///////////////////////////////////////////////////////////////////////////
//
//  Copyright:  Ferdinand Prantl, portions by Stcherbatchenko Andrei
//  E-mail:     prantl@ff.cuni.cz
//
//  LISP (particularly AutoLISP) syntax highlighing definition
//
//  You are free to use or modify this code to the following restrictions:
//  - Acknowledge me somewhere in your about box, simple "Parts of code by.."
//  will be enough. If you can't (or don't want to), contact me personally.
//  - LEAVE THIS HEADER INTACT
////////////////////////////////////////////////////////////////////////////
 
#include <coolprj/pch.h>
#pragma hdrstop
 
#include <coolprj/cooledit.h>
 
using namespace owl;
 
//  C++ keywords (MSVC5.0 + POET5.0)
static LPCTSTR s_apszLispKeywordList[] =
  {
    _T ("abs"),
    _T ("acad_colordlg"),
    _T ("acad_helpdlg"),
    _T ("acad_strlsort"),
    _T ("action_tile"),
    _T ("add_list"),
    _T ("ads"),
    _T ("alert"),
    _T ("alloc"),
    _T ("and"),
    _T ("angle"),
    _T ("angtof"),
    _T ("angtos"),
    _T ("append"),
    _T ("apply"),
    _T ("arxload"),
    _T ("arxunload"),
    _T ("arx"),
    _T ("ascii"),
    _T ("assoc"),
    _T ("atan"),
    _T ("atof"),
    _T ("atoi"),
    _T ("atoms-family"),
    _T ("atom"),
    _T ("autoarxload"),
    _T ("autoload"),
    _T ("autoxload"),
    _T ("boole"),
    _T ("boundp"),
    _T ("caaaar"),
    _T ("caaadr"),
    _T ("caaar"),
    _T ("caadar"),
    _T ("caaddr"),
    _T ("caadr"),
    _T ("caar"),
    _T ("cadaar"),
    _T ("cadadr"),
    _T ("cadar"),
    _T ("caddar"),
    _T ("cadddr"),
    _T ("caddr"),
    _T ("cadr"),
    _T ("car"),
    _T ("cdaaar"),
    _T ("cdaadr"),
    _T ("cdaar"),
    _T ("cdadar"),
    _T ("cdaddr"),
    _T ("cdadr"),
    _T ("cdar"),
    _T ("cddaar"),
    _T ("cddadr"),
    _T ("cddar"),
    _T ("cdddar"),
    _T ("cddddr"),
    _T ("cdddr"),
    _T ("cddr"),
    _T ("cdr"),
    _T ("chr"),
    _T ("client_data_tile"),
    _T ("close"),
    _T ("command"),
    _T ("cond"),
    _T ("cons"),
    _T ("cos"),
    _T ("cvunit"),
    _T ("defun"),
    _T ("dictnext"),
    _T ("dictsearch"),
    _T ("dimx_tile"),
    _T ("dimy_tile"),
    _T ("distance"),
    _T ("distof"),
    _T ("done_dialog"),
    _T ("end_image"),
    _T ("end_list"),
    _T ("entdel"),
    _T ("entget"),
    _T ("entlast"),
    _T ("entmake"),
    _T ("entmod"),
    _T ("entnext"),
    _T ("entsel"),
    _T ("entupd"),
    _T ("equal"),
    _T ("eq"),
    _T ("eval"),
    _T ("exit"),
    _T ("expand"),
    _T ("expt"),
    _T ("exp"),
    _T ("fill_image"),
    _T ("findfile"),
    _T ("fix"),
    _T ("float"),
    _T ("foreach"),
    _T ("gcd"),
    _T ("gc"),
    _T ("get_attr"),
    _T ("get_tile"),
    _T ("getangle"),
    _T ("getcfg"),
    _T ("getcorner"),
    _T ("getdist"),
    _T ("getenv"),
    _T ("getfield"),
    _T ("getint"),
    _T ("getkword"),
    _T ("getorient"),
    _T ("getpoint"),
    _T ("getreal"),
    _T ("getstring"),
    _T ("getvar"),
    _T ("graphscr"),
    _T ("grclear"),
    _T ("grdraw"),
    _T ("grread"),
    _T ("grtext"),
    _T ("grvecs"),
    _T ("handent"),
    _T ("if"),
    _T ("help"),
    _T ("initget"),
    _T ("inters"),
    _T ("itoa"),
    _T ("lambda"),
    _T ("last"),
    _T ("length"),
    _T ("listp"),
    _T ("list"),
    _T ("load_dialog"),
    _T ("load"),
    _T ("logand"),
    _T ("logior"),
    _T ("log"),
    _T ("lsh"),
    _T ("mapcar"),
    _T ("max"),
    _T ("member"),
    _T ("mem"),
    _T ("menucmd"),
    _T ("minusp"),
    _T ("min"),
    _T ("mode_tile"),
    _T ("namedobjdict"),
    _T ("nentsel"),
    _T ("nentselp"),
    _T ("new_dialog"),
    _T ("not"),
    _T ("nth"),
    _T ("null"),
    _T ("numberp"),
    _T ("open"),
    _T ("or"),
    _T ("osnap"),
    _T ("polar"),
    _T ("prin1"),
    _T ("princ"),
    _T ("print"),
    _T ("progn"),
    _T ("prompt"),
    _T ("quit"),
    _T ("quote"),
    _T ("read-char"),
    _T ("read-line"),
    _T ("read"),
    _T ("redraw"),
    _T ("regapp"),
    _T ("rem"),
    _T ("repeat"),
    _T ("reverse"),
    _T ("rtos"),
    _T ("setcfg"),
    _T ("setfunhelp"),
    _T ("setq"),
    _T ("setvar"),
    _T ("set_tile"),
    _T ("set"),
    _T ("sin"),
    _T ("slide_image"),
    _T ("snvalid"),
    _T ("sqrt"),
    _T ("ssadd"),
    _T ("ssdel"),
    _T ("ssget"),
    _T ("sslength"),
    _T ("ssmemb"),
    _T ("ssname"),
    _T ("startapp"),
    _T ("start_dialog"),
    _T ("start_image"),
    _T ("start_list"),
    _T ("strcase"),
    _T ("strcat"),
    _T ("strlen"),
    _T ("substr"),
    _T ("subst"),
    _T ("tablet"),
    _T ("tblnext"),
    _T ("tblobjname"),
    _T ("tblsearch"),
    _T ("term_dialog"),
    _T ("terpri"),
    _T ("textbox"),
    _T ("textpage"),
    _T ("textscr"),
    _T ("trace"),
    _T ("trans"),
    _T ("type"),
    _T ("unload_dialog"),
    _T ("untrace"),
    _T ("vector_image"),
    _T ("ver"),
    _T ("vmon"),
    _T ("vports"),
    _T ("wcmatch"),
    _T ("while"),
    _T ("write-char"),
    _T ("write-line"),
    _T ("xdroom"),
    _T ("xdsize"),
    _T ("xload"),
    _T ("xunload"),
    _T ("zerop"),
    NULL
  };
 
