llvm-project/lldb/source/Interpreter/CommandReturnObject.cpp

//===-- CommandReturnObject.cpp ---------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "lldb/Interpreter/CommandReturnObject.h"

// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/Error.h"
#include "lldb/Core/StreamString.h"

using namespace lldb;
using namespace lldb_private;

static void DumpStringToStreamWithNewline(Stream &strm, const std::string &s,
                                          bool add_newline_if_empty) {
  bool add_newline = false;
  if (s.empty()) {
    add_newline = add_newline_if_empty;
  } else {
    // We already checked for empty above, now make sure there is a newline
    // in the error, and if there isn't one, add one.
    strm.Write(s.c_str(), s.size());

    const char last_char = *s.rbegin();
    add_newline = last_char != '\n' && last_char != '\r';
  }
  if (add_newline)
    strm.EOL();
}

CommandReturnObject::CommandReturnObject()
    : m_out_stream(), m_err_stream(), m_status(eReturnStatusStarted),
      m_did_change_process_state(false), m_interactive(true),
      m_abnormal_stop_was_expected(false) {}

CommandReturnObject::~CommandReturnObject() {}

void CommandReturnObject::AppendErrorWithFormat(const char *format, ...) {
  if (!format)
    return;
  va_list args;
  va_start(args, format);
  StreamString sstrm;
  sstrm.PrintfVarArg(format, args);
  va_end(args);

  const std::string &s = sstrm.GetString();
  if (!s.empty()) {
    Stream &error_strm = GetErrorStream();
    error_strm.PutCString("error: ");
    DumpStringToStreamWithNewline(error_strm, s, false);
  }
}

void CommandReturnObject::AppendMessageWithFormat(const char *format, ...) {
  if (!format)
    return;
  va_list args;
  va_start(args, format);
  StreamString sstrm;
  sstrm.PrintfVarArg(format, args);
  va_end(args);

  GetOutputStream().Printf("%s", sstrm.GetData());
}

void CommandReturnObject::AppendWarningWithFormat(const char *format, ...) {
  if (!format)
    return;
  va_list args;
  va_start(args, format);
  StreamString sstrm;
  sstrm.PrintfVarArg(format, args);
  va_end(args);

  GetErrorStream().Printf("warning: %s", sstrm.GetData());
}

void CommandReturnObject::AppendMessage(const char *in_string) {
  if (!in_string)
    return;
  GetOutputStream().Printf("%s\n", in_string);
}

void CommandReturnObject::AppendWarning(const char *in_string) {
  if (!in_string || *in_string == '\0')
    return;
  GetErrorStream().Printf("warning: %s\n", in_string);
}

// Similar to AppendWarning, but do not prepend 'warning: ' to message, and
// don't append "\n" to the end of it.

void CommandReturnObject::AppendRawWarning(const char *in_string) {
  if (in_string && in_string[0])
    GetErrorStream().PutCString(in_string);
}

void CommandReturnObject::AppendError(const char *in_string) {
  if (!in_string || *in_string == '\0')
    return;
  GetErrorStream().Printf("error: %s\n", in_string);
}

void CommandReturnObject::SetError(const Error &error,
                                   const char *fallback_error_cstr) {
  const char *error_cstr = error.AsCString();
  if (error_cstr == nullptr)
    error_cstr = fallback_error_cstr;
  SetError(error_cstr);
}

void CommandReturnObject::SetError(const char *error_cstr) {
  if (error_cstr) {
    AppendError(error_cstr);
    SetStatus(eReturnStatusFailed);
  }
}

// Similar to AppendError, but do not prepend 'Error: ' to message, and
// don't append "\n" to the end of it.

void CommandReturnObject::AppendRawError(const char *in_string) {
  if (in_string && in_string[0])
    GetErrorStream().PutCString(in_string);
}

void CommandReturnObject::SetStatus(ReturnStatus status) { m_status = status; }

ReturnStatus CommandReturnObject::GetStatus() { return m_status; }

bool CommandReturnObject::Succeeded() {
  return m_status <= eReturnStatusSuccessContinuingResult;
}

bool CommandReturnObject::HasResult() {
  return (m_status == eReturnStatusSuccessFinishResult ||
          m_status == eReturnStatusSuccessContinuingResult);
}

void CommandReturnObject::Clear() {
  lldb::StreamSP stream_sp;
  stream_sp = m_out_stream.GetStreamAtIndex(eStreamStringIndex);
  if (stream_sp)
    static_cast<StreamString *>(stream_sp.get())->Clear();
  stream_sp = m_err_stream.GetStreamAtIndex(eStreamStringIndex);
  if (stream_sp)
    static_cast<StreamString *>(stream_sp.get())->Clear();
  m_status = eReturnStatusStarted;
  m_did_change_process_state = false;
  m_interactive = true;
}

bool CommandReturnObject::GetDidChangeProcessState() {
  return m_did_change_process_state;
}

void CommandReturnObject::SetDidChangeProcessState(bool b) {
  m_did_change_process_state = b;
}

bool CommandReturnObject::GetInteractive() const { return m_interactive; }

void CommandReturnObject::SetInteractive(bool b) { m_interactive = b; }