siod.cpp

一个完整的编辑器的代码（很值得参考

IsSiodKeyword (LPCTSTR pszChars, int nLength)
{
  return IsXKeyword (s_apszSiodKeywordList, 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
IsSiodNumber (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, colorindex)   \
ASSERT((pos) >= 0 && (pos) <= nLength);\
if (pBuf != NULL)\
  {\
    if (nActualItems == 0 || pBuf[nActualItems - 1].m_nCharPos <= (pos)){\
        pBuf[nActualItems].m_nCharPos = (pos);\
        pBuf[nActualItems].m_nColorIndex = (colorindex);\
        nActualItems ++;}\
  }

#define COOKIE_COMMENT          0x0001
#define COOKIE_PREPROCESSOR     0x0002
#define COOKIE_EXT_COMMENT      0x0004
#define COOKIE_STRING           0x0008
#define COOKIE_CHAR             0x0010

DWORD CCrystalTextView::
ParseLineSiod (DWORD dwCookie, int nLineIndex, TEXTBLOCK * pBuf, int &nActualItems)
{
  int nLength = GetLineLength (nLineIndex);
  if (nLength <= 1)
    return dwCookie & COOKIE_EXT_COMMENT;

  LPCTSTR pszChars = GetLineChars (nLineIndex);
  BOOL bFirstChar = (dwCookie & ~COOKIE_EXT_COMMENT) == 0;
  BOOL bRedefineBlock = TRUE;
  BOOL bWasCommentStart = FALSE;
  BOOL bDecIndex = FALSE;
  int nIdentBegin = -1;
  BOOL bDefun = FALSE;

  for (int 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 - 1] == '\\' && pszChars[I - 2] == '\\')))
            {
              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 - 1] == '\\' && pszChars[I - 2] == '\\')))
            {
              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, COLORINDEX_COMMENT);
          dwCookie |= COOKIE_COMMENT;
          break;
        }

      //  Normal text
      if (pszChars[I] == '"')
        {
          DEFINE_BLOCK (I, COLORINDEX_STRING);
          dwCookie |= COOKIE_STRING;
          continue;
        }
      if (pszChars[I] == '\'')
        {
          // if (I + 1 < nLength && pszChars[I + 1] == '\'' || I + 2 < nLength && pszChars[I + 1] != '\\' && pszChars[I + 2] == '\'' || I + 3 < nLength && pszChars[I + 1] == '\\' && pszChars[I + 3] == '\'')
          if (!I || !xisalnum (pszChars[I - 1]))
            {
              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 (IsSiodKeyword (pszChars + nIdentBegin, I - nIdentBegin))
                {
                  if (!_tcsnicmp (_T ("defun"), pszChars + nIdentBegin, 5))
                    {
                      bDefun = TRUE;
                    }
                  DEFINE_BLOCK (nIdentBegin, COLORINDEX_KEYWORD);
                }
              else if (IsUser1Keyword (pszChars + nIdentBegin, I - nIdentBegin))
                {
                  DEFINE_BLOCK (nIdentBegin, COLORINDEX_USER1);
                }
              else if (IsUser2Keyword (pszChars + nIdentBegin, I - nIdentBegin))
                {
                  DEFINE_BLOCK (nIdentBegin, COLORINDEX_USER2);
                }
              else if (IsSiodNumber (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 (IsSiodKeyword (pszChars + nIdentBegin, I - nIdentBegin))
        {
          if (!_tcsnicmp (_T ("defun"), pszChars + nIdentBegin, 5))
            {
              bDefun = TRUE;
            }
          DEFINE_BLOCK (nIdentBegin, COLORINDEX_KEYWORD);
        }
      else if (IsUser1Keyword (pszChars + nIdentBegin, I - nIdentBegin))
        {
          DEFINE_BLOCK (nIdentBegin, COLORINDEX_USER1);
        }
      else if (IsUser2Keyword (pszChars + nIdentBegin, I - nIdentBegin))
        {
          DEFINE_BLOCK (nIdentBegin, COLORINDEX_USER2);
        }
      else if (IsSiodNumber (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;
}