lldb/source/Interpreter/OptionGroupWatchpoint.cpp

   1 //===-- OptionGroupWatchpoint.cpp -----------------------------------------===//
   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 "lldb/Interpreter/OptionGroupWatchpoint.h"
  10
  11 #include "lldb/Host/OptionParser.h"
  12 #include "lldb/Interpreter/OptionArgParser.h"
  13 #include "lldb/Target/Language.h"
  14 #include "lldb/lldb-enumerations.h"
  15
  16 using namespace lldb;
  17 using namespace lldb_private;
  18
  19 static constexpr OptionEnumValueElement g_watch_type[] = {
  20     {
  21         OptionGroupWatchpoint::eWatchRead,
  22         "read",
  23         "Watch for read",
  24     },
  25     {
  26         OptionGroupWatchpoint::eWatchWrite,
  27         "write",
  28         "Watch for write",
  29     },
  30     {
  31         OptionGroupWatchpoint::eWatchModify,
  32         "modify",
  33         "Watch for modifications",
  34     },
  35     {
  36         OptionGroupWatchpoint::eWatchReadWrite,
  37         "read_write",
  38         "Watch for read/write",
  39     },
  40 };
  41
  42 static constexpr OptionDefinition g_option_table[] = {
  43     {LLDB_OPT_SET_1, false, "watch", 'w', OptionParser::eRequiredArgument,
  44      nullptr, OptionEnumValues(g_watch_type), 0, eArgTypeWatchType,
  45      "Specify the type of watching to perform."},
  46     {LLDB_OPT_SET_1, false, "size", 's', OptionParser::eRequiredArgument,
  47      nullptr, {}, 0, eArgTypeByteSize,
  48      "Number of bytes to use to watch a region."},
  49     {LLDB_OPT_SET_2,
  50      false,
  51      "language",
  52      'l',
  53      OptionParser::eRequiredArgument,
  54      nullptr,
  55      {},
  56      0,
  57      eArgTypeLanguage,
  58      "Language of expression to run"}};
  59
  60 Status
  61 OptionGroupWatchpoint::SetOptionValue(uint32_t option_idx,
  62                                       llvm::StringRef option_arg,
  63                                       ExecutionContext *execution_context) {
  64   Status error;
  65   const int short_option = g_option_table[option_idx].short_option;
  66   switch (short_option) {
  67   case 'l': {
  68     language_type = Language::GetLanguageTypeFromString(option_arg);
  69     if (language_type == eLanguageTypeUnknown) {
  70       StreamString sstr;
  71       sstr.Printf("Unknown language type: '%s' for expression. List of "
  72                   "supported languages:\n",
  73                   option_arg.str().c_str());
  74       Language::PrintSupportedLanguagesForExpressions(sstr, " ", "\n");
  75       error = Status(sstr.GetString().str());
  76     }
  77     break;
  78   }
  79   case 'w': {
  80     WatchType tmp_watch_type;
  81     tmp_watch_type = (WatchType)OptionArgParser::ToOptionEnum(
  82         option_arg, g_option_table[option_idx].enum_values, 0, error);
  83     if (error.Success()) {
  84       watch_type = tmp_watch_type;
  85       watch_type_specified = true;
  86     }
  87     break;
  88   }
  89   case 's':
  90     error = watch_size.SetValueFromString(option_arg);
  91     if (watch_size.GetCurrentValue() == 0)
  92       error = Status::FromErrorStringWithFormat(
  93           "invalid --size option value '%s'", option_arg.str().c_str());
  94     break;
  95
  96   default:
  97     llvm_unreachable("Unimplemented option");
  98   }
  99
 100   return error;
 101 }
 102
 103 void OptionGroupWatchpoint::OptionParsingStarting(
 104     ExecutionContext *execution_context) {
 105   watch_type_specified = false;
 106   watch_type = eWatchInvalid;
 107   watch_size.Clear();
 108   language_type = eLanguageTypeUnknown;
 109 }
 110
 111 llvm::ArrayRef<OptionDefinition> OptionGroupWatchpoint::GetDefinitions() {
 112   return llvm::ArrayRef(g_option_table);
 113 }