www.pudn.com > SCIDE.rar > cplusplus.cpp

#include "stdafx.h" 
#include "SCView.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
//	这里是C脚本的关键字 
static LPTSTR s_apszCppKeywordList[] = 
{ 
	_T("bool"), 
	_T("break"), 
	_T("false"), 
	_T("true"), 
	_T("case"), 
	_T("float"), 
	_T("char"), 
	_T("for"), 
	_T("goto"), 
	_T("if"), 
	_T("unsigned"), 
	_T("continue"), 
	_T("return"), 
	_T("default"), 
	_T("int"), 
	_T("short"), 
	_T("signed"), 
	_T("sizeof"), 
	_T("void"), 
	_T("static"), 
	_T("do"), 
	_T("double"), 
	_T("while"), 
	_T("long"), 
	_T("else"), 
	_T("main"), 
	_T("switch"), 
	NULL 
}; 
 
static BOOL IsCppKeyword(LPCTSTR pszChars, int nLength) 
{ 
	for (int L = 0; s_apszCppKeywordList[L] != NULL; L ++) 
	{ 
		if (strncmp(s_apszCppKeywordList[L], pszChars, nLength) == 0 
				&& s_apszCppKeywordList[L][nLength] == 0) 
			return TRUE; 
	} 
	return FALSE; 
} 
 
static BOOL IsCppNumber(LPCTSTR pszChars, int nLength) 
{ 
	if (nLength > 2 && pszChars[0] == '0' && pszChars[1] == 'x') 
	{ 
		for (int I = 2; I < nLength; I++) 
		{ 
			if (isdigit(pszChars[I]) || (pszChars[I] >= 'A' && pszChars[I] <= 'F') || 
										(pszChars[I] >= 'a' && pszChars[I] <= 'f')) 
				continue; 
			return FALSE; 
		} 
		return TRUE; 
	} 
	if (! isdigit(pszChars[0])) 
		return FALSE; 
	for (int I = 1; I < nLength; I++) 
	{ 
		if (! isdigit(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 CSCView::ParseLine(DWORD dwCookie, int nLineIndex, TEXTBLOCK *pBuf, int &nActualItems) 
{ 
	int nLength = GetLineLength(nLineIndex); 
	if (nLength <= 0) 
		return dwCookie & COOKIE_EXT_COMMENT; 
 
	LPCTSTR pszChars    = GetLineChars(nLineIndex); 
	BOOL bFirstChar     = (dwCookie & ~COOKIE_EXT_COMMENT) == 0; 
	BOOL bRedefineBlock = TRUE; 
	BOOL bDecIndex  = FALSE; 
	int nIdentBegin = -1; 
	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 (dwCookie & COOKIE_PREPROCESSOR) 
			{ 
				DEFINE_BLOCK(nPos, COLORINDEX_PREPROCESSOR); 
			} 
			else 
			{ 
				DEFINE_BLOCK(nPos, COLORINDEX_NORMALTEXT); 
			} 
			bRedefineBlock = FALSE; 
			bDecIndex      = FALSE; 
		} 
 
		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 || pszChars[I - 1] != '\\')) 
			{ 
				dwCookie &= ~COOKIE_STRING; 
				bRedefineBlock = TRUE; 
			} 
			continue; 
		} 
 
		//	Char constant '..' 
		if (dwCookie & COOKIE_CHAR) 
		{ 
			if (pszChars[I] == '\'' && (I == 0 || pszChars[I - 1] != '\\')) 
			{ 
				dwCookie &= ~COOKIE_CHAR; 
				bRedefineBlock = TRUE; 
			} 
			continue; 
		} 
 
		//	Extended comment /*....*/ 
		if (dwCookie & COOKIE_EXT_COMMENT) 
		{ 
			if (I > 0 && pszChars[I] == '/' && pszChars[I - 1] == '*') 
			{ 
				dwCookie &= ~COOKIE_EXT_COMMENT; 
				bRedefineBlock = TRUE; 
			} 
			continue; 
		} 
 
		if (I > 0 && pszChars[I] == '/' && pszChars[I - 1] == '/') 
		{ 
			DEFINE_BLOCK(I - 1, COLORINDEX_COMMENT); 
			dwCookie |= COOKIE_COMMENT; 
			break; 
		} 
 
		//	Preprocessor directive #.... 
		if (dwCookie & COOKIE_PREPROCESSOR) 
		{ 
			if (I > 0 && pszChars[I] == '*' && pszChars[I - 1] == '/') 
			{ 
				DEFINE_BLOCK(I - 1, COLORINDEX_COMMENT); 
				dwCookie |= COOKIE_EXT_COMMENT; 
			} 
			continue; 
		} 
 
		//	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; 
			continue; 
		} 
 
		if (bFirstChar) 
		{ 
			if (pszChars[I] == '#') 
			{ 
				DEFINE_BLOCK(I, COLORINDEX_PREPROCESSOR); 
				dwCookie |= COOKIE_PREPROCESSOR; 
				continue; 
			} 
			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 (isalnum(pszChars[I]) || pszChars[I] == '_' || pszChars[I] == '.') 
		{ 
			if (nIdentBegin == -1) 
				nIdentBegin = I; 
		} 
		else 
		{ 
			if (nIdentBegin >= 0) 
			{ 
				if (IsCppKeyword(pszChars + nIdentBegin, I - nIdentBegin)) 
				{ 
					DEFINE_BLOCK(nIdentBegin, COLORINDEX_KEYWORD); 
				} 
				else 
				if (IsCppNumber(pszChars + nIdentBegin, I - nIdentBegin)) 
				{ 
					DEFINE_BLOCK(nIdentBegin, COLORINDEX_NUMBER); 
				} 
				bRedefineBlock = TRUE; 
				bDecIndex = TRUE; 
				nIdentBegin = -1; 
			} 
		} 
	} 
 
	if (nIdentBegin >= 0) 
	{ 
		if (IsCppKeyword(pszChars + nIdentBegin, I - nIdentBegin)) 
		{ 
			DEFINE_BLOCK(nIdentBegin, COLORINDEX_KEYWORD); 
		} 
		else 
		if (IsCppNumber(pszChars + nIdentBegin, I - nIdentBegin)) 
		{ 
			DEFINE_BLOCK(nIdentBegin, COLORINDEX_NUMBER); 
		} 
	} 
 
	if (pszChars[nLength - 1] != '\\') 
		dwCookie &= COOKIE_EXT_COMMENT; 
	return dwCookie; 
}