156 	inputsource *source;  in new_source()  local
159 	source = malloc(sizeof(*source));  in new_source()
160 	if (source == NULL)  in new_source()
162 	source->result = ISC_R_SUCCESS;  in new_source()
163 	source->is_file = is_file;  in new_source()
164 	source->need_close = need_close;  in new_source()
165 	source->at_eof = 0;  in new_source()
166 	source->last_was_eol = lex->last_was_eol;  in new_source()
167 	source->input = input;  in new_source()
168 	source->name = strdup(name);  in new_source()
169 	if (source->name == NULL) {  in new_source()
170 		free(source);  in new_source()
173 	source->pushback = NULL;  in new_source()
174 	result = isc_buffer_allocate(&source->pushback,  in new_source()
177 		free(source->name);  in new_source()
178 		free(source);  in new_source()
181 	source->ignored = 0;  in new_source()
182 	source->line = 1;  in new_source()
183 	ISC_LIST_INITANDPREPEND(lex->sources, source, link);  in new_source()
194 	 * Open 'filename' and make it the current input source for 'lex'.  in isc_lex_openfile()
208 	inputsource *source;  in isc_lex_close()  local
214 	source = HEAD(lex->sources);  in isc_lex_close()
215 	if (source == NULL)  in isc_lex_close()
218 	ISC_LIST_UNLINK(lex->sources, source, link);  in isc_lex_close()
219 	lex->last_was_eol = source->last_was_eol;  in isc_lex_close()
220 	if (source->is_file) {  in isc_lex_close()
221 		if (source->need_close)  in isc_lex_close()
222 			(void)fclose((FILE *)(source->input));  in isc_lex_close()
224 	free(source->name);  in isc_lex_close()
225 	isc_buffer_free(&source->pushback);  in isc_lex_close()
226 	free(source);  in isc_lex_close()
242 pushback(inputsource *source, int c) {  in pushback()  argument
243 	REQUIRE(source->pushback->current > 0);  in pushback()
245 		source->at_eof = 0;  in pushback()
248 	source->pushback->current--;  in pushback()
250 		source->line--;  in pushback()
254 pushandgrow(inputsource *source, int c) {  in pushandgrow()  argument
255 	if (isc_buffer_availablelength(source->pushback) == 0) {  in pushandgrow()
261 		oldlen = isc_buffer_length(source->pushback);  in pushandgrow()
265 		isc_buffer_usedregion(source->pushback, &used);  in pushandgrow()
268 		tbuf->current = source->pushback->current;  in pushandgrow()
269 		isc_buffer_free(&source->pushback);  in pushandgrow()
270 		source->pushback = tbuf;  in pushandgrow()
272 	isc_buffer_putuint8(source->pushback, (uint8_t)c);  in pushandgrow()
278 	inputsource *source;  in isc_lex_gettoken()  local
295 	source = HEAD(lex->sources);  in isc_lex_gettoken()
298 	if (source == NULL) {  in isc_lex_gettoken()
306 	if (source->result != ISC_R_SUCCESS)  in isc_lex_gettoken()
307 		return (source->result);  in isc_lex_gettoken()
310 	source->saved_line = source->line;  in isc_lex_gettoken()
312 	if (isc_buffer_remaininglength(source->pushback) == 0 &&  in isc_lex_gettoken()
313 	    source->at_eof)  in isc_lex_gettoken()
322 	isc_buffer_compact(source->pushback);  in isc_lex_gettoken()
330 	if (source->is_file)  in isc_lex_gettoken()
331 		flockfile(source->input);  in isc_lex_gettoken()
334 		if (isc_buffer_remaininglength(source->pushback) == 0) {  in isc_lex_gettoken()
335 			if (source->is_file) {  in isc_lex_gettoken()
336 				stream = source->input;  in isc_lex_gettoken()
341 						source->result = ISC_R_IOERROR;  in isc_lex_gettoken()
342 						result = source->result;  in isc_lex_gettoken()
345 					source->at_eof = 1;  in isc_lex_gettoken()
348 				buffer = source->input;  in isc_lex_gettoken()
352 					source->at_eof = 1;  in isc_lex_gettoken()
360 				source->result = pushandgrow(source, c);  in isc_lex_gettoken()
361 				if (source->result != ISC_R_SUCCESS) {  in isc_lex_gettoken()
362 					result = source->result;  in isc_lex_gettoken()
368 		if (!source->at_eof) {  in isc_lex_gettoken()
371 				source->ignored =  in isc_lex_gettoken()
372 				   isc_buffer_consumedlength(source->pushback);  in isc_lex_gettoken()
373 			c = isc_buffer_getuint8(source->pushback);  in isc_lex_gettoken()
379 			source->line++;  in isc_lex_gettoken()
442 				pushback(source, c);  in isc_lex_gettoken()
443 				if (source->result != ISC_R_SUCCESS) {  in isc_lex_gettoken()
444 					result = source->result;  in isc_lex_gettoken()
476 			pushback(source, c);  in isc_lex_gettoken()
541 					pushback(source, c);  in isc_lex_gettoken()
572 	if (source->is_file)  in isc_lex_gettoken()
573 		funlockfile(source->input);  in isc_lex_gettoken()
579 	inputsource *source;  in isc_lex_ungettoken()  local
584 	source = HEAD(lex->sources);  in isc_lex_ungettoken()
585 	REQUIRE(source != NULL);  in isc_lex_ungettoken()
587 	REQUIRE(isc_buffer_consumedlength(source->pushback) != 0 ||  in isc_lex_ungettoken()
592 	isc_buffer_first(source->pushback);  in isc_lex_ungettoken()
594 	source->line = source->saved_line;  in isc_lex_ungettoken()
595 	source->at_eof = 0;  in isc_lex_ungettoken()
601 	inputsource *source;  in isc_lex_getlasttokentext()  local
603 	source = HEAD(lex->sources);  in isc_lex_getlasttokentext()
604 	REQUIRE(source != NULL);  in isc_lex_getlasttokentext()
606 	REQUIRE(isc_buffer_consumedlength(source->pushback) != 0 ||  in isc_lex_getlasttokentext()
611 	INSIST(source->ignored <= isc_buffer_consumedlength(source->pushback));  in isc_lex_getlasttokentext()
612 	r->base = (unsigned char *)isc_buffer_base(source->pushback) +  in isc_lex_getlasttokentext()
613 		  source->ignored;  in isc_lex_getlasttokentext()
614 	r->length = isc_buffer_consumedlength(source->pushback) -  in isc_lex_getlasttokentext()
615 		    source->ignored;  in isc_lex_getlasttokentext()
620 	inputsource *source;  in isc_lex_getsourcename()  local
622 	source = HEAD(lex->sources);  in isc_lex_getsourcename()
624 	if (source == NULL)  in isc_lex_getsourcename()
627 	return (source->name);  in isc_lex_getsourcename()
632 	inputsource *source;  in isc_lex_getsourceline()  local
634 	source = HEAD(lex->sources);  in isc_lex_getsourceline()
636 	if (source == NULL)  in isc_lex_getsourceline()
639 	return (source->line);  in isc_lex_getsourceline()