Function PREPARSE_execute

src/yvalve/preparse.cpp:158–337

PREPARSE_execute @brief @param status @param ptrAtt @param stmt_length @param stmt @param stmt_eaten @param dialect **/

 **/
bool PREPARSE_execute(CheckStatusWrapper* status, Why::YAttachment** ptrAtt,
					  string& stmt, bool* stmt_eaten, USHORT dialect)
{
	// no use creating separate pool for a couple of strings
	ContextPoolHolder context(getDefaultMemoryPool());

	try
	{
		if (stmt.isEmpty())
		{
			return false;	// let others care
		}

		bool hasUser = true;
		status->init();
		for (int qStrip = 0; qStrip < 2; ++qStrip)
		{
			hasUser = false;

			Tokens tks;
			tks.quotes(quotes);
			tks.parse(stmt.length(), stmt.c_str());

			for (int tokenPos = tks.getCount() - 1; tokenPos >= 0; --tokenPos)
			{
				const Tokens::Tok& token = tks[tokenPos];

				if (token.length > 0 && token.text[0] == '"')
				{
					string newToken = "'";

					for (unsigned i = 1; i < token.length - 1; ++i)
					{
						switch (token.text[i])
						{
							case '\'':
								newToken += "''";
								break;

							case '"':
								++i;
								newToken += '"';
								break;

							default:
								newToken += token.text[i];
						}
					}

					newToken += "'";
					stmt.replace(token.origin, token.length, newToken);
				}
			}

			unsigned pos = 0;

			if (getToken(pos, tks) != pp_symbols[PP_CREATE].symbol)
			{