//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//
// copyright            : (C) 2008 by Eran Ifrah
// file name            : entry.h
//
// -------------------------------------------------------------------------
// A
//              _____           _      _     _ _
//             /  __ \         | |    | |   (_) |
//             | /  \/ ___   __| | ___| |    _| |_ ___
//             | |    / _ \ / _  |/ _ \ |   | | __/ _ )
//             | \__/\ (_) | (_| |  __/ |___| | ||  __/
//              \____/\___/ \__,_|\___\_____/_|\__\___|
//
//                                                  F i l e
//
//    This program is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
#ifndef CODELITE_ENTRY_H
#define CODELITE_ENTRY_H

#include <wx/treectrl.h>
#include "readtags.h"
#include <wx/string.h>
#include <map>
#include <vector>
#include "smart_ptr.h"
#include "codelite_exports.h"

class TagEntry;
typedef SmartPtr<TagEntry>       TagEntryPtr;
typedef std::vector<TagEntryPtr> TagEntryPtrVector_t;

/**
 * TagEntry is a persistent object which is capable of storing and loading itself from
 * various inputs:
 * - tagEntry (ctags structure)
  *
 * It contains all the knowledge of storing and retrieving itself from the database
 *
 * \ingroup CodeLite
 * \version 1.0
 * first version
 *
 * \date 11-11-2006
 * \author Eran
 */
class WXDLLIMPEXP_CL TagEntry
{
    wxString                     m_path;		///< Tag full path
    wxString                     m_file;		///< File this tag is found
    int                          m_lineNumber;	///< Line number
    wxString                     m_pattern;		///< A pattern that can be used to locate the tag in the file
    wxString                     m_kind;		///< Member, function, class, typedef etc.
    wxString                     m_parent;		///< Direct parent
    wxTreeItemId                 m_hti;		///< Handle to tree item, not persistent item
    wxString                     m_name;		///< Tag name (short name, excluding any scope names)
    std::map<wxString, wxString> m_extFields; ///< Additional extension fields
    long                         m_id;
    wxString                     m_scope;
    bool                         m_differOnByLineNumber;
    bool                         m_isClangTag;
    void*                        m_userData;   // This member is not saved into the database
    size_t                       m_flags;      // This member is not saved into the database
    wxString                     m_comment;    // This member is not saved into the database
public:
    enum {
        Tag_No_Signature_Format  = 0x00000001, // Do not attempt to format the signature. Use the GetSignature() as is
        Tag_No_Return_Value_Eval = 0x00000002  // Do not evaluate the return value. Use GetReturnValue() instead
    };
    
    static wxString KIND_CLASS;
    static wxString KIND_ENUM;
    static wxString KIND_ENUMERATOR;
    static wxString KIND_FUNCTION;
    static wxString KIND_PROTOTYPE;
    static wxString KIND_MEMBER;
    static wxString KIND_NAMESPACE;
    static wxString KIND_VARIABLE;
    static wxString KIND_UNION;
    static wxString KIND_TYPEDEF;
    static wxString KIND_MACRO;
    static wxString KIND_STRUCT;
    static wxString KIND_FILE;
    
    // Used by std::for_each to copy elements which are constructors
    class ForEachCopyIfCtor {
        TagEntryPtrVector_t &m_matches;
    public:
        ForEachCopyIfCtor(TagEntryPtrVector_t &v) : m_matches(v) {}
        void operator()(TagEntryPtr tag) {
            if ( tag->IsConstructor() ) {
                m_matches.push_back( tag );
            }
        }
    };
public:
    /**
     * Construct a TagEntry from tagEntry struct
     * \param entry Tag entry
     */
    TagEntry(const tagEntry& entry);

    void SetComment(const wxString& comment) {
        this->m_comment = comment;
    }
    const wxString& GetComment() const {
        return m_comment;
    }
    void SetFlags(size_t flags) {
        this->m_flags = flags;
    }
    size_t GetFlags() const {
        return m_flags;
    }
    /**
     * Default constructor.
     */
    TagEntry();

    void FromLine(const wxString &line);

    /**
     * Copy constructor.
     */
    TagEntry(const TagEntry& rhs);

    /**
     * \param rhs Source to copy from (right hand side)
     * \return this
     */
    TagEntry& operator=(const TagEntry& rhs);

    /**
     * Compare two TagEntry objects.
     * \param rhs Right hand side
     * \return true if identical, false otherwise
     */
    bool operator==(const TagEntry& rhs);

    /**
     *	Destructor
     */
    virtual ~TagEntry();

    /**
     * Construct a TagEntry from tagEntry struct.
     * \param entry Tag entry
     */
    void Create(const tagEntry& entry);

    /**
     * Construct a TagEntry from values.
     * \param fileName File name
     * \param name Tag name
     * \param lineNumber Tag line number
     * \param pattern Pattern
     * \param kind Tag kind (class, struct, etc)
     * \param extFields Map of extenstion fields (key:value)
     * \param project Project name
     */
    void Create(const wxString &fileName,
                const wxString &name,
                int lineNumber,
                const wxString &pattern,
                const wxString &kind,
                std::map<wxString, wxString>& extFields);

    /**
     * Test if this entry has been initialised.
     * \return true if this tag entry has been initialised
     */
    const bool IsOk() const {
        return GetKind() != _T("<unknown>");
    }

    /**
     * Test of this tag is a container (class, union, struct or namespace
     */
    const bool IsContainer() const;

