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

#ifndef lldb_MemoryRegionInfo_h
#define lldb_MemoryRegionInfo_h

#include "lldb/Core/RangeMap.h"
#include "lldb/Utility/Range.h"

namespace lldb_private
{
    class MemoryRegionInfo
    {
    public:
        typedef Range<lldb::addr_t, lldb::addr_t> RangeType;
        
        enum OptionalBool {
            eDontKnow  = -1,
            eNo         = 0,
            eYes        = 1
        };
        
        MemoryRegionInfo () :
        m_range (),
        m_read (eDontKnow),
        m_write (eDontKnow),
        m_execute (eDontKnow),
        m_mapped (eDontKnow)
        {
        }
        
        ~MemoryRegionInfo ()
        {
        }
        
        RangeType &
        GetRange()
        {
            return m_range;
        }
        
        void
        Clear()
        {
            m_range.Clear();
            m_read = m_write = m_execute = eDontKnow;
        }
        
        const RangeType &
        GetRange() const
        {
            return m_range;
        }
        
        OptionalBool
        GetReadable () const
        {
            return m_read;
        }
        
        OptionalBool
        GetWritable () const
        {
            return m_write;
        }
        
        OptionalBool
        GetExecutable () const
        {
            return m_execute;
        }
        
        OptionalBool
        GetMapped () const
        {
            return m_mapped;
        }
        
        void
        SetReadable (OptionalBool val)
        {
            m_read = val;
        }
        
        void
        SetWritable (OptionalBool val)
        {
            m_write = val;
        }
        
        void
        SetExecutable (OptionalBool val)
        {
            m_execute = val;
        }
        
        void
        SetMapped (OptionalBool val)
        {
            m_mapped = val;
        }

        //----------------------------------------------------------------------
        // Get permissions as a uint32_t that is a mask of one or more bits from
        // the lldb::Permissions
        //----------------------------------------------------------------------
        uint32_t
        GetLLDBPermissions() const
        {
            uint32_t permissions = 0;
            if (m_read)
                permissions |= lldb::ePermissionsReadable;
            if (m_write)
                permissions |= lldb::ePermissionsWritable;
            if (m_execute)
                permissions |= lldb::ePermissionsExecutable;
            return permissions;
        }

        //----------------------------------------------------------------------
        // Set permissions from a uint32_t that contains one or more bits from
        // the lldb::Permissions
        //----------------------------------------------------------------------
        void
        SetLLDBPermissions(uint32_t permissions)
        {
            m_read = (permissions & lldb::ePermissionsReadable) ? eYes : eNo;
            m_write = (permissions & lldb::ePermissionsWritable) ? eYes : eNo;
            m_execute = (permissions & lldb::ePermissionsExecutable) ? eYes : eNo;
        }

        bool
        operator == (const MemoryRegionInfo &rhs) const
        {
            return m_range == rhs.m_range &&
                   m_read == rhs.m_read &&
                   m_write == rhs.m_write &&
                   m_execute == rhs.m_execute &&
                   m_mapped == rhs.m_mapped;
        }
        
        bool
        operator != (const MemoryRegionInfo &rhs) const
        {
            return !(*this == rhs);
        }
        
    protected:
        RangeType m_range;
        OptionalBool m_read;
        OptionalBool m_write;
        OptionalBool m_execute;
        OptionalBool m_mapped;
    };
}

#endif // #ifndef lldb_MemoryRegionInfo_h
