//===-- FileSpecList.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_FileSpecList_h_
#define liblldb_FileSpecList_h_
#if defined(__cplusplus)

#include "lldb/lldb-private.h"
#include "lldb/Host/FileSpec.h"
#include <vector>

namespace lldb_private {

//----------------------------------------------------------------------
/// @class FileSpecList FileSpecList.h "lldb/Core/FileSpecList.h"
/// @brief A file collection class.
///
/// A class that contains a mutable list of FileSpec objects.
//----------------------------------------------------------------------
class FileSpecList
{
public:
    //------------------------------------------------------------------
    /// Default constructor.
    ///
    /// Initialize this object with an empty file list.
    //------------------------------------------------------------------
    FileSpecList ();

    //------------------------------------------------------------------
    /// Copy constructor.
    ///
    /// Initialize this object with a copy of the file list from \a rhs.
    ///
    /// @param[in] rhs
    ///     A const reference to another file list object.
    //------------------------------------------------------------------
    FileSpecList (const FileSpecList &rhs);

    //------------------------------------------------------------------
    /// Destructor.
    //------------------------------------------------------------------
    ~FileSpecList ();

    //------------------------------------------------------------------
    /// Assignment operator.
    ///
    /// Replace the file list in this object with the file list from
    /// \a rhs.
    ///
    /// @param[in] rhs
    ///     A file list object to copy.
    ///
    /// @return
    ///     A const reference to this object.
    //------------------------------------------------------------------
    const FileSpecList&
    operator= (const FileSpecList &rhs);

    //------------------------------------------------------------------
    /// Append a FileSpec object to the list.
    ///
    /// Appends \a file to the end of the file list.
    ///
    /// @param[in] file
    ///     A new file to append to this file list.
    //------------------------------------------------------------------
    void
    Append (const FileSpec &file);

    //------------------------------------------------------------------
    /// Append a FileSpec object if unique.
    ///
    /// Appends \a file to the end of the file list if it doesn't
    /// already exist in the file list.
    ///
    /// @param[in] file
    ///     A new file to append to this file list.
    ///
    /// @return
    ///     \b true if the file was appended, \b false otherwise.
    //------------------------------------------------------------------
    bool
    AppendIfUnique (const FileSpec &file);

    //------------------------------------------------------------------
    /// Clears the file list.
    //------------------------------------------------------------------
    void
    Clear ();

    //------------------------------------------------------------------
    /// Dumps the file list to the supplied stream pointer "s".
    ///
    /// @param[in] s
    ///     The stream that will be used to dump the object description.
    //------------------------------------------------------------------
    void
    Dump (Stream *s, const char *separator_cstr = "\n") const;

    //------------------------------------------------------------------
    /// Find a file index.
    ///
    /// Find the index of the file in the file spec list that matches
    /// \a file starting \a idx entries into the file spec list.
    ///
    /// @param[in] idx
    ///     An index into the file list.
    ///
    /// @param[in] file
    ///     The file specification to search for.
    ///
    /// @param[in] full
    ///     Should FileSpec::Equal be called with "full" true or false.
    ///
    /// @return
    ///     The index of the file that matches \a file if it is found,
    ///     else UINT32_MAX is returned.
    //------------------------------------------------------------------
    size_t
    FindFileIndex (size_t idx, const FileSpec &file, bool full) const;

    //------------------------------------------------------------------
    /// Get file at index.
    ///
    /// Gets a file from the file list. If \a idx is not a valid index,
    /// an empty FileSpec object will be returned. The file objects
    /// that are returned can be tested using
    /// FileSpec::operator void*().
    ///
    /// @param[in] idx
    ///     An index into the file list.
    ///
    /// @return
    ///     A copy of the FileSpec object at index \a idx. If \a idx
    ///     is out of range, then an empty FileSpec object will be
    ///     returned.
    //------------------------------------------------------------------
    const FileSpec &
    GetFileSpecAtIndex (size_t idx) const;

    //------------------------------------------------------------------
    /// Get file specification pointer at index.
    ///
    /// Gets a file from the file list. The file objects that are
    /// returned can be tested using FileSpec::operator void*().
    ///
    /// @param[in] idx
    ///     An index into the file list.
    ///
    /// @return
    ///     A pointer to a contained FileSpec object at index \a idx.
    ///     If \a idx is out of range, then an NULL is returned.
    //------------------------------------------------------------------
    const FileSpec *
    GetFileSpecPointerAtIndex (size_t idx) const;

    //------------------------------------------------------------------
    /// Get the memory cost of this object.
    ///
    /// Return the size in bytes that this object takes in memory. This
    /// returns the size in bytes of this object, not any shared string
    /// values it may refer to.
    ///
    /// @return
    ///     The number of bytes that this object occupies in memory.
    ///
    /// @see ConstString::StaticMemorySize ()
    //------------------------------------------------------------------
    size_t
    MemorySize () const;

    bool
    IsEmpty() const
    {
        return m_files.empty();
    }

    //------------------------------------------------------------------
    /// Get the number of files in the file list.
    ///
    /// @return
    ///     The number of files in the file spec list.
    //------------------------------------------------------------------
    size_t
    GetSize () const;

    bool
    Insert (size_t idx, const FileSpec &file)
    {
        if (idx < m_files.size())
        {
            m_files.insert(m_files.begin() + idx, file);
            return true;
        }
        else if (idx == m_files.size())
        {
            m_files.push_back(file);
            return true;
        }
        return false;
    }

    bool
    Replace (size_t idx, const FileSpec &file)
    {
        if (idx < m_files.size())
        {
            m_files[idx] = file;
            return true;
        }
        return false;
    }

    bool
    Remove (size_t idx)
    {
        if (idx < m_files.size())
        {
            m_files.erase(m_files.begin() + idx);
            return true;
        }
        return false;
    }

    static size_t GetFilesMatchingPartialPath (const char *path, bool dir_okay, FileSpecList &matches);

protected:
    typedef std::vector<FileSpec> collection;   ///< The collection type for the file list.
    collection m_files; ///< A collection of FileSpec objects.
};

} // namespace lldb_private


#endif  // #if defined(__cplusplus)
#endif  // liblldb_FileSpecList_h_