Example #1
0
Parse_stat MCAdd::parse(MCScriptPoint &sp)
{
	initpoint(sp);
	if (sp.parseexp(False, True, &source) != PS_NORMAL)
	{
		MCperror->add(PE_ADD_BADEXP, sp);
		return PS_ERROR;
	}
	if (sp.skip_token(SP_FACTOR, TT_TO) == PS_ERROR)
	{
		MCperror->add(PE_ADD_NOTO, sp);
		return PS_ERROR;
	}
	Symbol_type type;
	// MW-2011-06-22: [[ SERVER ]] Update to use SP findvar method to take into account
	//   execution outwith a handler.
	if (sp.next(type) != PS_NORMAL || type != ST_ID || sp.findvar(sp.gettoken_nameref(), &destvar) != PS_NORMAL)
	{
		sp.backup();
		dest = new (nothrow) MCChunk(True);
		if (dest->parse(sp, False) != PS_NORMAL)
		{
			MCperror->add(PE_ADD_BADDEST, sp);
			return PS_ERROR;
		}
	}
	else
		destvar->parsearray(sp);
	
	// MW-2013-08-01: [[ Bug 10925 ]] If the dest chunk is just a var, extract the varref.
	if (dest != NULL && dest -> isvarchunk())
		destvar = dest -> getrootvarref();

	return PS_NORMAL;
}
Example #2
0
Parse_stat MCChoose::parse(MCScriptPoint &sp)
{
	Symbol_type type;
	const LT *te;

	initpoint(sp);
	sp.skip_token(SP_FACTOR, TT_THE);
	if (sp.next(type) != PS_NORMAL)
	{
		MCperror->add(PE_CHOOSE_NOTOKEN, sp);
		return PS_ERROR;
	}
	if (sp.lookup(SP_TOOL, te) != PS_NORMAL)
	{
		sp.backup();
		if (sp.parseexp(False, True, &etool) != PS_NORMAL)
		{
			MCperror->add(PE_CHOOSE_BADEXP, sp);
			return PS_ERROR;
		}
		sp.skip_token(SP_TOOL, TT_END);
		return PS_NORMAL;
	}
	else
	{
		littool = (Tool)te->which;
		while (sp.skip_token(SP_TOOL, TT_TOOL) == PS_NORMAL)
			;
		sp.skip_token(SP_TOOL, TT_END);
	}
	return PS_NORMAL;
}
Example #3
0
Parse_stat MCFind::parse(MCScriptPoint &sp)
{
	Symbol_type type;
	const LT *te;

	initpoint(sp);

	if (sp.next(type) != PS_NORMAL)
	{
		MCperror->add
		(PE_FIND_NOSTRING, sp);
		return PS_ERROR;
	}
	if (sp.lookup(SP_FIND, te) == PS_NORMAL)
		mode = (Find_mode)te->which;
	else
		sp.backup();
	if (sp.parseexp(False, True, &tofind) != PS_NORMAL)
	{
		MCperror->add
		(PE_FIND_BADSTRING, sp);
		return PS_ERROR;
	}
	if (sp.skip_token(SP_FACTOR, TT_IN) == PS_NORMAL)
	{
		field = new MCChunk(False);
		if (field->parse(sp, False) != PS_NORMAL)
		{
			MCperror->add
			(PE_FIND_BADFIELD, sp);
			return PS_ERROR;
		}
	}
	return PS_NORMAL;
}
Example #4
0
Parse_stat MCReturn::parse(MCScriptPoint &sp)
{
	initpoint(sp);
	if (sp.parseexp(False, True, &source) != PS_NORMAL)
	{
		MCperror->add
		(PE_RETURN_BADEXP, sp);
		return PS_ERROR;
	}
	if (sp.skip_token(SP_REPEAT, TT_UNDEFINED, RF_WITH) == PS_NORMAL)
	{
		if (sp.skip_token(SP_FACTOR, TT_CHUNK, CT_URL))
		{
			// MW-2011-06-22: [[ SERVER ]] Update to use SP findvar method to take into account
			//   execution outwith a handler.
			Symbol_type type;
			if (sp.next(type) != PS_NORMAL || sp.findvar(sp.gettoken_nameref(), &var) != PS_NORMAL)
				sp.backup();
			else
				var->parsearray(sp);
		}
		if (var == NULL)
		{
			sp.skip_token(SP_FACTOR, TT_FUNCTION, F_CACHED_URLS);
			if (sp.parseexp(False, True, &url) != PS_NORMAL)
			{
				MCperror->add
				(PE_RETURN_BADEXP, sp);
				return PS_ERROR;
			}
		}
	}
	return PS_NORMAL;
}
Example #5
0
Parse_stat MCWait::parse(MCScriptPoint &sp)
{
	Symbol_type type;
	const LT *te;

	initpoint(sp);

	if (sp.next(type) != PS_NORMAL)
	{
		MCperror->add
		(PE_WAIT_NODURATION, sp);
		return PS_ERROR;
	}
	if (sp.lookup(SP_REPEAT, te) == PS_NORMAL)
		condition = (Repeat_form)te->which;
	else
	{
		condition = RF_FOR;
		sp.backup();
	}

