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             watch_type = (WatchType) Args::StringToOptionEnum(option_arg, g_option_table[option_idx].enum_values, 0, error);
69             if (error.Success())
70                 watch_variable = true;
71             break;
72 
73         case 'x':
74             watch_size = (WatchType) Args::StringToOptionEnum(option_arg, g_option_table[option_idx].enum_values, 0, error);
75             break;
76 
77         default:
78             error.SetErrorStringWithFormat("Invalid short option character '%c'.\n", short_option);
79             break;
80     }
81 
82     return error;
83 }
84 
85 void
86 OptionGroupWatchpoint::OptionParsingStarting (CommandInterpreter &interpreter)
87 {
88     watch_variable = false;
89     watch_type = eWatchInvalid;
90     watch_size = 0;
91 }
92 
93 
94 const OptionDefinition*
95 OptionGroupWatchpoint::GetDefinitions ()
96 {
97     return g_option_table;
98 }
99 
100 uint32_t
101 OptionGroupWatchpoint::GetNumDefinitions ()
102 {
103     return arraysize(g_option_table);
104 }
105