1 //===-- OptionValueRegex.h --------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLDB_INTERPRETER_OPTIONVALUEREGEX_H
10 #define LLDB_INTERPRETER_OPTIONVALUEREGEX_H
11 
12 #include "lldb/Interpreter/OptionValue.h"
13 #include "lldb/Utility/RegularExpression.h"
14 
15 namespace lldb_private {
16 
17 class OptionValueRegex : public OptionValue {
18 public:
19   OptionValueRegex(const char *value = nullptr)
20       : OptionValue(), m_regex(llvm::StringRef::withNullAsEmpty(value)),
21         m_default_regex_str(llvm::StringRef::withNullAsEmpty(value).str()) {}
22 
23   ~OptionValueRegex() override = default;
24 
25   // Virtual subclass pure virtual overrides
26 
27   OptionValue::Type GetType() const override { return eTypeRegex; }
28 
29   void DumpValue(const ExecutionContext *exe_ctx, Stream &strm,
30                  uint32_t dump_mask) override;
31 
32   Status
33   SetValueFromString(llvm::StringRef value,
34                      VarSetOperationType op = eVarSetOperationAssign) override;
35   Status
36   SetValueFromString(const char *,
37                      VarSetOperationType = eVarSetOperationAssign) = delete;
38 
39   bool Clear() override {
40     m_regex = RegularExpression(m_default_regex_str);
41     m_value_was_set = false;
42     return true;
43   }
44 
45   lldb::OptionValueSP DeepCopy() const override;
46 
47   // Subclass specific functions
48   const RegularExpression *GetCurrentValue() const {
49     return (m_regex.IsValid() ? &m_regex : nullptr);
50   }
51 
52   void SetCurrentValue(const char *value) {
53     if (value && value[0])
54       m_regex = RegularExpression(llvm::StringRef(value));
55     else
56       m_regex = RegularExpression();
57   }
58 
59   bool IsValid() const { return m_regex.IsValid(); }
60 
61 protected:
62   RegularExpression m_regex;
63   std::string m_default_regex_str;
64 };
65 
66 } // namespace lldb_private
67 
68 #endif // LLDB_INTERPRETER_OPTIONVALUEREGEX_H
69