	if (sp.skip_token(SP_MOVE, TT_UNDEFINED, MM_MESSAGES) == PS_NORMAL)
		messages = True;
	else
	{
		if (sp.parseexp(False, True, &duration) != PS_NORMAL)
		{
			MCperror->add
			(PE_WAIT_BADCOND, sp);
			return PS_ERROR;
		}
		if (condition == RF_FOR)
			if (sp.skip_token(SP_FACTOR, TT_FUNCTION, F_MILLISECS) == PS_NORMAL)
				units = F_MILLISECS;
			else
				if (sp.skip_token(SP_FACTOR, TT_FUNCTION, F_SECONDS) == PS_NORMAL
				        || sp.skip_token(SP_FACTOR, TT_CHUNK, CT_SECOND) == PS_NORMAL)
					units = F_SECONDS;
				else
					if (sp.skip_token(SP_FACTOR, TT_FUNCTION, F_TICKS) == PS_NORMAL)
						units = F_TICKS;
					else
						units = F_TICKS;
		if (sp.skip_token(SP_REPEAT, TT_UNDEFINED, RF_WITH) == PS_NORMAL)
		{
			sp.skip_token(SP_MOVE, TT_UNDEFINED, MM_MESSAGES);
			messages = True;
		}
	}
	return PS_NORMAL;
}
Example #6
0
// put [ unicode | binary ] <expr>
// put [ unicode ] ( content | markup ) <expr>
// put [ new ] header <expr>
// put [ secure ] [ httponly ] cookie <name> [ for <path> ] [ on <domain> ] to <value> [ until <expiry> ]
// put <expr> ( into | after | before ) message [ box ]
// put <expr> ( into | after | before ) <chunk>
//
Parse_stat MCPut::parse(MCScriptPoint &sp)
{
	Symbol_type type;
	const LT *te;

	initpoint(sp);
	
	// IM-2011-08-22: [[ SERVER ]] Add support for new put variant.
	// Parse: put [ secure ] [ httponly ] cookie <name> [ for path ] [ on domain ] with <value> [ until expires ]
	if (sp . skip_token(SP_SERVER, TT_SERVER, SK_SECURE) == PS_NORMAL)
		is_secure = true;
	
	if (sp . skip_token(SP_SERVER, TT_SERVER, SK_HTTPONLY) == PS_NORMAL)
		is_httponly = true;
	
	if (sp . skip_token(SP_SERVER, TT_PREP, PT_COOKIE) == PS_NORMAL)
	{
		prep = PT_COOKIE;
		if (sp . parseexp(True, False, &name) != PS_NORMAL)
		{
			MCperror->add(PE_PUT_BADEXP, sp);
			return PS_ERROR;
		}
		if (sp . skip_token(SP_REPEAT, TT_UNDEFINED, RF_FOR) == PS_NORMAL)
		{
			if (sp . parseexp(True, False, &path) != PS_NORMAL)
			{
				MCperror->add(PE_PUT_BADEXP, sp);
				return PS_ERROR;
			}
		}
		if (sp . skip_token(SP_FACTOR, TT_OF, PT_ON) == PS_NORMAL)
		{
			if (sp . parseexp(True, False, &domain) != PS_NORMAL)
			{
				MCperror->add(PE_PUT_BADEXP, sp);
				return PS_ERROR;
			}
		}
		sp . skip_token(SP_REPEAT, TT_UNDEFINED, RF_WITH);
		if (sp . parseexp(True, False, &source) != PS_NORMAL)
		{
			MCperror->add(PE_PUT_BADEXP, sp);
			return PS_ERROR;
		}
		if (sp . skip_token(SP_REPEAT, TT_UNDEFINED, RF_UNTIL) == PS_NORMAL)
		{
			if (sp . parseexp(True, False, &expires) != PS_NORMAL)
			{
				MCperror->add(PE_PUT_BADEXP, sp);
				return PS_ERROR;
			}
		}
		
		return PS_NORMAL;
	}
	
	if (is_secure || is_httponly)
	{
		MCperror->add(PE_PUT_BADPREP, sp);
		return PS_ERROR;
	}
	
	// MW-2011-06-22: [[ SERVER ]] Add support for new put variant.
	// Parse: put new header <expr>
	if (sp.skip_token(SP_SERVER, TT_SERVER, SK_NEW) == PS_NORMAL)
	{
		if (sp.skip_token(SP_SERVER, TT_PREP, PT_HEADER) == PS_NORMAL)
		{
			prep = PT_NEW_HEADER;
			if (sp . parseexp(False, True, &source) != PS_NORMAL)
			{
				MCperror->add(PE_PUT_BADEXP, sp);
				return PS_ERROR;
			}
			
			return PS_NORMAL;
		}
		else
			sp.backup();			
	}

	// MW-2012-02-23: [[ UnicodePut ]] Store whether 'unicode' was present
	//   in the ast.
	if (sp . skip_token(SP_SERVER, TT_SERVER, SK_UNICODE) == PS_NORMAL)
		is_unicode = true;

