lldb/source/Interpreter/OptionValueString.cpp

   1 //===-- OptionValueString.cpp ---------------------------------------------===//
   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 #include "lldb/Interpreter/OptionValueString.h"
  10
  11 #include "lldb/Host/OptionParser.h"
  12 #include "lldb/Utility/Args.h"
  13 #include "lldb/Utility/Stream.h"
  14
  15 using namespace lldb;
  16 using namespace lldb_private;
  17
  18 void OptionValueString::DumpValue(const ExecutionContext *exe_ctx, Stream &strm,
  19                                   uint32_t dump_mask) {
  20   if (dump_mask & eDumpOptionType)
  21     strm.Printf("(%s)", GetTypeAsCString());
  22   if (dump_mask & eDumpOptionValue) {
  23     if (dump_mask & eDumpOptionType)
  24       strm.PutCString(" = ");
  25     if (!m_current_value.empty() || m_value_was_set) {
  26       if (m_options.Test(eOptionEncodeCharacterEscapeSequences)) {
  27         std::string expanded_escape_value;
  28         Args::ExpandEscapedCharacters(m_current_value.c_str(),
  29                                       expanded_escape_value);
  30         if (dump_mask & eDumpOptionRaw)
  31           strm.Printf("%s", expanded_escape_value.c_str());
  32         else
  33           strm.Printf("\"%s\"", expanded_escape_value.c_str());
  34       } else {
  35         if (dump_mask & eDumpOptionRaw)
  36           strm.Printf("%s", m_current_value.c_str());
  37         else
  38           strm.Printf("\"%s\"", m_current_value.c_str());
  39       }
  40     }
  41   }
  42 }
  43
  44 Status OptionValueString::SetValueFromString(llvm::StringRef value,
  45                                              VarSetOperationType op) {
  46   Status error;
  47
  48   std::string value_str = value.str();
  49   value = value.trim();
  50   if (value.size() > 0) {
  51     switch (value.front()) {
  52     case '"':
  53     case '\'': {
  54       if (value.size() <= 1 || value.back() != value.front()) {
  55         error = Status::FromErrorString("mismatched quotes");
  56         return error;
  57       }
  58       value = value.drop_front().drop_back();
  59     } break;
  60     }
  61     value_str = value.str();
  62   }
  63
  64   switch (op) {
  65   case eVarSetOperationInvalid:
  66   case eVarSetOperationInsertBefore:
  67   case eVarSetOperationInsertAfter:
  68   case eVarSetOperationRemove:
  69     if (m_validator) {
  70       error = m_validator(value_str.c_str(), m_validator_baton);
  71       if (error.Fail())
  72         return error;
  73     }
  74     error = OptionValue::SetValueFromString(value, op);
  75     break;
  76
  77   case eVarSetOperationAppend: {
  78     std::string new_value(m_current_value);
  79     if (value.size() > 0) {
  80       if (m_options.Test(eOptionEncodeCharacterEscapeSequences)) {
  81         std::string str;
  82         Args::EncodeEscapeSequences(value_str.c_str(), str);
  83         new_value.append(str);
  84       } else
  85         new_value.append(std::string(value));
  86     }
  87     if (m_validator) {
  88       error = m_validator(new_value.c_str(), m_validator_baton);
  89       if (error.Fail())
  90         return error;
  91     }
  92     m_current_value.assign(new_value);
  93     NotifyValueChanged();
  94   } break;
  95
  96   case eVarSetOperationClear:
  97     Clear();
  98     NotifyValueChanged();
  99     break;
 100
 101   case eVarSetOperationReplace:
 102   case eVarSetOperationAssign:
 103     if (m_validator) {
 104       error = m_validator(value_str.c_str(), m_validator_baton);
 105       if (error.Fail())
 106         return error;
 107     }
 108     m_value_was_set = true;
 109     if (m_options.Test(eOptionEncodeCharacterEscapeSequences)) {
 110       Args::EncodeEscapeSequences(value_str.c_str(), m_current_value);
 111     } else {
 112       SetCurrentValue(value_str);
 113     }
 114     NotifyValueChanged();
 115     break;
 116   }
 117   return error;
 118 }
 119
 120 Status OptionValueString::SetCurrentValue(llvm::StringRef value) {
 121   if (m_validator) {
 122     Status error(m_validator(value.str().c_str(), m_validator_baton));
 123     if (error.Fail())
 124       return error;
 125   }
 126   m_current_value.assign(std::string(value));
 127   return Status();
 128 }
 129
 130 Status OptionValueString::AppendToCurrentValue(const char *value) {
 131   if (value && value[0]) {
 132     if (m_validator) {
 133       std::string new_value(m_current_value);
 134       new_value.append(value);
 135       Status error(m_validator(value, m_validator_baton));
 136       if (error.Fail())
 137         return error;
 138       m_current_value.assign(new_value);
 139     } else
 140       m_current_value.append(value);
 141   }
 142   return Status();
 143 }