uintptr_t>(form.conv_val_ptr))
  84            << "\n";
  85     else if (form.conv_name != '%')
  86       tlog << "\tvalue: "
  87            << int_to_hex<fputil::FPBits<long double>::StorageType>(
  88                   form.conv_val_raw)
  89            << "\n";
  90   }
  91 }
  92 } // anonymous namespace
  93
  94 void FormatSectionMatcher::explainError() {
  95   tlog << "expected format section: ";
  96   display(expected);
  97   tlog << '\n';
  98   tlog << "actual format section  : ";
  99   display(actual);
 100   tlog << '\n';
 101 }
 102
 103 } // namespace testing
 104 } // namespace LIBC_NAMESPACE_DECL