	// MW-2011-06-22: [[ SERVER ]] Add support for new put variant.
	// Parse: put [ unicode ] ( header | content | markup ) <expr>	
	if (sp.next(type) == PS_NORMAL)
	{
		if (sp.lookup(SP_SERVER, te) == PS_NORMAL && te -> type == TT_PREP)
		{
			prep = (Preposition_type)te -> which;
			if (is_unicode && (prep == PT_HEADER || prep == PT_BINARY))
			{
				MCperror->add(PE_PUT_BADPREP, sp);
				return PS_ERROR;
			}
			
			if (sp . parseexp(False, True, &source) != PS_NORMAL)
			{
				MCperror->add(PE_PUT_BADEXP, sp);
				return PS_ERROR;
			}
			
			return PS_NORMAL;
		}
		else
			sp.backup();
	}

	if (sp.parseexp(False, True, &source) != PS_NORMAL)
	{
		MCperror->add(PE_PUT_BADEXP, sp);
		return PS_ERROR;
	}
	
	if (sp.next(type) != PS_NORMAL)
		return PS_NORMAL;
		
	if (sp.lookup(SP_FACTOR, te) != PS_NORMAL || te->type != TT_PREP)
	{
		sp.backup();
		return PS_NORMAL;
	}
	prep = (Preposition_type)te->which;
	if (prep != PT_BEFORE && prep != PT_INTO && prep != PT_AFTER)
	{
		MCperror->add(PE_PUT_BADPREP, sp);
		return PS_ERROR;
	}
	if (sp.skip_token(SP_SHOW, TT_UNDEFINED, SO_MESSAGE) == PS_NORMAL)
	{
		sp.skip_token(SP_SHOW, TT_UNDEFINED, SO_MESSAGE); // "box"
		return PS_NORMAL;
	}
	dest = new MCChunk(True);
	if (dest->parse(sp, False) != PS_NORMAL)
	{
		MCperror->add(PE_PUT_BADCHUNK, sp);
		return PS_ERROR;
	}

	MCVarref *t_src_ref, *t_dst_ref;
	t_src_ref = source -> getrootvarref();
	t_dst_ref = dest -> getrootvarref();
	overlap = t_src_ref != NULL && t_dst_ref != NULL && t_src_ref -> rootmatches(t_dst_ref);

	return PS_NORMAL;
}
Example #7
0
Parse_stat MCMarking::parse(MCScriptPoint &sp)
{
	Symbol_type type;
	const LT *te;

	initpoint(sp);

	if (sp.next(type) != PS_NORMAL)
	{
		MCperror->add
		(PE_MARK_NOCARDS, sp);
		return PS_ERROR;
	}
	if (sp.lookup(SP_MARK, te) != PS_NORMAL)
	{
		sp.backup();
		card = new MCChunk(False);
		if (card->parse(sp, False) != PS_NORMAL)
		{
			MCperror->add
			(PE_MARK_NOTCARDS, sp);
			return PS_ERROR;
		}
		return PS_NORMAL;
	}
	if (te->which == MC_ALL)
	{
		if (sp.skip_token(SP_MARK, TT_UNDEFINED, MC_CARDS) != PS_NORMAL)
		{
			MCperror->add
			(PE_MARK_NOCARDS, sp);
			return PS_ERROR;
		}
		return PS_NORMAL;
	}
	if (te->which != MC_CARDS)
	{
		MCperror->add
		(PE_MARK_NOCARDS, sp);
		return PS_ERROR;
	}
	if (sp.next(type) != PS_NORMAL)
	{
		MCperror->add
		(PE_MARK_NOBYORWHERE, sp);
		return PS_ERROR;
	}
	if (sp.lookup(SP_MARK,te) != PS_NORMAL
	        || te->which != MC_BY && te->which != MC_WHERE)
	{
		MCperror->add
		(PE_MARK_NOTBYORWHERE, sp);
		return PS_ERROR;
	}
	if (te->which == MC_WHERE)
	{
		if (sp.parseexp(False, True, &where) != PS_NORMAL)
		{
			MCperror->add
			(PE_MARK_BADWHEREEXP, sp);
			return PS_ERROR;
		}
		return PS_NORMAL;
	}
	if (sp.skip_token(SP_MARK, TT_UNDEFINED, MC_FINDING) != PS_NORMAL)
	{
		MCperror->add
		(PE_MARK_NOFINDING, sp);
		return PS_ERROR;
	}
	if (sp.next(type) != PS_NORMAL)
	{
		MCperror->add
		(PE_MARK_NOSTRING, sp);
		return PS_ERROR;
	}
	if (sp.lookup(SP_FIND, te) == PS_NORMAL)
		mode = (Find_mode)te->which;
	else
		sp.backup();
	if (sp.parseexp(False, True, &tofind) != PS_NORMAL)
	{
		MCperror->add
		(PE_MARK_BADSTRING, sp);
		return PS_ERROR;
	}
	if (sp.skip_token(SP_FACTOR, TT_IN) == PS_NORMAL)
	{
		field = new MCChunk(False);
		if (field->parse(sp, False) != PS_NORMAL)
		{
			MCperror->add
			(PE_MARK_BADFIELD, sp);
			return PS_ERROR;
		}
	}
	return PS_NORMAL;
}
Example #8
0
Parse_stat MCConvert::parsedtformat(MCScriptPoint &sp, Convert_form &firstform,
                                    Convert_form &secondform)
{
	const LT *te;
	Symbol_type type;
	Boolean needformat = True;
	Convert_form localeform = CF_UNDEFINED;
	while (True)
	{
		if (sp.next(type) != PS_NORMAL)
		{
			if (needformat)
			{
				MCperror->add
				(PE_CONVERT_NOFORMAT, sp);
				return PS_ERROR;
			}
			else
				return PS_NORMAL;
		}
		if (sp.lookup(SP_CONVERT, te) != PS_NORMAL)
		{
			if (needformat)
			{
				MCperror->add
				(PE_CONVERT_NOTFORMAT, sp);
				return PS_ERROR;
			}
			else
			{
				sp.backup();
				break;
			}
		}
		switch (te->which)
		{
		case CF_ABBREVIATED:
		case CF_SHORT:
		case CF_LONG:
		case CF_INTERNET:
			if (firstform == CF_UNDEFINED)
				firstform = (Convert_form)te->which;
			else
				secondform = (Convert_form)te->which;
			break;
		case CF_SYSTEM:
		case CF_ENGLISH:
			localeform = (Convert_form)te->which;
			break;
		case CF_DATE:
		case CF_TIME:
			if (firstform == CF_UNDEFINED)
				firstform = (Convert_form)(te->which + 1 + localeform);
			else
				if (firstform > CF_INTERNET)
				{
					if (secondform == CF_UNDEFINED)
						secondform = (Convert_form)(te->which + 1 + localeform);
					else
					{
						uint2 dummy = secondform;
						dummy += te->which + localeform;
						secondform = (Convert_form)dummy;
					}
				}
				else
				{
					uint2 dummy = firstform;
					dummy += te->which + localeform;
					firstform = (Convert_form)dummy;
				}
			needformat = False;
			break;
		default:
			firstform = (Convert_form)te->which;
			return PS_NORMAL;
		}
		if (sp.skip_token(SP_FACTOR, TT_BINOP, O_AND) == PS_NORMAL)
		{
			if (needformat)
			{
				MCperror->add
				(PE_CONVERT_BADAND, sp);
				return PS_ERROR;
			}
			else
				needformat = True;
		}
		else
			if (!needformat)
				break;
	}
	return PS_NORMAL;
}
Example #9
0
Parse_stat MCSort::parse(MCScriptPoint &sp)
{
	Symbol_type type;
	const LT *te;