static BOOL
IsXKeyword (LPCTSTR apszKeywords[], LPCTSTR pszChars, int nLength)
{
  for (int L = 0; apszKeywords[L] != NULL; L++)
    {
      if (_tcsncmp (apszKeywords[L], pszChars, nLength) == 0
            && apszKeywords[L][nLength] == 0)
        return TRUE;
    }
  return FALSE;
}
 
static BOOL
IsLispKeyword (LPCTSTR pszChars, int nLength)
{
  return IsXKeyword (s_apszLispKeywordList, pszChars, nLength);
}
 
static BOOL
IsLispNumber (LPCTSTR pszChars, int nLength)
{
  if (nLength > 2 && pszChars[0] == '0' && pszChars[1] == 'x')
    {
      for (int I = 2; I < nLength; I++)
        {
          if (_istdigit (pszChars[I]) || (pszChars[I] >= 'A' && pszChars[I] <= 'F') ||
                (pszChars[I] >= 'a' && pszChars[I] <= 'f'))
            continue;
          return FALSE;
        }
      return TRUE;
    }
  if (!_istdigit (pszChars[0]))
    return FALSE;
  for (int I = 1; I < nLength; I++)
    {
      if (!_istdigit (pszChars[I]) && pszChars[I] != '+' &&
            pszChars[I] != '-' && pszChars[I] != '.' && pszChars[I] != 'e' &&
            pszChars[I] != 'E')
        return FALSE;
    }
  return TRUE;
}
 
#define DEFINE_BLOCK(pos, syntaxindex)  \
  CHECK((pos) >= 0 && (pos) <= nLength);\
  if (pBuf != NULL){\
    if (nActualItems == 0 || pBuf[nActualItems - 1].CharPos <= (pos)){\
      pBuf[nActualItems].CharPos     = (pos);\
      pBuf[nActualItems].SyntaxIndex = (syntaxindex);\
      nActualItems++;\
    }\
  }
 
