llvm-project/lldb/source/Breakpoint/BreakpointOptions.cpp

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

// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Breakpoint/BreakpointOptions.h"

#include "lldb/Breakpoint/StoppointCallbackContext.h"
#include "lldb/Core/Stream.h"
#include "lldb/Core/StringList.h"
#include "lldb/Core/Value.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/ThreadSpec.h"

using namespace lldb;
using namespace lldb_private;

bool BreakpointOptions::NullCallback(void *baton,
                                     StoppointCallbackContext *context,
                                     lldb::user_id_t break_id,
                                     lldb::user_id_t break_loc_id) {
  return true;
}

//----------------------------------------------------------------------
// BreakpointOptions constructor
//----------------------------------------------------------------------
BreakpointOptions::BreakpointOptions()
    : m_callback(BreakpointOptions::NullCallback), m_callback_baton_sp(),
      m_callback_is_synchronous(false), m_enabled(true), m_one_shot(false),
      m_ignore_count(0), m_thread_spec_ap(), m_condition_text(),
      m_condition_text_hash(0) {}

//----------------------------------------------------------------------
// BreakpointOptions copy constructor
//----------------------------------------------------------------------
BreakpointOptions::BreakpointOptions(const BreakpointOptions &rhs)
    : m_callback(rhs.m_callback), m_callback_baton_sp(rhs.m_callback_baton_sp),
      m_callback_is_synchronous(rhs.m_callback_is_synchronous),
      m_enabled(rhs.m_enabled), m_one_shot(rhs.m_one_shot),
      m_ignore_count(rhs.m_ignore_count), m_thread_spec_ap() {
  if (rhs.m_thread_spec_ap.get() != nullptr)
    m_thread_spec_ap.reset(new ThreadSpec(*rhs.m_thread_spec_ap.get()));
  m_condition_text = rhs.m_condition_text;
  m_condition_text_hash = rhs.m_condition_text_hash;
}

//----------------------------------------------------------------------
// BreakpointOptions assignment operator
//----------------------------------------------------------------------
const BreakpointOptions &BreakpointOptions::
operator=(const BreakpointOptions &rhs) {
  m_callback = rhs.m_callback;
  m_callback_baton_sp = rhs.m_callback_baton_sp;
  m_callback_is_synchronous = rhs.m_callback_is_synchronous;
  m_enabled = rhs.m_enabled;
  m_one_shot = rhs.m_one_shot;
  m_ignore_count = rhs.m_ignore_count;
  if (rhs.m_thread_spec_ap.get() != nullptr)
    m_thread_spec_ap.reset(new ThreadSpec(*rhs.m_thread_spec_ap.get()));
  m_condition_text = rhs.m_condition_text;
  m_condition_text_hash = rhs.m_condition_text_hash;
  return *this;
}

BreakpointOptions *
BreakpointOptions::CopyOptionsNoCallback(BreakpointOptions &orig) {
  BreakpointHitCallback orig_callback = orig.m_callback;
  lldb::BatonSP orig_callback_baton_sp = orig.m_callback_baton_sp;
  bool orig_is_sync = orig.m_callback_is_synchronous;

  orig.ClearCallback();
  BreakpointOptions *ret_val = new BreakpointOptions(orig);

  orig.SetCallback(orig_callback, orig_callback_baton_sp, orig_is_sync);

  return ret_val;
}

//----------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------
BreakpointOptions::~BreakpointOptions() = default;

//------------------------------------------------------------------
// Callbacks
//------------------------------------------------------------------
void BreakpointOptions::SetCallback(BreakpointHitCallback callback,
                                    const BatonSP &callback_baton_sp,
                                    bool callback_is_synchronous) {
  m_callback_is_synchronous = callback_is_synchronous;
  m_callback = callback;
  m_callback_baton_sp = callback_baton_sp;
}

void BreakpointOptions::ClearCallback() {
  m_callback = BreakpointOptions::NullCallback;
  m_callback_is_synchronous = false;
  m_callback_baton_sp.reset();
}