	initpoint(sp);

	while (True)
	{
		if (sp.next(type) != PS_NORMAL)
			if (of == NULL && chunktype == CT_FIELD)
			{
				MCperror->add
				(PE_SORT_NOTARGET, sp);
				return PS_ERROR;
			}
			else
				break;
		if (sp.lookup(SP_SORT, te) == PS_NORMAL)
		{
			switch (te->which)
			{
			case ST_OF:
				of = new MCChunk(True);
				if (of->parse(sp, False) != PS_NORMAL)
				{
					MCperror->add
					(PE_SORT_BADTARGET, sp);
					return PS_ERROR;
				}
				break;
			case ST_BY:
				if (chunktype == CT_FIELD && of == NULL)
					chunktype = CT_CARD;
				if (sp.parseexp(False, True, &by) != PS_NORMAL)
				{
					MCperror->add
					(PE_SORT_BADEXPRESSION, sp);
					return PS_ERROR;
				}
				if (of == NULL && chunktype == CT_FIELD)
				{
					MCperror->add
					(PE_SORT_NOTARGET, sp);
					return PS_ERROR;
				}
				return PS_NORMAL;
			case ST_LINES:
				chunktype = CT_LINE;
				break;
			case ST_ITEMS:
				chunktype = CT_ITEM;
				break;
			case ST_MARKED:
				chunktype = CT_MARKED;
				break;
			case ST_CARDS:
				if (chunktype != CT_MARKED)
					chunktype = CT_CARD;
				break;
			case ST_TEXT:
			case ST_NUMERIC:
			case ST_INTERNATIONAL:
			case ST_DATETIME:
				format = (Sort_type)te->which;
				break;
			case ST_ASCENDING:
			case ST_DESCENDING:
				direction = (Sort_type)te->which;
				break;
			}
		}
		else
		{
			sp.backup();
			if (of == NULL)
			{
				of = new MCChunk(True);
				if (of->parse(sp, False) != PS_NORMAL)
				{
					MCperror->add
					(PE_SORT_BADTARGET, sp);
					return PS_ERROR;
				}
			}
			else
				break;
		}
	}
	return PS_NORMAL;
}
Example #10
0
Parse_stat MCArrayOp::parse(MCScriptPoint &sp)
{
	initpoint(sp);
	Symbol_type type;

	// MW-2008-08-20: [[ Bug 6954 ]] Split/Combine don't work on array keys
	// MW-2011-06-22: [[ SERVER ]] Update to use SP findvar method to take into account
	//   execution outwith a handler.
	if (sp.next(type) != PS_NORMAL || type != ST_ID
	        || sp.findvar(sp.gettoken_nameref(), &destvar) != PS_NORMAL
			|| destvar -> parsearray(sp) != PS_NORMAL)
	{
		MCperror->add(PE_ARRAYOP_BADARRAY, sp);
		return PS_ERROR;
	}
	
	if (sp.skip_token(SP_REPEAT, TT_UNDEFINED, RF_WITH) != PS_NORMAL
	        && sp.skip_token(SP_FACTOR, TT_PREP, PT_BY) != PS_NORMAL
	        && sp.skip_token(SP_START, TT_UNDEFINED, SC_USING) != PS_NORMAL)
	{
		MCperror->add(PE_ARRAYOP_NOWITH, sp);
		return PS_ERROR;
	}
	
	if (sp . next(type) == PS_NORMAL && type == ST_ID && 
		  (sp . gettoken() == "column" || sp . gettoken() == "row"))
	{
		if (sp . gettoken() == "column")
			mode = TYPE_COLUMN;
		else
			mode = TYPE_ROW;
	}
	else
	{
		sp.backup();

		if (sp.parseexp(True, False, &element) != PS_NORMAL)
		{
			MCperror->add(PE_ARRAYOP_BADEXP, sp);
			return PS_ERROR;
		}