#define COOKIE_COMMENT          0x0001
#define COOKIE_PREPROCESSOR     0x0002
#define COOKIE_EXT_COMMENT      0x0004
#define COOKIE_STRING           0x0008
#define COOKIE_CHAR             0x0010
 
//
//
//
struct TLispSyntaxParser: public TSyntaxParser {
  public:
    TLispSyntaxParser(TCoolTextWnd* parent):TSyntaxParser(parent){}
    uint32 ParseLine(uint32 cookie, int index, TCoolTextWnd::TTextBlock* buf, int& items);
};
//
_COOLEDFUNC(TSyntaxParser*) LispParserCreator(TCoolTextWnd* parent)
{
  return  new TLispSyntaxParser(parent);
}
//
uint32 TLispSyntaxParser::ParseLine(uint32 dwCookie, int nLineIndex,
                                   TCoolTextWnd::TTextBlock* pBuf,
                                   int& nActualItems)
{
  int nLength = Parent->GetLineLength(nLineIndex);
  if (nLength <= 1)
    return dwCookie & COOKIE_EXT_COMMENT;
 
  LPCTSTR pszChars = GetLineText(nLineIndex);
  BOOL bFirstChar = (dwCookie & ~COOKIE_EXT_COMMENT) == 0;
  BOOL bRedefineBlock = TRUE;
  BOOL bWasCommentStart = FALSE;
  BOOL bDecIndex = FALSE;
  int nIdentBegin = -1;
  BOOL bDefun = FALSE;
  int I;
 
  for (I = 0;; I++)
    {
      if (bRedefineBlock)
        {
          int nPos = I;
          if (bDecIndex)
            nPos--;
          if (dwCookie & (COOKIE_COMMENT | COOKIE_EXT_COMMENT)){
              DEFINE_BLOCK (nPos, COLORINDEX_COMMENT);
            }
          else if (dwCookie & (COOKIE_CHAR | COOKIE_STRING))
            {
              DEFINE_BLOCK (nPos, COLORINDEX_STRING);
            }
          else
            {
              if (xisalnum (pszChars[nPos]) || pszChars[nPos] == '.')
                {
                  DEFINE_BLOCK (nPos, COLORINDEX_NORMALTEXT);
                }
              else
                {
                  DEFINE_BLOCK (nPos, COLORINDEX_OPERATOR);
                  bRedefineBlock = TRUE;
                  bDecIndex = TRUE;
                  goto out;
                }
            }
          bRedefineBlock = FALSE;
          bDecIndex = FALSE;
        }
out:
 
      if (I == nLength)
        break;
 
      if (dwCookie & COOKIE_COMMENT)
        {
          DEFINE_BLOCK (I, COLORINDEX_COMMENT);
          dwCookie |= COOKIE_COMMENT;
          break;
        }
 
      //  String constant "...."
      if (dwCookie & COOKIE_STRING)
        {
          if (pszChars[I] == '"' &&
            (
              I == 0 || // "...
              (I >= 1 && pszChars[I - 1] != '\\') || // ...?"...
              (I >= 2 && pszChars[I - 1] == '\\' && pszChars[I - 2] == '\\') // ...\\"...
              // TODO: What about ...\\\"...?
            ))
            {
              dwCookie &= ~COOKIE_STRING;
              bRedefineBlock = TRUE;
            }
          continue;
        }
 
      //  Char constant '..'
      if (dwCookie & COOKIE_CHAR)
        {
          if (pszChars[I] == '\'' &&
            (
              I == 0 || // '...
              (I >= 1 && pszChars[I - 1] != '\\') || // ...?'...
              (I >= 2 && pszChars[I - 1] == '\\' && pszChars[I - 2] == '\\') // ...\\'...
              // TODO: What about ...\\\'...?
            ))
            {
              dwCookie &= ~COOKIE_CHAR;
              bRedefineBlock = TRUE;
            }
          continue;
        }
 
      //  Extended comment /*....*/
      if (dwCookie & COOKIE_EXT_COMMENT)
        {
          // if (I > 0 && pszChars[I] == ';' && pszChars[I - 1] == '|')
          if ((I > 1 && pszChars[I] == ';' && pszChars[I - 1] == '|' /*&& pszChars[I - 2] != ';'*/ && !bWasCommentStart) || (I == 1 && pszChars[I] == ';' && pszChars[I - 1] == '|'))
            {
              dwCookie &= ~COOKIE_EXT_COMMENT;
              bRedefineBlock = TRUE;
            }
          bWasCommentStart = FALSE;
          continue;
        }
 
      if (I > 0 && pszChars[I] != '|' && pszChars[I - 1] == ';')
        {
          DEFINE_BLOCK (I - 1, COLORINDEX_COMMENT);
          dwCookie |= COOKIE_COMMENT;
          break;
        }
 
