xref: /freebsd-11-stable/contrib/llvm-project/lldb/include/lldb/Target/ThreadPlanStepInRange.h

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

#ifndef liblldb_ThreadPlanStepInRange_h_
#define liblldb_ThreadPlanStepInRange_h_

// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/AddressRange.h"
#include "lldb/Target/StackID.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/ThreadPlanStepRange.h"
#include "lldb/Target/ThreadPlanShouldStopHere.h"

namespace lldb_private {

class ThreadPlanStepInRange :
    public ThreadPlanStepRange,
    public ThreadPlanShouldStopHere
{
public:
    ThreadPlanStepInRange (Thread &thread,
                           const AddressRange &range,
                           const SymbolContext &addr_context,
                           lldb::RunMode stop_others,
                            LazyBool step_in_avoids_code_without_debug_info,
                            LazyBool step_out_avoids_code_without_debug_info);

    ThreadPlanStepInRange (Thread &thread,
                           const AddressRange &range,
                           const SymbolContext &addr_context,
                           const char *step_into_function_name,
                           lldb::RunMode stop_others,
                            LazyBool step_in_avoids_code_without_debug_info,
                            LazyBool step_out_avoids_code_without_debug_info);

    virtual
    ~ThreadPlanStepInRange ();

    virtual void
    GetDescription (Stream *s, lldb::DescriptionLevel level);

    virtual bool
    ShouldStop (Event *event_ptr);

    void SetAvoidRegexp(const char *name);

    void SetStepInTarget (const char *target)
    {
        m_step_into_target.SetCString(target);
    }

    static void
    SetDefaultFlagValue (uint32_t new_value);

    bool
    IsVirtualStep();

protected:
    static bool
    DefaultShouldStopHereCallback (ThreadPlan *current_plan, Flags &flags, lldb::FrameComparison operation, void *baton);

    virtual bool DoWillResume (lldb::StateType resume_state, bool current_plan);

    virtual bool
    DoPlanExplainsStop (Event *event_ptr);

    virtual void
    SetFlagsToDefault ()
    {
        GetFlags().Set(ThreadPlanStepInRange::s_default_flag_values);
    }

    void
    SetCallbacks()
    {
        ThreadPlanShouldStopHere::ThreadPlanShouldStopHereCallbacks callbacks(ThreadPlanStepInRange::DefaultShouldStopHereCallback, nullptr);
        SetShouldStopHereCallbacks (&callbacks, nullptr);
    }

    bool
    FrameMatchesAvoidCriteria ();

private:

    friend lldb::ThreadPlanSP
    Thread::QueueThreadPlanForStepOverRange (bool abort_other_plans,
                                         const AddressRange &range,
                                         const SymbolContext &addr_context,
                                         lldb::RunMode stop_others,
                                         LazyBool avoid_code_without_debug_info);
    friend lldb::ThreadPlanSP
    Thread::QueueThreadPlanForStepInRange (bool abort_other_plans,
                                         const AddressRange &range,
                                         const SymbolContext &addr_context,
                                         const char *step_in_target,
                                         lldb::RunMode stop_others,
                                         LazyBool step_in_avoids_code_without_debug_info,
                                         LazyBool step_out_avoids_code_without_debug_info);

    void SetupAvoidNoDebug(LazyBool step_in_avoids_code_without_debug_info,
                           LazyBool step_out_avoids_code_without_debug_info);
    // Need an appropriate marker for the current stack so we can tell step out
    // from step in.

    static uint32_t s_default_flag_values;  // These are the default flag values for the ThreadPlanStepThrough.
    lldb::ThreadPlanSP m_sub_plan_sp;  // Keep track of the last plan we were running.  If it fails, we should stop.
    std::unique_ptr<RegularExpression> m_avoid_regexp_ap;
    bool m_step_past_prologue;  // FIXME: For now hard-coded to true, we could put a switch in for this if there's
                                // demand for that.
    bool m_virtual_step;        // true if we've just done a "virtual step", i.e. just moved the inline stack depth.
    ConstString m_step_into_target;
    DISALLOW_COPY_AND_ASSIGN (ThreadPlanStepInRange);

};

} // namespace lldb_private

#endif  // liblldb_ThreadPlanStepInRange_h_