		if (sp.skip_token(SP_FACTOR, TT_BINOP, O_AND) == PS_NORMAL)
			if (sp.parseexp(True, False, &key) != PS_NORMAL)
			{
				MCperror->add(PE_ARRAYOP_BADEXP, sp);
				return PS_ERROR;
			}
	}
	
	if (sp . skip_token(SP_FACTOR, TT_PREP, PT_AS) == PS_NORMAL)
	{
		if (sp . skip_token(SP_COMMAND, TT_STATEMENT, S_SET) != PS_NORMAL ||
			key != nil)
		{
			MCperror -> add(PE_ARRAYOP_BADFORM, sp);
			return PS_ERROR;
		}
		
		form = FORM_SET;
	}

	return PS_NORMAL;
}
Example #11
0
Parse_stat MCStatement::gettargets(MCScriptPoint &sp, MCChunk **targets,
                                   Boolean forset)
{
	Boolean needchunk = False;
	MCChunk *pptr = NULL;
	while (True)
	{
		if (sp.skip_token(SP_COMMAND, TT_ELSE, S_UNDEFINED) == PS_NORMAL)
		{
			sp.backup();
			return PS_NORMAL;
		}
		Symbol_type type;
		switch (sp.next(type))
		{
		case PS_NORMAL:
			sp.backup();
			break;
		case PS_ERROR:
			return PS_ERROR;
		case PS_EOL:
		case PS_EOF:
			if (needchunk)
			{
				MCperror->add
				(PE_STATEMENT_BADCHUNK, sp);
				return PS_ERROR;
			}
			return PS_NORMAL;
		default:
			sp.backup();
			return PS_NORMAL;
		}
		MCChunk *newptr = new MCChunk(forset);
		if (newptr->parse(sp, False) != PS_NORMAL)
		{
			delete newptr;
			MCperror->add
			(PE_STATEMENT_BADCHUNK, sp);
			return PS_ERROR;
		}
		if (pptr == NULL)
			*targets = pptr = newptr;
		else
		{
			pptr->next = newptr;
			pptr = pptr->next;
		}
		if (sp.skip_token(SP_COMMAND, TT_ELSE, S_UNDEFINED) == PS_NORMAL
		        || sp.skip_token(SP_FACTOR, TT_TO, PT_TO) == PS_NORMAL)
		{
			sp.backup();
			return PS_NORMAL;
		}
		switch (sp.skip_token(SP_FACTOR, TT_BINOP, O_AND))
		{
		case PS_NORMAL:
			break;
		case PS_EOL:
		case PS_EOF:
			return PS_NORMAL;
		default:
			MCperror->add
			(PE_STATEMENT_NOTAND, sp);
			return PS_ERROR;
		}
		needchunk = True;
	}
	return PS_NORMAL;
}
Example #12
0
Parse_stat MCStatement::getmods(MCScriptPoint &sp, uint2 &mstate)
{
	Symbol_type type;
	const LT *te;

	while (True)
	{
		if (sp.next(type) != PS_NORMAL)
		{
			MCperror->add
			(PE_STATEMENT_NOKEY, sp);
			return PS_ERROR;
		}
		if (sp.lookup(SP_FACTOR, te) != PS_NORMAL || te->type != TT_FUNCTION)
		{
			MCperror->add
			(PE_STATEMENT_BADKEY, sp);
			return PS_ERROR;
		}
		switch (te->which)
		{
		case F_COMMAND_KEY:
			mstate |= MS_CONTROL;
			break;
		case F_CONTROL_KEY:
			mstate |= MS_MAC_CONTROL;
			break;
		case F_OPTION_KEY:
			mstate |= MS_MOD1;
			break;
		case F_SHIFT_KEY:
			mstate |= MS_SHIFT;
			break;
		default:
			MCperror->add
			(PE_STATEMENT_BADKEY, sp);
			return PS_ERROR;
		}
		if (sp.skip_token(SP_COMMAND, TT_ELSE, S_UNDEFINED) == PS_NORMAL)
		{
			sp.backup();
			return PS_NORMAL;
		}
		switch (sp.next(type))
		{
		case PS_NORMAL:
			break;
		case PS_EOL:
		case PS_EOF:
			return PS_NORMAL;
		default:
			MCperror->add
			(PE_STATEMENT_BADSEP, sp);
			return PS_ERROR;
		}
		if (type != ST_SEP)
		{
			MCperror->add
			(PE_STATEMENT_BADSEP, sp);
			return PS_ERROR;
		}
	}
	return PS_NORMAL;
}
Example #13
0
Parse_stat MCStatement::getparams(MCScriptPoint &sp, MCParameter **params)
{
	Boolean needparam = False;
	MCParameter *pptr = NULL;
	while (True)
	{
		if (sp.skip_token(SP_COMMAND, TT_ELSE, S_UNDEFINED) == PS_NORMAL)
		{
			sp.backup();
			return PS_NORMAL;
		}
		Symbol_type type;
		switch (sp.next(type))
		{
		case PS_NORMAL:
			sp.backup();
			break;
		case PS_ERROR:
			return PS_ERROR;
		case PS_EOL:
		case PS_EOF:
			if (needparam)
			{
				MCperror->add
				(PE_STATEMENT_BADPARAM, sp);
				return PS_ERROR;
			}
			return PS_NORMAL;
		default:
			sp.backup();
			return PS_NORMAL;
		}
		MCParameter *newptr = new MCParameter;
		if (newptr->parse(sp) != PS_NORMAL)
		{
			delete newptr;
			MCperror->add
			(PE_STATEMENT_BADPARAM, sp);
			return PS_ERROR;
		}
		if (pptr == NULL)
			*params = pptr = newptr;
		else
		{
			pptr->setnext(newptr);
			pptr = newptr;
		}
		if (sp.skip_token(SP_COMMAND, TT_ELSE, S_UNDEFINED) == PS_NORMAL)
		{
			sp.backup();
			return PS_NORMAL;
		}
		switch (sp.next(type))
		{
		case PS_NORMAL:
			break;
		case PS_EOL:
		case PS_EOF:
			return PS_NORMAL;
		default:
			MCperror->add
			(PE_STATEMENT_NOTSEP, sp);
			return PS_ERROR;
		}
		if (type != ST_SEP)
		{
			MCperror->add
			(PE_STATEMENT_BADSEP, sp);
			return PS_ERROR;
		}
		needparam = True;
	}
	return PS_NORMAL;
}
Example #14
0
Parse_stat MCRepeat::parse(MCScriptPoint &sp)
{
	Parse_stat stat;
	Symbol_type type;
	const LT *te;