      //  Normal text
      if (pszChars[I] == '"')
        {
          DEFINE_BLOCK (I, COLORINDEX_STRING);
          dwCookie |= COOKIE_STRING;
          continue;
        }
      if (pszChars[I] == '\'')
        {
          DEFINE_BLOCK (I, COLORINDEX_STRING);
          dwCookie |= COOKIE_CHAR;
          continue;
        }
      if (I > 0 && pszChars[I] == '|' && pszChars[I - 1] == ';')
        {
          DEFINE_BLOCK (I - 1, COLORINDEX_COMMENT);
          dwCookie |= COOKIE_EXT_COMMENT;
          bWasCommentStart = TRUE;
          continue;
        }
 
      bWasCommentStart = FALSE;
 
      if (bFirstChar)
        {
          if (!isspace (pszChars[I]))
            bFirstChar = FALSE;
        }
 
      if (pBuf == NULL)
        continue;               //  We don't need to extract keywords,
      //  for faster parsing skip the rest of loop
 
      if (xisalnum (pszChars[I]) || pszChars[I] == '.')
        {
          if (nIdentBegin == -1)
            nIdentBegin = I;
        }
      else
        {
          if (nIdentBegin >= 0)
            {
              if (IsLispKeyword (pszChars + nIdentBegin, I - nIdentBegin))
                {
                  if (!_tcsnicmp (_T ("defun"), pszChars + nIdentBegin, 5))
                    {
                      bDefun = TRUE;
                    }
                  DEFINE_BLOCK (nIdentBegin, COLORINDEX_KEYWORD);
                }
              else if (IsLispNumber (pszChars + nIdentBegin, I - nIdentBegin))
                {
                  DEFINE_BLOCK (nIdentBegin, COLORINDEX_NUMBER);
                }
              else
                {
                  bool bFunction = FALSE;
 
                  if (!bDefun)
                    {
                      for (int j = nIdentBegin; --j >= 0;)
                        {
                          if (!isspace (pszChars[j]))
                            {
                              if (pszChars[j] == '(')
                                {
                                  bFunction = TRUE;
                                }
                              break;
                            }
                        }
                    }
                  if (!bFunction)
                    {
                      for (int j = I; j >= 0; j--)
                        {
                          if (!isspace (pszChars[j]))
                            {
                              if (pszChars[j] == '(')
                                {
                                  bFunction = TRUE;
                                }
                              break;
                            }
                        }
                    }
                  if (bFunction)
                    {
                      DEFINE_BLOCK (nIdentBegin, COLORINDEX_FUNCNAME);
                    }
                }
              bRedefineBlock = TRUE;
              bDecIndex = TRUE;
              nIdentBegin = -1;
            }
        }
    }
 
  if (nIdentBegin >= 0)
    {
      if (IsLispKeyword (pszChars + nIdentBegin, I - nIdentBegin))
        {
          if (!_tcsnicmp (_T ("defun"), pszChars + nIdentBegin, 5))
            {
              bDefun = TRUE; InUse(bDefun);
            }
          DEFINE_BLOCK (nIdentBegin, COLORINDEX_KEYWORD);
        }
      else if (IsLispNumber (pszChars + nIdentBegin, I - nIdentBegin))
        {
          DEFINE_BLOCK (nIdentBegin, COLORINDEX_NUMBER);
        }
      else
        {
          bool bFunction = FALSE;
 
          if (!bDefun)
            {
              for (int j = nIdentBegin; --j >= 0;)
                {
                  if (!isspace (pszChars[j]))
                    {
                      if (pszChars[j] == '(')
                        {
                          bFunction = TRUE;
                        }
                      break;
                    }
                }
            }
          if (!bFunction)
            {
              for (int j = I; j >= 0; j--)
                {
                  if (!isspace (pszChars[j]))
                    {
                      if (pszChars[j] == '(')
                        {
                          bFunction = TRUE;
                        }
                      break;
                    }
                }
            }
          if (bFunction)
            {
              DEFINE_BLOCK (nIdentBegin, COLORINDEX_FUNCNAME);
            }
        }
    }
 
  dwCookie &= COOKIE_EXT_COMMENT;
  return dwCookie;
}