libc/test/UnitTest/ScanfMatcher.cpp

   1 //===-- ScanfMatcher.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 "ScanfMatcher.h"
  10
  11 #include "src/__support/FPUtil/FPBits.h"
  12 #include "src/__support/macros/config.h"
  13 #include "src/stdio/scanf_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 scanf_core::FormatFlags;
  24 using scanf_core::FormatSection;
  25 using scanf_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
  44 void display(FormatSection form) {
  45   tlog << "Raw String (len " << form.raw_string.size() << "): \"";
  46   for (size_t i = 0; i < form.raw_string.size(); ++i) {
  47     tlog << form.raw_string[i];
  48   }
  49   tlog << "\"";
  50   if (form.has_conv) {
  51     tlog << "\n\tHas Conv\n\tFlags:";
  52     IF_FLAG_SHOW_FLAG(NO_WRITE);
  53     IF_FLAG_SHOW_FLAG(ALLOCATE);
  54     tlog << "\n";
  55     tlog << "\tmax width: " << form.max_width << "\n";
  56     tlog << "\tlength modifier: ";
  57     switch (form.length_modifier) {
  58       CASE_LM(NONE);
  59       CASE_LM(l);
  60       CASE_LM(ll);
  61       CASE_LM(h);
  62       CASE_LM(hh);
  63       CASE_LM(j);
  64       CASE_LM(z);
  65       CASE_LM(t);
  66       CASE_LM(L);
  67     }
  68     tlog << "\n";
  69     // If the pointer is used (NO_WRITE is not set and the conversion isn't %).
  70     if (((form.flags & FormatFlags::NO_WRITE) == 0) &&
  71         (form.conv_name != '%')) {
  72       tlog << "\tpointer value: "
  73            << int_to_hex<uintptr_t>(
  74                   reinterpret_cast<uintptr_t>(form.output_ptr))
  75            << "\n";
  76     }
  77
  78     tlog << "\tconversion name: " << form.conv_name << "\n";
  79
  80     if (form.conv_name == '[') {
  81       tlog << "\t\t";
  82       for (size_t i = 0; i < 256 /* char max */; ++i) {
  83         if (form.scan_set.test(i)) {
  84           tlog << static_cast<char>(i);
  85         }
  86       }
  87       tlog << "\n\t]\n";
  88     }
  89   }
  90 }
  91 } // anonymous namespace
  92
  93 void FormatSectionMatcher::explainError() {
  94   tlog << "expected format section: ";
  95   display(expected);
  96   tlog << '\n';
  97   tlog << "actual format section  : ";
  98   display(actual);
  99   tlog << '\n';
 100 }
 101
 102 } // namespace testing
 103 } // namespace LIBC_NAMESPACE_DECL