	initpoint(sp);
	if ((stat = sp.next(type)) != PS_NORMAL)
	{
		if (stat == PS_EOL)
		{
			if (sp.skip_eol() != PS_NORMAL)
			{
				MCperror->add
				(PE_REPEAT_BADCONDEOL, sp);
				return PS_ERROR;
			}
		}
		else
		{
			MCperror->add
			(PE_REPEAT_BADCONDTYPE, sp);
			return PS_ERROR;
		}
	}
	else
		switch (stat)
		{
		case PS_NORMAL:
			if (sp.lookup(SP_REPEAT, te) != PS_NORMAL)
			{
				sp.backup();
				form = RF_FOR;
				if (sp.parseexp(False, True, &endcond) != PS_NORMAL)
				{
					MCperror->add
					(PE_REPEAT_BADCOND, sp);
					return PS_ERROR;
				}
			}
			else
			{
				MCExpression *newfact = NULL;
				switch (form = (Repeat_form)te->which)
				{
				case RF_FOREVER:
					break;
				case RF_FOR:
					if (sp.skip_token(SP_REPEAT, TT_UNDEFINED, RF_EACH) == PS_NORMAL)
					{
						if (sp.next(type) != PS_NORMAL
						        || sp.lookup(SP_UNIT, te) != PS_NORMAL
						        || sp.next(type) != PS_NORMAL)
						{
							MCperror->add(PE_REPEAT_BADCOND, sp);
							return PS_ERROR;
						}
						each = (File_unit)te->which;
						if (sp.lookupconstant(&newfact) == PS_NORMAL
						        || sp . findnewvar(sp.gettoken_nameref(), kMCEmptyName, &loopvar) != PS_NORMAL)
						{
							delete newfact;
							MCperror->add(PE_REPEAT_BADWITHVAR, sp);
							return PS_ERROR;
						}
						if (sp.skip_token(SP_FACTOR, TT_IN) != PS_NORMAL)
						{
							MCperror->add(PE_REPEAT_NOOF, sp);
							return PS_ERROR;
						}
					}
				case RF_UNTIL:
				case RF_WHILE:
					if (sp.parseexp(False, True, &endcond) != PS_NORMAL)
					{
						MCperror->add
						(PE_REPEAT_BADCOND, sp);
						return PS_ERROR;
					}
					break;
				case RF_WITH:
					if ((stat = sp.next(type)) != PS_NORMAL)
					{
						MCperror->add
						(PE_REPEAT_NOWITHVAR, sp);
						return PS_ERROR;
					}
					if (sp.lookupconstant(&newfact) == PS_NORMAL
					        || sp.findnewvar(sp.gettoken_nameref(), kMCEmptyName, &loopvar) != PS_NORMAL)
					{
						delete newfact;
						MCperror->add
						(PE_REPEAT_BADWITHVAR, sp);
						return PS_ERROR;
					}
					if ((stat = sp.next(type)) != PS_NORMAL)
					{
						MCperror->add
						(PE_REPEAT_NOEQUALS, sp);
						return PS_ERROR;
					}
					if (sp.lookup(SP_FACTOR, te) != PS_NORMAL
					        || te->type != TT_BINOP || te->which != O_EQ)
					{
						MCperror->add
						(PE_REPEAT_NOTEQUALS, sp);
						return PS_ERROR;
					}
					if (sp.parseexp(False, True, &startcond) != PS_NORMAL)
					{
						MCperror->add
						(PE_REPEAT_BADWITHSTARTEXP, sp);
						return PS_ERROR;
					}
					if ((stat = sp.next(type)) != PS_NORMAL)
					{
						MCperror->add
						(PE_REPEAT_NOWITHTO, sp);
						return PS_ERROR;
					}
					if (sp.lookup(SP_FACTOR, te) != PS_NORMAL)
					{
						if (sp.gettoken() != "down")
						{
							MCperror->add
							(PE_REPEAT_NOWITHTO, sp);
							return PS_ERROR;
						}
						stepval = -1.0;
						if (sp.skip_token(SP_FACTOR, TT_TO) != PS_NORMAL)
						{
							MCperror->add
							(PE_REPEAT_NODOWNTO, sp);
							return PS_ERROR;
						}
					}
					else
						if (te->type != TT_TO)
						{
							MCperror->add
							(PE_REPEAT_NOTWITHTO, sp);
							return PS_ERROR;
						}
						else
							stepval = 1.0;
					if (sp.parseexp(False, True, &endcond) != PS_NORMAL)
					{
						MCperror->add
						(PE_REPEAT_BADWITHENDEXP, sp);
						return PS_ERROR;
					}
					if (sp.skip_token(SP_REPEAT, TT_UNDEFINED, RF_STEP) == PS_NORMAL)
						if (sp.parseexp(False, True, &step) != PS_NORMAL)
						{
							MCperror->add
							(PE_REPEAT_BADWITHSTARTEXP, sp);
							return PS_ERROR;
						}
					break;
				default: /* repeat form */
					fprintf(stderr, "Repeat: ERROR bad control form\n");
					return PS_ERROR;
				}
			}
			if (sp.skip_eol() != PS_NORMAL)
			{
				MCperror->add
				(PE_REPEAT_BADFORMEOL, sp);
				return PS_ERROR;
			}
			break;
		case PS_EOL:
			break;
		default: /* token type */
			MCperror->add
			(PE_REPEAT_BADFORMTYPE, sp);
			return PS_ERROR;
		}

