1 //===-- OptionValueFormatEntity.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/OptionValueFormatEntity.h"
11 
12 // C Includes
13 // C++ Includes
14 // Other libraries and framework includes
15 // Project includes
16 #include "lldb/Core/Module.h"
17 #include "lldb/Core/Stream.h"
18 #include "lldb/Core/StringList.h"
19 #include "lldb/Interpreter/CommandInterpreter.h"
20 using namespace lldb;
21 using namespace lldb_private;
22 
23 OptionValueFormatEntity::OptionValueFormatEntity(const char *default_format)
24     : OptionValue(), m_current_format(), m_default_format(), m_current_entry(),
25       m_default_entry() {
26   if (default_format && default_format[0]) {
27     llvm::StringRef default_format_str(default_format);
28     Error error = FormatEntity::Parse(default_format_str, m_default_entry);
29     if (error.Success()) {
30       m_default_format = default_format;
31       m_current_format = default_format;
32       m_current_entry = m_default_entry;
33     }
34   }
35 }
36 
37 bool OptionValueFormatEntity::Clear() {
38   m_current_entry = m_default_entry;
39   m_current_format = m_default_format;
40   m_value_was_set = false;
41   return true;
42 }
43 
44 void OptionValueFormatEntity::DumpValue(const ExecutionContext *exe_ctx,
45                                         Stream &strm, uint32_t dump_mask) {
46   if (dump_mask & eDumpOptionType)
47     strm.Printf("(%s)", GetTypeAsCString());
48   if (dump_mask & eDumpOptionValue) {
49     if (dump_mask & eDumpOptionType)
50       strm.PutCString(" = \"");
51     strm << m_current_format.c_str() << '"';
52   }
53 }
54 
55 Error OptionValueFormatEntity::SetValueFromString(llvm::StringRef value_str,
56                                                   VarSetOperationType op) {
57   Error error;
58   switch (op) {
59   case eVarSetOperationClear:
60     Clear();
61     NotifyValueChanged();
62     break;
63 
64   case eVarSetOperationReplace:
65   case eVarSetOperationAssign: {
66     // Check if the string starts with a quote character after removing leading
67     // and trailing spaces.
68     // If it does start with a quote character, make sure it ends with the same
69     // quote character
70     // and remove the quotes before we parse the format string. If the string
71     // doesn't start with
72     // a quote, leave the string alone and parse as is.
73     llvm::StringRef trimmed_value_str = value_str.trim();
74     if (!trimmed_value_str.empty()) {
75       const char first_char = trimmed_value_str[0];
76       if (first_char == '"' || first_char == '\'') {
77         const size_t trimmed_len = trimmed_value_str.size();
78         if (trimmed_len == 1 || value_str[trimmed_len - 1] != first_char) {
79           error.SetErrorStringWithFormat("mismatched quotes");
80           return error;
81         }
82         value_str = trimmed_value_str.substr(1, trimmed_len - 2);
83       }
84     }
85     FormatEntity::Entry entry;
86     error = FormatEntity::Parse(value_str, entry);
87     if (error.Success()) {
88       m_current_entry = std::move(entry);
89       m_current_format = value_str;
90       m_value_was_set = true;
91       NotifyValueChanged();
92     }
93   } break;
94 
95   case eVarSetOperationInsertBefore:
96   case eVarSetOperationInsertAfter:
97   case eVarSetOperationRemove:
98   case eVarSetOperationAppend:
99   case eVarSetOperationInvalid:
100     error = OptionValue::SetValueFromString(value_str, op);
101     break;
102   }
103   return error;
104 }
105 
106 lldb::OptionValueSP OptionValueFormatEntity::DeepCopy() const {
107   return OptionValueSP(new OptionValueFormatEntity(*this));
108 }
109 
110 size_t OptionValueFormatEntity::AutoComplete(
111     CommandInterpreter &interpreter, const char *s, int match_start_point,
112     int max_return_elements, bool &word_complete, StringList &matches) {
113   return FormatEntity::AutoComplete(s, match_start_point, max_return_elements,
114                                     word_complete, matches);
115 }
116