OptionGroupWatchpoint.cpp revision 1e0e73a403ffbbeafa7a98e958909b56be929cf0 
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
20using namespace lldb;
21using namespace lldb_private;
22
23static 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
31static 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
40static OptionDefinition
41g_option_table[] =
42{
43    { LLDB_OPT_SET_1, false, "watch", 'w', required_argument, g_watch_type, 0, eArgTypeWatchType, "Specify the type of watching to perform."},
44    { LLDB_OPT_SET_1, false, "xsize", 'x', required_argument, g_watch_size, 0, eArgTypeByteSize, "Number of bytes to use to watch a region."}
45};
46
47
48bool
49OptionGroupWatchpoint::IsWatchSizeSupported(uint32_t watch_size)
50{
51    for (uint32_t i = 0; i < llvm::array_lengthof(g_watch_size); ++i)
52    {
53        if (g_watch_size[i].value == 0)
54            break;
55        if (watch_size == g_watch_size[i].value)
56            return true;
57    }
58    return false;
59}
60
61OptionGroupWatchpoint::OptionGroupWatchpoint () :
62    OptionGroup()
63{
64}
65
66OptionGroupWatchpoint::~OptionGroupWatchpoint ()
67{
68}
69
70Error
71OptionGroupWatchpoint::SetOptionValue (CommandInterpreter &interpreter,
72                                       uint32_t option_idx,
73                                       const char *option_arg)
74{
75    Error error;
76    char short_option = (char) g_option_table[option_idx].short_option;
77    switch (short_option)
78    {
79        case 'w':
80            watch_type = (WatchType) Args::StringToOptionEnum(option_arg, g_option_table[option_idx].enum_values, 0, error);
81            if (error.Success())
82                watch_type_specified = true;
83            break;
84
85        case 'x':
86            watch_size = (WatchType) Args::StringToOptionEnum(option_arg, g_option_table[option_idx].enum_values, 0, error);
87            break;
88
89        default:
90            error.SetErrorStringWithFormat("unrecognized short option '%c'", short_option);
91            break;
92    }
93
94    return error;
95}
96
97void
98OptionGroupWatchpoint::OptionParsingStarting (CommandInterpreter &interpreter)
99{
100    watch_type_specified = false;
101    watch_type = eWatchInvalid;
102    watch_size = 0;
103}
104
105
106const OptionDefinition*
107OptionGroupWatchpoint::GetDefinitions ()
108{
109    return g_option_table;
110}
111
112uint32_t
113OptionGroupWatchpoint::GetNumDefinitions ()
114{
115    return llvm::array_lengthof(g_option_table);
116}
117