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605. [func] New function isc_lex_getlasttokentext().

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This commit is contained in:
Andreas Gustafsson 2000-12-09 02:05:26 +00:00
parent 2732332fe5
commit 10e22ebcc3
3 changed files with 49 additions and 4 deletions
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3
CHANGES
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@ -1,3 +1,6 @@
605. [func] New function isc_lex_getlasttokentext().
604. [bug] The named.conf parser could print incorrect line
numbers when long comments were present.

17
lib/isc/include/isc/lex.h
View file

@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: lex.h,v 1.23 2000/11/08 01:55:30 bwelling Exp $ */
/* $Id: lex.h,v 1.24 2000/12/09 02:05:26 gson Exp $ */
#ifndef ISC_LEX_H
#define ISC_LEX_H 1
@ -335,6 +335,21 @@ isc_lex_ungettoken(isc_lex_t *lex, isc_token_t *tokenp);
* There is no ungotten token already.
*/
void
isc_lex_getlasttokentext(isc_lex_t *lex, isc_token_t *tokenp, isc_region_t *r);
/*
* Returns a region containing the text of the last token returned.
*
* Requires:
* 'lex' is a valid lexer.
*
* 'lex' has an input source.
*
* 'tokenp' points to a valid token.
*
* A token has been gotten and not ungotten.
*/
char *
isc_lex_getsourcename(isc_lex_t *lex);
/*

33
lib/isc/lex.c
View file

@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: lex.c,v 1.55 2000/12/09 00:41:33 bwelling Exp $ */
/* $Id: lex.c,v 1.56 2000/12/09 02:05:25 gson Exp $ */
#include <config.h>
@ -38,6 +38,7 @@ typedef struct inputsource {
isc_boolean_t need_close;
isc_boolean_t at_eof;
isc_buffer_t * pushback;
unsigned int ignored;
void * input;
char * name;
unsigned long line;
@ -213,6 +214,7 @@ new_source(isc_lex_t *lex, isc_boolean_t is_file, isc_boolean_t need_close,
isc_mem_put(lex->mctx, source, sizeof *source);
return (result);
}
source->ignored = 0;
source->line = 1;
ISC_LIST_INITANDPREPEND(lex->sources, source, link);
@ -452,10 +454,15 @@ isc_lex_gettoken(isc_lex_t *lex, unsigned int options, isc_token_t *tokenp) {
}
}
if (!source->at_eof)
if (!source->at_eof) {
if (state == lexstate_start)
/* Token has not started yet. */
source->ignored =
isc_buffer_consumedlength(source->pushback);
c = isc_buffer_getuint8(source->pushback);
else
} else {
c = EOF;
}
if (c == '\n')
source->line++;
@ -795,6 +802,26 @@ isc_lex_ungettoken(isc_lex_t *lex, isc_token_t *tokenp) {
source->at_eof = ISC_FALSE;
}
void
isc_lex_getlasttokentext(isc_lex_t *lex, isc_token_t *tokenp, isc_region_t *r)
{
inputsource *source;
REQUIRE(VALID_LEX(lex));
source = HEAD(lex->sources);
REQUIRE(source != NULL);
REQUIRE(tokenp != NULL);
REQUIRE(isc_buffer_consumedlength(source->pushback) != 0 ||
tokenp->type == isc_tokentype_eof);
UNUSED(tokenp);
INSIST(source->ignored <= isc_buffer_consumedlength(source->pushback));
r->base = isc_buffer_base(source->pushback) + source->ignored;
r->length = isc_buffer_consumedlength(source->pushback) - source->ignored;
}
char *
isc_lex_getsourcename(isc_lex_t *lex) {
inputsource *source;