1 //===-- BreakpointID.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 
11 // C Includes
12 // C++ Includes
13 // Other libraries and framework includes
14 // Project includes
15 
16 #include "lldb/Breakpoint/BreakpointID.h"
17 #include "lldb/Breakpoint/Breakpoint.h"
18 
19 using namespace lldb;
20 using namespace lldb_private;
21 
22 BreakpointID::BreakpointID (break_id_t bp_id, break_id_t loc_id) :
23     m_break_id (bp_id),
24     m_location_id (loc_id)
25 {
26 }
27 
28 BreakpointID::~BreakpointID ()
29 {
30 }
31 
32 const char *BreakpointID::g_range_specifiers[] = { "-", "to", "To", "TO", NULL };
33 
34 // Tells whether or not STR is valid to use between two strings representing breakpoint IDs, to
35 // indicate a range of breakpoint IDs.  This is broken out into a separate function so that we can
36 // easily change or add to the format for specifying ID ranges at a later date.
37 
38 bool
39 BreakpointID::IsRangeIdentifier (const char *str)
40 {
41     int specifier_count = 0;
42     for (int i = 0; g_range_specifiers[i] != NULL; ++i)
43       ++specifier_count;
44 
45     for (int i = 0; i < specifier_count; ++i)
46     {
47       if (strcmp (g_range_specifiers[i], str) == 0)
48             return true;
49     }
50 
51   return false;
52 }
53 
54 bool
55 BreakpointID::IsValidIDExpression (const char *str)
56 {
57     break_id_t bp_id;
58     break_id_t loc_id;
59     BreakpointID::ParseCanonicalReference (str, &bp_id, &loc_id);
60 
61     if (bp_id == LLDB_INVALID_BREAK_ID)
62         return false;
63     else
64         return true;
65 }
66 
67 void
68 BreakpointID::GetDescription (Stream *s, lldb::DescriptionLevel level)
69 {
70     if (level == eDescriptionLevelVerbose)
71         s->Printf("%p BreakpointID:", this);
72 
73     if (m_break_id == LLDB_INVALID_BREAK_ID)
74         s->PutCString ("<invalid>");
75     else if (m_location_id == LLDB_INVALID_BREAK_ID)
76         s->Printf("%i", m_break_id);
77     else
78         s->Printf("%i.%i", m_break_id, m_location_id);
79 }
80 
81 void
82 BreakpointID::GetCanonicalReference (Stream *s, break_id_t bp_id, break_id_t loc_id)
83 {
84     if (bp_id == LLDB_INVALID_BREAK_ID)
85         s->PutCString ("<invalid>");
86     else if (loc_id == LLDB_INVALID_BREAK_ID)
87         s->Printf("%i", bp_id);
88     else
89         s->Printf("%i.%i", bp_id, loc_id);
90 }
91 
92 bool
93 BreakpointID::ParseCanonicalReference (const char *input, break_id_t *break_id_ptr, break_id_t *break_loc_id_ptr)
94 {
95     *break_id_ptr = LLDB_INVALID_BREAK_ID;
96     *break_loc_id_ptr = LLDB_INVALID_BREAK_ID;
97 
98     if (input == NULL || *input == '\0')
99         return false;
100 
101     const char *format = "%i%n.%i%n";
102     int chars_consumed_1 = 0;
103     int chars_consumed_2 = 0;
104     int n_items_parsed = ::sscanf (input,
105                                    format,
106                                    break_id_ptr,        // %i   parse the breakpoint ID
107                                    &chars_consumed_1,   // %n   gets the number of characters parsed so far
108                                    break_loc_id_ptr,    // %i   parse the breakpoint location ID
109                                    &chars_consumed_2);  // %n   gets the number of characters parsed so far
110 
111     if ((n_items_parsed == 1 && input[chars_consumed_1] == '\0') ||
112         (n_items_parsed == 2 && input[chars_consumed_2] == '\0'))
113         return true;
114 
115     // Badly formatted canonical reference.
116     *break_id_ptr = LLDB_INVALID_BREAK_ID;
117     *break_loc_id_ptr = LLDB_INVALID_BREAK_ID;
118     return false;
119 }
120 
121