Baton *BreakpointOptions::GetBaton() { return m_callback_baton_sp.get(); }

const Baton *BreakpointOptions::GetBaton() const {
  return m_callback_baton_sp.get();
}

bool BreakpointOptions::InvokeCallback(StoppointCallbackContext *context,
                                       lldb::user_id_t break_id,
                                       lldb::user_id_t break_loc_id) {
  if (m_callback && context->is_synchronous == IsCallbackSynchronous()) {
    return m_callback(m_callback_baton_sp ? m_callback_baton_sp->m_data
                                          : nullptr,
                      context, break_id, break_loc_id);
  } else
    return true;
}

bool BreakpointOptions::HasCallback() const {
  return m_callback != BreakpointOptions::NullCallback;
}

void BreakpointOptions::SetCondition(const char *condition) {
  if (!condition)
    condition = "";

  m_condition_text.assign(condition);
  std::hash<std::string> hasher;
  m_condition_text_hash = hasher(m_condition_text);
}

const char *BreakpointOptions::GetConditionText(size_t *hash) const {
  if (!m_condition_text.empty()) {
    if (hash)
      *hash = m_condition_text_hash;

    return m_condition_text.c_str();
  } else {
    return nullptr;
  }
}

const ThreadSpec *BreakpointOptions::GetThreadSpecNoCreate() const {
  return m_thread_spec_ap.get();
}

ThreadSpec *BreakpointOptions::GetThreadSpec() {
  if (m_thread_spec_ap.get() == nullptr)
    m_thread_spec_ap.reset(new ThreadSpec());

  return m_thread_spec_ap.get();
}

void BreakpointOptions::SetThreadID(lldb::tid_t thread_id) {
  GetThreadSpec()->SetTID(thread_id);
}

void BreakpointOptions::GetDescription(Stream *s,
                                       lldb::DescriptionLevel level) const {
  // Figure out if there are any options not at their default value, and only
  // print
  // anything if there are:

  if (m_ignore_count != 0 || !m_enabled || m_one_shot ||
      (GetThreadSpecNoCreate() != nullptr &&
       GetThreadSpecNoCreate()->HasSpecification())) {
    if (level == lldb::eDescriptionLevelVerbose) {
      s->EOL();
      s->IndentMore();
      s->Indent();
      s->PutCString("Breakpoint Options:\n");
      s->IndentMore();
      s->Indent();
    } else
      s->PutCString(" Options: ");

    if (m_ignore_count > 0)
      s->Printf("ignore: %d ", m_ignore_count);
    s->Printf("%sabled ", m_enabled ? "en" : "dis");

    if (m_one_shot)
      s->Printf("one-shot ");

    if (m_thread_spec_ap.get())
      m_thread_spec_ap->GetDescription(s, level);

    if (level == lldb::eDescriptionLevelFull) {
      s->IndentLess();
      s->IndentMore();
    }
  }

  if (m_callback_baton_sp.get()) {
    if (level != eDescriptionLevelBrief) {
      s->EOL();
      m_callback_baton_sp->GetDescription(s, level);
    }
  }
  if (!m_condition_text.empty()) {
    if (level != eDescriptionLevelBrief) {
      s->EOL();
      s->Printf("Condition: %s\n", m_condition_text.c_str());
    }
  }
}

void BreakpointOptions::CommandBaton::GetDescription(
    Stream *s, lldb::DescriptionLevel level) const {
  CommandData *data = (CommandData *)m_data;

  if (level == eDescriptionLevelBrief) {
    s->Printf(", commands = %s",
              (data && data->user_source.GetSize() > 0) ? "yes" : "no");
    return;
  }

  s->IndentMore();
  s->Indent("Breakpoint commands:\n");

  s->IndentMore();
  if (data && data->user_source.GetSize() > 0) {
    const size_t num_strings = data->user_source.GetSize();
    for (size_t i = 0; i < num_strings; ++i) {
      s->Indent(data->user_source.GetStringAtIndex(i));
      s->EOL();
    }
  } else {
    s->PutCString("No commands.\n");
  }
  s->IndentLess();
  s->IndentLess();
}