lldb/source/Expression/DiagnosticManager.cpp

   1 //===-- DiagnosticManager.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/Expression/DiagnosticManager.h"
  10
  11 #include "llvm/Support/ErrorHandling.h"
  12
  13 #include "lldb/Utility/Log.h"
  14 #include "lldb/Utility/StreamString.h"
  15
  16 using namespace lldb_private;
  17
  18 void DiagnosticManager::Dump(Log *log) {
  19   if (!log)
  20     return;
  21
  22   std::string str = GetString();
  23
  24   // GetString() puts a separator after each diagnostic. We want to remove the
  25   // last '\n' because log->PutCString will add one for us.
  26
  27   if (str.size() && str.back() == '\n') {
  28     str.pop_back();
  29   }
  30
  31   log->PutCString(str.c_str());
  32 }
  33
  34 static const char *StringForSeverity(DiagnosticSeverity severity) {
  35   switch (severity) {
  36   // this should be exhaustive
  37   case lldb_private::eDiagnosticSeverityError:
  38     return "error: ";
  39   case lldb_private::eDiagnosticSeverityWarning:
  40     return "warning: ";
  41   case lldb_private::eDiagnosticSeverityRemark:
  42     return "";
  43   }
  44   llvm_unreachable("switch needs another case for DiagnosticSeverity enum");
  45 }
  46
  47 std::string DiagnosticManager::GetString(char separator) {
  48   std::string ret;
  49
  50   for (const auto &diagnostic : Diagnostics()) {
  51     ret.append(StringForSeverity(diagnostic->GetSeverity()));
  52     ret.append(std::string(diagnostic->GetMessage()));
  53     ret.push_back(separator);
  54   }
  55
  56   return ret;
  57 }
  58
  59 size_t DiagnosticManager::Printf(DiagnosticSeverity severity,
  60                                  const char *format, ...) {
  61   StreamString ss;
  62
  63   va_list args;
  64   va_start(args, format);
  65   size_t result = ss.PrintfVarArg(format, args);
  66   va_end(args);
  67
  68   AddDiagnostic(ss.GetString(), severity, eDiagnosticOriginLLDB);
  69
  70   return result;
  71 }
  72
  73 void DiagnosticManager::PutString(DiagnosticSeverity severity,
  74                                   llvm::StringRef str) {
  75   if (str.empty())
  76     return;
  77   AddDiagnostic(str, severity, eDiagnosticOriginLLDB);
  78 }