///////////////////////////////////////////////////////////////////////////
//
//  Copyright:  Ferdinand Prantl, portions by Stcherbatchenko Andrei
//  E-mail:     prantl@ff.cuni.cz
//
//  AutoCAD DCL 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_apszDclKeywordList[] =
  {
    _T ("boxed_column"),
    _T ("boxed_radio_column"),
    _T ("boxed_radio_row"),
    _T ("boxed_row"),
    _T ("button"),
    _T ("column"),
    _T ("concatenation"),
    _T ("dialog"),
    _T ("edit_box"),
    _T ("image"),
    _T ("list_box"),
    _T ("paragraph"),
    _T ("popup_list"),
    _T ("radio_button"),
    _T ("row"),
    _T ("slider"),
    _T ("spacer"),
    _T ("text_part"),
    _T ("text"),
    _T ("toggle"),
    NULL
  };
 
static LPCTSTR s_apszUser1KeywordList[] =
  {
    _T ("spacer_0"),
    _T ("spacer_1"),
    _T ("default_button"),
    _T ("retirement_button"),
    _T ("ok_cancel_help_errtile"),
    _T ("ok_cancel_help_info"),
    _T ("ok_cancel"),
    _T ("ok_cancel_err"),
    _T ("ok_cancel_help"),
    _T ("ok_only"),
    _T ("ok_button"),
    _T ("cancel_button"),
    _T ("help_button"),
    _T ("info_button"),
    _T ("errtile"),
    _T ("image_button"),
    _T ("radio_column"),
    _T ("radio_row"),
    NULL
  };
 
static LPCTSTR s_apszUser2KeywordList[] =
  {
    _T ("action"),
    _T ("alignment"),
    _T ("allow_accept"),
    _T ("aspect_ratio"),
    _T ("big_increment"),
    _T ("children_alignment"),
    _T ("children_fixed_height"),
    _T ("children_fixed_width"),
    _T ("edit_limit"),
    _T ("edit_width"),
    _T ("fixed_height"),
    _T ("fixed_width"),
    _T ("height"),
    _T ("initial_focus"),
    _T ("is_bold"),
    _T ("is_cancel"),
    _T ("is_default"),
    _T ("is_enabled"),
    _T ("is_tab_stop"),
    _T ("key"),
    _T ("label"),
    _T ("layout"),
    _T ("list"),
    _T ("max_value"),
    _T ("min_value"),
    _T ("mnemonic"),
    _T ("multiple_select"),
    _T ("small_increment"),
    _T ("tabs"),
    _T ("value"),
    _T ("width"),
    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
IsDclKeyword (LPCTSTR pszChars, int nLength)
{
  return IsXKeyword (s_apszDclKeywordList, pszChars, nLength);
}
 
static BOOL
IsUser1Keyword (LPCTSTR pszChars, int nLength)
{
  return IsXKeyword (s_apszUser1KeywordList, pszChars, nLength);
}
 
static BOOL
IsUser2Keyword (LPCTSTR pszChars, int nLength)
{
  return IsXKeyword (s_apszUser2KeywordList, pszChars, nLength);
}
 
static BOOL
IsDclNumber (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 TDclSyntaxParser: public TSyntaxParser {
  public:
    TDclSyntaxParser(TCoolTextWnd* parent):TSyntaxParser(parent){}
    uint32 ParseLine(uint32 cookie, int index, TCoolTextWnd::TTextBlock* buf, int& items);
};
//
_COOLEDFUNC(TSyntaxParser*) DclParserCreator(TCoolTextWnd* parent)
{
  return  new TDclSyntaxParser(parent);
}
//
uint32 TDclSyntaxParser::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;
  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 (IsDclKeyword (pszChars + nIdentBegin, I - nIdentBegin))
                {
                  DEFINE_BLOCK (nIdentBegin, COLORINDEX_KEYWORD);
                }
              else if (IsUser1Keyword (pszChars + nIdentBegin, I - nIdentBegin))
                {
                  DEFINE_BLOCK (nIdentBegin, COLORINDEX_CUSTOM0);
                }
              else if (IsUser2Keyword (pszChars + nIdentBegin, I - nIdentBegin))
                {
                  DEFINE_BLOCK (nIdentBegin, COLORINDEX_CUSTOM1);
                }
              else if (IsDclNumber (pszChars + nIdentBegin, I - nIdentBegin))
                {
                  DEFINE_BLOCK (nIdentBegin, COLORINDEX_NUMBER);
                }
              else
                {
                  bool bFunction = FALSE;
 
                  for (int j = I; j < nLength; j++)
                    {
                      if (!isspace (pszChars[j]))
                        {
                          if (pszChars[j] == '{' || pszChars[j] == ':')
                            {
                              bFunction = TRUE;
                            }
                          break;
                        }
                    }
                  if (!bFunction)
                    {
                      for (int j = nIdentBegin; --j >= 0;)
                        {
                          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 (IsDclKeyword (pszChars + nIdentBegin, I - nIdentBegin))
        {
          DEFINE_BLOCK (nIdentBegin, COLORINDEX_KEYWORD);
        }
      else if (IsUser1Keyword (pszChars + nIdentBegin, I - nIdentBegin))
        {
          DEFINE_BLOCK (nIdentBegin, COLORINDEX_CUSTOM0);
        }
      else if (IsUser2Keyword (pszChars + nIdentBegin, I - nIdentBegin))
        {
          DEFINE_BLOCK (nIdentBegin, COLORINDEX_CUSTOM1);
        }
      else if (IsDclNumber (pszChars + nIdentBegin, I - nIdentBegin))
        {
          DEFINE_BLOCK (nIdentBegin, COLORINDEX_NUMBER);
        }
      else
        {
          bool bFunction = FALSE;
 
          for (int j = I; j < nLength; j++)
            {
              if (!isspace (pszChars[j]))
                {
                  if (pszChars[j] == '{' || pszChars[j] == ':')
                    {
                      bFunction = TRUE;
                    }
                  break;
                }
            }
          if (!bFunction)
            {
              for (int j = nIdentBegin; --j >= 0;)
                {
                  if (!isspace (pszChars[j]))
                    {
                      if (pszChars[j] == ':')
                        {
                          bFunction = TRUE;
                        }
                      break;
                    }
                }
            }
          if (bFunction)
            {
              DEFINE_BLOCK (nIdentBegin, COLORINDEX_FUNCNAME);
            }
        }
    }
 
  dwCookie &= COOKIE_EXT_COMMENT;
  return dwCookie;
}