	MCStatement *curstatement = NULL;
	MCStatement *newstatement = NULL;
	while (True)
	{
		switch (sp.next(type))
		{
		case PS_NORMAL:
			if (type == ST_DATA)
				newstatement = new MCEcho;
			else if (sp.lookup(SP_COMMAND, te) != PS_NORMAL)
			{
				if (type == ST_ID)
					newstatement = new MCComref(sp.gettoken_nameref());
				else
				{
					MCperror->add
					(PE_REPEAT_NOTCOMMAND, sp);
					return PS_ERROR;
				}
			}
			else
			{
				switch (te->type)
				{
				case TT_STATEMENT:
					newstatement = MCN_new_statement(te->which);
					break;
				case TT_END:
					if (sp.skip_token(SP_COMMAND, TT_STATEMENT, S_REPEAT) != PS_NORMAL)
					{
						MCperror->add
						(PE_REPEAT_WANTEDENDREPEAT, sp);
						return PS_ERROR;
					}
					return PS_NORMAL;
				default:
					MCperror->add
					(PE_REPEAT_BADSTATEMENT, sp);
					return PS_ERROR;
				}
			}
			break;
		case PS_EOL:
			if (sp.skip_eol() != PS_NORMAL)
			{
				MCperror->add
				(PE_REPEAT_WANTEDENDREPEAT, sp);
				return PS_ERROR;
			}
			continue;
		default:
			MCperror->add
			(PE_REPEAT_BADTOKEN, sp);
			return PS_ERROR;
		}
		if (newstatement->parse(sp) != PS_NORMAL)
		{
			MCperror->add
			(PE_REPEAT_BADCOMMAND, sp);
			delete newstatement;
			return PS_ERROR;
		}
		if (statements == NULL)
			statements = curstatement = newstatement;
		else
		{
			curstatement->setnext(newstatement);
			curstatement = newstatement;
		}
	}
	return PS_NORMAL;
}
Example #15
0
Parse_stat MCIf::parse(MCScriptPoint &sp)
{
	initpoint(sp);
	if (sp.parseexp(False, True, &cond) != PS_NORMAL)
	{
		MCperror->add
		(PE_IF_BADCONDITION, sp);
		return PS_ERROR;
	}

	Symbol_type type;
	const LT *te;
	MCStatement *curstatement = NULL;
	MCStatement *newstatement = NULL;
	If_state state = IS_UNDEFINED;
	If_format format = IF_UNDEFINED;
	Boolean needstatement = False;

