contrib/llvm/tools/lldb/source/Interpreter/OptionGroupWatchpoint.cpp

   1 //===-- OptionGroupWatchpoint.cpp -------------------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "lldb/Interpreter/OptionGroupWatchpoint.h"
  11
  12 // C Includes
  13 // C++ Includes
  14 // Other libraries and framework includes
  15 // Project includes
  16 #include "lldb/Interpreter/Args.h"
  17 #include "lldb/Utility/Utils.h"
  18 #include "lldb/lldb-enumerations.h"
  19
  20 using namespace lldb;
  21 using namespace lldb_private;
  22
  23 static OptionEnumValueElement g_watch_type[] = {
  24     {OptionGroupWatchpoint::eWatchRead, "read", "Watch for read"},
  25     {OptionGroupWatchpoint::eWatchWrite, "write", "Watch for write"},
  26     {OptionGroupWatchpoint::eWatchReadWrite, "read_write",
  27      "Watch for read/write"},
  28     {0, nullptr, nullptr}};
  29
  30 static OptionEnumValueElement g_watch_size[] = {
  31     {1, "1", "Watch for byte size of 1"},
  32     {2, "2", "Watch for byte size of 2"},
  33     {4, "4", "Watch for byte size of 4"},
  34     {8, "8", "Watch for byte size of 8"},
  35     {0, nullptr, nullptr}};
  36
  37 static OptionDefinition g_option_table[] = {
  38     {LLDB_OPT_SET_1, false, "watch", 'w', OptionParser::eRequiredArgument,
  39      nullptr, g_watch_type, 0, eArgTypeWatchType,
  40      "Specify the type of watching to perform."},
  41     {LLDB_OPT_SET_1, false, "size", 's', OptionParser::eRequiredArgument,
  42      nullptr, g_watch_size, 0, eArgTypeByteSize,
  43      "Number of bytes to use to watch a region."}};
  44
  45 bool OptionGroupWatchpoint::IsWatchSizeSupported(uint32_t watch_size) {
  46   for (uint32_t i = 0; i < llvm::array_lengthof(g_watch_size); ++i) {
  47     if (g_watch_size[i].value == 0)
  48       break;
  49     if (watch_size == g_watch_size[i].value)
  50       return true;
  51   }
  52   return false;
  53 }
  54
  55 OptionGroupWatchpoint::OptionGroupWatchpoint() : OptionGroup() {}
  56
  57 OptionGroupWatchpoint::~OptionGroupWatchpoint() {}
  58
  59 Error OptionGroupWatchpoint::SetOptionValue(
  60     uint32_t option_idx, llvm::StringRef option_arg,
  61     ExecutionContext *execution_context) {
  62   Error error;
  63   const int short_option = g_option_table[option_idx].short_option;
  64   switch (short_option) {
  65   case 'w': {
  66     WatchType tmp_watch_type;
  67     tmp_watch_type = (WatchType)Args::StringToOptionEnum(
  68         option_arg, g_option_table[option_idx].enum_values, 0, error);
  69     if (error.Success()) {
  70       watch_type = tmp_watch_type;
  71       watch_type_specified = true;
  72     }
  73     break;
  74   }
  75   case 's':
  76     watch_size = (uint32_t)Args::StringToOptionEnum(
  77         option_arg, g_option_table[option_idx].enum_values, 0, error);
  78     break;
  79
  80   default:
  81     error.SetErrorStringWithFormat("unrecognized short option '%c'",
  82                                    short_option);
  83     break;
  84   }
  85
  86   return error;
  87 }
  88
  89 void OptionGroupWatchpoint::OptionParsingStarting(
  90     ExecutionContext *execution_context) {
  91   watch_type_specified = false;
  92   watch_type = eWatchInvalid;
  93   watch_size = 0;
  94 }
  95
  96 llvm::ArrayRef<OptionDefinition> OptionGroupWatchpoint::GetDefinitions() {
  97   return llvm::makeArrayRef(g_option_table);
  98 }