    /**
     * @brief return true if this tag represents a constructor
     */
    bool IsConstructor() const;
    /**
     * @brief return true if this tag represents a destructor
     */
    bool IsDestructor() const;

    /**
     * @brief return true of the this tag is a function or prototype
     */
    bool IsMethod() const;

    bool IsFunction() const;
    bool IsPrototype() const;
    bool IsMacro() const;
    bool IsClass() const;
    bool IsStruct() const;
    bool IsScopeGlobal() const;
    bool IsTypedef() const;

    //------------------------------------------
    // Operations
    //------------------------------------------
    bool GetDifferOnByLineNumber() const {
        return m_differOnByLineNumber;
    }

    int GetId() const {
        return m_id;
    }
    void SetId(int id) {
        m_id = id;
    }

    const wxString& GetName() const {
        return m_name;
    }
    void SetName(const wxString& name) {
        m_name = name;
    }

    const wxString& GetPath() const {
        return m_path;
    }
    void SetPath(const wxString& path) {
        m_path = path;
    }

    const wxString& GetFile() const {
        return m_file;
    }
    void SetFile(const wxString& file) {
        m_file = file;
    }

    int GetLine() const {
        return m_lineNumber;
    }
    void SetLine(int line) {
        m_lineNumber = line;
    }

    wxString GetPattern() const;
    void SetPattern(const wxString& pattern) {
        m_pattern = pattern;
    }

    wxString GetKind() const;
    void SetKind(const wxString& kind) {
        m_kind = kind;
    }

    const wxString& GetParent() const {
        return m_parent;
    }
    void SetParent(const wxString& parent) {
        m_parent = parent;
    }

    wxTreeItemId& GetTreeItemId() {
        return m_hti;
    }
    void SetTreeItemId(wxTreeItemId& hti) {
        m_hti = hti;
    }

    wxString GetAccess() const {
        return GetExtField(_T("access"));
    }
    void SetAccess(const wxString &access) {
        m_extFields[wxT("access")] = access;
    }

    wxString GetSignature() const {
        return GetExtField(_T("signature"));
    }
    void SetSignature(const wxString &sig) {
        m_extFields[wxT("signature")] = sig;
    }

    void SetInherits ( const wxString &inherits ) {
        m_extFields[_T("inherits")] = inherits;
    }
    void SetTyperef  ( const wxString &typeref  ) {
        m_extFields[_T("typeref")]   = typeref;
    }

    wxString GetInheritsAsString                  () const;
    wxArrayString GetInheritsAsArrayNoTemplates   () const;
    wxArrayString GetInheritsAsArrayWithTemplates () const;

    wxString GetTyperef() const {
        return GetExtField(_T("typeref"));
    }

    void     SetReturnValue(const wxString &retVal  ) {
        m_extFields[_T("returns")]   = retVal;
    }
    wxString GetReturnValue() const;

    const wxString &GetScope() const {
        return m_scope;
    }
    void SetScope(const wxString &scope) {
        m_scope = scope;
    }

    /**
     * \return Scope name of the tag.
     * If path is empty in db or contains just the project name, it will return the literal <global>.
     * For project tags, an empty string is returned.
     */
    wxString GetScopeName() const;

    /**
     * Generate a Key for this tag based on its attributes
     * \return tag key
     */
    wxString Key() const;

    /**
     * Generate a display name for this tag to be used by the symbol tree
     * \return tag display name
     */
    wxString GetDisplayName() const;

    /**
     * Generate a full display name for this tag that includes:
     * full scope + name + signature
     * \return tag full display name
     */
    wxString GetFullDisplayName() const;

    /**
     * Return the actual name as described in the 'typeref' field
     * \return real name or wxEmptyString
     */
    wxString NameFromTyperef(wxString &templateInitList, bool nameIncludeTemplate = false);

    /**
     * Return the actual type as described in the 'typeref' field
     * \return real name or wxEmptyString
     */
    wxString TypeFromTyperef() const;
    //------------------------------------------
    // Extenstion fields
    //------------------------------------------
    wxString GetExtField(const wxString& extField) const {
        std::map<wxString, wxString>::const_iterator iter = m_extFields.find(extField);
        if(iter == m_extFields.end())
            return wxEmptyString;
        return iter->second;
    }

    /**
     * @brief mark this tag has clang generated tag
     */
    void SetIsClangTag(bool isClangTag) {
        this->m_isClangTag = isClangTag;
    }

    /**
     * @brief return true if this tag was generated by clang
     */
    bool GetIsClangTag() const {
        return m_isClangTag;
    }
    /**
     * @brief set the user data. The user data must live as long as this object is in scope
     * The tag entry class DOES NOT take ownership over the data. it is up to the user to delete
     * it for preventing memory leak.
     */
    void SetUserData(void* userData) {
        this->m_userData = userData;
    }
    /**
     * @brief return the associated user data for this tag entry
     */
    void* GetUserData() {
        return m_userData;
    }
    //------------------------------------------
    // Misc
    //------------------------------------------
    void Print();

    TagEntryPtr ReplaceSimpleMacro();

    /**
     * @brief return 0 if the values are the same. < 0 if a < b and > 0 if a > b
     */
    int CompareDisplayString(const TagEntryPtr& rhs) const;
private:
    /**
     * Update the path with full path (e.g. namespace::class)
     * \param path path to add
     */
    void UpdatePath        (wxString & path);
    bool TypedefFromPattern(const wxString &tagPattern, const wxString &typedefName, wxString &name, wxString &templateInit, bool nameIncludeTemplate = false);
};

#endif // CODELITE_ENTRY_H