	while (True)
	{
		switch (sp.next(type))
		{
		case PS_NORMAL:
			if (type == ST_DATA || sp.lookup(SP_COMMAND, te) != PS_NORMAL)
			{
				if (needstatement)
				{
					if (type == ST_ID)
						newstatement = new MCComref(sp.gettoken_nameref());
					else if (type == ST_DATA)
						newstatement = new MCEcho;
					else
					{
						MCperror->add(PE_IF_NOTCOMMAND, sp);
						return PS_ERROR;
					}
				}
				else
				{
					if (state == IS_UNDEFINED)
					{
						MCperror->add(PE_IF_NOTHEN, sp);
						return PS_ERROR;
					}
					sp.backup();
					return PS_NORMAL;
				}
			}
			else
			{
				switch (te->type)
				{
				case TT_STATEMENT:
					if (needstatement)
						newstatement = MCN_new_statement(te->which);
					else
					{
						if (state == IS_UNDEFINED)
						{
							MCperror->add(PE_IF_NOTHEN, sp);
							return PS_ERROR;
						}
						sp.backup();
						return PS_NORMAL;
					}
					break;
				case TT_THEN:
					state = IS_THEN;
					needstatement = True;
					continue;
				case TT_ELSE:
					state = IS_ELSE;
					needstatement = True;
					continue;
				case TT_END:
					if (needstatement)
					{
						if (sp.skip_token(SP_COMMAND, TT_STATEMENT, S_IF) != PS_NORMAL)
						{
							MCperror->add(PE_IF_WANTEDENDIF, sp);
							return PS_ERROR;
						}
					}
					else
						sp.backup();
					return PS_NORMAL;
				default: /* token type */
					if (needstatement)
					{
						MCperror->add(PE_IF_WANTEDENDIF, sp);
						return PS_ERROR;
					}
					sp.backup();
					return PS_NORMAL;
				}
			}
			break;
		case PS_EOL:
			switch (format)
			{
			case IF_UNDEFINED:
				if (state == IS_THEN)
					format = IF_MULTIPLE;
				else
					format = IF_SINGLE;
				break;
			case IF_ONELINE:
				if (state == IS_ELSE)
					return PS_NORMAL;
				format = IF_SINGLE;
				needstatement = False;
				break;
			case IF_SINGLE:
				if (state == IS_ELSE)
					format = IF_ELSEMULTIPLE;
				else
					format = IF_MULTIPLE;
				break;
			case IF_MULTIPLE:
				if (state == IS_ELSE)
					format = IF_ELSEMULTIPLE;
				break;
			case IF_ELSEMULTIPLE:
				break;
			}
			if (sp.skip_eol() != PS_NORMAL)
			{
				MCperror->add(PE_IF_BADEOL, sp);
				return PS_ERROR;
			}
			continue;
		case PS_EOF:
			return PS_NORMAL;
		default:
			MCperror->add(PE_IF_BADTYPE, sp);
			return PS_ERROR;
		}
		if (newstatement->parse(sp) != PS_NORMAL)
		{
			MCperror->add(PE_IF_BADSTATEMENT, sp);
			delete newstatement;
			return PS_ERROR;
		}
		switch (state)
		{
		case IS_THEN:
			if (thenstatements == NULL)
				thenstatements = curstatement = newstatement;
			else
			{
				curstatement->setnext(newstatement);
				curstatement = newstatement;
			}
			switch (format)
			{
			case IF_UNDEFINED:
				format = IF_ONELINE;
				needstatement = False;
				break;
			case IF_SINGLE:
				needstatement = False;
				break;
			case IF_MULTIPLE:
				break;
			default: // may be unreachable
				return PS_ERROR;
			}
			break;
		case IS_ELSE:
			if (elsestatements == NULL)
				elsestatements = curstatement = newstatement;
			else
			{
				curstatement->setnext(newstatement);
				curstatement = newstatement;
			}
			if (format != IF_ELSEMULTIPLE)
				return PS_NORMAL;
			break;
		case IS_UNDEFINED:
			MCperror->add(PE_IF_NOTHEN, sp);
			delete newstatement;
			return PS_ERROR;
		}
	}
	return PS_NORMAL;
}
Example #16
0
Parse_stat MCSwitch::parse(MCScriptPoint &sp)
{
	Symbol_type type;
	const LT *te;

	initpoint(sp);
	if (sp.next(type) == PS_NORMAL)
	{
		sp.backup();
		if (sp.parseexp(False, True, &cond) != PS_NORMAL)
		{
			MCperror->add
			(PE_SWITCH_BADCONDITION, sp);
			return PS_ERROR;
		}
	}
	else
		if (sp.skip_eol() != PS_NORMAL)
		{
			MCperror->add
			(PE_SWITCH_WANTEDENDSWITCH, sp);
			return PS_ERROR;
		}
	uint2 snum = 0;
	MCStatement *curstatement = NULL;
	MCStatement *newstatement = NULL;
	while (True)
	{
		switch (sp.next(type))
		{
		case PS_NORMAL:
			if (type == ST_DATA)
				newstatement = new MCEcho;
			else if (sp.lookup(SP_COMMAND, te) != PS_NORMAL)
			{
				if (type == ST_ID)
					newstatement = new MCComref(sp.gettoken_nameref());
				else
				{
					MCperror->add
					(PE_SWITCH_NOTCOMMAND, sp);
					return PS_ERROR;
				}
			}
			else
			{
				switch (te->type)
				{
				case TT_STATEMENT:
					newstatement = MCN_new_statement(te->which);
					break;
				case TT_CASE:
					MCU_realloc((char **)&cases, ncases, ncases + 1,
					            sizeof(MCExpression *));
					if (sp.parseexp(False, True, &cases[ncases]) != PS_NORMAL)
					{
						MCperror->add
						(PE_SWITCH_BADCASECONDITION, sp);
						return PS_ERROR;
					}
					MCU_realloc((char **)&caseoffsets, ncases, ncases + 1,
					            sizeof(uint2));
					caseoffsets[ncases++] = snum;
					continue;
				case TT_DEFAULT:
					defaultcase = snum;
					continue;
				case TT_END:
					if (sp.skip_token(SP_COMMAND, TT_STATEMENT, S_SWITCH) != PS_NORMAL)
					{
						MCperror->add
						(PE_SWITCH_WANTEDENDSWITCH, sp);
						return PS_ERROR;
					}
					return PS_NORMAL;
				default: /* token type */
					MCperror->add
					(PE_SWITCH_BADCASECONDITION, sp);
					return PS_ERROR;
				}
			}
			break;
		case PS_EOL:
			if (sp.skip_eol() != PS_NORMAL)
			{
				MCperror->add
				(PE_SWITCH_WANTEDENDSWITCH, sp);
				return PS_ERROR;
			}
			continue;
		case PS_EOF:
			return PS_NORMAL;
		default:
			MCperror->add
			(PE_SWITCH_BADTYPE, sp);
			return PS_ERROR;
		}
		if (newstatement->parse(sp) != PS_NORMAL)
		{
			MCperror->add
			(PE_SWITCH_BADSTATEMENT, sp);
			delete newstatement;
			return PS_ERROR;
		}
		if (statements == NULL)
			statements = curstatement = newstatement;
		else
		{
			curstatement->setnext(newstatement);
			curstatement = newstatement;
		}
		snum++;
	}
	return PS_NORMAL;
}