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/lldb-enumerations.h"
17 #include "lldb/Interpreter/Args.h"
18 #include "lldb/Utility/Utils.h"
19 
20 using namespace lldb;
21 using namespace lldb_private;
22 
23 static OptionEnumValueElement g_watch_type[] =
24 {
25     { OptionGroupWatchpoint::eWatchRead,      "read",       "Watch for read"},
26     { OptionGroupWatchpoint::eWatchWrite,     "write",      "Watch for write"},
27     { OptionGroupWatchpoint::eWatchReadWrite, "read_write", "Watch for read/write"},
28     { 0, NULL, NULL }
29 };
30 
31 static OptionEnumValueElement g_watch_size[] =
32 {
33     { 1, "1", "Watch for byte size of 1"},
34     { 2, "2", "Watch for byte size of 2"},
35     { 4, "4", "Watch for byte size of 4"},
36     { 8, "8", "Watch for byte size of 8"},
37     { 0, NULL, NULL }
38 };
39 
40 // if you add any options here, remember to update the counters in OptionGroupWatchpoint::GetNumDefinitions()
41 static OptionDefinition
42 g_option_table[] =
43 {
44     { LLDB_OPT_SET_1, false, "watch", 'w', required_argument, g_watch_type, 0, eArgTypeWatchType, "Determine how to watch a variable (read, write, or read/write)."},
45     { LLDB_OPT_SET_1, false, "xsize", 'x', required_argument, g_watch_size, 0, eArgTypeByteSize, "Number of bytes to use to watch a location (1, 2, 4, or 8)."}
46 };
47 
48 
49 OptionGroupWatchpoint::OptionGroupWatchpoint () :
50     OptionGroup()
51 {
52 }
53 
54 OptionGroupWatchpoint::~OptionGroupWatchpoint ()
55 {
56 }
57 
58 Error
59 OptionGroupWatchpoint::SetOptionValue (CommandInterpreter &interpreter,
60                                        uint32_t option_idx,
61                                        const char *option_arg)
62 {
63     Error error;
64     char short_option = (char) g_option_table[option_idx].short_option;
65     switch (short_option)
66     {
67         case 'w': {
68             OptionEnumValueElement *enum_values = g_option_table[option_idx].enum_values;
69             watch_type = (WatchType) Args::StringToOptionEnum(option_arg, enum_values, 0, &watch_variable);
70             if (!watch_variable)
71                 error.SetErrorStringWithFormat("Invalid option arg for '-w': '%s'.\n", option_arg);
72             break;
73         }
74         case 'x': {
75             bool success = false;
76             OptionEnumValueElement *enum_values = g_option_table[option_idx].enum_values;
77             watch_size = (WatchType) Args::StringToOptionEnum(option_arg, enum_values, 0, &success);
78             if (!success)
79                 error.SetErrorStringWithFormat("Invalid option arg for '-x': '%s'.\n", option_arg);
80             break;
81         }
82         default:
83             error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option);
84             break;
85     }
86 
87     return error;
88 }
89 
90 void
91 OptionGroupWatchpoint::OptionParsingStarting (CommandInterpreter &interpreter)
92 {
93     watch_variable = false;
94     watch_type     = eWatchInvalid;
95     watch_size     = 0;
96 }
97 
98 
99 const OptionDefinition*
100 OptionGroupWatchpoint::GetDefinitions ()
101 {
102     return g_option_table;
103 }
104 
105 uint32_t
106 OptionGroupWatchpoint::GetNumDefinitions ()
107 {
108     return arraysize(g_option_table);
109 }
110